US746951A - Heddle-machine. - Google Patents

Description

No. 746,951. PATENTED DEC. 15, 1903.

W."H. GIBBS. HEDDLE MACHINE.

APPLIOATIDN FILED APR. 29, 1903.

N0 MODEL.

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Fatented December 15, 1903.

PATENT OFFICE.

WILLIAM HIGIBBS, OF CLINTON, MASSACHUSETTS.

.HEDDLE-MACHINE.

SPECIFICATION forming part of Letters Patent No. 746,951, dated December 15, 1903. Application filed April 29, 1903- Serial 1%. 154.780. (No model.)

To all whom it may concern:

Be it known that I, WILLIAM H. GIBBS, a citizen of the United States, residing at Olin ton, in the county of Worcester andSt-ate of Massachusetts, have invented a new and useful Heddle-Machine, of which the following is a specification.

This invention relates to a new and useful improvement upon the heddle'machine shown and described in United States Letters Patent No. 626,900, granted to me June 13, 1899.

The especial object of this invention is to provide a construction which will dispense with the trimming or clipping mechanisms which have heretofore been employed in my heddle-machines for cutting off the ends of the wire-blanks, which are bent back in forming the heddle-eyes, and to provide a construction which will automatically produce heddles, having the ends which are bent back to form the heddle-eyes laid accurately into line with or superimposed upon the body portions.

To these ends this invention consists of novel clamping and twisting jaws, which are constructed to accurately control the ends which are bent back in forming the heddleeyes and to guide the same in accurate alinement with the body-portion wires of the heddles.

In the accompanying drawings, Figure l is a perspective view showing the twisting-jaws opened. Fig. 2 is asimilar view showing the twisting-jaws closed and the wires clamped into accurate alinement thereby. Fig. 3 is a similar view of the parts after the twisting operation has been completed. Fig. 4 is a detail'view of one of the heddles manufactured on a machine embodying this improvement; and Fig. 5 is a sectional view thereof, taken on the line 5 5 of Fig. 4.

In manufacturing heddles upon heddle-machines constructed according to my prior United States patent, No. 626,900, before referred to, the speed and efficiency of operation have been somewhat limited by the cutting or trimming devices-that is to say,-in order to produce the best results it has been necessary that the cutters or knives heretofore used for trimming the ends which are frequently sharpened and carefully adjusted, so that in practice the trimming or cuttingoff devices were the parts which required the most attention. In addition to this, the ends being cut or trimmed obliquely, unless care was taken in tinning or soldering the heddletwists, it sometimes happened that sharp projecting ends would be formed. To overcome these objections in a heddle-machine embodying myimprovement,thetrimmingorend-clipping devices are entirely dispensed with and a form of heddle is produced in which the ends which are bent back to form the heddleeyes are laid accurately into alinement with the'body portion of the heddle, so that not only is one of the most difficult operations of the machine entirely avoided, but a superior heddle is produced in which there can be no sharp projecting ends or other imperfections. These results are accomplished by constructing the clamping and twisting jaws so that they will guide the bent-back ends accurately into place, said jaws being preferably provided with complementary surfaces forming a four-sided clamping-chamber of the required dimensions to tightly compress and accurately position the bent-back ends upon the body portion of the heddles.

Referring to the accompanying drawings for a detail description of a pair of twistingjaws for a heddle-machine embodying my invention, these jaws comprise two com plementarysections or pieces. In the clamping-jaws illustrated in my previous invention the jaws were separated or divided on a single divisional line. embodying my presentinvention the. lower jaw preferably comprises two horizontal surfaces 10 and 11, which are separated by a vertical guide edge 12. At its center the lower jaw is provided with a slight depression 13 for receiving the double-stranded body portion A of a heddle, and the face of the lower jaw is recessed at 1a to receive a retainingtongue of the upper jaw. The upper jaw is provided with a guideway 18 for the ends, which are bent back in the formation of heddle-eyes, with horizontals'urfaces 15 and 16, corresponding with thesurfaces 10 and 11,

.bent back .to form the heddle-eyes should-be In the improved constructionembodying my present improvement and as illustrated in Fig. 4 comprises the central eye B, double-stranded body portions A, and end What I do claim, and desire to secure by Letters Patent of the United States, is-

1. In a heddle-machine, the combination of two relatively movable twisting-jaws, one of which has a guide edge for guiding the ends of the heddle-wires which are bent back to form heddle-eyes into line with the body portions of the heddles.

2. In a heddle-machine, the combination of two separable twisting-jaws, the lower jaw eyes 0, which are formed by bending back--having'a recess or chamber for receiving the the ends of the body portion A, the extreme ends D being laid accurately into alinement or superimposed on the body portions A, as illustrated in Fig. 5. In the operation of forming this heddle the end D as it is bent back first passes down through the guide 18. It then snaps under the tongue 19 to the position indicated in Fig. 1. The twisting-dies are then closed, as illustrated in Fig. 2, so that the four strands formed by the doublestranded body portion and the bent-back end are clamped in a four-sided chamber of exactly the right size to insure the alinement of the end D with the body portion, so that after the heddle is completed by rotating the twisting-jaws, as illustrated in Fig. 3, there will be no necessity of trimming or cutting off any projecting ends of wire.

I am aware that changes may be made in practicing my invention by those who are skilled in the art without departing from the scope thereof as expressed in the claims. I do not wish, therefore, to be limited to the construction I have herein shownand described; but

thereof for guiding a heddle-wire end which is bent back to form a heddle-eye into line with the body portion, and the upper jaw having an inclined guideway for the end of the heddle-wire.

3. In a heddle-machine, the combination of two complementary separable twisting-jaws, the lower jaw having a recess for receiving the double strands of wire of a heddle-body portion and a guide edge at one side thereof, and the upper jaw having an inclined guideway and a tongue of less thickness than said jaw, said parts cooperating to inclose all four sides of the heddle-body portion and the end which is bent back in forming the heddle-eye.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

WM. H. GIBBS.

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