US669620A

US669620A - Electric warp stop-motion for looms.

Info

Publication number: US669620A
Application number: US4047800A
Authority: US
Inventors: John A Clark
Original assignee: Crompton and Knowles Corp
Current assignee: Crompton and Knowles Corp
Priority date: 1900-12-20
Filing date: 1900-12-20
Publication date: 1901-03-12
Anticipated expiration: 1918-03-12

Description

No 669,620. Patented Mar. l2, l90l; J. A. JJLARK; ELECTRIC WARP STOP MOTION FOR LOUMS.

(Application filed Dec. 20, 1900.)

(No lodal.)

2 Sheets-Sheet l l l l'l l -No. 669,620. Patented Mar. l2, I90l. J. A. CLARK.

ELECTRIC WARP STOP MOTION FOR LOOMS.

(Appliz-ation filed. Dec. 20, 1900.:

2 Sheets8hoat 2.

No Ilodal.)

' NITED rates ArnNr rrrcn.

JOHN A. CLARK, OF WORCESTER, MASSACHUSETTS, ASSIGNOR TO CROMPTON dc. KNOWLES LOOM WORKS, OF SAME PLACE.

ELECTRIC WARP STOPMOT|ON FOR LOOMS.

SPECIFICATION formingpart of Letters Patent N 0. 669,620, dated March 12, 1901.

Application filed December 20, 1900. Serial No. 40,478. (No model.)

To all whom it may concern: end view of a portion of a loom, showing parts Be it known that I, JOHN A. CLARK, a cit-iof the patented electric warp stop motion zen of the United States, residing at WVorces' above referred to sufficient to illustrate the ter, in the county of Worcester and State of construction thereof and my supplemental Massachusetts, have invented certain new attachment combined therewith. Fig. 2 cor- 55 and useful Improvements in Electric Warp responds with the parts shown at the left in Stop-Motions for Looms, of which the follow- Fig. 1, except that my supplemental attaching is a specification. ment is shown in its opposite position when My invention relates to electric warp stopthe electric current is broken. Fig. 3 is an IO motions for looms, and more particularly to edge view of the parts shown in Fig. 2 look- 60 a supplemental attachment or mechanism to ing in the direction of arrow at, same figure. be combined with or applied to any well- Fig. eshows a front view of my supplemental known style of electric warp stop-motion for attachment looking in the direction of arrow looms. b, Fig. 5. Fig. 5 is an edge view looking in The object of my invention is to providea the direction of arrow 0, Fig. 4; and Fig. 6 65 supplemental attachment or mechanism of corresponds to Fig. 5, but shows the attachvery simple construction and operation adaptment in its outer position when the electric ed to be combined with any ordinary style of current is broken. Figs. 4, 5, and 6 are shown electric warp stop-motion for looms by means on an enlarged scale.

of which the electric current can be tempora- In the drawings, Fig. 1 corresponds with 70 rily broken, if desired, by the operator at any Fig. 1 of the Patent No. 637,234, above retime during the operation of weaving, but ferred to, and the construction and operation especially after one or more threads have of the electric warp stop-motion shown corbeen tied up, making a slack in said threads, respond with the construction and operation this slack heretofore causing the loom to stop of the electric warp stop-motion shown and 75 again through the operation of the electric described in said patent, except that my supwarp stopmotion, the same as if a warpplementalattachment is combined therewith, thread was broken. as will be hereinafter described, to break the By means of my supplemental attachment electric current when desired, and therefore or mechanism, consisting, broadly, of a it will only be necessary to briefly describe 8o spring-actuated latch or lever combined with the electric warp stop-motion shown in the an electric warp-stop-motion mechanism, I drawings.

