US2512165A - Dividing of warp stop motion blades from a series of blades - Google Patents

Description

June 20, 1950 H. MEIER 2,512,165 DIVIDING 0F WARP STOP MOTION BLADES Y FROM A SERIES OF BLADES Filed April" 13. 1945 2 Sheets-Sheet 1 H. MEIER DIVIDING OF WARP STOP MOTION BLADES June 20, 1950 FROM A SERIES OF BLADES -2 Sheets-Sheet 2 tu ar mow M39 omm Omn. .25

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INVENTOR jfsilu'ich Jteien ATTORNEYS Patented June 20, 1950 DIVIDING OF WARP STOP MOTION BLADES FROM A SERIES OF BLADES Heinrich Meier, Uster, Switzerland. assignor to Zellweger A. G., Apparate-und Maschinenfabri ken Uster, Uster, Switzerland Application April 13, 1945, Serial No..588,l51 In Switzerland April 21, 1944 7 Claims.

This invention relates to the dividing or separation of a warp stop motion blade from a series of blades.

In order to divide or separate a blade from a series of warp stop motion blades, constructions including relatively small permanent magnets or suction heads are known for separating the foremost blade in a row. Devices of this type how-- ever have the drawback that a single blade is not divided and separated from the series with sufiicient reliability.v For example, it frequently happens that blades which may be greasy or which adhere to one another for any other reason are carried along with the foremost blade when such blade is separated- Also in constructions wherein suction action is utilized onl the blades which present to the suction head a plane and relatively large engagement area may be used so that a relatively expensive construction is required for tie-- veloping the requisite vacuum. It is an object of the invention to provide a construction avoiding the above disadvantages.

Furthermore in using dividing devices having permanent magnets of slight strength there is the risk that the blades upon being separated will leave such magnets and when stronger magnets are used the blades being separated may carry along with them one or more of the immediately following blades in the series. This latter contingency is particularly true if the blades are very thin. Furthermore it may also happen that the blades which follow the blade to be separated or divided off may first be removed and then drop off or trail behind so that the distance between the separated blade and the following blade is reduced to such an extent that the drawing-in of a warp thread is rendered most difiicult. It is a further object to avoid the above disadvantages.

A further object of the invention is to provide a construction wherein the dividing or separating member cooperates with a knife in such a way that the knife edge engages with the blades in the series immediately behind the blade separated. 7

A still further object is to provide a construction wherein a magnet 01' sufficient strength may be used to ensure the separation of one blade from. the series without fall. If therefore two or more blades are liable to be removed because of the excessive attractive force of the magnet the superfluous blades are prevented from being carried along with the dividing'or separating member by the knife. The invention therefore is particularly well suited for removing blades from a single series of blades as well as from any desired number of series.

A still further object of the invention is to provide means whereby the distance betweenthedividing member and the. knife may bevaried so as to be adjusted in accordance with the thickness of a blade. i

A still further object of the invention is to provide a construction which is not only suitable for dividing devices employing magnets but, also for any other blade removing means such as, for example, suction heads. y

With the above and other objects inview which will become apparent from the detailed description below, the invention is illustrated in the drawings by way of example only, in which:

Fig. l is a front view of the dividing or separat-- ing device with parts in cross-section;

Fig. 2 is a side elevational view of the construetion shown in Fig. 1; r

Fig. 3 is a top plan view of the construction shown in Fig. l; a

Fig. 4 is a side view of a detail of a control de- .uce;

Fig. 5 is a side elevational view showing a bladev held in the drawing in position by a magnet;

Fig. 6 is asimilar view showing the magnet'in a terminal position; and

Fig. 7 is a diagram showing operation during a complete cycle. In the present instance four parallel carrier bars I are shown supported by the frame of the machine in fixed position and fiat warp stop motion blades 2 are mounted on the bars by the slots: provided therein. The dividing or separation of the foremost blade of each series of blades is elfected by a permanent magnet 3 associated with each row of blades. Each magnet is secured to a supporting body 4 with the magnet poles thereof located at the left and right hand side respectively of the associated carrier bar I. In the position where the blade is gripped the poles of each magnet extend, as shown in Fig. 2, below the upper edge of the carrier bar I.

All of the supporting bodies 4 are connected with one another by a stirrup 6 to which each body is individually secured and the stirrup 6 is rotatably mounted upon a shaft 5 which is supported in a mounting shield M. With each carrier bar I and therefore with each series of blades there is provided a two-armed lever 1 which is secured by a bolt 8 to a mounting 9 which is rotatably mounted on the shaft 5 so that the lover: I may oscillate in two planes at right angles to one another. The arm of each lever 1 extending towards the blades 2 is provided with a knife In which terminates, as shown in Fig. l, in an edge 10 which may be projected laterally to cooperate with the respective carrier bar I. A tension spring H engages with the other" arm of each lever l and the tensile force of the spring H comprises a longitudinal component and a component transversely of the carrier bar I.

