US2278333A - Faller wire for stop motions - Google Patents

Description

March 31, 1 942. O o, w sc 2,278,333-

FALLER WIRE FOR STOP MOTIONS Filed June 11, 1940 Patented Mar. 31, 1942 FALLER FOR STOP MOTIONS Otto W. Schaum, Philadelphia, Pa., assignor to Fletcher Works, Incorporated, Philadelphia, Pa., a corporation of Pennsylvania Application June 11, 1940, Serial No. 339,957

Claims.

This invention relates to taller-wires for stop motions and other devices, machines, apparatus, etc. employing or being employed in the manufacture or processing of single filaments, threads,

yarns and other textile ends, including spinning, doubling, twisting, and winding machines adapted to combine a plurality of ends or strands into single multi-stranded ends, as disclosed, for example, in the copending application for United States Letters Patent, Serial No. 339,958, filed June 11, 1940.

In twisting and winding machines of the type, for example, disclosed in said application and in prior United States Letters Patent, No. 1,471,- 292 issued to Karl Sloat under date of October 16, 1923, as many as twelve single ends are some times twisted together and wound on each bobbin, of which there may be eighty or more in a single machine; and each end-is associated with an individual taller-wire of its own.

Each faller-wire normally consists of a base lever, to which the body of the-faller-wire is secured by a small screw passing through an eye formed on the lower end of the wire and threaded into a hole in the lever, with the bodyportion of the wire which is disposed above the securing eye lying between a pair of lugs extending outwardly from the face of the lever against which the eye of the taller-wire is secured.

Each taller-wire normally has a porcelain guide at its free end through which the textile end runs in passing from a supply package to the flyer or ring-traveler of the twisting and winding head. These guides become worn and require replacement. Under the most favorable conditions normally found in a twisting room, removal of the small screws from and their rethreading in the small tapped holes in the faller- Wire levers is a tedious and time-consuming task, requiring approximately a full days time for a skilled mechanic to change the wires in but a single machine.

The object of the present invention is to improve the constructions of the base levers and the wires, whereby the wires may be removed from and replaced in the base levers with a minimum of eiiort, under most unfavorable lighting and other conditions, in but a relatively small percentage of the time now required to change a wire under the most favorable conditions.

Another object of the invention is to construct the base levers and wires for assembling and replacement without the use of securing screws or tapped holes, thus reducing the cost of manufacture thereof.

The construction of the improved taller-wire assembly forming the subject matter of the present invention will be fully disclosed hereinafter, reference being had to the accompanying drawing, of which:

Fig. 1 is a perspective view of the faller-wire assembly as it appears under normal running conditions;

Figs. 2 and.3.areperspective.views of the tallerwire assembly per se illustrating the facility with which. the. wire may be removed from and replaced in the base lever;

Fig. 4 is an enlarged vertical sectional elevation of the lower portion of the assembly of Fig. 1;

Fig. 5 is a transverse sectional view taken on the line 5--5, Fig. 4. v

Fig. 6 illustrates a taller-wire with an elongated neck. for use with light tension work; and

Fig. '7 illustrates a faller-wire with the thread eye formed as a part of the neck of the wire.

As shown in the drawing, the faller-wire assembly 1 comprises a base lever element 2 and a faller-wire body element 3.

The base lever2, in the embodiment of the invention shown, is of the bell-crank type and includes a wire supporting arm 4 and a weight or stop motion actuating arm 5 disposed at an angle relative to the wire supporting arm 4.

At the juncture of the divergent arms 4 and 5 the lever 2 is provided with a pivot opening 6. The opening 6 is adapted to receive a rod 1 for mounting a plurality of the assembled units I in side by side relation in a machineas shown in said copending application- The arm 4 projects outwardly from the pivot opening 6 and is provided at and adjacent its outer end with an elongated socket or boot Ill of flattened tubular cross-sectional construction, as shown in Figs. 4 and 5. The two opposite side walls ll, H of the socket Ill are substantially parallel to each other, longitudinally and transversely of'the arm 4; and the end walls l2, vI2 of said socket are also parallel, said sides H, H and ends 12, I2 forming an elongated slot or channel I4 for receiving the lower end or foot of the faller-wire body element 3.

The faller-wire body element 3 comprises a shank or body portion i 5. The upper end of the shank I5 is bent to form a laterally extending neck It at any suitable angle to the body portion l5. The neck I6 normally is cemented, glued or otherwise secured in a porcelain or similarly hard wear-resisting guide eye I l, as-shown in Figs. 1, 2 and 3, or the outer end of the neck may be bent to form an eye I'Ia, as shown in Fig. 7, in lieu of the porcelain eye H.

In the present instance the guide I1 is of the open-eye type; i. e. it is provided with an elongated opening I8 for receiving the textile end a: and has a side-passage I9 through which the end a: may be passed laterally, to eliminate the necessity for threading the end through the opening I8 lengthwise.

