US1387480A - Spring-motor - Google Patents

Description

W. R. EVERETT.

SPIUNG MOTOR. APPLICATION FILED JUNE 21, 1918.

13 87,480. PatntedAug. 16,1921.

2 SHEETS-SHEET 1' W. R. EVERETT.

SPRING MOTOR.

.APPLICATION EJLED JUNE 21. ms.

Patented Aug. 16, 19.21.

' 2 SHEETS-SHEET 2- wMWW @vvj r w UN TE TAT E PATENT w;[;r .I,IA vi R. E ERETT, or BENTON HARBOR, MIo HrGAN, AssIGivoR, Brunswic To all whom it may com em:-

- Be it known tha tI, WILLIAM a citizen of the United States, residing at Benton Harbor, in the county of Berrien 5 and State of Michigan, have invented a certors which develop power from aspring or from a plurality of springs and moreparticularly to spring motors designed for the operation of phonographsand the like.

y object is to. produce a construction that will develop the maximum of power with the minimum "of friction, theminimum of noise and'the minimum be hereinafter explained, r Motors for thispurpose with which I am arrangement is dueto the necessity for-obtaining ahigh'er gearing ratio forthe governor drive than =would be practical to obtain from thei'means'of driving the'turntable shaft, as such motors are commonly designed. With this constructiomany varying or irregular motion or speed of the governor is transmitted directly to thelturntable and thus seriously affects the toneproqduction. r l Inmyconstruction-I provide an intermediate shaft placed at an angle both to the spring shaft and to the governor-shaft; This. intermediate shaft is driven bythe spring box gear and in turn drives, not only the turntable shaft, but also thefigovernor shaft. H By this construction it will be apparent .that'the governor shaft, turntable shaft and spring=box gear ;:are, in effect locked together byreason of theirirespective 5 gears-being inxmesh with-zgearsion the intermediate shaft. It follows, therefore, that no change of speed inthe governorflcanqafiect :any single pair of gears without affecting all pairs. vThe resultxis, that eachpair of gears acts to stabilizeor' to prevent anyirregular motion of any of the other pairs, whichresults in a much more even rotation of thehturntable. g

' Governors for phonograohsfareialmost universally placed with theirshafts hori- "zontal. They areso arranged becauseof the desirability of driving the governor with Specification ofjiiiette r s Patent. i Patented A Application filed June '27, 191s. Serial No, 242,160.

ends into position :the ends become of trouble, as'will v the undue wear and noise resultingfrom the familiar provide for'the driving of the gov ernor shaft from-theiturntableshaft. -i' This turntable shaft, because which makes it practical Bing of suflicient ratios .scruction,-u1e; thrust G. HOGLAISTID, or nocxronn, ILLINOIS. i sPRINeo'roRJ helical gearing With such construction, however, the force of gravity tendsto unbalance the governor by causing the weights to move trio with the {axis of rotation. This condition results in vibration which is communicated to the gears, creating noise andwear out of atrue circular path concenand results, furthermore, in developing an irregular motionof the turntable.

are secured to flat springs. The constant to loosen the means employedto fastenthe loose the governor becomes very noisy. w In addltlonto these objectionable features,

Ordinarily the weights of the governorwith-the result-that as aforesaid causes is accentuated if the springs are of unequalweight and stiffness. If the rs'prings-iare not all of equal tension then the unfavorab e conditions which tend to in-v crease the noise aggravated.

In my improved form of constructiom-I iemploy in vertical shaft for the governor and the Weights are connected 'tolinksin Under this conlstruction, the weights will all 'tendtoswing n a true circleand to rotate the governor shaft about itsaxis free from any tendency to make it wabbleor set up an undulatory place of the usual springs.

motion; Iam able to revolve the governor around a vertical ZLXlS,:-

termediate shaft creates a new condition d} ry th Speed, are,

independent of the 7 the slant of my'f into use helicalgear- Furthermore, my construction," the thrustof the gearing, gravityand thepres-t suregof the brake can be all in 'one direction opposingthe lift of the, governor weights,

Whereas h l l' ihOrizQntal a is Con,

pQsedito the brakepressure, and the fo ce" of gravity and the centrifugal force'are exerted in a different direction, 5 g V In this latter construction it is; found,

one and then another becomes preponderant and the result is-undueawear onthebearings and objectionable noise'.

of the gearing is -opoperation theseforces do not equalize; first having reference .to the accompanying drawings which are hereunto annexed and are a part of this specification, in which:

Figure 1 is a vertical side elevation of my improved device. 1 r Fig. 2 is a top or plan view of the same,

Fig. 3 is a fragmentary detail view having part of the frame broken away to show the intermediate driving shaft being. suitably journaled in a frame 9 in the usual manner. The outer end of the spr ng is, of course, secured to the gear 8 in the usual'manner. An intermediate shaft 10 ismounted in suitable journals 11 and 12, cast or formed on the frame 9. The intermediate shaft 10 is set at an angle to the turntable shaft and also .diverges at an angle from the axis ofthe winding shaft. r

