US2748807A

US2748807A - Shuttle tips

Info

Publication number: US2748807A
Application number: US295911A
Authority: US
Inventors: Jr John J Kaufmann
Original assignee: Steel Heddle Manufacturing Co
Current assignee: Steel Heddle Manufacturing Co
Priority date: 1952-06-27
Filing date: 1952-06-27
Publication date: 1956-06-05
Anticipated expiration: 1973-06-05

Description

June 5, 1956 J; J KAUFMANN, JR 2,748,807

SHUTTLE TIPS Filed June 27, 1952 F I G. I

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IO l6 l9 l5 l8 INVENTOR. JOHN J. KAUFMANN JR.

ATTORNEY United States Patent SHUTTLE TIPS John J. Kaufmann, Jr., Greenville, S. C., assignor to Steel Heddle Manufacturing Company, Philadelphia, Pa., a corporation of Pennsylvania Application June 27, 1952, Serial No. 295,911

4 Claims. (Cl. 139-196) This invention relates to shuttle tips, that is to say, to the construction and arrangement of the tip portions of loom shuttles, and more particularly to a novel manner of cushioning the metallic tip members usually employed at the ends of the shuttles.

It is, of course, well known that cushioning washers have commonly been employed in loom shuttles between the base of the metallic tip and the shuttle body, but heretofore the washers so used have been of a single unitary type, usually made of a more or less elastic material. One of the most popular designs comprises a single solid washer of approximately of an inch in thickness. However, in the use of such washers, it frequently happens, by reason of the shocks imparted to the metallic tips when the same are engaged by the pickers, that the tips become loosened sufficiently to permit fine warp threads being caught in the crevice between the base of the tip and the body of the shuttle.

The foregoing condition has been aggravated recently by the higher speeds of the looms, the use of harder picker members to engage the shuttle, and also by reason of the use of the finer nylon yarns which are now available.

The principal object of the present invention is to provide a shuttle tip construction of a novel character whereby there will be less likelihood of the warp thread being caught in a crevice at the base of the metallic tip member.

A further object of the invention is to provide a shuttle tip construction of the character aforesaid in which the tendency of the metallic tip member to become loosened will be greatly minimized.

A further object of the invention is to provide a shuttle tip construction of the character aforesaid which will be relatively inexpensive.

As hereinbefore pointed out, various efforts have heretofore been made to overcome the difiiculties set forth above, but none of the solutions suggested have proven entirely satisfactory. However, by the use of the construction and arrangement herein set forth, it is possible not only to minimize the tendency of the shuttle tip to become loosened in the body of the shuttle, but also, in the event the tip member becomes slightly separated from the body, there will be less likelihood of the warp thread being caught in a crevice at this part .of the shuttle.

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

Figure l is an enlarged view, partly in elevation and invention; and

Fig. 2 is a view, in longitudinal section, also enlarged,

iillustrating the completed assembly of the tip portion of .a loom shuttle.

It should, of course, be understood that the description and drawing herein are illustrative merely, and that various 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 body 10 of the shuttle is, in accordance with the present practice, preferably made of dogwood, or wood of similar characteristics, and the same is provided with a metallic tip member 11. The tip member 11 is provided with the usual pointed nose portion 12, and a pin like shank portion 13 of a preferred shape designed to retain the tip member 11 permanently on the end of the shuttle body 10 after the shank portion 13 of the tip member 11 is driven into the hole 14 drilled in the end of the shuttle body for that purpose.

The end of the shuttle body 10 may, if desired, be reinforced by a ring member 15, which is driven into an annular recess 16 provided in the end of the body portion of the shuttle to receive the same, said recess 16 being concentric with the hole 14 in the end of the shuttle body and into which the shank portion of the tip member is driven.

The principal novel feature of the present invention comprises the provision of a multiplicity of relatively thin Washers 17, which are disposed between the base 18 of the nose portion 12 of the metallic tip member 11 and the end face 19 of the shuttle body.

While various materials are suitable for the formation of the washers 17, it has been found that satisfactory results may be obtained by making the same of thin vulcanized fibre, preferably using about eight in number, which initially would each be of a thickness of about .005 inch.

However, when the metallic tips are driven in place, on the end of the shuttle body, considerable pressure is employed and the fibre Washers are compressed to a considerably less overall thickness and when so compressed, they have the appearance and effect of a single unitary washer.

While the preferred material of the multiple washers is vulcanized fibre, various other materials have been tried and good results have also been obtained with a plurality of thin washers made of cloth, leather, paper, plastic, etc.

By the use of the multiple washer arrangement as above, it has been found that there is considerably less tendency of the metallic tips to become loosened in the ends of the shuttle bodies, and even when the same do become loosened to the slight extent which would ordinarily result in a crevice between the base of the nose portion of the metallic tip and the end face of the shuttle body, such crevice will be distributed between the several washers and will not become of sufiicient extent to permit the warp to catch therein, with the result that a longer period of operation will elapse before corrective measures are required to reseat and resecure the tip members in the ends of the shuttle bodies.

I claim:

1. A shuttle tip construction comprising a shuttle body, a tip member mounted on the end thereof, said tip member having a pointed nose portion and a shank portion extending into a hole in the end of the shuttle body, and a multiplicity of separate paper thin washers surrounding the shank portion of the tip member between the base of the nose portion of the tip member and the end face of the shuttle body, said washers each being unbroken.

2. A shuttle tip construction comprising a shuttle body, a tip member mounted on the end thereof, said tip member having a pointed nose portion and a shank portion extending into a hole in the end of the shuttle body, and a multiplicity of separate paper thin and highly compressed washers surrounding the shank portion of the tip member, said washers: each being unbroken.

3; A shuttle tip construction comprising a shuttle body, a metallic tip member mounted on the end thereof, said tip member having a pointed nose portion and a shank portion extending into a hole in the end of the shuttle body, and a multiplicity of separate paper thin washers surrounding the shank portion of the tip member, said washers being interposed between the base of the nose portion of the tip member and the end face of the shuttle body.

4. A shuttle tip construction comprising a shuttle body, a metallic tip member mounted on the end thereof, said tip member having a pointed nose portion and a shank portion extending into a hole in the end of the shuttle body, and a multiplicity of separate washers surrounding the shank portion of the tip member, said washers being made of vulcanized fibre of approximately .005 inch in thickness and being interposed and highly compressed between the base of the nose portion of the tip member and the end face of the shuttle body.

References Cited in the file of this patent UNITED STATES PATENTS 164,446 Grilley June 15, 1875 1,516,671 DArcy Nov. 25, 1924 FOREIGN PATENTS 742,854 France Jan. 4, 1933