US2943363A - Drawing mechanisms for spinning machines - Google Patents

Drawing mechanisms for spinning machines Download PDF

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Publication number
US2943363A
US2943363A US499160A US49916055A US2943363A US 2943363 A US2943363 A US 2943363A US 499160 A US499160 A US 499160A US 49916055 A US49916055 A US 49916055A US 2943363 A US2943363 A US 2943363A
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catch
arm
members
pin
wall
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US499160A
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Erwin Dausch
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/56—Supports for drafting elements
    • D01H5/565—Top roller arms

Definitions

  • the present invention relates to drawing mechanisms for spinning machines.
  • the present invention relates to structure which releasably maintains the top rolls carrying arm of a drawing mechanism in its operative position.
  • Drawing mechanisms for spinning machines are provided with catch mechanisms for releasably holding the top rolls carrying arms in their operating position, but the conventional catch mechanisms are not easily accessible and, furthermore, require the operator to use both of his hands in order to release the top rol-ls carrying arm so that it may be raised to its inoperative position. Furthermore, with the conventional catch mechanisms there is excessive wear of the catch members so that in a relatively short time they are incapable of securely maintaining the top rolls carrying arm in its operative position, and as a result readjustment of the parts is necessary, such readjustment being difiicult to carry out and requiring a considerable amount of time.
  • One of the objects of the present invention is to overcome the above drawbacks by providing a drawing mechanism with a releasable catch structure to hold the top rolls carrying arm in its operative position, this catch structure being capable of being released with one hand of the operator.
  • Another object of the present invention is to provide an arrangement which requires the operator to exert a pressure which is a small fraction of that which maintains the catch structure in its operative position, when the operator Wishes to release the catch in order to move the top rolls carrying arm to its inoperative position.
  • a further object of the present invention is to provide a catch structure which will not wear excessively so that it may be used for a long period of time without any readjustments.
  • An additional object of the present invention is to provide a catch and release structure of the above type wherein one spring is capable of returning the catch to its operative position, and of returning the catch operating structure to its rest position.
  • Still another object of the present invention is to provide a releasable catch structure of the above type which may be used with a drawing mechanism which is conventional except for the catch structure so that conventional drawing mechanisms need be modified to a very small extent, if at all, in order to accommodate the releasable catch structure of the invention.
  • the present invention mainly consists of a drawing mechanism of a spinning machine, and this drawing mechanism includes an elongated member adapted to carry the top rolls of the drawing mechanism.
  • a support member is connected to the elongated member to support the same for movement to atent and from an operating position.
  • a first catch part is car ried by the elongated member, and a second catch part is carried by the support member and engages and cooperates with the first catch part when the elongated member is in its operating position to maintain this elongated mem-.
  • a manually operative release means is carried by the elongated member or the support member, and is operatively connected to either one of the first and second catch parts to move this one of the catch parts out of engagement with the other of the tic for the invention are set forth in particular in the ap-,
  • Fig. 1 is a fragmentary, partly sectional, side elevational view showing a drawing mechanism having one embodiment of a catch means of the invention connected thereto;
  • Fig. 2 is a fragmentary side elevational, partly sectional, view on an enlarged scale of the top rolls carrying arm of Fig. 1 and part of the support structure therefor, Fig. 2 showing the details of the catch structure of Fig. 1;
  • Fig. 3 is a partly broken away sectional view taken along the lines 3-3 of Fig. 2 in the direction of the arrows;
  • Fig. 4 is a fragmentary sectional view taken along line 4-4 of Fig. 2 in the direction of the arrows;
  • Fig. 5 is a fragmentary, partly sectional side elevationa view of a top rolls carrying arm and part of a support therefor, Fig. 5 showing another embodiment of a catch structure of the invention
  • Fig. 6 is a fragmentary sectional view taken along the line 6-6 of Fig. 5 in the direction of the arrows;
  • Fig. 7 is a fragmentary side elevational view of a top rolls carrying arm provided with a third embodiment of a catch structure of the invention.
