US1400711A - Selvage-trimmer for looms - Google Patents

Description

H. T. ABBOTT.

SEL-VAGE TRIMMER FOR LOOMS. APPLICATION FILED DEC-7,1920.

1 4 71 Patented Dem. m 1921 2 SHEETS-SHEET 1.

Fig. 1

lnv eI'IToI". Harry TAbboTT Aflys.

H. T. ABBOTT.

SELVAGE TRIMMER FOR LOOMS.

APPLICATION FILED DEC-71' 1920.

1 AOOJYl 1 a Patented Dec. 20, 1921.

2 SHEETSSHEET 2- 7 Fig.4.

2s Q s L I .hnvenTor Hurry T. Abbofi' byMWaW Any? j the field of action beneath the selvage of' the 1 l T. ABBOTT, 0F MAYS LANDING, NEW JERSEY, ASSIGNOE T0 DER G0RP0 nhrron, or nornnnnn, MASSACHUSETTS, a oonronarron or MAINE.

SELVAGE-TR an: n! we meant.

Specification of Letters Batent.

ea noonrs. r .1.

Patented Dec. 20, T9210 Application flIedJJDecember 7, 1920. Serial No. 428,346.

New J ersey, have invented an Improvement.

in Selvage-Trimmers for Looms, of which the following description, in connection with the accompanying drawing, is a specification, like characters onthe drawing repre-- senting like parts.

This invention has for its object to provide a simple and effective mechanism for,

trimming or severing the loose projecting filling ends at the selvages of the cloth being woven in a loom. i

During the weaving operation whenever the filling is renewed or changed the ends of the filling are left projecting from one or the other or both of the selvages and these projecting ends must be trimmed off. In the case of the automatic filling. replenishing loom employing a feeler there are always two ends, one leading from the selvage to the abandoned filling carrier and the other leading from the hopper or magazine into the fell upon the first shot of the fresh filling carrier. In the case of the automatic replenishing loom not provided with a feeler and where exhaustion ofthe' filling is indicated by a device such as the weft fork there is. an end leftfrom the first shot of the fresh filling carrier after'replenishment and there may be an end left by the abandoned filling carrier if exhaustion takes place between the selvage and the position of the shuttle when boxed. In the case of an ordinary loom not provided with automatic filling'replenishing means one or both of these filling ends are left projecting upon the replenishment of the filling by hand. In all of these cases these projecting filling ends must be trimmed ofi at the selvages close thereto before the cloth is in merchantable conditiom It has been common practice heretofore to provide filling cutting instrumentalities to sever these projecting filling ends mounted on the usual temples acting in vertrcal planes and at points substantially 1n l ne with the temple rolls. The object of the present invention is to provide a cutting or severin mechanismsupported from the frame of loom with cloth and forward of the fell together with suitable means for operating this cutting mechanism whereby any filling ends which depend from the selvage pass into the field of action of the cutting mechanism and are severed or trimmed off close to the selvage as i the weaving operation proceeds. The mechanism of this invention may be employedby itself-as in the case of a loom. not provided with the usual temple thread cutter or it may be employed in conjunction with the usualtemple thread cutter, and in this latter case it functions to trim or sever any filling ends which for any reason are not caught or' severed by the temple thread cutter.

' The'present invention has for its further object to provide a selvage trimming mech anism of a double character located forward of the fell but with two fieldsof action, one

beneath and the other above the selvage of ends resting upon or projecting above the cloth at the selvage are caught and severed.

The present invention has for its further object, in connection with a selvage trimming mechanism, the provision ofm'eans for guiding and positioning the selvage with respect to the trimming mechanism to insure the projecting filling ends being severed thereby.

These and other objects and features of the invention will appear more fully from the accompanying description and drawings and will be particularly pointed out in the claims.

In the drawings:

Figure 1 is a top plan view of a portion of an automatic filling replenishing loom with a preferredform of the invention embodied therein. I

Fig. 2 is a view in side elevation of the temple and trimming or severing mechanism illustrated in Fig. 1.