am enabled to prevent the automatic opera- In the accompanying drawings the same tion of the warp-stopping mechanism until reference-figures are used as in the drawings the slack in the loose threads, above referred of said patent. 85

to, has been taken up in the ordinary process 1 is the 100m side or frame. of weaving, as will be hereinafter fully de- 2is an angular bracketsecured to the frame. scribed. A corresponding bracket is secured to the I have shown in the drawings my suppleopposite side of the loom. (Notshown.) To mental attachment or mechanism for breakthe upper end of the bracket 2 is adjustably 9o ing the electric current combined with a wellsecured by a bolt 21 a bracket 22, and to the known style of electric warp stop-motion for upper end of said bracket 22 are secured the looms which is shown and described in United ends of a pair of lease-rods 24. The usual States Patent No. 637,234, of November 21, shipper 28 is formed of spring metal, as is 4.5 1899; butitwill be understood that my supplecustomary, and is secured at its lower end to 5 mental attachment or mechanism for breakthe front of the frame 1, as shown in Fig. 3. ing the electric current may be combined with 29 is the usual notched plate, by means of or applied to any other style of electric warp which the shipper28 is guided and also looked stop-motion for looms. in position in the notch to set the loom in Referring to the drawings, Figure 1 is an motion in the usual way through the beltshipper 30 and its operating-lever 31, the latter being forked at its outer end to loosely engage the shipper 28, as shown in Fig. 3.

The bracket 32 is bolted to the loom side 1 at the inner side of the shipper, and said bracket supports the magnet box or case 33, in which is located an electromagnet 34. At the upper front corner of the box or case 33, in suitable bearings 35, is pivoted an armature-lever 36, the inner end of which supports an armature 37 and the outer end of which may have a series of small holes 38 therein.

Loosely hung and adapted to swing on a stud 43, that projects horizontally from the side of the frame 1 below the guide-plate 29, is an L-shaped knock-0E lever 44, the lower horizontal end 44 of which projects laterally behind the shipper 28 when the shipper is in engagement with the notch in the guide-plate 29. In the lower part of the knock-off lever 44 is pivoted a gravity-latch 46, the free end of which extends inwardly and is provided with a notch or shoulder 47. A wire connector or link 49 connects the latch 46 with the armature-lever 36, so that there will be a unity of mot-ion between the latch 46 and the armature-lever 36.

It will be obvious that if the magnet attracts the armature 37, as when the circuit is completed, the armature-lever 36 will rise at its outer end and cause a similar movement of the latch 46, which being moved into the path of the lay (not shown) is struck thereby on its forward movement and, together with the knock-0K lever 44, is forced forward or toward the front of the loom, so that said knock-off lever 44, striking the shipper 28,

will disengage it from the notch in the guideplate 29 and permit it to immediately swing forward and operate the belt-shipper 30 to stop the loom in the well-known way.

The battery 50 is located in a convenient place, and from one of the poles may lead the insulated circuit-wire 51 and from the other the insulated circuit-wire 52, which lies between the flanges of the frame 1 and is supported where necessary by suitable eyes 53. The wire 51 passes to the magnet 34 and the wire 52 passes through a tubular bolt 5 and is secured to a binding-post (not shown) back of the bracket 2, which post is connected with the metallic contact-roll. (Not shown.)

All of the above-described parts correspond to similar parts shown and described in said Patent No. 637 ,234, to which reference is here made for a more detail description of the same, if desired.

1 will now describe my improvements, consisting of a supplemental attachment or mechanism, combined with the parts above described, to break the electric current when desired and prevent the operation of the electric warp-stop mechanism.

In the patent above referred to,No. 637,234, there is a stud 39 in front of the magnet box or case, which has a stationary contact-spring 40 thereon'and extending laterally therefrom in such a position with relation to the shipper 28 as to have an electric contact therewith when said shipper is thrown outward from and held in the locking-notch of the guideplate 29 and the loom setin operation. 'When the shipper is in its outward position, as above described, and in engagement with the contact-spring 40 of said patent, the electric current, which passes through the shipper 28, the loom-side 1, bracket 2, and circuitrods (not shown) which guide the drop-bars, is completed by a drop-bar on one of the warp-threads dropping into contact with the metallic roll '10, (shown in said patent,) and there is nothing to prevent the completing of the circuit, and consequently the stopping of the loom when this happens. To prevent the completing of the circuit and the stopping of the loom, as above described, if desired, in.