  • Fig. 8 is a fragmentary, partly sectional, side elevational view of a fourth embodiment of a catch structure incorporating features of the present invention.
  • Fig. 9 is a sectional fragmentary view taken along the line 9-9 of Fig. 8 in the direction of the arrows;
  • Fig. 10 is a partly sectional fragmentary side elevational view of still another embodiment of a catch structure of the invention, this catch structure being located at the forward end of the drawing plane;
  • Fig. 11 is a fragmentary end view of the structure of Fig. 10 as seen from the left hand thereof, as viewed in Fig. 10;
  • Fig. 12 is a fragmentary sectional view taken along the line 12-12 of Fig. 10 in the direction of the arrows;
  • Fig. 13 is a fragmentary sectional view of still another embodiment of a catch structure of the invention, the section of Fig. 13 being taken along the line 13-13 of Fig. 14 in the direction of the arrows;
  • Fig. 14 is a sectional side View of the structure of Fig. 13, the section of Fig. 14 being taken along the line 14-14 of Fig. 13 in the direction of the arrows.
  • Fig. 1 shows a conventional supporting frame A which supports a drawing mechanism.
  • This supporting frame A has a rod 10 fixed thereto, and an additional support B is clamped to the rod 10 by any suitable means such as the screw 10a.
  • the support B is formed of fairly rigid sheet metal and is substantially U-shaped, this support B having a pair Patented July 5, 1960.
  • the support 13 is provided at its lower front an rear po o s th. r ns er e w ll hr u h i h Screw p s hi c e 04 be n n fo m of a bolt and nut.
  • each of the side walls of the support B is provided adjacent its top end with a forwardly extending projection 21 which forms a stationary catch member of the invention.
  • a top rolls carrying arm, C is. turnably carried by the pin 11 for movement between the operating position illustrated in Fig. l and an inoperative position where the arm C is raised upwardly from the position shown in Fig. 1
  • the top rolls carrying arm C carries. the top rolls,12 in a purely conventional manner such as by means of the arms 15 which are pivotally connected to the top rolls carrying arm C and which are in turn fixed to the saddle members 13 respectively, which respectively bear against the top surfaces of the intermediate shaft portions of the top rolls.
  • Leaf spring members 14 are respectively fixed to the saddle members 13 and engage these intermediate shaft portions in the manner indicated in dotted lines in Fig. 1, in order to releasably retain the top rolls on the arms 15 when the top rolls carrying arm C is raised to an imperative position.
  • a weighting means of purely conventional construction may be provided for urging the top rolls 12 downwardly toward the drawing plane with a predetermined force, such a weighting means not being shown in the drawings since this feature is well known to those skilled in the art and has nothing to do with the, present invention.
  • the top rolls 12 respectively cooperate with bottom rolls 16 which are turnably supported by members 17, respectively, the latter being carried by the frame A in the manner illustrated diagrammatically in Fig. 1.
  • the top rolls carrying arm C is composed of a pair of side. walls 18 interconnected at their left end, as
  • each of the side walls 18 is formed next; to its bottom edge with a cut-out through which a hookportion of each of; the sidewalls of catch member 19 freely extends into engagement with the projection 21 of each side Wall of the.
  • the top wall 32 is formed just to the left of rib 22, as viewed in Fig.
  • the side walls 18 are formed with a pair of aligned arcuate slots 26 through which a pin 25 extends, this pin 25 extending across the space between the side walls 18, through theslots 26 therein and being fixed to the side walls of the catch 19.
  • the curvature of the slots 26 are of a configuration, so that as catch member 19 turns the pin 25 moves along the slots 26;
  • a manually operative means is provided for moving the catch member 19 out of; engagement with projections 21 of support B so as to release the arm C for; upward movement to an inoperatiye position and in the embodiment of Figs. 1-4 thismanually operable release means takes the form of an elongated resilient strip of metal 28 formed at its right free end, as viewed in Fig. 2, with the elongated slot throu which the pin 25 freely passes.
