US1294482A - Stop-motion device for looms. - Google Patents

Description

P. P. C. KREMERS.

STOP MOTION DEVICE FOR LOOMS.

APPLICATION FILED NOV. 19. 19w

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STOP MOTION DEVICE FOR LOOMSJ APPLICATION FIUZD NOV. 19. 1917 1,29% 482. Patented Feb. 15%, mm.

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sans annier PETER PAUL C. KREMERS, F PHILADELPHIA, PENNSYLVANIA, ASSIGNOE TG JOHN AND JAMES DOBSON, INCORPORATED, 0F PHILADELPHIA, PENNSYLVANIA, A.

POBATION OF PENNSYLVANIA.

STOP-MOTION DEVICE FOR LOOMS.

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Specification of Letters Patent.

'Patented. Feb. 15?,

Application filed November 19, 1917. Serial No. 202,695.

To all whom it may concern:

Be it known that 1, PETER PAUL C. Knmrnas, a subject of the Emperor of Germany, residing in the city of Philadel hia, county of Philadelphia, and State of ennsylvania, have invented certain new and useful Improvements in Stop-Motion Devices for Looms, of which the following is a specification, reference being had to the accompanying drawings, forming a part thereof.

The object of my invention is to provide a novel, simple and efiicient stop motion device for looms, wherein a signal will be automatically actuated through an electric connection upon the breaking of any one of the warp threads associated therewith, and

the actuation of the signal will subsequently be automatically stopped when the starting and stopping lever of the loom is shifted into the stopping position; so that, upon the breaking of a warp thread, the signal will be actuated to notify the operative, who will then stop the loom by shifting the said lever and thereby automatically stop the actuation of the signal; I

With the above and related objects in view, my invention consists in the novel construction and combinations of parts hereinafter described and claimed.

In the accompanying drawings, illustrating my invention:

Figure 1 is a vertical section of suilicient of a loom embodying my invention to illustrate the same.

Fig. 2 is a longitudinal section of the tubular contact part showing the contact members therein. Y

hig. 3 is a top view of the parts shown in Fig. 2.

Fig. 4: is a view showing the warp-controlled contact making and breaking devices in section, the starting and stopping lever, the signaling device and the electric circuit diagrammatically.

Referring to the drawings, 2 designates the loom frame, 3 the breast beam, 4 the lay, 5 the harness, 6 the pile warp'threads, 6 the backing warp threads, 7 and 8 the rolls from which thewarp threads are drawn, 9 the take up roller for the woven fabric, and 10 the starting and stopping lever which controls the loom mechanism and which is adapted to be moved to the position shown by full lines in Fig. 4: to start the operation of the loom and to be moved to the position shown by dotted lines in Big; 1 to stopthe operation of the loom. lhe construction and operation of the parts thus far described are common and well known to persons skilled in this art. 7

When the loom is in motion, the lever 10 is in the full line position and rests against a contact arm 11 which is supported on the frame 2 and electrically insulated therefrom; and, When the lever 10 is moved to the dotted line position to stop the loom, the lever 10 is moved out of contact with the arm 11, for a purpose hereinafter er:-

plained.

Certain of the warp threads 6, and, if desired, all of them, are drawn over and supported and guided by a metal contact part 12 which is preferably made tubular in form, as illustrated. The tubular contactpart 12 extends transversely of the warp threads 6 beneath those supported thereby, and it is connected at its respective ends to rods 13 which are connected by wires 14.

to springs 15 carried by arms 16 which pro- 0 ject from a shaft 17 on the loom frame 2 to yieldingly support the tubular part 12. it will, of course, be understood that the part 12 may be supported in any convenient manner.

Extending centrally through the tubular part 12 is a metal rod 18 having its ends supported in blocks or heads 19 which are tact part or tube 12 for a purpose presently appearing.

