US1110651A - Clutch for paper-spools. - Google Patents

Description

W. SHEAHAN. CLUTCH FOR PAPER SPOOLS. APPLICATION FILED APB. 22, 1911.

1,1 10,651 Patented S ept. 15,1914.

2 SHEETSfiHEET 2.

IN VE/V TOR WITNESSES. Q WLZZLctZn Sheczhdfl MM 6 v ATTORNEY IIL NORRIS PETERS 60.. PHOTO-LITHO ASH! UNITED STATES PATENT OFFICE.

WILLIAM SHEAHAN, OF OREGON CITY, OREGON.

CLUTCH FOR IPAPER-SPOOLS.

To all whOm it may concern Be it known that I, WILLIAM SHEAHAN, a citizen of the United States, and a resident of Oregon City, Clackamas county, State of Oregon, have invented a new and useful Improvement in Clutches for Paper-Spools, of which the following is a specification.

This application being intended as a substitute for my prior application filed December 31, 1910, Serial No. 600,350.

This invention relates primarily to de vices for clamping the spool of a roll of pa-' per on the shaft on which it is mounted. As well known, such spools are commonly made of wood, iron or paper, but the latter is preferred for its cheapness of manufacture, and saving of freight in transportation, because of its greater lightness. The devices used for clamping the spool on the shaft, however, impose upon it undue wear. In this connection my invention has for its object to provide clamping means which will not impose undue wear on a paper spool; and, furthermore, will insure that the spool will run true. The particular features of my invention, with regard to its use for either purpose, will be taken up in detail in the body of this specification.

In the drawings:

Figure 1 is a sectional elevation illustrating my invention as practically applied for clamping the paper spool on the shaft, the device being shown as appearing before the Wedges are expanded to clamp the spool; Fig. 2 shows an assembly of all the devices comprised within my invention, with parts broken away and parts in section; Fig. 3 is. a transverse sectional detail of one of the wedges of my device, the section being taken on the plane of the arrow A in Fig. 1; and this figure illustrates the means provided for automatically locking the outer end of one of the wedges with the nut for the purpose explained in the body of the specification; Fig. 4 is a cross section approximately taken on a line BB of Fig. 1; and Fig. 5 is a perspective detail of one of the segmental wedges.

The shaft, a, is understood to be rotatably jo-urnaled at its ends in suitable boxing, not shown. It is formed with a flat face 5, so as to restrain the member mounted thereon against rotation. Longitudinally slidable on the shaft, a, is mounted a sleeve 0, of uniform diameter at one end (cl'), which end is provided with a peripheral thread 6, and the Specification of Letters Patent.

Application filed April 22, 1911.

Patented Sept.15, 1914.

Serial N 0. 622,826.

opposite end f is formed with a series of peripheral conical steps. The eye of the sleeve 0 conforms to the peripheral contour of the shaft a, so that it will not rotate on the latter. On the threaded end of the sleeve 0 is mounted a nut h, made with a peripheral flange 6, provided on the interior with a rib g is the spool preferably made of paper, for reasons stated. Within the spool g are inserted a series of segmental wedges 2, provided on their inner faces with bevel steps 7), corresponding With the conical surfaces f of the sleeve 0, as illustrated in Fig. 1. While the drawing shows four Wedges being used, the number of the latter is immaterial, since a greater or lesser number would answer just as well if the other parts of my device are correspondingly arranged. The peripheral conical surfaces of the sleeve 0 and the related surfaces of the segmental wedges 10 must be made in short steps having a steepinclination, in order that the linear displacement, resulting from a short longitudinal movement of 'the sleeve and segmental wedges against each other, will cause an almost full expansion of my clutch. The wedges p are made at their outer ends with a flange 39 formed with a circumferential groove 1, corresponding to the inner rib j of the flange z of the nut h. In order that my device will work properly,it is necessary that the cone-faced exterior of the sleeve 0 and the outer and inner faces of the wedge 39 are accurately made, so that the outer faces of the wedge segments will represent a true circle throughout their lengths while climbing and resting on the cone-faced exterior of the sleeve 0. I prefer to construct the conefaced exterior of the sleeve and the beveledfaced exterior of the wedges p in steps, as shown in Fig. 1, so as to obtain a steeper inclination, and thereby obtain a quicker expansion action.

