US1514860A - Accelerator mechanism - Google Patents

Description

New. 11 1924.

G. e. PEARCE ACCELERATOR MECHANISM Filed Aug. 6, 1923 fl n uam fm 33 George G. Pearce.

4M0 anew Lug Patented Nov. 11, 1 924.

GEORGE G. PEARCE, 0 5 NEW BEDFOED, MASSACHUSETTS.

ACCELEBATGR MECHANISIM.

Application filed August 6, 1923. Serial No. 655,918.

T 0- all who-m it may concern Be it known that I, GEORGE G. PEARCE, a citizen of the United States,residing at New Bedford, county of Bristol, State of Massachusetts, have invented a certain new and useful Accelerator Mechanism, of which the following is a full, clear, and exact description, such as will enable'others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, forming a part of this specification.

This invention relates to accelerator mechanism and is herein shown as embodied in a throttle control. mechanism for regulating the supply of fuel to an internal combustion engine.

Some makes of motor cars at the present day are not provided with a foot controlled throttle and the throttle valve iscontrolled only by a hand lever onthe steering column. This single control gets tiresome after a time and many attempts have been made to combine a foot accelerator with the hand control. These, heretofore, have been complicated and expensiveand require too many changes: in existing mechanism; they get out of order easily and are too troublesome to installto go into general use. An object of my invention, therefore, is to provide a foot controlled accelerator mechanism which can be easily combined with a hand controlled mechanism in a mannerto avoid the above and other deficiencies.

To improve generally on devices of this nature, the invention also consists in the various matters hereinafter described and claimed. In the drawings: 1

Fig, l is a perspective view of an internal combustion engine with my improved mechanism applied.

Fig. 2 is a perspective view of a detail and Fig. 8 is a detail.

The numeral 10 designates an internal combustion engine of well known type with an intake pipe 12, at one, side, leading to the cylinders. A throttle valve controlled by a throttle arm 14 is interposed in the intake pipe, said arm having an opening at the end in which is swivelled a pin 16. The pin 16 is held in the opening by a cotter pin and at its upper end is. provided with an eye or ring 18 capable of sliding movement, under certain conditions, along a longitudinally movable rod 20 which ex t tends across between the cylinders. This rod replaces the usual rod which, in prior apparatus, is connected directly to the throttle arm. The rod 20 has a bent end 22 pivoted to an arm 24 fixed on a rotatively adjustable shaft 26 which is journalled parallel to the, steering column 28 and has a hand control lever 30 movable over a sector 32 to control the supply of fuel. 7 Passed through one end of rod 20 is a cotter pin 34 which normally engages one side of the eye or ring 18, said ring being held against the cotter pin by a yieldable member in the form of a spring 36 coiled around the rod and secured against movement at one end by a cotter pin 38. Z

Swivelled on the pin 16 is a plate 40 having an opening in which is hooked the end link of a flexible member 42, preferably a, chain. The chain is carried around the intake pipe 12 which acts as a pulley, the other end of the chain being fastened to the lower forward. end of a foot controlled push rod 44 having a knob or pedal 46 at its upper extremity. The push rod is conveniently guided by the bent portion 48 of a bracket plate fastened to a bar 50 which connects the intake and exhaust manifolds.

The upper end of the push rod isoifset around the rear end of the engine to bring it into a convenient position for operation and is guided by an opening in a plate 52 screwed to the foot board. 54. A spring 56 is coiled around the push rod, one end being inserted in an opening 58 of the rod and the other end. in an opening 60 in the plate 52.

"Normally, the spring 56 holds the pedal elevated such that there is no tension on the chain, the ring 18 being'then held against the cotter pin 34 by the spring 36. Obviously, .under these conditions, movementof the throttle lever 30 will move the throttle arm in either direction to open or close the throttle valve. Whether the valve is closed or partly open, a pull exerted on the chain by the push rod will open it further, the ring 18 then sliding along the rod 20 and the spring36 yielding. If the foot pedal is released, the spring 56 raises the push rod and the spring 34'restores the valve to its original position by sliding r the l8 back against the'cotter ipinsi.

, anismsfor this improvement are easilypro tages are apparent; I

by reference to a specific apparatus, it should be understood that, in itsbroader aspects, theinvention is not necessarily limited to v p 'Qs'pring engaging the ring and urgingitto-,, wards said limiting means, a push rod ex tendingforwardly beyond said throttle arm, a'flexible member attachedat one'end" the structure selected for illustration. v 1 ile 1. Accelerator mechanism for internal combustion "fmot or's comprising v throttle arm, afiexible member positively connected:

to: "said 7 arm, a foot actuated slidable push rodjforj actuating the .arm' through the i flexible member,independent hand control slidable member to actuate the throttle arm.

mechanism for. said throttle arm, said "mechanism;comprising a solid rod, a, member slidableon, the rod and swivelled'totsaid throttle arm, means on the rod to engage the positively in one direction, and yieldable means directly 'engagingthe slidab-le member to allow'said. throttle arm to be actuated independently by said push rod 2. Accelerator" mechanism "for internal "combustion motors comprising a throttle arm, a flexible member positivelyconnected to said" arm, afoot actuated jpush rod hav-, ing. it rean, end offset around the motor and connected its forward end to said flexible fmember for. actuating the arm through the fle iblamember, handjcont-rol mechanism for) said throttle arm, said j mechanism comprising a rod, a member. slidable on the rod and connected to said throttle arm, a pin on one side of theislidf ablemember, and'af spring engaging the other side of the slidable member.

3, Accelerator mechanism for internal I combustion. motors }comprising a throttle arm, a flexible member connected to said arm, a foot actuatedpush rod slidablealong -& one'side of. the motor adjacent .tothe I, thrOttIeanm for actuatingthe arm through the flexible member, said rod having its rear end offset around the motor, control mechanism for, said throttle arm, sa d mechanism comprising a rod, a pin'swivelled on: said throttle armzand having a ring slidable onthe mama a spring-for urging said ring along the Although the invention has been I described set position. v I

14L. Accelerator mechanism for internal combustion motors comprislng a throttle -zarm,'c0ntrol mechanism for thethrottle arm;

0d to anormal and comprising a'rod, a pin swivelled on said throttle arm and havinga ring slidable on the rod, means for limiting the sliding movement of the ring in one directiom a guide for slidably supporting rsaid push rod. j 5. In accelerator mechanism forinternal combustionpmotors, a fuel intake pip'e,' ,,a

throttle valve for controlling, passage'of fueland having a throttle arm, hand .con

trol mechanismfor said throttle arm, a one .way .yieldable connection, between, said throttle arm and, hand control mechanism, a push rod, and. a flexible connection extends v intake pipe.

ing from said throttletarlmgtothe push rod, saidlflexible member being guided by said 7 v v6. In accelerator mechanism forinternalv intake pipe at ioneside, a throttle valve for cont-rolling the passage of fuel and having a throttle arm, hand" control, mechanism for the 'throttlejarrn, afoot operated push ,rod 7 'extendingbetween the intakeipiple and the engine, and a flexible connection between the throttle arm and said push. rod.)

7'. 111 accelerator mechanism for. internal combustion eng nes, an engine having a fuel intake" pipe at oneside, a throttle valve for controlling the passage of fuel andhaving a throttlearm, a foot pe ate C lg between the intake pipe and thev end entering ahole in the rod and the other between the rod and arm.

a hole in the guide plate, an d"a' connection InjteStiInony whereof. hereunto afiin EORGE PEA-non.

signature.

. combustion motors, an engine having a fuel

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