US2021502A - Starter control - Google Patents

Description

NOV. 19, 1935. V p FERGUSQN 2,021,502

STARTER CONTROL Filed Dec. 21, 1951 2 Sheets-Sheet l 11v VENTOR maLcolm/ 7P ergwom J fi W ATTORNEY Nov. 19, 1935. M, P, FERGUSON J 2,021,502

STARTER CONTROL Filed Dec. 21, 1931 2 Sheets-Sheet 2 12 TD THROTTL$ ZNVENTOR A TTORNEY Patented Nov. 19, 1935 STARTER CONTROL Malcolm P. Ferguson, Elmira, N. Y., assignor in Eclipse Machine Company, Elmira, N. Y., a corporation of New York Application December 21, 1931. Serial No. 582,413

g c Claims. Tor. 123-179) This invention relates to a starter controlfor internal combustion engines and more particularly to a device for controlling the actuation of a starting system from a manual control member for the engine, such actuation being also controlled by a disabling mechanism responsive to self-operation of the engine.

It is an object of the invention to provide a novel device for controlling an engine starter mechanism from a manual control element of the engine or transmission such as the accelerator pedal or clutch pedal, the controlling connection being broken responsive to self-operation of the engine.

Another object is to provide such a device in which the disruption of said connection is brought about by means of a fluid pressure generated by an auxiliary device such as a pump operated by the engine.

A further object is to provide such a device in which the fluid pressure so generated is prevented from breaking such connection during the cranking operation.

Another object is to provide such a device having provisions for preventing the reactuation of the starting mechanism for a predetermined time after self-operation of the engine has ceased.

Another object is to provide such a device in which the automatic controlling mechanism is operative in response to rotation of the engine in either direction.

Further objects and advantages will be apparent to those skilled in the art from the following description taken in connection with the accompanying drawings in which:-

Fig. 1 is a somewhat diagrammatic showing of a preferred embodiment of the invention, certain of the parts thereof being shown in vertical section;

Fig. 2 is a detail in side elevation of a second embodiment of the invention showing a modified form of controlling means;

Fig. 3 is an end view of the structure shown in F18. 2;

Fig. 4 is a view similar to Fig. 1 of another embodiment of the invention; and

Fig. 5 is an elevation partly in section and partly diagrammatic of an internal combustion engine of commercial type with the embodiment of the invention illustrated in Fig. 4- applied thereto.

Referring to Fig. 1 of the drawings there is illustrated a starting system for an internal combustion engine including a battery I grounded at 2 and connected by a lead 3 to a. starting switch 4 of a starting motor 5 which is grounded at 6 to complete the starting circuit.

A manual control member for the engine is illustrated in the form of an accelerator pedal I having a thrust link 8 with a collar 9 fixed there- 5 on in position to engage a lever i0. Lever I0 is hinged at H and has pivoted to its free end a rod I 2 arranged to operate the throttle of the engine carburetor, not shown.

According to the present invention, means are 10 provided for connecting the accelerator pedal 1 to operate the starting switch 4 when the engine is not in operation. As here shown this connecting means comprises a sleeve member l3 arranged to slidably receive a cylindrical enlargement I4 of the push member 8, and pivoted at l5 to a switch operating lever l6. Lever I6 is hinged at H and carries at its free end an insulated roller l8 arranged to contact the movable member IQ of starting switch 4 to close the switch when the sleeve member I3 is moved by depression of the accelerator pedal.

The sleeve member I3 is normally connected to the push member 8 by means of a latch 2| slidably mounted in a cylinder 22 formed on the 5 sleeve member l3 at right angles thereto, said latch normally extending into the path of shoulder 23 formed on the cylindrical enlargement H. The latch 2| is formed as a piston fitting within the cylinder 22 whereby a vacuum formed in the upper end of said cylinder will trip the latch 2| and disable the connection between the accelerator pedal 1 and switch operating lever l6.

According to the present invention, means are provided for causing the disabling of said con-' nection when the engine is self-operative. As illustrated in Fig. 1, this means comprises an air pump indicated generally at 24 which is preferably mounted directly on the frame 25 of the engine to be started. As here shown this pump comprises a flexible diaphragm 26 arranged to be operated by a bell crank lever 21 which is urged in a direction to raise the diaphragm 26 by suitable means such as a spring 28, and which is positively operated to depress the diaphragm 26 by a thrust member 29 bearing on a cam 3| driven from a rotating part of the engine. Suitable check valves 32 and 33 are provided whereby reciprocation of the diaphragm 26 will cause air to be drawn in through the inlet 34 into chamher 35 and expelled through chamber 36 and outlet 31.

