US1298557A - Air starting means for internal-combustion engines. - Google Patents

Description

O. F. PERSSON. AIR summs MEANS FOR INTERNAL comsusnow ENGINES.

APPLICAUON FILED SEPT. i3. Hi8.

Patented Mar. 25, 1919.

Inventor Ott Pi er-seen, by &4 M

His o ttor'neg.

ID 1w OTTO F. mmsson; or ERIE, PENNSYLVANIA, assmnon T0 was. unaware COMPANY, A CQBPORATION OF NEW YORK.

AIR STARTING MEANS FOR INTERNAL-COMBUSTION-ENGINES.

Specification of Letters l atent. Paton ted Mar. 25, 1919.

Application flle'd sep'ternber la, 191s. semi menses. v L

To all whom it may concern:

Be it known that I, ()rro F. Pnnssox, a

citizen of the United States, residing at Erie,

in the county of Eric, State of Pennsylvania, have invented certain newand useful lm provements in Ali-Starting Means for l'n rernal-(omhustion Engines, of which the following is a specification.

V The present .lllYtHtlOlt relates to air starting means fol-internal combustion engines and has for its object to provide an improved.

construction and arrangement in a mechanism of this character.

For a consideration of what I believe to be novel and my invention, attention is directed to the accompanying specification and claims appended hereto.

In the drawing. the figure is a diagrammatic view of a structure embodying my in rention.

Referring to the drawing, .5 indicates the cylinder and 6 the. )iston of an internal combustion engine. n the head of the cylinder is arranged an'air starting valve 7 which opens lnwardly and is normally held closed by a spring 8 located between a head 9 on the outer end of valve stem 10 and valve casing 11. Compressed air for starting the. engine is admitted to valve casing 11 through a passage 12 with which connects a pipe 13 which leads to a controlling valve 14 provided with an operating handle 14. Valve 14 is arranged to connect pipe 13 to a pipo 15 which leads from a suitable supply of compressed air (not shown) or .to atmos; phere by way of opening 16. ,The head 9 on valve stem 10 is pi'votally connected by a link .17 to one end of a lever 18, the. other end of which is connected to an actuating rod 19 which tern'iinates adjacent a cam shaft 20 and which has on its end a roller 21 adapted to be engagedfbv a cam 22 on cam shaft 20.

(am shaft 20 is foperated from the crank shaft of the engine inany suitable manner.

Lever 18 isfulcrumedon a block 23 which is in the form of a iston and is located in d on the engine cylinder head. Piston 23 is adapted to movein 'cyl; inder 24 to bring, the roller 21' into and out a cylinder 24 oarrie of operative. relation to cam 22. A spring 25 normally holds the piston 23 ins. position .suchthat the roller 21 does not lie in the path of movemen'tof cam 22. Connectedto the upper end of cylinder 24 is. a pipe 26 which leads from the compressed air pipe-13' inertia.

and whenever air is admitted to pipe 13 to start the enlgine it also passes by way of pipe 26 to cylim er 2,4 and forcespiston. 23 downward a), bring, roller 21 into operative relation to cam 22. .27 is a packing to prevent leakage past piston 23, and 28 and; 29 are shoulders which form stops to limit the movements of piston 23. v, p

In the dra\ving,- the controlling valve 14 is shownin such position that pipe 13 is not connected to pipe 15. Spring 25 holds pis-' ton 23 against stop shoulder 29 thus maintaining roller 21 out of the path of cam 22. This is the inoperative position. If new it is desired tocstart the engine, operating handle- 14 is moved from the inoperative position to the starting position which results in connecting pipe 15 to pipe 13. The compressed starting air then flows through passage 12 to the valve 7 and also through pipe 26 to cylinder 24 where it acts on piston 23 to force the. same downward and bring roller 21 into the path of cam, .22 where it will lie-held during the starting operation. The engine will have been previously ada iusted sothat cam 22 is in theposition shown in the draw ng .or it will he.- now adjusted to such position which results in valve '7 "beingiopened and a charge. of starting air ad-, *mitted to the cylinder 5.

of starting ailv to the cylijiden After'the en- "me is started operat ng handloll is moved hack to inoperative position cutting off conimumcatlon between p pes 13 and 15 and connectmg p pe 13' to vent opening 16. The

lievcd to'atmosphere and spring 25 moves piston 23 np against stop shoulder 29' which results'in moving roller 21 out of the path of cam 22.

With the above/described arrangement it will be seen that inyl ringing the roller '21 into the. path of (mm 221 move the'fulerum of lever 18am} that none of the parts enteringinto this operation forms a part of the elements-which are moved by cam 22 in opening valve 7 The weight of'the parts moved by cam 22 are. thus reduced to a pressure above. piston 23 thus quickly relminimum and hence other the least amount of In accordance withthe provisions of the patent statutesjl have described the prin-,

ciple of operation of my invention, to ether with the apparatus which I now consi er to represent the best embodiment thereof, but I desire to have it understood that the ap aratns shown is only illustrative, and t at the invention can be carried out by other means.

\Vhat I claim as new and desire to secure by Letters Patent of the United States, is

1. In an internal combustion engine, the combination of an air starting valve, a cam shaft, a cam thereon, means through which the cam actuates the air starting valve, said means including a lever and a roller, and a movable fulcrum for the lever which is moved by starting air to bring the roller into operative relation to the cam.

2. In an internal combustion engine, the combination of an air starting valve, a cam shaft, a cam thereon, a lever connected to the valve, a rod connected to the lever and terminating adjacent the cam, and a movable fulcrum for the lever which is actuated by starting air to move the end of the rod into operative relation to said cam.

33. In an internal combustion engine, the combination of an air starting valve, a cam shaft, a cam thereon, a lever connected to the valve, a rod connected to the lever and terminating adjacent the can], piston therein. said lever being i'ulerumml on said piston, and conduit means for con-- ve ving starting air to the air starting valve and to said cylinder so as to move the piston therein and bring the end of said rod iiifbf operative relation o the cam when air is admitted to, start the en ine.

In witness Whereo I hereunto set my hand this 10th day of Sept. 1918.

OTTO F PERSSON,

a cylinder, :1

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