US2403548A

US2403548A - Stop motion

Info

Publication number: US2403548A
Application number: US565070A
Authority: US
Inventors: Plunkett Brian
Original assignee: Celanese Corp
Current assignee: Celanese Corp
Priority date: 1944-11-25
Filing date: 1944-11-25
Publication date: 1946-07-09
Anticipated expiration: 1963-07-09

Description

July 9, 1946.

B. PLUNKETT S'ror MOTION Filed NOV. 25, 1944 INVENTOR.

BRIAN PLUNKETT ATTO RNEYS Patented July 9, 1946 s'ror MOTION Brian Plunkett, Cumberland, Md., assignor to Celanese Corporation of America, a corporation of Delaware Application November 25, 1944, Serial No. 565,070

Claims.

This invention relates to textile machines wherein yarn is fed thereto in the form of a warp and wherein there is employed an electrically operated warp stop motion, and relates more particularly to an attachment for use with such machines for closing the circuit of the warp stop motion, upon breakage of a warp yarn, to halt the operation of the machine.

It is an important object of this invention-to provide a simple and efllcient device which may be readily applied to a machine wherein yarn is fed in the term oi. a warp, which will activate the stop motion oi the machine to halt the operation of the same upon breakageoi' a warp yarn.

Other objects of this invention, together with.

certain details oi construction and combinations 01 parts; will appeari'rom the iollowing detailed description.

While this invention may be employed with textile devices where the warp is knitted into a fabric, is sized, printed, dyed, or has any other textile operation performed thereon, the invention will be described in connection with its use with a warp knitting machine since it is particularly effective therewith.

2 is included in a suitable stop motion circuit (not shown). 7 l

The pans 9 and H are filled with a salt solution or any other suitabl electrolyte. Placed in the top oi the pans and extending the full width thereof are plugs It made of wood or any other suitable material and covered with a wick ii.

The wood plugs It are of such a size that when pushed into the top of the pans they seal the same sufllciently to prevent splashing. The lower portion of. the plugs, indicated by reference numeral l8, aresharply tapered and dipped for substantial portion thereof into the solution. of electrolyte. The topsoi plugs It are provided with longitudinal grooves it which are adapted to be filled with solution drawn upby the wicks for a purpose hereinafter set forth.

' When a warp yam breaks (the broken end being indicated by dotted line H) and the warp continues to unroll, the broken yarn drops on to the plugs It in the pans 9 and ii, soaking up the electrolyte and completing a. circuit. The

' solution in groove it maintains the top of the Figure 1 of the drawing is a diagrammatic view showing the attachment of the present invention, particularly with relation to the warp of being operated upon, and

Figure 2 is a perspective view showing the warp oi yarns passing over the device of the instant invention.

Referring now to the drawing. reference numeral I indicates a warp oi yarns which is' fed from the warp beam 2 of a warp knitting machine, which warp beam is supported on a shaft I suitably journaled in the warp knitting machine. The shaft 3 is driven by any suitable means (not shown) The warp of yarns is passed under an idler guide roll 4, is processed (in the present case warp knitted) at i, and the fabric web or treated web of yarns I is then passed over an' idler roller 6 and taken up at l on a take-up roller or shaft 8 driven in any suitable manner (not shown). Placed underneath the warp i and extending across the full width of the warp knitting machine are pans 9 and H which are electrically insulated from each other by suitable insulation I! placed between adjacent sides at said'pans. These pans are relatively small being about V2" by 1" in cross-section. Pans 9 and it are each provided with a copper wire ll r 1- .1. the full length thereoi', which wires are connected by suitable leads I to a switch box, ge era-ily indicated by reference numeral Ii, whi

wick il extremely moistso that the broken-yarn quickly takes up the solution so that the circuit closes very rapidly. The closing of the circuit operates a switch in switch box it reflecting contact in a relay of the stop motion circuit to shutofi the warp knitting machine. Itv has been found that the present device efiects a stoppage 4 oi the warp knitting machine in from 3 to 5 sec onds from the time of the yarn break.

It is tobe understood that the foregoing de. tailed description is given merely by way of illustration and that many variations may be made therein without departing from the spirit of my invention.

Having described my invention, what I desire to secure by Letters Patent is:

1. In a textile device for operating on a traveling 'warp oi yarns, means Ior stopping the travel of said warp upon breakage of a yarn thereof, said means comprising a pair ofvessels adapted to hold electrolyte, relatively stationary means in each of said vessels adapted to be in contact with said electrolyte and to be wetted thereby, a switch in a stop motion circuit, and an electrical connection between said vessels and said switch, the construction and arrangement being suchthat a broken yarn upon coming into contact with said electroly-te-wetted means is wetted with electrolyte, thus closing the circuit operating the switch to effect a closing of the stop motion circuit and thereby halt'the operaion of the textile device.

4, electrolyte, relatively stationary means in each of said vessels adapted to be in contact with said electrolyte and to be wetted thereby, a switch in a stop motion circuit,-and an electrical connection between said vessels and said switch, the construction and arrangement being such that a broken yar'n upon coming into contact with said circuit, and an electrical connection between said v vessels and said switch, the construction and arrangement being such that a broken yarn upon coming into contact with said electrolyte-wetted plugs is wetted with electrolyte,

the stop motion circuit and thereby halt the operation oi the textile device.

