US1413292A - Winch - Google Patents

Description

E. P. BAUSCHER.

wmc'n.

APPLICATION .FILED MAR. 9. 192].

Patented Apr. 18, 1922.

2 SHEETS-SHEET I.

E. P. 'RAUSCHER- WINCH.

APPLICATION FILED man. s. 1921.

ENE-n- //V VENT 0R To all whom it may condom:

' the following is a" specification.

. 7 My invention relates to improvements 1n 10 Winch capable of being driven fronra con- 4 ofthe United Statesfhaveinvented .or'disi' sa STA? "res was?

EDWARD; RAUsoHER; or riarsB ReH, PENNSYLVANIA.

f appncatioafiiana h 9,"

Be it known that'I, EDWARD P. RAUSCHER,

residing at Pittsburgh, in the" county of Alleghe'ny'and State; of Pennsylvania, a citizen covered certain new and useful 7 Improvepower-driven winches, and "consists" in a stant source of power'at one or another of several rates of rotation and inwhich "agrading of the rate ofrotationfmay underthe control or the operatorbs had, from zero to the predetermined limits of higher and lower'speed.w f 'A g f I a The inventiony though not so limited in applicability, I have found usefulgin ma chines for mining coal. The. function of a coal. mining machine isto out a scarf into the breast of. coal in the room of a coal mine. 7

In the performance'of its w'orkthe machine (which .is necessarily heavy) I has to be dragged from the truck which carries it through the mine passages to cutting position, against the breast of coaL-and then be dragged back again; and, in addition tothat, the machine' has to be advanced across hithertoithas been the "usual practice to cut or scarf. These movementsof the machine itself, Different speeds of windl'ass the breast ofco'al, inorder toqdevelop the chine about .within the room of the mine the walls of the me e pulling strainsare exerted upon these cables or chains to move 'the machine about by means ofpower-driven winches or windlasses,niountedon the marotatio n are required, in order properly to effect these various movements ofthe machine bodily 1n the room of the m ne; and

providetwo Winches at least,-.o'ne fo'r a highto be described,

"cent drum 4 isa collar or bolted thereto) 7 "extends collar-like around shaft l (though constitute" a cage.

.wrivcn.

= *sbeei e ti raml Pa tentedApr. 183922.

1 92 1. Serial no, 451,009.

ofcertain pinions which enter into the strifeture, as; presently will be explained and Fig": l P from below of a certain wedge ring which forms part of thelc structure; '1 l 7 I U The axle of the. winch. 1,

ments in WVinchesyoif whichfimprovements is suitably 3 position on thedeck'Q'lofBa mnnng machine.

from a suitable source of itself.

concentrically mounted With shaft is the rotatable'dn1m 4, the actual cableaen ga glng (or chain-engaging) .memberj "Ro: M tation'from shaft 1 is imparted todrum 4 I through the instmmentalitieswhieh remain l l f Keyed to shaft. 1" and conveniently adj a-' V platefiyand, 'integrally assembled with is a second plate 6 which also at an intervaltherefrom') and extends par- 'allel' 'witli plate 5 and standsseparated'from M g g Itfiwill be under- 7 stoodthat shaft .1, and plates 5 and firotate 5 all times as a unit; i j The plates 5 and 6v with" their spacing bolts In this cage is journalleda pinion/7 conveniently, and as shown-in Figurefl ofthe, drawings. this pinion 7;-. 1 turns upon one of the spacing boltsfa's an"" axle.- Rre ferably ,there is afvplurality offs'uch'pinions; in the machine illustrated I V elilploylthree'suchpinions', arranged at-in-19'5 l f, 120 apart, around the axis'yof. 'shaft 1; f Whgn a plurality ol pinions. is'

, cf-mployed theylnecessarily,as presently; will plate 5 at "an interval.

appear are not identical in form Figs;;III.

QFFECE.

u It is further provided 65: -W1thmeans for rotation, here'show'n tojbe. a v gear 3', mounted rigidly uponit, 'Wh'ichpin- 11011 3 itwill be understood maybe rotated Y 7 jpower ordinarily an electric motor also-carried bythe machine 70 plate a by'being' so being moved from the truck-to cutting posispeed dragging ofthe machine (as when it is and 1V; illustrate the variation "in this r'e-gs .00v I gard. the finside that isto say, on the]; sidetoivardthe axis vof shaft El -the teeth e of these pinions are free,and,the parts'which in the assembl ar'e situated inside the. pinrecessed-,to permit tion'), and the other for, a low-speed dragging (as Whencutting isin progress); Myinvention, as is already intimated, makes it possible to dispense with one Win'ch,'and to do all therequisite work'withthe other.

y The Winch is illi'lstratedjinthe accompanyingdrawings Fig. I is a view in longitudinal (and, in the case ofthe mining ma- 7 chine, vertical) section through the Winch; Fi IIis a plan (from above) Figs; III l andIV are VIGWS lII plan, and'axial section ions may i f necessary be free turning of the pinions. The bolting together of plates 5 A and 6m'ay be efifeetedinithe intervalsibetween ions7.