  • the strip 28 is pivotally connected at its left end, as viewed in Fig. 2, to a pin 29 which extends between and is carried by a pair of lugs fixed to and extending. downwardly from the top wall 32 between. the side walls 18.
  • this strip 28 is shaped to form an upwardly extending projection 31, and this projection 31 extends freely through an opening 33 formed at the top wall 32. It will be noted from Fig. 2 and Fig. 3 that the clearance between projection 31 and wall 32 is fairly small, and that the wall 32 (and the side walls 18, as is evident from Fig. 3) serve to guide the projection 31 for movement up and down in a direction substantially normal to the drawing plane.
  • Figs. l-3 The above described structure is shown in Figs. l-3 in its operating position. If the operator wishes to rclease the arm C for upward movement to an inoperative position, he need only depress theprojection 31, and this projection 31 may be. easily depressed with. one hand. When the projection 31, which forms a pressure element accessible to the operator, is depressed, the strip 28 bends and pulls the pin 25 to theleft as viewed in Fig. 2, so as to move the catch member 19 out of' engagement with the catch members 21. Then the arm C may be turned up to its inoperative position. As soon as the operator releases the pressure element 31 the strip 28 snaps back to its unstressed position, shown in Fig. 2.
  • the spring 24 urges the catch member 19 back to a position where it may again cooperate with the stationary catch members 21. It will be noted that the. spring 24 acts independently of member 28 to locate the movable catch member 19 in its operative position.
  • the hook portions of the side walls of' the catch member 19 simply ride over the stationary catch members 21 and the pin 25 moves along the slots 26 as well as along the cut-out 27, the arm 28 being unstressed.
  • the spring 24 snaps the hook portions of the side wall of catch member 19 beneaththe stationary catch members 21 and the parts are again. in their operative position.
  • the support B differs from the support B only in that the stationary catch members 21a, which are integral with the support B, are located laterally inwardly from the remainder of the side walls of the support B by a simple bend in the catch members 210, as indicated in Fig. 5.
  • the pin 11 carried by the support B turnably carries the top rolls carrying arm D adjacent the right end of the latter, as indicated in Fig. 5.
  • This top rolls carrying arm D is composed of a continuous side wall 34 having a pair of side wall portions and an end wall portion located at the left end of arm D, as Viewed in Fig.
  • top wall portion 35 interconnecting the side and end wall portions of the side wall 34, so that the arm D also forms a structure similar to a container having an open bottom.
  • the top wall 35 is formed adjacent the rear end of the arm B with an upwardly bulging portion 36 having a downwardly directed concave face.
  • a pin 37 extends across and is carried by the side wall portions of the side wall 34 and is located within the upwardly bulging portion 36 of the top wall 35. This pin 37 turnably supports a pair of movable catch members 38 which are respectively provided with bottom catch portion 39 which respectively cooperate with the stationary catch members 21a of the support B, as is shown particularly in Fig. 6.
  • Springs 41 respectively press against the catch members 38 to urge the latter in a counterclockwise direction about the pin 37, as viewed in Fig. 5, into cooperative engagement with the stationary catch members 21a, and these springs 40 abut at their left ends, as viewed in Fig. 5, against a pair of members 41, respectively, which are fixed to the arm D in any suitable way, diagrammatically indicated in Fig. 5.
  • a bar carrying the members 41 may extend across and be fixed to the side wall portions of the side wall 34.
  • a pin 42 extends between and is connected to the pair of movable catch members 38 and a motion transmitting member 43 formed at its right end, as viewed in Fig.
  • the top wall 35 of the arm D is formed adjacent its left end, as viewed in Fig. 5, with an opening passing therethrough and part of the material of the top wall 35 extends downwardly to form a guide tube 47 which defines this opening in the top wall 35.
  • a pressure element 48 which is accessible to the operator extends slidably through the guide tube 47, and this pressure element 48 is itself tubular, is provided with a top wall, and is provided with a bottom outwardly extending annular flange 49 which engages the bottom end of the tube 47 to limit upward movement of the pressure element '48.
