US2019821A - Heddle frame - Google Patents

Description

HEDDLE FRAME Filed April 27, 1954 INVENTORS Patented Nov. 5, 1935 UNITED STATES zbiaszr PATENT OFFICE HEDDLE FRAME Application April 27, 1934, Serial No. 722,691

9 Claims.

My invention relates to heddle frames for looms, and it relates more particularly to the construction and arrangement thereof.

As is well known, the most popular form of heddle frame at present in use comprises top and bottom rails, usually made of wood, and connected to each other at their ends by metal straps in which the heddle supporting rods are mounted. It is necessary that such frames be relatively light, yet sufficiently rigid and durable to withstand the stresses and shocks to which they are subjected during the operation of the loom, and one of the principal difiiculties encountered in the construction of such frames is to provide Satisfactory means for securing the end straps lto the ends of the top and bottom rails.

It is desirable that the construction employed be such as to enable the frames to be readily assembled in an economical manner. It is also desirable that the construction be such that in the event of one of the rails breaking or becoming worn, the same may be easily detached and a new rail inserted, without dismantling the entire structure or requiring that the frame be removed from the loom.

Furthermore, to be satisfactory, the construction must be such that expansion and shrinkage in the width of the Wooden rails, which occur from time to time by reason of climatic changes, will be properly taken care of without sacrificing the rigidity of the connection.

The principal object of my present invention is to provide, in a heddle frame in which the top and bottom rails are made of wood and connected at their ends by metallic straps, improved means for connecting said end straps to the end portions of said top and bottom rails, whereby the same will be securely attached and likelihood of deformation at the point of connection will be reduced to a minimum.

A further object of my invention is to provide a connection between the end straps and the top and bottom rails of the frame which will permit the parts to be rapidly and economically assembled.

A further object of my invention is to provide a connection between the end straps and the top and bottom rails of the frame, which will permit the replacement of a damaged rail without dismantling the frame or removing it from the loom.

A further object of my invention is to provide a connection between the end straps and the top 55 and bottom rails of the frame which will not be the following description, taken in connection f With the accompanying drawing forming part l hereof, in which:

Figure 1 is a front elevation of a heddle frame embodying the main features of my present invention; lo

Fig. 2 is an enlarged fragmentary detail view, partly in section and partly in elevation, illustrating the construction at one corner of the frame;

Fig. 3 is a vertical section, taken approximately on the line 3-3 of Fig. 2; 15

Fig. 4 is a view similar to Fig. 3, but with the rail shown in the position assumed during the assembly of the frame;

Fig. 5 is a perspective view of a brace member constituting one of the elements of the invention; go

Fig. 6 is a view similar to Fig. 5, showing a modied form of brace member; and

Fig. 7 is another View similar to Fig. 5, showing another modied form of brace member.

It will, of course, be understood that the de'- 25 scription and drawing herein contained are illustrative merely, and that various modications and changes may be made in the structure disclosed Without departing from the spirit of my invention. 30

Referring to the drawing, in the particular embodiment of my invention therein shown, the

heddle frame comprises top and bottom rails it), made of wood and connected at their ends'by end members Il, made of iiat metal. The end 35 members I I extend across the ends of the rails Iii, the end portions thereof being bent over as at I2 and seated in recesses at the ends of the vouter edge portions of the rails, being secured to the rails at this point by means of wood screws I3. 0

The inner corners of the rails iii are secured to the end members I I by brace members Eli. Each of the brace members I4 is provided with a horizontal portion I5, seated in a recess in the edge portion of the rail I0, and secured thereto at this 4,5 point by means of a wood screw I6.

Each of the brace members I4 is also provided with a verticalv portion I'I, abutting against the end member I Iv and provided with an open ended slotv I8. The horizontal portionl of the brace member I4 is connected to the vertical portion l i thereof by an angular portion I9, as shown in Figs. 1 to 5 of the drawing, but in lieu of this angular portion, the brace member may be shaped as shown in Fig. 6 of the drawing, having a 55 curved connecting portion 20, or as shown in Fig. 7 of the drawing, having the horizontal and vertical portions connected directly to each other by a relatively sharp bend as at 2 I.

The vertical portion I'I of the brace member I4 is secured to the end member II by means of a rivet 22. This rivet is of peculiar conformation, comprising a shank portion 23 extending through a complemental aperture in the end member, an enlarged shouldered portion 24 which is engaged by the slot I8 of the brace member I4, and a fur-ther enlarged head portion 25 which retains the slotted vertical portion II of the brace member I4 on the shouldered portion 24 of said rivet. The -end of the shank portion 23 of the rivet is hammered over in the usual manner as at 26, to hold the rivet in place in the end member II.

It should be noted that the riv-et 22 is positioned some distance from the inner corner of the rail I 0, so that the portion of the end member I I which is reduced in cross-section, by reason of the rivet passing therethrough is some distance from the corner of the rail, thus minimizing the likelihood of bending at this point.

