US2554085A - Warp beam for looms - Google Patents

Description

y 1951 w. A. BLANCHARD 2,554,085

WARP BEAM FOR LOOMS Filed July 17, 1948 BNVEN'TOR WILLIAM A. BLANGHARD.

ATTGRNEY Patented May 22, 1951 UNITED" STATES u OF F l'fi.

WA'RPBEAM FOR EOOMS William A. Blanchard, Mill-bury; Masszyassignor to Crompton' & Knowles Loom Works, Worcester, Mass, a corporation .of "Massachusetts Application-July 17, 1948;"SerialNoZ-39310 19..Claims.z (-Cl. 242-124)- This invention relates to improvements-in warp beams and it is the general objectoftheinvention to provide a beamheadwhich is compact and so constructed-that the warp engaging flange can be-mounted accurately on and heldfirmly to the beam barrel.

The warp of -a loomis wound on a so-called beambetween heads or'flanges on a barrel. The beam is rotatably mounted so that it canturn during loom operation to deliver the warpfor the weaving operation. When large diameters of warp" are required considerable difficulty iseX- perienced in holding thewarp heads firmly to the bar-reland-also keepctheirwarp engaging surfaces true-with-respect to the axis of thebarrel.

It is an important object of the present invention to provide a warp'head constructed essentially of I two parts or members-having interengaging conical surfaces which can bedrawn to-' gether to compress one of the parts-against the barrel and wherein the warp engaging member derives support from the member on the barrelto resist deflection as the diameter ofthe. warp increases during the windingoperation;

It is a further? object of theiinven'tion to pro-' vide aclampingi member having. 2. preferably conical compressible sleeve eXtendingalongJthe bar rel :for compression by a" comple'mentarily: formed part .iof. the: warp iflangez and having also 'a "rim or periphery to engage .-.thet.warp flange at an appreciablev distance. from thelsurface'of the barrel.

It is'a'further object of. the inventionto make the two members ofv the warp iheadin suchv manner-thatlthey canfbeassembled in but one relative angular position;

It is a. still furtherobjectofthe invention to provideya warp. head including a clamp member and a warp engagingmembereach having coni-j cal surfaces I which are drawn-along each other and are guided by mutually engaging surfaces to maintain the .warp engagingmember in correct position with respect to the barrel during the assembly of the head;

With these andzother objects in. view which will appear as theidescription proceeds,;the invention resides in the combination and arrange- Fig. 4 is afragmentary side elevation looking. in theidirection-of arrow. 4, Fig.3,

Fig. 5 is a transverse verticalrisection.onzline 5+5, Fig;v 3,

Fig.z:6 is an 'tenlargedsection on line 6-6, Fig.- 4, and

Fig; 7 is a viewsimilar-to a portion of Fig1i3 but showing a'modified form of the invention; 1

Referring to Figs-l to 6 which sh0wthe= pre'-? ferred form -'of the invention, the beam: com-i prises a 1 cylindrical preferably tubularbarrel I tl which in the preferredform is smooth throughout tits length. The warp .(notashown is .wound on- 1 the. barrel. betweent .twoheads H, and since they are alike only one of themvwill be described in detail; namely, thehead at the left endof the barrel as viewed in'Fig. 1.

The head: is formed of .two..par-ts. .or members onexof iwhichis a warp engaging; member II and theother .:0f':which is a clamping member I 2. Thelatter is formedwith .a disk or rweb'tl3ilthe outer:.part of 1which:is .formedpwith a flanges having. a preferably cylindrical rim or periphery l5. Integraliiirith the web :13 isa conical huhor sleeve :16 iextending 1 along the barreland. divided into at leastztwo sectors :whichcan be :deflected toward the barrel): As shown in Fig. 5..the :hub has-:two-tslots:aor:saw cutsvll and i8 which.:di-v Videilthe sleeve H5 into two sectors-l9 andrzili The flange :l 4 is provided with a'recess 2 l across which. extends .alug.22 inewhich is threadedia spreading'or expanding screw 23. The left end of the screw;1Fig. .4, abuts azsurface .24 atathe left end of the; recess 2 I, and the flange; is provided with a slot 25whichis open at periphery l5 and maybe .radialtas suggested in 'Fig. .4. The slot 25 and screw 23LWhiCh ,extendsacross it are not essential: to certain features of the invention; and can be omittedif desired.,-.