The opposite end of the shank or body I is bent upon itself at 22 to form a return or hairpin bend in the plane of the shank or body I5, in the shape of a U or V, with one leg 20 thereof spaced from and in divergent relation to the lower portion 2| of the shank I5 which forms the second leg of the U or V shaped lower end or foot portion 25 of the faller-wire body element 3.

The foot 25 of the faller-wire body element 3 is adapted to have a firm but resilient telescoping slip joint connection in and with the socket III in the base lever 2.

In assembling the wire 3 with the base lever 2, regardless of whether the lever is installed in a machine or is separate from the machine, the assembler, by merely holding or steadying the arm 4 with the fingers of one hand, for example, and flexing the leg 20 toward the leg 2| of the U- shaped foot 25 of the wire 3 by the fingers of the other hand, for example, as shown in Fig. 3, may readily insert the more or less pointed toe-like end 22 of the foot 25 into the open outer end of the boot or socket Ill of the lever 2. The wire 3 is then pressed downwardly in the channel I4 until the toe 22 engages the arm 5 .at the base 23 of the intersection of the arm 5 with the arm 4. Releasing the leg 23 permits it to flex away from the leg 2| until the two legs resiliently and frictionally engage the end walls I2, I2 respectively of the channel I4, thereby holding the wire 3 firmly in the lever 2.

To remove the wire 3 from the lever 2 it is only necessary to grip and press the upper inbent end 24 of the leg 20 toward the leg 2|, as shown in Fig. 2, which releases the frictional spring-pressed grip of the legs 20, 2| of the wire 3 from the walls I2, I2 of the channel I4, whereupon the foot 25 may be freely slipped out of the boot I0.

In Fig. 6, the neck Ifia of the faller-wire 3a is extended or longer as compared with the neck I6 of the wire shown in Figs. 1, 2 and 3, to throw the eye IT or I'Ia, as the case may be, further away from the shank I5a, to increase the weight or leverage in or of the portion Ia of the fallerwire assembly at one side of the pivot axis Ia, with respect to the weight or leverage of the portion I b of the assembly at the opposite side of the pivot axis Ia, whereby the portions Ia and lb may be brought into balance or as close to a balance about the axis Ia as may be desirable or necessary in the handling of fine light weight filaments which are under very light tension and thus prevent the weight of the arm 5, which trips the stop motion, from pulling the filament into a loop, from its normal line of travel, which will be sufliciently long to allow the arm 5 to rock about the axis Ia. sufiicient to effect tripping the stop motion accidentally.

By bending the neck IBa at its point of juncture 3!) with the shank or body I511 as shown in dotted lines in Fig. 6 any desired variation in the ratio between Ia and lb may be accomplished.

Similar or further adjustability of relative weights and leverages between the parts Ia and lb with respect to the axis Ia may be accomplished by bending the shank I5a, for example at the point 3|, alone or in combination with bending the wire at the point 30.

From the above it will be clear that the fallerwires of the present invention may be readily removed and installed without the use of tools of any kind, making it possible for a mechanic to replace wires, having Worn porcelains, solely by the sense of touch, if necessary, under poor lighting conditions; and making it possible for the mechanic to change all the multitudinous fallerwires in a machine in relatively short time.

It will be clear from the foregoing, that adjustability of relative weights and/or leverages at opposite sides respectively of the pivot axis of the faller-wire assembly may be readily accomplished to suit all Varying conditions of tension under which the filaments controlling the faller-wires may operate.

It will be understood that the lever 2 may be produced in any suitable manner and composed of any suitable material without departing from the spirit of the invention. For example, while the lever in the present case is shown as being composed of sheet metal, cut and pressed into the desired shape, the lever may be molded or die-cast, if desired.

I claim:

1. A faller-wire structure comprising a base element, a body element, a guide secured to one end of said body element, a foot on one of said elements and a socket on the other of said elements having an opening of substantially the same cross-sectional shape and dimensions as the foot to form a readily detachable connection between the opposite end of said body element and said base element.

2. A faller-Wire structure comprising a base element, a body element, a guide secured to one end of said body element, a socket on one of said elements and a resilient foot on the other of said elements adapted to fit into and expand into frictional gripping contact with internal walls of said socket for frictionally connecting the opposite end of said body element and said base element.

3. A faller-wire structure comprising a base element, a body element, a guide secured to one end of said body element, a socket on said base element, and an expansible foot on said body element snugly fitting within said socket and forming therewith a frictional resilient gripping slip joint connection between the opposite end of said body element and said base element.

4. A faller-wire structure comprising a base element, a body element, a guide secured to one end of said body element, a socket on said baseelement, and a return bend on the opposite end of said body element adapted to fit within said socket with opposite legs of said bend in divergent relationship and resiliently engaging opposite end walls-respectively of said socket.

5. A faller-wire comprising a shank and a portion bent backwardly upon said shank at an acute angle thereto in the plane of said shank and in laterally spaced relation to said acute angular shank and forming a blunt point on one end of the faller wire with the extreme end of said acute angular bent-back portion bent inwardly at an obtuse angle relative thereto for the purpose disclosed.

OTTO W. SCHAUM.

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