US245291A

US245291A - fieth

Info

Publication number: US245291A
Authority: US
Publication date: 1881-08-09
Anticipated expiration: 1898-08-09

Description

3 SheetsSheet 1. A. P. FIRTH 8a J. BOOTI-IMAN.

(No Model.)

LOOM FOR WEAVING PILED FABRICS.

m K mg m @1 A w w w W m 1 5 m By C.

(No Model.) 3 Sheets-Sheet 2.

A. P. FIRTH & J. BOOTHMAN.

LOOM FOR WEAVING PILED FABRICS.

N0.-Z45,Z91. Patented Aug. 9,1881.

Eve 11/20 2 =9.

(No Model.) 3 SheetsSheet 3. 4

A. P. FIRTH 8v J. BOOTHMAN.

LOOM FOR WEAVING PILED FABRICS.

I No. 245,291.

5 Patented Aug. 9, 1881.-

fizz/anions f4? 7 Witness es:

UNITED STATES PATENT Farce.

ALGERNON F. FIRTH AND JOHN BOOTHMAN, OF BAILIFFE BRIDGE,

COUNTY OF YORK, ENGLAND.

LOOM FOR WEAVING PILED FABRICS.

SPECIFICATION forming part of Letters Patent No. 245,291, dated August 9, 1881.

Application filed December 13, 1880. (No model.) Patented in England September 29, 1880.

To all whom it may concern Beit known that we, ALGERNON FREEMAN. FIRTH and JOHN BDOTHMAN, both of Bailifl'e Bridge, in the county of York, England, have invented certain Improvements in Looms for Weaving Piled Fabrics, (for which we have received English Patent No. 3,944, dated September 29, 1880, for fourteen years from said (late,) of which the following is a specification.

Our invention relates to an improved apparatus for taking the wires from and replacing them in the fabrics which are being woven on a loom, such as a tapestry-loom; but the invention is applicable to all looms on which pile-fabrics are being woven.

In the accompanying drawings, Figure 1 is a plan or top view of so much of the tapestryloom as is necessary to illustrate our invention. Fig. 2 is a front elevation of the same. Fig. 3 is a side elevation of the same, partly in section, the line 0 c, Fig. 1, indicating the plane of section. Fig. 4 is a vertical longitudinal section on the line 7c, Fig. 1,-looking toward the front of the machine. Fig. 5 is a detail cross-section, on an enlarged scale, of the carriage and wire-conveying apparatus. Fig. 6 is avertical section on line 0 10, Fig. 5. Figs. 7, 8, and9 are detail viewsofparts ofthe mechanism, to which reference will be more fully made in the following parts of the specification. Fig. 10 is an enlarged face view of the pile-wire nippers; Fig. 11, a cross-section thereof. Fig. 12 is an enlarged top view of hook to on carriage F.

Ain the drawings represents the driving-shaft of the loom, to which rotary motion isimparted by suitable mechanism, and which, by means of beveled gear wheels a, drives a shaft, 13, which is hung in bearings outside of the main frame-workO of the loom. The shaftB, which is thus hung at the outside of theloom proper, carries the tappets or cams 1) (16,850., for moving the levers 9, that connect in suitable manner with the lower parts of the healds. These healds are not shown in the drawings; but in Fig. 2 the leversg are clearly shown in position such as willpermitthem to be connected by suitable links with the lower ends of the appropriate healds, so that as each lever g is oscillated on its pivot, which pivot is marked h, and which is also located outside of the main frame-work 0 of the loom, the heald will be moved up and down in the requisite manner. Thus we obtain a directconnection with the lower ends of the healds instead of a complex connection with the upper ends, which heretofore has frequently been employed.

' The letter D in the drawings represents the lever for throwingthe shuttle, which lever is commonly known as the picking-stick. This lever, which is also hung outside of the main frame-work O of the loom by pivot i, is drawn to its normal position by a spring, j, in which normal position its upper end is at the greatest distance from the frame-work of the loom. A projecting toe, l, at the lower part of the lever D is directly beneath another lever, E, which is hung longitudinally outside of the frame of the loom proper, as indicated in Fig. 3, and which is beneath a picking-arm, m, that is mounted upon the shaft A. This arm carries a projecting pin, a, which is adjustable in a curved slot of the arm, and during the rotation of the shaft A reaches the upper edge of a double incline, n ,of the lever E and swings it downward, thereby vcausing it to press upon the toe l of the lever D, so as to cause the latter to swing rapidly toward the frame-work of the loom and throw the shuttle with proper swiftness through its course. The pin n'is made adjustable in the slot of the arm m, so that the time of the movements of the levers E D and of the shuttle may be regulated. Our invention, however, is the mechanism for moving the wires that are usually em'ployed in the art of weaving tapestry, carpets, and other pile fabrics. This mechanism comprises the following devices:

