The Appalachian spring helve hammer, including springs, hammer head/tup and more. See what it takes to construct this shop staple.

18V - 18 gauge - 2.4 kg

ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).

Olivier Le Clerc est un jeune forgeron créateur de sculptures, meubles et luminaires

Description (No Model.) 2 sheets-sheet 1. PA.BBAUDRY. POWER HAMMER. No. 264,816. Patented Sept. 19., 1882. . vgea: anden Bm zalig. may. (No Model.) 2 Sheets-Sheet 2. .t A.BBAUDRY. I :POWER HAMMER. No. 264,816. Patented Sept. 19, 1882. ' l UNITED STATES PATENT OEEICE., ALEXANDER BEAUDRY, OF BOSTON, ASSIGNOR TO AUGUSTINE BEAUDRY, OF` EAST BOSTON, MASSACHUSETTS. POWER-HAMMER. SPECIFICATION forming `part of Letters Patent No. 264,816, dated September 19, 1882. Application tiled October 15, 1881. (No model.) ' To all uliom it may concern: Be it known that I, ALEXANDER BEAUDRY, a citizen ofthe United States, residing at Bos tou, in the county ot' Suffolk and State of Massach usetts. have invented certain new and useful Improvements in Power-Hammers-; and I do hereby declare the following to be a full, clear, and exactdescription ot' the invention, such as will enable others skilled in the art to 1o which it appertains to make and use the same, reference being had to the accompanying drav`vings, and to letters or igures of reference marked thereon, which form a part of this specitication. These improvements are basedupon `a class ot power-hammers in which the hammer-head is guided by vertical ways and moves in vertical reciprocations by the action of a rigid horizontal beam pivoted to it by a suitable conzo necting-rod, the rear end ot' such beam being pivoted to the rear of the machineframe and operated by a crank-shaft connected with it by a rod situated between the hammer-head and the pivot ot' the beam. i This invention consists mainly in combining two pairs of springs with a power-hammer, its beam, and a pitmau or connecting-rod, one pair of springs serving to lessen the shock of the hammer and to make its blow more forci-u 3o blc and elastic, .and the other pair ot' springs serving to give additional impulse to the hammer at the end of the downward stroke and to accelerate the beginning of the upward stroke, as set forth. In the accompanying drawings, Figure 1 represents a vertical section from front to rear through a machine embodying my invention Fig. 2, a front elevation of the same, and Fig. 3 a detail view of a modified form ot' beam with 4o attached parts. Reference .being had to 'the above-named drawings,it will be seen thatArepresents the frame ofthe machine,`the same being composed of a bed-plate or base, B, and upright side standards or housings, G C, the latter being united. at their upper ends to form a head, D,the opposite sides ot' which constitute ways or guides a u to guide the motions of the hammer-head. E represents they hammer-head as playing 5o vertically within the guides a a. F represents the anvil; G, therodconnei ting the hammer-head with the front end of the horizontal driviug-beain, which is shown at H, such beam being disposed at the extreme upper part ot' the machine-frame and pivoted at its rear end to the rear part of such frame by a pivot, b. y The crank-driving shaft is shown at I as mounted horizontally in suitable bearings in 6o the rear part of the machine-frame, such shaft being putin motion by a pulley, c, secured to one end ot said shaft, about which and adriving-pnlley an endless band, d, travels. J represents a friction-pulley, mounted within the upper end ot' a vibratory bar, K, which is secured at its lower end rigidly to a horizontal rock-shaft, L, journaled at the lower rear part ot the machine-frame, while A represents a yoke-shaped treadle passing about 7o the anvil and secured rigidly at its rear part to the said shaft L. The operatorbears down with one foot upon the treadle, thus tightening the belt d against the pulley cand putting the latter and the crankshaft Iin rotation and the hammer in motion, the strength ot' theblow exerted by the latter beingr governed by the extent to which the belt is tightened. 