US2046028A - Warp beam flange - Google Patents

Description

` N. E. MARTIN WAP BEAM FLANGE im@ 3Q? 3936.

Filed May l, 1935 ATTORNEYS Patented June 30, 1936 PATENT OFFIQE WARP BEAM FLAN GE Newton 'E. Martin, Leola, Pa.

Application May 1,

4 Claims.

This invention relates to improvements inwarp beam flanges and more particularly to improvements in locking devices for securing warp beam iianges to warp beams in various positions.

An object o-f the present invention is to provide new, simple and efficient devices for locking warp beam flanges to warp beams.

Another object of the invention is to provide nove-l locking devices for the purpose before stated, so constructed that the locking pressure is applied through leverage arrangements Whereby the effective pressure is substantially multiplied. i Y

In carrying out the foregoing and otherrobjects of the invention, a warp beam is provided with externally threaded sleeves .at the ends thereof, onV which are mounted warp beam flanges, the hubs of which are internally threaded to engage the sleeves. A part of the hub of each ange is cut away to provide a. slide- Way or pocket'in which ts a locking member in the nature of a brake-shoe, which member is provided with ridges on one surface corresponding to the pitch and dimensions of the sleeve threads. In order that this shoe can be pressed into such contact with the sleeve as to effectively lock the flange against rotation about the beam, use is made of leverage mechanism. In the form shown a cross bar on the flange has depending therefrom near one end thereof, a wedgeshaped extension which serves'as a fulcrum for a lever. A pressure screw is threaded through the bar near the opposite end thereof to engage the end of the lever remote from the fulcrum point. The lever itselfvis provided with a 'clepending stud, the end of which is rounded to engage the outer surface of the brake-shoe in such fashion as to constitute a stud-and-groove joint. When pressure is applied to the pressure screw, the lever, due to the fulcrum arrangement, in turn communicates this pressure to the brake-shoe with the result that the pressure is so multiplied as to lock the brake-shoe securely to the sleeve, and in turn to thereby lock the entire ange to the sleeve against rotation.

Other features, objects and advantages of the invention will become apparent by reference to the following detailed description of the accompanying drawing, wherein Fig. 1 is a side elevation of a part of a warp beam showing flanges secured thereto by means of an embodiment of the invention.

Fig. 2 is an enlarged fragmentary end view taken substantially on the line 22 of Fig. l; and

1935, Serial No. 19,182

Fig. 3 is a section taken substantially on the line 3 3 of Fig. 2.

Referring now to the drawing, EE indicates a Warp beam of conventional character, such beam being' made preferably, but not necessarily, of Wood, or some other suitable material. Fitting over end portions of reduced diameter of the beam I are sleeves which are preferably made of some suitable metal. The peripheries of these sleeves are threaded as indicated at i2. The driving connections for rotating the beam l0 are not shown herein, since any suitable arrangement, many of which are well-known in the art, can be used. v

The'flanges associated with the warp beam I are indicated generally at I4, such flanges being so constructed as to present fiat surfaces I5 exe tending transversely of the beam.

Referring now particularly to Figs. 2 and 3, it will be seen that the flange I4 is provided with a hub I6 internally threaded as at Il to engage the threads I2 of a sleeve A part of the hub I6 behind the surface i5 is cut away as at I8 and the hub is provided with upturned extensions |9 which serve to provide an inclined guideway or pocket for the reception of a brakeshoe 20. This brake-shoe 26 has the lower surface thereof rounded to conform to the periphery of the sleeve I I, and this lower surface is provided w-ithcross ridges 2| so shaped and dimen- 'sioned as to cause the ridges to fit in the threads |2 of a sleeve I I.

