US1908205A - Foot operated switch mechanism - Google Patents

Description

May 9,- 933.. RK. WINNHNG FOOT OPERATED SWITCH MECHANISM Filed March 29, 1930 Vlieg:

akku/Mw yao Patented May 9, 1933 UNITED STATES PATENT OFFICE ROBERT K. WINNING, 0F VTAUWATOSA, 'WISCONSIN, ASSIGIIOR 'IO CLUM MANUFACTUR- ING' COMPANY, OF MILWAUKEE, WISCONSIN, A CORPORATION OF WISCONSIN Foo'r OPERATED SWITCH MEoHANrsM Application filed March 29, 1930.

This inventionl relates to improvements in v foot operated switch mechanisms. The type of switch herein disclosed is particularly adapted for controlling head light and dimming circuits in automotive work, and the present application constitutes a companion to my application 370,249 now Patent No. 1,768,028, dated June 10, 1930.

1t is the primary object ofthe present in- "vention to provide further simplification of structure, to facilitate the manufacture of the individual parts and their assembly. It is also my` purpose to eliminate rack mechanism heretofore used in the operation of a switch of this character, and to provide for the positive pedal operation of the switch while` eliminating any possibility of an open circuit. It is also my purpose to provide for a positive snap action in making as well as breaking the circuits. Y

In the drawing:

Figure 1 is a side elevation of a switch embodying this invention, with portions of its terminal head broken away to expose the interior mechanism. i

Figure 2 is a similar view with the terminal head and contacts wholly removed, the pedal and associated parts being shown in section.

Figure 3 is a sectional view taken in the plane indicated at 3-3 in Fig. 1.

Figure 4 is a sectional view taken in the plane indicated at 4--4 in Fig. 2, and illus- 'trating in vdotted lines themethod of assembly. .v

Figure 5 is a detail View in elevation, of the rear ofthe moving contacter showing the ratchet teeth thereof.

Figure 6 is a detail view showing the pre- 'ferred construction for establishing one circuit before the other is broken.

Like parts are identified bythe same reference characters throughout the several views.

The switch case 7 carries a mounting plate `8 which is welded thereto, the ,tubular guide 9 being riveted to the mounting plate before the Welding operation. The pedal rod 10 is reciprocable through guide 9 in the usual way and carries a combined pedal and spring guard 11 within which, and about the guide Serf al No. 439,914.

9, compression spring 12 for raising the pedal.

The inner end of rod 10 is bifurcatcd, and a pin or rivet 15 crosses the slot between the legs thus formed at the end of the rod.

Centrally riveted in the case 7 is a stud or post 16 upon which I mount a cup-shaped spacer 17 at the level of the slot which bifurcates the end of rod 10. Centered upon this stud, and positioned by the spacing member 17, is a Contact actuator 18 best shown in Figs. 2 and 4. r1`he actuator comprises a sheet metal plate of generally disk-like contour upon which are formed ratchet teeth 19 and a radially extending arm :20 which is in pivotal connection with the pedal rod 10 upon the pin 15 thereof. Margin 21 of this arm is iinished to engage a Wall of casing 7 to limit the outward movement of the pedal.

A slot at in the arm is engaged over pin 15. The arm itself tits closely into the slot of the pedal rod and serves to fix the rotative position thereof. The parts are-assembled by thrusting arm Q0 into the slot of the rod with the actuating disk or plate 18 held erect, as shown in dotted lines in Fig. 4. 4The assembled actuator 18 and pedal are then rotated upon the aizis of the pedal through the intermediate dotted line position of Fig. 4 to pin 16 in the course of the movement de" scribed. Y

The moving contact carrier is now positi'oned on stud 16, upon which it rotates with an intermittent step movement. The contact carrier 25 has a dielectric body portion which may conveniently be made of a phenol condensation product. The rearof this body portion has ratchet teeth at 26 complementary to the teeth 19 of the actuator.

The front face of the contact carrier 25 is likewise provided with ratchet teeth at 27. The entire approaches to alternate teeth are covered with the sheet metal contact 28 which has tongues at Q9 extending about the margins of the Contact carrier to anchor the con- Case 7 is closed by a dielectric terminal head 33 which carries terminals 34 and contact springs 35, 36-and 37. These sp act as dogs for engagement with ratchet teeth 5 27 of the moving contact They also furnish the n resilient pressure for proper o the ratchet teeth 19 of the actuator and the complementary teeth 26 at the rear of the moving contact carrier.

