US1496399A - Accelerator - Google Patents

Description

' June 3 1924. 1,496,399

L. M. WILLIAMS ET AL ACCELERATOR Filed March '27, 1923 LN WILL/AME FZJ. WILL (ANS c. 4. wan/M15 Patented June 3, 1924.

rrsn STATES FFICE.

LLOYD 1vI. WILLIAMS, :enncv J. WILLIAMS, AND cnns'rnn L. winner/is, or sun FRANCISCO, ennrronnrn.

socnrlnaaroa.

Original application filed August 18, 1921, Serial 1 Io. 493,248. Divided and this application filed March 27, 1923. Serial No. 627,959.

To all whom it may concern: 1

Be it known that we, LLOYD M. WILLIAMS, PERCY J. VVILLIAMs, and CHESTER L. WIL- LIAMS, citizens of the United States, residing at 816 Oak Street, in the city and county of San Francisco, State of California, have invented new and useful Improvements in Accelerators, of which the following is a specification. 1 This invention relates to improvements in internal combustion engine accelerators of the type used in connection with motor cars and which provide for control of the fuel.

One of the subjects of the invention is to provide accelerator mechanism of the character described which may be readily and easily incorporated with the standard or factory equipped throttle controlling mechanism of certain makes of motor cars without necessitating any material changes in the construction and arrangement of said standard mechanism or requiring employment of skilled labor.

Another object of the invention is to provide accelerator mechanism which will per- .mit of independent operation of the hand and foot operated meansso that when the hand operated means is operated the operation of the foot mechanism will not be effected and vice versa.

The invention further resides in the particular combination, inter-relation and relative arrangement of certain specially and novelly constructed elements or parts of the mechanism, which elements provide for a general improvement in accelerator mechanism by wayv of simplification of structural arrangement and reduction of the number of parts employed, by way of increased com pactness and decreased cost of production and provision of an easier and more reliable and certain attachment and operation of the mechanism,

With the above mentioned and other objects in view,the invention consists in the novel constructionand combination of parts hereinafter described, illustrated in the accompanying drawings, and set forth in the claims hereto appended, it being understood that various changes in the form, proportion, size and minor details of construction within thescope of the claims may be resorted to without departing from the spirit or sacrificing any of the advantages of the invention.

Fig. 1 is a broken plan view of a portion of an automobile showing the mechanism of this invention attached thereto.

,Fig. 2 is a fragmentary sectional view taken through the foot boards and showing partly in section and in, elevation the foot operating means or pedal.

Fig. 3 is a sectional view partly in elevation showing a detail of construction.

Fig. 4 is a top plan view partly in section, of the mechanism shown in Fig. 3.

Referring to the drawing:

1 designates a foot board of an automobile of a well, known make, thru which foot board the usual steering mechanism 2 me tends and upon which-steering mechanism a. standard hand throttle controlling means 3. is mounted. The means 3 comprises a rotatable rod 4, an operating handle 5 working in con unction with a notched quadrant 6 of the steering wheel 7.- A. crank arm 8 1s attached to the lower end of the rod 4 and is.

disposed beneath the floor boards. The carburetor 9 is provided with the customary throttle valve crank arm 10.

In attaching the mechanism ofthis invention to a motor vehicle of the type. shown in the accompanying drawings, the usual link or connecting rod, not shown, which serves as a means of connection between the crank arm 10 and crank arm 8 is removed and in place thereof a rod 11, is used. The rod 11 is provided with a right angularly bent end 12 which is pivotally secured as at 13 to the outer end of thev crank arm 8, the other end of the rod 11 extends to a point adjacent to the throttle valve crank arm 10 but is preferably, not directly connected therewith. As a means of resilient connection, between the rod 11 and crank arm 10 we employ a sleeve 14 longitudinally slidable or movable upon the rod 11. The sleeve 1 1 carries an apertured ear 1:") in the aperture ofwhich a pin 16 is fixedly mounted. This pin is pivotally secured by means of the usualelem-ents 17 to the outer end of the throttle valve crank arm 10. The sleeve 14 is held extended and in engagement with an adjustable stop member 18 on the outer end of the rod11,by a helical expansion spring 19 which surrounds the rod 11 and at its ends abuts one end of the sleeve 14 and a collar or stop member surrounding and fixed to the rod 11 at a point spaced from the outer endof said rod. This spring normally holds the sleeve so extended that the throttle valve will be closed.

To regulate the extent of the outward movement of the sleeve the stop member 18 has an angularly faced head 22 at one end and is provided with internal screw threads 23 within said head. These screw threads cooperate with the screw threaded end of the rod 11. The body of the member 18 is oppositely slotted from oneend as at 24 and as a means for locking the member in adjusted position a cotter pin 25 is inserted through an opening provided inthe rod and lies, within the slots 24'; By removing the cotter pin the member niay be turned upon rod to cause" it to move longitudinally; The carbureter is provided with the usual adjusting mechanism 26 which cooperates with the adjustable stop member 18 in adjusting the mechanism. v

