US1169595A - Gearing. - Google Patents

Description

.VI G. APPLE.

GEARING.

APPLICATION FILED FEB. 27, 1913.

Patented Jan. 25, 1916.

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muren sans CENT G. APPLE, OF DAYTON, OHIO, ASSIGNOR T0 .APPLE ELECTRIC ,COMPANY, O15' DAYTON. OHIO, A. CORPORATION' OF OHIO.

GEARLNG.

riginai application led October 2, 1911, Serial No. 652,381,

Specification of Letters Patent.

27, 1913. Serial No. 750,949.

To ZZ 107mm it may concer/t.'

Be it known that I, ViNCnN'r G. APPLE, a citizen of the United States,'residing at Dayton, in the county of Montgomery and State of Ohio, have invented certain new and useful Improvements in Gearing, of which the following is a speciiication.

My invention relates to improvements in gearing.

One of the objects of my invention is to provide a speed-reducing gearing, capable of transmitting power from a rapidly rotating part to a part to be rotated at a relatively slow speed with relatively small friction-loss. u Y

Another object ot my invention is to provide a device, of the character referred to, which contains fewl parts; which will occupy relatively small space; and which is practically noiseless in operation.

Other and further objects of my invention will become readily apparent to persons skilled in the art from a consideration of the specification whentaken in conjunction with the drawings, wherein- Figure 1 is a cross sectional View of my improved gearing taken on a plane at right angles to the axis of the main shaft, this being indicated in Fig. 2 as line 1-1. Fig. 2 is a cross section taken on line 2 2 of Fig. 1; and Fig. 3 is a cross section taken on line 3-3 of Fig. 2.

1n all the views the same reference characters are employed to indicate similar Darts.

My present invention is a division from application Serial No. (352,381, tiled October 2, 1911, regulator for dynamo electric machines, which application. was allowed November 9, 1912.

As in the former application I have shown my reducing gear, in -this application, applied to a dynamo electric machine wherein 5 is the casing or frame of the machine and G is a projecting armature shaft. A supplementary, gear-containim;1 casing is provided, which is composed of the parts 7 and 8 adapted to encompass the shaft 6, and is secured to the dynamo casing 5- by means of bolts 9-9, or otherwise. The shaft 6 is reduced, as at 10, and as at 11. The parts (i and 11 are concentric but the part 10 is eccentric, as shown in Figs. 1 and 3. The casing 7 is circular in form eXceptvfor the offset 12, wherein is contained a vertical shaft 13, upon which is fixed a worm wheel 14, as by a key 15. This shaft is shown broken off and is designed to be extended to any mechanism which is desired to be rotated at a relatively slow speed by the operation of the dynamo electric machine or motor. The shaft has bearings in the wall of the casing, as at 16, and a step bearing, as at 17. r1`he screws 2)*9, which are elnployed to secure the two parts of the casing together, may also be used for securing the casing to the casing of the dynamo electricA machine, or if desired the part 7, of the gear casing may be an integral part of the dynamo electric machine and the screws 9 may be employed solely for securing the part 8 in place with the part T of the casing.

A worm wheel, or annulus 18 is shown made in two parts, 19 and 20, the former annulusl being preferably made of brass and having a somewhat smaller bore tov provide a shoulder' between it and the preferably steel annulus 20. The latter is provided with internal gear teeth, as at Q1. The two parts are secured together by rivets .22 and both parts have upon their exterior periphery a continuous worm Q3 that has driving engagement` with the worm wheel 14. The composite wheel 1S lies snugly in a bore in the parts and 8 and is adapted to be rotated therein by mechanism now to be described.

lhe wheellS travels in a concentric path around the main portions of the shaft 6 and in its rotary motion it revolves a vertical, or tangentially disposed, shaft 13 by its worm and worm wheel engagement therewith. Lying inside of the steel internal gear wheel 18, and resting on the shoulder provided by the brass wheel part, by reason of its larger internal diameter' than the internal diameter of the part 19, is an exteriorly geared wheel 24, counterbored as at 25, and conccntrically perforated as at 26 to receive the eccentric 10 on the shaft 6.

Inside of the counterbore, and close to the interior surface of the wheel 24 lies a vspider or universal guide 27 'having two' relatively long arms '28 and 29 that lie in the notches 30 and 31 respectively provided in the flange of the wheel 24. Two relatively short arms 32 and 33 lie in notches provided between guide lugs 34 and 35 which project from the inner surface of the cover plate 8. Any suitable means, in lieu of the guide 27, may be employed for this purpose, which will permit roper 'vertical and horizontal movement ofp the wheel 24 without permitting its rotation. In the -exemplification shown such motion is imparted to the wheel 24 through the instrumentality of the eccentric 10 in conjunction with the universal guide 27 in a manner clearly understood from the drawing.-

The relative number of gear teeth in the internally geared member 18 and the externally geared member 24 governs the speed of the former` Withrelation to the speed of the shafty. In the exemplifcatio-n shown the outer gear` member 18 has one more-gear;

tooth than thefinner member 24 and there fore, after one'revolution of .the shaft, all of the spaces, except one, between the teeth of the outer wheel will have been filled by the teeth of the inner Wheel in successive order andthe outer'gear, which can be roi In4 the present exemplificati'on the speed of the dynamo, used as a motor, is say 2000 R. P. M. while the rotated vertical shaft is turned 1 R. P. M. which is a reduction of made from the exempliflcation which I have chosen for a clear disclosure of my invention without departing from the spirit of Amy invention and Within the scope of thc appended claim.

What I claim is:

A reduction vgearing comprising a rotatable shaft provided with an eccentric part; an internally gearedl annulus positioned for concentric rotation arornd the true axis of said shaft; an externally geared member overlying 'said eccentric part having some of its teeth intermeshing with the teeth of the overlying member, said members-having 'different numbers of teeth; means -to permit -free lateral and vertlcal movement of the inner geared member and to prevent rota tion thereof; a worm gear on the outer surace of said internally geared annulus and

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