Pivotally mounted on the rod 18 and located within the tube 12 is a series or" independently movable Contact members 22 which correspond in number with the warp threads 6 which are to control the stop mo tion signal hereinafter described. These cont-act members 22 are formed of thin sheet metal, and they extend outwardly from within the tube 12 through a longitudinal slot formed therein. The outer or free ends of the members 22 are provided with heads 24 having holes or openings 25 therein through which their warp threads 6 extend,

as clearly shown in the drawings. Normally the contact members 22 are suspended by their warp threads 6 in spaced relation to the upper and lower walls of the slot 28, as shown ,by full lines in Fig. 4, and, when warp thread breaks, its contact member 22 is thereby permitted "to drop down to the dotted line position shown in Fig. 4, in which it rests upon and makes electrical contact with the tube 12; To prevent the members 22 from accidentally making contact with the upper wall of the slot 23, ll provide the tube 12 with a protecting strip 28 of leather or other suitable insulating, material, as shown in Fig. 4:.

The lever 10 and tubular contact part 12 are electrically connected by the loom frame 2, shaft 17, arm 16, spring 15, wire 14 and rod 13, and this connection is indicated by a wire 27 in Fig. 4. Leading from the rod 18 to an electric signal 28, in the present instance a bell, is a wire 29, and leading from the signal 28 to a battery 30 is a wire 31. Leading from the battery 30 to the contact arm 11 is a wire 32,thus completing an electric circuit in which the signal 28 is located and which is normally open between the contact members 22 and the tubular contact part 12, as clearly shown in Fig. 4, and which may be opened and closed at another point, between the lever 10 and conarm 11, by shifting the lever 10, as previously explained. The signal 28 may be supported on the loom frame 2 or in any desired locality.

When the loom is in motion, the lever 10 is in the position shown by full lines in iand the members 22 are held by their were L threads 6 in the position shown by full lines in Fig. t. When, now, during the weaving operation, one of the warp threads 6, supporting the contact members 22, breaks, the member 22 supported thereby will drop downto the dotted line position and make electrical contact with the tubular contact part 12, and thereby close the electric circuit and actuate the signal 28, and thus convey to the loom attendant the information that a warp thread has broken. The attendant then shifts the lever 10 to the dotted line position, and thus stops the loom; and this operation automatically opens the electric circuit between the lever 10 and the arm 11 and stops the operation of the signal. This done, the attendant repairs the broken warp thread, which then again supports its contact member 22 in the full line position; and, thereafter, the attendant shifts the lever 10 into the full line position and into, 0011- aeeaesa tact with the arm 11, thus the learn and closing the circuit between the love and arm 11, and leaving the parts i' the line position tor a succeeding opera upon the brea-klng of another wa; tlrea ;threads, a contact part on said means, a movable contact member for each thread movably supported by and insulated from said means, each member being normally held by its thread in a position out or contact with said part and automatically movable upon the breaking of said thread into contact with said part, an electric circuit including said part and said members and normally open between them, and a signaling device in said circuit and operated therebywh'en the circuit is closed; a manually operative shipper lever in said electrical ci cuit, and a contact arm in said circuit said lever operative to engage said arm to close circuit when operated to start 1 e and to open said circuit when operated to stop the, loom.

2.111 a loom, the combination of m-ans for supporting and guiding a series of warp threads, acontact part on said means, series of independently-movable, contact members pivotally supported by said means, one member for each thread, each member being normally held by its thread out of contact with said part and being automatically movable upon the breaking" or" sai. read into contact with said part, an electric circuit in eluding said part and said members and normally open bet veen them, 1 device in said circuit operated thereby when the circuit is closed; a manm! e erative shipper lever insaid el ctrical cuit, and a contact in said circuit and said lever operative to engage'said arm to close said circuit when operated to the loom and to open said circuit when operated to stop the loom.

3. In a loom, the combination of for supporting and guiding a series or warp threads, a contact part on means, a movable contact member for each thread pivotally supported by said means, each member having an opening for confining its thread therein, and each member being nornially held by its thread out or" contact with said part and being automatically movable upon the breaking of said thread into contact with said part. an electric circuit including said part and said members and normally open between them, and a Sig? ling; devic in said circuit and operated tere-by when the circuit is closed. a manually operative shipper lever in said electrical circuit, and a contact arm in said circuit and said lever operative to engage said arm clo 3 said circuit when operated to start the loom and to open said circuit when operated to stop the loom.

