US902350A

US902350A - Engine-starter.

Info

Publication number: US902350A
Application number: US36749807A
Authority: US
Inventors: Louis S Tuttle
Original assignee: Individual
Current assignee: Individual
Priority date: 1907-04-11
Filing date: 1907-04-11
Publication date: 1908-10-27
Anticipated expiration: 1925-10-27

Description

L. S. TUTTLE.

ENGINE STARTER.

APPLICATION FILED APR. 11. 1907.

902,350. Patented 0@1-,.27,190s.

2 SHEETS-SHEET I.

A Tron/v5 rs W/TNESSES L. S. TUTTLE.

, ENGINE STARTER. APPLICATION TILED APR. 1-1. 1907.

Patented Oct. 27,1908;

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WITNESSES LOUIS S. TUTTLE, OF EASTPORT, NEW YORK.

ENGINE-STARTER.

Specification of Letters Patent.

Application filed April 11, 1907.

Patented Oct. 27, 1908;

Serial No. 367,498.

To all whom 'it may concern.

Be it known that I, LOUIS S. TUTTLE, a citizen of the United States, and a resident of Eastport, in the county of Suffolk and State of New York, have invented a new and Improved Engine-Starter, of which the following is a full, clear, and exact description.

The purpose of this invention is the provision of a hand-operated starting device for internal combustion engines, in which danger while cranking the engine due to backfiring, will be eliminated. With this in view I have constructed a novel form of crank, which automatically operates to release the driven shaft or other mechanism for driving the engine should the engine back-fire, and to be ejected therefrom as the engine starts in the proper direction under the influence of its motive agent.

Reference is to be had to the accompanying drawings forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the figures.

Figure 1 is a central, longitudinal section through one form of my invention; Fig. 2 is a section of the same on the line 22 of Fig. 1.; Fig. 3 is a cross section on the line 33 of Fig. 1; Fig. 4 is a front face view of the crank with the front face-plate removed and the handle in section; Fig. 5 is a view corresponding to Fig. 4L but showing the parts in a position as when the crank is released by the back-fire of the engine; Fig. 6 is a cross section on the line 66 of Fig. 4, Fig. 7 is a view corresponding to Fig. 4 of a modified form of my invention, and Fig. '8 is a fragmentary view of the crank showing it connected with the clutch, which drives the engine shaft, through the intermediary of an auxiliary shaft.

In the preferred construction of my improved starter, I employ a crank 10, comprising front and rear face-

plates

11 and 12, respectively, which are spaced apart by

flanges

13 and 13 at opposite edges, and secured together through bolt openings 14; or in any other desired manner. The flanges 13, as shownin Figs. 1 and 5, fall short of the lower ends of the

plates

11 and 12, leaving an open space therebetween for the receptionofa cam 15, rigidly fixed to a sleeve 16, the latter being journaled in the faceplates :and extended beyond the plate 1 2, where it is provided with a clutch end 17 which is adapted to engage with a cross-pin 18 passing transversely through a shaft 19, said shaft representing the driving shaft of the engine or other shaft connected thereto.

Slidably mounted in the crank 10 is a bolt 20, closely embraced and guided by the faceplates and flanges at both its upper and lower ends, and constructed with a beveled lower extremity 21, adapted to be projected into the path of a flattened face 22, formed on the cam 15, this construction adapting the cam to automatically force the bolt upwardly when impelled in one direction, the

cam being restrained from moving in the opposite direction with respect to the crank when in the position shown in Fig. 4, by a pin '23 best shown in Fig. 3, slidably mounted in a recess in-one face of the cam and normally pressed outwardly by a spring 24. This pin is adapted to be projected into a groove 25 formed in the face-plate 12 and having an inclined bottom for forcing the pin within the cam as the latter revolves in the direction indicated by the arrow in Fig. 5.

