US2270032A

US2270032A - Warp beaming machine

Info

Publication number: US2270032A
Application number: US368897A
Authority: US
Inventors: William V Boyd
Original assignee: CANADIAN COTTONS Ltd
Current assignee: CANADIAN COTTONS Ltd
Priority date: 1939-04-06
Filing date: 1940-12-06
Publication date: 1942-01-13
Anticipated expiration: 1959-01-13
Also published as: US2236486A

Description

Jan. 13, 1942.

w. v. BOYD WARP BEAMING. MACHINE Original Filed April 6, 1939 2 Sheets-Sheet 1 w WW 0 INVENTOR Jan. 13, 1942.

w. v. BOYD WARP BEAMING MACHINE 7 Original Filed April 6, 1939 2 Sheets-Sheet 2 INVENTOR Ml BOYD mag Patented Jan. 13, 1942 WARP BEAMING MACHINE William V. Boyd, Cornwall, Ontario, Canada, as-

signor to Canadian Cottons Limited, Montreal,

Quebec, Canada Original application April' 6, 1939-, Serial No.

266,431. Divided and this application December 6, 1940, Serial No. 368,897

3 Claims. (01. 28-51) This invention relates to improvements in warp beaming machines and has for its object to reduce the labor costs incident to operation of such machines. I

The conventional warp beaming machine requires the constant attention of an operator who must watch the warp closely and be prepared to stop the machine whenever necessary to remove leases or to remedy imperfections in the warp such as broken ends or snarls which, is permitted to pass unnoticed, give rise to various difiiculties and delays which materially increase the cost 'of operation.

The present invention provides a warp beaming machine equipped with automatic controls for stopping the machinewhenever a lease, broken end or snarl reaches a predetermined point in the travel of the warp from the tensioning rolls to the beam. This eliminates the necessity of keeping a constant watch on the warp and enables a single operator to take care of several machines.

The present application is a division of my copending application Serial No. 266,431, filed April 6, 1939.

Proceeding now to a more detailed description reference will be had to the accompanying drawings, in which: I

Fig. 1 is a side elevation of a warp beaming machine equipped with the automatic controls forming the subject matter of this invention.

Fig. 2 is an enlarged side elevation of a portion of the assembly appearing in Fig. 1.

Fig. 3 is a plan view of the warp showing one of the conventional leases employed to assist in maintaining the warp ends in their correct relationship. This view also shows a feeler element extending upwardly between adjacent warp ends so asto be engaged and operated 'by the lease.

Fig. 4 is a detail view.

Fig. 5 is a wiring diagram.

Fig. 6 is a large detail of a feeler switch.

As shown in these drawings, the warp 5 is passed around tensioning rolls 6 and then over guide rolls 1, 8 and 9 to the beam ID. The beam is rotated by contact with driving drum 1 I which, in turn, is driven from motor l2 through the agency of a conventional drive connection comprising pulley l3, belt l4, pulley l5, reduction gearing l6 and friction clutch I1. The starting and stopping of driving drum II is effected through the agency of the clutch operating lever I8-which carries part of clutch l1 and is intermediately pivoted to swing about the pivotal axis I9. One end of lever l8 carries the starting treadle 20. The other end of lever I8 is pivoted at 2| to the lower end of a vertically extending clutch releasing rod 22. When rod 22 is latched in the elevated position shown in Figs. 1 and 2,

clutch I! is engaged to complete the drive connection between motor I2 and beam driving drum ll. When the latch mechanism holding rod 22 in its elevated position is released, said rod drops to a lower position and permits lever I8 to release said clutch ll thereby stopping drum II and beam 10.

