US1372556A

US1372556A - Electrical stopping device

Info

Publication number: US1372556A
Application number: US336290A
Authority: US
Inventors: Albert H Sawtell
Original assignee: Individual
Current assignee: Individual
Priority date: 1919-11-07
Filing date: 1919-11-07
Publication date: 1921-03-22
Anticipated expiration: 1938-03-22

Description

A. H. SAWTELL. ELECTRICAL STOPPING- DEVICE.

APPLICATION mmuov. 7. 1919. 1,372,556.

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mlm||| A. H. SAWTELL.

ELECTRICAL STOPPING DEVICE.

APPLICATION FILED NOV. 7, I919.

1,372,556, Patented Mar. 22, 1921.

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INV'ENTOR QM BY ATTORNEY T all whom it may concern UNITED STATES PATENT, OFFICE.

ALBERTH. sawrnm, or rnovinnncn, nnonnismmni ELnc'rnIcA strorrmcnnv cn.

Be it known that I, ALBERT I-I. SAWTELL, a citizen of the United States, residing. at Providence, in the county of Providence and State of .Rhode Island, have invented certain new andnseful Improvements in Electrical Stopping Devices, of which the following is a specification.

My invention relates to electric stopping devices for a member. winding threads or filaments; I

The essential objects ofcmy invention are, adaptability for embodiment in a ball governing device for the delivery of threads or filaments fromjrotary members, such as spindles; to stop delivery instantaneously; and to attain this action by means which lightly contacts with the filaments, whereby my device may be utilized notfonly for ordinary threads,but for infinitesimal .filaments, such as silk, which are too delicate to be capable of supporting the weight and withstanding the abrasion of gravity drop wires. Further objects ofmy invention will appear from an examination of the draw ings and thefollowing description.

My invention consists, therefore, i in the means and mechanism for attaining the objects and producing theresults above specified and suggested, substantially as herein after claimed. 1 i i i In the drawingsillustrating the principles of thisinvention and one mode of applying those principles, and which drawings constitute a part of this specificatiom:

Figure 1 is a front elevation of a ball governor delivery device embodying my invention, f I i Fig. 2 acentral vertical section, partially in side elevation, of the same,

mechanism effected; by the operation of my cops," and the like together with their respective guides and controllers.

on the rail 7 isva metalblock orbody 8 in- Mounted tegral with a base 10 having1a channel 11 to receive the rail, and carrying a clamping Specif cation or Letterslatent. Patented Mar. 22, 1921. Application filed November 7,1919. serial No. 236,290.

of thebody,and a passage 18 in alinement therewith extends from the seat to the front face of the body. In thelatter is an eyelet19. A filament 20 from a spindle ex- I tends through the passages and eyelet, and beneath the ball16 which exerts the proper tension forcontrolling deliveryof the fila ment to the winding element. Beside the eyelet onthe front of the body is a loop guide eye 22 through which the filament passes to the. winding element. The lower portion of the body is retracted as at 23 and has a transverse bore 24c fast in which isasleeve 25 of insulating material which has threaded engagement with a screw27 projecting beyond thefaces of the body and having a head 28 upon its forward end. Uponuits rear

endare clamping nuts

30 and 31 bearing against a flange .32 on the insulating sleeve. In thefront face of the body abovethe passagelS, and, in this instance,slightlyto one side of a vertical line passing through the latter, is a screw 34: projecting from the .face of the body and having a head 35. .A swingingarmfi? of light wire, has at itsupper end an: integral loop :or coil '38 loosely surrounding the screw or'pin 34.. The Wire ofthe coil is continued in this instance to form an arm 39 disposed at an angle to the arm 18 and in this instance terminatesin a loop lO. The arm 37 is'ofsufiicient.length to contact with themember 27 when swinging in an arc. Normally it is supported by the. filament 20; in the position shown in broken linesin Fig. 1, but ifthe filament should break the arm would swing intoengagementwith the member 27. While the device is operative in theabsence of thearm 39 and loop LO/the device is much more effective by the presence as these act asa counterbalance and insures against the arm 37 rebounding when it first strikesthe member 27. 1 I j 1 Thearm 37 makes and breaks an electric circuit whichkcontrols the operation of the winding member. g The latter may be any convenient rotary member such as a spool, reel, or beam, andsuch member may be supported, driven, started, or stopped by any preferred structure or mechanism. In the construction illustrated in Fig. 4 the winding member is a reel 42 fast on a shaft 43 ournaled in supports 45 upon a base 46. eripheral teeth .48 on the reel engage a gear 49 fast to a driving shaft 50 also journaled in the supports. The shaft 50 is driven by a motor or belt. In this case a driving wheel 51 on the shaft is adapted to receive a belt for driving purposes. Rigid with, pinion 49 is one member 58 of a friction clutch whose cone element 54 is upon a sleeve 55 slidable on the shaft 50. A hand lever 57 is pivoted at its lower end upon a pin 58in a projecting portion 59 of the base, and engages the sleeve 55 by means of a .pin'fiO in the latter slidable in a slot 61 in the lever. A spring 63 engages at one end the lever 57, and at its other end a pin 65 in the base, and tends to draw the lever and cone from and out of engagement with the fast members 53 of the clutch and thus stop the rotation of the-winding member 42. An upturned finger 67 011 the lever 57 engages a downwardly projecting portion 69 of an armature '70 pivoted at'itseopposite end to a plate or bracket 72 fast to one of the supports. Attached to'the bracket is the magnet 74 of the armature which when emerged elevates the member and releases the starting and stopping lever 57. The magnet and armature are in a circuit controlled by the arm 37. 7 It has been found advantageous, but not imperative, to employ two electric circuits rather than one, since 'a current S0 strong as to most effectively operate the armature 70, is sometimes so excesslve asto overheat the arm 37. To ob- .viaterthis danger two circuits may be employed, When soemployed a second magnet 76 is mountedfor instance on the bracket 72 having its-armature 77 pivoted as at 78 to the plate, and carrying onsaid end an arm 79 having contact members 80 adapted to engage contactmembers 82 in an insulating block 83 on the plate 72, one of which is on 'a'circuit wire 84 e'Xtending'to a battery '85, and the other on a wire 86 extending to the magnet" 74. A wire 87 from the battery to the 'magnet 74 completes this circuit.

