US986588A - Speed-reducer for power-generators. - Google Patents

Description

J. G. OKELLY.

SPEED REDUGER FOR POWER GENERATORS.

APPLICATION FILED SEPT. 16, 190:].

Patented Mar. 14, 1911.

'2 SHEETS-SHEET 1.

J. G. OKELLY.

SPEED REDUOER FOR POWER GENERATORS.

APPLIUATION FILED 511213.16, 1907.

986,588, Patented Mar. 14, 1911.

2 SHEETS-SHBET 2.

JOSEPH G. OKELLY, OF CHICAGO, ILLINOIS.

SPEED-REDUCER ron rownnrennnna'rons.

Specification of Letters ratent.

Patented Mar. 14, 1911.

Application filed September 16, 1907. Serial No. 393,171.

To all whom it may concern:

Be it known that I, JOSEPH a citizen of the United States, and a resident of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Speed-Reducers for Power-Generators, of which the following is a full, clear, and exact description.

My invention relates to speed reducing and power increasing devices constructed according to Letters Patent of the United States, granted to me June 27, 1905, for speed reducing device for motors and dynamos, No. 793,218.

The object of my invention is to adapt such a reducer, of a given size, by the introduction of comparatively slight changes in its internal construction, for use in reducing the Speed of'power generators of different horse-powers, and thus greatly economize the cost of making the same, by avoiding the necessity of building anew a different sized speed reducer each time a reducer for a generator of difierent power is wanted; and a further ob ect is to permit of the use of a speed reducer no matter in'what posi{ tion it is placed, or whether its axis is horizontal or vertical. This I accomplish by the means hereinafter fully described and as particularly pointed out in the claims.

In the draw1ngs:-Figure 1 is a longitudinal central section of my improved speed reducer. Fig. 2 is a transverse section taken on dotted line 2, 2, Fig. 1. Fig. 3 is a transverse section of a full sized idler journaling stud. Fig. 4 is a longitudinal section thereof. Fig. 5 is a detail view of the key used in connection with said stud, and Fig. 6 is a detail .view showing in perspective the bush ing for'the bearings of the gear having external teeth and located within the casing of the reducer.

The combination of mechanical elements comprised in my invention is the same as that embodied in the construction of the speed reducer shown inythe aforesaid Letters Patent, but the construction of some of these elements is different so as to permit of the introduction of an element of the particular size desired, and is also different in some minor respects so as to prevent the lateral contact, wear and friction thereof no matter in what position the reducer is placed.

My improved speed reducer comprises a G. OKELLY,

bell-shaped case A, the reduced part or boss a of which provides bearings for the elongated cylindrical boss or hub b of the circular plate B located within the case. The

case A may, if desired, have laterally projeeting basal flanges for supporting it, as shown in Fig. 2 of the drawings, although any other means may be employed for supporting the same in any position it is desired to place it.

The hub of the plate B is secured to the end of the driven shaft G and revolves therewith, and the inner surface of the boss at of the case is provided with a bushing c, which has its annular edge next plate B flanged outward circumferentially to separate the said plate B from the adjacent end wall of the case. A circular packing ring 0 is secured, by means of suitable screws, as shown, to the outer circular edge of said boss on and has its inner circumferential flanged portion entering between the circumference of the hub 7) and boss a, and confines suitable packing material between it and the adjacent end of bushing 0, serving as a glandnut to confine and prevent the escape of the lubricant employed in connection with the machine. Shaft C terminates at a point a little more than half way into the hub 'b, and a reduced extension D of the driving shaft E, (whose axis aline's with said shaft has its adjacent end extended into hub 72 and opposes the end of said shaft C. If desired, an independent pilot-shaft may be employed instead of extension D, whose ends would be journaled in suitable sockets in the ends of shafts C and E. The drive shaft E extends out through suitable hearings in the boss f of the head F closing the mouth of case A, substantially as shown in Fig. 1 of the drawings. Bushing d, similar in construction to bushing c, is interposed between the inner circumference of the boss f and the journal of shaft E, and has its inner end flanged outward to separate the kinggear G (mounted on the inner end of shaft E) from the inner surface of head F. The

outer end of the boss 7 is also closed by a ring 01, that is L-shaped in cross-section and is otherwise constructed and secured in place by screws similar to therings c, hereinbefore alluded to.

The bore of the portion of the hub 12 of plate B into which the extension D enters, is increased in diameter, and is provided with a bushing g which, preferably, extends from the end of shaft beyond the opposite face of plate B where it is flanged outward to separate the face of said plate from the adjacent endof a king-gear H, which latter has its' boss or hub extended longitudinally in a direction away from plate B. The bore of king-gear H has a bushing h interposed between it and extension D, and its endfarthest from plate B, is flanged outward to separate the adjacent end of the boss of said gear, and the other king-gear G.