The flange of the nut h is provided with a lock pin It", formed with a bent head and with a Web t, adapted to be inserted in a cavity a, provided in the flange 11 of the nut it. The lower end of the lock pin is is threaded and has mounted on it a collar Z, on which is seated the lower end of a coilspring m, operating to normally project the lock pin 70 into thecavity s of the groove 1' of the flange-head p of the wedges p.

The purposes of the devices last described is to take care of an occasion when the clutch has not been setup sufficiently tight, for

under such circumstances the segmental a that between the inner faces'of the latter and the cone-faced exterior of the sleeve 0. If this should happen, the lock pin Z of-the nut it would enter the cavity 8 of a segmental wedge and by thus locking such parts together the rotation of the seg- V mental wedges will rotate the nut on the thread of the sleeve 0 and draw up the latter sufficiently to cause the wedges to be properly expanded and clamp the spool.

. The providing of a cavity 8 in one of the wedges is however, merely illustrative of means for connecting the nut h and the segmental wedges for the purpose explained. The lockrpin 70 may also be projected between t'woadjacent segmental wedges. If

the with should be moved to the inner end of the thread on the sleeve 0 without having accomplished the full expansion of the segmental wedges, then the lock-pin, 7 sleeve longitudinally slidable on said shaft; the shaft and the core of said sleeve made having engaged with one wedge, or being projected between two wedges, will hold the wedges against rotation on the sleeve, and the frictional contact between the outer faces of the wedges and the core of the spool will I generally be suflicient to hold the clutch against rotation in the spool. The lock-pin is may be released by merely lifting it against the tension of the coil-spring m, and so arranging it that the web t will be I seated crosswise of,'instead of in, the cavity u. lVhile both the sleeve 0 and the wedge segments 79 move relatively, yet by reason of the greaterfriction being between the outer faces of the segmental. wedges and the spool 1 g, thefsleeve 0 does all thetraveling to and fro on the shaft or, during the operation of clamping and releasing the spool.

In order to limit the longitudinal-play of the sleeve 0 and the spool thereon clamped on the shaft a, I use a set collar as o, shown to all conditions.

in Fig. 2, at one end, and a set collar to at the opposite end, the latter provided with an arm 00, adjustable by a set screw y, since it is my obj set to make my device adaptable To facilitate the rotation of-the nut h, it is provided with spanner holes a. i v

' One of the particular advantages of my device is thatthe segmental wedges are expanded equally, and there is no danger of tearing the surface of the core of the spool, as there is no torsional movement.

. I claim:

1. The combination with a shaft, of a nonrotatable sleeve longitudinallyfslidable on said shaft; one end of said sleeve provided with a peripheral thread and the opposite end being made cone-faced; a nut 'on the threaded end of the sleeve; segmental wedges each formed bevelfaced on the in- I with a peripheralthreadand the opposite end being made cone-faced; a nut on the threaded end of the sleeve; segmental wedges each formed bevel faced on the interior whereby it is adapted to ride on the cone faced exterior of said sleeve; means for engaging the outer ends of said Wedges gaging said nut with said wedges, when by reason of looseness the latter rotate on the sleeve with the spool; and means limiting the longitudinal movement. of the sleeve on theshaft. 1

s. The combination with a shaft, of a 'with engaging faces preventing the latter rotating on the shaft; one end of said sleeve provided with a peripheral thread and the opposite end being made with a series of threaded end of the sleeve; segmental wedges each formed with a series of bevel faced portions on the interior: whereby it is adapted to ride on the cone faced exterior with the nut; means for automatically enperipheral conical steps; a nut on the of said sleeve; said wedges formed with a peripheral flange at the] outer ends and whereby they are engaged with the flange of said nut; means for automatically engaging said nut with said wedges, when by reason of lo-oseness the latter rotate on 1 the sleeve with the spool; andmeans limiting the longitudinal movement of the sleeve on the shaft.

