US1683367A - Warper - Google Patents

Description

Sept. 4, 1928.

J. T. MELCHOR WARPER Filed Nov. 1924 2 Sheets-Sheet '1 Sept. 4, 19280 1,683,367. J. T. MELCHOR WARPER Filed Nov. 1924 2 Sheets-$heet 2 Patented Sept. 4-, 1928.

UNITED STATES l arnt ester...

JAMES TURNER MELCH OB, OF MOORESVILLE, NGRTH CAROLINA, ASSIGNOR TO SACO- SETTS.

WAR/PER.

Application filed November 4, 1924, Serial No. 747.785.

This invention relates to machines known as warpers. Such machines are commonly used in the textile industry for winding a multitude of individual strands of thread or yarn on a beam or ball.

It is the chief object of the invention to improve such machines with a view to reducing the attention required by them, and enabling the attendant'to care for a greater number of machines. The invention aims especially to provide means whereby such a machine may be brought up to normal speed, after being stopped, morerapidly than has been possible heretofore.

These and other objects of the invention will be readily understood from the following description when read in connection with the accompanying drawings, and the novel features will be particularly pointed out in the appended claims. 7

In the accompanying drawings,

Figure 1 is av side elevation of a machine embodying the present invention, certain of the parts being broken away to illustrate the construction more clearly i 2 is a view, partly in front elevation and partly in vertical cross section, showing the driving mechanism ofthe machine;

Fig. 3 is a cross sectional view on the line 3, Fig. 1; I V i Fig. 1 is an enlarged cross sectional view of a portion of the belt shipper bar and the stop which cooperates therewith; and

Fig. 5 is an end View of a portion ofthe stop.

In a typical arrangement for using a warper the strands of thread S, Fig. 1, are drawn from bobbins mounted on a creel (not shown) and are guided through a rear-comb 2, over and under the usual guide rolls'to a front comb 3, and thence are wound on the beam The beam of the. machine shown is driven by a drum 5 which is connected through gears 6 and 7 with the 'main shaft 8. Power is transmitted to the machine by a belt '10 arranged to run on either a high speed pulley 12, a low speed pulley 13, or an idle pulley 14. The high speed pulley 12 is secured fast on the shaft 8, but the low speed pulley 13; is mounted on a sleeve 15, Fig. 2. This sleeve-encircles the shaft 8 and carries a pinion 16 which meshes with a gear 17 fast on a coiuiter-shaft 18) A gear 19 secured on the shaft 18 meshes with another gear 20 which isloosely mounted on the end of the shaft 8 but is connected therewith through the usual one-way pawl and ratchet mechanism 21. Consequently, when the belt 10 is on the intermediate pulley 13the beam {i will be driven through the gear connections ust described but at a very much jlower speed than when the belt is on the high speed pulley 12. The idle pulley '14 is mounted to rotate freely on the sleeve 15.

-Forkthe purpose of moving the belt 10 from one pulley to another, a belt shifter is provided comprising a fork'22'that straddles the belt and is fixed in the outer end of a sliding bar 2 1. This bar issupported in' a bracket and has teeth on its lower surface meshing with a sector 26 secured on a. rock shaft 27. Another sector 28, also secured on this rock shaft, meshes with a rack 30 which i to keep the belt on the high speedpulley 12.,

This latch and the belt shiftingapparatus above described form parts of an automatic stop motion for stopping themacliine whenever a thread breaks, theaction of this mechanism being arranged to be initiated by the dropping of detectors or drop wires 35, Fig. 1; The connections for enabling these wires to cause the tripping of the latch 33 are not illustrated since they are not essential to an understanding of the present invention, are-well known, and form a part of av well known commercial beam warper. It will be understood, however, that whenever a thread breaks the detector 35 which it supports immediately drops, and this results in the tripping of the latch 33 and the consequent shifting of the beltlO on to the idle pulley 14;. 'The beam stops almost immediately thereafter. I

