US2931396A

US2931396A - Reeds for looms

Info

Publication number: US2931396A
Application number: US690654A
Authority: US
Inventors: Frank H Kaufmann
Original assignee: Steel Heddle Manufacturing Co
Current assignee: Steel Heddle Manufacturing Co
Priority date: 1957-10-17
Filing date: 1957-10-17
Publication date: 1960-04-05
Anticipated expiration: 1977-04-05

Description

April 1950 F. H. KAUFMANN 2,931,396

REEDS FOR LOOMS Filed Oct. 17, 19s"! ATTORNEY REEDS non Looms rank H. Kaufmanu, Huntingdon Valley, Pa., assignor to teel Heddle Manufacturing Company, Philadelphia, Pa, a corporation of Pennsylvania Application October 17, 1957, Serial No. 690,654 3 Claims. (Cl. 139-192) This invention relates to reeds for looms, and the same is particularly adaptable for use in the construction of reeds of the pitch band type. The invention can also be used in reeds of the all metal kind, in which the reed dents and other parts are held in place by solder or the like.

Heretofore in the use of reeds for looms, whether the same be of the pitch band type, or of the all metal type, it has long been recognized that wear of the reed which is caused by the shuttle passing across the same is greatly accentuated by the initial impact of the shuttle against the end strut of the reed as the shuttle is propelled through the shed to lay in the weft or filling.

It has been usual and customary to use metallic memhere for the end struts of loom reeds, usually of rectangular shape in cross-section, which in some instances have had the corners rounded to minimize the wear which occurs as the shuttle starts across the reed and through the shed, but such shaping of the end struts afifords little if any advantage.

The principal object of the present invention theretc re is to provide a novel formation of the end struts cf loom reeds which will effectively serve to minimize the wear, not only on the reed but also upon the shuttle, which results from the impact as the shuttle is propelled across the loom with each pick.

With the foregoing in view, the present invention contemplates the use of an end strut of a novel form in crosssection, which will be quite efiective for the purpose of imparting rigidity to the reed, and will at the same time permit the shuttle to pass more freely at the be inning of its travel across the loom, and thereby greatly reduce the wear, not only on the reeds, but also on the shuttles.

The nature and characteristic features of the present invention will be more readily understood from the following description, taken in connection with the accom panying drawing forming part hereof, in which:

Figure l is a side elevation of a reed for looms, the same embodying the main features of the present invention; and

Fig. 2 is a horizontal section taken on the line 2-2 of Fig. 1, the same being greatly enlarged.

It should, of course, be understood that the description and drawing herein are illustrative merely and that varinited Estates Patent Patented Apr. 5, 1960 one modifications and changes may be made in the structure disclosed without departing from the spirit of the invention.

Referring to the drawing, in the particular embodiment of the invention therein shown, the reed primarily comprises a plurality of suitably spaced dents 19, each preferably made of a thin fiat strip of metal. The upper and lower ends of the dents 10 extend into the top and bottom binding portions 11, the same being secured therein in the ordinary and usual manner.

The novel feature of the present invention comprises the peculiar shape in cross-section of the end struts 12, which are provided at each end of the reed for the purpose of spacing the top and bottom binding parts 10 and to afford the requisite stiffness of the reed.

The end struts 12 are each made of metal of rigid character, such as steel, and are of elliptical crosssection. The minor axis of the cross-section of each end strut 12 is substantially equal to the width of each of the dents 10, whereas, the major axis of the elliptical cross-section is considerably greater, and in each instance of such size as to provide the required stiffness of the structure.

The ends of the end struts 12 are secured, in any preferred manner, in the binding structures 11 at the top and bottom of the reeds.

It will be noted that reeds made with end struts 11, of the character above described, will function much more efficiently than those in which the common forms of end struts of rectangular cross-section are used.

The wear on the end struts of the reed, as well as the wear on the shuttle, will be greatly minimized, and in some instances the speed of the loom may be increased by reason of the diminution of the shock occurring at the time when the shuttle engages the end of the reed as it is propelled through the shed.

l claim:

1. A reed for looms comprising a plurality of spaced dents having their upper and lower ends secured in binding structures at the top and bottom, and having end struts of substantially elliptical cross-section with the major axis disposed in the central plane of the reed.

2. A reed for looms comprising a plurality of spaced dents having their upper and lower ends secured in binding structures at the top and bottom, and having end struts of substantially elliptical cross-section with the minor axis substantially equal to the width of the dents.

3. A reed for looms comprising a plurality of spaced dents having their upper and lower ends secured in binding structures at the top and bottom, and having end struts of substantially elliptical cross section with the major axis disposed in the central plane of the reed, and the minor axis substantially equal to the width of the dents.

Reierenees Cited in the file of this patent UNITED STATES PATENTS 2,172,972 Hall Sept. 12. 1939