On the outside'-that is,the side remotell-o fromthe 'axis of shaft-- rotation, are a rranged twd'internally toothed gear'whe'els,

8 and 9, with which the teeth of pinions 7 mesh.- The two gear wheels 8 and 9 differ one from the other inthe number of teeth with which they are provided. In this instance gear 8 is provided with 10 teeth and gear 9 with 41. These two gears, in order that they may be engaged both of them by a single pinion, are necessarily equal in diameter; since each, separately considered, is engaged by a pinion of a certain size having a predetermined number of teeth, the factors are present which would ordinarily require that the gear wheels 8 and 9 be provided with a certain number of teeth-no more, no less. And this ideal 7 number would necessarily be the same for both wheels. In order, however, to effect the ends in view, I here departfrom the minute principles of gear construction and adopt a compromise. I so proportion the parts thatin this instance, for example the diametral pitch for gear wheels 8 and 9 is 47 (the diameter of wheels 8 and 9 be it parenthetically remarked is 10 inches) but instead of cutting the teeth to this diametral pitch exactly, I cut the teeth on wheel 8 to a pitch of 4 (which gives teeth), and the teeth on wheel 9 to a pitch 0154- (which gives 41 teeth). Inasmuch, then, as the gear wheels 8 and9 depart in this matter of proportion from theoretical correctness, they are what the theoretical engineer terms bastard gears.

, It will of course be understood that gear wheels 8 and 9 might be made unequal in diameter and pinion 7 be made a compound pinion, to engage both. But this would be merely a superadded complication, and if only for simplicity I have shown wheels of equal diameter and a pinion of uniform dlameter throughout. If the variant suggested were adopted, still it would be necessary to make modification and arbitrarily change and make unequal the ratio between pinion and gear wheels in order to achieve. .my inventlon.

Turning to Figs. III and IV it will be observed that the teeth of the pinion shown in Fig. III are continuous from end to end, whereas in the pinion of Fig. IV there is discontinuity mid-way the length of the pinion and the teeth are off-set. The reason for this is now apparent; it lies in the unequal number of teeth borne by gears 8 and 9. As has been said, in this particular winch three pinions 7 are employed the number is theoretically unimportant). One

of these (the one shown in Fig. IILand the one shown in assembly in Fig. I) is a normal pinion. It is inserted at the point in the circumference where the teeth of the two gear wheels 8 and 9 stand opposite, in alignment. The other two pinions are remote from the onejust mentionedat equal angular distances of 120.". Since number of teeth gear 9 exceeds gear 8 by one, the

displacement of opposite gears at the points where these other two pinions stand is one gear wheel 9 are formed out of line with the teeth to engage gear wheel 8, being displaced to the right one third the tooth in terval; while with the other of these two pinions the displacement. is one third the tooth interval to the left. Ofcourse, the practical way to make these discontinuous pinions'of Fig. IV is to out such a pinion as Fig..'III shows in two, and put the-parts together again withproper displacement.

If the number of pinions 7 were varied and their spacing about shaft 1 changed the degree of displacement of the teeth (of. Fig. III) would be correspondingly altered. Gear wheel 8 is borne by a member which I call a feed drum 10 gear wheel 9 is borne by drum 4. i

Feed drum 10 is mounted upon a bushing which encircles shaft 1, so that there is no direct connection between the two parts, but shaft 1 may turn within the sleeve-like hub of the drum. Feed drum 10 is shiftable longitudinally of shaft 1, and may be shifted, as by a wedge device, against the tension of a spring 11, into more or less completely binding engagement, hub to hub, with plate 5-which, as has been said, is assembled integrally with shaft 1.

The wedge device alluded to, for shifting Collar 13 is movable longitudinally of shaft' 1, but is held against rotation by means of an arm 16 extending from .it, which arm is pinned to a standard 17 erected on deck 2 of the machine. The pin is sufficiently long x to permit of the play indicated. ,Collar 12 may be rotated upon shaft 1 as a pivot, by means of a hand lever 15. In order to vary the effective throw of collar 12, ring 1 1 is adjustable upon shaft 1. It is a split ring with a bolt for clamping it securely in whatever position it may be; and, furthermore, it is screw-threaded to the shaft, to the end that, when the clamping bolt is loosened, it may be moved longitudinally of the shaft. hen properly placed the ring is bolted securely. This construction affords delicacy of adjustment, and the possibility of compensation for wear.

