US1516873A - Accelerator - Google Patents

Description

Nov. 25, 1924, 1,516,873

1.. M. WILLIAMS ET AL ACCELERATOR Filed Aug.'18. 1922 2 sheets-Sheet 1 INVENTORS L. H. WILLIAMS P. .1. WILLIAMS BY 5.1., WILLIAM-5 ATTORNEYS Nov. 25, 1924. 1,516,873

L. M. WILLIAMS ET AL ACCELERATOR Fil d Augl8, l9?) 2 Sheets-Sheet 2 INVENTOR 4.. WILL/ANS p. WILL/AME B 5.1.. WILL/ANS ATTORNEYS Patented Nov. 25, 1924.

UNITED STATE S PATENT OFFICE.

LLOYD M. VIILLIAMS, PERCY J. WILLIAMS, ANB CHESTER L. WILLIAIIIS, OF SAN FRANCISCO, CALIFORNIA; EEIIJIA F. WILLIAMS, ADI-I INIS'IR-A'ERII'L OF SAID CHESTER L. WILLIAMS, DECEASED, ASSIG-NORS T0 "WILLIAMS BROS, AIRCRAFT COR PO'RATION, OF SAN FRANCISCO, CALIFORNIA, A CORPORATION OF CALIFORNIA.

ACCELERATOR.

Application 11166. August 18, 1921. Serial Ho. 493,28.

To all whom it may concern:

Be it known that we, LLOYD M. VVILLIAMs, PERCY J. WILLIAMS, and Crins'rnn L. VVIL- LIAMS lGSlCllDg at San Francisco, in the county of San Francisco and State of California, have invented new and useful Improvements in Accelerators, of which the following is a specification.

This invention relates to improvements in internal combustion engine accelerators of the ty 3e used in connection with motor cars and which provide for control of the fuel.

One of the objects of the invention is to provide accelerator mechanism of the char acter described which may be readily and easily incorporated with the standard or factory equipped throttle controlling mecha nism 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 permit of independent operation of the hand and foot operated means so 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 Way of simplification of structural arrangement and reduction of the number of parts employed, by way of increased compactness and decreased cost of production and provision of an easier and more reliable and certain attachment and operation of the mechanism.

The invention possesses other advantages and features some of which, with the fore going will be set forth at length in the fol lowing description where we shall outline in full that form of the invention which we have selected for illustration in the drawings accompanying and forming a part of the present specification. In said drawings We have shown one form of the construction of our invention, but it is to be understood that we do not limit ourselves to such form since the invention as expressed in the claims may be embodied in a plurality of forms.

Referring to the drawings: Fig. l is a broken plan view of a portion of an automobile showing the mechanism of this invention attached thereto.

Fig. is a fragmentary sectional viewtaken thru the foot boards and showing partly in section and in elevation the foot operating means or pedal.

l ig. 3 is an enlarged top plan view of one of the specially constructed elements of the mechanism of this invention.

Fig. l is a cross sectional view taken on line 4id of Fig. 3.

5 is a top plan view of one of the justing members of the invention.

Fig. 6 is a vertical sectional view of member shown in Fig. 5.

Fig. 7 is a broken top plan view similar to Fig. 1, showing a modified form of guide for the flexible wire.

Fig. 8 is an enlarged side elevation of the foot or pedal operated mechanism showing it partly in section and Fig. 9 is a fragmentary sectional View showing the socketed end of the pedal.

Referring to the drawings:

1 designates a foot board of an automobile of a well known make, thru which foot the board the usual steering mechanism 2 eX-- tends and upon which steering mechamsm a standard hand throttle controlling means 3 is mounted. The means 3 comprises a 1'0- tatable rod 4, an operating handle 5 working in conjunction with a notched quadrant 6 of the steering wheel 7. A crank arm 8 is attached to the lower end of the rod 4 and is disposed beneath the floor boards. The

