US2236485A - Warp beaming machine - Google Patents

Description

March 25, 1941. w. v. BOYD WARPBEAMING MACHINE 2 Sheets-Shet 1 Filed April 6, 1939 INVENTOR WY B OYD B .gzw

TTORNEY March 25, 1941. w v BOYD WARP BEAMING MACHINE Filed April 6, 1939 2 Sheets-Sheet 2 R a; T1 R uwwm mmflm WW2 w FIG? Patented Mar. 25, 1941 UNITED STATES 2,236,485 WARP BEAMING MACHINE William V. Boyd, Cornwall, Ontario, Canada, as-

signor to CanadianCottons Limited, Montreal,

Quebec, Canada Application April 6, 1939, Serial No. 266,431

3 Claims.

This invention relates to improvements in warp beaming machines and has for its object to reduce the labor costs incident to operation oi such machines.

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, if 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 machine whenever 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 Q of keeping a constant watch on the-warp and. enables a single operator to take care of several machines.

Proceeding now to a more detailed description reference will be had to the accompanying drawings, in which- 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 as to 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 H]. The beam is rotated by contact with driving drum l l which, in turn, is driven from motor l2 through the agency of a conventional drive connection comprising pulley !3, belt l4, pulley I5, reduction gearing i 6 and friction clutch l 7. The starting and stopping of driving drum II is efiected through the agency of the clutch operating lever l8 which carries part of clutch I! and is intermediately pivoted to swing about the pivotal axis l9. One end of lever I8 carries the starting treadle 2B. 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 ii is engaged to complete the drive connection between motor I2 and beam driving drum H.

60 When the latch mechanism holding rod 22 in its elevated position is released, said rod drops to a lower positionand permits lever Hi to release clutch l1 thereby stopping drum II and beam H].

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 240, of rocker 24 is engaged in a notch 2'! provided in rod 22. The other end 241) of the rocker is connected to 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 2412 is engaged beneath a projection 29 carried by the arm 30 of a bell crank lever 3|. 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 26, serves to pull said rod inwardly toward the engaging end of rocker 24. When solenoid 35 is energized armature 34 is pulled down and swings lever 3| in a clockwise 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 acounterclockwise direction about its pivot and permits rod 22 to drop to its clutch releasing position. I

According to one feature of the present invention solenoid 35 is energized to permit rod 22 to drop 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 thewarpfrom 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 is intermediately pivoted at 4| to a suitable support 42. The upper portion of feeler 40 extends upwardly between adjacent endsof the warp as shown in Fig. 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 41 so that the lower contact end 39a engages the cooperating stationary switch contact 43 from which it is normally spaced by means of spring 44. The closing of switch 39 energizes solenoid 35 so that armature 34 is pulled down to release the latch holding the clutchreleasing rod 22 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 4B in series with the motor 48 of a fan 49.

The opening of switch 41 is accomplished through the agency of a switch operating lever having one end pivoted to a bracket 15 and the other end connected, by supporting spring 50, to the upper end of rod 22. When lever 15 is pulled downwardly by rod 22 the lever projection 15a acts against the switch member 41a. to open switch 41 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 the beam l0 and fan 43 are brought to rest. The operator, after removing the lease in the usual manner, depresses the pedal 23 to swing the clutch lever I8 back to its clutch engaging position. During this movement of lever la red 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 sprin 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 5| 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 Fig. 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 I. To this end the roll 1 is journalled in a slidably mounted frame 58 equipped with guide pins 59 working in guide openings 60 provided in the machine frame 26. 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 63. Springs 59a encircle the guide pins 59 and bear against cross bar 6| to normally hold the contact 62 separated from a cooperating stationary contact 64. When the tension on the warp exceeds a predetermined value, the roll 1 and frame 58 are pulled to the right against the resistance of springs 59:: 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 intermediately pivoted at 68 and is provided at its lower end with an adjustable abutment 69. When the upper end of lever 61 is swung to the right from the position shown in Figs. 1 and 2 the abutment E9 enages 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 68 is normally disposed in contact with a stationary roller H journalled in the machine frame 26. 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 61 whenever one of the conventional warp riding pins 13 is permitted to drop between the rollers T0 and H 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.

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.

I claim:

1. The combination with a warp beaming machine and its driving motor of a normally open switch arranged to be engaged by a lease carried by the warp when said lease reaches a predetermined point in its travel toward the beam rattle and means functioning in response toclosure of said switch to disrupt the drive connection between said machine and said motor.

2. The combination with a warp beaming machine and its driving motor of a normally open feeler switch arranged to be engaged and closed by one of the leases carried by the warp when said lease reaches a predetermined point in its travel toward the beam rattle, a solenoid connected in series with said switch so as to be energized by the closure of said switch, and means functioning, in response to energization of said solenoid, to disrupt the drive connection between said machine and said motor.

3. In combination, a warp beaming machine, a motor for driving said machine, a drive connection between said machine and motor including a clutch and a clutch releasing rod, the latter normally tending to a clutch releasing position, a releasable latch device normally arranged to latch said clutch releasing rod in clutch engaging position, a latch control solenoid adapted, when energized, to release said latch device to permit said rod to move to its clutch releasing position, a normally open switch adapted to be closed to energize said solenoid whenever a lease carried by the Warp reaches a predetermined point in its travel toward the beam rattle of the warping machine, the movable contact of said switch extending upwardly between the warp ends in position to be engaged by said lease.

WILLIAM V. BOYD.

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