US605019A - Island - Google Patents

Description

(No Model.)

- J. W. SHERRY.

. LOOM.

Patented May 31, 1898.

UNITED STATES PATENT QFFITCE.

JOHN w. sHERRY, OE CROMPTON, RHODE ISLAND, AssIeNoR To THE oROMPToN COMPANY, OF PROVIDENCE, RHODE ISLAND.

LOOM.

SPECIFICATION forming part of Letters Patent No.l 605,019, dated May 31, 1898. Application filed 139087111361418, 1897. Serial NoY 662,426. (No model.)

To @ZZ whom it may concern:

Beit known that I, JOHN W. SHERRY, a citizen of the United States, residing at Crompton, in thecounty of Providence and State of Rhode Island, have invented certain new and useful Improvements' in Looms, of which the following is a specification, reference being had therein to the accompanying drawings.

In the course of the production of a 'web of cloth in a loom faults occasionally are caused therein by a defect in the weaving. The loom is stopped vusually as soon as a'mispick is discovered, and the picks of weft last introduced into the web are removed in reversed order by an unweaving process back to the perfect cloth, after which, any needed attention having been paid to the Warp-threads, to the shuttle and its load of weft, or to the parts of the loom, weaving is resumed. Sometimes the fault is not discovered until after several inches of cloth have been woven past it. The unweaving or picking out of the weft back to perfect cloth is slow and tedious work and requires the undivided attention of the loom attendant. Untilit has been completed the loom stands idle. While he is engaged thereat the other looms whichare in charge of the same attendant must go without attention, and` sometimes one or more of the latter stop or are stopped and have to be left idle until they can be attended to in their turn. Heretofore, notwithstanding the fact that a fault in the weaving might affect only a small por.- tion of the width of a web, it has been necessary to pick out or unweave back to the place of the -fault across the entire width of the web, which has involved an expenditure of labor and time proportioned to the said width and a waste of a very considerable amount of material in the shape of the weft which is removed from the web by the picking-out operation. In general these things cannot be avoided. I have discovered, however, that in the production of 'certain classes of goods it is possible to obviate the necessity of picking out or unweaving across the entire width of the web which is being produced in a loomthat is to say,- I '.have'found that in weaving such classes'of goods it is possible when a faurlt is observed in some4 particular portion of the width of the web which is being produced in a loom to proceed by picking out the wefts of such portion only, leaving the remaining portions of the width ofthe web untouched, and then to resume the weaving after having let back the portion rst mentioned tothe cloth-making pointl This mode of procedure enablesv a very great saving of time and labor to be effected and also enables a loom to be restarted and weaving to be resumed after much less delay than otherwise is the case. It saves also in material tothe extent of the amount of weft which under the old method of procedure is picked out and which in practicing my invention is left untouched in the portions of the Web which are not picked out. The aim or object of the invention is'to provide means to enable this mode of procedure to bevfollowed in convenient and practicable manner. rIlhe invention consists in such means. The classes of goods in connection with which the invention is capable of being utilized are those goods of moderate or narrow width which are produced by weaving a broad web in a Wide loom and subsequently dividing the same into narrow webs along one or more longitudinally-extending lines parallel with the selva-ges of the broad web. v

" The invention will be described first with reference to the accompanying drawings, in

which latter I have illustrated one means of reducing the same to practice, after which the distinguishing characteristics thereof will be particularly pointed out and distinctly deiined in the claims at the close of this specification.

Figure l of the accompanying drawings is a perspective, looking from the front thereof, of a loom having one embodiment of my invention applied thereto, only such portions of the loom being shown as are necessary for the purpose of clearly indicating the nature of the invention and the manner of applying the same. Fig. 2 is a perspective looking from the rear of the' said loom. Fig. 3 is a view of the take-up devices in longitudinal section. Fig. LLis a view of such devices in detail. Fig. 5 shows one of the web-cutters, to which refrence is made hereinafter. f

l in the drawings designates the loomframe.

2 2 are yarn-beams.

3 designates the breast-beam.

i t I are take-up beams.

5 designates a broad web of cloth which is produced in the operation of the loom.

I reduce my invention to practice in the following manner:

I provide for dividing the web 5 in the loom into narrower webs as fast as the weaving proceeds. To this end I apply to the breast-beam 3 or other convenient support one or more web-cutters or knives G. Two webcutters or knives 6 G are shown in the drawings, and they are arranged in position, as shown clearly in Figs. l and 2, to cause the ad vance of the cloth as the latter is drawn forward bythe taking-up devices to carry the wefts successively against the edges of the web-cutters or knives, the said edges operating to sever the said wefts in the forward movement. of the cloth, thereby dividing the broad web 5 into the three narrower webs 7 7 7. One of thc web-cutters or knives is shown separately and on an enlarged scale in Fig. 5, in which latter it is shown as comprising an upright blade with a sharpened rear edge, the said edge being formed with port-ions meeting at an angle, into which latter the cloth enters, and the said blade being attached to a base or plate S, which is secured in convenient manner to its support, the latter being the breast-beam in the present instance. The web-cutters are arranged to act at a short distance forward of the cloth-making line in the direction of the advance of the cloth, thus leaving several inches, more or less, of unsevered broad web extending from the cloth-making line to the places at which the broad web is severed into the narrower webs 7 7 i.