13 to the outer end of the crank arm 8, the

other end of the rod 11 extends to a point adjacent to the throttle valve crank arm 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 slidablc or movable upon the rod 11. The sleeve carries an apertured car 15 in the aperture of which a pin 16 is fixedly mounted. This pin is pivotally secured by means oi? the usual elements 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 rod 11, by a helical expansion s g 19 which surrounds the rod Ill. and at ts ends abuts one endof the sleeve 18 and a collar or stop member 20 surrounding and fixed to the rod 11 at a point spaced from the outer end of 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 24 of the rod- 11. The body of the member 18 is oppositely slotted from one end as at 24 and as a means for locking the member in adjustedposition a cotter pin 25 is inserted th ru an opening provided in the rod and lies within the slots 24. By removing the cotter pinthe member may be turned upon the rod to cause it to move longitudinally. The carburetor is provided with the usual adjusting mechanism 26 which cooperates with theadjustable stop member 18 in adjusting the mechanism.

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 intermediateof'its ends as at 30 on the foot board 27"and is provided'with an opening 31 in its. outer end. Thru one side of the opening'aslot 32 is cut and corresponding to this an opening and a 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 endto the pedal 29 and likewise connected at its other end to the sleeve 14. A substantially semi-circular member 37 is fixer to the upper end of wire 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, as to relieve strains on the wire 36. By having slots in the pedal, plate and socket, the wire and the member 37 may be quickly and easily fitted into. and removed from connection with the pedal. Y

The other endof the wire is clamped upon the top of an extension 40 carried by the sleeve 14. The extension 40 is provided with an opening 41 thru which a 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 of the bolt into position to clamp the wire 36 upon the extension 40, as shown in Figs. 3 and 4. The extension 40 is provided on opposite sides with flanges 44 between which the head of the bolt lies in such position that the head is held against turning by said flanges. These flanges are notched as at 45 and the wire engages in the notches, as shown in Figs. 3 and 4. end of the wire may be securely adjustably connected to the sleeve, the securingor ad justing or detaching being easily and quick ly efiected. r

As a means for guiding and holding the vire so as to provide for an easy pulling thereof when the pedalis 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 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. 1" we employ a curved tube 46, one end of which extends into and is held upon a tubular member 4'2, which latter is fixed to e the collar 20. The collar 20 and tabular member 47 may be integral'or otherwise,constructed;

The wire 36 is extended thru-the tubular member 4'? and 'thru the tube 46,. The tube 46 is preferably rigid and of such a curve that free and easy pulling of the wire may be effected when the pedal isv depressedfl We 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. We have found that it is necessary to provide some meansbetween the ends of the wire as a'bearlng and guid mg means against 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 any other means which will provide for this purpose.

Operation.

When the hand operatingmechanism 3 is. actuated 1n the usual manner to open the sleeve 14 and pin 16, the crank arm- 10willbe 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 it moved relative to the rod 11.

When the foot pedal 29 is depressed a pull is communicated to the wire 36 and the sleeve 14 is moved inwardly upon the rod 11 against the action of the spring 19. When said sleeve 14 moves inwardly the crank arm 10 moves to open the throttle valve. This movement takes place without effecting any movement of the rod 11 or in any way moving the hand operating mechanism. Upon release of the pedal 29, the spring 19 expands and moves the sleeve is to normal position and closes the throttle valve. Thus it will be seen that operation of either mechanism independently carried out.

Referring particularly to Figs. 7 and 8, wherein there is illustrated a modified form of the invention, the construction is the same as in the form hereinbefore described, except as regards the guarding and guiding means for the flexible wire 50. in this form the wire 50 is connected with the sleeve 14L at one end and with the pedal 29 at its other end and instead of having a curved rigid tube 46, we employ a flexible tube 51. Preferably this tube is secured at its ends to the tubular member 47 and socket member 35 of the base plate 27. The upper end of the flexible tube 51 engages in the socket 35 so that said upper end is held against moving when a pull is communicated to the wire 50. Thus the tube is maintained in curved form and serves as an efiective guide and bearing to permit of free pulling of the wire and at the same time said tube will flex when the rod 11 moves bodily. Thus operation of either the hand or footmechanism will not efiect operation of the other mechanism.