Between the front and rearcombs 3 and 2 the threads run over a .takeup roll or rise roll 36. This roll is supported at its op-, posite ends in the upper forked ends of two rack bars, one of which is shown at 37. Rolls v38 guide the bars 37 for up and down A COREQRATIOH OF MASSACHU- movement. The bar is urged upwardly by a weight 42 secured to one end of a chain 41 which is partly coiled around and is secured to azgrooved roll secured on a rock shaft 43, this shaft'also having secured thereto a pinion 44 which meshes with the teeth of the rack bar 37. Similar parts cooperate with the other rack bar at the opposite end of the roll 36. This arrangement, therefore, operates to take up any slack that occurs in the threads as they travel to the beam 4. The mechanism so far described is substantially like that of the usual commercial beam warper; When such a machine is run ning and is suddenly stoppeddue to the breaking of a thread, or other reason,

the spools from which the supply of thread.

is being drawn do not stop rotating as quick 1y as the beam; (lonsiderable'slack in the thread, therefore, is produced at this in stant and consequently the roll 36 rises to take up this slack. In starting the machine again the attendant or operator first depresses the treadle 31 far enough to shift the belt 10 on tolthe intermediate or low speedpulley 13 thus causing the beam 4 to rotate slowly. The treadle must be held in this position until the rise roli 36 has been 'de pressed or lowered to its normal running position before it is safe for the operator to shift the belt on to the high speed pulley and cause the machine to resume its normal running speed. The operator must keep her foot on the treadle during all this time and until the treadle has been depressed far enough to engage the-latch 33 with the fixed 31' and shiftthe belt immediately from the idle to the high speed pulley.

The additional mechanism provided for this purpose, as embodied in the machine shown, comprises a stop 46 pinned to a rod 47 which is supported in a bracket 48 for both rocking movement about its axis and also for sliding movement longitudinally of said axis. A spring- 50 tends to hold the stop 46 at the left-handextremity, Fig. 3, of its range of movement. One end 51 of this stop is weighted. so that so long as the stopis' free, this end will rest in contact withthe shipper 24, the latter part being grooved, as shown at 52, Fig. 4, to receive the weighted end of the stop. When the latch 33' is tripped by the automatic stop mechanism of the warper and the belt shipper 24 consequently is moved toward \the right, Figs. 2 to 4, due to the action of the weight 32, the sliding movement of the belt shipper will interrupted due to; the left hand end wall of the groove 52, Fig. 4. striking the weighted end 51 of the stop 46 and carrying this stop backwardiy against A the bracket 48. This movement is so proportioned that it stops the belt shipper with the belt on the low speed pulley 13: The motion of the beam, therefore, is not stopped but its speed is simply reduced. vThe parts remain in this condition until the rise roll has been moved into a predetermined position. That is, as "soon as the reduction in speed of the beam occurs,slack introduced into the threads'S due to the overrunning of the spools asabove explained", and con sequently the rise roll 36 is'moved u n'vardly by the weights 42 to take up this slack. The bobbins in the creel lose their momentum very quickly so that as the beam 4 continues to rotate slowly, it gradually reestablishcs normal tension on the strands of thread and thus lowers the rise roll 36 to its normal running position. As the rise roll is depressed the bar 37 is-correspondingly lowered, and during this movement a pin 54, which is secured in the bar, strikes the tail 55 of the stop 46' and swings this stop on its pivot, thus carrying the part 51 out of contact with the shipper As soon as his tripping of the stop occurs, the weight 32 immediately acts through the connections with the shipper to move the belt 10 on to the idle pulley 14 and the'be'am thereupon stops. I

It will thus be seen that the operation of the detector controlled stop motion is interrupted by the stop 51 when the belt has been shifted on to the slow'speed pulley, and the stop motion is not allowed to complete its action until the rise roll has been lowered to substantially its normal running position.

