US2226279A

US2226279A - Loom temple

Info

Publication number: US2226279A
Application number: US302745A
Authority: US
Inventors: William H Bahan
Original assignee: Individual
Current assignee: Individual
Priority date: 1939-11-03
Filing date: 1939-11-03
Publication date: 1940-12-24
Anticipated expiration: 1957-12-24

Description

Patented Dec. 24, 1940 PATENT; OFFICE l y. -LOOMTEMPLEM y' l g Wiiliam uahan, Greenville, s. C.. f Application Novembers, 1939, serial 1510.302345 x "2 'oiaimsg (ora lapsos) This invention relatesto a loom temple and ter for clipping the'loose'ends of the warp thread y at a'point adjacent the selva-ge; This thread cutter operates upon each pick lof the loom, but it is'only when a transferof a bobbin vis effected that a loose end is vpresent for the cutter `to shear. The conventional thread cutter is positioned in the .temple head solas' tohave reciprocatory movement, with the bottom of the'cutter slidably engaging a very narrow bearing surfaceon-the bottom of the temple head; The thread engaging points or prongsassoc'ated with.each cutter normally project forwardly beyond the confines of the head to a thread engaging position... When the thread isr tobe sheared, ofcourse, .thepoints are withdrawn within the temple head. yIn order to provide a compact assembly, these` prongs-are notched so that the necessary clearance between f the temple roll pin-and theiprongsis present. Also the foremostextremitiesof the lprongs, barely clear the bottom of thev temple head whenjthe thread cutter is in retracted position. As a result of the combined above-named features, the bearing surface of the threadl cuttersoon becomesA worn,. resulting yinA the notched portion,v von .the free ends of the thread cutterv engagin'gthevtopl of ther temple roll pin and severing orhpartially severing it. At thev same time,u the lower` ends of the thread cutter are allowed' to dig` intozthe upper surface of thebottorn piece, Whichj action often results in .ineicient operationas well-as frequent breakage and replacement. ofpart's.

It is therefore van object of this invention,A to

provide a supplementary bearing` surface forca.y

It is another object of this. inventionv to provide.. an, apparatus .of the class described having means for adjusting the lowermstposition .to which the free end of the thread cutter canmove.

It is a further-object of. this invention to proa vide a novel thread cutter comprising a lay en, gagingporton having a pair of thread engaging points secured to one end thereof,y whichPOints.

j are formed frorn a U-shaped pl'atewhich"inturn` partiallyencircles theexterior of oneend of the lay engaging member. y This method of constructing the thread cutter hasa decided advantage A`be. cause the U-shaped points are now Aconstructedy in one piece insteadr of two as has been previouslyv associated therewith;

the case. Also byproviding the'U-shaped points, the three sidesof the lay engaging member are encircled and therefore only one rivet is Ilecessaryy forsecuringthepointsfto. the lay engaging member.

Some of. the-objects-of theinvention having been stated, other objects will appear as the rdescription proceedsvwhen taken in connection with the accompanying drawings, in which- Figure 1 is a planview of a temple head showing a fabric engaged thereby and my invention Figure .-2' is an elevation looking at of Figure 1;

Figure 3 isV a vertical sectionalview taken along theline 3-3 in Figure 1, but showing the thread cutter in retracted position;

Figure 4 is ari-isometric view of the supplemen-v tary bearing bracket which is used in conjunction with the thread-cutter;

Figure 5 is an isometric view looking at the opposite side of the supplementary bearingbracket from thatA shown in Figure 4;

4Figure 6 is a top plan view of a temple head showing a slightly modified form of the invention; Figure '7 is anl elevation looking Vat the near side of Figure 6; l

l `Figure-8 is "anfexplod'ed' `isometric viewvof the supplementary bearing and adjusting brackets apart from the temple head; f

Figure 9' is an isometric view'of the' thread cutterV which 'is-'employed in connection with 'the temple head; y

Y Figure 10 is an inverted exploded isometric view of the thread cutter parts;

Referring more specifically to the drawings, the numeral I0 denotes a'temple bar having integral therewith 'a lower temple heady piece II towhich is 'secured a top temple head piece I2 by any suitable ir'leans 'such as a bolt I4. A temple roll I5 is Arotatably confined between themembers II and I2 by'A any suitable means such as temple roll pins I6 and I1. grip the selvagevof the cloth and effect theproper transverse tension during weaving. It is seen thatthe cloth comprises warprthreadsfl, lling upon a transfer, there vwill be quite a fewy picks the near side This temple roll serves to l between cutting operations. Neverthelessdue to V the reciprocation of the lay, the threadcutteris.

maintained in constant operation, which results in wear between the lower side thereof and the upper side of the bottom temple piece In this invention a supplementary bearing surface is provided so as to reduce to a minimum the amount of wear that takes place. Between the bottom portion and the top portion |2, a thread cutter 2| is adapted to reciprocate, said thread cutter having a downwardly extending` portion 22 which is engaged by the lay of the loom upon each pick, and a horizontally projecting portion 23, the lower side of which is adapted to slidably contact bearing portion 24 of supplementary bearing bracket 25. This bearing member 25 has a hole 26 therein which is penetrated by the temple roll pin I6. Also a set screw 21 is `provided in the vertical sidewall of the member 25 in such a position that its end can be forced into contact with the exterior of the temple head to hold the portion 24 adjusted at the desired elevation. It is preferable to form a member 25 out of a case-hardened material in order to eliminate as much wear as possible. Figure 3 shows plainly the amount of added bearing surface which is given to the lower edge of portion 23 of the thread cutter. In the conventional loom temples, the slot 28 as shown in this figure is always present, leaving a very short supporting surface when the cutter is in retracted position.

