US2102020A - Manufacture of warp beams - Google Patents

Description

Dec. 14, 1937.

F. MOSSBERG 2,102,020

MANUFACTURE OF WARP BEAMS or inal Filed Aug. 29, 1933 INVENT'OR.

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Patented Dec. 14, 1937 UNITED STATES PATENT OFFICE MANUFACTURE OF WARP BEAMS Frank Mossberg, Attleboro, Mass., assignor to Mossberg Pressed Steel Corporation, a corporation of Massachusetts Original application August 29, 1933, Serial No. 687,291. Patent No. 2,027,749 dated January Divided and this application June 13, 1934, Serial No. 730,440

8 Claims.

extending longitudinally of the beam which will be of such shape that the rod for holding the warp threads in position may be readily retained therein.

Another object of the invention is a method by which a substantially square cornered groove extending longitudinally of the beam for the reception of warp threads and a binding rod, may be formed in a metal beam.

Another object of the invention is to overcome the disadvantages present in the rolling-in of a groove in a continuous tubular beam by making the beam in two parts so that there may be a groove formed in the sheet stock for one. of the parts and then subsequentlysecuring these two parts together in the desired assembled barrel formation.

With these and other objects in view, the invention consists of certain novel features of construction, as will be more fully described, and particularly pointed out in the appended claims.

In the accompanying drawing:

Fig. 1 is an elevation of the beam, showing heads mounted thereon and warp threads as positioned in their initial positions on the beam.

Fig. 2 is a section on line 2-2 of Fig. 1. Fig. 3 is a perspective view illustrating two parts of the beam barrel just prior to assembly.

Fig. 4 is a perspective view illustrating the parts secured together along their edges by welding.

Fig. 5 is a sectional view illustrating the first step forming the longitudinal groove, as shown in Figs. 3 and 4.

Fig. 6 is a similar view showing the second step in the operation of forming the longitudinal groove, as shown in Figs. 3 and 4.

Fig. 7 is a perspective view of one of the parts of a modified form of beam.

Fig. 8 is a perspective view of the other part of a modified form of beam.

Fig. 9 is a sectional view illustrating the assembly of the parts as shown in Figs. 7 and 8.

Fig. 10 is a sectional view illustrating a somewhat difierent assembly, that is the channel edges being formed abutting on the inner surface of the beam barrel.

Fig. 11 is a perspective view of the disc used for securing the channel in position.

In the formation of warp beams with longitudinally extending grooves therein, it has been usual to. make such beams of wood and in some cases where continuous metal tubes have been used attempts have been made to roll into such metal tube a groove which would receive the warp and rod which secures the warp threads in position on the beam. This rolling operation which has been attempted to form such a groove is not satisfactory in that square corners cannot be formed to keep the rod in place and the production following this teaching has been discontinued as unsatisfactory; and in order that a square cornered groove may be provided, I have formed the beam barrel in two parts; one part being itself a channel formation with square corners or in some formations I may press a groove into the semi-cylindrical portion of the sheet, stock of the barrel, which in the first operation may have rounded corners but by upsetting or forcing outwardly the bottom wall of this channel, I may in a subsequent operation provide square corners; and the following is a more detailed description of thepreferred means by which these advantageous results may be accomplished.

With reference to the drawing, l0 designates generally the barrel of the warp beam which is provided with heads I I and I2 between which the warp threads l3 are positioned. These warp threads are held in place in the groove l4 in the barrel by means of the rod l5,- which is forced into the groove to hold these warp threads in position. Tension drums l6 are provided at either end of the beam in which trunnions I! are mounted for the supporting of the beam in bearings for rotation.

In forming the groove M in one form which I utilize I provide semi-cylindrical parts l8 and I9, each consisting of sheet stock and which together provide a cylindrical barrel. These parts are each pressed into the shape in which they are illustrated in the drawing. In the part l8 more stock is provided than in the other part for the formation of the warp securing groove which is formed by forcing the stock at inwardly, as shown in Fig. 5, which provides somewhat rounded corners 2| and 22. The bottom wall 23 of the inwardly forced stock is forced inwardly to a greater extent than is desired for the depth of the groove and then in a subsequent operation the bottom wall of this groove is forced outwardly while at the same time providing square corners 24 and 25 with the side walls 26 at right angles to the bottom wall 23 so that when the rod i5 is inserted, the shape of the groove, designated [4, will be such as to maintain this rod in the desired position. At the same time pressure is used lit! to form the groove the stock on either side of the groove is formed on the arc of a circle.