'N represents the rod connecting the crank c ot' the'shaft I with the beam H. 8o The abovecoustitute the elem en tary features of power-hammers now generally in use combined with my improvements. In carrying out my improvements I proceed as follows: lhe body ot' the connectingvrod N 85 is a straight tube,f, connected at its lower end to the box g, Which-surrounds the crank, by a screw-connection, h, in order that the height of the hammer-head with respect to the anvil may be varied or adjusted. The upper cou- 9o nection ot' the rod N with the beam is a rod, t', the upper end of which is swiveled to the beam,vwhile its lower end carries a piston or plunge-nj, which closely tits the bore of the `tube f, and is situated about centrally ot' such 9.5 tube. A tubular screw-cap, la, covers the mouth of the tube f, and, while permitting the pasmsage of the rod t', serves as a resistance to a coiled spring or other elastic material, Z, which is contained within the upper part of said tube, and exerts its stress between the cap 7c and the plunger j of the rod t. A second coiled spring or other elastic materi-al, m, is pl-aced in the lower part ofthe tubef, and exerts its stress between the bottom of said tube and the plungerj. at its upper part, as shown at n, to receive a piston or plunger, 0, secured to the lower end of the rod G, such piston being disposed about midway of said chamber u, and the mouth of the latter being closed by a tubular screw-cap, p, through the bore ot' which said rod G passes, ,this screw-cap serving as an abutment to a coiled spring or other elastic material, q, which is disposed within the upper part ot' the chamber n, and exerts its functions between said cap and the piston o. A second coiled spring or other elastic material, t", is disposed within the lower part of the chamber n, and exerts its effort between the bottom of said chamber and the piston o. As the crank cascends and passes its highest point the hammer-head continues to risc by its momentum until arrested by the contraction of the spring l, which spring` stores the power thus exerted during the descent ot' the hammer until the crank @passes its lowest point, when, by its sudden reaction, it accelerates the drop of the hammer beyond the speed ot' the crank, and thus greatly increases the force of the blow delivered. The functions ot' the spring m are, rst, to sustain the weight of the hammer, and, second, as the hammer nears the end of its descent to yield, while the hammer continues to descend after the crank c has reached its lowest point, and by its sudden reaction to lift the hammer instantly and faster for that instant than could be effected by the crank, thus imparting a wonderful elasticity to the blow, on account ot which the heat is much longer retained in the metal being worked, and much ofthe danger of disintegration from abrasion is avoided,'while both springs Z and 'm serve in a measure to relieve the parts from shocks and strains incident to` the working ot' the machine. lrIhe springs q and r operate in manner similar to the springs lm, and in a measure aid to impart a more powerful and elastic blow by the hammer, but serve chietiy to relieve the adjacent parts of the frame and driving mechanism from the shocks and strains incident to the working ot' the machine. The hammer-head E is chambered l A brake is to be added to the shaft L, and so arrangedwith respect to the pulley c and treadle A that when such treadle is lowered by the foot of the workman in the actot starting the hammer the brake is removed from contact with a balance-wheel carried by the shaft I, and as the workman removes his foot from the treadle the brake, b vits own weight, drops into contact with the ity-wheel and instantly arrests themotions of the hammer. In lieu of the piston or head secured to the lower ends ot' the rods G and t' as abutments for the springs l m q r, one or more pins may be passedhorizontally through each rod to bear upon the springs. I prefer a circular head or piston, as it constitutes an effective guide to the lower end ot' the rod and as a tirm and ample bearing for the springs. In some styles of hammers I propose to employ, in lieu ot' the rigid beam H, a curved elastic one ot' the form shown in Fig. 3 ofthe accom panying drawings. This spring is shown at S as U-shaped, with its lower arm, V, secured to the extreme rear part of the housings C, and with its upper and longer arm, W, extending forward over the hammer-frame, and connected at its front end with the upper end of the rod G, before named. This spring or elastic arm S aids in imparting an elastic blow to the hammer. I claim- 1. In combination with pivoted beam H, hammer E, rod G, anda pitman constructed in two parts, the springs q and i and the springs l and m, said springs operating respectively on the hammer and on the pitnian, substantially as set forth. 2. In combination with beam H, hammer E, recessed as shown, rod G, working in said recess, and pitman N, consisting of an upper solid part and alower hollow part, the springs q and r, arranged respectively above and below the piston of rod G, the cap p, which contines them in place, the springs l and m, similarly arranged with respect to the piston of pitman N, cap k, which confines the latter springs in place, and the driving-wheel, wrist-pin, and guides, all substantially as set forth. In testimony whereof I affix my signature in presence of two witnesses. ALEXANDER BEAUDRY. Witnesses: l H. E. LODGE, F. CURTIS. IOO