The upper ends of the

flanges

13 and 13 and the face-plate 11, are removed for receiving a roller 26 which is journaled on a spindle 27 connected to the face-plate 12, said spindle being extended beyond the roller and having journaled thereon a handie 28 for operating the crank. As shown in Fig. 1, the outer extremity of the spindle 27 receives lock-nuts 29, which are inclosed by a cap 30 carried by the handle 28. The abutting ends of the roller 26 and handle 28 are provided with a ratchet connection, consisting of spring-pressed pins 31 slidably mounted in equally spaced recesses in the roller 26 and normally forced outwardly therefrom by springs 32. The adjacent end of the handle 28 is formed with equally spaced wedgeshaped depressions '33 differlng in number by one from the pins '31, whereby a differential engagement between these two parts is obtained. This ratchet prevents any relative revolution between the handle and roller in one direction, but adm-its of their free independent revolutionin the opposite direction.

A latch 34 is carried by the upper end of the bolt 20, with which it has a limited pivotal movement from a vertical position in the direction of the flange 13, this pivotal movement being preferably effected by constructing the latch with an enlarged cylindrical head 35 revolubly mounted in a corresponding recess formed in the end of the bolt. The latch 34 is provided with a thumb-piece 36, which passes through the opening formed by the removed upper end of the fiange 13, said latch being pressed against an adjusting screw 37 by a flat spring 38, the screw 37 which passes through the flange 13 being so adjusted as to retain the latch when pressed by the spring, in substantially axial alinement with the bolt. By this construction it is apparent on adjusting the screw 37 the pressure required on the bolt 20 to release the latch may be varied. As best shown in Fig. 1, the bolt 20 is formed with a slot 39 in its outer face, which receives a lug 40 formed on the inner face of the plate 11, acting to limit the sliding movement of the bolt within the crank.

In Fig. 7 I have shown a modified form of my invention, in which the latch 34: is replaced by a link 3% which is pivotally connected to both the bolt 20 and the roller 26, the remaining construction being the same as that described and shown in Figs. 4 and 5.

Fig. 8 illustrates a slightly different manner of connecting the crank with the engine shaft clutch. In this form of my invention, the thimble 16 which is integral with the cam 15, is flush with both faces of the crank and receives an auxiliary shaft 16", the latter being connected to the cam and thimble in any suitable manner as by the pin shown and has rigidly fixed to its opposite end a clutch member 17.

In the operation of the crank for starting the engine, it is applied to the starting shaft as illustrated in Fig. 1. The handle 28 is then grasped and revolved to start the en gine, the roller 26 remaining stationary on the handle spindle by reason of the ratchet connection between the roller and handle, in the present case the direction of rotation being to the right. Should the engine backfire while the crank is being driven, the resistance ofiered by the roller 26 to the latch 34 will be overcome by the cam 15 acting on the bolt 20, and the latch will be thrown to one side by the revolution of the roller, the cam 15 at the same time operating to push the bolt 20 out of its path and thus permit the shaft 19 to revolve independently of the crank 10, in the direction of the arrow indicated in Fig. 5. The bolt 20 is again pushed back into the cam 15, by pressing on the thumb-piece 36 with the thumb of the hand used in grasping the handle 28. When the engine is started in the proper direction under the action of the crank, the crank is ejected from the starting shaft by the pin 18 operating on the spiral faces of the clutchend of the sleeve 16. It is thus seen that the crank is released from the engine when the latter is driven in either direction by its motive agent.

It is evident that the construction as hereinbefore described may be widely varied without departing from the spirit of my invention; and I consider that I am entitled to such modifications as fall within the scope of the annexed claims.

Having thus described my invention I claim as new and desire to secure by Letters Patent:

1. In a starting device for internal combustion engines, the combination of a crank provided with a handle and having means adapted to engage with a shaft in starting the engine, a bolt slidably mounted on the crank for looking it to said means, and means normally engaging the said handle adapted to automatically release the bolt from said first-named means when the resistance of the shaft to the crank reaches a predetermined point.

2. In a starting device for internal combustion engines, the combination of a crank, means carried by the crank adapted to engage with a shaft in starting the engine, a bolt slidable within the crank for locking said means, a handle for revolving the crank, and revoluble means carried by the handle cooperating with means carried by the bolt, for releasing the bolt from said first-named means when the resistance of the shaft to the crank reaches a predetermined point.

