US1209122A - Warping apparatus. - Google Patents

Description

H. D. COLMANi WARPING APPARATUS. APPLICATION FILED lUNE28|19l3.

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WARPING APPARATUS.

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H. D. COLMAN.

WARPING APPARATUS.

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WARPING APPARATUS.

APPLiCATlON FILED JUNE 28, 1913.

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WARP'ING APPARATUS. -APPLICATION FILED JUNE 28, I913- I Patented Dec. 19,1916.

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H. D. COLMAN. WARPING APPARATUS.

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UNITED STATES PAT N onmon.

MILLER, AND HARRY A. SEVERSON, GOPARTNEBS DOING BUSINESS AS BARBER- COLMAN COMPANY, OF ROCKFORD, ILLINOIS.

. c wanrme APPABATUS.

To all whom it may concern Be it known that I, HpwARn D. COLMAN,

a citizen of the United States, residing at Rockford, in the county of Winnebago and 5 State of Illinois, have invented certain new and useful Improvements in Warping Apparatus, of which the following is a specification.

This invention relates to apparatus for winding yarn from individual yarn masses upon a Warp beam. a

The invention is herein exemplified in an apparatus wherein theindividual yarn masses rotate to deliver the yarn, but certain features of the invention are applicable to other types of warping apparatus. The individual yarn masses may be of various forms, as,for example, spools or cylindrical cheeses. As ordinarily practised, such warping is conducted at a speed of about sixty yards a minute. If a much greater'speed than this is attempted, the cheeses or spools will ordinarily coast so much farther than the beam at the time of each stop that the to take up the slack. This difficulty may be overcome by putting a fly wheel on the warper so that the beam will coast farther than the farthest-coasting cheese, but this would cause the Warper to run so long after a thread breaks that the end of the broken thread would be wound under too far, and the warper tender would either not be able .to find the lost end at all, or if found, she would in most cases probably not be able to tie it up without introducing a crossed thread. In ordinary practice when the velocity is about sixty yardsaminute, the spools will coast perhaps three or four yards, and the beam about a. yard or a yard and a half less, the difference being taken up by the slacktake-uproll of the warper. If the velocity is to be increased to several times the usual speed, theamount of coasting will become very great since the coasting increases in proportion to the square of. the velocity, but

on account of the difficulty in finding and properly tying up the end of the'broken thread, it is impracticable to permit of a considerable increase in the amountof coasting of the beanu, It is also impracticable to allow. any considerable difference between the amount ofcoasting of the beam and the rise-roll or fall-roll of the warper is unable Specification of LettersPatent. Patented Dec. 19, laid. Application filed June 28, 1913. Serial No. 776,238.

amount of coasting of spools, since the amount of slack to be taken up by the slacktake-up roll cannot be materiallyincreased on account of limitations of space.

The object of this invention, generally stated, is to provide a warping apparatus by means of which Warping may be done at automatic means for adjusting the cheese brakes as the cheeses decrease in diameter; by providing automatic mechanisms for adjusting the beam brake to take care of wear and other factors aflect'ing the beam-brake surfaces, and for tightening the brake as the size (and hence the momentum) of the yarn mass on the beam increases, the beam-brake and its adjusting mechanism permitting an amount of coasting of the beam nearly uniformly amount of coasting of the cheeses at that stop; and by providing an individual thread slack-take-up device to take up the slack I which is caused by the fact that the cheeses coast a little more than does the beam.

PatentNo. 381,164, issued April 17, 1888, upon an applicationfiled by E. E. Orrell, discloses an attempt'to increase the speed; of warping by the use of intermittently-applied brakes on the yarn masses. In the Orrell .machine, however, the brakes are applied on the heads of the spools, and" no means is disclosed for making the braking effects on diflerent spools uniform with each other. On the contrary, with the construction disclosed in said patent the braking effect less at each stop than the average a practically constant efiieiency; by providing would be so great on some spools as to break the yarn running from them Without any braking, effectat all being supplied on other spools.