As here illustrated. the inlet 34 is connected by means of a flexible conduit 38 with the upper end of the cylinder 22 whereby operation of the 2 aos'asoa pump causesavaclmmtobeiormedinsaid cylinder, withdrawing andmaintainingthelatch flininoperativeposition. tbepumptl operatesequallyw wh r g engineisrotatingbackwardoriorwardsothat seli-operationoitheengineineitherdirecflon willcausedisablingoiitheconnectingmeansbelleansareprovided for preventing thedis- 1o ablingoisaidconnectionduring'thecranking operation. Minna-Immuneprisesavalvellinterposedintheconduitfland 'havingamovableplungerll pivotedatlitothean cylinderfloisleevememberllandwith openingllregisteringwithtbeinletandoutlet portsoi'saidvalvewhenthesleeve is isinitsnormal'positicn. Iotionoithesleeve a starting switch lever I! which is pivoted to the cylinder 22 at 41 in position to cover said port when the parts are in normal position. Mo-

.tion or the sleeve member I! in a direction to close the starting switch 4, however, causes the port ll to be uncovered. whereby the vacuum createdin thepumpllisineilectivetoraisethe 4,5 latch ll.

Itwillbeunderstoodthattheairpumpllmay beused either as avacuum pump or as a pressurepumpiisodesired. Whenusedas apressure pump it is merely n to connect the so flexible conduit 38 to the outlets! instead oi the inletltandtoiormthelatchtl soastobe pushedawayiromthepumpinsteadoitoward the pump in moving to its inoperative position. Means are provided for preventing the reestablishment oi the connection between the acceleratorpedal landstartingswitchluntilapre-, determinedtime alter the engine has come to rest. Asillustratedinl'ig.l,thlsmeanscomprisesthechamberfloithepumpwhichacts,

so asastoragereservoir,andanadiustablebleeder valve ll which is set to dissipate the vacuum inthechamberllapredeterminedtimeaiter thepumphasetopped.

In the embodiment oi the invention illmtrated 55 in Figs. 4 and 5, the objects of the invention are secured byiutilizing the lubricant pump of the engine to produce the pressure for causing the disabling of the starter connection during the self-operation oi the engine. As there illustrated,the partsoithestartingsystemandtuel controlsystemoi'theenginearethesameas shown in Fig. 1 and are similarly numbered; In this embodiment, however, a latch ll is provided 101' connecting the sleeve member II to the push 7 link I which latch is provided with a shoulder gas be understood that various other ts are possibleandthatchangesmaybemadeinthe a1 and proportions of the parts with- 0 out departing from the spirit oi the invention as defined in the claims appended hereto.

What is claimed is:-

1. In combination. starting for internal combustion engines including a starting switeh,.a manual control member, a connectim ioroperatingsaidstartingswitchirom themanual membenanenginedriveniluidpressurepump, means raponsive to pressure caused thereby i'or disablingsaidconnectionandmeansiorpreventing the operation of said disabling means-durim the cranking operation.

2, In combination, starting for internal combustion engines imluding a starting switch, a manual control member, a connection U ioroperatingsaidstartingswitchtromthemanual member. an engine driven fluid preuure pump, means responsive to pressure caused thereby for disabling said connection and means for preventing the restoration of said connection for a pre- 7 determinedtimeaiteroperationoithepumphas ceased.

3. In combination, starting mechanisms for internal combustion engines including a starting switch, a manual control member, a connection for s,os1,soa v 3 operatingsaidstartingswitchtrom the manual member, an engine driven fluid pressure pump, meansresponsivetopressurecaused therebyicr disabling said connection, means for preventing the operation of said disabling means during the cranhng operation and means for preventing the restoration of such connection for a predeterminedtimeaiter operationotthepump has- -a valve for controlling the tripping action and 'means for moving the valve into position to prevent the trlpning action when the connection is moved to cause actuation oi the starting mechanism.

5. In combination with an internal combustion engine, a starting system therefor including a starting switch, a manual control member (or said engine, a connection for operating said starting switch from said manual control member when the engine is not in operation, a fluid pressure pump. means for operating said pump by rotation or the engine in either direction, means res sponsive to pressure caused therebyi'or disabling said connection, and means for dissipating said pressure a predetermined time after operation of the pump ceases.

6. In combination with an internal combustion 10 engine, a starting system theretorincluding a starting switch, a manual control member for said engine, a connection for operating said starting switch from said manual control member when the engine is not in operation, a fluid pressure pump, 15

means for operating said pump by rotation oi. the engine in either direction, means responsive to pressure caused thereby for disabling said connection, and an adjustable bleeder valve for dissipating said pressure and allowing the reestab- 20 lishment of said connection a predetermined time after actuation of the engine ceases.

MALCOLM P. FERGUSON.

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