The warp. head member. 'hasa flat warp engaging surface :30 formed on a flange 3| which has-castintegral therewith a hub .32 formed with aninternal cylindrical surface 33 to engage the .peripheraltcylindrical rim i5 of the clamp member. Extending between'the hub :32 I and the flange 3! are several reinforcing'gussets 34.=

The warp head member H is formed'withan internal conical bore .35 which extends along and complements an external conical surface 36 on the sleeve 16. Draw screws 3lpass through the flange I4 and are tapped or threaded as at 38 into the Warp head member vI I. There may be several ofntheseedraw screws.3l as suggested for in-, stance in Fig. 2, and :it will be noted that they are unevenly distributed angularly around the axis .of'the: barrel so that there is but one angular position which the members II and 12 can have with respect to each other. While this relationship of the screws is desirable it is not essential in order to take advantage of all the features of the invention. The heads 39 of the screws 3'! may be housed within pockets 40 of somewhat larger size, as suggested for instance in Figs. 3 and 4.

Separating screws 42 are threaded into the clamping member l2 and have their ends adapted for engagement with the head member H, as at 43 (see Fig. 3). Ordinarily these separating screws will be backed off so that they do not engage the member H, but when it is desired to separate the two members I l and [2 the separating screws will be turned in to release the conical surfaces 35 and 36.

In the manufacture of the warp head the two members [I and [2 may be drawn together by tightening the draw screws 3'1 to force the sectors l9 and 20 against a stub shaft having the same diameter as that of the beam barrel iii. If screw 23 is used it will be turned to expand surface 15 against surface 33. The face 36 is then turned true to the axis of the stub shaft, after which loosening of the screws 23 and 31 and manipulation of screws 42 will effect separation of the conical surfaces 35 and 36, thus permitting removal of the head from the stub shaft (not shown) It is desirable that the two members i l and [2 of the head remain connected to each other by means of the draw screws 3? after finishing of surface 38, but it will be understood that this is not essential.

When a warp is to be wound on the barrel l the heads 1-1 will first be located along the barrel at the required distance apart, the screws 31 'being slack to permit end adjustment, and screw 23 being loose. The screws 37 are then tightened to force the internal conical surface 35 against the external conical surface 36 of the sleeve 16, thereby forcing the sectors I9 and 2f] tightly against the barrel l0. During this relative movement of members H and [2, surface on member l2 guides surface 33 on member H to prevent twisting thereof. The expansion screw 23 will then be turned in such direction as to separate parts 48 and 48 of member l2 on the sides of slot to force peripheral rim l5 of flange [4 against the internal surface 33 of the hub 32. The surfaces l5 and 33 are preferably cylindrical and concentric with the axis of the barrel, and it will be understood that the concial surfaces are peripherally coaxial with the barrel. Tightenin of the expansion screw 23 will establish a tight fit between the flange l4 and the hub 32 so that the member II is supported not only by the sleeve IE, but also by the flange l4. The surface I5 is a considerable distance from the barrel It! as will be seen in Fig. 3.

As shown in Fig. 1 the barrel in the preferred form of the invention has a smooth cylindrical surfac which fits the smooth bore of sleeve [5. The invention, however, is not limited to a smooth barrel, and in the modified form of the invention the barrel can be provided with screw threads 5%, as shown in Fig. 7. When screw threads are used on the barrel I6 the internal bore of the sleeve IE will be similarly threaded, as at El.

From the foregoing it will be seen that the invention provides a compact warp head occupying a small space along the length of the beam barrel H). The two members H and [2 have coacting complementary tapered or conical surfaces which can be drawn together by drawing means,

such as screws 37, to clamp the sectors l8 and 2!] against the beam barrel by forces transmitted through conical surfaces 35 and 36. Conical surfaces 35 and 36 diverge outwardly from the barrel and toward flange [4 of the clamping member. The peripheral rim l5 supports the hub 32 at points spaced from the surface of the barrel IS, the clamp member [2 in this respect affording support for the member ll along spaced zones one of which is close to the barrel and a conical form and the other of which is spaced from the barrel and preferably of cylindrical form. During the drawing together of the two members of parts H and I2 the relative sliding movement parallel to the barrel [9 of periphery l5 of the clamping member flange [4 and surface 33 on hub 32 guides the warp head member H to keep it from twisting or moving in such manner that the surface 30 will become oblique with respect to the barrel axis. While th expanding screw 23 and slot 25 can be used as set forth herein to expand the periphery l5 of the clamping member, they may be omited. When used, however, the expanding screw permits the establishment of a very tight fit between the periphery l5 and the cylindrical surface 33 of the hub 32, and this fit together with that existing at the conical surfaces holds the beam head member ll rigidly in position with respect to the clamp member [2.

Having thus described the invention it will be seen that changes and modifications of the foregoing specific disclosure may be made without departing from the spirit and scope of the invention.

What is claimed as new is:

1. In a warp beam having a cylindrical barrel, a warp head member having a flat warp engaging face, a clamping member on the barrel, said members having engaging cylindrical surfaces spaced from and concentric with the barrel and having also engaging conical surfaces coaxial with the barrel, and means to draw said members together to cause the warp head member to exert forces through said conical surfaces to force a portion of said clamping member against the barrel, said cylindrical surfaces guiding the head member as the members are drawn together.