1 Finally they-serve as xedcontacts with which themo contact 28 interacts to establish circuitgnalternately between'the current su ply terminal sprin 35 and the current de very springs 36 an 37. The suppllvl 5 35 is in ent en ment wi :heoentral disk 30 of the moving contact 28, whereas contacls 36 and 37 are alternately engagedl with e moving contact exce t at the moment o when they arexboth therewith atthesame The construction is such that one of the s rings 36 or 37 over one of the teeth slightly inadvance of the other. By referring to Fi 6 it will be observed that spring 37 has topped from its nonconducttooth into engagement with the portion cliligthe lmoving contact 28 therebeneath. The

snap action resul `from the passa of the s ring over the too has elimina arcing.

t this moment .contact spring 36 is still engaged with the moving contact 28 Aat the top of the tooth over -which this spring is about to pass. Thus circuits are closed from i springs 36 and 37 mo- If pedal 11 is not given a ull stroke, but its stroke 1s suliicient to engage sp 37 with its tooth, the return movement lcvililgthe pedal will nevertheless causesl a slight additional rotation of the contact carrier suilicient to enga spr' 36 behind its tooth also.

e shi-gEt additional rotation of the contactfcarrier` reduced in the return movement of the pedalJ is partially attributable to the Y and thereby the lengthening, of spring 3 as teeth 19 and 26 pass each other in the' return movement of the parts. As these ratchet teeth pass, they force the con ltJact carrier forward axiaazlly owilidtll, there- !OOUP 'l 513mg e 051311118 con are us compressed, the pedal approaches the limit of its outward stroke, and ther-ratchet teeth: 19 and V26 reach-'the point wheigethey interinesh in a new position of enent.- teeth, particularly the l dofi' teeth l), do lnot have ceairy, e n margins an conasquen y, 05 under the p of the contact springs,

rovided a double ratchet is eective even though the pedal is not moved for a full stroke and.

which, in either of a plurality of positions, is suicient to hold the parts for a change of circuit. I have likewise provided a mechanism in which a distinct snap action occurs both in the make and break of the electrical circuits, ensured by the fact that contact is established at the bottom of the respective teeth instead of being broken at the bottoms thereof, as in the device shown in my previous application above identified.

The mechanism herein disclosed operates with little friction, easily manufactured, and its assembly is greatly facilitated, the last item being very important as com ared with any existing structures lfor simi ar purposes.

I claim:

1. A switch comprising the combination with a support carrying a tubular guide and a pivot stud anchored at one end to said support and having its opposite end free of an" axially slotted rod reciprocable in said guide and rovided with a pin extending trans'- its parts are simple and 'l verse y of the slot therein, a contact actuator fulcrum'ed upon the stud and rovided with a bifurcated arm en aged wit in the slot of said rod and exten ing at each side of the pin, together with relatively fixed and movable contactant which the latter is arranged' to receive movement from rod being dependent upon said actuator for its rotative' 'tion w en the parts are as'- sembled,'an said contact actuator to swing onto and 0B of the free end of said stud.

2; A switch comprising an apertured cass provided with a'central pivot stud anchored at one end to said case, a rod reci rocahle through the aperture of the case an the following elements disposed on said stud in the" order recited, a positioning memberapertured to receive t e oscillatable upon the stud and bearing upon said member, an arm pivotallyccnnectmg said' actuator, said being free to rotate to allow stud, a contact actuator said actuator with said rod, and a set ofrela- I tivel th fixed and movable contacts of which ormeilare mounted on the case and the latter are mounted onsaid stud and operable by said actuator.

3. A comprising an apertured -case provided witha central pivot stud anchored at one end'to said case, a rod reci through the aperture of the case an the following elements disposed on said stud in the order recited, a positioning member apertured'to receive the stud, a contact actuator iai-e rocable al A 1931, in the name of Walter H. Wedger, and the sole applied to the shoe bottom and held under pressure while the cement sets. The softener may be applied both to the sole and to the shoe bottom, though under most conditions it is entirely satisfactory to apply it only to the sole. The pressure can advantageously be applied to the shoe and sole with the aid of a machine of the character disclosed in an a plication for Letters Patent of the United tates Serial No. 388,739, liled August 27, 1929 in the name of Milton H. Ballard.

After the sole has been attached its edge is trimmed, set, etc., a heel 52 attached, the last removed and the shoe treed in the usual manner.