A wedge ring 18 (with recesses 18 as shown, to afford clearance for the trunnions of pinions vis interposed between the flange-like web of feed drum 10and plate 6.

1. his wedge ring 18, as will-be seen on comparing Figs. I and V, s in cross section wedge shaped; the ad acent bearing surfaces of plate 6 am. of feed drum 10 arecorre 1O and'shaftl may turn as a unit.

spondingly shaped, to the end thatas'downward thrust isimposed'upon feed drum-10,v

frictional engagement of feed drum lO with surfaces of'contact between feed drum 10 and parts'borne rigidly by shaft lai'eextended, to make more effective the frictional engagement, that, with reasonable application of power'on hand lever 15, feed" drum The outerperiphery offeed druinlO is so formed as to be engaged by a brake band 19, and this brake band 19 may be tightened and loosened by a manually turned screw 20. This braking surface of feed drum 10 is conveniently the external cylindrical surface of gear wheel 8. I The rope drum 4: also may be provided with a brake, conveniently in the form of a--- band 21 which may be constricted on the exterior of gear-wheel 9-. The brake bands 19 and 21 may be supported from deck 2', as the drawings indicate;

Coming now to the 'oper'ation'of parts, it will be understood that shaft 1 normally is in constant rotation. Collar 12 being in re- 1 tra'cted position and brake bands 19an'd 21 being slack, the winch is inactive: Plates 5 and 6 are rotating with shaft 1, and they are carrying pinicns 7 around-1n planetary orbit;'pinion's 7 are in constant engagement with gear wheels 8 and 9, and the rotation of shaft 1 expresses itself in the idle rotation of 3 one or all of pinions 7, feed drum 10 and rope drum 4. If under these conditions any drag [be exerted ondrum 4, it will simply cease turning if it had theretofore been turning at all-and pinions? and feed drum 10 will turn idly at an altered rate; but no winding pull can now be. exerted by the winch.

If rope drum 1 is to be turned at slow speed, brake band'19' is tightened on the face of feed drum 10; Feed drum 10 isheld se-' cure against rotation while shaft 1" turns freely withinit; By virtue of the fact that gearfwheel 9 exceeds gear wheel 8 innumber c of teeth (by one) for every rotation of shaft 1 rope drum 1 will'be tu'rnedunder positive rotative force relatively totl16'I1'O\V Si32ttlOn 'arv feed drum 10 through the angular interval of one tooth-that is, through one for tieth of a revolution. That is to say,- if'shaft .1 be rotating at forty revolutions a second, and if then brake band 19' be applied'to hold feed drum 1O firm againstrotation, rope drum 4 will turn at the rate of one revolution a second. I I

If rope drum 1 is to be turned at high turned, and feed drum 10 is shifted to make secure frictional engagement with shaft 1 and the parts integrally carried thereby, so that thereafter shaft 1 and feed drum 10 shaft andmeshing wheels;

rotateas a -unit Theteeth of pinions 7 then: serve as clutch members, uniting gear-wheels 8 and 9,' and the-consequence is thatrope drum'i lalso rotates asa unit and at equal speed with'shaft 1.

;Nor is this all. It wil be asset that brake band 19 may be constricted upon feed drum 10 With any degree of tension,

from; zero to such amount as-will'hold feed drum l0 firm against i rotation, and that accordingly rope' drum' 1'may-bythese= means be caused to turn at slow sipeed increasing to a maXnn'um -Wh ch in this case amounts to the parts carried integrally thereby," which i in securitymay varyfrom zero'toanamount sufficient-to carry feed-drum 10 as a 'unit' with 1 shaft 1 in it rotation (the 'load' of course will be. a factorin(detsrniiniiigthe value of necessary force). Accordinglyfthe speed of theropedrum 1 when so-driven may vary from zero to the speed of shaft 1.

Under all conditions of service brake bandj' '21. is available tot-regulate the speed-- off'the rotating rope drumfi 5 indicated the essential principles of "structure, "and intimated that a the -particular showing of the" drawings isexemplary merely. I would add thestatement thatdepartures'in details of; structure fromwhat I constitute no departure from, my invention so long as the essential features be retained.

I I have described the inventionas em-v bodied in awinch for a mining'machine; I

repeat what} Was 'said at the beginning; the invention is applicable to winc'hes generally,v wherever suclrvariability of speed is desired.