Fig. 3 is a detail in perspective showing the operative elements of the trimming mechanism and the guiding means illustrated in Figs. 1 and?! in their relation to the cloth.

Fig. 4 is a view similar toFig. 2 but show- I Fig. 5 is a bottom plan view of the construction shown in Fig. 4.

Fig. 6 is a view in cross section taken on the line 66 of Fig. 4 and also showing the cloth and a depending filling end.

The mechanism of this invention, as has been pointed out, is adapted for use with various kinds of loomsand either alone or in conjunction with other filling severing means. As an illustrative embodiment of a preferred form,'the invention is shown in Fig. 1 in a loom of the automatic filling replenishing type, such as the well-known Northrop type, in which the filling exhaustion is indicated by a weft fork. In all cases the filling severing mechanism is located at both sides of the cloth so as to trim or sever the projecting filling ends at both selvages but as the mechanism is the same at both sides of the cloth, it is sufficient to illustrate and describe the construction at but one side.

So also as the invention is not concerned With a particular form or construction of loom no detailed description or illustration v of the loom itself is necessary.

A loom, such as that shown in Fig. 1, comprises a suitable frame having at the front a breast beam 1. The shuttle 2 carrying the bobbin or filling carrier 3 is picked back and forth across the swinging lay at and uponthe beat up of the lay the pick of the filling left by the shuttle is beaten into the cloth at the fell 5. -In the .case of the automatic filling replenishing loom illustrated a supply of fresh filling carriers or bobbins is maintained in a hopper or magazine 6 mounted on the frame and suitable means are provided for indicating the substantial or complete exhaustion of the running filling and thereupon effecting the discharge of the exhausted filling carrier from the loom and the substitution from the hopper or magazine of a fresh filling carrier. In the construction illustrated a weft fork 7 is shown and if upon a pick of the shuttle the filling is absent or loose opposite this weft fork the mechanism acts to effect filling replenishment. If the end of the ex hausted filling extends beyond the selvage this end must be trimmed off. The end of the fresh or in-coming filling will ofcourse extend from the hopper'or magazine to the selvage and must also be trimmed ofi". These ends will usually depend or hang downbelow the cloth at the selvage and be carried forward by the cloth during the continuation of the weaving operation. The present invention primarily acts upon any ends' thus left depending from the cloth at the selvage. In the double or duplex form the invention also acts to trim either or both of these filling ends if perchance they alre lfhrown or dragged back on top of the "c ot mechanism.

.. referably this trimming or Looms are universally provided with a temple at each side, the main function of which is to maintain the cloth forward of the fell in a stretched condition of uniform Width. Such a temple is shown in connection with the loom in Figs. 1 and 2 and is usually supported by, and projects rearwardly from the breast beam. As illustrated, the stand or box-like casing 7 of the temple is secured by a bracket 8 to the breast beam 1. The shank 9 of the temple slides in the stand 7 and is yieldingly normally projected rearwardly as by a spring (not shown) in the temple stand. This shank 9 carries at its rearward end the temple head. IVithin the temple head, which is slotted to permit the passage of the cloth there is usually provided a pin-pointed roll. At each beat up of the lay, the front of the lay strikes against a heel 11 depending from the temple forcing it forwardly over the cloth. This latter feature is referred to because it is mounted on the temple and is conveniently utilized in the present invention for operating the selvage trimming 90 With this preliminary description of the pertinent features of the loom we may now pass to a description of a preferred form of construction of the present invention.

