US1019050A - Shuttle-guard. - Google Patents

Description

F. JOHNSON.

SHUTTLE GUARD.

APPLICATION FILED APE. a, 1911.

1,019,050, l .Patentd Man,

./ A Afb f VM AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA iiNirn FRANK JOHNSON, OF NEW YORK, N. Y.

SHUTTLE-GUARD.

Specification of Letters Patent.

Patented Mar. 5,1912.

Application filed April 8, 1911. Serial No. 619,689.

To all whom t may concern Be it known that I, FRANK JOHNSON, a citizen of the United States, residing in the city of New York, borough of Brooklyn, in the county of Kings and State of New York, have invented a certain new and use- Jful Improvement in Shuttle-Guards, of which the following is a specification.

The invention relates to looms for weaving wire fabrics of the character used in paper-making, and known as Fourdrinier cloth, and particularly to the lay structure of such looms.

The object of the invention is to provide means, as a series of pins carried by the lay and interposed between the warp wires of the upper portion of the shed, for guiding the shuttle in its traverse along the lay and thus preventing injury to the fabric by the escape of the shuttle from its path, such guiding means being yieldingly mounted to avoid distortion of the warp wires due to the harsh action thereon of the relatively fixed pins usually employed.

The invention consists in certain novel features and details of construction and arrangement by which the above object is attained, to be hereinafter described.

The accompanying drawings form a part of this specification and show an approved form of the invention.

Figure 1 is a front elevation of a portion of the lay and reed thereon. Fig. 2 is a vertical section on a larger scale, taken transversely of the lay. Fig. 3 is a corresponding vertical section taken longitudinally of the lay and partly in elevation.

Similar letters of reference indicate the same parts in all the figures.

A is the upper member or lay-cap of the lay, and A1 the lower member or laybeam, supported by the swords A2 A2 pivoted above as in the usual types of overhung looms of this character.

B is the reed through which extend the warp wires, not shown, operated by heddles and harness in any approved manner as will be understood.

A longitudinal groove a is produced in the under tace of the lay-cap near the forward edge, in which is received a strip C, which may be of wood or other lightmaterial, aluminum being preferred as possessing the requisite lightness, strength and stability of form,'carrying a series of downwardly projecting pins D adapted to extend lbetween the warp wires of the upper portion of the open shed, and forming with the lay members and reed a partially inclosed path for the shuttle, indicated by dotted lines at M, in which the shutle is positively guided. The strip C fits loosely Yin the groove a and is free to rise and sink therein, guided by screws or studs A3 inserted from the front of the lay-cap and extending through vertical slots c in the strip. The latter may rise to an extent permitted by the slots and sink by gravity, thus affording the required yielding quality, but to insure the descent of the strip, recesses al al are bored in the lay-cap from the groove a inwhich light helical springs Dl D1 are inserted abutting at their lower ends against the upper edge of the strip and held in position on the latter by inclosing short studs or bosses D2 D2 thereon. Thus equipped the contact of the pins with the warp wires either in the act of opening the shed, or in the swing of t-he lay, is softened sufficiently to permit the taut wires to 'accommodatethemselves to the pins without distortion, breakage or other damage, the tension of the springs being so slight as to permit the strip to yield to such contact by lifting momentarily while the engaged wire or wires escape to one side or the other of the contacting pins, and thus avoid or materially lessen the danger of injury to the delicate fabric caused by harsh unyielding Contact of the fixed pins when such are employed.

Although the strip is shown and described as a single member extendingthe ent-ire length of the lay-cap, it will be understood that `it may be of'two or more sections each yieldingly mounted, arranged vend-to-end to form the whole, and other modifications may be made in the forms, proportions, and arrangements of parts as may be found necessary or desirable in adapting the invention for service under various conditions or wit-h Yvarious types of looms.

I claim 1. In a loom, a lay-beam, reed, and laycap, the latter having a longitudinally eX- tending groove in its lower face, a strip received in said groove with' liberty to rise and sink therein, and having vertical guiding slots, studs in said lay-cap extending through said slots, recesses in said lay-cap above said groove and strip, and springs mounted in said recesses and tending to hold said strip yieldingly in the downward position, all substantially as and for the purpose herein set forth.

2. In a loom, a lay-beam having upper and lower members, the upper member being provided with a longitudinal groove in its under face near its forward edge, a strip received in said groove, pins projecting downwardly from said strip and adapted to extend between the warp wiresof the upper portion of an open shed, said strip being mounted for free vertical movement in said groove, limiting and guiding means extending through said groove and through vertical slots in the strip, and springs in the groove acting upon the upper face of the strip. f

3. In a loom, a lay-beam having upper and lower members, the upper member being provided with a longitudinal groove in its under face near its forward edge, a strip received in said groove, pins projecting downwardly from said strip and adapted to extend between the warp wires of the upper port-ion of an open shed, said strip being mounted for free vertical movement in said groove, limiting Yand guiding means extending through said groove and through vertical slots in the strip, springs inthe groove acting upon the upper face of the strip, and a reed, said pins forming with the lay members and reed a partially inclosed path for the shuttle and said pins when projected extended below the upper face of the shuttle.

In testimony that I claim the invention above set forth I aflix my signature, in presence of two witnesses.

FRANK JOHNSON.

Witnesses:

CHARLES R. SEARLE, FLORENCE J. GREENE.

vCopies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

Washington, D. C.

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