2. In a warp beam having a cylindrical barrel, a warp head member having a flat warp engaging face and having a cylindrical surface concentric with and spaced from the barrel and having also a conical surface coaxial with the barrel, a clamping member on the barrel having a cylindrical surface engaging the cylindrical surface of the warp head member and having also a conical surface complementing and engaging the conical surface of the warp head member, and means to draw said members together to cause the warp head member by forces transmitted through said engaging conical surfaces to force part of the clamping member against said barrel while said cylindrical surfaces move relatively to each other and guide the warp head member relatively to the clamping member.

3. In a warp beam having a cylindrical barrel, a warp head member having a flat warp engaging face and having an internal cylindrical surface concentric with and spaced from the barrel and having also an internal conical surface spaced from and coaxial with the ,barrel, a clamping member on the barrel having an external cylindrical surface engaging said internal cylindrical surface and having also an external conical surface coaxial with the barrel'and complementing aasgoea' 51:. and engaging saidihternal conical surfaceaandmeans to draw saidmembers togetherahd cause the warp *he ad member by forces- 5 transmitted g through-saidconical surfaces to force portions of the clamping memberadjacent-to said-external conical surface against said barrel while the cy lindri'calsurfacesguide said-warp head member as the latteris drawn toward saidclamping member.

4.- In 'awarp beam= having acylindrical barrel, a warp head=member-having a flatwarpengag ingface," a hub-on said member spacedfromthe bar-rel,=a clamping*mernberonthe barrel-;-a flange forming 'part of said clamping -member-'and-'-en-- gaging-said hub; complementary tapered mutuallycngaging surfaces on said members"inclined outwardly from the barreltoward saidflange, and--means to drawsaid members togethertocause -t-he-warp head member by forces trans mitted through said tapered surface to compress portions-of the clamping member adjacent to the tapered surface'thereof againstthe ba-rrelwhile" said hub slides along and is guided-'bysaid flange.

5. In 'a" warp beam having a' cylindrical barrel, a'warp'head member-having a flat- Warp engaging face, a hub extending laterally'fromandintegral with said 'member and concentric with and spaced from the barrel, a clamping "member on the barrel hayinga flange engaging said "hub; a

sleeveintegral with the =flange and extending along the barrel, complementary mutually engagingconical surfaces onthe warp'head member and saidsleeveyand'means to draw said members together: while "said-flange guides said hub to cause the warp head member 'by' forces transmitted through'said conicalsurfaces to force said sleeve "against the barrel.

6.- In a warp beamhaving a. cylindrical barrel, a warp'head'member 'having'a fiat surface .to' en gage the warp andhaving. an integral hub 'pro-' vided withaninternalcylindrical surface concentric with andspaced from the barrel and having also an internal conical surface coaxial with and spaced fromthe barrel, a clamping member on the barrel having a-circular 'flangeprovided with/anexternal cylindrical surface engaging said internal cylindrical surfacelof the hub, a.,sleeve integral with'theflange extending along "the'ibarrel'and'having an external conical surface.engaging"and"complementing said inr ternal 'conicalsurface of the head member, and screw means for drawing said members together while the cylindrical surfaces engage each other to guide the warp head member relatively to the clamping member and effective to cause said warp head member by forces transmitted through said conical surfaces to force said sleeve against said barrel.

7. In a warp beam having a barrel, a warp head member having a flat Warp engaging face, a clamping member on the barrel, said members having mutually engaging guide surfaces slidable relatively to each other in a direction parallel to the barrel, said members having also mutually engaging tapered surfaces, and means to draw said members together to cause the warp head member to exert forces through said tapered surfaces to force a portion of said clamping member against the barrel while said guide surfaces slide relatively to each other.

8. In a Warp beam having a barrel, a Warp head member having a flat warp engaging face, a clamping member on the barrel, said members having mutually engaging guide surfaces slidable relatively to each other in a direction parallel to the barrel,- said members ha'ving also mutually engaging "surfaces I tapered outw'ardly from the barrel in a direction away from said warpengaging face, and means to draw said memberstogether to cause the Warp headmember to 1 exert forces :through said tapered surface to :force a portion of said 'clamping member=against the barrel while said guide-surfaces slide relativel-yto each other, said means-comprising a plurality of screws extending throughthe clamping -member and threaded into thewarp'head -member and-- disposed non-uniformly: around the axis of the barrel.

