US1084577A - Gearing. - Google Patents

Description

- E. A. HALBLEIB. V

GBARING. I APPLICATION F ILED IAN. 24, 1912. 1,084,577. Patented Jan. 13, 1914.

a 7 I g "4 v F 11g 01 l i 24 J 5.

l I I? 23 3 25 2 l8 l3 1 0 27 2/ I 6 i0 Z8 Y h 33 34 a;

- Hnnvmmkmr g snares a n eerie EDWARD A. HALBLEIB, 015 ROCHESTER, NEW YQRK, ASSIGNOR TO NORTH EAST ELECTRIC COMPANY, 01? ROCHESTER, NEW YQRK, A CORPORATION OF NEW nosaew.

Specification of Letters Patent.

enemas-1 Patented Jan. is, rare.

Application filed January 2%, 1912. Serial No. $723,271.

gearing operating automatically so as to produce different speed-ratios between. the elements, according as one or the other acts as thedriving element.

In a pending application filed November -6, 1911, SeriaLNo. 658,902, I have disclosed apparatus for starting internal-combustion engines, this apparatus comprising an electric device adapted to operate as a generator when actuated by power derived from theengine, and also adapted, when the en- T gine is at rest, to operate as a motor and apply power to the engine to start the latter. In suchan arrangement-it is necessary to introduce gearing between the elec-.

tric device and the engine so as to secure a considerable speedreduction when the -electrio device operates in the latter manner, in order that it may produce suflicient torque to rotate the crank-shaft of theengine. On' the other hand, when the engine is operating normally, at comparatively high speed, a much lower speed-ratio is required in order to actuate the electric device for generating purposes.

The present invention relates to a gearing which is particularly adapted for use in such a connection, but it will be apparent that the invention is applicable, in general, to purposes where the peculiar mode of operation in question is necessary.

The invention consists in a novel arrangement of speed-reducing gearing and onecurrence of reverse rotation in one of the rotary elements.

Other ob ects and features of the invention will be set forth in connection with thefollowing description of the illustrated embodiment of the invention.

In the accompanying drawings z- Figure 1 is a plan-view, partly in horizontal sec tion, of gearing embodying the present invention;'and Fig; 2 is a vertical section-on the line 22 in Fig. 1.

The illustrated embodiment of the invena tion is a mechanism in which the normal direction of rotation of the two rotary elements is always the same. For convenience or description these two elements will be hereinafter referred to as the primary ele- .ment. and the secondary element, al

though this designation is arbitrary in so far as any essential difference in their functions is concerned.

The primary element 4 is in the form of a short shaft journaled, ,at one end, in a ball-bearing 5 which is mounted in a casing 6 'inclosing portions of the gearing. The other end of the primary element'is journaled in a ball-bearing 7, which is carried by a shellor bracket 8 fixed to the casing 6. The secondary rotary element 9 is -also in the form of a short shaft, which is journaled, near one end, in a ball-bearing 10 mounted .in the ca'sing 6. The other end of the secondary element is journaled in a.

bearing 11 inciosed Within, and concentric with, the recessed end of the primary element at. The primaryand secondary ele-' ments-are thus coaxially rotatable.

The secondary element is provided with an enlarged portion 12 which constitutes the inner member of a one-direction clutch of well-lrnown form. This member 12 is provided with inclined recesses 13, in which are located spring-pressed rollers 14, and these rollers are in frictional engagement with a cylindrical surface 35 on an enlarged end or shell 15 which is integral with the primary element 4:, and which constitutes ment 9, so that the primary element drives t-hesecondary element directly, that is, without any difference in speed of rotation.

When/the secondary element 9 rotates in the same direction but operates as the driving member, however, the clutch just de scribed is idle, as the rollers 14 move to the deeper parts of the recesses 13 so as to drag scribed, constitutes also the inner clutch- ;member of a second one-direction clutch connecting the primary element 4: with the gear 17. To this end the member 15 is provided with peripheral inclined. recesses and spring-pressed rollers 19, and these rollers engage a cylindrical surface 18 on the gear 17, the inner part of this gear thus constituting the outer member of the sec- I, 0nd clutch;

The pinion 16 and gear 17 are connected by speed-reducing gearing comprising a gear 21 and a pinion'22 which are connected together and rotate freely about a countershaft 23 fixed in the casin cordingly, when the secondary e ement 9 constitutes the driving-element and rotates in the same direction as before, and as in.- dicated by arrows in the figures, the pinion 16 rotates the gear 21, the latter rotates the pinion 22, and the pinion rotates the gear 17. The one-direction clutch last described then operates to cause the member 15 and the primary element 4 to rotate in the same direction as the secondary element, but at a substantially lower speed.

