US2204442A - Warp beam - Google Patents

Description

June 11, 1940. PATRICK 2,204,442

WARP BEAM Filed June 6, 1938 "A "IIIIIIIIIIIILII n IIIIIIIIIIIIIIIIIIIIIIJ.

I ent-ov JDSEph .Pad'r'mk MW/AM Attorney Patented June 11, 1940 "UNITED. STATES T j OFFICE WARP BEAM Joseph M. Patrick, Worcester, Mass, assignor to Crompton & Knowles Loom Works, Worcester,

Mass, a corporation of Massachusetts Application June 6, 1938, Serial No. 212,092

2 Claims.

Loom warp beams ordinarily comprise a warpthread receiving barrel carrying a friction head or some similar device to retard the forward feeding of the warp during the weaving operation. The beam is generally formed with a gudgeon ateach end to be received by. holding pockets in the loomframe, and serving also to support the beam when the latter is in the warp winding machine. Itis an important object of my presentinvention to provide a simple means for holding the gudgeon to the barrel when the latter is made of a metal tube or the like and also provide a method for holding the gudgeon and cast- '-\.,,ing the holding block therefor when the barrel is horizontal.

Since warp beams are frequently comparatively longit is desirable to keep them horizontal during the molding operation, and it is a further object of my present invention to provide a stop flow of molten metal along the length of the tube. The plug is preferably made with a pocket to receive one end of the gudgeon while the other within the barrel and located between the moldand plug. 7 I

It is necessary to make some provision for preventing the cast metal when cool from sliding lengthwise within the tube and this result I may accomplish in several different ways. In, the

preferred form I employ a rod extending diametrically through the barrel and having its ends received by apertures in'the barrel, the gudgeon and rod having mutual engagement along fiattened areas so that each tends to prevent rotation of the other as the molten metal flow 50 around them.

contact with the gudgeon. These short rods/beor plug to-be inserted into the tube. to limit the end of the gudgeon is received by an exterior In a modification I employ rods or the like. secured in perforations in the barrel and projectj ing toward the center thereof but without having 7 come embedded in the molten metal and by their engagement with the barrel hold the cast metal and gudgeon in fixed position.

In another modification the barrel is provided with apertures which are-closed by a portion of the outside moldv so that the molten metal flows 5 outwardly through said perforations but is stopped by an interior cylindrical surface of the outer mold, thus forming lugs which prevent longitudinal motion of the cast metal in the tubular barrel. g h v In all forms of the invention I find it desirable to use theplug when the barrel is kept horizontal during the molding operation, andin the modifled forms somev portion of the. gudgeon located within the mass of molten metal will be non- 15 circular so, as to prevent relative rotation of the gudgeon with respect to the molten metal which surrounds it. Some warp beamsare formed with. attaching means for the warp requiring perforations extending along the beam'and when a beam 20.

appear as the description proceeds, my. invention resides in the combination and arrangement of parts hereinafter described and set forth in the claims.

.In the accompanying drawing, whereinthree convenient, embodimentsof my invention are set forth:

i Fig. 1 is a vertical section through, one end of a beam made according to my present invention after the casting operation ,hasbeen completed,

Fig. 2isaview similar ,to'Fig. 1 but showing the 40 plug and outside mold'inv place to ccnfinethe molten metal, I

Fig, 3 is a vertical section'on line 33 of g v Fig. 4 is a -.vertical section on line 015 Fig. 2,

Fig. 5 is a view similar to Fig. 2 but showing the first modification of the invention wherein short rods held by the warp; barrel extend into the. body of cast metal,

Fig. 6.is a view similar .to Fig. 3 but showing the first .modification, 1 Fig. '7 is a second modification in which the cast metal fiows into perforations formed in the beam barreLand w i Fig. 8 is a view similar to Fig. 3 but showing the second modification.

Referring to Fig. 1, I have shown a hollow metallic beam barrel Ill, preferably of steel, and a friction head having a periphery |2 to receive some form of friction device, such as a strap, to control let-off of the warp during weaving operations. Located in the end of the tube II] is a block of cast metal, such as cast iron, indicated at i3 into which are tapped bolts M which hold the friction head H securely to the" barrel Ill. The cast metal l3 may have a hub l5 extending along a steel gudgeon G which projects beyond the end of the hub to be received either by bearings in the warp winding machine or pockets in a loom frame. In all forms of my invention the beam will be substantially as described except for'the form of the gudgeon G and certain other characteristics of the cast metal l3 which will appear hereinafter. The gudgeon is turned to be true with the surface of the barrellln and the latter will have wound thereon warp threads which will ordinarily be confined between warp heads not shown but wellknown and similar, for instance, to those set forthin Patent No. 2,025,890.

In the preferred form. of my invention the gudgeonhas an outer bearing surface 20 and an inner end 2| which is semi-circular in cross section as suggested in Fig. 4, thereby providing a flat surface 22 against which lies another flat surface 23 formed on a steel cross rod 24 the ends of which fit closely into perforations 25 formed in the barrel I0. When preparing to cast metal around the gudgeon and the rod 24 a plug 30 is fitted into the tube ID for a distance depending upon the length of the gudgeon. This plug fits as closely as is consistent with sliding engagement with the interior of the tube and is formed with a cylindrical pocket 3| which receives the inner end of the slabbed or semicircular gudgeon end 2|. The diameter of the pocket 3| is substantially the same as that of the gudgeon or slightly larger and the fact that the pocket 3| is circular in cross section permits the placement of the plug 30 in any angular position relatively to the tube l0.