9. In a-warp head member fora warp beam having a barrel anda clamping member provided with cylindrical and conicalsurfa'ces spaced-from and coaxial I with the barrel, said head member ineluding a warp engagingflange and having i a cylindrical surface to engage the-cylindrical sur face of the clamping member :and 'having also.:a

conical surface to engage the conicalsurface of' the clamping member 10..In a warp head member for a-warp beam having a barrel and a clampingmember thereon: formed with an external cylindrical surface and an external conical surface,'both of said-surfaces being coaxial withiand spaced fromthe barrel, said head member comprising a warp'engaging flange, a hub integral with the: flange having an internal cylindrical surface to engage the external cylindrical surface of i the clampin member; and said member having an internal conical surfa'ce to engage the conical surface of the clamping member.

11. A clamping member for a warp beam hav ing a barrel and a-warp head-member formed barrel, said clamping member 'beingformed with anexternal cylindrical surface to engagethe internal cylindrical surface of the'warp head member and havinga sleeve formed with' an-ex-ternal conical surface to engage the internal conical surface of the warp flange.

13. In a warp beam having a cylindrical barrel, a warp engaging head surrounding the barrel and having a cylindrical surface concentric with and spaced from the barrel and having also a conical surface coaxial with and spaced from the barrel, a clamp member having a circular flange located within the cylindrical surface and supported by the barrel and having a conical sleeve complementing and engaging the conical surface on said Warp engaging member, means drawing said members together to cause said sleeve to be forced against the barrel by forces transmitted from the head through the conical surfaces, said flange having a part thereof formed to be expansible for engagement with said cylindrical surface on the head, and expanding means forcing said expansible part of the flange into tight holding relation with respect to said cylindrical surface.

14. In a warp beam having a cylindrical barrel, a warp engaging head having a hub concentric with and spaced from the barrel and having also a conical surface coaxial with the barrel, a clamp member having a conical surface complementing and engaging the conical surface on the warp head, a circular flange forming part of said clamp member located within the hub and having a part thereof expansible toward the hub, means drawing said warp head and clamp member together to cause the warp head acting through said conical surfaces to force a part of the clamping member against the barrel, and means carried by the clamp member expanding said expansible part of the flange into close fitting relation with respect to the hub.

15. A clamping member for a warp beam having a barrel and a warp head member thereon formed with a hub spaced from and concentric with the barrel, the head member having a conical surface coaxial with the barrel, said clamping member comprising a circular flange formed with a surface to engage the hub and having an open slot therein extending inwardly from the periphery of the flange, expanding means on the clamping member engaging parts of the flange on opposite sides of the slot effective to move said parts away from each other, and a sleeve integral with the flange to extend along the barrel and having a conical surface to engage the conical surface of the head member.

16. A clamping member for a warp beam having a barrel and a warp head member thereon formed with a hub spaced from and concentric with the barrel, the head member having a conical surface coaxial with the barrel, said clamping member comprising a circular flange formed with a substantially circular surface to engage the hub and having an open slot therein extending inwardly from the periphery of the flange, an expanding screw threaded into part of the flange on one side of the slot and extending across the latter and engaging another part of the flange on the opposite sideof the slot, said screw being turnable in a direction to cause separation of said parts of the flange, and a sleeve integral with the flange to extend along the barrel and having a conical surface to engage the conical surface of the head member.

17. A clamping member for a warp beam having a barrel and a warp head member thereon formed with a cylindrical surface concentric with the barrel and having a conical surface coaxial with the barrel, said clamping member having parts defiectable toward the barrel by forces transmitted through said conical surface and having other parts formed with a periphery expansible to engage said cylindrical surface.

18. In a warp beam having a cylindrical barrel, a warp head member having a flat warp engaging surface surrounding the barrel, a hub on said member spaced from the barrel and concentric therewith, a clamp member on the barrel secured to said head member and having a circular periphery lying within the hub and having a slot extending inwardly from said periphery toward but terminating short of said barrel, and expanding means screw threaded into a part of said clamp member on one side of said slot and extending across the latter and abutting another part of the clamp member on the opposite side of said slot and effective to separate said parts of the clamp member and force said periphery into tight holding relation with respect to said hub.

19. In a warp beam having a cylindrical barrel, a Warp head member having a flat warp engaging surface surrounding the barrel, a hub on said member concentric with and spaced from the barrel, a clamp member on the barrel within said hub secured to the head and having a circular periphery for engagement with the interior of said hub and having a slot extending inwardly from the hub toward but terminating at a point spaced from the barrel, and an expanding screw extending transversely of the axis of the barrel screw threaded into a part of said clamp member at one side of the slot and extending across the latter and abutting another part of the clamp member on the opposite side of said slot and efiective when tightened to expand said periphery by separation of said parts of the clamp member circumferentially of the latter to force said periphery into tight holding relation with respect to the hub.

WILLIAM A. BLANCHARD.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 321,635 Palmer July 7, 1885 927,005 Sands July 6, 1909 2,144,070 Leinbach Jan. 17, 1939

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