4c. In a loom, the combination of means for supporting and guidinga series of warp threads, a contact, part on said means, a rod secured to and insulated from said means, a series of independently-movable contact members pivoted on said rod and electrically connected thereto, one member for each thread, each member being normally held by its thread out of contact with said part and being automatically movable upon the breaking of said thread into contact with said part, an electric circuit including said rod and said members and said part and being normally open between said members and said part, a signaling device in said circuit and operated thereby when the circuit is closed; a manually operative shipper lever in said electrical circuit, and a contact arm in said circuit and said lever operative to engage said arm to close said circuit when operated to start the loom and to open said circuit when operated to stop the loom.

5. In a loom, the combination of means for supporting and guiding a series of warp threads, including a contact element, a rod upon which said element is mounted and insulated therefrom, a series of movable contact members electrically connected and independently pivoted on said rod, each of said movable members having an opening through which a warp thread passes, and each member bein normally maintained by its thread out of e ectrical contact with said contact element and operating, upon the breaking of its contained thread, to automatically contact with said element, an electric circuit normally open and comprising said rod and said movable members and said contact element, a signaling device in said circuit and operated thereby when the circuit is closed; and means comprising a contact arm in said circuit and a shipper lever operative to engage said arm to close the circuit when starting the operation of the loom and to open said circuit when the actuation of the loom is stopped.

6. In a loom, the combination of means for supporting and guiding a series of warp threads, said means including a tubular contact part having a longitudinal slot therein and over which said threads extend, a rod extending longitudinally through said part and electrically insulated therefrom, a series of independently movable contact members pivoted on said rod and electrically connected thereto and extending outwardly through said slot, one member for each thread, each member being normally held by its thread out of contact with said art and being automatically movable upon t e breaking of said thread into contact with said part upon the breaking of its thread, an electric circuit including said rod and said members and said part and being normally open between said members and said part, and a signaling device in said circuit and operated thereby when the circuit is closed.

7.. In a loom, the combination or means for supporting and guiding a series of warp threads, said means including a tubular contact part having a longitudinal slot therein and over which said threads extend, a rod extending longitudinally through said part and electrically insulated therefrom, a series of independently movable contact members pivoted on said rod and electrically connected thereto and extending outwardly through said slot, one member for each thread, the outwardly extending end of each member having an opening for confining its thread therein, each member being normally held by its thread out of contact with said part and being automatically movable upon the breaking of said thread into contact with said part, an electric circuit including said rod and said members and said part and being normally open between said members and said part, and a signaling device in said circuit and operated thereby when the circuit is closed.

8. In a loom, the combination of means for supporting and guiding a series of warp threads, said means including a tubular con tact part having a longitudinal slot therein and over which said threads extend, a rod extending longitudinally through said part and electrically insulated therefrom, a series of independently movable contact members pivoted on said rod and electrically connected thereto and extending outwardly through said slot, one member "for each thread, each member being normally held by its thread away from one wall of said slot and being automatically movable upon -the breaking of said thread into contact with said wall to make electrical contact with said part, and a strip of insulating material adjacent to the opposite wall of said slot and preventing said members from making electrical contact therewith, an electric circuit including said rod and said members and said part and being normally open between said members and said part, and a signaling device in said circuit and operated thereby when the circuit is closed.

9. In a loom, the combination of a supporting frame, a contact arm secured thereto and insulated therefrom, a manually operative starting and stopping lever electrically insulated from said arm and movable to starting and stopping positions in alternate succession to start and stop the operation of the loom, said lever making contact with said arm when moved to its starting position and breaking such contact when moved to its stopping position, n electric circuit including said arm and said lever and being adapted to be broken by the movement of said unit being normally open at a certain point, thereby operated until the manuei mezins controlled by the breaking of a Warp of said lever to its stopping peer 1 thread. to close said circuit at said point, and Said circuit between said sei'cl. lever.

a signaling device in said circuit and oper- In Witness whereof, Iheve e ated thereby when the circuit is closed my hand this 12th day 01 Never; why when the loom is in motion said warp thread breaks said ciieuih will be A -Uri lever from Contact with said arm, said circlosed at said point and said simiel will.

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