Description March 4-, 1924.- J. I. DEPEW .POWER HAMMER Filed Oct. 5, 1922 2 Sheets-Sheet 1 ll I 311mm March 4, 1924.- l 1 ,485,486 J. l. DEPEW 4 POWER HAMMER Filed Oct. 5. 1922 2 Sheets-Sheet 5 Patented Mar. 4, 1924. UTED STATES JAMES I. DEPEW, OF LOU]?v CITY, NEBRASKA. - rowan- HAMMER. Application filed October 3, 1922. Serial No. 592,069. 7 Z '0 all whom it may concern: Be it known that I, James I. DEPEW, a citizen of the United States, residing at Loup City, in the county of Sherman and State of Nebraska, have invented a new and useful Power Hammer, of which the following is a specification. This invention relates to power hammers or the like, and aims to improve the construction as set forth in my Patent No. 1,076,554, granted October 21, 1913. The primary object of the invention is to provide novel means for securing the dies in their supports, the securing means being such as to prevent lateral movement of the dies with respect to their supports. Another object of the invention is to provide a machine wherein the movements of the movable die supporting arm may be cushioned, to relieve the power hammer of undue strain. With the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details-of construct-ion hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed, may be made within the scope of What is claimed, without departing from the spirit of the invention. Referring to the drawings Figure 1 is a side elevational view of a power hammer constructed in accordance with the invention. Spaced ears 13 form apart of the lower section 9, which ears are connected by means of the bolt 15 providing a pivot for the arm 14. The arm leis provided with a cut out portion 16 disposed adjacent to the outer end thereof'and arranged on the under side of the arm, providing'asupport for the removable die 17. Extending laterally from the arm 14, are the lugs 18, which lugs are formed with cut out portions to accommodate the securing bolt 19, which is in the form of a U bolt, the ends thereof being threaded to accommodate the nuts 20. As shown these lugs 18 are disposed in planes directly above the cut out portion 16, so that when the bolt is positioned, the side arms thereof will overlie the ends of the die 17, as shown by Figure 1. In order that the die will be held against movement, one wall of the cut out portion 16 is formed at an angle as at 21, so that When the securing bolt 19 is properly positioned, a wedging action is set up between the die and wall of the cut out portion in. which the die is positioned. Located at the rear of the table 5, are bearings 22 in which the shaft 23 moves, a pulley 24 being secured to one end of the shaft by means of which power may be applied to the hammer, through a belt and power device, not shown. This shaft 22 is provided with a central off set portion on which the bearing 25 is mounted, connecting rods 26 having connection with the bearing 25 at the lower ends thereof while the upper ends have connection with the spring connecting member 27 that has its upper ends connected with the cross arms 28, as through the rods 29. Thus it will be seen that as the shaft 23 rotates, vertical movement will be imparted to the arm 1 1, to the end that the dies supported at the opposite end of the device, will be brought into cooperative relation with each other. While I have described the means for securing the upper or movable die within the out out portion of the arm 14, it is to be understood that I employ the same structure for securing the lower die, which is mechanism'being such as may be controlled by movements of the footlever 81. Having thus described the invention, whatis claimed as new is: 5 In a power hammer, a die support having a cut out portion formed with a relatively perpendicular Wall and an inclined wall, laterally extending ears disposed on said support, said out out portion adapted to receive adie, a securing bolt positioned between one surface of the die and 'saidinclin'ed wall of'the cutout portion, and said securing bolt extending'through the ears for securing the die within the out out portion. In testimony that I claim the foregoing as my own, I have hereto afiixed my signature in the presence of two witnesses. JAMES I. DEPEW. Witnesses: , D. A. BEACH, Jos. F. HAREMZA.