A cylindrical bolt 1 is provided on the upper end of the lever 1 for engaging the circumference of a pusher or plunger I2 having a conical surface portion l2 and a disc I2". The four plungers I2 are axially displaceably mounted in a common U-shaped carrier i3 and are each urged by a spring [4 against a control drum l5 for common control by means of the four earns 15 on the control drum I 5 which are spaced from one another by 90. The control drum I5 is driven as shown in Fig.4 by a ratchetwheel l6 operated by a pawl 11 which is mounted on a rocker l8 which in turn is rotatably mounted on ashaft i9. g

"'A crank through a connecting rod 2| transmits a reciprocating movement to the'rocker i8 which is pivoted to the rod 2|. A connecting rod 22 is also pivotally connected to the crank and the rod 22 is pivotally connected by a bolt 23 to a link 25 which in turn is connected with the supporting body 4 which is adjacent the mounting shield 24. A control plate 28, urged by'a tension spring 21, is mounted upon an axle 25 rotatably mounted on the mounting shield 24. A pin 29 secured to the link 25 engages in a cam groove 28' provided in the control plate 28.

On the rotatable axle 26 four ejecting levers 32 are fixed each of which is associated with a magnet 3 and consequently also with the respective carrier bar I and is arranged for swinging movement between the two magnet poles concerned.

The operation of the dividing device is as follows:

The crank 20 is rotated by means of a driving motor (not shown). which can be cut in andcut out by means of a floor contact or may be connected with a power-take-oif, as shown in the patent to Moore, No. 1,259,546. The rotation in clockwise direction starts from the position shown in Fig. 5. The function of the apparatus is, however, easier to explain, if one starts with the position shown in Fig. 2,' at which time the crank 20 is in rotation.

By the action of the intermittently fed rotatable crank 20 the four supporting bodies 4 together with the associated magnets 3 through the connecting rod 22 and the link 25 have a swinging movement imparted thereto. By this means the bodies are moved during a complete revolution of the crank through 360 from the bladegripping position as shown in Fig. 2 into the drawing-in position shown in Fig. 5; into the terminal position shown in Fig. 6 and then back again into the blade-gripping position shown in Fig. 2. The device is temporarily halted by the operator (Fig. 5) while a thread is threaded through a blade 2. I

If the dividing device is used without drawingin the thread through the blades as for dividing the blades for the purpose of donning the blades on the warp threads the drive for the dividing device may operate continuously without any intermission.

The pawl I! carried by the rocker I8 is swung by the connecting rod 2 I which is reciprocated by the crank 20 so that the ratchet wheel IS on the control drum I5 is rotated each time through 90 for one complete revolution of the crank. In this way one of the four cams i5 on the control drum i5 moves a plunger l2 associated with such cam to shift such plunger axially against the action of its associated spring 14. The associated lever l is then pivoted about its bolt 8 due to the cooperation of the conical surface portion i2 of the plunger [2 and the knife edge 10 of the associated knife H! is moved from the range of travel of the blades so that the knife as shown in Fig. 1 at the left hand side is clear of the series a of the blades 2. The knives, which pertain to the series a1, a2 and as remain, however, in position so that they prevent any removal of the plates in such series by the associated magnets.

During the movement of the plunger I2 and the knife carrier lever 1 the four supporting bodies 4 as well as the magnets 3 associated therewith will have been rotated by the action of the stirrup 5 into the blade gripping position as shown in Fig. 2. The poles of the magnets 3 located at both sides of a carrier bar I then contact the leading blade of the respective series in this case the series a to move it upon subsequent movement of the supporting bodies 4 from the position shown in Fig. 2 to the drawing-in position shown in Fig. 5. The knives associated with the other series prevent, as

- stated above, the foremost plates from being dragged along by the magnet.

During this movement of the supporting body 4 the cylindrical bolt 1' of the lever 7 slides along a generatrix of the conical surface portion 12' of 1 the associated plunger 12 under the influence of itself in the space between the foremost and the following blade thereby restraining th remaining blades 2 of series a and preventing such blades from being carried along by th magnets 3. When the cylindrical bolt I of the lever I strikes the end face of the disc l2" facing the conical surface portion i2 of the plunger l2 the move ment of the knif carrier lever l is stopped while the supporting bodies 4 continue in their movement to the drawing-in position of Fig. 5.