After the part I 8 is shaped in this manner, the two parts l8 and I9 are positioned together with their edges abutting and are welded as at 28 along either edge so as to provide a. generally cylindrical barrel of tubular formation.

In some instances, I provide my two-part barrel in a diiferent way and as shown in Figs. '7 and 8, I have there provided a part 30 which is bent or formed in any desired manner into a substantially channel shaped strip having a recess 3| extending longitudinally thereof and provided with side walls 32 and a. bottom wall 33 which are at right angles to each other and provide square corners at the juncture of these walls. The other part 34 of my beam is substantially cylindrical or suflicient, with the part 30, to complete the remainder of the cylinder. The spaced edges 35 and 36 of the barrel provide a space between them for the reception of the part 30 or channel strip and is welded along the edge portions of this strip, as at 31, so as to provide a secure joint.

In some instances I may desire to position the channel strip 30 of the barrel 34 and while they may be welded in this position I prefer to place a series of notched discs 40 within the tubular barrel with their notches snugly receiving the channel strip 30 and then weld the barrel to the disc thru holes in the barrel, which in turn secure the channel strip in place in the barrel without the channel strip being welded directly to the barrel, and in this case the edges of the walls 32 will abut the inner surface 38 of the tubular barrel 34 and be welded in this position or otherwise supported as by notched discs positioned within the tubular barrel.

By these methods I provide a two-part beam in which a groove may be formed with right angular walls and square corners which will securely retain the rod in place.

This application is a division of my prior application, Serial No. 687,291, on which a patent has been granted as of the date of January 14, 1936, No. 2,027,749.

Having thus described one illustrative embodiment of my invention and the best mode known to me for carrying out my method, I desire it to be understood that although specific terms are employed, they are used in a generic and descriptive sense and not for the purpose of limitation, the scope of the invention being defined and limited only by the terms of the appended claims.

I claim:

1. The method of forming a hollow, tubular warp beam, which consists in providing two sheet stock parts, forming a channel recess in one part extending longitudinally thereof adapted to receive a warp fastening rod and forming the other part to complete the circumference of a circle and then welding said two parts together with their edge portions in a contiguous relation.

2. The method of forming a hollow, tubular warp beam, which consists in providing two sheet stock parts, forming a channel recess in one part with right angularly extending walls and sharp comers, and forming the other part to complete the circumference of a circle and then welding said two parts together with their edge portions in contiguous relation.

3. The method of forming a warp beam, which consists in providing two parts, forming one part generally cylindrical with spaced longitudinally extending edges, forming the other part with a longitudinally-extending recess adapted to receive a warp fastening rod, placing the channel 'part within the spaced edges of the other part and welding the edges of the channel part to the spaced edges of the cylindrical part.

4. The method of forming a warp beam, which consists in providing two parts, forming one part generally cylindrical with spaced longitudinallyshaped with a longitudinally-extending recess having right angularly-extending -walls and adapted to receive a warp fastening rod, welding the edges of the channel part to the spaced edges of the cylindrical part.

5. The method of forming a warp beam, which consists in providing two parts, forming one part generally cylindrical with spaced longitudinally extending edges, forming the other part channel shaped and securing the channel part in position to span said spaced edges by means of a notched disc secured to the barrel with the notch receiving the channel.

6. The method of forming a warp beam, which consists in providing two parts, forming each generally semi-cylindrical in shape, forming a longitudinally extending groove in one part, and welding the edges of the two parts together in abutting relation.

7. The method of forming a warp beam, which consists in providing two parts, each of generally semi-cylindrical shape, pressing a longitudinally extending groove in the outer surface of one part with rounding edges, subsequently providing square corners on said edges and then Securing said parts together.

8. The method of forming a warp beam, which consists in providing two parts, pressing one part into semi-cylindrical shape with a longitudinally extending groove in the outer surface thereof, of a depth greater than desired and then forcing the bottom wall outwardly to provide square corners and securing the edges of the two parts together.

FRANK MOSSBERG.

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