The outer end 2|] of the gudgeon is then fitted into a pocket 35 aligned with the pocket 3| and formed in an outer mold or form 35 which has a shell 3'! extending along and fitting closely over the outer surface of the tube H] at the end thereof, as suggested in Fig. 2. The body of the mold 36 may be recessed as at 38 to form the previously described hub l5, and a metal pouring gate 39 may be provided.

When assembling the parts for the preferred form the rod 24 has its ends fitted into the perforations 25 and the flattened surface parallel to the axis of the barrel. The gudgeon is then inserted into pocket 35 and the shell 3! of the mold 35 fitted over the end of the tube and slid therealong. of the shell permits rotation of the latter'so that the surface 22 can be made to lie along thesurface 23. Further endwise motion of the outer mold toward the plug will move the inner end of the gudgeon into the pocket 3| and when the mold 35 has been moved as far as possible by engagement of the end 4| of the barrel with a vertical wall 42 of the mold, clay or the like indicated at 43 is used to seal the joint between the outer surface of the tube ID and the end of the shell 31.

Molten metal such as cast iron is then poured ly with respect to the barrel.

The inner cylindrical surface 40.

into the gate 39 and surrounds the gudgeon and the rod 24, flowing into that part of the pocket 3| not occupied by the end 2| of the gudgeon and flowing also into the recess 38 to form the hub l5. Flow of the molten metal along the tube is limited by the plug 30 and upon cooling the cast metal tightly grips the gudgeon and rod 24, the latter holding the cast metal block IS in fixed position with respect to the barrel Ill and the cast metal holding the gudgeon central- Any tendency of the gudgeon or the rod 24 to turn will be prevented by the mutual engagement of the surfaces 22 and 23. After cooling the mold 36 is removed but the plug 39 may remain in the barrel In if desired. If, on the other hand, the barrel is to be provided with perforations for the purpose of holding warp threads such as those shown in Gordon Patent No. 1,654,216, the plug 30 will be washed out.

In the first modification shown in Figs. 5 and 6 I may use three short rods 50, preferably of steel, which are fitted into apertures 5| in the periphery of tubular steel barrel 52 and gudgeon 53 has a cylindrical outer end as in the preferred form and has also a cylindrical inner end 54. Between the ends the gudgeon is machine or other wise treated to provide a non-circular portion 55. The gudgeon isheld by the mold 36 which will be the same as in the preferred form and fits into the pocket 3| of the plug 30 which will also be the same as in the preferred form. In this modification the cast metal will be introduced in the same manner as that described in the preferred form while the beam barrel is horizontal and upon cooling the rods 50 will hold the mass or block of cast metal 56 tightly with respect to the barrel while said mass of metal will hold the gudgeon centrally with respect to the tubular barrel.

In the second modification of the invention shown in Figs. '7 and 8 the gudgeon 53 may be the same as in the first modification but the rods 5|] are omitted and the apertures 5| are covered by the shell 3'! of the mold 36. In this second modification therefore the metal flows out into the apertures 5| and is limited by the interior surface 40 of the shell 31. Upon cooling the integral lugs 6| on the block 6|] of cast metal pass into the apertures to hold metal 60 rigidly with respect to the tubular barrel 52 and the gudgeon will be held as in the first modification.

It is to be understood that in both the first and the second modifications the plug 30 will be used as in the preferred form and can remain within the barrel if desired.

From the foregoing it will be seen that I have provided an improved form of warp beam wherein the supporting gudgeon is held by a body of cast metal poured directly into the hollow metallic barrel. It will also be seen that flow of the molten metal along and within the hollow barrel is limited'by the plug 30 which also provides a support for the inner end of the gudgeon during the molding operation. In the preferred form it will be seen that the engaging surfaces of the rod 24 and thegudgeon tend to position these parts, the inner end of the gudgeon being supported not only by the plug as already described but also by the rod 24. Also in the preferred form the semi-circular end 2| of the gudgeon is able to slide along surface 23 of the rod 24 when the mold 3G is moved over the end of the tube I 0, thereby assisting in directing said end 2| into the pocket 3|. In the first modification the short rods are gripped tightly by the cooling cast metal to hold them fixedly to the hollow barrel. In the second modification the molten metal flows through the apertures 5!, the extent'of the fiow being limited by the shell 31.

The method for securing the gudgeon to the barrel as set forth hereinbefore is not claimed in this application but is made the subject matter of another application.

Having thus described my invention it will be seen that changes and modifications may be made therein by those skilled in the art without departing from the spirit and scope of the invention and I do not wish to be limited to the details herein disclosed, but What I claim is:

1. In a warp beam having a metallic tubular barrel provided with perforations adjacent one end thereof, a gudgeon projecting from one end of the barrel, a rod fitted into the perforations and extending across the interior of the barrel, said gudgeon and rod having mutually engaging flattened surfaces, and a block of cast metal engaging the interior surface of the, barrel and surrounding the gudgeon and the rod and clos ing'said end of the barrel, the rod tending to prevent movement of the block of cast metal relatively to the barrel, and said rod and block of 1 cast metal holding the gudgeon in fixed position with respect to the barrel.

2. In a warp beam having a metallic tubular barrel with diametrically opposite perforations in the periphery thereof adjacent one end of the barrel, a gudgeon projecting from said end of the barrel and having a flattened area, a rod extending diametrically across the interior of the barrel and having the ends thereof terminating'ln said perforationsand having a fiattened area engaging the flatttened area of the gudgeon, mutual engagement of said areas tendr ing to prevent rotation of the gudgeon and rod about the axes thereof, and a block of cast metal closing the end of the barrel andengaging the interior surface of the latter and surrounding the rod and gudgeon to hold the same against relative motion, said rod tending to prevent

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