In this way any blades 2 that may adhere to the blade 2 which is being divided off are reliably retained and a sufiicient spacing between such blade being divided off and the series of blad s is secured so as to provide a more convenient drawing-in of a thread through the blade 2 divided off. The blade 2 which has thus been divided off maintains an oblique position which can be secured by correspondingly obliquely arranged bearing surfaces on the poles of the magnets 3.

The four ejecting levers 30 which are disposed on the axle 26, so that they rotate uniformly,-

follow the movement of the supporting bodies '4' and of the magnets 3, so that that ejector which belongs to that pair of magnets which has separated a blade contacts this blade and forces it, as shown in Fig. 5, against the inclined surfaces of the two magn ts. In this manner an eventual falling-off of the blades which are separated and hang on the magnets 3 is prevented. The movement of the ejecting levers 3B is effected by means of the cam grOOVe 28' in the control plate 28. This control plate 28 is fastened on the axle 26, and is driven by the pin 29 on the link 25, which is secured to the outermost supporting body 4. Th cam groove is so developed that the ejecting levers follow the supporting bodies and reach the 8 pole surfaces in the position shown in F181- described above. Under the influence of the. spring 21, the ejecting levers 30: have. thetendau ios ency to pass between the two magnets pertaining to one carrier bar and swing further toward the left (Figs. 5 and 61. I

When the. thread is drawn-in, the operator sets the crank again in motion, whereby the magnets: continue towards the left, until they arrive in the.- flnal position shown in. Fig. 6, while the. ejecting levers 3!! follow them. The ejector lever,lwhich has engaged a blade, shoves; the same during-its:

progress into the position shown in Fig. edownwardly on the poles of the magnets. At the last moment the. ejector strikes the blade under the influence of the. spring 21 so that it is moved a.

little further along the bar 1. When the crank is rotated further, the connecting rod 2.2: moves the magnets back again into. the position. shown iii-Fig.2.

While the supporting bodies 4 move from the position shown in Fig. 6 to the position shown. in

Fig. 2 the ejecting levers 30- alsopivot back into; their initial position as shown in Fig.v 2. Inthe:

course of the next followingrevolution of; the crank 20 the ratchet wheel t6. of the controldrum- .[5 is rotated 90 by the. pawl I! and another cam [5 will strike. the plunger (2 associated therewith whereupon the cycle of operations begins anew The cooperative movement of the various-ele-- ments is diagrammaticall illustrated inthe. diagram of Fig. 7 which gives a complet cycle of 360'-ofthe crank 20.. The various elements are indicated along the ordinate while the time of movement with relation to the movement of the crank is shown on the abscissa. The stationary period for the crank 20 during which the-drawing-in operation takes place is indicated by dotted lines.

The start of the movements at 0 degrees corresponds with the position shown in Figs. 1, 2, and 3; The crank rotates from this position in clockwise direction through an angle of more than 90 degrees during which the magnets move away from the series of blades, and the magnets "of the series a take along a blade, while the other three series are retained by the knives. As can b seen from the diagram for the knif pertaining to series a, it is swung in back of the blade when the magnets have first moved a slight portion of their way. The insertion of the knife starts at approximately 20 degrees and is finished at about 50 degrees. The movement of the ejectors follows the movement of th magnets so that the ejector pertaining to the series a starts at about 95 degrees to press on the blade lying on the inclined surfaces of the magnet.

The apparatus reaches the drawing-in position at about 105 degrees and is maintained in this position as long as th operator desires. When the rotation of the crank is resumed, the crank now travels without stopping through the positions from 105 degrees to 360 degrees, and again from 0 degrees to 105 degrees.

During this period the magnets move towards th left as seen in Fig. 2 until the crank has passedrsmdegrees. Duringthistimethe electors moveal'ong also and shove th blade downwardly along-theinclined surfaces of the magnets. Upon.-

conti'nued rotation of the crank, the magnets re turn towards the right and atv 360 degrees they are back again. at theposition shown in Fig. 2.

- The control drum- I5 is stationary at 0 degrees, at the start of the rotation of the crank, since the connecting rod 2| moves downwardl between" 0 degrees and about 125 degrees. After 125 degreesv are passed, the rod 2| moves upwardly and actuates the pawl H causing the ratchet wheel l-Bi to: rotate degrees. The movement of the" pawl is finished at about 305 degrees. The control drum t5- and also thecams [5 therefore are stationary from 305-. degrees to 360 degrees. and from 0 degrees. to, 125. degrees of the rotation of thecrank; The same holds for the plungers 2, the: movement ofwhich is caused by the cams [5".