In the present instance rod 22 is shown latched in its elevated position by a latch mechanism comprising a rocker 24 intermediately pivoted to a bracket 25 mounted on the machine frame 26. One end 24a of rocker 24 is engaged in a notch 21 provided in rod 22. The other end 2417 of the rocker is connectedto frame 26 by a spring 28. When the machine is in operation rocker 24 is held in a horizontal position by reason of the fact that the end 24b is engaged beneath a projection 29 carried by the arm 30 of a bell crank lever 3 I. This lever 3| is pivoted to the machine frame at 32 and has its other arm 33 pivoted to the armature'34 of a-solenoid 35. A spring 36, connected between rod 22 and the machine frame 28 serves to pull said rod inwardly toward the engaging end of rocker 24. 'When solenoid is energizedar'mature 34 is pulled down and swings lever 3| inaclockwise direction so that projection 29 of said lever is swung clear of the adjacent end of the rocker. This frees the rocker for swinging movement in a counterclockwise direction about its pivot and permits rod 22 to drop to its clutch releasing position.

' According to one feature of the present invention solenoid 35 is energized to permit rod 22 todrop to its clutch releasing position whenever one of the leases A (Fig. 3) carried by warp 5 reaches a predetermined point in the travel of the warp from the guide roll 8 to the warp rattle 38. This is accomplished by the provision of an automatic feeler switch generally indicated at 39 in Figs. 1 and 5. The movable contact 39a of this switch is formed by the lower end of a 'feeler 40 which isintermediately pivoted at 41 to a suitable support 42. The upper portion of feeler 40 extendsupwardly between adjacent ends of the warp as shown in Figs, 3 so that it lies in the path of travel of. the leases. Each time a lease is moved against the, upper portion of the feeler the latter swings about the pivot 4| so that the lower contact end 33a engages the cooperating stationary switch contact 43 from which it is normally spaced by means of spring 44. The closing of switch 39 energizes the solenoid 35 so that armature 34 is pulled down to release the latch holding the clutch releasing rod in its elevated or clutch engaging position.

As shown in the wiring diagram (Fig. 5) the normally open switch 39 is connected to the

line wires

45 and 46 in series with solenoid 35.

When rod 22 drops to its clutch releasing position it serves to open a normally closed switch 41 which is connected across the

line wires

45 and 48 in series with the motor 48 of a fan 49. The opening of switch 47 is accomplished through the agency of a switch operating lever 15 having one end pivoted to a bracket 16 and the other end connected, by supporting spring 50, to the upper end of rod 22. When lever 15 is pulled down wardly by rod 22 the lever projection 15a acts against the switch member 47a to open switch 4! against the resistance of a suitable switch closing spring (not shown) contained in the switch casing.

From the foregoing it will be apparent that whenever a lease carried by the warp presses against the feeler 48 the beam l and fan 49 are brought to rest. The operator, after removing the lease in the usual manner, depresses the pedal 20 to swing the clutch lever l8 back to its clutch engaging position. During this movement of lever I8 rod 22 moves upwardly and is again secured in its elevated position by re-engagement of the end 24a of rocker 24 in notch 21. During this resetting of rod 22 spring 50 is raised to return the switch opening lever 15 to its original position and thus permits reclosing of switch 41.

The beam rattle 38 is suspended from a bracket by means of the chain 52 and bell crank lever 53. The beam rattle and its supporting bell crank lever 53 normally occupy the position shown in full lines in Fig. 1. In this position of the parts it will be noted that arm 54 of the bell crank lies below a normally open switch 55 mounted on bracket 5!. If there are any snarls in the warp as it approaches the beam rattle 38 these snarls will engage and force the beam rattle from the full to the dotted line position shown in Figs. 1 and 2. This movement of the beam rattle causes the supporting bell crank'53 to assume the inclined position shown by dotted lines 'in'F'ig. 1 with the result that the shorter arm 54 of the bell crank is moved against and closes switch 55. Since switch 55 is connected in series with solenoid 35 as shown in Fig. 5 it follows that the closure of this switch will energize the solenoid to release the rod 22 and stop the machine whenever the beam rattle is displaced to its dotted line position. When the operator has remedied the condition resulting in this stoppage of the machine the beam rattle 38 and its supporting bell crank 53 will resume their normal positions and permit reopening of switch 55.