l. The combination with a shaft, .of a

sleeve longitudinally slidable on said shaft;

the shaft and the core'of said sleeve made with engaging faces preventing the latter rotating on the shaft; one end of said sleeve provided with a peripheral thread and the opposite end being made with a series of peripheral conical steps; a' nut on the threaded end of the sleeve; segmental wedges each formed with a series of bevel faced portions on the interior whereby it is adapted to ride on the cone faced exterior of said sleeve;

said wedges formed with a peripheral flange at the outer ends and whereby they are engaged with the flange of said nut; said-peripheral flange of the'nut being provided with a spring-controlled lock pin and the outer flange of one of said wedges being opposite end being made with a series of peripheral conical steps; a nut on the threaded end of the sleeve; segmental wedges each formed bevel faced on the interior whereby it is adapted to ride on the cone faced e2;- terior of said sleeve; said wedges formed with a peripheral flange at the outer ends and whereby they are engaged with the flange of said nut; said peripheral flange of the nut being provided with a springcontrolled lock pin and the outer flange of one of said wedges belng provided with a related cavity for the purpose set forth; and means limiting the longitudinal movement of the sleeve on the shaft.

6. In a clutch, the combination of a sleeve; one end of said sleeve provided with a peripheral thread and the opposite end being made with a series of peripheral conical steps; a nut on the threaded end of the sleeve; segmental wedges each formed bevel faced on the interior whereby it is adapted to ride on the cone faced exterior of said sleeve; said wedges formed with a peripheral flange at the outer ends and whereby they are engaged with the flange of said nut; and means for automatically engaging said nut with said wed 'es, when by reason of looseness the latter rotate on the sleeve with the spool.

7. In a clutch, the combination of a sleeve; one end. of said sleeve provided with a peripheral thread and the opposite'end being made with a series of peripheral conical steps; a nut on the threaded end of the sleeve; segmental wedges each formed with a series of bevel faced portions on the interior whereby it is adapted to ride on the cone faced exterior of said sleeve; said wedges formed with a peripheral flange at the outer ends and whereby they are engaged with the flange of said nut; and said peripheral flange of the nut being provided with a spring-controlled lock pin and the outer flange of one of said wedges being provided with a related cavity for the pun pose set forth. Q 8. In a clutch of the class described, the combination of a sleeve adapted to be mounted on a shaft, said sleeve formed with an exterior conical periphery; a wedge element formed with an interior conical periphery whereby it is adapted to ride on said conical surfaces of said sleeve; means for moving said sleeve and said wedge element longitudinally on each other; and means for engaging said wedge element with said means for automatically effecting said longitudinal movement when a roll supported by the clutch becomes loose.

9. In a clutch of the class desoribed,'the combination of a sleeve adapted to be mounted on a shaft, said sleeve formed with an exterior conical periphery; a segmental wedge formed with an interior conical periphery whereby it is adapted to ride on said conical suriaces of said sleeve; means for moving said sleeve and said segmental wedge longitudinally on each other; and means for engaging said segmental wedge with said means for automatically effecting said longitudinalmovement when a roll supported by the clutch becomes loose.

10. In a clutch of the class described, the combination of a sleeve adapted to be mounted on a shaft, said sleeve formed with a series of peripheral conical surfaces arranged in short steps of steep inclination; a wedge element formed with a series of interior peripheral conical steps arranged relatively to said peripheral surface of the sleeve; means for moving said sleeve and said wedge element longitudinally on each other; and means for engaging said wedge element with said means for automatically effecting said longitudinal movement when a roll supported on the clutch becomes loose.

11. In a clutch, the combination of a sleeve adapted to be mounted on a shaft, said sleeve formed with a series of peripheral conical surfaces arranged in short steps of steep inclination; a segmental wedge formed with a series of interior peripheral conical steps arranged relatively to said peripheral surface of the sleeve; means for relatively moving said sleeve and said segmental wedge longitudinally on each other; and means for automatically engaging said segmental wedge with said means for effecting said longitudinal movement when by reason of looseness the segmental wedge rotates on the shaft and to thereby actuate said moving means.