case of slack in any of the tied-up warpthreads or for any other cause, I provide a spring-actuated latch or lever 76, of metal or some conducting material, which is pivoted on a stud 75, fast in a stand 32" on an extension 32' ofthe bracket 32. The latch 76 has at its upper end a screw-eye 77, to which is attached one end of a spiral spring 78. The other end of said spring is attached to a screweye 79 on the extension 32' of the bracket 32. The screw-eye 79 is in such a position relative to the axis of the latch 76 that the spring 78 will act-to hold the latch in its forward position in contact with the shipper 28, as shown in Fig. 5, 01' in its opposite position out of contact with the shipper 28, as shown in Fig. 6. The pivotal motion of the latch 76 is limited by two pins 80tand 80', extending out from the hub 76 of the latch 76 on opposite sides of the pin 81, fast in the stand 32,.said pins 80 and 80 coming in contact with the pin 81. An insulated circuit-wire 42 leads from a pole in the magnet 34 to a bindingpost 82 on the hub 76 of the latch 76. The latch 76 or the bracket 32, on which it is supported, is insulated from the loom-frame 1, so that the current cannotbe carried through said frame.

It will be seen that the latch 76 takes the place of the contact-spring .40 referred to above and shown and described in said Patent No. 637,234, and that when said latch 76 is in its forward position, in contact with the shipper 28, and a drop-bar on one of the warpthreads drops into contact with the metallic roll of said patent the circuit will be completed and the loom stopped, the same as in said patent-that is, the latch 76 forms a part of the electric circuit.

When the latch 76 is moved out of contact with the shipper 28, as shown in Figs. 2 and 6, by the operator, then the electric current is broken, and the shipper 28 will not be operated to stop the loom until said latch 76 is moved into contact therewith, as shown in Figs. 1 and 5.

The advantages of my improvements will be readily appreciated by those skilled in the art.

My supplemental attachment or mechanisrn'for breaking the electric current is of very simple construction and operation and easily combined with the patented electric warp stop-motion above referred to or with other styles of electric warp stop-motions, and the operator by simply moving the latch 76 outwardly or out of position to be engaged by the shipper 28 when the shipper is moved into position to start the loom can break the electric current and prevent the stopping of the loom by the electric warp stop-motion. When the loom has been run a sufficient length oftime to take up the slack warpthreads or for other causes, the operator can then move the latch '76 into engagement with the shipper 28 to render the electric warp stop-motion effective to stop the loom in case of the breaking of a warp-thread.

It will be understood that the details of construction of my supplemental attachment or mechanism and the particular manner of combining the same with the electric warp stop-motion shown in the drawings and above described may be varied, if desired.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. The combination with an electric warp stop-motion for looms, and the shipper-lever to stop andstart the loom, of a spring-actuated latch or lever, adapted to be moved out of engagement with the shipper-lever, and means to hold the latch out of engagement therewith, to break the electric circuit, and prevent the operation of the electric warp stopanotion to stop the loom, after the shipper-lever is moved to start the loom, substantially as shown and described.

2. The combination with an electric warpstop-motion mechanism, in which the movement of the shipper-lever to start the loom renders effective the electric warp stop-motion to stop the loom, of the shipper-lever, and a device adapted to be moved out of engagement with the shipper-lever, to prevent the operation of the electric warp stop-motion to stop the loom, and into engagement with the shipper-lever to permit of the operation of the electric warp stop-motion to stop the loom, substantially as shown and described.

3. The combination with an electric Warpstop-motion mechanism, in which the movement of the shipper-lever to start the loom renders effective the electric warp stop-motion to stop the loom, of the shipper-lever, and a spring-actuated latch or lever, adapted to be moved out of engagement with the shipper-lever, to prevent the operation of the electric warp stop-motion, to stop the loom, and into engagement with the shipper-lever to permit of the operation of the electric warp stop-motion, to stop the loom, substantially as shown and described.

JOHN A. CLARK.

Witnesses:

JOHN B. SYME, R. O. DOUGLAS.