This entire action occurs in ample time to prevent the broken end; whichhas caused the stopping of the machine, from being wound on the beam. The operator, therefore, can piece up the broken thread and then shift the belt immediately on to the high speed pulley 12 where it will be held by thelatch 33. The pause or wait which has been necessary heretofore to bring the I rise roll down into normal position thus eliminated, I p I As soon as the stop is swung out of en ga ement with the shipper 24, the spring 50 slit es' the stop tower-mot to the left, Fig 3, carrying the part 55" out of contact with the pin 54. order to avoid any possibility of breakingthe stop due to engagement of the pin with the part 55 when the rise roll is moving upwardly, the tail piece 55 is ra e ward movement of it is transmitted directly to the stop, but if it should be engaged by the pin 5st as the latter moves upwardly it would simply move the tail piece idly.

It will now be appreciated that this invention substantially reduces the time required of a machine tender to put thema-v chine into normal operation again after it has been stopped. Consequently, an operator can tend more machines than otherwise would be possible. Furthermore, the parts added to the machine by the present invention are very simple in construction and can be manufactured and installed on a machine very economically. This is an important ad-v vantage from a practical standpoint.

Inasmuch as the strands of thread or yarn handled by the warper may be wound on either a beam or a ball, the term beam is used herein to include a ball. Also, in some warpers a drop rollis used to take up slack instead of a rise roll. The term rise roll, therefore, should be understood to include a drop roll or equivalent device for-taking up the slack, and where reference is made to the rise and fall of the rise roll, it should be understood to include the operativeinovement of the device that takes up the slack.

'lVhile I have herein shown and described the best embodiment of my invention that I have so far devised, it will be understood that the invention'may be embodied in other forms without departing from the spirit or scope thereof.

Having thus described my invention, what I desire to claim as new is:

1. In a warper having an automatic, detectorcontrolled stop motion, the combination of a rise roll, and mechanism under control of said rise roll for interrupting the operation of said stop motion after its action has been initiated and preventing the completion of said operation until the rise roll has been lowered to substantially its normal running position.

2. In a warper having an automatic, detector-controlled stop motion, the combination of a rise roll mounted for up and down movement, mechanism for interrupting the operation of said stop motion after its action has been initiated, said mechanism including a stop, and means arranged to be operated by the depression of said rise roll to trip said stop.

3. In a warper having an automatic, detector-controlled stop motion, the combination of a rise roll mounted for up and down movement, and mechanism cooperating with said stop motion to prevent'the complete stopping of the machineaft-er the action of saidstop motion has been initiated until the rise roll.has been moved down to substantially a predetermined position.

l. Ina warper having an automatic, dctector-controlled stop motion, the combination of a rise roll mounted for up and down movement, mechanism for interrupting the operation of said stop motion after its action has been initiated, and means for utilizing the downwardmovement of said rise roll to cause the operation tion to be resumed.

5. In a warper, the combination of a beam for holding a multiude of individual threads, mechanismfor revolving saidbeam, automatic means'for stopping the rotation of the beam under predetermined conditions, a

roll mounted to rise and fall and over which the threads are guided as they travel to or from the beam, automatlc' means for raising said roll to keep the threads under tension,

and meanscooperating with said stopping.

mechanism to cause the beam to be driven at a slow speed during the stopping operation and until the tension on said threads has forced said roll into substantially its normal running position. 1

"6. Ina warper, thecombination of a beam for holding a multitude of threads, mechanism for revolving said beam, a rise roll for taking up the slack in the threads as they travel to or'from the beam, mechanism for automatically stopping the of said stop mo-- iL-E individual rotation of the beam under predetermined" conditions, and means cooperating with said mechanism to ensurethe driving of the beam for such a length of time after the stopping operation has been initiated to apply sufficient tension to said threads to lower said roll beforethe beam is stopped.