It is also desirable to stop the machine when the warp is subjected to excessive tension caused by knotting or catching of the warp strands at some point in advance of the guide roll 1. To this end the roll I is journalled' in a slidably mounted frame 58 equipped with guide pins 59 working in guide openings 60 provided in the machine frame 25. The ends of the pins remote from frame 58 are connected by a cross bar 6| which carries the movable contact 62 of a normally open switch 53. Springs 59a encircle the guide pins 59 and bear against cross bar 6| to normally hold the contact 62 separated from a able abutment 69.

cooperating stationary contact 64. When the tension on the warp exceeds a predetermined value, the roll I and frame 58 are pulled to the right against the resistance of springs 59a so that switch 63 is closed by engagement of the movable contact 62 with the stationary contact 64. Since switch 63 is connected in series with solenoid 35 as shown in Fig. 5 it will be evident that the closure of this switch energizes the solenoid to permit the clutch releasing rod 22 to drop to its clutch releasing position.

When it is desired to stop the machine independently of the automatic controls this is accomplished through the agency of a hand lever 61. This lever is interinediately pivoted at 68 and is provided at its lower end with an adjust- When the upper end of lever 61 is swung to the right from the position shown in Figs. 1 and 2 the abutment 69 engages and forces rod 22 to the left so that said rod is moved clear of the rocker 24 and drops to its clutch releasing position.

A roller 10 secured to lever 61 below the pivot 63 is normally disposed in contact with a stationary roller 1| journalled in the machine frame 23. These rollers form part of a conventional hair pin stop motion the function of which is to release the rod 22 through the agency of lever 6'! whenever one of the conventional warp riding pins '13 is permitted to drop between the rollers H1 and II by breakage of one of the warp ends. Since this type of hair pin stop motion is well known further description thereof is not considered necessary to an understanding of the present invention. I

While I have described what I now consider to be the preferred embodiment of this invention it will be understood that various modifications may be resorted to within the scope and spirit of the invention as defined by the appended claims.

Having thus described my invention, what I claim is:

1. The combination with a warp beaming machine and its driving motor of a pair of guide pins passing slidably through openings provided in a frame member of said machine, a cross bar carried by said pins at one side of said frame member, springs encircling said pins between said cross bar and said frame member and normally serving to hold the cross bar at a predetermined distance from said frame member, a normally open switch comprising a stationary contact carried by said frame member and a cooperating movable contact carried by .said cross .bar, said pins being provided with warp engaging means through the agency of which the pins are moved to a switch closing position against the resistance of said springs when the tension on the warp exexceeds a predetermined value and means functioning in response to closure of such switch to disrupt the drive connection between said machine and motor.

2. The combination with a warp beaming machine and its driving motor of means for automatically disrupting the drive connection between said machine and motor whenever the tensioning of the warp exceeds a predetermined value, said means comprising a roller over which the warp is passed, a roller supporting frame .in which said roller is mounted, said frame being slidably supported by a frame member of said machine, .means normally holding said frame roller in a definite normal position, said means being yieldable to permit displacement of the roller and frame from said normal position when the tension on the warp exceeds a predetermined value, a switch comprising a stationary contact carried by said frame member and a cooperating movable contact carried by said roller supporting frame, said contacts being separated from each other in the normal position of the roller and the roller supporting frame but being positioned so as to be engaged with each other by the aforesaid displacement of the roller and roller supporting frame in response to excessive tensioning of the warp and means functioning in response to closure of said switch to disrupt the drive connection between said machine and said motor.

3. The combination with a Warp beaming machine and its driving motor of a roller over which the warp is passed, a roller supporting frame in which said roller is journalled, said roller supporting frame being positioned at one side of a frame member of said machine and being provided with guide pins passing slidably through openings in said frame member and projecting beyond the opposite side thereof, a cross bar carried by said pins and located at the side of the frame remote from said roller supporting frame, springs encircling said pins between said frame member and said frame, said springs normally serving to hold said cross bar at a predetermined distance from said frame member but being yieldable to permit movement of the cross bar toward said frame when the tension on the warp passing over said roller exceeds a predetermined value, a switch comprising a pair of normally spaced cooperating contacts respectively carried by said frame member and said roller supporting frame, said contacts being arranged to be engaged with each other to close the switch when the cross bar is moved a predetermined distance toward said frame member in response to excessive tensioning of the warp and