F is a carriage, fitted upon a rail, G, which is placed at the front portion of the loom. The carriage F is moved back and forth on the rail G by means of the link 0 and lever H, the latter being oscillated on its pivot by a suitable cam, I, that is mounted upon the shaft B, so that reciprocating motion is imparted to the carriage F. This carriage F has a downwardly-projectinglug, 19, (clearly shown in Fig. 5,) which lug hasfor its object to vibrate a swinging rod, J, Fig. 1, in such manner as to carry this rod J toward the rail G when the carriage F approaches the fabric on the loom. The lug p bears against the inner face of rod J and crowds the same outward toward the rail G when the carriage F is moved near to the fabric; but a spring, L, serves to throw the rodJ at a greater distance from the rail G when the carriage is at a distance from the fabric on the loom, as in Fig. 1. The rod J carries at its inner end--that is to say, at the end which is nearest the fabric on the loom a projecting fork or guide-piece, 4', which is more fully shown in Fig. 9, and the object of which will be hereinafter more clearly described.

In order to permit the rod J to vibrate under thejoint influence of the lug p and spring L, its outermost end is pivoted to theframe-work that is attached to the main frame of the loom but, in addition to the motion which the rod J has in a horizontal direction on its said end pivot, it also has a slight "ertical movement, which enables it to be locked in one of two notches that are formed on a rigid projection, M, of the loom-frame, Figs. 1 and 7. Whenever the carriage F is at its greatest distance from the body of the loom the spring L crowds the rod J into the notch s of the projection M which is farthest distant from the rail G; but when the carriage F approaches the body of the loom and crowds the rod J close to the rail G the rod J springs into the notch t which is nearest the rail G, and thus the projection M furnishes two resting-places for the rod J, of which one, 1, is opposite to the wire to be withdrawn, and the other, 8, opposite to the open shed, which allows a new wire to be inserted.

N is a transverse slide mounted on the carriage F, and fitted into a groove formed in the top of said carriage, as shown in Figs. 2 and 6. The slide N joins in the longitudinal movement of the carriage F, but is capable also of independent lateral movement on said carriage F. This independent lateral movement is given to the slide Nby means of an obliquelyplaced stifl' rail, 0, which is attached to the frame-work of the loom, and which enters a groove in the upper part of the slide N. This rail has the effect of causing the down wardly-projecting arm a of the slide Nto approach the rail G when the carriage F is at the greatest distance from the fabric, and to be farthest away from the rail G when the carriage F is nearest the fabric in the loom.

To the downwardly-projecting arm to of the slide N are attached a pair of nippers, v, of the ordinary construction, as indicated in Figs. and 11, held in their normal or closed condition by a rubber or other spring, u These nippers are adapted to hold the loop end of the wire in the usual manner.

The carriage F has attached to it a wiregrasping hook, 20, which is indicated in Fig. 1, and shown also in Figs. ll and 12. Whenwire and takes that one of the wires which has longest been in the fabric out of the same on the return motion of the carriage F, pulling this wire out of the fabric and carrying it along with the receding carriage F. The nippers c on the transverse slide N, owing to the lateral motion of the latter on the rail 0, gradually approach the hook w until they reach and springtheirrabbeted edges over, and thus grasp the wire which that hook holds, and take it from the hook as soon as the carriage F again moves toward the fabric, for the wire which is pushed forward by the nippers will now leave the hook w and be retained by the nippers. As the carriage F again approaches the fabric the distance between the nippers and the hook to gradually increases. The wire which is being withdrawn from the fabric by the hook moves while the carriage recedes along the fork r of the bar J, and when the hookw has taken the wire entirely out of the fabric the innermost end of the wire still rests in the notch of the fork r. At this time the lay P, that carries the shuttle-box, moves outward, and, bringing an outwardly-projecting arm, .70, under the inner end of the rod J, lifts the rod J out of the notch t and allows the spring L to push the rod J into the notch s, so that now the inner end of the wire is, by this transposition of the rod J and fork 1', brought opposite to the space where it is to be again inserted in the fabric, or, rather, in the open shed. The carriage F now returns toward the fabric, together with the slide N and with the nippers v, which push and guide this wire along the fork 1" into the open shed. When the inner end of the wire has a sufiicient hearing in the shed the downwardly-projecting lugp of the carriage F takes hold of the rod J and moves it back into the notch t, as the wire which is to be inserted now finds its proper guidancein the shed itself, the nippers continuing to push it forward. When the nippers have pushed the wire into the fabric to the proper extent they are carried back and let go of the wires, as their jaws are so formed (see dotted lines in Fig. 10) that they can push the wire in, but cannot pull it out. The slide F, on its return motion, takes a new wire out of the finished fabric by means of the hook to and continues the operation, as has been specified.

I claim The combination, with the reciprocating carriage F, the rail Gr, transverse slide N, oblique rail 0, wire-carrying hook to, nippers v, spring L, rod J, having fork r, and the projection M, having notches s and t, of the lay P, the shuttle-box having projection w, and mechanism for moving the carriage F back and forward, for operation substantially as herein shown and described.

A. F. FIRTH. JOHN BOOTHMAN.

Witnesses:

WALTER BRIERLEY, JOHN Tom).