US779123A - Thread-dressing machine. - Google Patents

Description

PATENTED JAN 3, 1905.

.G. A. PREDBNBURGH. THREAD DRESSING MACHINE.

APPLICATION FILED JULY 7. 1904.

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Patented January 3, 1905,

PATENT EETcE.

GEORGE A. FREDENBURGH,'OF PAWTUOKET, RHODE ISLAND.

THREAD-DRESSING MACHINE.

SPECIFICATION forming part of Letters Patent No. 779,123, dated January 3, 1905. Application filed July '7, 1904. Serial No. 215,661.

To all whom it may concern:

In a machine of this class it occasionally hap.

, pens that a breakage will occur in the thread between the said feeding mechanism and the winding-spools at the top of the machine and before the feeding mechanism can be stopped the remaining feeding portion of the thread will become wound around the cloth-covered shafts in a bunched form, with the result that a considerable amount of thread will have to be wasted.

My present invention relates to a device which when a breakage takes place in the thread between its feeding mechanism and its winding-spool will automatically act to instantly cut the thread at a fixed point before it reaches the cloth-covered shafts and leaving but a small strand of thread to be thrown to waste.

In the accompanying sheet of drawings,Figure 1 is a View, partly in section and partly in elevation, showing the cloth-covered shafts for feeding the thread, a spring-controlled roller-disk for holding the thread in contact upon said shafts, and the relative position of the parts embodying my thread-cutting device. Fig. 2 is a front sectional view taken in line X X of Fig. 1, showing the normal position of my device, as when the thread is feeding properly. Fig. 3 is an enlarged detail section taken in line Y Y of Fig. 1, showing the cutter-blade of the device corresponding in position to the relation of parts shown in Fig. 2, as prior to cutting the thread. Fig. 4 is a view similar to Fig. 2, showing the position the parts assume when a breakage occurs in the thread. Fig. 5 is a View similar to Fig. 3, showing the cutter-blade corresponding in position to the relation of parts shown in Fig. 4:, as after the thread has been cut.

Like characters indicate like parts.

Referring to Fig. 1, a a are two shafts, which are horizontally mounted in proper supports on the machine-frame and driven by power therein, so as to rotate in the same direction, as indicated by the arrows in said figure. Said shafts are each covered by cloth Z) 6, which is stitched or secured thereon in any suitable manner.

0 represents a frame which has one end pivotally mounted on a pin d of a plate 0. Said plate is secured by bolts ff to the top of a rail 9, which forms a part of the machineframe. This pivotal frame 0 extends over and beyond the cloth-covered shafts a a and has its central portion provided with a rectangular opening to receive a roller-disk h. Said disk has a central shaft 7;, whose ends project and are made flat, so as to pass freely through slotted openings formed opposite each other and extending from the top surface of said frame 0, as at c. The opposite or front end of the pivotal frame 0 has two integral upwardly-extending tongues, as at 0 to receive the end of a spring-controlled latch j, which is mounted on the front rail k, forming a part of the machine-frame. Said latch is arranged to yieldingly press the disk against the peripheral surfaces of the cloth-covered shafts (a (of. In the opening of the pivotal frame 0 and at the rear of its disk 7a is situated athreadguide Z, in the form of a cylindrical sleeve, which is rotatably mounted on a pin 972, whose ends are secured in the side walls of said frame. This sleeve is provided with a centrally-arranged peripheral groove, which forms a passage for the thread. A wire a is secured near the pivot of the frame 0, projecting vertically therefrom, and has its upper portion terminating in a lateral U-shaped bend, as at n. A bracket 0 is secured by screws 0 0 to the side of the rail 9 of the machine-frame, and said bracket extends beneath the cloth-covered shafts and has two integral ears 0 0 which are drilled so as to form journal-bearings, within which is mounted a rod 1). Said rod has one end slotted longitudinally to receive a cutter-blade p, which is secured in place by screws, as at p in Fig. 3. This blade has cutting edges formed opposite each'other, so' that when one edge has become dull the blade may be reversed to expose a sharp edge. On the opposite end of the rod 10 is mounted a crank-arm 19 which is secured in place by a screw p. A lever q has one end pivotally mounted on an extension 0 of the bracket 0, as ata point 0 and said lever terminates above the frame 0 with a laterally-projecting wire which is arranged to pass through the opening formed by the U-shaped bend in the wire at of said frame. A link-bar s has one end connected near the middle, portion of the lever g at a point .9 and its opposite end connected to the outer portion of the crank-arm 10 as at a point 8 The thread (designated by letter 25) comes up from a sizing-box and passes between the cutter-blade of the rod 19 and a stud 2 which is secured in the front ear of the bracket 0 in the manner shown in Figs. 1 and 3. Thence the thread passes in front of the cloth-covered shaft to, under and in contact with the surface of the disk it, thence in contact with the rear cloth-covered shaft a, thence passing to the rear of the thread guide or sleeve Z, in the groove thereof, to be directed between the wire q and the U-shaped portion of the wire n, respectively, from whence the thread passes up to be wound upon the spool at the top of the machine. The outer portion of the crank arm 19 has an enlargement formed thereon, as at u, and which enlargement acts as a weight, so as to keep the wire q pressing the thread against the bent portion of the wire n during the feeding movement of the thread, inthe manner shown in Fig. 2. The tension upon the thread is applied between the cloth-covered shafts, which form a part of the thread-feeding mechanism, and the spindle mechanism for driving the spools, and this tension is such as to keep the thread nearly plumb as it passes between the bent or U-shaped portion of the wire 1% and the wire q. Now if perchance a breakage should take place between the said two mechanisms the thread thus released from its tension permits the crank-arm to swing down by gravity by reason of its weighted end, which movement turns the rod 19 and carries the cuting edge of its blade against the thread, which continues to feed by the constant rotation of the shafts a ct until the blade contacts with a flat surface of the stud 19 where the thread is held until parted by the increase of tension brought upon it by the rotation of the said shafts, in the manner shown in Fig. 5. After the broken thread has thus been cut by the device the operator swings the lever (I over into contact with a flat spring '0, which is secured upon the extension of the bracket 0, and said spring holds the lever and its connected parts by friction until the thread is rewith the opening therein, after which the pivotal frame is lifted to allow the thread to be placed between its roller-disk and cloth-covered shafts. The lever q is then released from the spring '1) and again brought to its normal position of contact with the thread, as shown in Fig. 2.

