Haven't done a layout with board mounted pots in a while, so here's the Lovepedal Black Magic. It's a LM386 based distortion that tries to g...

Check out these kerf bending patterns for your laser cut projects from Martin Breuer: I recently discovered that kerf bending is perfect for building small cases. Take a pice of plywood, cut out a …

I realized after posting the Meathead Deluxe I hadn't made a layout for the one-knob Meathead. Anyway, the Meathead is one of most well know...

For Fuzz Friday here's a really cool circuit designed by Lubdar over on the Madbean forum . It's inspired by Death by Audio designs and can...

Got several requests for this one. The MI Audio Crunch Box is a versatile distortion box, designed to sound like a cranked Marshall. It's ve...

The Eternity Overdrive is kind of like the Big Muff of Lovepedal in that it has a ton of different versions (there are over 10 I believe), b...

Here's an optical compressor I came across on FSB and hadn't seen a layout of it before. There's some question as to whether the schematic i...

Got a little booster circuit that should go together pretty easily. It's pretty much an Electra without clipping diodes and a large value re...

Since the Zakk Wylde overdrive from last week was based on the SD-1, I figured I might as well go ahead and lay that circuit out as well. Th...

we can learn How to make turbo bass for amplifier circuit diagram? if we use this circuit diagram to our amplifier the sound will be so good.

Gnarly, oscillating fuzz tone–this is a bit of a weird one. The original used both positive and negative 9v (which I have a hard time wrappi...

Here's quick on for your Friday. The Luxury Drive is a simple JFET boost circuit and is the same as the boost section of T Jauernig's Gristl...

This is a library of perfboard and single-sided PCB effect layouts for guitar and bass for pedal building enthusiasts.

This is a library of perfboard and single-sided PCB effect layouts for guitar and bass for pedal building enthusiasts.

The Boost 'n' Buff is a simple little booster that doubles as a buffer when it's turned off (so it's not a true bypass effect). You should b...

I thought I'd mix things up a little this week and post some synth circuits people might be interested in. To start things out, here's a mod...