The cutting mechanism of this invention 7 is located. forward of the fell and is supported from the frame of the loom. Its field of action is beneath the selvage as contra distinguished from a position in a vertical plane along side the selvage. In the double or duplex form there are two fields of action, one beneath and one above the cloth.

severing mechanism comprises a fixed cutting blade having its cutting edge extending along side the selvage and slightly below the plane thereof and a movable cutting blade pivoted to the fixed blade, operating in a plane extending beneath the-cloth and preferably substantially parallel thereto. In the double form the fixed cutting blade is provided withtwo cutting edges, one slightly above and one slightly below the selvage and there are two movable cutting blades, both preferably pivoted at the same point to the fixed cutting blade and operating in parallel planes, oneabove and one below the plane of the cloth. 4

The cutting mechanism is conveniently supported from the frame of the loom by being attached to the temple or its bracket 8 whichv in turn is attached to the breast beam portion of the loom frame. In the construction illustrated, a base plate 12 is secured, as by screws 13, to the under side of the bracket 8 and projects forwardly therefrom. The fixed cutting blade 14 is in turn secured, as by the screws 15, to the base plate 12 and is usually positioned wlth type, the lower inner edge of the blade 14': is preferably the cutting edge and when it is of the double type both inner edges are cutting edges. -The movable cutting blade is preferably an L, or hook-shaped, blade 16 pivoted at 17 to the fixed blade 14 and extending beneath the cloth preferably in a plane substantially parallel therewith. When the, cutting mechanism is of the double type there are two similar movable blades, the one 16 at the bottom and the other 18 at the top, both carried by the pivot 17. In the latter case a spacer 19 is provided to maintain. the position of the outer ends of the movable cutting blades, and these ends and the spacer are secured together by'rivets 20.

,It will thus be seen that if the outer end of the movable cutting blade is swung forwardly the edge of the movable cutting blade will be brought into cooperationwith the edge of the fixed cutting blade and any fill-v ing end depending from the salvage will be severed close to the selvage. Vhen both movable cutting blades are provided the upper cutting bladewill also wipe over the top of the'cloth and push off and sever, in cooperation with'the fixed cutting blade, any filling end lying on the top of the cloth or projecting upwardly from the selvage.

The. movement of the movable cutting blade or blades to effect the severing action may be effected from any suitable moving part of the loom." This is conveniently secured by connecting the outer end of the movable cutting blade or blades'to the heel 11 or to a portion of the temple head. Such a connection is shown as a link 21" pivoted to the stud 22 on the temple heel and passing through an aperture 23 in the outer end oi the movable blades. ,With such a connection, at each beat up of the lay, the temple head is slid forwardly, and in turn swings the movable cutting blade or blades about the pivot 17 to efiect the severing operation.

As the lay swings rearwardly the temple head springs rearwardly and the movable cutting blades move to open position.

Guiding means are also provided in connection with the present invention to insure the maintenance of the. cloth at the salvage in prescribed relation to the cutting mechanism In'the illustratedembodiment of the invention two sets of guiding means are shown. In the first place aset of laterally projecting guide fingers are provided forwardly of the cutting mecha-- nism. These are shown as a finger 24 projecting from the base plate 12 above the cloth and a pair of fingers 25'p-rojecting laterallybeneath, the cloth and all formed on, a plate 26 secured to the top of thebase lar mechanism to that already described is shown in connection with a thread cutting temple. In this case the trimming orsevering mechanism of this invention acts as a supplementary device to trim off any projecting filli ends which are not caught and severed y the temple thread cutter. The construction of the trimming or severing mechanism of this invention isprecisely the same as that already described and its location is the same and hence no further description is necessary. The only difference illustrated is in the operative connections.

In the construction thus illustrated, the head 27 of the temple is usually formed at, or connected to, the same form of shank 9 as heretofore but in this case the temple head is extended laterally and provided with a temple thread cutter comprising a fixed cutting blade 28 and a. double movable cutting blade 29. 1 Ihis movable cutting blade 29 rocks and slides in the temple head and. its movement is-effected in one direction by the spring 30 and in the other direction by the lay beating up against the heel 31 depending from the movable cutter blade and standing normally in the rear of.