Q I claim as my invention: 7 I

shaft; a rope drum'mounted for rotation in axial alignment with saidshaft, a feed drum" mounted in; axial alignment with'and movj I able longitudinally ofsaid shaft, andi-nthe range of its longitudinalmovement standing alternately free from and subject to the -ro-; 'tativ e impulseof-the shaft,".a gearfwheel borne by said rope drum and a gear wheel borne by said feed'drum', an'd -apinionjour- I have in "the course of this specification have shown in this exemplarymanner will I i 1'; In a'wi'n'ch the combination of a rotary I na'll'ed inbearingslwhich are r'evoluble about 1 the axis of theshaft and in' unison with the both of said gear-- "2.5 1s winch the combination of rotary shaft, a rope"v drum mounted for" rotationin axial alignment with said shaft, a feed'drum *mounte'd in axialalignment with said shaft f speed, brake band 19 beingslack, collar 12 is and movable longitudinally of said shaftand in the range of such longitudinal movepinion journalled in bearings which are revoluble about the axis of said shaft and in unison with the shaft and meshing with both of said gear wheels, means for shifting said feed drum longitudinally of said shaft, and means for securing said feed drum against rotation.

3. In a winch the combination of a rotary shaft, arope drum mounted for rotation in axial alignment with said shaft, a feed drum mounted in axial alignment with and movable longitudinallyof said shaft, and in the range of its longitudinal movement standing alternately free from and subject to the rotative impulse ofsaid shaft, a gear wheel borne by said ropedrum, a gear wheel borne by said feed drum, anda pinoin journalled in bearings revoluble about the axis of said shaft and in unison with the shaft and meshing with both of said gear wheels, the

effective dimensional ratio being different in the two cases between pinion and gear wheel.

4. In a winch the combination of a rotary shaft, a rope drum mounted for rotation in axial alignment with saidshaft, a feed drum movable longitudinally of said shaft and by virtue of such movability adapted to become frictionally united, in a union of varying security, with the said shaft, a gear wheel borne by said rope drum, a gear wheel borne by said feed drum, and a pinion borne in planetary orbit by said shaft and engaging both of said gear wheels,-substantially as described. V

5. In a winch the combination of a rotatable shaft, a collar keyed to said shaft and extending therefrom, a rope drum "mounted for rotation-1n axial alignment with said shaft, a feed drum mounted in axial alignment with said shaft, said feed drum and said collar being movable, one relatively to the other, in a direction longitudinal of said shaft and in the range: of such relative movement coming into and receding from engagement one with theother, gear wheels borne by the rope drum and the feed drum, a pinion journalled in said collar and meshing with the teeth of both of said gear wheels. I v 6. In a winch the combination of a rotatable shaft, a cage keyed to and encircling said shaft, a rope drum mounted for rotation in axial alignment with said shaft, a

terposed between the opposite faces of cage and feed drum, gear wheels borne by rope drum and feed drum and a pinion j ournalled in said cage and meshing with the teeth of both of said gear wheels.

7.- In a winch the combination of a rotatable shaft, a cage keyed to and encircling.

said shaft, a rope drum mounted for rotation in axial alignment with said shaft, a feed drum mounted in axial alignment with said shaft, said feed drum and said cage being movable,- the one relatively to the other, longitudinally of said shaft, said cage and feed drum forming by and between their adjacent faces an annular recess of wedgeshaped cross section, a wedge ring arranged in said recess, gear wheels borne by rope drum and feed drum and a pinion journal led in said cage and meshing with the teeth of both of said gear wheels.

8. In a winch, the combination of a ro tatable shaft, a cage keyed to and encircling said shaft, a pinion journalled in said cage, a rope drum mounted for rotation in axial alignment with said shaft, a feed drum mounted in axial alignment with said shaft, said cage and feed drum being relatively movable longitudinally of the shaft and by virtue of such relative movement coming in to and receding from frictional engagement,

said rope drum and said feed drum being provided each with a gear wheel, the aforesaid pinion meshing when the parts are assembled with the teeth of both of said gear wheels, means for effecting relative movement of cage and feed drum, and a brake for said feed drum. 1

9. In a winch the combination of a rotatable shaft, a rope drum mounted for rotation in axial alignment with said shaft and operatively related to said shaft through the following instrumentalities: namely, a-

planetary pinion and a feed drum; said planetary pinion belng mounted for revolution about the axis of the shaft and in uni- EDWARD P. RAUSGHER.

Witnesses:

B. P. TRACY, J. L. Gross.

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