US2527054A

US2527054A - Nose board for axminster looms

Info

Publication number: US2527054A
Application number: US53347A
Authority: US
Inventors: William A Blanchard
Original assignee: Crompton and Knowles Corp
Current assignee: Crompton and Knowles Corp
Priority date: 1948-10-07
Filing date: 1948-10-07
Publication date: 1950-10-24
Anticipated expiration: 1967-10-24

Description

Oct. 24, 1950 w. A. BLANCHARD 2,527,054

NOSE BOARD FOR AXMINSTER LOOMS Filed Oct. 7, 1948 INVENTOR WILLIAM ABLANCHARD.

6m. FM

ATTORNEY.

Patented Oct. 24, 1950 NOSE BOARD FOR AXMINSTER LOOMS William A. Blanchard, Millbury, 'Mass assignor to Crompton & Knowles Loom Works, Worcester, Mass, a corporation of Massachusetts Application October '7, 1948, Serial No. 53,347

11 Claims.

This invention relates to improvements in nose boards for Axminster looms and it is the general object of the invention to provide a nose board having laminations which are bonded together, as by copper or silver brazing, and are so related as to provide slots to receive the dents of the loom reed and also provide tuft yarn guiding teeth or noses.

A form of Axminster loom which has gone into general use employs a nose board having a plurality of rearwardly extending hook shaped teeth spaced from each other to define slots which receive reed dents and isepara'tor plates forming part of a yarn controlling mechanism of the loom. In the past these nose boards have consisted of aligned units each made of a single piece of metal and their manufacture has been very expensive because of breakage of the thin saws which cut the slots and the timerequired for the slot cutting operation.

It is an important object of the present invention to reduce the cost of the nose board unit and the time required for its manufacture by bonding together a series of flat metallic hook or nose plates alternating with fiat metallic spacer plates. The latter are shorter than the nose plates to provide the slots required for the reed dents.

It is another objectof the invention to provide an improved method of making the nose board wherein fiat nose and spacer plates are arranged parallel to each. other and alternately on one or more rods or bolts which extend transversely through the plates. These rods extend beyond the group of plates and carry nuts which permit forcing of the assembled. plates against each other in the relative positions they will ultimately occupy in the loom. .When thus assembled the nose and spacer plates arebonded to each other and to the rods by a brazing. operation in a furnace. nuts-thereon are then removed sothe nose board will have smooth flat end surfaces, thus permitting several boards to be arranged close to each other end to end on the loom.-

will appear as the description proceeds, the invention resides in the combination and arrangement of parts hereinafter described and set forth.

In the accompanying drawings, wherein a convenient embodiment of the invention is set forth,

Fig. 1 is a side elevation of part of an Axminster loom having the invention applied thereto,

The extending ends of the rods and the v With these and other objects in view which warp sheds.

certain parts of the loom being shown in section, V Fig. 2 is an enlarged plan view looking in the direction of arrow 2 showing one of thenose board units, parts of the latter being broken away, 7 Figs. 3 and 4 are enlarged vertical transverse sections on

lines

33 and 4 4, respectively, Fig. 2, I

Fig. 5 is an enlarged vertical section on line 5-5, Fi 2, H Fig. 6 is a diagrammatic view showing the relation of one nose plate and one spacer plate relatively to one of the connector rods and the tuft yarn guiding plates of the loom, 1

Fig. '7 and 8 are perspective views, respectively, of the nose and spacer plates or members, and

Fig. 9 is a plan view of the nose board unit as it appears after the bonding operation.

Referring particularly to Fig. 1, the m frame 10 has a breast beam H over which thefabric F passes towarda take-up mechanism not shown. The warp threads W pass through harness frames 12 and through a reed R having reed dents l3 and carried by the lay Hi. Mounted in front of thelay is a set of tuft yarn guide plates l5 movable about an axis it by a cam controlled rod I'I. These guide plates are normally in a forward position to the left of that shown in Fig. 1, but are projected rearwardly so that they can align with the reed dents :3 of the reed during a tuft forming operation.

rived from a tube frame it which is controlled in usual manner to dip the yarns through the A needle 59 lays a shot of weft behind the yarnsY and the reed then beats this shot and the tuft yarns forwardly over the rear part of a nose board designated generally at N. In practice, the nose board is made of a number of aligned nose board units extending across the loom and held in place as described hereinafter.

The matter thus far described, except for the details of the nose board N, are usual as to their construction and operation and may be as set forth in prior Patent No. 1,958,129 issued to Dacey and Robertson.

number of fiat plates assembled side by side and then preferably bonded together in a cooper or silver brazing operation.

