US1663923A - Warp beam - Google Patents

Description

March 27, 1928.

J. R. SHUTT WARP BEAM Filed Feb. 25, 192,7

liter/(ey:

Patented Mar. l27, 1928.

incisa imi-ran S'IAriezs PATENT-OFFICE i ans-sa RAYMOND SHUTT, or woRcEsTnn, MiissAOHUsnTTs, Assreivoiz` To CROMPTON' .i a KNOWLES LOOM WORKS, or WORCESTER; MAssaoHUsETTs'A CORPORATION OF ianssiioHUsiiT'iJs.d Y

WARP BEAM.

Application filed ebiuary 25, 1927. Serial No. 170,984.

This invention relates to a warp beam capable oi" general use, but particularly designed ior sillrlooms and for other looms using very tine warp. found that any slight irregularity in the contour of the warp beam or any unevenness ,caused by the means for attachingthe warp thereto will produce defects in the cloth, which are readily apparent in the finished fabric. 7

lt is the general Object of -iny invention to provide a warp beam having an improved construction for attaching the ends of the warp threads thereto. `A further Object is to provide meansby the use of which the warp threads may be woven to a pointksubstaiitially closer to theeiid of the warp, thus reducing the warp waste.

My invention further relates to arrangenientsand combinations of parts which Will be hereinafter described and more particu lai-ly pointed out in the appended claims. A preferred form of `the invention is shown in the drawings in which Fig. 1 is a side elevation of my improved warp beam; l m *5 2 is an enlarged partial sectional view, taken along the line 2--2 in Fig. 1;

Fig. 3 is an end view, looking in the direction of the arrow 3 in Fig..2; Fig. 4 is a `sectional end elevation alongr the line 1 4 in Figa-12; Y

Fig. 5 is a partial sideA elevation of a slight niodiiication;

, taken Fig. 6 is a transverse sectional view, taken,

- along the line 6 6 in Fig. 2; and

Fi g. 7 is a diagrammatic view illustrating the utility ot my invention.

Referring to the drawings I have shown a Warp beam comprising atubular barrel l0 having beam heads 11 clamped thereon and preferably adjustable to vary the width ot the warp. Friction pulleys 12 are mounted looselyr on the beam shaft 13 and are providerL with hubs 14 to receive'andcenter the ends of the barrel l0. A rope or belt (not shown) encii'cles each friction pulley 12 and is provided with a weight or other means 'for applying the desired tension thereto.

A roll or drum is mounted on thebeam shaft 13 and is provided with slots 21 to receive a cross pin 22 in the shaft 13 by which the roll may be turned angularly. Any other suitable means for securing the roll to the shaft may be substituted.

In such looms Vitis The roll 20is grooved or'cut away longitudinallyyas indicated at 24 fin Fig. 6, and a canvas or otherwise flexible apron 25 is secured to the roll v20 in any convenientmannei', as by {passingjscrews 26 through` a doubled portion at the 'end ot thel fabric to secure it to the' .rollin the cut-away por,- tion 24. f

The` apron `'25 is `preferablysubdivided into a series of relatively narrow strips,l

'mountedside by side along the barrel 20, each stripfbeing adapted to ybe pulled Outward throughra slot 27 (Fig. 1) in the sideof the tubular barrel 10. The outer end portion. of each strip: of the apron 25 maybeprovided with eyelets28 4into which thevends of the warp threads W'may be knotted..

After the warp'threads have been thus' attached to .the apron, awrench or handle 30 (Fig.l 2) maybe applied to the squared end 31 of ythe beam shaft A13 and the shaft may be rotated to ,windthe apron around the roll 20, drawing Athe saine graduallyinward until-the end of the-fabric apron'25 and the portions of the warpthreads knotted thereto have been drawn'inside of the Outer barrel 10'. as indicated in Fig. 4.\

In order to hold the roll in this position, a ratchet plate 35 is secured to the end of the roll 2O and a holding pawl 36 is mounted on a rod 37 rotatable in a bearing in one of the heads 12. A spring 38'fis mounted on inglv engage the ratchet plate as indicated in Fi 4. A handle 39 is secured to the outer end of the 'rod37 and constitutes rneansvbyV which'the pawl36 may be lifted to inopera- 1 tive position `for a purpose -to be described.