The welted constru my improved shoe eliminates tion of the forepart of the tendency to burn the foot which is found in many shoes having cement attached soles and results from the sealing or air-proofing action of the film of cement between the outsole and the shoe upper in such shoes. In this respect the shoes manufactured in accordance with my invention resemble Goodyear welt shoes and permit the so-called breathing through the inseam which prevents overheating of the foot. On the other hand, the shank construction herein disclosed permits the use, if desired, of soles having extremely narrow shank portions, cottage roof Shanks or indeed Shanks of any other desired character. In this connection it should be noted `r that moldedor conformed soles may be used and that the fitting of wood heels is facilitated in that the construction of the shoe bottom permits the width of the sole at the heel breast line to be governed exactly by the width of the heel.

Having thus described my invention what I claim as new and desire to s ecure by Letters Patent of the United States is:

1. A shoe having its upper secured in lastf ed relation to its insole at its shank portion by staples driven through the marginal portion of the upper materials and into the insole in such a manner that the legs oi? the staples are deflected withoutpassing entirely through the insole, and having its upper at the forepart held in lasted relation to the insole by stitching passing through a welt extending about the forepart of the shoe and through the marginal portion of the shoe upperand the between substance of the insole, the outsole of the shoe being secured to the mar -nal portion of the shoe upper at the shan and to the welting extending about the forepart of the shoe upper as well as to the adjacent portion of the shoe bottom by pyroxylin cemen 2. A shoe having its upper secured at its shank portion in lasted relation to its insole by fastening? driven through the marginal portion of t e upper and into the insole in such a manner that they do not extend entirely throu h the insole, and having its upper at the orepart held in lasted relation to the insole by stitching passing through the between substance of the insole, the marginal portion of the shoe upper and a welt extending about the forepart of the shoe, the outsole of the shoe being cement attached to the marginal portion of the shoe upper at the shank and to the welting extending about the forepart of the shoe upper as well as t0 the adjacent portion of the shoe bottom.

3. That -improvement in methods of manufacturing shoes which comprises mounting upon the bottom of a last an insole the :torepart of which is provided with a peripherally extending lip located a short distance from the margin of the insole, working the man ginal portion of. the shoe upper into lasted relation to the insole, securing it in lasted relation flat against the shank portion of the insole with permanent fastenings and against the lip at the forepart of the insole, stitching a welt to the marginal portion of the lasted shoe upper and to the lip at the forepart of the insole, trimming the surplus upper, welt and insole-lip material from the shoe bottom, and attaching an outsole to the shoe bottom with pyroxylin cement.

4. That improvement in methods of manufacturing shoes which comprises mounting upon the bottom of a last an insole the forepart of which is provided with a peripherally extending lip located, a short distance from the margin of the insole and the shank portion of which is without such a lip, Working the marginal portion of the shoe upper into lasted relation to the insole, securing the upper in lasted osition fiat against the marginal portion ol) the insole at the shank by inserting permanent astenings, securing the forepart of the shoe upper also in lasted relation to the insole, thereafter stitching a welt to the marginal portion ofthe forepart of the lasted shoe upper and to the lip at the forepart of the insole, trimming the surplus material from the lip of the insole, the margin of the shoe upper and the portion of the welt adjacent thereto about the forepart of the shoe, and cement attaching an outsole to the shoe bottom.

5. That improvement in methods of manuacturing shoes which comprises mounting upon the bottom of a last an insole the forepart of which is provided with a peripherally extending lip located a short distance from the margin of the insole'and the shank portion of which is without such a lip, working the marginal portion oi: the shoe upper into lasted relation to the insole and securing it in lasted relation at the shank by staples driven through the marginal portion of the upper into the body of the insole and curving through the substance of the insole without extending to the inner surface of the insole, securin the fore art of the shoe u per, at least rom the orward end of t e shank portion to about the ti line, by staples driven through the margina rtion of the 5 upper and the lip of the inso e, stitching a Welt to the marginal ortion of the lasted shoe upper and to the ip of the insole, said welt extending from the forward end of the shank portion of the shoe about the toe and back to the forward end of the shank ortion on the other side, trimming' the surp us material from the lip of the insole, the margin of the shoe upper and the ortion of the welt adjacent thereto about t e forepart of l5 the shoe, roughening the o'verlasted mar 'nal portion of the shoe upper at the shank o the shoe and the welt as well as the trimmed edge surfaces of the insole lip, shoe upper and welt at the forepart of the shoe, and cement attaching an outsole to the shoe bottom.

In testimony whereof I have signed my name to this specification.

OSCAR C. ADAMS.

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