3. In a textile device for operating on a traveling warp of yarns, means for stopping the travel of said warp upon breakage of a yarn thereof, said means comprising a pair of vessels adapted to hold electrolyte, plugs in each of said vessels, wicks covering said plugs, said wicks being adapted to be incontact with said electrolyte and being wetted thereby, whereby the electrolyte is caused to wet the top of the plug, a switch in a stop motion circuit, and an electrical connection between said vessels and said switch, the construction and arrangement being. such that a thus closing the 4 circuit operating the switch to efiect a closing of broken yarn upon coming into contact with said electrolyte-wetted wick is wetted with-electrolyte, thus closing the circuit operating the switch to effect a closing of the stop motion circuit and thereby halt the operation of the textile device.

4. In a textile device for operating on a travcling warp of yarns, .means for stopping the travel of said warp upon breakage of a yarn thereof, said means comprising a pair of vessels adapted to hold electrolyte, plugs in each of said vessels, wicks covering said plugs, said wicks being adapted to be in contact with said electrolyte and being wetted thereby, whereby the electrolyte is caused to wet the top of the plug, means in said plug adapted to receive and retain a supply of electrolyte, a switch in a stop motion circuit, and an electrical connection between said vessels and said switch, the construction and arrangement being such that a broken yarn upon coming into contact with said electrolyte-wetted wick is wetted with electrolyte, thus closing the circuit operating the switch to effect a closing of the stop motion circuitnnd thereby halt the operation of the textile device.

5. In a textile device for operating'on a travcling warp of yarns, means for stopping the travel of said warp upon breakage of a yarn thereof, said means comprising a pair of vessels adapted to hold electrolyte, plugs in each of said vessels, wicks covering said plugs, said wicks being adapted to be in contact with said electrolyte and being wetted thereby, whereby the electrolyte is caused to wet the top of the plug, a groove in said plug adapted to receive and retain a supply of electrolyte, a switch in a stop motion circuit, and an electrical connection between said vessels and said switch, the construction and arrangement being such that a broken yarn upon coming into contact with said electrolyterwetted wick is wetted with electrolyte, thus closing the circuit operating the switch to effect a closing of the stop motion circuit and thereby halt the operation of the textile device.

6. In a textile device for operating on a traveling warp of yarns, means for stopping the travel of said warp upon breakage of a yarn thereof, said means comprising a pair of vessels extending the full width of said warp and adapted to hold stop motion circuit, and an electrical connection between said vessels and said switch, the construction and arrangement being such that a broken yarn upon coming into contact with said electrolyte-wetted longitudinal plugs is wetted with electrolyte, thus closing the circuit operating the switch to efiect a closing of the stop motion circuit and thereby halt the operation of the textile device.

8. In a textile device for operating on atravcling warp of yarns, means for stoppi the travel of said warp upon breakage of a yarn thereof, said means comprising a pair of vessels extending the full width; of said warp and adapted to hold electrolyte, longitudinal plugs in each of said vessels, wicks covering said plugs, said plugs havingtaperedportions having a length suiflcient to dip into-. said electrolyte whereby said wicks are wetted by said electrolyte and cause the top of the plug to be wetted by capillarity, a switch in a stop motion circuit, and an electrical connection between said vessels and said switch, the construction and arrangement being such that a broken yarn upon coming into contact with said electrolyte-wetted wick on said longitudinal plugs is wetted with electrolyte, thus closing the circuit operating the switch to eiTect a closing of the stop motion circuit and thereby halt 'the operation of the textile device. a 9. In a textile device for operating on a traveling warp of yarns, means for stopping the travel of said warp upon breakage of a yarn thereof, saidmeans comprising a pair of vessels extending the full width of said warp and adapted to hold electrolyte, longitudinalplugs in each of said vessels, wicks covering said plugs, said plugs having tapered portions having a length sufllcient to dip into said electrolyte whereby said wicks are wetted by said electrolyte and cause the top of the plug to be wetted by capillarity, means in said plug adapted to receive a and retain a supply of electrolyte, a switch in a.

stop motion circuit, and an electrical connection between said vessels and said switch, the construction and arrangementbeing such that a broken yarn upon coming into contact with said electrolyte-wetted wick on said longitudinal plugs is wetted with electrolyte, thus closing the circuit operating the switch to effect a closin of the stop motion circuit and thereby halt the operation of the textile device.

10. In a textile device for operation on a traveling warp of yarns, means for stopping the travel of said warp upon breakage of a yarn thereof, said means comprising a pair of vessels extending the full width of said warp and nection between said vvessels and said switch, the

construction and arrangement being that a broken yarn upon coming into contact with said electrolyte-wetted wick on said longitudinal plugs is wetted with electrolyte, thus closing the circuit operating the switch to effect a closing of the stop motion circuit and thereby halt the operation of the textile device.

' BRIAN PLUNKE'I'I.