The gearing is illustrated as arranged for use in connection with an electric device and an engine, as above described. For this purpose a sprocket-Wheel 24 is keyed to the primary element 4, and this may be connected, by a suitable chain, with a sprocket- Wheel on the engine-shaft. The secondary element- 9 is connected, by a coupling 25, with an electric device indicated at 26 in Fig. 1. v

When the gearing is used for the urpose just referred to. there is danger, un er certain circumstances, that a reverse rotation may be produced. in the primary element 4, owing to a back-kick or reverse rotation in the engine-shaft. Upon the -rzurrence of such reverse rota-tion the inner member of the outer clutch will-act to drive the outer member and the gear 17, and the latter, through the pinion 22, the gear 21. and

the pinion 16, will tend to rotate the secondary element 9 at a higher sperd than springs 39 surrounding these posts.

end of each spring engages the frictionas .the'member 3.2. Accordingly, the gearing will act to lock itself against such reverse rotation. As this locking action, if positive,

might result in in ury to the gearing, I have made provision for a yielding action within the gearing, by employing a frictional slipconnection in the speed-reducing gearing. To this end the rim of'the gear 21 is not fixed to the web 27 of the gear,-but is provided with a conical inner surface which is in frictional engagement with a frictionplate 28 having a conical rim. This plate is fixed to rotate with the web 27, by means of posts 29 projecting from thelatter through openings in the plate, andthe frictional engagement is yieldingly maintained bby plate, and the other end is seated against a flange 31 loosely surrounding the hub 32 of the gear, the flange being held in place thereon by a nut 34 threaded on the end of a sleeve 33. which projects integrally from the pinion-22. In'case of reverse movement, as above described, the rim of the gear 21 can rotate with:respec t to the'web 27 and the friction-plate, and the resistance to such rotation is so adjusted that injury to the gearing isprevented while at the same time the operation .of the gearing is sufficiently positive during normal operation.

My invention is not limited to the embodiment thereof hereinbefore described and illustrated in the accompanying drawings, but may be embodied in various forms within the nature of the invention as it is defined in the following claims.

I claim 1. Gearing having, in combination, a primary rotary element and a seconda rotary element coaxially journaled, a oneirect-ion clutch comprising an inner member on one element and an outer member on the other element, whereby the primary element may actuate the secondary element, and connec tions between said elements whereby the secondary element may actuate the primary element at a different speed-ratio, said connections comprising a gear rotatable about said outer clutch-member, a one-direction clutch connecting said gear and clutch-mem-, her, a pinion rotatable with .the secondary element, and gears-connecting said gear and pinion.

2. Gearing having, in combination, a primary rotary element, a secondary rotary element, a one-direction clutch for connecting said elements to permit the primary elementto actuate the secondary element, and connections between said elements to permit the secondary element to actuate the primary element, said connections including speedreducing gears, a second oneirection clutch, and a yielding device to permit the primary and secondary element to rotate in unison in a reverse direction.

3. Gearing having, in combination, a primary rotary element rovided, at one end, with a shell constituting the outerimember of alone-direction clutch and the inner memberof a second one-direction clutch, a secondary rotary element journaled coaxially with the primary rotary element and provided with a clutch-member located within a said shell and const-itutin the inner member of said clutch, whereby t e primary element may rotate the secondary element without speed reduction in a given direction of rotation, said shell constituting also the inner member of a second one-direction clutch, a

ring surrounding said shell and constituting both a gear and an outer member for sai second clutch a pinion engaging said gear .and journale on an axis parallel with the axis of said rotary elements, a gear rotatably connected with said pinion, and a pinion rotatable with the secondary element and meshing with said gear, said second onedirection clutch being adapted to rotate the primary element in the given direction by power derived, through the speed-reducing gearing, from the secondary element.

4. Gearing having, in comblnation, a primary rotary element and a secondary rotary element coaxially journaled, .a one-direction clutch comprising an inner member on one element and an outer member on the axis of said rotary elements, a pinion jour- 'naled upon the countershaft and meshing with said gear, ,a gear also journaled upon the countershatt and meshing with the pinion rotatable with the secondary element, and frictional connections between the gear and pinion on said countershaft, said connections being adapted to transmit power between said gear and pinion during operation of the gearin in the normal direction but to yield when t 1e primary and secondary element tend to rotate in unison in a reverse direction. v

EDWARD A. HALBLEIB.

Witnesses: D. GURNEE,

, FARNUM F. DORSEY.

Images