US777000A - Bobbin. - Google Patents

Description

No. 777,000. PATENTED DB0. 0, 1904.

P. CLARK. l

BOBBIN.

APPLIOATION FILED 00T. 20, 1903.

No. M0021..

Patented December 6, 1904.

PATENT Urraca,

FRANCIS CLARK, 0F PHILADELPHIA, PENNSYLVANIA.

EOBBIN.

SPECIFICATION forming part of Letters Patent No. 777,000, dated December 6, 1904.

Application filed October 20, 1903. Serial No. 177,761. (No modali? To all, whom t may concern,-

Beit known that l, FRANCIS CLARK, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented a new and useful Bobbin, oi' which the 'following is a speciiication.

rlhis invention relates to certain improvements in bobbins, and has for its principal object to provide a means for protecting and strengthening the end or' shuttle-bobbins, particularly with a view of utilizing bobbins that have become cracked or otherwise injured and in which the yarn is likely to catch during the travel of the shuttle across the shed.

rl`he majority of bobbins are formed of comparatively thin wood and in many cases become cracked or broken, especially at their outer ends, and during the process oi' weaving the yarn or thread is liable to catch in one of the cracks and break, rendering it necessary to stop the loom and pick back to the place where the thread broke. This not only results in loss of time and material, but in many cases will cause defects in the fabric. 1t is usual, therefore, to immediately discard cracked or broken bobbins, and this in a large mill is a source of considerable expense.

ln carrying out the present invention the weaver is provided with a tool or attachment that may be quickly applied to a cracked or broken bobbin in such manner as to prevent the thread from catching in the cracks and at the saine time prevent further cracking or breaking of the bobbin while in the shuttle. The device may be applied to bobbins in good condition, if desired, in order to protect the same from injury; but it is intended principally as a convenience for the weaver in utilizing damaged bobbins.

With these and other objects in View, as will hereinafter appear more fully, the invention consists in the novel construction and arrangement oi' parts hereinafter described, illustrated in the accompanying drawings, and particularly pointed out in the appended claims, it being understood that various changes in the form, proportions, size, and minor details of the structure may be made without departing' from the spirit or sacrilicing any of the advantages of the invention.

In the accompanying` drawings, Figure l is a longitudinal sectional elevation of a bobbin constructed in accordance with the invention, illustrating' the same as mounted on a shuttlespindle. Fig. 2 is a detail perspective view oi' the bobbin attachment. Fig. 3 is a sectional view of the end portion ol a bobbin, illustrating the application thereto of an attachment oit' slightly-modified construction. Fig. et is a similar view illustrating a :further modiiication.

Similar' numerals of reference are employed to indicate corresponding parts throughout the several ligures of the drawings.

In the drawings, l indicates a wooden bobbin of the ordinary construction, and 2 a shuttle spindle or skewer ot the usual type, in the present instance split to Jform two arms 4 and 5 of dilierent length, the longer arm having an enlarged head, thus forming a catch for engaging the end of the bobbin. From constant use on spindles of this class and rough handling before and after the spinning' operations the bobbins are often broken and cracked, especially near their outer ends, where the thread runs olf tothe eye of the shuttle. .'Vhen thus injured, the thread is very likely to catch in the cracks and break, resulting in loss to both weaver and his employer.

In carrying out my invention 1 employ an attachment for the end of the bohbin, said attachment beingI in the form oit a metallic cappiece that not only strengthens and protects the bobbin, but forms a smooth surface `for the passage of the thread. In the construction shown in Figs. 1 and 2 the attachment comprises an inner bushing 7 and an outer ring 8, the two being connected by a iiange 9, that fits against the end portion of the bobbin, while the bushing and ring tit snugly against the inner and outer faces of the bobbin, the ring being' rounded in order to form a perfectly smooth surface for engagement by the thread. rlhe bushing is preferably ol such length as to extend inward into contact with the shorter arm of the spindle; but this in all cases will not be absolutely necessary. The flange forms a Vseating-surface for the head or catch of the spindle, and being formed of metal or other hard material is not likely to become worn or broken during the insertion of the bobbin into the shuttle or its removal therefrom.

In some cases the construction may be modified by dispensing with the outer ring and allowing the periphery of the anged portion to form a contact-surface for the thread, as shown in Fig. 3, or the bushing may be shortened or wholly dispensed with and the ring and flange retained, as shown in Fig. 4C. In all cases, however, the thread is held away from the cracks of the bobbin, and the loss from accidental breakage of the thread at this point is prevented.

It will be observed that the diameter of the cap-piece is greater than the diameter of the end of the bobbin, so that when placed thereon the thread 0r yarn will not be in frictional contact with the periphery of the bobbin to any great extent, but held some distance beyond the periphery, as indicated in Fig. l, and will be guided over the smooth outer surface of the cap-piece, so that there will be little or no danger of the thread breaking from undue pressure. The cap-piece 30 is held in place by the usual catch formed at the end of the support, so that it cannot be pulled off by the friction of the thread against it.

By providing a bobbin with a terminal annular ange or enlargement at a point where the thread leads from the shuttle the thread will be held from contact with the bobbin, and thus to a considerable extent reduce the friction and tension 0n the thread as it is unwound from the bobbin, especially during unwinding of the inner layers of the thread or yarn.

The attachment constitutes part of the equipment of the weaver and is carried by him, each attachment costing but a very small sum and being capable of use for an indefinite period and on a practically indefinite number of bobbins, as distinguished from bobbins in which metal end pieces form an integral part of the structure of the bobbin and which increase the cost of the production of the bobbins to a very considerable extent. The device is of especial value for the workman, inasmuch as he may avoid broken threads, and the subsequent stoppage of the loom and loss of time involved in tying the ends and in resultant imperfections, for which the weaver is usually fined. When broken bobbins are found by the weaver, it is merely necessary for him to place the attachment on the end of the bobbin, and this may be accomplished without any loss of time, and the thread will then run as freely as though the bobbin were perfect.

Having thus described the invention, what is claimed is- A detachable cap-piece comprising a cylindrical portion adapted to fit lwithin the end of a bobbin, said cylindrical portion having a liange at its outer end which is bent at right angles to lie parallel with the cylindrical p0rtion and thereby inclose the end of the bobbin, the diameter of the cap piece being greater than that of the end of the bobbin, thereby forming a guide for holding the thread out of contact with said bobbin.

In testimony that I claim the foregoing as my ownI have hereto afHXed my signature in the presence of two witnesses.

FRANCIS CLARK.

IVitnesses:

ALLEN DIXON, ARTHUR CLARK.

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