Description No. 716,019. Patented nec. le, |902. . H. FELnHus. POWER HAMMER. . (Application tiled May 3, 1902.) (No Model.) I 2 sheets-sheet W/ TNESSES.' /NVENTO/- l F444 "Fw-2 ewmjzdw l BY ` ArroH/v No..7|6,0|9. Patentad Dec. I6, |902. H. FELnHus. POWER HAMMER. (Application led May 3, 1902.) (nu Model.) I 2 sheets-sheet 2. W d2 e W/ TNE SSE S.' 'me News varias co maremma.. wasumnmu. n. u A TTOHNEYS.. HEINRICH FELDHUS, OF HALLAM, NEBRASKA. POWER-HAMMER. SPECIFICATION forming part ofl Letters .Patent No. 716,019, dated December 16, 1902. Application led May 3,1902. Serial No. 105,783. (No model.) To all whom, iv' may concern.- Be it known that I, HEINRICH FELDHUs, a citizen of the United States, and a resident of Hallam, in the county of Lancaster and State of Nebraska, have invented a new and Improved Power-Hammer, ot' which the following is a full, clear, and exact description. The object of the invention is to provide a new and improved power-hammer which is simple and durable in construction, very effectivein operation, more especially designed fork light worksuch as hammering plowshares, plow-points, and other articles-and arranged to enable the operator to control the hammer for the latter to strike quick sharp blows or slow light blows, according to the nature of the work under treatment. The invention consists of novel features and parts and combinations of the same, as will be more fully described hereinafter and then pointed out in the claims. A practical embodiment of the invention is represented in the 4accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views. Figure lis a front elevation of the improvement. Fig. 2 is aside elevation of the same. Fig. 3 is an enlarged front elevation of part of the frame. Fig. 4 is a transverse section of the same. Fig. 5 is a sectional plan view of the same on the line 5 5 of Fig. 3. Fig. 6 is a perspective view of part of one of the base I-beams. Fig. 7 is a similar view of a portion of one of the upright I-beams, and Fig. 8 is a sectional plan view of the improvement on the line 8 8 of Fig. 2. The frame of the power-hammer is set on a suitable foundation A and consists, essentially, of a plurality of base I-beams B, B', and B2, spaced apart and receiving between them, at the rear ends, the two upright I- beams C C', as plainly indicated in the drawings, the base and upright I-beams being fastened together by transversely extending bolts D, and a bolt D' also connects the front ends of the base I-beams B B B2 with each other. A bolt E connects the upper ends of the upright I-beams C C with each other. (See Fig. 2.) The top and bottom iianges of the middle base I-beam B' are formed with notches B3, (see Fig. 6,) and similar notches are formed in the top and bottom inner Iianges of the outer base I-beams B B2 and the said notches are adapted to be engaged by corresponding notches C2, formed in the flanges of the'upright I-beams C C', so as to interlock the base and upright I-beams with each other. By this arrangement the beams forming the frame are prevented from shifting out of position relative one to the other, and thus produce a very strong durable frame. On the front top portion of the base I-beams B B/ B2 rests the base F of an anvil-block F, carrying a suitable anvil F2, and the front end of the base F of the anvil-block is engaged by a transverse bar G, connected by bolts G with the foundation A, so as to securely hold the anvil-block F in position on the basebeams and to assist in holding the frame in position on the foundation. The rear end of the base F is engaged by bolts G2, (see Figs. l and 2,) extending downwardly between the base I-beams B B' and B' B2 to engage clamping-plates G2, abutting against the under side of the opposite flanges of the said base I- beams, as will be readily understood by reference to Fig. l. The rear ends of the base I-beams B, B', and B2 are engaged on top by a transverse bar G4 and connected by bolts G5 with the foundation A to securely hold the rear portion of the frame in position on the said foundation. Clamping-plates E and E2 engage the front and rear faces of the upright I-beams C C', as illustrated in Fig. 2, and the said clamping-plates are engaged by a bolt E3 to hold the plates in position and to assist in binding the upright beams in place. A hammer H reeiprocates over the anvil F2 and is dovetailed in a dovetail formed in the under side of the cross-head H and is secured in place therein by al set-screw H2, as indicated in Figs. l and 2. The cross-head H is mounted to slide vertically in guideplates H2, (see Figs. l, 2, and 8,) fastened by bolts I to channel-irons I', bolted or otherwise fastened to the front Iianges of the