US1850342A - Starter crank construction for internal combustion engines - Google Patents

Description

March 22, 1932. E Y 1,850,342 7 STARTER CRANK CONSTRUCTION FOR INTERNAL COMBUSTION ENGINES Filed Nov. 19, 1929 2 Sheets-Sheet l g/m/ 4% INVENTORN %Mr W ATTORNEYS March 22,1932. T. A. DELANEY 1,850,342

STARTER CRANK CONSTRUCTION FOR INTERNAL COMBUSTION ENGINES Filed Nov. 19, 1929 2 SheetsSheet 2 A TTORNEY5 Patented Mar. 22, 1932 STATES THOMAS A. DELANEY, or SYRACUSE, NEW YORK, ASSIGNOB TO CHARLES s. BROWN, V or SYRACUSE, NEW YORK STARTER CRANK CONSTRUCTION FOR INTERNAL COMBUSTION ENGINES Application filed November 19, 1929. Serial Ito 408,219.

This invention relates to starting mechanisms or starting crank constructions for 1nterna-l combustion engines, and has for its object a particularly simple and eflicient coupling between the engine shaft and the starting crank or shaft when arranged at an angle to each other, whereby the engine shaft can be cranked and after'starting will uncouple the starting shaft or crank therefrom as readily as in engines wherein the crank shaft and starting shaft and crank is in alinement and also whereby the two shafts will uncouple when the well known kick back action takes place when the engine fails to start.

The invention consists in the novel featur'es and in the combinations and constructions hereinafter set forth and claimed.

In describing this invention, reference is had to the accompanying drawings in which like characters designate corresponding parts in all the views. 7 y 1 Figure 1 is a fragmentary plan view of a portion of the frame of the motor agricultural machine embodying my invention.

Figure 2 is a side elevation of parts seen in Figure 1.

Figure 3 is an enlarged elevation, partly in section, of the end of the starter shaft.

Figure 4 is a similar view of the engine shaft.

Figure 5 is an end view of parts seen in Figure 3.

Figure 6 is an end View of parts'seen in Figure 4.

My invention, as here shown, is embodied in an agricultural machine having a single steering wheel 1 at the front end of its frame 2 with the engine mounted in the rear of the steering wheelwith the front end of the engine or crank shaft 3 arranged near and in line with the vertical turning axis of the wheel 1 so that the wheel interferes with cranking the engine with a crank in line with the engine shaft.

The wheel 1 is mounted in a suitable fork 4, the head of which is journalled in an upright bearing 5 at the front endof the frame 2. The engine is suitably mounted on a frame. Further description is thought to be unnecessary as the only feature it is necessary to bear in mind is that the crank shaft 3 or the front end thereof is obstructechby the wheel 1 so that it cannot be cranked with an ordinary. crank alined with the engine shaft 3. j j r 6 designates the starter-shaft which has the usual crank handle 7. This shaft 6 is preferably permanently mounted in a bearing 8 suitably mounted on the frame 1 and is movable endwise to engage the crank shaft 16 against the action of a returning spring 9. The bearing 8 and the starter shaft 6 are arranged at an oblique angle to the shaft 3 so that the crank handle and the wheel 1 in any angular position thereof will not interfere crankshaft 3. The other of the shafts 3. 6,

here shown as shaft 6, is provided with a head 14 formed with a ball 15 fitting the segmental socket 10, and also with jaws or pins for coacting with the slots 11 or the jaws formed thereby.

The jaws of the head 14 have a universal joint action so as to remain in engagement with the slots 11 during the turning of the starting crank. The socket and head constitute separable sections of a coupling.

In the illustrated embodiment of my invention, the jaws on the starter crank are trunnions or pins 16 formed at the ends of a member 17 extending diametrically of the ball 15 and located in a diametrically extendingslot 18 formed in said ball. the member 17 being pivoted between its ends at 19 to the ball on a'pivot extending diametrically of the ball and transversely of the slot 18.

The jaw portions or trunnions project beyond the periphery of the ball. The portion ofthe member 17 within the slot 18 is provided with inclined surfaces 20 opposed to the flat bottom 21 of the slot in order to prevent undue pivotal movement of the member a 17 or to permit suflicient displacement of the I and the trunnions memb'er 17 so that thetrunnions 16 will enter the slots 11 but at the same time permit a universal joint action.