'I'herflange is provided with spoke-like reenforcing members between two of which extends a bar 26 which is preferably, but not necessarilyy formed integrally with the spoke-'like members 25. Depending from the bar 26 near one end thereof is a wedge-shaped extension 21 which serves as a fulcrum for a lever 28, such lever being provided with a depression 29 to receive the. fulcrum. Near the other end of the bar 26 is found an enlarged boss 3D centrally apertured and threaded for the reception of a pressure screw 3|. The lever 28 has a depression 32 in the upper surface thereof into which the rounded end of pressure screw 3| fits. Extending downwardly from the bottom surface of the lever 28 is a stud 34, the lower end of which is rounded as shown to contact with the top of the brake-shoe 20. The

top surface of the brake-shoe 28 has a part thereof somewhat rounded or out away to form a substantially arcuate shaped groove as indicated by the dotted lines so that the stud 34 is in contact with the brake-shoe in what may be called a stud-and-groove joint.

The use and operation of the invention are substantially as follows: With a flange in threadedV engagement with a sleeve on the warp beam, the Vpositioning of thel flange longitudinally of the beam can be accomplished so long as the brakeshoe is not pressed against the sleeve with locking force. The shoeY follows the iia-nge in its rotation due to the Vprovision of ridges on the curved surface thereof and due to its being located in the inclined slideway or pocket. When either one or both of the. flanges have'been moved nso that they are spaced apart the desired distance, the ange or'ilanges may be locked securely against rotation relative to the warp beam by turning the respec-` tive pressure screws 3i to apply a force to the levers.y Since the levers 23 are fulcrumed near their ends, the pressure. applied by the pressure screws is communicated to the brake-sho`es and is multiplied. The result is that the brake-shoes are forced intorcontact with the sleeves with a greater pressure than can b-e obtained by a single pressure screw acting directly on a shoe.

In practice it has been found that the degree of pressure can be varied by varying the position of the fulcrum member 21 relative to the lever 23. In other wordsthe multiplication of pressure'can be increased by having thisfulcrum so positioned as to be as close as possible to one end of thelever, or can be decreased byv having the fulcrum so positioned as to be nearer the center of the lever. An eicient arrangement for locking the shoeV in place with sufficient pressure has been shown.

From theV foregoing it will be seen that the present invention provides a novel Ylocking 1arrangement forV so securing a warp beam ang'e to a warp beam that for all practical purposes movement of the flange relative to the vbeam is eliminated. While the guideway or pockety for the brake-shoe has been illustrated as being tapered, it will be understood, of course, that the side walls of this guideway may be arrangedin parallelism, or in any other-'suitable arrangement to receive square, rectangular,vr 0r` cylindrical brake-shoes. 1t will be understood that modifi# cations `of the invention areV contemplated, in view of which, any limitations imposedl thereupon are to be such only as are set forth in the following claims. liclaim: Y Y. li' i 1. The combination with a warp beam having a peripherally threaded end portion, of` a flange therefonthe hubl of said flange being internally threaded for engagement with the beam threads, a guideway in said hub, a brake-shoe; tting in said' guideway and engaging said beam threads,

a guideway in said hub, a brake-shoe fitting inV said guideway and engaging said beam threads,

.a fulcrum member on said ange and spaced vfrom said brake shoe, a lever having one end por.-

tion engaging said fulcrum member, a stud `ex` Itending from said lever into engagement with said e shoe, and means for applyingY pressure to the other endportion of said lever to force saidY shoe into locking engagement with said beam.

3. The combination with a Warp beam having a peripherally threaded end portion, of a flange therefor, the'hub of said ange Vbeing internally CII from said shoe, said cros's'bar being provided with Y a` depending fulcrum portion, a lever in engagement withsaid fulcrum portion and havinga contactstuden'gaging saidY shoe, and a pressure screw threaded through said'rbarV to engage the end of said lever vopposite the fulcrumV point to force saidpshoe intolocking engagement;Y with 45: The vcombination withY a, Warp beam having aperi'pherally, threaded endportion, of a flange therefon;'theV hubvofsaid flange being internally thread'edfor engagement withk the beam threads, aguideway in said rhub a'brakeeshoe'tting in said guideway and/engaging said beam threads,

said 'brake' shoe :having al substantially arcuate` havinga stud fitting in said arcuate shaped groove finf the) top, of said s hoe,fand a Vpressure 'screw threadedthrough said bar for engaging the end of 'said lever opposite the fulcrum point to' force said `shoe beam.A Y

NEWTON E. MARTIN.

in to locking 'engagement Ywith said e

Images