US3409054A

US3409054A - Filling positioner for terry loom

Info

Publication number: US3409054A
Application number: US585455A
Authority: US
Inventors: Bertrand E Guindon
Original assignee: HORACE L BOMAR
Current assignee: Draper Corp; HORACE L BOMAR
Priority date: 1966-10-10
Filing date: 1966-10-10
Publication date: 1968-11-05
Anticipated expiration: 1985-11-05

Description

Nov. 5, 1968 B. E. GUINDON 3,409,054

FILLING POSITIONER FOR TERRY LOOM Filed on. 10, 1956 2 Sheets-Sheet 1 1 N v E N T o R BERTRAND E.GumooN ATTORNEY Nov. 5, 1968 B. E. GUINDON FILLING POSITIONER FOR TERRY LOOM 2 Sheets-Sheet 2 Filed Oct. 10, 1966 l N V E N T o R BERTRANDEGUINDON ATTORNEY United States Patent FILLING POSITIONER FOR TERRY LOOM Bertrand E. Guindon, Cumberland, R.I., assignor, by

mesne assignments, to John Donald Marshall and Horace L. Bomar, as trustees of the Carolina Patent Development Trust Filed Oct. 10, 1966, Ser. No. 585,455

2 Claims. (Cl. 139-195) ABSTRACT OF THE DISCLOSURE Apparatus for restoring parallelism between the entire length of a loose pick of filling and the fell of a terry fabric. A camming needle is directed into the warp threads to urge the loose pick into position each time a pick is inserted and is removed from the warp threads as the lay advances.

This invention pertains to looms for weaving terry cloth and more particularly to improved mechanism for positioning the so-called loose picks into full parallel relationship with the terry fell prior to the loop-forming beat-up.

It is well understood in the art to weave terry in a series of picking cycles, whereby each cycle will include two or more loose picks followed by a fast pick, with all picks of the cycle being beat-up to the fell together. The portion of each of the warp yarns which separates the first loose pick of each new cycle and the fast pick of the previous cycle will form terry loops on one or both surfaces of the material.

The instant invention is concerned with the proper placement of the first loose pick of each cycle. If the first loose pick is attached to the previous fast pick at the side of the 100m from which it is being inserted, it will extend rearwardly from the fell at an angle thereto for a portion of the length. For best results in the finished goods, the angular portion should be properly positioned when inserted and also subsequently repositioned before the final beat-up of the cycle. The desired position for the first loose pick is that of being parallel with the fell throughout its full terry width.

In terry material which has been woven without having properly positioned the first loose pick, there is a noticeable defective band of approximately the width of the angular portion of the pick. This band may have loops of uneven heights and doubled loops which give an undesirable appearance to the goods. In the weaving of threepick or five-pick terry, for example, the defective hand many appear at both edges of the cloth in a fiy-shuttle loom and at the inserting edge in a shuttleless loom of the type which weaves picks in connected pairs. The instant invention is applicable to either type of loom for the production of high grade terry cloth.

It is the general object of this invention to devise a simplified means for aligning the first loose pick of each terry cycle in parallel relationship with the fell.

It is a further object of the invention to devise means for positioning a terry pick as it is inserted under tension and subsequently repositioning that same pick when the tension is relaxed.

It is a further object to provide a positioning means which may be inserted accurately into the shed immediately behind the fell to ensure positive contact with the first loose pick.

It is a still further object of the invention to devise a means for the purposes described which shall be inexpensive to manufacture and operate yet highly consistent in use.

It is also an object of this invention to devise a positioning means for filling which shall be easily adjustable for various terry weaving conditions.

These and other objects of the'invention will become apparent as further details are disclosed and by reference to a specific embodiment thereof as shown in the accompanying figures of drawing wherein:

FIG. 1 is a side elevation of the filling positioner with the known loom parts shown in dotted lines;

FIG. 2 is a plan view of FIG. 1;

FIG. 3 shows the mechanism of FIG. 1 as moved by the lay to a second position; and

FIG. 4 is an enlarged view in perspective of a portion of FIG. 2.

Now referring to the drawings, only those portions of the loom necessary to the operation of the invention and to its understanding are shown. A lay beam 20 is shown in its two extreme positions of oscillation in FIGS. 1 and 3, with a reed 21 and reed bracket 22 in a position relative to the lay 20 to execute a loose pick beat-up. A series of warp ends 23 held in angled separation to form a shed have a first loose pick of filling 24 inserted therein. The warp ends 23 are adapted to cross alternately in the usual manner by means not shown to thereby form a terry fabric 25 with the fell of the fabric at point 26 (FIGS. 1 and 3). As the fabric is woven it passes through a temple 27 on either side of the loom (only one shown), having temple rolls 28 and 29.