The magnet or translator'76 is in .circuit 1 and a wire 92 extending from the relay'and 55

nuts

30 and 31 in electrical contact with the member 27. This 'circuit is completed,

clamped at its'g'opposite end between the when the arm'37 engagesthe member 27, by the base .10, body 8, and member 34. 7

'It'will 'be observed that the circuit last described which immediately includes the governor is the first to operate, and that the member 76- may be employed as an operating magnet rather than as a relay, if it is desired to omit the auxiliary circuit first described containing the magnet 7 4.

No claim is made herein per 86 to the tension device herein disclosed, the same being shown, described and claimed in my copending application Serial No. 367,471.

claim 1. In a device of the character described, an electric circuit, a metallic governor body in the circuit, a pivot member in the body constituting one circuit terminal, a stop member in the body constituting the other terminal of the circuit, said body being provided with a thread delivery passage adjacent the terminals, and a metallic arm normally pendent and loosely pivotally mounted on the pivot member resting lightly against the filament and movable by gravity into direct contact with the stop member to close the circuit.

2. In'a device of the character described,

an electric circuit, a metallic governor body in the circuit, a pivot member in the body constituting one circuit terminal, a stop member in the body and insulated from said body constituting the other terminal of the circuit, said body being provided with a thread delivery passage intermediate said members, and a metallic arm normally pendent and loosely pivotally mounted on the pivot member resting lightly against the filament movable by gravity transversely of the passage into direct engagement with the stop member to close the circuit.

3. In a device of the character described, an electric circuit, a metallic governor body in the circuit provided with a transverse passage for deliveryof a thread, a pivot member in the body above the passage constituting one terminal of the circuit, a stop member in the body below the passage constituting the other terminal of the circuit, a guide in the body at one side of the passage adapted to receive the thread, and a metallic balance arm normally pendent and loosely pivotally mounted on the pivot member resting against the filament and supported by the thread intermediate the passage and guide and movable by a release from the thread into direct contact with the stop member to close the circuit.

4. In a device of the character described, an electric circuit, a metallic governor body in the circuit provided with a transverse passage for delivery of a thread, and with a vertical hole terminating in a semispherical seat in an intermediate portion of the passage, a ball in the seat adapted to rest on the thread, a thread guide on thebody adjacent the passage, a pivot member in the body above and at one side of the passage, a stop member below the passage, said members constituting the terminals of the circuit, and an arm normally pendent and loosely mounted on the pivot member adapted to rest lightly against and be supported by the thread and movable when released by the thread to gravitate into direct contact with the stop member to close the circuit.

5. In a device of the character described, an electric circuit, a metallic governor body in the circuit, a pivot member in the body constituting one terminal of the circuit, a stop member in the body constituting the other terminal of the circuit, said body being provided with a thread delivery passage adjacentthe terminals, a gravitating metallic arm normally pendent and loosely mounted on the pivot member adapted to directly engage the stop member resting lightly against the filament and released by breaking of such filament and to close the circuit, and a counterweight on the arm.

6. An electrically operated stop motion for winding machines comprising an electrical governor body provided witha passage for a thread, a pivot member on the body above the passage constituting one circuit terminal, a stop member in the body below the passage constitutlng the other circuit terminal, an arm normally pendent and loosely pivotally mounted on the pivot member normally resting lightly against and suspended by the thread and movable when released to gravitate and directly engage the stop member and close the circuit, a rotary winding member for drawing the thread through the passage, a stop lever controlling the winding member, a magnet armature also in circuit, and an armature operated by the magnet detachably enga 'ng the leverland disengageable by the closmg of the circuit.

7. An electrically operated stop motion for winding machines comprising a governor body provided with a passage for a thread and constituting a part of an electrical circuit, a pivot member on the body adjacent the passage constituting a circuit terminal,

a stop member on the body adjacent the passage constituting another terminal of the circuit, a counter balanced and normally pendent and loosely pivotally mounted on the pivot member normally resting lightly,

against and suspended by the thread and adapted to gravitate and directly contact with the stop member to close the circuit when released by the thread, a battery in the circuit, a rotary winding member for drawing the thread through the passage, a stop lever controlling the winding member, a second electrical circuit controlled by the translator, a battery in the second circuit of greater strength than the first batter a magnet also in the second circuit, an an armature operated by the magnet detachably engaging the lever and actuated by the closing of the circuit.

8. In a device of the character specified, a

pivoted member adapted to normally rest lightly against a filament, a stop mechanism, embodying electrical connections including a member against which said pivoted member drops into direct contact when the filament is broken, said loosely pivoted member having a portion extended beyond its pivot to serve as a counterweight and to prevent rebounding of said member when it strikes said electrically connected member.

9. In adevice of the character specified, a pivoted member having a coil loosely embracing a support therefor and normally supported by resting lightly upon a filament, a stop mechanism embodying electrical connections including a member against which said pivoted member drops and directly engages when the filament is broken, said coil being provided with an integral extension beyond its pivot and looped to form a counterweight.

In .testimony whereof I have affixed my signature.

ALBERT H. SAWTELL.