In carrying the invention into effect there are provided a number of nose plates 25 and spacer or separator plates 26. Referring particularly to Fig. '7, each nose plate is made of flat sheet metal, such as steel, and has a straight top edge 30 along which the fabric F travels when the nose board is placed in the loom. At the rear of the nose plate 25 there is formed an upstanding hook 3| the rear part of which leads to a curved surface 32 along which a tuft yarn will be drawn during the tuft forming operation. Curved surface 32 is on a nose 33 shaped substantially as shown in Fig. 7, and the rear under edge 34 of the plate 25 is inclined downwardly and forwardly to a vertical shoulder 35 located at the right of a straight under edge 35 which may be parallel to the top edge 30. From a second shoulder 31 at the left end of the bottom edge 36 an inclined edge 38 leads upwardly and forwardly. As shown in Fig. 7 the nose plate 25 has relatively wide front and

back parts

39 and 46, respectively. The forward wide part 39 has a perforation 4| therein while the rear wide part 40 is provided with a similar perforation 42. A relatively narrow part or section 43 of plate 25 is located between the

wide parts

39 and 46 over a downwardly opening notch 44 between the

shoulders

35 and 31. All of the nose plates 25 required for a unit will be alike and substantially as shown in Fig. '7.

Each flat spacer or separator plate 26, see Fig. 8, has a top edge 45 similar to top edges 36 of the nose plates. The spacer plate has a bottom edge 46 corresponding to the bottom edge 36 of the nose board. The spacer plate 26 is provided with a rear widened part 41 the bottom of which is inclined forwardly and downwardly as at 48. The front or left end of the spacer plate as viewed in Fig. 8 is provided with a second widened part 49 having a forwardly and upwardly inclined bottom edge 50. The front wide part 49 is provided with a perforation while the rear widened part 41 is provided with a second perforation 52. An intermediate section 53 and notch 54 of the spacer plate are similar to section 43 and notch 44 of the nose plate.

The distance between the perforations 4| and 42 of a nose plate 25 is the same as the distance between the perforations 5| and 52 of a spacer plate, and these perforations are both at the same distance below the top edges of their corresponding plates, so that when the front perforations 4| and 5| are aligned and the

rear perforations

42 and 52 are aligned the top edges 30 and 45, and the bottom edges 36 and 46, and also the bottom edges 38 and 50 will align. The under edge 48 of each spacer plate, however, will preferably be parallel to but at a higher level than the corresponding inclined under edges 34 of the adjacent nose plates, and the rear end 55 of each spacer plate will be located considerably forward of the hooks 3| and noses 33. This latter relationship is shown in Fig. 6. The reason for having the inclined bottom edge 48 at a higher level than that of the edge 34 is to provide a slot 56 for a guide plate I5.

In order to facilitate movement of the guide plates l5 the under forward curved edge 51 of the nose 33 ma be beveled or chamfered as at 58. This chamfering will be located on a part of the nose plate 25 which is not overlapped by the spacer plate 26 when the latter is aligned with the nose plate as already described. The chamfered edge 58 may be formed either at the same time the nose plate 25 is punched out, or formed in a subsequent operation.

After the requisite number of nose and spacer plates for a unit U have been provided they will be assembled in alternation in side by side order with their corresponding front and back perforations aligned. An elongated preferably steel member 60, which may be formed as a rod, is passed through aligned holes 4| and 5| and have its screw threaded ends 6| project beyond the sides of the group of nose and spacer plates. A similar rod 62 is then passed through the aligned

perforations

42 and 52. Each of the

rods

60 and 62 will have nuts or the like 63 threaded onto the projecting ends thereof, and the nuts will then be tightened so that the

plates

25 and 25 will be forced into close contact with each other.

When thus assembled the parts of the unit are bonded together in a furnace by a brazing metal, such as copper or silver, or similar metal. The brazing metal is placed over the top of the assembled plates and as it melts it passes down between the plates and around the rods, forming a metallic bond designated at 65 in Figs. 3 and 4. The bonding metal not only unites adjacent surfaces of the plates to each other, but also establishes firm holding connection between the rods 66 and 62 and the plates through which they pass. In order that the bonding between the rods and the plates may be strong the rods should have a close fit with the perforations in the plates.

During the brazing operation the nuts 63 are likely to be bonded to the adjacent plates engaging them. After the brazing operation has been completed and the unit has cooled to room temperature the projecting ends 6| of the rods and the nuts on them will be removed so that the ends of the unit will have smooth fiat sLu'faces, thus permitting several nose board units to be arranged side by side in close order on the loom.

When the nose board is made as set forth herein the hooks 3| and noses 33 will project rearwardly beyond the rear ends 55 of the spacer plates to define slots 16 for the reception of the reed dents l3 and guide plates l5. If there is any distortion of the unit due to the heating operation this can be corrected in a straightening press to align all of the noses 33 before the unit is put in the loom. Also, if it is desired that the plate have a perfectly smooth top surface to engage the under part of the fabric F the upper edges 36 and 45 and any brazing metal present may be removed in a grinding or similar operation. When the proper amount of brazing metal is used there will be no excess of it present on the surface of the unit, or in the slots 56, but if such excess should exist it can be readily removed.