By the term swivel connection we wish it understood that we have in mind connections other than those wherein a movement of the parts is a rotary as well as a swinging movement and we consider a pivot conncction or a hinge connection to be equivalent to the swivel connection referred to herein, particularly inasmuch as in either and all connections the movement of the wire is limited in its passage through the slots in pedal and pedal pieces regardless of the character of the swinging or swivel connection.

l/Ve claim:

1. In an accelerator, the combination with the hand operated crank arm and the throttle valve crank arm of the throttle valve controlling mechanism of an internal combustion engine, of a rod connected with the hand operated crank arm, a member relatively movable upon the rod and operatively connected with the throttle valve crank arm, a spring normally holding said member extended, a foot operated means and a flexible element connected with said relatively movable member and said foot operated means, said foot operated means comprising a plate, a pedal mounted upon said plate, said pedal having a socket adjacent to one of its ends and provided with a slot openin into said socket, said element adapt ed to enter said socket thru the slot and a member on the element engaging in said socket, said plate having an end opening slot for reception of the element and a depending slotted socket member registering with the slot and socket in said pedal.

In accelerator, the combination with the hand operated crank arm and the throttle valve crank arm of the throttle valve controlling mechanism of an internal combustion engine, of a rod connected with the hand operated crank arm, a member relatively movable upon the rod and operatively connected with the throttle valve crank arm, a spring normally holding said member extended, a foot operated means and a flexible element connected with said relatively movable member and said foot operated means, said foot operated means comprising a plate, a pedal nounted upon said plate, said pedal having a socket adjacent to one of its ends and provided with a slot opening into said socket, said element adapted to enter said socket thru the slot and a member on the element engaging in said socket, said plate having an end opening slot for reception of the element and a depending slotted socket member registering with the slot and socket in said pedal, one end of said guide member engaging in said depending socket member.

3. In an accelerator, the combination with the hand operated crank arm and the throttle valve crank arm of the throttle valve controlling mechanism of an internal combustion engine, of a rod connected with the hand operated crank arm, a member relatively movable upon the rod and operatively connected with the throttle valve crank arm, a spring normally holding said member extended, a foot operated means, a flexible element connected with said relatively movable member and said foot operated means, a projection on the relatively movable member with which said element engages, spaced flanges on said projection having slots therein receiving said element, a bolt inserted thru said projection with its head engaging between said flanges and clamping the element to said projection and a nut holding said bolt in place.

4. In an accelerator, the combination with the hand operated crank arm and the throttle valve crank arm of the throttle valve controlling mechanism of an internal combifsti'o'n engine, of a rod connected with the hand operated crank arm, a member relativ -ely movable upon the rod and operatively connected with the throttle valve crank arm, spring normally holding said member eX- tended, a foot operated means, a flexible elel'i'ientconnec'ted With said relatively movable member and said foot operated means, a "slotted tubular member having internal screw threads mounted upon said "rod and with which -said relatively movable mem-v ber engages, said rod having screw threads coopei-"ating with the screw threads of said tubular member and means for holding the said tubular n'iember in adjusted position arranged to engage in the slots ofsaidmernher. r

n an accelerator the con'i'bination with. the hand operated-crank arm and the throttle valve crank arm of the throttle valve controlling mechanism of an internal combustion engine, of means of connection between Said crank arms including a rod, 21 member movable relative to said rod and connected With said tl-irot tle valve crank arm, a foot opera-"ted mechanism including a flexible element, said movable *member "having a slot therein in which the flexible element mounted and a headed fastening member secured to said movable member, with itshead clamping the flexible element. (5. I n' an accelerator the combination With the hand operated crank arm 'and th'e throttle valve crank firm o-i thethrottle valve controlling mechanism of internal -co1nbi'is'ti'on engine, or' means of connect-ion be tween said "crank arms including a rod, a

member movab'le rela'itive to the rod andco'nneeted with one of'ea id "crank arms, a

member achn'stab'leen said rod and servingas a stop l'or'sa'idmovable member, a pedal, means of ope "atrve connection between the pedal and the movable member, said -ad'

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