From the'foregoing description it will be seen that, no matter in what position the speed reducer is placed, there will be no grinding orfriction' between thead aoent surfaces ofthe'parts of said reducer'revolving concentric'to the shafts O and E and extension D thereof.

Plate B is provided with a series of equidistant bearing-studs e, which are preferably three in number, and are located 'at equal distances apart from the center of extension D The projecting portions of these studs have idle-gears J journaled thereon, that mesh with and engage'the king-gear H, and diametrically opposite thereto engage with the internal gear K. The internal gear is not made integral w1th case A, but consists of a separate metalring or. annulus whose outer circumference eorresponds with the inner'circumference of the case in the transverse plane of the k1nggear H and idlers J, and'it is, preferably, secured in place by. radially disposed setscrews j, tapped in the same from the out.- side, although it can be'jsecured to the case by brazing or otherwise. Plate I, which s secured to and rotatable with the king-gear H, is also provided with a series of equldistant bearing-studs is, projecting therefrom in a direction opposite to idlers J, the axes of which latter are all the same distance from the center. of the shaft E. There are. preferably, three of these studs, and each has an idle-pinion m journaled thereon, which engages king-gear G on one side, and an internal-gear M at a'point diametrically opposite. The internal gear M consists of a metallic ring,similar to internal gear K.. and is secured to the inner circumference ofthe bell of the case A, nextits mouth or open end, by set-screws O, that are passed through suitable apertures in the head F and are each tapped into an opening made partly in the inner circumference of case A and the outer circumference. of said ring. This manner of securing. said internal gear in position is both simple and effective, and accomplishesa considerable saving of labor 'in' assembling the 'parts'of the speed reducer.

- I prefer to so construct studs 6 and k, that their shanks ca'nbe removably inserted and secured in suitable openings made for'their reception in plates B and I. Iaccomplish this result by'making saidstuds tubular, and

- for about one half studs secured at right angles to each other, whose intersection coincides with the axis ofthe stud.

These slits extend from one end of the stud of its length, and produce four branches 0, 0. The bore of the portion ofthe stud in \which said slits are made is, preferably, slightly conical, substantially as shown in Fig. 4, and when the slitted end of the stud is properly inserted in its opening in either plate Ior plate B, and a slightly tapered key R, substantially as shown in Fig. 5 of the drawings, is inserted and driven into the same, small end foremost, the stud is spread within said opening and is thereby securely held in place.

Between the bore of theidle-pinions J and m, and the circumference of the studs e and is, on which they are mounted, I interpose bushings, that consist of two substantially corresponding metallic sleeves r, s, the outer ends of which are flanged circumferentially rying said studs and idlers, and between the head F and idlers m. The length of these bushings is such that theirinner ends terminate in a transverse plane corresponding to abput the center of thickness of said idler's. v

All of the bushings, to which I have herei'nbefore referred, are made of brass or phosphorous bronze,or some other suitable metal for reducing the friction, and their presence in the construction of the speed reducer not only prevents friction between the parts of the same, but prevents any movement thereof in the directionof the length of the shafts C and E, together with the consequent rattle and noise.

What I claim as new is 2- 1. A speed reducer comprising a suitable ease, alining driving and driven shafts, gearing and gear-carrying plates, a plurality of to and projecting from said plates parallel to said shafts the bores of.

said studs being open and tapered at one end, idle gears loosely journaled on said,

studs, and internal gears engaged by said idle gears, and consisting of metal rings removably secured to the interior of said case, and one of which is secured in place next the mouth of said, case by screws extending through'the adjacent head of the same into openings made partly, in said ring and partly in the inner circumference of the case.

2. A speed-reducer comprising a suitable case, alining driving and driven shafts, gearing and gear-carrying plates, a plurality of hollow studs secured to and projecting from said plates,'-' the bore of said studs being smooth and extending throughout the same and having a tapered portion at one end, and provided'with slots extending longitudinally throughout said tapered ortion, keys fitting the tapered ends of the ores of so as to come between the plate carsaid studs, idle-gears journaled on. said studs, and internal gears engaged by said idle-gears.

3. A speed-reducer comprising a suitable case, alining driving and driven shafts, gearing and gear-carrying plates, a plurality of hollow studs secured to and projecting from said plates the bore of said studs being smooth and extendingentirely through the same and having a tapered portion at one end, and provided with slots extending 1ongitudinally throughout said tapered portion,

said idle-gears.

wedge-shaped keys having smooth exterior surfaces driven into the tapered endsof the bores of said studs, idle-gears journaled on 15 said studs, and internal gears engaged by In testimony whereof I have hereunto set my hand and seal this 14th day of August, A. D., 1907.

JOSEPH G. OKELLY. [L. s.] Witnesses: g

E. K. LUNDY, FRANK D. Tnoismson.

Images