The free end of the thread cutter 2| has a pair of

points

29 and 30 secured thereto by any suitable means such as a rivet 3|. Figures 9 and 10 show the detailed structure of these points and their associated parts. It is here seen that the points are made of one piece of plate material which is bent in a substantially U-shaped manner and having a connecting bridge 33 between parallel walls. This bridge portion 33 fits into a notch 34 cut in the end of portion 23 whereas the adjacent wall portions of the bridge member 33 fits against the opposed sides of portion 23 so that the outer Vsurfaces of member 23 and

portions

29 and 30 will be flush. The points 29 and have holes 31 therein which coincide with hole 38 in the end of portion 23, said holes being penetrated by the rivet 3| heretofore described. In order to provide the necessary clearance between the

points

29 and 30 and the temple roll pin I6, a suitable notch 40 is cut in the lower sides of the points.

When the thread cutter is installed in the manner shown in Figures l, 2 and 3, a suitable torsion spring 4| is provided said spring having one end thereof encircling a pin 42 and its other end encircling a pin 43 on portion 22 of the thread cutter. This spring is adapted to normally force the ends of

points

29 and 30 to an extended position (Figure 2) beyond the connes of the temple head. As the lay engages the downwardly projectingY portion 22, the

prongs

29 and 30 are withdrawn to the interior of the temple head from the position shown in Figure 2 to the position shown in Figure 3. AIt is here seen that theprongs are disposed upon each side of a suitable shearing knife 45 within the temple head. If upon a withdrawal, there is a thread engaged by the

points

29 and 30, it is immediately sheared.

It is therefore seen that the additional bearing surface provided by the portion 24 of supplementary bearing bracket 25 will decrease the wear between the bottom edge of portion 23 of the thread cutter and therefore prevent the

points

29 and 38 from cutting into the temple roll pin I6 or from engaging the upper surface .ters will be used to designate like parts.

of the bottom temple piece and causing breakage. As a rule the temple pieces and I2 are made of cast iron which wears very easily, so by providing a piece of hardened material as a supplementary bearing surface, the kamount of wear can be materially decreased.

Figures 6 and 7 show a slightly modified form of the invention in which like reference charac- In this form of the invention, a supporting bracket 48 is provided, which is very similar to the bracket 25, previously described. A slightly different form of adjusting means, however, is provided. The bracket 48 has a portion 49 integral therewith which serves as a bearing surface in the same `manner that the portion 24 in the preceding form serves. A hole 58 is disposed in member 48 which is penetrated by the temple roll pin I6 to secure the same to the temple head. In-order to provide an effective means for adjusting the height of the bearing portion 49, an elongated rectangularslot 5| s provided which slot is penetrated by projection 52 of U-shaped member 53. This U-shaped member has another projection 54 integral therewith and parallel to the projection 52. A slot 55 is provided in the projection 54 which ts over the bolt 4a. This bolt |4a is also used for securing the top temple piece l2 to thebottom portion A nut 58 is employed for holding the portions and |2 together whereas another nut 59 is threadably secured on the upper end of bolt |411 to securely hold the bracket 53 on the bolt |4a. When it is desired to adjust the elevation of the member 53 and thereby fix the lowermost position to which the

points

29 and 30 can move during the beat up stroke of the loom lay, it is only necessary to remove the nut 59 and place suitable shims or washers beneath the projection 54 and on top of the nut 58. Ihe purpose of providing a slot 55 is to allow the member 53 to be moved inwardly or away from the bracket 48 as in the case of installation or removal of this member.

In the drawings and specication, there has been set forth a preferred embodiment of the invention, and althoughl specific terms are employed, they are used in a generic and descriptive sense only, and not for purposes of limitation, the scope of the invention being set forth in the appended claims.

IA claim: y

1. In a loom temple having a raceway and a thread cutter mounted for reciprocatory movement therein, a wear plate secured to the temple and extending beneath the thread cutter for supporting the thread cutter in its movements, and a set screw mounted in the wear plate member and engaging the temple for allowing of adjusting vertically the position of the wear plate relative to the temple.

2. In a loom temple having a raceway and a thread cutter mounted for reciprocatory movement therein, a wear plate secured to the temple and extending beneath the thread cutter for supporting the thread cutter in its movements, a set screw mounted in the wear plate member and engaging the temple for adjusting vertically the position of. the wear plate relative to the temple, said thread cutter having the thread engaging portion thereon made of one piece and fitting over and secured to the proximateend of the other portion of the thread cutter.

WILLIAM H. BAHAN.