This thread-cutting device for a threaddressing machine forms a very compact arrangement of parts, so that a large number of such devices may be readily mounted on the said machine, each device operating independent of the other. Furthermore, it is evident that by the use of this device only a small percentage of thread can go to waste.

This invention is an improvement upon the thread-dressing machine shown and described in Letters Patent of the United States No. 702,786, issued to me June 17, 1902.

What I claim, and desire to secure by Letters Patent, is

1. In a thread -dressing machine having cloth-covered shafts rotatably mounted on the machine-frame and driven by power,a springcontrolled pivotal frame having a projecting wire terminating in a lateral U-shaped bend and a roller-disk mounted on the frame and adapted to hold the thread in contact upon said shafts, the herein-described thread-cutting device'consisting of a bracket secured to the machine-frame and extending beneath said shafts; a stud secured on said bracket; a rod rotatably mounted in said bracket and provided with a slotted opening; a blade secured in the opening of said rod and having oppositely-disposed cutting edges adapted to contact upon said stud; a crank-arm secured at the other end of said rod and having an enlargement which forms a weight at its outer portion; a lever pivoted on said bracket and having a projecting wire arranged to pass between the U-shaped portion of the wire on said pivotal frame; a link connection from the weighted end of said crank-arm to said lever; and a spring secured on an extension of said bracket arranged to temporarily hold the parts of said device in position, substantially as set forth. r

2. In a thread-dressing machine having cloth-covered shafts arranged to rotate in the same direction, a spring-controlled pivotal frame extending over said shafts, a roller-disk mounted on said frame and arranged to have its peripheral surface hold the thread in contact with the surfaces of said shafts, and a projecting wire secured in said frame and terminating in a lateral U-shaped bend,the herein-described thread-cutting device consisting of a bracket secured to the machine-frame and extending beneath said shafts; a stud secured on said bracket and having a flat surface; a rod rotatably mounted in said bracket and carrying a cutter-blade arranged to move in the path of and force the thread against the surface of said stud; a lever pivoted on said bracket and having a laterally-projecting Wire at its upper extremity; a link connection to the middle portion of said leverya crank-arm secured on the cutter-blade rod and connected to said link, said arm having an enlargement at its outer portion forming a Weight to hold the thread, by means of the Wire of said lever. against the bent portion of the Wire on said pivotal frame, substantially as set forth.

3. In a thread-dressing machine having cloth-covered shafts, a pivotal lever having its upper portion arranged to rest upon the thread at a point above said shafts; a rod rotatably mounted beneath said shafts and carrying a cutter-blade at one end thereof and situated close to the path of the feeding thread; a fixed stud disposed near to the cutting edge of the blade on said rod; a Weighted crank secured on the other end of said rod and havinga connection to said lever, so arranged that When a breakage occurs in the thread above its feedshafts the said Weighted crank causes the blade of said rod to force the feeding thread against said stud and thereby prevent further movement of the thread, substantially as set forth.

In testimony whereof I aflix my signature in the presence of two witnesses.

GEORGE A. FREDENBURGH. Witnesses:

ALBERT W. BROWN, DANIEL E. Looms.

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