US1811008A - Cross wire carpet loom - Google Patents

Description

June 23, 1931. w HALL I CROSS WIRE CARPET. LOOM Filed Feb. 17, 1930 2 Sheets-Sheet June 23, 1931. w H

CROSS WIRE CARPET LOOM Filed Feb. 17, 1930 2 Sheets-Sheet 2 mum.

25 bodying one form of my invention;

1 Fig. 4 is a view similar to Fig. 2

Patented June 23, 1931 UNITED STATES PATENT OFFICE WALTER HALL, OF WORCESTER, MASSACHUSETTS, ASSIGNOR TO M. J. WHITTALL AS- SOCIATES, OF WORCESTER, MASSACHUSETTS, A VOLUNTARY ASSOCIATION OF MAS- SACHUSETTS cross wine canrnr 1.00M

Application filer. February 17, 1930. Serial No. 423,893.

This invention relates to a 100m for weaving Wilton or similar carpets, in which the pile is formed on transversely extending cross wires. When a pile of more than average 5 height is formed in such a carpet, the pile warps cross so far at the rear of the fell of the cloth that the filling thread when beaten up formsloops at the selvage which are quite objectionable in the finished fabric.

It is the object of my invention to provide mechanism by which a firm and satisfactory selvage is assured regardless of the height of the pile.

More specifically,.I provide a device by which the selvage pile warps are depressed at the rear of the pile wire and closely adjacent thereto.

My invention further relates to arrangements andcombinations of parts which will be hereinafterdescribed and more particularly pointed outin the appended claims.

Two forms of my invention are shown in the drawings, in which 7 v Fig. 1 is a plan view of parts of a loom em- Fig. 2 is a side elevation thereof with certain .parts shown in section;

Fig. 3 is a rear elevation, looking in the direction of the arrowS in Fig. 2;

but showing the parts in adiiferentposition;

Fig. 5 is a detail left hand sideelevation of certain parts;

Fig. 6 is a detail right hand side elevation 35 of additional parts;

Fig. 7 is a plan view showing a modified construction of my invention;

Fig. 8 is a side elevation, partly in section, of the mechanism shown in Fig. 7

Fig; 9 is a detail rear elevation, looking in the direction of the arrow 9 in Fig. 8, and

Figs. '10. and 11 are views similar to Fig. S'but showing the parts in diiferent'positions. I

Referring particularly to Figs. 1 to 6 inclusive, I have shown my invention as embodied in a carpet loom comprising a loom frame 20, a lay 21 supporting a reed 22, a breast beam or table 23 over which the fabric C and pile wires 'P are drawn forward,

and a wire holder 25 for retaining the pile wires in forward position.

The action of the holder 25 is clearly indicated in Fig. 5. The holder 25 has a shoulder 26, a spacing lug 27 and a forwardly projecting portion 28. As the pile wires P are beaten up by the reed 22Vof the lay 21,. the last inserted wire is advanced to the position indicated at P in Fig. 5, being spaced from the last previous inserted wire by the lug 27 and being held from rearwardmovement by the shoulder 26. I

The forwardly extending projection 28 rests upon and rides, over thepreviously in-' serted pile wires P.

After the last inserted pile wire 'Pis thus beaten up and secured from rearward movement, the pile warps WV extend rearward to the harnesses, as indicated in Fig. 5, with the crossing of the warps occurring at a point X which is a substantial distance rearward from the fell of the fabric. -When the filling F is inserted, it will pass rearward of the point X and the length of filling between the point X and the fell of the fabric will form a loop at the selvage when'the filling, is beaten up. This description of operation applies to the ordinary cross wirecarpet loom using a high pile wire and not equipped with myiniprovements.

In order toprevent the crossing of the warpthreads WV substantially rearward of the pile wires, I have provided a warp depressing'device 30 having a warp-engaging portion or plate 31 projecting laterally therefrom over the'warp threads at the edge of the fabric which form the selvage'.

A stand32 is mounted on the breast beam or table 23 and is provided with a stud 33 extending through a slot3 1 in the depressing device 30. A stud 36 at the front end of the device 30 is connected by a tension spring 37 to the stud 33 inthe stand 32 A recess 10 (Fig. 4:). is formed in the stand .32 to receive a spring 41 extending upward'to engage the under side of the device 30. The spring 37 holds the device 30 yieldingly, rearward and the spring 41 yields'to permit the rear end of the device 30 to be moved upward to the position indicated in Fig.4 as a pile wire P;

is thrust forward by engagement by the reed 22.

As soon as the wire reaches its forward position and is engaged and held by the wire holder 25, the depressing device moves downward at the rear of thelast inserted pile wire and depresses the warp threads passing over the wire to the position ind cated in Fig. 6, in which figure it will be evident that the warp threads now cross at a point closely adjacent the bottom edge of the plate 31 of the device 30.

