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Publication numberUS943944 A
Publication typeGrant
Publication dateDec 21, 1909
Filing dateJul 23, 1906
Priority dateJul 23, 1906
Publication numberUS 943944 A, US 943944A, US-A-943944, US943944 A, US943944A
InventorsJoseph T Leach
Original AssigneeJoseph T Leach
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Stop-motion for drawing-frames.
US 943944 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)



943,9Q L Patented Dec. 21,1909.

cs C 0 1- I V V E E1] WITNESSES: (Ina 1,70 TL Z INVENTOR I I By 9% ATTORNEY Uh ltll) STAT Pi iftlilhl ill" tlll lllltllit JOSEPH T. LEACH, OF FALL RIVER, MASSACHUSETTS.


To all whom it may concern:

. Be it known that. l, .Tosnen 'l. Linen, a citizen of the lnited States oi America. and a resident of Fall River. in the county of Kristel and Commonwealth of iiiassa dmsetts, have ii'ivcnted an Improvement in Stop-Motions tor l)rawing- Frames, of which the following description, in connection with the accompanying drawings, is a specification, like characters on the drawings representing llh'thPtlliS in the diilerent figures and in the description.

This invention relates to electric stop motions for drawing frames and other textile machinery in which a sliver of cotton or other fibrous material is passed between the rolls, and has for its object to stop the frame automatically in case the rolls become clogged. It is especially applicable to the clearer roll of a drawing frame and is shown applied thereto.

In the annexed drawings Figure l is a diagrammatic side view of the drawing frame showing the principal parts. l'ig. i is an enlarged side view ot my device ap plied to the clearer roll on the drawing l'rame. Fig. 3 is a l'ront view of the corn tact plate showing the insulation thcrco'ti t'rom the frame l ig. ii is an end view (it the at'ljustable contact piece.

.iis the frame (it the machine. it is electrically connected with one. pole of the battery K.

ll is a plate which is insulated from the frame oi the machine by the insulation .l and is connected through the stoppiug' ineclianism X with the other-pole of the battery.

The electric roll I) is insulated -l'rom the frame and is electrically connected through the stopping, mechanism with the same pole of the battery as the insulated plate ll.

Several forms of electrically operated devices tor stoppin a drawing frame are in common use, any one of which may be used.

I have t'liagrammatically indicated such device. by X.

The bracket 13 is fastened to the frame and is in electrical connection therewith. l t. carries the bearing lever C which is pivoted at-t') and is in electrical connection with the frame A and bracket; 13. (J has near its front end a depression c which carries the hub c" of the clearer roll l). The clearer roll E runs in contact. with the electric roll D over which runs the presser roll l The Specification of Letters L'Eatent.

Application filed July 23, 1906.

Patented Dec. 21, l 909.

Serial No. 327,260.

rea r end of the hearing lever U is shaped into a ball 1- suilicieutly l'ieavy to overcome the weight: of the clearer roll 1* and hold ii in contact with l). The clearer roll i is of non-comlucting material and thus interrupts the circuit between the insulated electric roll I) and the bearing lever C.

The operation of the machine is as follows: When the sliver of cotton wraps on the clea'rer roll, l'l or the electric roll l) it forces :ll down overcoming the weight of the hall 1: until the contact. bar c is brought into contact with the insulated plate I-I thereby completing the circuit through X and stopping the machine.

In all other \stop motions for drawing frames with which I am acquainted the machine will run without the clearer roll on. But in my improved stop motion the machine will not run if the clearer roll is removed, because in such case the weight of the ball 0 lifts the front of C at 0 into contact with the electric roll D, thereby again completing the circuit and stopping the machine.

is a slotted Contact piece which is mounted on the back of the ball 0' and is held in adjustment by the set-screw 0 It furnishes means for regulating the point at which the electrical contact is made when 0' is forced nova rd by the sliver of cotton wrapping on the clearer roll E, or the clec-' tric roll D.

Having thus described my said invention I claim:

1. In an electric stop motion, an electric circuit, a movable roll supported by a lever cotinterweighted to retain said roll in an oyw-rative position, a counterweighted lever pivoted on a bracket carried by the frame of the machine, a. contact plate in the path of said lever and insulated therefrom, andv means actuated by said circuit; for stopping I I L'Oo the machine when said lever contacts with said contact )late. 1

2. In an electric stop motion, an electric circuit, an electric roll in circuit. with one pole ol. the battery, a clearer roll, a lever in circuit with the other pole of the bat ery engaging said clearer roll and adapted to contact with said electric roll when said clearer roll is removed, and means for stopping the machine actuated by said circuit when completed by the contact of said lever with said electric roll.

3. In an electric stop motion on electric touched thereby when the roll supported by circuit a roll supported upon a counterndapfed to be moved by said roll when the weighted lever, said ievei' being adapted to sliver wraps on said roll and make a contact toueh an electric roll and thereby to coincompleting said circuit and also adapted to piete said circuit when the roll carried by said lever is removed, a contact piece insulated from said lever and adapted to be said roll is removed, and means actuated by said ("m-mt for stopping Hie machine.


said lever is removed, and means actuated by said circuit for stopping the machine.

4. In :an' eieciric stop motion an electric g ciicuit, a roll, a lever engaging said 1-011 and I Witnesses V EDWARD A. GRACE, A. E. RENAUD.

make a contact completing said circuit when 15

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2450738 *Apr 2, 1946Oct 5, 1948Russell Marshall ERoller clearer stop motion
US5191686 *Feb 13, 1991Mar 9, 1993Lindauer Dornier GmbhApparatus for protecting stretching rollers in synthetic film stretchers
US5381651 *Aug 21, 1992Jan 17, 1995Fritz StahleckerArrangement for monitoring the lap formation on drafting units of a spinning machine
Cooperative ClassificationD01H13/1625