Either before or after removal of the nuts 62 and 63, but after the brazing or bonding operation the nose plate will have drilled vertically therethrough holes 1| counterbored at 12 to receive holding screws or bolts 13 which are tapped into the breast beam H, see Fig. l. The holes 1| will ordinarily be of a diameter greater than the width of either a nose or spacer plate and will out certain of the plates into front and rear parts which will. however, be held in fixed position by the bonding metal. As shown in Fig. 9 the holes 1| are located between the metal rods 66 and 62 and do not sever the latter. The holes are preferably located between the front and rear widened parts of the nose and spacer plates, and will ordinarily extend through that part of the nose plate intermediate the

shoulders

35 and 31 of the nose plates. The nose board is also provided with a perforation to receive a placing pin (not shown) on the breast beam. Perforation is about the diameter of holes or perforations H and will be drilled after the bonding operation.

It has been found that a nose board made as set forth hereinbefore will have its noses 33 and the spaces 10 between them accurately spaced without requiring any substantial straightening operation subsequent to the brazing. If the plate is to be used in an Axminster loom weaving seven tufts to the inch measured across the loom, the spaces or slots 10 will need to be separated from each other by and this spacing is attained by selecting the correct thicknesses for the nose and spacer plates.

From the foregoing it will be seen that the invention sets forth a nose board comprising two types of plates which are strung in alternation on rods or the like 60 and 62. The nose board has its component parts bonded together by a brazing metal which not only unites adjacent faces of the nose and spacer plates, but also unites the latter to the rods. It will further be seen that the lower edges 48 of the spacer plates are at a higher level than are the edges 34 of the nose plates, the purpose of this relation being to define guide slots 56 for the tops of the guide plates IS. The invention also sets forth a method for making the nose board wherein the nose and spacer plates are assembled on the rods and forced together by clamp means, such as nuts 63, and then submitted to a brazing operation,-after which the nuts on the rods and those parts of the latter which project beyond the ends of the nose board unit are removed. During the heating operation the plates and 26 are held together by the rods as a self supporting unit not reouiring holding fixtures or the like. The perforations H and. 15 are dr lled after the brazing operation, and even thou h certain of the nose and spacer plates are cut in two arts the latter will be held by the bonding. The Axminster nose plate as set forth herein is very much cheaper than nose plates heretofore produced, and when the brazing and sub eouent cooling o erations are properly carried out there is little or no distortion of the noses 33, and with but few inexpensive finishing operations the nose board can be placed in a loom as it is taken from the furnace.

Having thus described the invention it will be seen that changes and modifications of the foregoing specific disclosure may be made without departing from the spirit and scope of the invention.

What is claimed as new is:

1. In a nose board for an Axminster loom, a plurality of fiat parallel nose plates each having a tuft yarn guiding nose at the rear end thereof, a plurality of fiat parallel spacer plates, said plates arranged side by side and the nose plates alternating with the spacer plates, the rear ends of the spacer plates terminating forward of the noses of the nose plates, and means holding said plates in fixed position relatively to each other.

2. In a nose board for an Axminster loom, a plurality of fiat parallel nose plates each having a tuft yarn guiding nose at the rear end thereof, a plurality of fiat parallel spacer plates, said plates arranged side by side and the nose plates alternating with the spacer plates, the rear ends of the spacer plates terminating forward of noses of the nose plates, and means including an elongated member transverse of said plates holding the latter in fixed position relatively to each other.

3. In a nose board for an Axminster loom provided with reeddents, a plurality of metallic parallel flat nose plates alternating with metallic parallel flat spacer plates, the nose plates projecting beyond the spacer plates and the latter spacing the nose plates to define slots to receive the reed dents, and elongated metallic means extending transversely of said nose and spacer plates, the nose and spacer plates being secured to each other and to the elongated means by a bonding metal.

4. In a nose board unit for an Axminster loom, a plurality of fiat parallel nose plates each provided at the rear end thereof with a hook and a tuft yarn engaging nose, a plurality of parallel spacer plates alternating with the nose plates and the rear ends of which terminate forward of the hooks and noses of said nose plates, elongated means extending transversely through said nose and spacer plates aligning said plates to form the nose board unit, and means holding said nose and spacer plates and elongated means in fixed position with respect to each other.

5. In a nose board for an Axminster loom, a plurality of fiat steel plates each formed with a tuft yarn engaging nose at the rear end thereof, a plurality of fiat steel spacer plates alternating with the nose plates, elongated steel means extending transversely through said nose and spacer plates and holding the spacer plates in such position that the rear ends thereof are forward of the noses of the nose plates, and a bonding metal securing said nose and spacer plates to each other and to said elongated steel means to hold all parts of the nose board in rigid position with respect to each other.