A spiral pinion 13 is secured to the intermediate shaft 10 in position to mesh with the teeth of the spring box driving gear 8. The turntable shaft 14 is suitably journaled in the top wall 15 and bottom wall 16 of the frame 9, and is provided with a spiral 131111011 17,

shaft 10.- The governor shaft 19, which, as

is apparent from the drawings, is vertical,

and parallel to the turntable shaft 14;, is suitably journaled in the walls-l5 and 16. of the frame 9. a It is provided with a spiral pinion 20 which meshes with the spiral gear 21 carried by the intermediate shaft 10. From this description, it is apparent that the governo r shaft 19, turntable 1 1, and spring box driving 8, are ,all looked together through the medium of the respective gears secured to the intermediate shaft 10. j

The governor is of the usual centrifugal ball type and consists of a plurality of weights 22, which are connected to links 23 which are pivoted at one end to a collar 24: andxat the other end to the hub. 25, of a'disk 26-which obviously is carried upward upon the shaft 19 when the speed of said shaft is increased, causing the weights 22 to swing outwardly.

T A brake of the usual construction is provided and comprises a; bell crank lever 27 which is mounted upon a pin or pivot 28and is provided with a contact 29 made of'felt or any other suitable material. When the upthe teeth of which mesh with the spiralgear 18 fixedly attached to, theintermedlate' per end of the lever 27 is swung on itspivot 28, it is obvious that the contact 29 will be further increase in speed.

4 Th s construction results 1n a very effi-fl cient and practlcally noiseless motor and 1s entirelyimmune'from the troubles resulting from the use of the usual spring vgovernor set horizontally. i i

Although I have described a specific form of construction, it is understood this is merelyfor the purpose of illustrating the preferred embodiment, as various changes in details may be employed in practice, and I do not desire to be limited to the specific details, except as such limitations shall appear in the hereinaftercontained claims.

l'laving described my invention, what 1 regardasnnew and desire to secure by Letters Patent,1iszl I I i 1. The combination with a frame of a winding shaft, a plurality of coil springs mounted thereon, l/f spur gear mounted on said 1 shaft and suitably connected to said "springs, a vertical turntable shaft, an intermediate shaft suitably journaled in said frame, and inclined from the axis of the turntablesh'aftland also. diverging from the axis of. the spring shaft, a spiral gear on said intermediateshaft driven by said spur gear, avertical turntableshaft, a spiral pinion on the turntable shaft, a

spiral gear on the intermediate shaft which meshes therewith, a vertical governor shaft,

- The combination with a springmotor having a frame, winding shaft, and springs,

'a driving; gear operated by said coil spring, an lntermediate shaft'set atan angle to the winding shaft in both the horizontal and vertical plane, a: vertical turntable shaft, and a vertical governorshaft, :spiralLgears on .saidintermediate shaftiin mesh with spiral .pinions. on said turntable and governor shafts, arspiral pinionon said intermediate shaft which meshes withthe spring driving gear,a ball: governor on said governor shaft,

and means to hold said shaft against-rotat-ion, said means being adapted to. check its rotation above a predetermined rate of speed;

The" combination with a frame, of a winding shaft, a co l spring, auspur gear mounted on said shaft, one end of. said spring being secured to said gear, an intermediate shaft suitablyjournaled in said frame, andinclined fromthe horizontal and also, diverging at an angle from the axis of the spring shaft, a spiral gear on said inter mediateshaft driven by said spur gear, a

vertical turntable shaft, "a spiral, pinion thereon, a spiral gear. on the intermediate shaft which meshes therewith, a vertical governor shaft, a spiral pinion thereon, a spiral bearings for said shaft, a vertical governor,

a turntable, a shaft crossing the governor and turntable shafts diagonally and meshing therewith, and actuated by thespring j foregoing specification.

box driving gears to rotate both'the turntable andthe governor, means to hold said governor against rotation and means adapt-.

ed to prevent the rotationof the governor" above a predetermined rate of speed.

5. The combinationwith a spring motor for phonographs having 'a Winding shaft, driving springs, and spring driving gears mounted on said shaft, of a frame for said mechanism, bearings forsaid governor shaft,- aturntable, a shaft whi'ch carries said turn table, afs'haft which crosses the turntable shaft diagonally, gears mounted on said anogular shaft, actuated by the spring'driving 1 Y gears, which rotate said shaft and gears mounted on said angular shaft to rotate the turntable,v and governor shafts, said .gears serving to look said shaft and spring driving gears together and means to prevent the retation ofthej governor shaft abovej a predetermined rate of speed.

In testimony whereof I have signed the WILLIAM R. EVERETT.

Images