  • a spring 50 extends into the pressure element 48 and bears against the top wall thereof, this spring 50 also bearing against a free end 51 of the bell crank 46.
  • the spring 50 is stronger than the springs 40 so that when the pressure element '48 is depressed by the operator the bell crank 46 will turn in a counterclockwise direction about the pin 45, as viewed in Fig. 5, to shift the motion transmitting links 43 to the left, as viewed in Fig. 5, so as to move catch members 38 out of engagement with catch members 21a while compressing the springs 40.
  • the arm D may then be moved up to its inoperative position, and the spring 40 returns the catch members 38 to their operative position.
  • these springs 40 return the release means 43-51 to its rest position indicated in Fig. 5, the spring 50 being substantially unstressed in this rest position of the release means.
  • the catch members 38 simply ride over the upper curved faces of the catch members 21a and snap between the latter when the arm D has reached the position indicated in Fig. 5.
  • Fig. 7 The embodiment of the invention which is illustrated in Fig. 7 is similar to that of Fig. 5 in that it includes a pair of catch members 38, pin 42, spring 40 and elements 41 identical with those of Fig. 5.
  • the top wall 35 of the top rolls carrying arm B is formed with a simple opening through which a pressure element 59 extends freely.
  • the top wall 35' interconnects the side and end wall portions of side wall 34' of the arm B which is identical with the side wall 34.
  • the pressure element 59 is formed with a lower portion 60 of reduced cross section which extends slidably through an opening of guide 61 in the form of a bar extending between and fixed to the side wall portions of the side wall 34.
  • the guide bar 61 cooperates with the portion 60 of pressure element 59 to guide the latter for movement up and down in a direction substantially normal to the drawing plane.
  • This pressure element 59 extends through an opening 62 of a strip 63 which is curved at its right end, as viewed in Fig. 7, to surround the pin 42, so that in this way the strip 63 is connected to the catch members 38.
  • the strip 63 which may be made of metal, extends at its left end portion 64, as viewed in Fig. 7, slidably through an opening formed in a downwardly extending projection 65 of the top wall 35, so that this projection 65 serves to guide the strip 63 for shifting movement forwardly and rearwardly.
  • the pressure element 59 is provided with an inclined face 59' which engages the left edge of opening 62, as viewed in Fig. 7, and therefore when this pressure element 59 is depressed by the operator downwardly from the position indicated in Fig. 7, (the strip 63 will be shifted to the left, as viewed in Fig. 7, in order to turn the catch members 38 in a clockwise direction about the pivot pin; 37 so as to release the arm B for upward movement to an inoperative position.
  • the pressure element 59 is designed to permit this element 59 to be shifted upwardly to its rest position shown in Fig. 7 when the strip 63 is urged to the right, as viewed in Fig. 7, by the actions of springs 40 on the catch members 38 respectively. It is apparent that with the embodiment of Fig. 7 the operator need only depress element 59 to release the arm B, and the latter may simply be turned downwardly to its operative position, the catch members 38 automatically moving into cooperative engagement with the catch members 21a as indicated in Fig. 5.
  • the embodiment of the invention which is illustrated in Figs; 8 and 9 includes a top rolls carrying arm D identical with that of Fig. 5, as well as a support B and stationary catch members 21a identical with those of Fig. 5. Furthermore, elements 40 and 41, as well as elements 47-50, of Fig. 8 are identical with the same elements of Fig. 5, so that the same reference characters indicate these identically constructed parts of Figs. 5 and 8.
  • the springs '40 of Fig. 8 bear against a pair of catch members 52 which are pivotally carried by the pin 37 in the same way as the catch members 38.
  • the pair of catch members 52 are provided with lower catch portions 53 respectively, which cooperate with the stationarycatch members 21a, respectively, in the manner indicated in Fig. 8.
  • the catch members 52 are each provided with a forwardly extending projection 54 and these projections 54 are fixedly connected to each other by a bar 54 extending between and fixed to the projections 54.
  • lever 56 engages the under surface of the bar 54.