VThe pawl 36 is first released and moved from holding position by the handle 377 and the canvas strips 25 are then unwound lby the elongated'slots 27. d The endsof the strips are then in convenient posit-ion for knotting the warp threads thereto. After all or" the warpl tlireads'have been secured yto the-strips 25, the beam'shaft 13 is rothe rod 37 and causes thepawl 36 to yieldd the handle 30 and Aare pulled out through i The regular. winding of the warp may then proceed and it will be noted thatjthe tendency of the warp threads to fan out will cause them to be substantially equally spaced longitudinally of the warp beam at tlje points where they pass through the slots 2 During the winding of the warp beam and the subsequent weaving off of the greater portion of the warp, the canvas strips and the knots of warpr are retained within the barrel 10, which presents a smooth and substantially continuous outer surface.

' pass on their way to the'lease-rods 43 and harnesses44. ,The pawl 36 is then released to reestablish normal relations between roll 20 and friction pulleys 12, afterv which the pulleys aregiven a reverse movement suffi'- cient to restore the original tension of the warp. During this reverse movement the fabric 25 will be wound on the tubular barrel 10 as suggested in Fig. 7 instead of on roll 20. Thereafter weaving will continue until the parts assume the position shown in Fig. 7, thusv permittingthe use of a partV of the warp which would otherwise be wasted.

It will further be-noticed ythat there are no attaching devices whatever outside lof the warp beam barrel when the device is in normal operation and that the warp threads of silk or other fine material lay smoothly thereon and maybe drawn therefrom without producing irregularities in the fabric.

There is, however, aV very slight difference in the circumference of the warp beam measured around the beam and across one of the slots 27 when compared with the distance 'measured around the uninterrupted surface between the adjacent slots 27. The very slight difference between the chord and the arc is sufficient to vary the tension of the warp threads when a great number of fine layers are superposed.

1When extreme accuracy is desired, slots .50 (Fig. 5) in the barrel 5l are provided in a staggered relation in the barrel, with the endsof adjacent slots slightly overlapping and preferably of substantially triangular shape, as 'shown in Fig. `5. With this construction, it will be seen that the amount of slot or opening crossed by each and every warp thread is uniform and always equal to the full width of a single slot, so that variations in warp length are avoided. Under ordinary conditions. the formof my inven-v tion first described is sufficientlyv accurate.

Not infrequently it occurs that the fabric to be woven is narrower thanl the space between the opposite ends of the apron, but

advantages thereof, it will be seen that IV have provided awarp 'beam construction by which much improved results may be obtained in the weaving of silk or' rayon and other fine fabrics, and it'will be apparent that modifications may be made therein by those skilled in the art without departing sov from the scope of the invention as set forth in the claims. I do not wish to be otherwise limited tothe detailsherein disclosed, j

but what I claim is 1. A warp beam Ahaving a tubular outer barrel with an axially extended opening therein, a winding member rotatably mounted'within said barrel, a flexible warp-attaching member secured to said winding-member and' adapted to be drawn thereby through said opening and within said tubular barrel, manually operated means to turnsaid win-ding member within said tubular barrel, a pawl and ratchet mechanism within said outer barrel effective to lhold said member from movement in an unwinding direction but permitting free I. movement in a winding direction, and means external of said barrel for releasing said pawl.

' 2. A warp beam having a tubular outer barrel provided with a series of axially extended slots separated by narrow supporting portions, a' winding member yrotatably mounted within said barrel, and a flexible warpattaching device secured to said'wind# ing member and comprising a series ofseparate strips, eachstrip extending through one of said slots and adapted to be drawn therethrough by said winding member.

3. In a warp beam, a hollow barrel presenting a primary winding surface for the warp, flexible attaching means for the warp, a roll located within the barrel and presenting a secondary winding. surface for the exible member, the vwinding surface of the roll being spaced from Vthe inner cylindrical surface of the barrel, and beam heads movable along the primary surface to vary the width of the warp space, the space between the secondary winding surface and adjacent portions of the 'barrel being sufliciently large to receive those portions of the flexible member whichlie beyond the warp space between the beam heads. y

In testimony whereof I have hereunto affixed my signature.

JESSE RAYMOND snn'rfi" l'lU

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