upright I-beams C C. The bolts I extend through elongated slot-s in the guide-plates H3, and the said bolts also engage angle-irons I2 to fasten the latter to the front flanges of the channelirons I', and the said angle-irons I2 are provided with bolts I3, engaging the outer edges of the guide-plates H3 to adj ust the latter to ICO ward each other to take up all wear between the cross-head II' and its guide-plates H3. The channel-irons I are connected with each other by stay-bolts I4 (see Figs. 2 and 8) to strengthen the channel-irons. The sides of the cross-head H are provided with lugs H4, on which are fulcrumed links J, extending outwardly and pivotally connected at their outer ends with the free ends of a leaf-spring K, connected at its middle portion with one end of a pitman L, engaging at its other end the wrist-pin N of a crankdisk N,`secured on the forward end of the main shaft O, journaled in suitable bearings P P', bolted to the upper ends of the upright I-beams C C at the front and rear faces thereof, so as to strengthen the frame of the powerhammer. On the shaft O is mounted loosely a driven pulley Q, adapted to be engaged by a friction-clutch R of any approved construction aud mounted to slide on and secured to the main shaft O, so that when the frictionclutch R engages the clutch member on the pulley Q then the shaft O is rotated to cause the latter to impart a reciprocating motion to the cross-head II and the hammer H by the action of the crank-disk N, pitman L, leafsprng K, and links J, fulcrumed on the said cross-head. The shifting lever R for the friction-clutch R is connected by a link: S with a bell-crank lever S, fulcrumed on the upright beams C C', and pivotally connected by links S2 with the treadle S3, fulcrumed on links S4, pivoted to the upright beams C C', as plainly indicated in the drawings, the said treadle S3 extending to the front of the foundation A, so as to be within convenient reach of the operators foot. Now when the operator presses the treadle S3 then the abovedescribed connection with the shifting lever R' imparts movement to the latter to move the friction-clutch R in frictional engagement with the driven pulley Q to cause rotation of the shaft O for the purpose previously stated. Now by the operator pressing the treadle S3 with more or less force the friction-clutch R is thrown in more or less frictional contact with the driven pulley Q to cause a more or less positive driving of the shaft O to regulate the force of the blow of the hammer H on the article under treatmeut and held on the anvil F2. The wrist-pin N', previously mentioned, is preferably readily adjustable on the crankdisk N, so as to permit of varying the throw of the crank N and the stroke of the crosshead II and hammer H to adapt the hammer for larger or smaller work. The entire machine is very simple and durable in construction, not liable to easily get out of order, and enables the operator to control the hammer for the latter to strike quick sharp blows or slow light blows, according to the nature of the work under treatment. Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. A power-hammer having a frame, comprising anged and spaced horizontal basebeams, flanged and spaced upright beams between the base-beams, the flanges of the beams being formed with interlocking notches, and bolts engaging the sets of beams, to fasten the same in position, as set forth. 2. A power-hammer having a frame, comprising a plurality of horizontal spaced I- beams for forming the base of the frame, the I-beams having notches in opposite top and bottom fianges, spaced upright I-beams extending between adjacent base I-beams and having notches to engage the notches in the base-beams, and bolts for fastening the base and upright beams together, as set forth. 3. A power-hammer having a pair of spaced upright I-beams, channel-irons secured to the front anges of the upright I- beams, cross-head guide-plates on the said channel-irons, angle-irons on the said channel-irons, bolts for securing the guide-plates and angle-irons to the channel-irons, and setscrews iu the said angle-irons, to engage and adjust the said guide-plates, as set forth. 4. In a power-hammer, the combination with a supporting-frame provided with forwardly-projecting lugs, of cross-head guideplates provided with slots, bolts passing through the frame and slots of the guideplates, and bolts carried by the lugs of the frame and engaging the outer edges of the guide-plates, for adjusting the same, as set forth. In testimony whereof I have signed my namel to this specification in the presence of two subscribing witnesses. HEINRICH FELDHUS. Vitnesses: HERMAN KERsENBRooK, JOHN RIPPEN.