  • This. lever 56 is carried intermediate its ends by a pin 57 which extends between and is fixed to the side wall portions of the side wall 34.
  • the lever 56 is provided with a curved intermediate part which rests on the pin 57.
  • the left free end 58 of the lever 56 this way the bar 54' is moved upwardly so; as to turn the catch members 52 against the-influence ofthesprings. 40 in a clockwise direction, about the pin, 37 out of en,- gagement with the stationary catch members 214.
  • the clearance between wall 35 and lever 56 is sufficient to permit this lever to the catch members 52 out of engagement with the catch members, 21a.
  • lever 56 will engage the top wall 35 before the end 55 of lever 56 can; move out of engagement with the bar 54,.
  • the springs 40 will return the parts. to the position indicated in Fig. 8, and when the arm D of Fig. 8 is lowered back to its operative position the parts 53 of the catch, member. 52 respectively ride over and snap. under the stationary catch members 21a, respectively, to again releasably maintain the armD inits operative position.
  • the catch structure is located at therear end portion of the top rolls carrying arm, while the manually operable pressure element is located adjacent the forward end of this. arm, and the motion of the. pressure element is transmitted by a structure extending along the arm to the catch structure located at the rear end portion. thereof.
  • this structure which transmits the motion of the pressure element to the catch structure may take the form of a leverage which enables theoperator to release the catch with only a fraction of the force acting on the catch itself.
  • the supporting structure not illustrated in the embodiments of Figs. 1 m9 is of conventional pivotal type.
  • the frame. E differs from the frame-A in that it is provided with a forward endportion 66 having upwardly directed notches in which the shaft of the front set of top rolls 67 is turnable.
  • This front set of top rolls 67 cooperates with the front top rolls 12 which are identical with the front top rolls 12 of Fig. 1.
  • the remaining top rolls. 12 cooperate with the remaining bottom rolls 68 of the drawing mechanism, these bottomrolls being turnably supported by blocks 69, respectively, which are carried by the frame E- in the manner indicated diagrammatically in Fig. 10.
  • the frame E carries a guide bar 70 which guides a belt of the drawing mechanism, this belt being curved in a known way about the guide bar 70.
  • a pair-of stationary catch members 71 engage the rear face of the guide bar 70 and extend upwardly therefrom. These catch members 71 are fixed to each other by a plate 71 which extends between and is fixed to the catch members 71' and'which is substatnially parallcl to the rear face of the guide bar 70.
  • IA screw 72 has its head in engagernent with the plate 71' and extends freely through an opening of this plate and an opening of the guide bar 70 into threaded engagement with the frame B so that the screw 72 fixes elements 70 and 71 to each other and to the frame, E.
  • the top rolls carrying arm F of the embodiments of Figs. 10-12 includes a front, end wall 73 and atop wall.
  • a pressure element 75 extends freely through an opening in the top wall 74,
  • this pressure element 75 which is defined by the downwardly directed tubular portion 76 of the top wall 74, this pressure element 75 having at its bottom end an outwardly extending annular flange 77 which engages the bottom end of the tubular portion 76 to limit the upward movement of the pressure element 75.
  • a spring 78 extends into a downwardly directed recess forming the pressure element 75 to urge the latter upwardly, and this spring 78 also extends into a recess of an arm 79 of a, bell crank 80 which is turnable about the pivot pin 81 extending between and fixed to. the side walls of the arm F.
  • the other arm 82 of the bell crank 80 is directed downwardly and engages the right end of a spring 83, as viewed in Fig.
  • this spring 83 extending into a recess of projection 84 extending rearwardly from the inner face of the end wall 73 of the arm F.
  • the spring 83 is weaker than the spring 78v and in the position of the parts indicated in Fig. 10 the spring 78 is. substantially unstressed.
  • a pair of catch members 85 are fixed. to. the arm 82 of lever 80 and formed integrally therewith, and these movable catch members 85 cooperate with the stationary catch members 71, respectively, in the manner indicated in Figs.
