US819283A - Sparking-igniter-adjusting device for explosive-engines. - Google Patents

Description

. m aim-as. PATEN'I'ED MAY 1, 190a .T:-. B. JEPFBRY. I SPARKING IGNITER ADJUSTING DEVICE FOR EXPLOSIVE ENGINES.

APPLIQATI N FILED maze, 1905.

UNITED [STATES A TENT orrron THOMAS B.- JEFFERY; F K'E'NosHA, WISC NSIN. SPABKING-lGNlTER-ADJUS'l'lNG.DEVICE FOR EXPLOSIVE-IENGINES- Specification of Letters Patent.

Patented May 1, 1906,

Application filed March 20,1905. Serial it. 251.168;

1'0 ail; whom itmay concern:

Be it known that I, THOMAS B. J EFFERY, a citizen of the United States, residing at Kenosha, in't'he county of Kenosha and State of Wlsconsin, have-invented new and useful Imgovements in Sparking-Igniter-Adjusting evices for Explosive-Engines, of which the followin is a specification, reference being had to t e accompanying drawings, forming a part thereof. 1 The purpose of this invention is'to provide an improved mechanism for regulatmg the be l-crank lever a link timelof sparking or'ignition in an explosive- 1notor,-soas to adjust the sparkin W1th relatiioni to the amount of supply 0i explosive It consists of the features of construction set out in the claims.- r

In the drawings, Figure 1 is a plan view of a portion of a motor-car and driving mechanlsm equlpped with my invention. Fig. 2 is a detall section at the/line 2 2 on Fig. 1.

Upon the vehicle-frame 1 the motor 2 is mounted in any suitable manner and is supplied with the ex'plosive'motive fluid through a pipe 2,the supply being controlled or regu, lated by the supply-valve 3. This valve is controlled at will by the operator, the mechanism for that purpose comprising the rocking wheelor hand-lever 4, which ispivoted for rocking on the standard 5, in which thesteering-shaft 6 is mounted and journaled, having at the upper end the steering-wheel 7 A link 8 from the rocking handle 4 extends down to one arm of the bell-crank lever 8 fulcrumed on the lower bearing of thesteerin -shaft 6, and from the other arm of said 9-extends across the vehicle and is connected with one arm of a bell-crank lever 10, of which the other arnris connected by a link'l 1 with the lever-arm '12 on the stem of they valve 3, the connections being ada ted to cause the valve to be operated for c osing by rocking the hand-wheel 4 downward at the side at connected.

The contact making and breaking device for producing the igniting spark may be of ant well-known construction, provided it invo ves (as is usual) two contact-making points, of which one is on a rotating part and the other on apart which is adjustable about the axis of the rotating for each the contact-making 'the' position at which the which the link 8 is part, so as to vary the point in the rotation at which the contact 00- curs. In the construction illustrated the rotatingupart is the cam 13*, carried on a shaft b 11' ch is driven in the customary manner y t e shaft so as to have one completerevolution complete cycle of the engines action,

engine, being geared with the mainbeing two revolutions of themain shaft. The

adjustable spring-arm 14 which is mounted on an insulating-block 14 on the arm 14. Fromsaid arm 14 aflexible cable 15 extends around a suitable guide 15 to the same arm of the bellcrank lever 10 which is connected by the link 11 with the supply-valve 3, the arrangement of the uides being such that'the movement of the ell-crank lever for closing the valve draws'on-the cable and when the cable is,

taut moves the arm 14 in the direction to re tard ignition by setting the contact-point 14 farther ahead in the path of rotation of the contact-point on the rotating cam 12. A spring 16, connected with the arm 14 and the in the direction for advancing the ignition; A link 17, connected with the frame-bearing, has a slot 17*, in which a stud 14 on the arm frame 1 of the vehicle, operates to retract itv 14 plays asthe arm 14 is rocked, the length of the slot being adequate. for the full range of rocking movement required of said arm 14 ,for chan in the oint of i nition from most advance to most retarded position.