Orrell intended to use his device not only to prevent excessive coasting at the time of stopping, but also to make the tension on his yarn uniform from full to empty spools. Even if his device is adequate toaccomplish this latter purpose so far as the average ten- .45 To take up the difference sion of all the threads is concerned, there is no attempt to make the tension of the threads equal to each other; The flexibility of the pads M shown by Orrell would be in- "adequate to makethe tension of' the threads equal to each other, because .even though an absolutely uniform pressure were to all the spool brakes, there still would be a. very great variation in the friction, for the reason that the diiferent spool heads and their corresponding brakes would wear dif ,ferently, and would present surfaces of different characteristics as to friction, so that the braking effect would be different on different spools, and consequently the tension would be different in difierent threads. I avoid the difiiculties which render the Orrell constructionimpracticable, by means so arranged that the pressure applied to the brake on each cheese is furnished .by the weight of the .cheese itself, a large cheese being thus caused to stop nearly as quickly as a small one. At any given stop, each cheese coasts about the same amount as all the other cheeses, because the cheeses are all approximately the same size, and because of the char- *acter of the braking surfaces. One of these surfaces is the surface of the yarn mass and the other is a polished metal plate. This plate is polished to start with, and the rubbing of the yarn against it. in stopping keeps it bright, so that the surface condition of the plate remains very nearly constant. I As stated, the other braking surface is the yarn and as a new surface is constantly being presented to the-brake (owing to the unwinding of the yarn) there is no change in'the characteristics of this surface due to wear,

applied of the tubes.

adjusting devices before referred to are proand other changes due to such causes as temperature and humidity afl'ect all ofv the cheeses alike. Onaccount of these circumstances and conditions, the coasting of the I cheeses even when stopping from a very high speed is nearly uniform. 3

between the largest amount of coast and the smallest amount of coast, I provide an individual {thread slack-take-up consisting of detectors the individual" threads, and an individual tube for each? detector, each ,detiactor droppiiig in its tube as much asis required to'take' up the slack in its particuthreadfrom the cheese which coasts the least lar' thread. In a warper embodying my 1n-' yentmn anddeslgned to operate at a speed,

distance it falls,

side elevation of the warper -1S a Fig.

right-hand tion on dotted line a in Fig. 12. Fig. 13 is a dotted line 1515 1 various devices for operating will have some slack in it to be taken up by its detector, and so that the thread from the cheese whichooasts the most will not reach the bottom of its tube, the aim beingto; have the beam stop. so that the average position of the detectors after they have fallen in taking up slack is about the middle The automatic beam-brakevided so as to maintain this adjustment by correcting continuously for wear or other causes which produce changes in the frictional characteristics of the surfaces of the beam-controlling brake The automatic beam-brake-adjusting mechanisms also includermeans for tightening this brake as the beam fills, so as to make a full beam coast a little less than an empty one, to allow for the fact that full cheese-s coast a little more than empty ones. If this correction. were not introduced, a full beam would coast more than an empty one.

In the accompanying drawings, Figure 1 is a fragmentalfront elevation of a warper embodying the features of my invention. 1 is a detail View of a portion of the clutch mechanism. Fig. 2 is a fragmental top plan view of the warper. Fig. 3"is a taken from the left-hand side of Fig. 1, the driving mechanism being omitted. Fig. 4 is an elevation of the opposite side of the warper. Fig. 5 top plan view of the driving mechanism.

6 is a front elevation of thedriving mechanism, a portion being shown in sec- 1' tion. In Figs. 5 and 6 the mechanism is shown in position for high speed. Fig. 7 Y is a fragmental vertical sectional view of the driving mechanism in position for low speed. Fig. 8 is a sectional view through the clutch, aken in the plane of dotted line 8- -8 of Fig. 9. Fig. 9 is a fragmental ver- .26 of Fig. 9. Fig. 12 is an elevation of the driving mechanism as viewed from the side of Fig. 5. Fig. 12 is a secview inhe vertical plane of line 13-13 of Fig-'5, but showing the parts: in a different position. Fig. 14 is a vertical sectional view takenon line 14- -14 of Fig. 13. Fig. 15 is avertical sectional view of the detector and sl'ack-take-up mechanism on the plane of I v of Fig. 2. Fig. 16 is a.

section on line 16-16 of Fig. 3. Fig.1? is a view. of a means for adjusting the brake for the -war ,dOttGd line 17 17 of Fig. 18. .Fig. "18 is a beam, the view being taken on said brake and fragmental top plan view of the brake.