Description No. 6313,04I. Patent'ed Aug. I, |899. W. FUGLESDNG. POWER HAMMER. (Application led Hay 19, 1B99.\ 2 sheets-sheet l. No Windel.) WWF, Z j Patented Aug. I, |899.- may 19, wee 2 Sheets Sheet 2. w.. FueLEsoNe. PWER HAMMER. (Application led No. 63U ,D4|. (No Model.) 'En wif" INIIIII- a G E @e .WM/, UNITED STATES PATENT OEEICE.v TASHINGTON FOGLESONG, OF DAYTON, OHIO. POWER-HAMM ER. SPECIFICATION forming part of Letters Patent No. 630,041, dated August 1, 1899. Application filed May l 9, 1 S9 9. To @U 10700112, it 11m/y coll/cern: Be it known that I, IASHINGTON FOGLE- SONG, a citizen of the United States, residing at Dayton, in the county of Montgomery and State of Ohio, have invented certain new and useful Improvements in Power- Hammers; and I do hereby declare the following to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains to make and use the same. My invention consists in the novel features hereinafter described, reference being had to the accompanying drawings, which illustrate one form in which I have contemplated embodying my invention, and said invention is fully disclosed in the following description and claims. Referring to the said drawings, Figure 1 represents a perspective view of a power-hammer embodying my invention. Fig. 2 is an enlarged View of the upper portion of the same, partly in section. Fig. 3 is a transverse vertical sectional view taken on a line through the crank-shaft. Fig. e is a detail of part of the mechanism. In the drawings, A represents the main frame or base of the hammer, provided at its forward end with the anvil B. t C represents the column, bolted to the base A, extending vertically therefrom and provided with the perforated ears c c. D represents the oscillating head, which is provided with a horizontal pivot-shaft d, engaging pivotally the ears c c of the column. This head is provided on its forward side with the upper and lower horizontal jaws (1622. The lower jaw is provided with a pair of recesses d'3, in each of whichis located an adjustable block di, having a circular stud or projection d5 on its upper face. A set-screw d6 extends through the bottom of each recess d3, engages the block d4, and is provided With a jam-nut d?, so that the blocks d4 d4 can be adjusted vertically by means of said screws d d6. E represents the helve of the hammer, pivyoted on the shaft CZ, within and independently of the oscillating head D, said helve carrying on its outer end the hammer F in position to strike a blow upon the anvil B. The helve E is provided with a thickened `Serial No. 717,494. (No model.) portion c, in line with the jaws d' d2, provided on its upper and lower sides with circular studs e e e2 e2, in line with the studs d5 ci, heretofore referred to. F F represent a pair of heavy coiled springs which have their lower ends in engagement with the studs d5 d5 of the lower jaw and their upper ends in engagement with the studs c c on the lower side of the helve. The upper jaw d of the oscillating head D is provided with a pair of vertical apertures d8, extending entirely through the jaw and closed at their upper ends by flanged plates dg, extending into said apertures and having their iianges secured to the jaw by screws (or bolts) d10 d10. Each of the apertures d8 is pro vided with a block du below the plate d9,which block has a circular stud d on its lower side. A set-screw (Z13 extends centrally through each of the plates d9 to engage and adjust the block d and is provided with a jam-A nut C114. F F are springs similar to springs F F, the lower ends of which engage the studs e2 e2 on the helve, while their upper ends engage the studs CP2 d12 on the blocks du du. The springs F F are placed in operative position, first, in assembling the parts of the hammer, after which the plates d di are removed and the springs F F' are inserted through the apertures ds ds. The blocks d d are then placed on the upper ends of the springs and the plates C29 (Z9 are screwed into position and the proper tension of the springs is obtained by screwing up the screws d Z13 and d6 d6. After all the springs are in position it is obvious that by means of the adj usting screws and adjustable blocks described and shown the tension of the springs can be readily and quickly adjusted, thereby varying the blow of the hammer as required for different classes of work. The oscillating head D is provided at its rear side with an arm D, which is connected by a pitman G with a crank-shaft H, mounted in bearings in the base A, the upper end of the pitman being adjustable longitudinally of the arm D' in a well-known way to vary the stroke of the hammer. The crankshaft is in this instance provided with a c0ne pulley h, mounted on a spline or feather and adapted to be brought into frictional contact ICO with a cone-shaped recess in a band-pulley I, loosely mounted on the shaft H. The conepulley h is thrown into gear by a lever K, pivoted to the base A, and connected with a footlever L, extending around the front of the base and pivoted thereto. A spring M, secured to said foot-lever and to the base A, serves to throw the cone-pulley out of gear when the foot of the operatoris removed from the foot-lever. I make no claim to the specific mechanism for driving the crank-shaft and imparting movement to the oscillating head. What I claim, and desire to secure by Letters Patent, is- 1. In a power-hammer, the combination with the pivotally-mounted hammer-helve provided with studs on its upper and lower faces, of an independently-'pivoted oscillat ing head having a jaw above and a jaw below saidl helve, the upper jaw being provided with recesses in line with the studs on the upper face of said helve, adjustable blocks in said recesses provided with studs, spiral springs having their ends encircling the studs of said blocks, and the helve, and adjustingscrews in said upper jaw engaging said blocks, said lower jaw being provided with recesses in line with the studs on the lower face of said helve, adjustable blocks in said recesses provided with studs, spiral springs having their ends encircling the studs of the helve and of said blocks, and independent adjusting-screws in said lower jaw engaging the blocks carried therein, whereby the springs above and below said helve can be independently adjusted, substantially as described. v2. yIn a hammer, the combination with the pivoted helve, of an independently-pivoted, oscillating head, having a jaw above and a jaw below said helve, one of said jaws being provided with apertures extending entirely through the same, detachable plates closing said apertures, adjustable blocks in said apertures, set-screws extending through said plates and engaging said blocks, springs interposed between said blocks and the helve, the other of said jaws being provided with recesses, adjustable blocks in said recesses, adjusting screws engaging said blocks and springs interposed between said blocks and said helve, whereby the springs on one side of said helve may be introduced through the said apertures in one of the jaws in assembling the parts of the hammer, and whereby the springs above and below said helve can be independently adjusted, substantially as described. 3. In a power-hammer, the combination with the pivotally-mounted oscillating head provided with an upper jaw having vertical apertures extending entirely therethrough and a lower jaw provided with recesses in line with said apertures, adjustable blocks located in said apertures in the upper jaw and provided with studs, closing-plates for the upper ends of said apertures detachably secured to the upper jaw, set-screws extending through said plates and engaging said blocks, adjustable blocks located in the recesses of said lower jaw, provided with studs, set-screws passing through said lower jaw and engaging said blocks, of a hammer-helve pivoted independently of said oscillating head, extending between said jaws and provided with studs on its upper and lower faces, and springs interposed between said helve and said adjustable blocks of said upper and lower jaws and having their ends encircling said studs, whereby the upper springs may be introduced through the apertures in the upper jaw in assembling the parts of the hammer, and whereby the upper and lower springs can be independently adjusted, substantially as described. In testimony whereof I affix my signature in the presence of two witnesses. VASHINGTON FOGLESONG. "Witnesses: L. P. WHITAKER, J. D. KINGSBERY.