6. In a nose board for an Axminster loom provided with reed dents and a set of spaced tuft yarn guide plates, a plurality of fiat nose plates each having at the rear end thereof a tuft yarn engaging nose, a plurality of flat spacer plates alternating with the nose plates, the rear ends of the spacer plates terminating forward of the.

noses of the nose plates, both the nose and spacer plates having bottom edges which are inclined downwardly and forwardly from the rear ends thereof, the inclined bottom edges of the nose plates projecting below the bottom inclined edges of the spacer plates to define guide slots for said tuft yarn guiding plates, elongated means extending transversely of said nose and spacer plates, and means holding said nose and spacer plates and elongated means in fixed relation with respect to each other with the rear ends of the nose plates spaced from each other rearwardly of the spacer plates to form slots for said reed dents.

7. In a nose board for an Axminster loom provided with reed dents and yarn guiding plates, a plurality of fiat nose plates each provided at the rear end thereof with a hook and a tuft yarn engaging nose, each nose plate having a bottom edge inclined downwardly and forwardly from the nose thereof, a plurality of fiat spacer plates alternating with the nose plates, each spacer plate having the rear end thereof terminating forward of the hooks and noses of adjacent nose plates, and each spacer plate having a lower edge inclined downwardly and forwardly from the rear end thereof above said inclined bottom edges of the nose plates to define guide slots for said yarn guiding plates, and means holding said plates in fixed relation with respect to each 7 other with the rear ends of the nose plates projecting rearwardly of the spacer plates and separated by slots to receive said reed dents.

8. In a nose board for an Axrninster loom provided with a set of tuft yarn guiding plates and a reed having dents, a plurality of flat metallic nose plates each provided at the rear end thereof with a hook and a yarn engaging nose, a plurality of flat metallic spacer plates alternating with said nose plates and having their rear ends terminating forward of the hooks and noses of the nose plates, the lower edges of the nose plates projecting below the lower edges of the spacer plates to define guide slots for said tuft yarn guiding plates, elongated metallic means extending transversely of said nose and spacer plates to align the latter, and a bonding metal securing the nose and spacer plates to each other and to said elongated metallic means with the rear ends of the nose plates projecting rearwardly beyond the rear ends of the spacer plates to define slots for said reed dents.

9. In a nose board for an Axniinster loom having a breast beam and reed dents, a plurality of flat metallic nose plates the rear end of each of which is formed with a tuft yarn engaging nose, a plurality of flat metallic spacer plates alternating with the nose plates and having the rear ends thereof terminating forward of said noses, elongated metallic members extending transversely of said nose and spacer plates, and a bonding metal securing said nose and spacer plates to each other and to said elongated metallic members, said nose board having perforations therethrough parallel to said plates to receive means for attachment thereof to said breast beam, said perforations measured laterally of the plates being wider than the width of either a spacer or a nose plate, said bonding metal holding those parts of the nose and spacer plates which are in front of and behind said perforations in fixed position relativel; to the nose board.

10. In a nose board for an Axminster loom hav ing a breast beam and reed dents, a plurality of fiat metallic nose plates the rear end of each of which is formed with a tuft yarn engaging nose, a plurality of flat metallic spacer plates alternating with the nose plates and having their rear ends terminating forward of said noses, elongated metallic members spaced from each other in the direction of the length of said plates and extending transversely of said nose and spacer plates, and a bonding metal securing said nose and spacer plates to each other and to said elongated metallic means, said nose board having perforations therethrough parallel to said plates to receive means for attachment thereof to said breast beam, said perforations measured lateral- 1y of the plates being wider than the width of either a spacer or a nose plate and said perforations extending through the nose board at some part of the latter other than the parts thereof through which the elongated metallic members extend, said bonding metal holding those parts of the nose and spacer plates which are in front of and behind said perforations in fixed position relativel to the nose board.

11. In a nose board for an Axminster loom having a breast beam and reed dents, a plurality of flat metallic nose plates the rear end of each of which is formed with a tuft yarn engaging nose, a plurality of fiat metallic spacer plates alternating with and in side by side engagement with the nose plates and having their rear ends terminating forward of said noses, elongated metallic members spaced from each other in the direction of the length of said plates and extending transversely of said nose and spacer plates, and a bonding metal securing said nose and spacer plates to each other and to said elongated metallic members, said nose board having perforations therethrough spaced from said elongated members to receive means for attachment of the nose board to said breast beam.

WILLIAM A. BLANCHARD.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 2,224,592 Brown Dec. 10, 19 .0 2,280,931 Schuh Apr. 28, 1912 2,293,561 Robb Aug. 18, 1242 2,458,427 Russell et .al. Jan. 4, 1949