The parts shown in Fig. 18 appear in side elevation in Fig. 4. Figs. 19 to 26 illustrate 130 means for preventing the yarn mass on the warp beam from becoming eccentric. Figs. 27 to 34 further illustrate the braking mechanism for the warp beam. .Fig. 27 is an enlarged side elevation of the brake for the beam. Figs. 28, 28* and 28 are top plan views showing difierent positions of a mechanism for adjusting the brake. Fig. 29 is a section on line 29 of Fig. 27. Fig. 30 is a section on line 30 30 of Fig. 31. Fig. 31 is a detail ofa means for adjusting the brake-ad jpsting mechanism. 113% 32 is a section on 'ne 32 32 of Fig. 27.- ig. 33 illustrates a portion of the brake-adjusting mechanism. Fig. 34 is a section on line 34 34 of Fig. 33. Fig. 35 is a fragmental top plan view of the mechanism for throwing out the clutch-- through which the warp beam is rotated. A

portion of the structure shown in Fig. 35

is also shown in Fig. 5. Figs. 36 to 39 are views of the detectors and the tubes in which they are located. Figs. '40 and 41 illustrate a receptacle for the .fallen de tectors. Fig. 42 is a fragmental side view of the creel. Fig. 43 is a fragmental view of one of the cheese supports and the corresponding brake. Figs. 44 and 45 are sec tional details of the creel construction. Fig. 46 is a view of a portion of the creel-brake operating mechanism.

The embodiment herein shown of the invention is arranged to operate upon yarn masses of the form termed cheeses, but it will be understood that the invention is not limited to use with such yarn masses.

A cheese (1, Fig. 42) comprises yarn wound spirally upon a tubular core 2. The cheeses are rotatably mounted in a creel positioned in front of the 'warper. For a detail description of a suitable form of creel, reference may be had to my copending application Ser. No. 776,237, filed June 28,

1913. The portion herein shown of the creel comprises a rigid frame in which are ar-' ranged a plurality of trees upon which the cheeses are supported for rotation.

The cheeses are supported upon bushings or spindles 3 of wood or other suitable Inaterial. The spindles are each rotatably mounted upon a'pivot pin 4 fixed to a guide sleeve 5 slidablfmounted on'the tree bar 6. All of the sleeves 5 on said bar are support ed by a bar '1' havin vertically elongated openmgs 8 toreceive Figs 9 (Fi 45) on the sleeves. The bar 'Zis connecte to. one arm a of .a bell-"crank leverlO, The series of hellcrank levers is supported in the creel framework. The other arms of said bell-crank levers are arranged to be 'moved by a rod 11 which-isconnected to a"bell-crank 12.. The bell-crank 12 is arranged to be-Inovedby the'fwarper, for a purpose which will; presently appear. 1

The cheese brakes comprise polished metal plates-13 fixed to the trees mfposition to .a bell crank 16.

underlie the respective cheeses. When the cheeses are to be stopped, the bell crank 12 is released, whereupon the bars 7 and the cheeses drop, the cheeses coming, into peripheral contact with the plates 13.

As hereinbefore indicated, the cheese-supporting sleeves 5 are loosely connected to the bars 7 by means of the lugs 9 extending through slots 8 in the bars 7. When the cheese brakes are to be applied, the bars 7 lower the cheeses as they are unwound, in

order to maintain them at a uniform distance. from the braking plates 13, and thus render substantially constant the time required to bring the cheeses into contact with said plates, f and minimizing the shock caused by the dropping of the cheeses.- A series of vertical thread-guiding bars 14 is stationarily supported at the outer side of the creel, said bars being notched, as shown, to retain the strands in definite position.

The means for applying the creel brakes when a thread breaks comprises a' rod 15 (Figs. 4, 18 and 42)., When the creel comprises two sections, as shown in my said copending application, a rod 15 is provided for each section, each rod being connected to The bell cranks 16 are pivotally mounted upon an arm 17 fixed to ashaft 18 (Fig. 4). This arm is automati cally adjusted in position for a purpose to appear hereinafter. connected by rods 19 to two arms 20 (Fig.

'18) rigidly mounted on a rock shaft 21.

Fixed to the shaft 21 is an arm 22 which is connected by a link 23 (Fig. 46) to an arm or bracket 24 loosely mounted on a. continuously rotated shaft 25. Journaled in said bracket is a pivot pin 26 to which is fixed an arm 27 carrying a stud 28. On a rock shaft 29 is fixed an arm-3O which. is provided with'alateral-projection 31 (Fig. 5) against which the stud 28 isarranged to bear. ,When the stud 28 bears against the projection 31 '(as indicated in dotted lines in Fig-46 and in full lines in Fig. 5), the

bracket 24 is supported against'theoinfiuence of gravity, thereby holding the cheeses off the brake plates 13. When a thread breaks, the arm 30 is swung downwardly to carry the projection 31 out from under the stud 28,

whereupon gravity causes the bracket 24 to swin down into the position represented in lines-in Fig. 46, the cheeses drop- The bell cranks 16 are r

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