US2452004A

US2452004A - Warp stop motion drop wire

Info

Publication number: US2452004A
Application number: US776983A
Authority: US
Inventors: Harry F Weddington
Original assignee: Individual
Current assignee: Individual
Priority date: 1947-09-30
Filing date: 1947-09-30
Publication date: 1948-10-19
Anticipated expiration: 1965-10-19

Description

WARP STOP MOTION DROP WIRE Filed Sept. 50, 1947 YFIG.2'

FIG.

Zlwumvtm HARRY l WEDDINGTON Patented Oct. 19, 1948' I WARP STOP MOTION DROP WIRE.

Harry F. Weddington, Salisbury, N. 0. Application September 30, 1947, Serial No. 776,983

This invention relates to an improved drop wire for use in stop motion mechanisms in looms and although I have shown it'in connection with the notched bar type of stop motion, it is evident that this could be used in the electrical stop warp threads in a sheet of warp and each thread runs through an individual drop wire and as long as each thread has proper tension thereon, the drop wire is heldin elevated position and therefore cannot actuate the stop motion mechanism.

4 Claims. (Cl. 139-368) motion drop wire or in the older type of stop Upon parting of a thread or strand or loss of has to be removed from the loom and all of the drop wires reinstalled in order to install a new drop wire in the place of one which has become broken.

It is an object of the present invention to provide a drop wire which can easily be placed on the supporting bars of a stop motion mechanism without in anyway disturbing the thousands of other drop wires already in installed position.

This is accomplished by having one of the legs of the drop wire on one side of the slot through which the drop wire bars pass'broken with a 'sleeve member slidably mounted thereon and movable to close the gap between the two legs of the parted side of the drop wire so that this leg can be bent sidewise and installed over the drop wires and then the telescopic sleeve can he slipped down to bridge the gap and to cover the broken place in the drop wireand thus causes the drop wire to be to all intents and purposes operable in the same manner as if it were made from one fiat piece of material with a perforation formed therein as has heretofore been done.

Some of the objects of the invention having been stated, other objects will appear as the description proceeds when taken in connection with the accompanying drawings, in which Figure 1' is an isometric view of a portion of a certain type of .drop wire assembly and bars and showing my invention applied thereto;

Figure 2 is an elevation of the top portion of one of the drop wires with a part broken away and showing my invention associated therewith.

Referring more specifically to the drawings, the numeral Ill indicates a portion of one side of the frame of a loom, the other side being identical but not shown.

This portion of the frame of the loom has a vertically disposed slot ll therein in which is mounted a bar l2 which is U-shaped in cross section. The U-shaped bar is secured in position at each end thereof by any conventional means such as a screw or bolt I3. Oscillatably mounted in a channel in the U-shaped bar I2 is a sliding bar M which has an elongated slot l5 therein slidably penetrated by the bolt or screw Hi. This bar H8 is associated with the stop motion mechanism and, as is conventional, the U-shaped bar on each side thereof has notches lfi'which are coinciding and the oscillating bar It has a plurality of notches ll. There are thousands of drop wires 20 mounted for vertical sliding movement on the bars l2 and M and each of these drop wires has an elongated slot 2! which is of greater vertical height than the tota1 vertical height of the bars 12- and it. These drop wires each have a, hole or eye 23 therethrough through which a strand of warp 24 passes, only two of the many drop wires being shown.

In the conventional drop wires, the same are made from a fiat piece of sheet steel with the slot 2i and hole or eye 23 stamped therein and thus providing

side portions

25 and 26. In the present invention, one of the side portions, such as side portion '26, is severed as at 21 and being of spring steel, the side portion 26 can be moved sidewise to remove the drop wire from the bars l2 and I4 and likewise a new drop wire can have its side portion 26 sprung to insert the same in case one of thedrop wires should be damaged. However, the

main purpose of the present drop Wire is to use it in association with conventional drop wires so that in case a conventional drop'wire should have to be replaced, one of the improved drop wiresdrop wire has been installed and the side portion 26 is in alignment with the stub portion 28, then the sleeve 30 can be slid from the position shown in the remote portion of Figure 1 to the nearer drop wire in Figure 1 or to the position shown in Figure 2 which will firmly hold the side portion 26 and the stub portion 28 of the drop wire in aligned position. This sleeve 30 is of very thin material. preferably being of much thinner material than shown in the drawings, but substantial thickness is shown in the drawings in order to properly illustrate the same.

It is thus seen that I have provided a replaceable drop wire for stop motions in looms which can be quickly inserted in place of a damaged drop wire and thus saving a great amount of labor and material in that a loom can quickly be placed again in operation after a defective drop wire occurs.

In the drawings and specification there has been set forth a prefer-red embodiment of the invention, and although specific terms are employed, they are used in a generic and descriptive sense only, and not for purposes of limitation, the scope of the invention being defined in the claims.

I claim:

1. In a loom having a stop motion mechanism comprising a bar or bars for supporting a plurality of drop wires, each of said drop wires having an elongated vertically disposed slot of greater height than the height of the supporting bar, adapted to be penetrated by the supporting bar, each drop wire having a hole therethrough through which the warp yarn is passed for holding-the same in elevated position, one side portion of the "drop wire on one side of the elongated slot being severed and a sleeve slidably mounted on said severed side portion and adapted to be moved over the severed portion to hold the two portions in alignment with each other, said sleeve also being slidable toa position to where it will not cover the point of severance so that the drop wire may be removed from the supporting bar.

2. As an article of manufacture, an insertable warp stop motion detector comprising a thin, flat metal body having a warp eye and an elongated slot between the eye and the upper end of the body thus forming two side portions, one of the side portions being parted and a sleeveslldable along the parted side portion and adapted to be moved over the parted side portion to hold the two portions together and also adapted to he slid from over the parted side portion to allow the detector to be inserted or removed from a supporting bar.

3. As an article of manufacture, an insertable warp stop motion detector comprising a thin, flat metal body having an elongated slot near one end and a centrally disposed eye through which a warp thread is adapted to be passed, the

metal body on one side or the elongated slot being severed and having a sleeve slidable over the severed portion to hold it in assembled position and said sleeve being slidable from over the point of severance to allow the detector to be removed from or installed on a supporting bar.

4. A stop motion detector drop wire having an elongated slot therein thus providing a side portion on each side of the slot, one of the side portions being severed transversly and a sleeve slidable along the severed side portion to cover the point of severance to hold the two sections of the said severed side portion in alighed position.

HARRY F. WEDDINGTON.

REFERENCES CITED UNITEDSTATES PATENTS Name Date Freudenthal Aug. 29, 1911 Number