In weaving terry fabric it is well known to offset the reed 21 from the lay 20 a small distance (FIGS. 1 and 3) while effecting two or more partial beat-ups or loose picks. The reed is then returned to a normal position to make a full or fast beat-up whereby the picks of that particular cycle are packed up to the fell causing loops to be formed by the pile warp yarn. The first loose pick 24 of a cycle may in many cases be attached to the previous cycle of picks at the selvage 30 (FIG.2) so that when inserted it will extend at an angle to the fell 26. Unless the portion of the pick which lies at an angle is straightened, the loops formed along that band will not match those of the central portion and result in an undesirable condition.

A clamping member 31 is securely fastened to the face of the lay beam 20 by a screw 32. A connector rod 33 is pivotally fastened to the clamp 31 by a flexible rod end 34. The forwardly extending end of the rod 33 has a second rod end 35 pivotally fastened to a slide 36 which may be of a low-friction type material for longer wear. A bracket 37 is fastened to the temple 27 by screws 38 (FIGS. 1 and 2) and extends forwardly and upwardly by an arm 39. A slide track formed upon the arm 39 by

opposing grooves

40 and 41 receives the slide 36 and permits ony inclined straight line motion when urged by the action of the lay 20 through the linkage.

A rearwardly extending arm 42 is clamped to the slide 36 by'a screw 43 and is actuated thereby. The arm 42 carries a rod 44 adjustably positioned thereon by a set screw 45. A needle 46 is inserted through a pin hole in the rod 44 and locked in position by a set screw 47. The needle 46 is bent downwardly to a point 48 and has a straight filling contacting surface 49.

The reciprocating motion of the lay 20 will actuate the slide 36 and the needle 46 along parallel inclined planes. The needle 46 is positioned to have the point 48 enter the shed just behind the fell to insure contact with the first loose pick of each cycle. With the point 48 following a plane such as is shown by line AA in FIG. 3, it will be seen that the surface 49 will plow the filling 24 rearwardly as the needle 46 descends. FIGS. 1 and 2 show the needle 46 in the shed with the first loose pick 24 pressed away from the fell to a position where the reed will beat-up the full length of that pick. Prior to the beat-up, however, the needle is raised by action of the advancing lay beam 20, whereupon a portion of the pick 24 may revert to its former angular position. The condition is shown in FIG. 3 with the reed 21 advanced to the lose pick beat-up point and part of the pick 24 nearer the fell 26 than is desirable. When the lay 20 and reed 21 move back, the needle point 48 will again enter the shed and the surface 49 will re position the loose pick 24 as a second loose pick is inserted. The crossing of the warp yarn will now offer sufiicient resistance to hold the first loose pick in a parallel relationship with the fell throughout its full terry width.

The distance between the loose picks at partial beat-up and the tell is a major factor in the height of the terry loops. Adjustments may be easily. made by loosening the

set screws

45 and 47 to change the angle of the surface 49 relative to the plane of movement shown by line A-A. This invention provides a simplified device for accomplishing the desired results and one which may be easily adjusted for varying conditions.

While one embodiment of the invention has been disclosed, it is to be understood that the invention concept may be carried out in a number of ways. This invention is, therefore, not to be limited to the precise details described, but is intended to embrace all variations and modifications thereof falling within the spirit of the invention and the scope of the claims.

I claim:

1. In a loom for weaving terry material by inserting picks of filling into warp sheds in consecutive cycles, each one of the cycles having a plurality of loose picks followed by one fast pick, said loom including a reciprocating lay, a retractible reed operating in association with said lay, and a filling positioning means for placing the first loose pick in each of said cycles into parallel relationship with the fell of said material and repositioning said first loose pick into said parallel relationship during insertion of the second loose pick of each of said cycles, said positioning means including,

(a) linkage means fastened at one end to said lay,

(b) a slide member coupled to the other end of said linkage means andadapted to be reciprocated there- (c) a slide bracket for restricting said slide member to inclined straight line'motion and (d) a filling contacting member having-a rearwardly directed plow surface fixedlyjcarried by'said slide member for entering said warp sheds'and urging the first loose pick in each of said cycles rearwardly of the fell of said material, said filling contacting member being adapted to be removed from said warp sheds prior to each beat-up action by said reciprocating lay.

2. Mechanism as definedin claim 1 wherein said slide bracket includes a pair of slide grooves extending in a plane upwardly and forwardly of the fell of said material.

References Cited UNITED STATES PATENTS 1,657,429 1/1928 Brown 139-27 2,353,968 7/1944 Pedrazzo '139-25 2,645,250 7/1953 Moberg 139-25 2,700,400 1/1955 Roberts 139-195 3,079,955 3/1963 Moberg u 139-195 FOREIGN PATENTS 843,602 3/1939 France.

MERVIN STEIN, Primary Examiner.

JAMES KEE CHI, Assistant Examiner.