In operation, a starting crank is pushed in wardly against the action of the returning spring 9 until the ball 15 seats in the socket 10 16 interlock in the slots 11. In the event, the trunnions 16 are not alined with the slots 11,, when the starter crank is first pushed inwardly, the crank is'turned un:

til the trunnionsfind the slots and then pushed inwardly toits full extent While the trunnions are adapting themselves to the slots and the ball 15 is seating in the socket 10, the member 17 rocks on its pivots The crank is then turned to crank the engine shaft 3 and during such movement member 17 rocking on its pivot. 7

When the engine starts under its own'power, the crank is pushed outwardly by the camming action'of the slots 11 on the trunshaft extending'at an angle to the engine shaft, one of said shafts beingformed with a segmental ball socket and with jaws and theother shaft being formed with a ball for entering the socket and pinscomplemental to thejaws of the-socket, the said set'of pins beingmountedto'have a universal joint action and said jaws being shaped to shift the startingshaftaxially upon turning of the engine Y shaft relatively to the starting shaft.

2. The combination with the crank shaft of an internal combustion engine, of a starting shaft extending at an angle to theengine shaft, one of said shafts being formed witha segmental ball socket and with slots extending inwardly from the outer edge of the ball socket and forming a setof jaws and the'other shaft being formed with aball for entering the socket and'with a memberextendingdiametrically of the ball and formed with trunnions for entering theslots,-the trunnions forming engaging members complementary to the said set of jaws, said first mentioned member being mounted in the ball to have a universal joint action.

3.. The combination with the crank shaft of an internal combustion engine, of a starting'shaft extending at an angle to the en gine shaft, one of said shafts being formed 7 with a segmentalball socket and with'slots extending inwardly from the outer edge of the ball socket and forming a setof jaws and theother shaft being formed with a ball for entering the socket aand'with a member extending diametrically of the ball and formed with trunnions for entering the slots,

the ball 15 and trunnions 16 act universal jointfashion, the

Also, if the enr the trunnions forming engaging members complementary to the said set of jaws, the ball being formed with a diametrically extending slot andsaid first mentioned member being located in'the slot and pivoted therein on an'axis extending transversel of the slot and diametrically of the ball, said trunnions projecting beyondthe periphery of the ball. The combinationwith the crank shaft oflan internal combustionfengine, ofa starting shaft extending at an angle to the engine shaft, the crank shaft being formed with asegmental ball socket member formed with .slots extending inwardly from the outer socket member and forming a a ball memberemountedaon the edge of the setof jaws, starting shaft complemental to the, socket,

the ball being formed with adiametrical'ly extending slot, a member pivoted in the slot on an axis extending diametrically of the ball and transversely of the slot, said memperiphery of the ball forentering said slots.

5. The combination with the crank shaft.

her having'trunnions projecting beyond the a V shaft and shiftable'into and out of engagement therewith, a coupling for connecting the shafts including separablesections mounted respectively on the shafts and having means forforminga universal joint when thesections are coupled together.-

6. The combination with the crank shaft of an internal combustion engine, of a starter crank extending at an angle to the engine shaft and shiftable into and .out of engagementtherewith, a coupling for connecting the shafts including'se arable sections mount,- ed respectively on t e shafts and having means for forming a universal joint when the sections are coupled together, said means comprising substantially rigid jaws-on'one of said sections and a membermounted on the other of said sections to have a universal joint action when the sections are engaged,

said member having pins for coacting with the former jaws.

Y 7. The combination with the crank shaft of an internal combustion engine, ofia starter crank extending at an angle to the engine shaftsand shiftable into and out of engagement therewith, a coupling for connecting the shafts including separable, sections mount- 7 ed respectively on the shafts and having means for forming a universal joint when the sections are coupled together,said means comprising substantially rigid jaws on one of said sections and a member mounted on the other of said sections,.said member extending diametrically of the section on which it is mounted and being pivoted thereto to have a universal joint action and being provided with pins to coact with "the former jaws. I j

.8 The'combination'with the "crank shaft of an internal combustion engine, of a starter crank extending at an angle to the engine shaft and shiftable into and out of engagement therewith, a coupling for connecting the shafts including separable sections mounted respectively on the shafts, one of said sections being provided with diametrically eX- tending slots opening through the outer face thereof to form jaws and the other of said sections having a diametrically extending member pivoted between its ends in order to have a rocking movement, said member being provided with trunnions at its end forming pins to coact with the former jaws.

In testimony whereof I have hereunto signed my name at Syracuse, in the county of Onondaga, and State of New York, this 16th day of November, 1929.

THOMAS A. DELANEY.

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