It is thought that the invention and. its advantages will be understood from the foregoing description. and it. is apparent that various changes may be made in the form, construction and arrangement of the partswithout departing from. the: spirit and scope of the invention or sacrificing: its. material advantages, the form hereinbefore described and illustrated in the drawings being merely av preferred embodiment thereof.

I claim:

i. In a: devicezfor' dividing. warp stop motion blades from a series of blades, the combination with a row of warp stop motion blades consti-f tilting the seriesv of blades, 2. support extending in the direction of said blade row for sustaining.

said rowfor the individual blades to be removable in said direction, dividing meansv for exerting attractive removing power on the foremost blade with the thicknessof said blades, said knife edge" cooperating with said dividing means by inter'-' engagement with said series of blades at said distance behind said foremost blade in said, series.

2; In av device for dividing warp stop motion blades from various series of blades in the course of successive working cycles, the combination with each individual row of blades constituting said various series, a support extendin in the direction of said blade row for sustaining said row for the individual blades to be removable in said direction, dividing means for exerting attractive removing power on the foremost blade in said row, of a knife for each said row having a knife edge, displaceable plungers for controlling said knives, a roll for controlling said plungers, for said knife edge to cooperate with the respective said dividing means by interengagement of said knife edge with the associated series of blades directly behind said foremost blade in each series of blades from which said foremost blade is to be divided off, and means for shifting said knife edge in each row from which said foremost blade is not to be divided off between said dividin means and said foremost blade.

3. In a device for dividin Warp stop motion blades from a series of blades, the combination with a row of warp stop motion blades constituting the series of blades, of a support extending in the direction of said blade row for sustaining said row for the individual blades to be removed in said direction, dividing means for exerting attractive removing power on the foremost blade in saidrow, a knife having aknife edgecooperating; with said dividing means and a camoperated plungercooperating with said knife for; engagin said knife edge with said series directly behind said foremost blade in said series to be divided off shortly after said foremost blade has been removed by said dividin means from said series.

4. In a device for dividing Warp stop motion blades from a series of blades, the combination with a row of warp stop motion blades constituting a series of blades, of a support extending in the direction of said blade row for sustaining said row for the individual blades to be removable in said direction, permanent magnetic means for attracting the foremost blade in said row, a knife having a knifeedge for cooperation with said magnetic means and means cooperating with said knife for engaging said knife edge with said series directly behind said foremost blade in said series to be divided off immediately after a slight movement of said foremost blade from said series by said magnetic means.

5. In a device for dividin warp stop motion blades from a series of blades, the combination with a row of warp stop motion blades consti-' tuting the series of blades, of a support extending in the direction of said blade row for sustaining said row for the individual blades to be removable in said direction, dividing means for exerting attractive removing power on the foremost blade in said row, means for moving said dividing means together with said attracted foremost blade away from said row, a knife having a knife edge cooperating with said dividing means by interengagement of said knife edge with said series directly behind said foremost blade in said series blade row, and means for setting said knife at rest with said knife edge insaid position of interengagement, while said dividing means moves said foremost blade away from said row by actuation of said moving means.

6. In a device for dividing a warp stop motion blade from a row of blades in a series of rows of blades the combination comprising supports extending in the direction of each blade row for sustaining said row for the individual blades to be removable in said direction, dividing means 8; fcrs'each" rowfor exerting attractive removing poweron the foremost blade in each row, means for moving said dividing means together with said attracted-foremost blade away from said row, a knifehaving a knife edge for each row for cooperatin with said dividing means, means for operating the knife in the row from which a blade'iis to be divided to retain the blades behind the foremost blade after a slight movement of saidwforemost'blade by said dividing means and means for operating the knives in-the other rows to retain all the blades therein and prevent action of saidv dividing means on the blades in said last named rows;

-7. In a device for dividing warp stopvmotlon blades from a series of blades, the combination with a row of warp stop motion blades constituting the series of blades, of a support extending in the direction of said blade row for sustaining said row for the individual blades to be removed in said direction; dividing means for exerting attractive removing power on the foremost blade in said row, a knife having a knife edge cooperating withsaid dividing means and a cam operated mechanism cooperatin with said knife'for removing-said knife from in front of the foremost blade insaid seriesand inserting said knife directly-behind said foremost blade in said series shortly after said foremost blade has been slightly removed by said'dividing means from said series.

HEINRICHMEIER.

, REFERENCES CITED The following references are of record in the file of this patent:'- I

. nmtrnp sTA'rEs PATENTS ,Germ-any Mar. 16, 1933

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