US3292663A

US3292663A - Looms for weaving carpets, especially axminster carpets

Info

Publication number: US3292663A
Application number: US435615A
Authority: US
Inventors: Bud Hans
Original assignee: English Numbering Machines Ltd
Current assignee: English Numbering Machines Ltd
Priority date: 1964-03-03
Filing date: 1965-02-26
Publication date: 1966-12-20
Anticipated expiration: 1983-12-20
Also published as: US3429008A

Description

H. BUD 3,292,663

LOOMS FOR WEAVING CARPETS, ESPECIALLY AXMINSTER CARPETS Dec. 20, 1966 I5 Sheets-Sheet 1 Filed Feb. 26, 1965 1 12 fij i l'dl Inventor v HAN: Bu]:

By ma 8 M Attorney:

LOOMS FOR wmvwa CARPETS, ESPECIALLY AXMINSTER CARPETS Filed Feb. 26, 1965 H. BUD

Dec. 20,1966

5 Sheets-Sheet 2 FIG. 7

FIG.9'

NVENTOR I HANS BUD ATTORNEYS v Hr BUD Dec. 20, 1966 LOOMS FOR WEAVING, CARPETS, ESPECIALLY AXMINSTER CARPETS 5 Sheets-Sheet :5

Filed Feb. 26, 1965 lnuen lor 1mm 4:0

By M15, 8

A Manley;

United States Patent 3 292,663. LOOMS FOR WEAVIISIG CARPETS, ESPECIALLY AXMINSTER CARPETS Hans Bud, London, England, assignor to English N mibering Machines Limited, Enfield, England, a British company Filed Feb. 26, 1965, Ser. No. 435,615 Claims priority, application Great Britain, Mar. 3, 1964, 8,842/ 64 4 Claims. (Cl. 139-10) The invention relates to tubes for use in looms for weaving carpets, especially Axminster carpets.

Axminster carpet looms have a carrier provided with a series of metal members formed by flat metal tubes, each tube being wider at one end than at the other, the wide end being sloped relative to the tube axis, and the tube wall near the wide end being slotted for facilitating fixing of the tubes to the carrier. As is known, in use of the looms, tufting yarns are threaded through the tubes.

It is an object of the invention to re-design such tubes so that they can be easily manufactured of plastic material and can be easily attached to and detached from a loom for weaving Axminster and other carpets.

It is another object of the invention to provide such tubes made of plastic material which can easily be moulded.

These and other objects and advantages will become apparent to those skilled in the art from the following detailed description of my invention when read with reference to the accompanying drawings, which are given by way of example and in which:

FIG. 1 shows in side elevation a plastics tube having flat side walls for use in a loom for weaving carpets;

FIGS. 2 to 6 show views taken in cross section along the lines II-II to VIVI, respectively, of FIG. 1;

FIG. 7 illustrates a section along the line VII--VII of FIG. 1; 7

FIG. 8 illustrates a perspective view of the tube of FIG. 1;

FIG. 9 illustrates, in section, a part of the tube of FIG. 1 held in a conventional tube carrier of a loom for weaving Axminster carpets;

FIG. 10 shows a side view taken in elevation of a modified form of the plastics tube having flat side walls; and

FIGS. 11 to 15 show views taken in cross-section along the lines XIXI to XV-XV, respectively, of FIG. 10.

The tube shown in FIGS. 1 to 8 is made of synthetic plastic material, and has two flat side walls 1 joined by a top wall 2 and a curved bottom 3, the bottom 3 being slightly inclined towards the top wall 2 along a part of the length of the tube. The top wall 2 is turned outwardly of the tube by a small amount at one end of the tube to form a lip 4, which serves to wedge the tube in position when the tube is mounted in a tube carrier 50 (FIG. 9) as described below.

Each of the side walls 1 is formed with a circular opening 5,. and a rectangular abutment 6 and an end abutment 7, the two abutments 7 being formed at an end 8 of the tube, this end 8 being the end of the tube at which the lip 4 is formed and being wider than the opposite end of the tube. As can be seen from FIG. 1, the wide end 8 is sloped relative to the axial direction of the tube. On each side wall 1, the abutment 6 has an abutment edge 9 spaced from an abutment edge 10 on the abutment 7, in the axial direction of the tube, by a distance a corresponding to the width of a bridge member 51 of the tube carrier 50 (FIG. 9) on which the tube is mounted when in use, as described below. The abutment edge 10 extends over the entire width of the corresponding side wall 1, and the abutment edge 9 extends only across a part of the width of this wall and forms one edge of the rectangular abutment 6, which slopes and merges with the flat wall 1 on the other three sides thereof.

The plastic tube shown in FIG. 10 is similar to that shown in FIG. 1 and the same reference numerals have accordingly been employed to indicate the same partsin both of these figures.