' 12. In a clutch, the combination of a sleeve adapted to be mounted on a shaft, means preventingthe rotation of the sleeve on the shaft, said sleeve formed with a series of peripheral conical surfaces arranged in short steps of steep inclination; a wedge element formed with a series of interior peripheral conical steps arranged relatively to said peripheral surface of the sleeve; means for relatively moving said sleeve and said wedge element longitudinally on each other; and means for automatically engaging said segmental wedge with said means for efiecting said longitudinal movement when by reason of looseness the segmental wedge rotates on the shaft and to thereby actuate said moving means.

loo

iis

13-. In a clutch of theclass described, the combination of a sleeve adapted to be mount. ed on a shaft and provided; with a peripherical conical wedge shape surface, a wedge 7 element formed with an-inter1orwedge surface arranged relatively to the wedge sur-I face on the sleeve and cooperating therewith to create abinding action to lock'the wedge element and the sleeve together, means for holding the wedge surfaces of the wedge element and the sleeve in binding relation,

threads to force the wedge element inwardly V to cause the wedge surfaces to engage and means between the aforesaid means and the wedge element to cause rotation of the first mentioned means to automatically move the wedge element to' bind against a roll supported thereon when the latter becomes loose. t

15. In a clutch of the class described, the combination of a non-rotatable sleeve adapted to be mounted on a shaft and provided with a peripherical conical wedge shape surface, a wedge element formed with an in -terior wedge surface arranged relatively to the wedge surface of the sleeve and cooperatingtherewith,means engaging the sleeve to operate same, said means having a part which 'lies adjacent the wedge element, and an interlocking device carried by said part and adapted to engage the wedge-element to automatically take up wear of a roll sup-1 ported by the clutch.

' 16; In a clutch of the character described, the combination of a sleeve adapted to be mounted'on a shaft andprovided with a plurality of wedge surfaces, a series of segmental plates formed with a plurality of wedge shape surfaces which cooperate with the wedge surfaces on the sleeve, and means automatically operated when a roll support ed by the clutch becomes loose to create relative movenient betweenthe sleeve and the segmental'plates to cause the cooperating wedge surfaces to force the plates outwardly and frictionally engage the roll and take up the loosenessa l J 11in aclutch ofthe class described, the

'con'ibination of a longitudinally movable sleeve formed with a plurality of peripherical wedge surfaces, a series of segmental plates mounted on the sleeve, each plate having a plurality of wedge surfaces which en gage with and cooperate with the wedge surfaces on the sleeve, and means automatie cally operated when a roll supported by the 'clutch becomes loose to longitudinally inove the sleeve to cause thecooperatlng wedge, surfaces to force the segmental plates out the sleeve, each. of said plates having a plurality of steep short inclined surfaces core respondmg to and cooperating wlth the 1nclincd surfaces on the sleeve, said plates be; mg freely rotatable on the sleeve and each being ind'ependent'and free of the other, and 7 means operable by a roll supported on the clutch for causing rotation of the plates and creating relative longitudinal movement between the sleeveand'plates to frictionally bind them and a. roll supported by the clutch.

l9."ln aclutch of theclass described, the combination of a sleeve formed with a plurality of steep short inclined surfaces, a plurality of segmental plates freely rotatable on the sleeve, each plate having a plurality of steep short inclined surfaces corresponding to and cooperating with the in-' chned surfaces on the sleeve, and means operatingon the sleeve to create relative:

movement between the sleeve and segmental sections to cause the short' steep inclined surfaces to ride one on the other and frictionally bind the platesand sleeve and a roll supported on the clutch, the segmental plates rotating independently of the sleeve during the time of the relative movement. 1 V WILLIAM SHEAHAN.

lVitn'esses: 7. Lewis Cox,

Groin Lona Copies of this patent may be obtained for five cents each, b'yaddres sing the Commissioner of Patents, I Washington, D. C." a

Images