3. In a starting device for internal combustion engines, a crank, a clutch journaled in the crank, a cam carried by the clutch, a bolt slidably mounted on the crank adapted to be projected into the path of the cam, a handle for the crank, revoluble means carried by the handle, and means pivotally connected to the bolt cooperating with said revoluble means for locking the bolt in position.

4-. In a starting device for internal combustion engines, a crank having a handle adapted to revolve a shaft, and means for automatically releasing the crank from the shaft when the resistance of the shaft reaches a predetermined point, said means including a revoluble member having a ratchet connection with the handle.

5. In a starting device for internal combustion engines, a crank having a handle adapted to revolve a shaft, and means for automatically releasing the .crank from the shaft when the resistance of the shaft reaches a predetermined point, said means including a revoluble member having a differential ratchet connection with the handle.

6. A crank having means adapted to engage a shaft and revolve it in one direction, means including a pivoted latch for releasing the crank when the resistance of the shaft reaches a predetermined point, and means for adjusting said latch, whereby the crank will be released from the shaft at different resistances.

7. In a starting device for internal combustion engines, the combination of a crank having a handle, a sleeve j ournaled in the crank having a clutch face, a cam carried by the sleeve Within the crank, a bolt in the crank adapted to slide in the path of the cam, a revoluble member carried by the handle, and means carried by the bolt in normal engagement with the inner face of said member for locking the bolt in place.

8. In a starting device for internal combustion engines, the combination of a crank having a handle, means journaled in the crank adapted to engage and revolve a shaft, a cam carried by said means within the crank, a bolt in the crank slidable in the path of the cam for locking it against movement in one direction, means carried by the cam for locking it against movement in the opposite direction when engaged with said bolt, a revoluble member carried by the handle, and means carried by the bolt in engagement with said member for locking the bolt in place.

9. In a starting device for internal combustion engines, the combination of a crank having a handle revoluble thereon and adapted to revolve a shaft in starting the engine, means for automatically ejecting the crank from the shaft as the engine starts in one direction, and means dependent on the revolution of the handle on the crank for releasing the crank from the shaft when the engine starts in the opposite direction.

10. In a starting device for internal combustion engines, the combination of a crank having a handle revoluble thereon, a device on which the crank is journaled, means for preventing the relative rotation in one direction between said device and crank, whereby they are adapted to revolve a shaft in one direction in starting the engine, means dependent on the revolution of the handle on the crank for releasing the crank from said device when the engine starts in one direction, whereby the device and shaft may revolve independently of the crank, and means for ejecting the crank and device from the shaft when the engine starts in the opposite direction.

11. The combination of a device for engaging a shaft, a crank journaled on said device, a cam fixed to the device, a bolt carried by the crank adapted to be projected into the path of the cam and prevent rotation of the crank on the device in one direction, and independent means carried by the cam adapted to engage with the crank and prevent rotation thereof on the device in the opposite direction.

12. The combination of a sleeve, a crank journaled on the sleeve, a cam fixed to the sleeve having a flattened face, a bolt carried by the crank having a beveled extremity adapted to be projected into the path of the flattened face of the cam and prevent rotation of the crank on the sleeve in one direction, and means carried by the cam adapted to engage with the crank and prevent rotation thereof on the sleeve in the opposite direction.

13. The combination of a device for engaging a shaft, a crank journaled on the device having a groove provided with an inclined bottom, a cam fixed to the device having a spring-pressed pin adapted to engage said groove and prevent rotation of the crank on the device in one direction, and a bolt carried by the crank adapted to be projected into the path of the cam and prevent rotation of the crank on the device in the opposite direction.

14. The combination of a device for engaging a shaft, a crank journaled on the device, a cam fixed to the device, a bolt carried by the crank adapted to be projected into the path of the cam and prevent rotation of the crank on the device in one direction, independent means for preventing the rotation of the crank on said device in the opposite direction, and means for releasing the bolt and permitting the movement thereof from the path of the cam when the pressure on the bolt reaches a predetermined point.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

LOUIS S. TUTTLE.

Witnesses:

HENRY L. TELUER, RENssELAER B. DAYTON.