However, instead of the circular openings 5 shown in FIG. 1 the side walls of the tube shown in FIG. 10 are each formed with an opening 30 which is generally rectangular when viewed in elevation and the bottom of which is defined by a surface 31 (FIG. 12) which is inclined relative to the side wall 1 to facilitate removal of the tube from a mould for making the same. Also, instead of the abutment 6 of the tube shown in FIG. 1, the tube shown in FIG. 10 is formed with a smaller rectangular abutment 33 having :more gradually sloping

side walls

34 and 35 on two sides thereof. The abutment 33 has an abutment edge 36 extending across only part of the width of the tube, the abutment edge 36 being perpendicular to the axial direction of the tube and to the corresponding side wall 1, and the fourth side 37 of the abutment 33 is inclined to the corresponding side wall 1 but with a greater slope than the

side walls

34 and 35.

In use, the plastic tube is'inserted into a tube carrier '50 (FIG. 9) of an Axminster loom. Such tube carriers conventionally comprise a bridge member 51 provided with a plurality of slots for receiving the tubes. With the tubes shown in FIGS. 1 and 10, the

abutments

6 and 7 or 33 and 7 are spaced apart from each other in the axial direction of the tube by a distance a cor-responding to the width of the bridge member of the tube carrier so that said bridge member can enter the space between these abutments. The-lip 4 bears against, and is slightly resiliently deformed by, a part of the tube carrier, for example a spring member, for wedging the tube securely in position. The lip 4 also facilitates the entry of the yarn tufts into the tube.

The formation of the abutments on the flat walls of the plastic tubes by moulding provides a convenient and cheap Way of providing means on the tubes for securing the same to the bridge member and avoids any necessity for forming slots by a separate manufacturing step in walls of metal tubes as with hitherto usual. Moreover, the use of plastic tubes, which term as used throughout this specification embraces thermoplastics tubes and tubes of other mouldable synthetic materials, has the advantage that when in use in carpet looms the knives of such looms are less liable to be damaged by contact with the present plastics tubes than with the metal tubes previously employed. Such contact may accidently occur when damaged tubes fall from the tube carrier as the tuft yarn is fed through the tubes, or when the tube carriers are not properly gripped or located at the weaving station. Replacing the knives necessitates halting production on the looms, and regrinding of the knives is an expensive process. It is therefore advantageous to reduce damage of the knives to a minimum.

Plastic tubes are also less liable to damage the tuft yarn or to be damaged while being threaded with the tuft yarn, and in transport and handling between such threading operations and mounting of the tubes on the looms. When metal tubes are used, such damage can cause sharp external or internal edges on the tubes. The external sharp edges tend to cut the threads which form the bases of the carpets, while the internal sharp edges may cut the yarn which passes through the tubes, both of which can cause stoppage of the looms. Also, plastics tubes do not corrode.

It should be clearly understood that the specific embodiments described and illustrated are given merely by way of example and that many modifications, omissions and additions are possible without departing from the spirit of the invention.

I claim:

1. A plastic tube for use in carpet looms, comprising two generally flat side walls and four abutments projecting from said side walls, two of said abutments being proyided on one of said flat walls and the other two of said abutments being provided on the other one of said flat Walls, the said two abutments of each wall being spaced apart from each other in the axial direction of the tube by a distance substantially corresponding in Width to a bridge member of a tube carrier so that said bridge mem- 4. A tube as defined in claim 3, wherein one of said ber can enter the space between said two abutments of each of said side walls, said tube being wider at one end than at the other end, the wider end of said tube being sloped relative to the axial direction of said tube, the said abutments being provided at the wider end of said tube.

2. A plastic tube as defined in claim 1, and comprising a lip extending outwardly of the tube at the wider end thereof.

3. A tube as defined in claim 1, wherein said four abutments each have an abutment edge perpendicular to said axial direction.

entire width of said flat wall, the other abutment edge extending only across a part of the width of said flat wall and forming an edge of a rectangle which slopes and merges into the flat wall at opposite sides of said abutment.

References Cited by the Examiner UNITED STATES PATENTS 1,329,302 1/1920 Lea 13910 1,621,453 3/1927 BiX-by 13910 2,608,215 8/1952 Robb 13910 2,806,252 9/1957 Bishop 1826 FOREIGN PATENTS 178,228 4/ 1922 Great Britain.

'MERVIN STEIN, Primary Examiner.

20 H. S. JAUDON, Assistant Examiner.

Claims

1. A PLASTIC TUBE FOR USE IN CARPET LOOMS, COMPRISING TWO GENERALLY FLAT SIDE WALLS AND FOUR ABUTMENTS PROJECTING FROM SAID SIDE WALLS, TWO OF SAID ABUTMENTS BEING PROVIDED ON ONE OF SAID FLAT WALLS AND THE OTHER TWO OF SAID ABUTMENTS BEING PROVIDED ON THE OTHER ONE OF SAID FLAT WALLS, THE SAID TWO ABUTMENTS OF EACH WALL BEING SPACED APART FROM EACH OTHER IN THE AXIAL DIRECTION OF THE TUBE BY A DISTANCE SUBSTANTIALLY CORRESPONDING IN WIDTH TO A BRIDGE MEMBER OF A TUBE CARRIER SO THAT SAID BRIDGE MEMBER CAN ENTER THE SPACE BETWEEN SAID TWO ABUTMENTS OF EACH OF SAID SIDE WALLS, SAID TUBE BEING WIDER AT ONE END THAN AT THE OTHER END, THE WIDER END OF SAID TUBE BEING