US435321A - Herbert redgate - Google Patents

Description

H. REDGA-TE. TWIST LACE MACHINE.

(No Model.)

No. 435,321. Patented Aug. 26, 1890.

UNITED STATES PATENT OFFICE.

HERBERT REDGATE, OF NOTTINGHAM, ENGLAND.

TWIST-LACE MACHINE.

SPECIFICATION forming part of Letters Patent No. 435,321, dated August 26, 1890.

Application filed October 12, 1889- Serial No. 326,797. (No model) To aZZ whom it may concern.-

Be it known that I, .HERBERT RE-DGATE, lace-manufacturer, a subject of the Queen of Great Britain, residing at13t Queens Walk, in the town and county of Nottingham, England, have invented certain new and useful Improvements in Twist-Lace Machines, of which the following is a specification.

The object of my invention is to make twist-lace upon the tops of the carriages instead of on the points ordinarily employed, the carriage being so shaped and formed as to beat up the threads which the point-bars now do in levers and curtain-twist-lace machines.

In carrying my invention into effect I dispense with the points and the point-leads, point-bars, cams, levers, springs, and toothed gearing used for working the same, and I employ in lieu thereof a newly-shaped carriage, to which the necessary motions are imparted to make the twist-lace upon their tops by the usual method of moving the warp with guidebars, jacks, stump-bars, steel bars, and jacquard.

My invention is represented in the accompanying drawings, in which Figure 1 is an end elevation of parts of a twist-lace machine with my improvements applied thereto, and Fig. 2 is a face view of one of the carriages separate.

My new-shaped carriage Ct is in the form of a triangle, the bottom part being in the form of a segment (1 of a circle extending to about a quarter of a circle or thereabout. It is provided with a bobbin a, as usual, and the upper part of the carriage is brought to a point a which is at the center of motion of the carriage, and on which the fabric is formed by the aid of guide-bars b and other parts, operated in the same way as in ma chines hitherto in use, a guide-hole a being formed at the point a for the passage therethrough of the thread from the bobbin a. The carriages a move backward and forward between combs c, which form the segments of a circle, and this movement of the carriages a is obtained by means of catch-bars d, having catches d and carried by arms e, fixed to round'bars e, whichat their ends are carried by double-ended levers f, whose centers of motion f are coincident with the center of motion or points of the carriages. Thebars e, carrying the catch-bars cl, are connected by links or connecting-rods g with double-ended levers h, mounted upon the top center shaft 1', and this shaft has fixed on the end thereof a lever j, which by a rod his connected to a crank Z upon the front revolving shaft m, which is the prime mover.

The catch-bars d are similar to those now in use; but the operating devices above described, and which form part of the new construction, are different. The catch bars d by falling into the ribs (0 of the carriages a and by the motion given to them pull the carriages a to either one or the other extremity of the comb-segments c. Vhen in that position, the threads 97. in the guide-bars Z) are moved,as required,to the right or to the left. These movements of the threads n and the combined transverse backward and forward movement of the carriages a and their bobbins a' form the fabric or twist-lace on the tops of the carriages a.

c c are the comb-bars, and sis part of the end framing of the machine.

The object gained by forming the carriage with nibs a and operating them by catchbars in contradistinction to the method of drawing them by means of pushers, as described in English Patent No. 2,630 of 1854, is as follows: By means of thenibs and catchbars the carriages can be moved to and fro and yet leave a clear space in the center of the machine for the free movement of the guide-bar threads, as the catch-bar on one side is not then in contact with the carriages, while when operating the carriages by pushers the latter remain in contact with the carriages when the guide-bar threads are being moved, and consequently interfere with the free motion of such threads.

' In carrying my invention into effect I also dispense with the facing-bar; but I use a porcupine-roller p and a work-roller q in the position shown in the drawings, a portion of the periphery of the porcupine-roller 1) being vertically over the point where the work is made, or, in other words, over the center of motion of the carriages. The fabric 4, after traversing a portion of the circumference of the porcupine-roller 1), passes to the work-roller q, onto which it is wound in the ordinary man- ICO ner. Motion is communicated to the rollers 19 and g by the well-known means.

Having fully described my invention, what I desire to claim, and secure by Letters Pat- 5 ent, is

1. A triangular carriage constructed with a segment a at the base, with nibs 0. at the ends of the segment, with apoint a at the center of motion of the carriage and on the To top of which the fabric is formed, and with a thread-guide hole in the extremity of the point and provided with a bobbin a, substantially as described.

2. The combination of atriangularcarriage I 5 constructed with a' segment a, at the base,

with nibs a at the ends of the segment,with a point a at the center of motion of the carriage and on the top of which the fabric is formed, and with a thread-guide hole in the 20 extremity of the point and provided with a bobbin 0/, guide-bars, catch-bars, and mechtially as described and shown.

HERBERT REDGATE. Witnesses:

EDWARD PHI LIPs DOUDNEY, M. A.,

134 Queens Walk, Nottingham. WILLIAM BUCK DEARDEN,

Alkmonton Vicarage, Derby.

.means for actuating the latter arm, substan-

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