7. In a'warper, the combination ofa beam for holding a multitude of individual threads, mechanism for driving said beam including'high speed, low speed, and idle pulleys, a driving belt cooperating with said pulleys, a 'beltshifter, for inovingsaid belt from one ofsaid pulleys to another, mechanism including a latch for holding said belt shifter normally with the belt on the high speed pulley, automatic means for vmoving said shifter when the latch is released to carry said belt across the low speed pulley on to theidle pulley, a stop for, interrupting said movement when the belt is on the low speed pulley, a roll mounted to rise and fall and over which the threads are guided as they travel to or from said beam, and

means operated by the downward movement I stop.

pulleys, a driving belt cooperating with said pulleys, a belt shifter for moving said belt from one of said pulleys to another, mechanism including a latch for holding said belt shifter normally with the belt on the high speed pulley, automatic means for moving said shifter when the latch is released to carry said belt across the low speedpulley on to the idle pulley, a stop arranged to engage said shifter and interrupt'saidmovement when the belt on the low speed vpulley, a rise roll over which the threads are guided as they travel. to 01' from the beam, bars supporting said roll for up and down movement, automatic means for-raising said roll to keep the threads under tension, and a pincarried by one of said bars and arranged to trip said 9. In a warper, the combination of a beam for holding a multitude of individual threads, mechanism for driving said beam including high speed, low speed, and idle pulleys, a driving belt cooperating with i said pulleys, a belt shifter for moving said belt from one of said pulleys to another, mechanism including a latch for holding said belt shifter normally with the belt on the high speed pulley, automatic means for moving said shifter when the latch is released to carry said belt across the low speed pulley on to the idle pulley, a swinging stop arranged to engage said shifter and interrupt said movement when thevbelt is on the low speed pulley, arise roll over which the *threads are guided as they travel to or from said beam, bars su iiporting said rise roll for up and down movement, automatic means for raising said roll to keep the threads under tension, and'a pin carried by one of said bars andarranged to trip said step, said step having a pivoted tail piece positioned for engagement with said pin and arranged to be moved idly by the pin as the latter moves up, but operative to cause movement of the entirestop when the pin engages it upon moving down.

' 10; In a warper, the combination of a beam for .holding a multitude of individual threads, mechanism for driving said beam including high speed, low speed, and idle pulleys, a driving belt cooperating with said pulleys, a slidable belt shifter for moving said belt from one of said pulleys to another, mechanism including a latch for holding said belt shifter normallywith the belt on the high speed pulley, automatic means for moving said shifter when, the latch is released tocarry said belt acrossthe low speed pulley on to the idle pulley, a stop mounted to swing into and out of engagement with said shifter-and to slide parallel to the shifter, said stop being weighted to cause it to swing into engagement with the shifter and to stop said movement of the shifter when the belt is on the low speed pulley, a rise roll over which the threads are guided as they t'avelto or from said beam, bars supporting said rise roll for up and down movement, automatic means for raising said roll to keep the threads under tension, a pin carried by oneof said bars and arranged to trip said step, and a spring tending to slide said stop out of cooperative relationship to said pin. 7

11. In a. warper, the combination 'of a beam, mechanism for revolving said beam at eith r a high or a low speed, means for automatically stopping'the rotation of said beam under predetermined conditions, and automatic means cooperating with said mechanism for ensuring the driving ofthe beam at its low speed for-a sufiicient length of t me immediately preceding the stopping of the beam to enablethe rise roll to move down to substantially its normal running position. Y a

12. In a warper, the combination of a beam for holding a multitude of individual threads, means for driving said beam at high or low speeds, a rise roll mounted for up and down movement and over which the threads are guided as they travel to or from said beam, a stop mechanism arranged to have its action initiated automatically under predetermined conditions, and additional means cooperatig with said stop mechanism to cause the stop mechanism to change the driving of the beam from a high to a low speed immediately following such initiation, and then to complete the stopping of the beam after said roll has been lowered following its rise due to th reduction in speed of the beam.

JAMES TURNER MELCHOR.

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