IVith the warps thus crossed the filling F will be drawn straight from the rear face of the plate 31 rather-than around the crossing X indicated in Fig. 5 and the objectionable loops at the selvage will thus be entirely avoided.

' IVhen the lay beats up, the plate 31 is engaged by the reed and the device 30 s pushed forward, returning immediately to its operative rear position as the lay thereafter moves rearward.

I have thus provided very simple mechanism by which the formation of filling loops at the selvage is effectively preventedregardless of the height of the pile wires mserted in the weaving.

In Figs. 7 to 11 I have shownamodlfiedconstruction in which an attachment is provided which combines the functions of the wire holder 25 and the warp depressing device 30. In this construction, a latch is pivoted at 51 on a stand 52 and is engaged by a spring 53 pocketed in the stand 52andengag1ng the under side of the front end of the latch 50, thus depressing the hook-shaped rear end 54 thereof.

WVhen a newly inserted pile wire P is beaten up, the wire engages the curved under surface of the hook-shaped portion 54, raising the latch as it passes thereunder. As soon as the wire is in forward position, the latch snaps down behind the wire and prevents rearward movement thereof. This part of the device takes the place of the forwardly extending wire holder 25 heretofore commonly .used.

A plate 55 is mounted at the side of the latch 50 and is provided with a stud 56 resting V on the upper edge of the latch 50 and with. a

cam slot 57 through which extends a stud 58 mounted on the latch 50. A spring 59 connects the stud56 with a stud 60 on the hookshaped rear portion 54L of the latch 50 and draws the plate 55 yieldingly rearward and downward. An offset warp-engaging plate 62- (Fig. 9) is formed on'the plate 55 and 1s positioned to engage the selvage warps W as in the form previously described.

A plate 65 is secured to the plate 55 previously' described and at its rear end is provided with an offset portion positioned for engagement by the reed 71 as the lay moves forward;

The operation of this form of my invention is clearly indicated in Figs. 8, 10 and 11.

When the pile wire reaches its forward position, the latch 50 drops to the position indicated in Fig. llbut the warp depressing device is held in the raised position indicated in Fig. 11 by engagement of the reed 71 with the portion 70 of the plate 65. As the reed thereafter moves rearward, the warp depressing device movesdownward and slightly rearward, being guided by the cam slot 57, and depresses the selvage warps closely adjacent the last inserted pile wire, as inclicated in Fig. 8, and as previously described in connection with the form of my invention shown in Figs. 1 to 6.

Having described two forms of my invention, it will be seen thatI have provided very simple mechanism by which the selvage warp threads are depressed at the rear of the pile wires so that the crossing of the threads occurs closely adjacent the lower edge' of the depressing device, and so that the filling thread may be drawn from a point substantially at the fell of the fabric. filling thread is thus inserted, it can be beaten up without forming any loop at the selvager With this'description of my invention and its advantages in mind, I do not wish to be limited to the details herein disclosed, otherwise than as set forth in the claims, but what I claim is 1. Ina cross wire carpet loom, means to hold the last inserted pile wire from rearward movement, and a device mounted 011 the loom frame adjacent the selvage at the fell of the cloth and elfective to depress the selvage pile warps by downward engagement therewith at the rear of but closely adjacent to the last inserted pile wire.

2. In a cross wire carpet loom, means to hold the last inserted pile wire from' rearward movement, and means to depress the selvage pile warps at the rear of but closely When the adjacent to the last inserted pile wire, said latter means being mounted to'yield forwardly as the lay heats up.

3. In a cross wire carpet loom, means to hold the last inserted pile wire from rearward movement, a Warp depressing device mounted on the loom frame adjacent the selvage at the fell of the cloth and effective to depress the selvage pile warps by downwardengagement therewith at the rear of but closely adjacent to the'last inserted pile wire, and means to force the rear end of said depressing device downward against said pile warps.

'4:.'I11 a cross wire carpet loom, means to hold the last inserted pile wire from rearward movement, a warp depressing device engaging the selvage pile warps atthe rear of the pile wire, means to force the rear end of said depressingdevice downward against v said pile warps, and additional means to force said depressing device yieldingly rearward.

5. In a cross Wire carpet loom, means to 5 hold the last inserted pile wire from rear- Ward movement, a Warp depressing devlce, a

support on which said device is pivoted and also slidable, and yielding means to force said device rearward and downward. m 6. In a cross wire carpet loom, a stand, a latch pivoted thereon, means to 'yieldingly depress said latch, a warp depressing device movably mounted on said latch, and means to'move said depressing device rearward and downward to operative posit-ion relative to said latch.

7. In a cross Wire carpet loom, a stand, a latch pivoted thereon, means to yieldingly depress said latch, a warp depressing device movably mounted on said latch, and means to move said depressing device rearward and downward to operative position relative to said latch, said depressing device having a stud and cam slot connection with said latch. In testimony whereof I have hereunto affixed my signature.

VALTER HALL.

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