Power Hammer:

details of action

Power hammer shrinking a head light housing

KYBoyy - You need to gold to breed gold... Yep, a power hammer will be a game-changer. If you want to work efficiently as a one-man shop, its pretty much essential unless you stick with small-sized work.

Anybody using the new Dake power hammer??? They are like $6k but look like well build smaller machines. (I also see eckold is running ad for a $10k...

The MZ75 Power Hammer operates just like a steam hammer. We use a mechanical linkage and a directional valve along with compressed air to operate and control the hammer. There are no solenoids valves or limit switches.

The KZ100 Power Hammer operates just like a steam hammer. We use a mechanical linkage and a directional valve along with compressed air to operate and control the hammer. There are no solenoids valves or limit switches.

The art and philosophy of the junk yard builder. Building machinery from junk the low tech way.

Description No. 751,522. PATENTED FEB. 9, 1904. A. A. KOCH. POWER HAMMER. APPLIoATIoN FILED H1B. 27. 190s. No monm.. v 2 SHEETS-SHEET L WITNESSES: 5l g5 /NVE/VTO/ A TTOHNE YS. No. 751,522. PATBNTED FEB. 9, 1904. A. A.l KOCH. POWER HAMMER. ArPmoA'rloN FILED H1B. 27. 190s. No MODEL. Y 2 SHEETS-SHEET 2. . A 770/?NE Y S. Patented February 9, 1904. PATENT OFFICE. ARTHUR ALFRED KOCH, OF MONIEZUMA, IOWA. POWER-HAMMER. l. SPECIFICATION forming part of Letters Patent No. 751,522, dated February 9, 1904. Application led February 27, 1903. ySerial No. 145,326. (No model.) To MZ whom it may concern: Be itknown that I, ARTHUR ALFRED Kool-T, a citizen ofthe United States, and a resident of Montezuma, in the county of Poweshiek and State of Iowa, have invented a new and Improved PowereHammer, of which the following is a full, clear, and exact description. ` This invention relates to improvements in power-hammers, an object being to provide a simple means for quickly changing the fulcrum-point of the hammercarrying lever, and consequently changing the length ofthe hammer movement without changing the length of the eccentric-rod, as is generally practiced. I will describe a power-hammer embodying my invention and then point out the novel features in the appended claims. j Reference is to be had to theaccompanying drawings, forming a part of this specication, in which similar characters of reference indicate corresponding parts in all the figures. Figure 1 i's a side elevation of a power-hammer embodying my invention. Fig. 2 is a plan view thereof. Fig. 3 is a front elevation, and Fig. 4 is a sectional detail view showing the fulcrum-pin. Referring to the drawings, 1 designates the baseof the power-hammer, on which is a post or standard 2 and an anvil 3, the said anvil being removably seated in a boxing 4, attached to the base. The hammer-carrying lever 5 is 'longitudinally slotted, and the hammer 6 is attached thereto by means of an iron yoke 7, from the ends of which a leather or similarly iexible strap 8 extends through an opening in the end of said lever 5. One end of the strap 8 is connected to the yoke 7 by means of links 10, and connected to the other end of the yokev by means of a screw-rod 11 are tightening-nuts 12. By manipulating these nuts it is obvious thatthe tension of the strap 8 may be changed as desired. By employing the iexible strap 8 the jar of the hammer upon striking is materially lessened. The lever 5 is fulcrumed on a pin 13, a block 14 on said pin being movable in a slot in the lever. Also on the pin 13 are blocks 15, adapted to slide in slotted guides 16, rigidly attached to the upper portion of the post 2. rIhese guides are arranged at a forward and downward angle, so that by moving the pinf13 along the same the fulcrum-point of the lever 5 maybe changed to regulate the thrust or length of movement of the hammer, and this changing of the ful? crum-point may be done while the machine is in motion through the agency of a lever 17, having a foot-plate 18, the said lever being pivoted to the post