Having thus described myv invention, what I claim as new, and desire to secure by Letters Patent, is:

1. A. loom comprising a frame, cutting mechanism supported from the frame with its field of action beneath the selvage of the cloth and forward of the fell and operating in a plane at an angle to the vertical andfrom a. moving part of the loom whereby filling ends depending from the selvage are severed.

2. A loom comprising. a frame, a lay, outwith its field of action beneath the salvage of the cloth and forward of the fell and operating in a plane at an angle to the vertie .cal and means foroperating said cutting 12c means for operating said cutting mechanism ting mechanism supported from the frame I rat 7 mechanism mechanism by or through the beat up of the lay whereby filling ends depending from the selvage are severed.

3. A loom comprising a frame, cuttmg mechanism supported from the frame with its field of action in a plane-extending beneath and parallel to the path of the cloth at the selvage and forward of the fell and means for operating said. cutting mechanism from a moving part of the loom whereby the filling ends depending from the selvage are severed. f

4. A loom comprising the construction defined in claim 1. together with guiding means supported from the frame and acting to maintain the cloth at the selvage in .prescribed relation to the cutting mechanism.

5. A loom comprising a frame, cutting mechanismcomprising a fixed and a movable blade, the fixed blade being supported from the frame with its cutting edge adj acent to and below the path of the cloth at the selvage forward of the fell, the movable blade cooperating with the fixed blade in a plane extending beneath the cloth, and means for opening and closing the movable blade with respect to the fixed blade whereby depending filling ends as they are brought by the weaving operation between Said blades are severed close to the selvage.

6. A loom comprising a frame, cutting comprising a fixed anda movable blade, the fixed blade being supported from the framejwith its cutting edge adjacent to and below the path of the cloth at the selvage forward of the fell, the movable blade being pivoted to the fixed blade with the cooperating cutting edges extended rearwardly, and means for swinging the movable blade upon its pivot during the operation of the loom whereby depending fillmg ends as they are brought by the weavv ing operation between said blades are severed close to the edges.

7. A loom comprising the construction defined in claim 6 together with a guiding member secured to and slightly spaced from the movable blade guide and position the interposed selvage with respect to the line of cut.

8. A loom comprising a frame, a lay, a temple stand mounted on the frame, a temple movably mounted on the temple stand and-having a heel acting when struck by the lay upon the beat up, to move the temple forwardly. cutting mechanism' supported and acting therewith to from the frame with its field of action beneath the selvage of the cloth and forward of the fell, and an actuating connection between the cutting mechanism and the temple acting upon the forward movement of the temple to operate the cutting mechanism whereby filling'ends depending from the selvage are severed.

9. A- loom comprising a frame, cutting mechanism supported from the frame and having two fields of action, one beneath the selvage of the cloth and one above the selvage of the cloth and both forward of the fell, and means for operating said cutting mechanism from a moving part of the loom whereby filling ends depending from the selvage and filling ends extending above the selvageare severed.

10. A loom comprising a frame, cut-ting mechanism comprising a fixed blade supported from the frame and extending rearwardly adjacent the selvage and having a cutting edge adjacent to and above and a a second cutting edge adjacent to and below the path of the cloth at the selvage forward and the fixed blade whereby filling ends proecting from the selvage as they are brought by the weaving operation between said blades are severed close to the selvage. I

11. A loom comprising the construction defined in claim 10 in which the pair of movable blades are pivoted to the fixed blade and operate in parallel panes.

12. A loom comprising the construction defined in claim 10 in which the pair of movable blades are hook-shaped.

13. A loom comprising the construction defined in claim 10 in which the pair of movable blades are connected at their outer ends by aspacer member of substantially the thickness of the fixed blade, and in which the movable blades straddle the fixed blade, are pivoted thereto by'a single 'pivot, and extend in parallel planes above and below the cloth forming a guide therefor.

In testimony whereof, I have signed my name to this specification.

HARRY T. ABBOTT.

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