The foot operated mechanism comprises pedal means consisting of a base plate 27 held by fastening elements 28' upon the foot board 1. A pedal'29 is' pivoted intermediate ofitsendsas at 30 on the foot board 27 and is provided with an opening 31 inits outer end. Through one side of the opening a slot 32 is out and corresponding to this an opening anda slot 33 and 34, respectively are provided in the adjacent end of the base plate 27. Preferably a slotted socket member 35 extends from the under side of the plate 27 in registration with the opening 34. A flexible wire 36 is connected at one end to the pedal 29 andlikewise connected at its other end to the sleeve 14. A substantially semicircular member 37 is fixed to the upper end ofwire 36' and engages in a similar shaped seat 38 therefor, in the upper side of the opening in the pedal. This structure provides for easy movement of the head in the'opening or seat therefor, so as to relieve strains on the wire 36. By having slots inthe pedal, plate and socket, the wire and member 37 may be quickly and easily fitted into and removed from connection with the pedal. I

The other endof the wire isclamped upon the top of an extension 40 carriedby the sleeve-14. The extension 40 is provided with 411 opening 41 through whicha headed screw or bolt 42 is inserted. Nuts 43 are turned upon the screw' threaded end of the bolt so as to bring the head ofth'e bolt into position to clamp the wire 36upon the extension 40, asshownjin Figsl 3' and 4. The extension 401- is provided on opposite sides with flanges 44" between v'v'hichv the-[head of the bolt lies in such position that'th'e head isheld' against turning by said flanges. These flanges are" IrOt'chedras; at 45'; and the 1 wir engages in the notches, as shown Figs? 3" and 4; By" thisconstruction the end of the wire may be securely adjustably connected to the sleeve, the securing or adjusting or detaching being easily and quickly effected.

As a means for guiding and holding the wire so as to provide for an easy pulling thereof when the pedal is depressed, we employ means which will produce a curve or are at a point intermediate of its ends. Since the line of pull from the pedal is approximately at right angles to the line or direction of movement of the sleeve it is necessary to provide this curve in the wire near a point where the same extends outwardly from the rod so that the rod may be pulled freely. As shown in Fig. l we employ a curved tube 46, one end of which extends into and is held upon a tubular mem ber 47, which latteris fixed to the collar The collar 20 and tubular member 47 may be integral or otherwise constructed The wire 36 is extended through the tubular member 47 and through the tube 46, r The tube 46 is preferably rigid. and of. such a curve that free and easy pullingof the'wire maybe effected when thepedal is depressed.

e do not wish to limit ourselves to the use of the curved rigid tube as a means" for guiding and providing for a free and easy pulling of the wire. Vi e have'found that it' is'necessary to provide some means between the ends of the wire as a bearing and guid ing mea'nssagainst or around which the wire may be pulled without undue friction and while we have shown a curved rigid tube for accomplishing this. we wish it understood that we may employ anyother means which will provide for this purpose;

Operation.

When the hand operating mechanism 3 actuated in the usual manner to open the carburetor; the crank arm 3 con nnunicates a pull to the rod 1.1 causing the same to move bodily whereupon, through the medium of the sleeve 14 and pin 16, the crank a'rrn' 10 will be moved so as to open the throttle valve. During this movement, due to the flexibility of the wire 36, no movement' is' transmitted to the pedal 29 nor is the sleeve" 14 moved relative to therod 11.

, When the foot pedal 29 is depre-s'sedaflpull is communicated'to thewire 36 and the sleeve 14 is moved inwardly upon the rodflll against the action of the spring 19. When said sleeve 14 moves inwardlythe crank'arm- 10 moves to open the throttle valve. Thismovementtakes place without etfectingfan y' movement ofthe rod llor in any way" move the hand operating mechanism. Upon re: lease ofthe pe'dal'29, the spring 19 expands and moves the sleeve 14 to normal position and closes-the throttle valve. Thus" it will he seenthat operation either mechanisni' is" independently carried out;

1 ,aeasee This application is a division of the application of Lloyd M. Williams, Percy J WVilliams, Chester L. Williams, filed August 18, 1921, for accelerator, Serial No. 493,248.

WVe claim 1. In an accelerator the combination with the hand operated crank arm and the throttle Valve crank arm of an automobile, of a connection between said crank arms including two members slidably connected with one another and also connected with the re spective crank arms, a pedal, a flexible wire connected with one of said members and said pedal and a curved rigid tube supported by the other of said members and through which said wire extends.

2. In an accelerator, the combination with the hand operated crank arm and throttle valve crank arm of the throttle valve controlling mechanism of an internal combustion engine, of a rod connected with one of the crank arms, a member slidably connected with the rod and connected with another of the crank arms, a pedal, a flexible wire connected with the slidable member and said pedal and a rigid guide member supported by said rod and having a curved surface against which an intermediate portion of the wire slidably engages.

3. In an accelerator the combination with the hand operated crank arm and throttle valve crank arm of an automobile, of a resilient connection between said crank arms including two members movable relative to one another and connected with the respective crank arms and a spring operatively associated with said members, a flexible wire connected with one of said members of said connection and a curved rigid tube being independent of said resilient connection but supported by the other of the members of said connection through which tube said wire extends.

LLOYD M. WVILLIAMS. PERCY J. WILLIAMS. CHESTER L. WVILLIAMS.

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