In carrying the invention into effect I pro vide for occasioning the taking up of the narrower webs 7 7 7 in unison with one another and by means of devices having a certain independence of action in the case of the rcspective narrow webs, which enables one or more of the latter to be let back or otherwise adj usted or manipulated independently ofthe others as and when required. Separate and independent take-u p mechanisms of usual and known character may be provided for the respective narrow webs; but for the sake of convenience, compaetness, simplicity, and low cost I employ,by preference, the combination and arrangement of cloth-beams and actuating means therefor which I have illustrated in the drawings and which I now shall proceed to describe with reference to the latter.

9 is a shaft on which the three take-up beams et et 4 are mounted end to end. The middle one of these beams is made fast on the said shaft, as by means of a key l0. The other two beams are mounted on the shaft with capacity to turn independently thereon and respectively are provided with means whereby to enable each of them to be clutched to the said shaft,so as to rotate in unison with the latter, the clutching means permitting of disengagement to allow the respective beams to be turnedindependently 011 the shaft. A convenient form of clutching device consists of a toothed wheel or ratchet ll, which is made fast to the shaft adjacent to the outer end of each of the loose beams t t, and of a dog or pawl l2, which is connected pivotally with the said outer end of the adjacent beam, a spring 13 being provided for the purpose of holding the said dog or pawl pressed into engagement with the toothed wheel or ratchet. In practice motion may be communicated to the shaft 0 in any convenient manner for the purpose of rotating the same, this motion being transmitted to the said shaft, for example, by means of a gear It, made fast thereon. rlhe beams 1t t i may be utilized either as clothre ceiving beams or simply as cloth-feeding beams. As will be obvious, the rotation of the three beams it l lin unison will operate to draw forward all portions of the width of the broad web of cloth as fast as it is woven, each of the said beams receiving the appropriate narrow web formed by the subdivision of the said broad web.

lVhen required for the purpose of remedying faults in the weaving or for the purpose of attaining anyother result that may be desired, the entire broad web of cloth maybe let back by letting back all of the narrower webs in unison. lVhen, however, a fault does not extend beyond the width of one of the narrower webs, the letting back of the other two narrower websmay be obviated. In this case when my invention is utilized it is necessary only to sever, between the appropriate weft cutter or knife and the cloth-making line, the as yet unsevered wefts of the broad web. After this the wefts of the narrow web in which the mispiek occurs may be picked out back to and including the place of the fault. Then the said narrow web may be let back to bring the last weft therein contained back to the cloth-making line and weaving may be resumed.

In letting back from either of the end beams 4E t all that is required is to disengage the corresponding dog or pawl l2 from the adjacent toothed wheel or ratchet ll and then to cause the proper narrow web to be drawn backwardly in the loom. In letting back from the middle beam ithe shaft 9 and all of the beams thereon will have to be made to turn rcversely, after which the end beams will be rotated independently of the middle beam for the purpose of drawing forward their webs again into Itheir original position. For the purpose of facilitating the adjustment of the individual end beams 4t- -t and of preventing undue retrograde movement thereof when they are unclutched from shaft 9 I provide at the end of each of such beams a disk 17, having holes 18 for the reception of a pin in the hands of the weaver, the said pin enabling the weaver to ICO IIO

hold the beam while unclutched from the shaft or to adjust the beam and its web as may be required. When one of the narrow webs is let back, as just described, it is necessary that the warp-threads which pertain to the same should be drawn back also and that the tension of the said warp-threads should be maintained uniform with that of the remaining warp-threads. This may be provided for in many ways; but I have heretofore found it most convenient to provide for it by employing a separat-e warp-beam 2 for the Warp-threads Awhich pertain to each of the narrow webs. In

the drawings I have shown three warp-beams mounted at the rear of the loom, the number thereof corresponding with the number of narrow webs intended to be produced. Each of the said warp-beams is made independent of the remaining warp-beams, so that when the need arises the respective warp-beams may be adj usted separately, as required in rewinding upon any one of the same the warp-threads which are supplied therefrom when the said warp threads are slackened by the letting back of the narrow web into which they are interwoven. Each of the said warp-beams is provided with a frictional drag device. In the drawings I have shown a well-known form consisting of a rope or chain l5,passing around one head of each warp-beam, the said rope or chain being connected at one end to a portion of the loom-frame and at the other end thereof to a weighted lever 16. e

I claim as my invention- 1. A loom provided with one or more webcutters or knives whereby to divide longitudinally into narrower webs the, web which is woven in the loom, a take-up shaft, a pluralinterposed between the said shaft and beams comprising toothed wheels andpawls engaging the said wheels, whereby by disengagement of the pawls from the toothed wheels the independent letting back and adjustment of the respective narrow webs is facilitated, and warp-supplying devices permitting of separate adjustment of the warp-threads of each narrow web, whereby to obviate the necessity for picking out the weft-threads of more than the narrow web in whose width a mispick occurs.

2. A loom provided with one or more webcutters or knives whereby to divide lon gitudinally into narrower 4webs the web which is woven in the loom, a take-up shaft, a plurality of take-up beams mounted on said shaft, one of them fast and theothers free to turn thereon, the toothed wheels fast with said shaft, the pawls connected to the free beams and engaging said toothed wheels, whereby to facilitate independent letting back and adj ustment of the respective narrow webs, and the separate yarn-beams supplying the warpthreads pertaining to the respective narrow webs, all contributing to obviate necessity for picking out the weft-threads of more than the narrow web in whose width a mispick occurs.

In testimony whereof I affix my signature in presence of two witnesses.

JOHN W. SHERRY. Witnesses:

GEORGE W. FRASER, ANN E. TIBBIrTs.

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