or standard 2 and engaging at its upper end with one end of the fulcrum-pin. A member 19 is attached to the lever 17 and extends around the post 2 and y connects with the opposite endof the fulcrumpin. The lever 17 is held as adjusted by engaging with a rack 20. The rear end of the lever 5 is pivotallyconnected to an eccentric-rod 21, consisting ofI two threaded sections engaged by a turnbuckle 22, by means of which the rod may be shortened or'lengthened, as occasion may require through wear, or to provide for a greater or less throw of the hammer than is f possible through the agency of changing the fulcrum. The eccentric-rod engages with an eccentric 23 on a shaft 24, which has a bandwheel 25, engaged by a band 26, .driven from any desired source. At one side ofthe bandwheel25 is a brake-disk 27, designed to be engaged by a brake-shoe 28 on an angle-lever 29, pivoted to a stud 30 on the base of the machine. A belt-tightener, consisting of a roller 31, is mounted on an arm 32, pivotally connected to the upwardly-extended portion of the angle-lever 29, and the roller 31 may bel adjusted outward or inward with relation to the belt and held in such adjustment by means of a bolt 33, passing through an arc-slot 34 in the upper end of the angle-lever. Afoot-treadle 35 is pivoted to a stud 36 on the base, and the forward end of this foot-treadle is extended around the boxing 4, so that it maybe readily reached by the foot of the operator standing at any point around the anvil. The rear end of the treadle is curved upwardand connected by means of a link 37 with thel upwardly-extended portion of the angle-lever 29. To prevent the lengthwise movement of the hammercarrying lever, it is connected by means of straps 38 with the forward ends of the guides 16. The rear ends of'these straps 38 are here shown as connecting with a pivot IOO attaching the lever 5 to the eccentric-rod. The hammer 6 is movable in guides 39, adjustably attached to an arm 40, extended forward from the post or standard 2. When the machine is in operation, the attendant holds the forward end of the treadle 35 down, consequently tightening the belt on the belt-pulley and releasing the brake. When the operation of the machine is stopped7 the attendant removes his foot from the treadle and the tightened belt will cause the tightener 31 to be thrown rearward, which will move the brake-Shoe 28 into engagement with the brake-wheel, where it will be held by the weight of the pulley 31. As before stated, the fulcrum-point of the hammer-carrying lever may be changed by moving it up or down the incline of the guides while the machine is in operation. Having thus described my inventionlclaim as new and desire to secure by Letters Patentl. A power-hammer, comprising a standard, downwardly-inclined guides attached` to the standard, a fulcrum-pin supported by said guides, a hammer-carrying lever mounted on thc pin, a foot-actuated lever connecting with one end of said pin, and a member attached to the lever and connecting' with the other end of said pin. 2. A power-hammer, comprising a standard, downwardly-inclined guides attached to the standard, a fulcrum-pin supported by said guides, a hammer-carrying lever mounted on the pin, a foot-actuated lever connecting with one end of said pin, a member extended from said lever to the other end of said pin, andan eccentric mechanism for operating' the hammer-carrying lever. 3. A power-hammer, comprising a standard, guides on said standard, a fulcrum-pin movable along said guides, a hammer-carrying lever mounted on said pin,a connection between said lever and said guides to prevent length- Wise movement of the lever, and means for actuating the lever. In testimony whereof I have signed my name to this speciiication in the presence of two subscribing' witnesses. ARTHUR ALFRED KOCH. Vitnesscs: CHARLES W. CLARK, JENNIE ALLELY.

Here are some images of power hammer tools I have come across. Most of them are used in  the industrial forging industry. I find that most o...