When the valve-moving mechanism is operated foropening the valve, startingfrom valve is closed and the-sparking device set for most delayed ignition, the cable 15 is taut, and the first portion of the opening movement of thevalve permits the arm 14 to be retracted by advance the ignition gradually ofmotive fluid increases. 'hen the action has proceeded so far that the stud 14 reaches the limit of the slot- 17 in the link 17, the sparking-point is at most advanced position and further openin movement of the valve slacks the cable without changing the sparking-point. When the valve-moving devices .are operated for closing the valve, such clos mg movement continues to tllt extent ncccssaryfor taking up the slack of the cable before any change- 111 the sparking-point is part is the lever-arm 14 mounted for swinglng about the shaft 13 and havlngpoint 14, carried on a the spring to as the supply' made. The purpose and effect of this range of adjustment of the parts is to delay the ignition correspondingly to the. diminutionof v the supply of motive fluid after such diniinution has already been made to the point for .moderate power. This makes it possible to keep the ignition-point advanced to' the position for getting the maximum explosive effect from a given moderate quantity of motive fluid, sothat adequate power may be obtained even at slow speed-for certain work, as climbing grades, in which high speed is impracticable, but a large amount of power is requisite, and it also makes it possible to re duce the spee p the combination of two causes operating imultaneously: .to wit, (a) diminution. of the quantity of explosive fluid and (b). a retarding of the i nition, so that a higher )ower can-be obtained at the slow.

speed t an if-the reduction of speed was effected either by reducing the charge alone or by retarding the ignition alone, since if the reduction of the charge alone were relied upon for reduction of the speed the charge would be liable tobecome so Weak as to'be non-explosive', and, on the other hand, if retarding of the spark alone were relied upon the [reduction of compression at the instant of sparking might render the charge non-ex'plosive;. but by changing both the charge and the point of sparking an effectively-explosive charge can be retained and exploded at the low s eed. j

. I -c aim I I '1'. In anexplosive-engine' incombinatio 7 with a valve for controlling the supply of motive fluid, a contact makin and breaking de vice comprising a rotatab 0 element and an adjustable element; movable devices for operating the supply-valve; a flexible cable connecting the said supply-valve-operating devices and the adjustable element of the contact device, and a uide about which the same asses located; or causing said adjustable e ement to be moved positlvely in direction for delayed ignition by the valve-closing movement of the valve-operating devices,

be movedin direction for advanced ignition by the valve-opening movement of the valveoperating devices; a spring for retracting the said adjustable element upon -the .reverse 1 in said retracting movement of the adjustab le element. Y

3.- In an explosive-engine in combination with a valve for controlling the supply of motive fluid, a contact making and breaking device comprising a rotatable-element and an adjustable elementfi'neans for operating the supply-valve at will; a s rin for 'ieldin l holding said adjustable e lemznt at the lii iii t of its'range ofmovement for advanced ignition, and connections between said adjustable element and the valve-operatin means operating by pulling to retract the ad ustable element against the action of the spring in the movement for closing the supply-valve.

4. In an explosive-engine in combination with a valve for" controlling the supply of motive fluid, a contact makin and breaking device comprising a rotatab e element and an adjustable element; means for operating the holding 'saidacljustabl'e element at the limit of its range or movement for advanced igniti'o'n and connections between said adjustable element and the valve-operating means o eratingby pulling to retract the adjustable e ement' against the action of the sprin in the movement for closing the supply-Va ve, said connections being adapted to' yield so as to be'inoperative in pushing.

movement of said devices, and a stop limit- 6 5 supply-valve at will; a'spring for yieldingly In an explosive-engine in combination with a va ve for controlling the supply of motive fluid, a contact making and breaking device comprising a rotatable element and an adjustable element; means for operating the supply-valve at will; a spring for yieldmgly holding said adjustable element at the limit of its range of movement for advanced igni ti'on', and connections between said adjustable element and the valve-operating means operating by pulling to retract the ad ustable element against the action of'the sprin in the movement for closing the supply-Va ve, said connections being adapted to yield so as to be inoperative in pushing, the range of movement of the valve-operating connections for opening and "closin the valve being greater than that of said a justable device,

and the connections being arranged to cause the valve to be closed when said adjustable element is at the limit of its movement for delayed ignition.

6. In an explosive-engine in combination with a valve for controlling the supply of motive fluid, a contact makin and breaking device comprising a rotatab e element and an adjustable element; means for operating the supply-valve at will; a spring for yieldmgly retracting said adjustable element to the limit of: its'range of movement for most ad vanced ignition, and a flexible cable connecting said element with the valve-operating means adapted to operate by pulling on sai adjustable element against the action of its Chicago, Illinois,- this 30th day of January,

"spring in the valve-closin movement, and to A. D. 1905.

J hold said element. at the imit of-its' range of movement for delayed ignition whenthe g valve is closed. WVitnesses: 1 In testimony whereof I have hereunto set i K. E. JEFFERY,"

any haniin the presence of two Witnesses, at l CHAS. S. BURTON.

THo's; B. JEFFERY,

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