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Description Nov. 26, 1929. J. R. HILSTAD METAL BENDING TOOL Filed July 1, 1925 -D mm m5 m. mH E W J. m ATTORNEYS. Patented Nov. 26, 1929 UNITED STATES PATENT OFFICE JOHN ROY HILS'IAD, OF WHITTIER, CALIFORNIA, ASSIGNOR, BY DIRECT AND MESNE I ASSIGNMENTS, TO GEORGE G. GRIFFITH, OF MONROVIA, CALIFORNIA METAL-BENDING TOOL Application filed July 1, 1925. Serial No. 40,963. My invention relates to and has for its purpose the provision of a metal bending tool particularly adapted, although not necessarily, for the straightening of bent or otherwise distorted automobile fenders and running board brackets, the tool being simple in construction and easily operated to restore any fender or bracket to its original form without the necessity of removing the fender or bracket from the vehicle and without scratching or otherwise disfiguring the fender. I will describe only one form of metal bending tool embodying my invention and will then point out the novel features thereof in claims. In the accompanying drawings Figure 1 is a view showing in longitudinal section one form of metal bending tool embodying my invention in applied position to a fender and bracket. Figure 2 is a perspective View of the tool shown in Figure 1. Figure 3 is a view showing the tool in end elevation and as applied to a fender. Referring specifically to the drawings, in which similar reference characters refer to similar parts in each of the views, my invention in its present embodiment comprises a lever L one end of which is adapted to be pivotally supported in spaced relation to any support to which the tool is applied by a foot F and in such manner that a hooked member II may have operative engagement with the article to be bent so that by exertin a pull on the lever the hooked member will e actuated to bend the article as desired. The lever L in the present instance comprises a fiat bar of suit-able length which is bent at a point intermediate of its ends so as to give the lever the form of an anticlme. Secured to opposite sides of the lever at one end thereof are a pair of plates 15, the outer surfaces of which are rounded and knurled as shown, so as to co-operate in providing a handle adapted to be gripped in the manipu lation of the lever. Adjacent the opposite end of the lever, the foot F is pivotally connected thereto and this foot in the present instance comprises a casting including a base 16 extending transversely of the lever and provided on its upper side with a pair of arms or ears 17 through which is extended a pivot pin 18 to pivotally secure the end of the lever between the arms. The base 16 has secured thereto a pad 19 formed of any suitable soft material so as to prevent marring of the surface of the fender or any other article to which the tool is applied. In order that the foot F may occupy proper operative position with respect to the lever L and to thus facilitate the application of the tool to an article to be bent, a stop pin 20 is extended through the lever so as to be engaged by the arm 17 and thus eliminate the outward swinging movement of the foot with respect to the lever. The hooked member II is associated with the lever L so as to be capable of two adj ustments, one longitudinal of the lever and the other transverse of the lever. The longitudinal adjustment of the hooked member is effected through the medium of a bolt 21 extending through the bifurcated end of the hooked member, withthe lever received between the bifurcated end and formed at its upper edge adjacent the bent portion of the lever with a plurality of notches 22, the bolt being received within any one of the notches and thereby pivotally supporting the hooked member on the lever within any one of the notches. The transverse adjustment of the hooked member with respect to the lever is effected by an adjustment of the bolt longitudinal of the hooked member, and by providing the bifurcated portion of the hooked member with a plurality of openings 23, the bolt can be extended through any one of these openings thereby varying the position of the hooked end of the member with respect to the lever. In practice, the tool is capable of being applied and manipulated to effect the bendin of the fenders and the various. brackets used in supporting fenders and other parts of an automobile. However, a description of the invention in one of its uses is being made as illustrated of all of its uses. As shown in Figure 1, the tool is applied to an automobile fender for the straightenscribed only one form of metal bending'tool ing of one of the fender supporting brackets, and in this adaptation the foot F is applied to the inner edge of the crown of the tender so as to provide a pivotal mounting for the lever L with the latter extended transversely of the'tender'. In this p'IDSitl0n 0ff bl-16 lBV'Gl, the hooked memb erH' clependsfrom the lever and by proper horizontal adjustmentrmay be v positioned so that its hooked end engages the flange at the outer edge of the Tender-at apoint directly beneath the point of connection of the bracket of the fendeizvVith'th-e tool applied in this manner, it will be clear that by gripping the handleand pulli-ngup wardly a force will be exerted on the lever to swing the latter upwardly about the 3 pivot 18 as a center thereby pulling the hooked member upwardly with sufiicient force to "bend the fender" bracket and thus restore the latter to original form assumin'g that the horizontal portion of'the fender bracket has the lever L ispul'l'ed-upwardly its inner pivoted end'p'ushes with downward force the foot F, but this force operates to no detriment in so far as bending the fender or bracket at the point of contact. In view'of the spaced relation of; the mounting for the lever and the hooked. members, it will be clear'thata greater leverage i's'pro'duced wliich facilitates the bending of the brackets and fen'd e'rs'. By virtue of tlie'twoad'jus'tments "of the hooked member as wellias the'adjustability of the foot, the tool is adapted tofend ers and" brackets of various pr )portio'ns,v and in any of its uses provides simple and'e'fiective means "for restoring-the original contour of a'bracket orfte'nderr Although I have herein shown and deenibodying my invention, it is to be understood thatvarious changes and modifications may be made therein without departing from I the spirit of the invention and the spirit and "scope ofthe appended claims; \Vhat Iclaim is: .1. A metal bending tool 'comprisinga level", a' supporting foot pivoted on oneend oiithe lever, a pin extending from the lever for limiting the'swingi -movement oft hefoot in one direction on the lever, and a hooked member bodily adjustable and'piv'oted on the "lever at a point spaced-from the foot. 2. A metal bending. toolcomprisin g a lever of anticlinalifoian, a bifurcated'foot pivoted .on one end of the'lever, means'for limiting the swinging movement of the foot in one direction of the. lever, saidllever being formed 4 ,with notches,and a bifurcated hooked mem- I her having a pivot-pin extendedvthroughthe bifurcated portion of the member andengaging with any one ofsaid notches: and adjustlever, meansfor limitingthe swinging movement ofthefoot 1n one lireetien (if tnelever, said Ieverbing formedwith notches, and a bifurcated hooked member having a pivot pin extended through the bifurcated portion of the 'member and 'engaging with any one of said notches and adjustably and pivotally supporting the-member on the lever. JOHN ROY HILSTZXD. been previously bent doi'vnwardl'y" or'inwardlyi Of course, itis tobe understoodthatas