The heddle supporting rods 21, upon which the heddles 28 are mounted, extend through slots in the end members II in the customary manner, and the apertured projecting ends thereof may be engaged by the usual spring hooks 29 mounted in the end members I I, although it will of course be understood that any other manner of mounting the heddle supporting rods, and any other means for securing the same, may be employed if desired.

1n the assembly of a heddle frame made in accordance with the present invention, the brace members I4 are preferably rst secured by the wood screws I6 in the recesses at the inner corners of the rails I0, whereupon the slotted vertical portions I'I of the brace members I4 may be caused to engage the shouldered portions of the rivets 22, as shown in Fig. 4 of the drawing. The rail l may then be swung to the proper position with respect to the end portions of the end members I I, and the wood screws I3 then inserted to complete the assembly.

This manner of assembling the structure permits the use of automatic screw driving machines, which cannot be used when the brace member is Iixedly riveted to the end member, as is done with some heddle frames now in use. Furthermore, by the provision of the slot I8 in the vertical portion I'I of the brace member I4, the efficiency of the Abrace member will not be impaired when expansion or shrinkage of the wooden rail I0 occurs. A brace member constructed as hereinbefore described will be found in practice to impart considerable rigidity to the frame, and there will be little likelihood of bending of the end members at the inner corners of the rails, such as frequently occurs in many of the heddle frames at present in use.

I claim:

1. A heddle frame comprising top and bottom rails, end members' having their end portions secured to said rails, and brace members at the inner corners of the rails; each of said brace members having a horizontal portion secured to the inner edge of a rail, and a vertical portion abutting against the end member and slidably connected thereto.

2. A heddle frame comprising top and bottom rails, end members having their end portions secured to said rails, and brace members at the inner corners of the rails; each of said brace members having a horizontal portion secured to the inner edge of a rail, a vertical portion abutting against the end member, and an angular portion connecting said horizontal and vertical portions, the vertical portions of the brace members being slidably connected to the end members.

3. A heddle frame comprising top and bottom rails, end members having their end portions.

secured to said rails, and brace members at the inner corners of the rails; each of said brace members having a horizontal portion secured to the inner edge of a rail, and a vertical portion abutting against the end member, the vertical portion of the brace member having an open ended slot; and rivets mounted in the end members, each of said rivets having a portion engaged by the slotted vertical portion of a brace member.

4. A heddle frame comprising top and bottom rails, end members having their end portions secured to said rails, and brace members at the inner corners of the rails; each of said brace members having a horizontal portion secured to the inner edge of a rail, a vertical portion abutting against the end member, and an angular portion connecting said horizontal and vertical portions, the vertical portion of the brace member having an open ended slot; and rivets mounted in the end members, each of said rivets having a portion engaged by the slotted vertical portion of a brace member.

5. A heddle trame comprising top and bottom rails, end members having their end portions secured to said rails, and brace members at the inner corners of the rails; each of said brace members having a horizontal portion secured to the inner edge of a rail and a vertical portion abutting against the end member, and rivets mounted in the end members at points away from the inner corners of the rails, each of said rivets being slidably engaged by the vertical portion of a brace member.

6. A heddle frame comprising wooden top and bottom rails, metallic end members having their end portions bent over and secured to the outer edges of the rails, and brace members at the inner corners of the rails; each of said brace members having a horizontal portion secured to the inner edge of a rail, and a vertical portion abutting against the end member and slidably connected thereto.

7. A heddle frame comprising wooden top and bottom rails, metallic end members having their end portions bent over and secured to the outer edges of the rails, and brace members at the inner corners of the rails; each of said brace members having a horizontal portieri secured to the inner edge of a rail, a vertical portion abutting against the end member, and an angular portion connecting said horizontal and Vertical portions, the vertical portions of the brace members being slidably connected to the end members.

8. A heddle frame comprising wooden top and bottom rails, metallic end members having their end portions bent over and secured to the outer edges of the rails, and brace members at the inner corners of the rails; each of said brace members having a horizontal portion secured to the inner edge of a rail, and a vertical portion abutting against the end member, the vertical portion of the brace member having an open ended slot; and rivets mounted in the end members, each of said rivets having a portion engaged by the slotted vertical portion of a brace member.

9. A heddle frame comprising Wooden top and. bottom rails, metallic end members having their end portions bent over and secured to the outer edges of the rails, and brace members at the inner corners of the rails; each of said brace members having a horizontal portion secured to the inner edge of a rail, a vertical portion abutting against the end member, and an angular portion connecting said'horizontai and vertical portions, the vertical portion of the brace member having an open ended slot; and rivets mounted in the end members, each of said rivets having a portion engaged by the slotted vertical portion of a brace 5 member.

JOHN JACOB KAUFMAN N.

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