  • the operator need only depress the pressure element 75 which is guided for. movement in a direction substantially normal to the drawing plane by thetubular portion 76. Movement of the pressure element 75 turns the bell crank 80 in a clockwise direction about the pin 81 so as to compress the spring 83, and move the movable catch members 85 out of engagement with the stationary catch members 71, respectively.
  • the catch structure carried by the frame F returns to the position indicated in Fig. 10.
  • the catch members 85 simply ride over the catch members, 71 and snap beneath the same, respectively, so that the parts assume the position indicated in Fig. 10.
  • the embodiment of the invention which is shown in Figs. 13 and 14 includes a frame G which turnably supports a plurality of bottom rolls in the same way as the frame E.
  • the forward end portion 86 of the frame G turnably supports the front bottom rolls 87 in the manner indicated in Fig. 14.
  • the bottom rolls to the rear ofgrolls 871 are supported by the fram G in the same way that the frame E supports the bottom rolls 68, andthe bottom rolls of the embodiment of Figs. 13 and 14 are identical with bottom rolls 68 and cooperate in the same way as the top rolls 12.
  • the embodiment of Figs. 13 and 14. differs, however, in the manner in which it supports the front top rolls, the front top rolls 95 of this embodiment being shown in Fig. 14.
  • the guide bar 88 of Figs. 13 and 14 corresponds in its construction and function to the guide bar 70. However, the guide bar 88extends through an opening formed in a stationary catch-member 89 in the manner indicated in Figs. 13 and- 14.
  • a screw 90 extends through the stationary catch member 89 and the guide bar 88 into threaded engagement with the frame G so as to fix guide bar. 88 andstationary. catch member 89 on the frame G.
  • the top end" portion 91 of the catch member 90 has a substantially T-shaped cross section, as is evident from Fig. 13, and is elongated andextends forwardly and rearwardly, as may be seen from Fig. 14.
  • the arm H includes a top wall 92 which forms, together with the continuous side wall 93, a struc* ture corresponding substantially to an open bottom container.
  • a tubular member 96 is fixed to an upwardly extending thread pin 97 which passes through an opening of the top wall 92 and which is in engagement with a nut 98 which thus fixedly connects the tubular member 96 to the arm H, adjacent to the front end thereof.
  • a second tubular member 99 is telescoped within the tubular member 96 and a pin 100 is fixed to and extends laterally from the tubular member 99 through an axially extending slot 101 formed in the tube 96 so that tubes 96 and 99 can not turn with respect to each other.
  • the tube 99 can move axially with respect to the tube 96 within the limits of the slot 101.
  • a spring 102 is located within the space defined by the tubes 96 and 99 and the ends of the spring 102, respectively, bear against the ends of the tubes 96 and 99 to urge the latter downwardly.
  • a springy clip 103 is fixed to the bottom wall of the tube 99 by a rivet or the like, and this springy clip 103 is provided with downwardly extending springy tongues which engage the shaft 94 of the front set of top rolls 95 in the manner indicated in Fig. 14 so as to position the top rolls 95 on the bottom rolls 87 and to hold the top rolls 95, when arm H is raised. When the arm H is raised to its inoperative position the pin 100 will engage the bottom end of slot 101 to prevent the bottom rolls 95 from being separated from the arm H.
  • a manually operative pressure element 104 is provided with an enlarged bottom end 105 located beneath the top wall 92 and having opposed inclined side faces shown in Fig. 13 for a purpose described below.
  • the wall 92 is formed with a downwardly extending tubular portion 106 which defines an opening through which the element 104 slidably extends so that the tubular portion 106 guides element 104 for movement in a direction substantially normal to the drawing plane.
  • the enlarged end 105 of element 104 engages the bottom face of the tubular portion 106 to limit upward movement of the element 104.
  • the opposed inclined lateral faces of the element 104 are located between and engage a pair of crossed levers 107 which are turnably carried by pin 108 so that these levers form a structure similar to a pair of scissors blades.
  • the bottom ends of the levers 107 respectively form the stationary catch members 109 which extend beneath the top wall of the upper portion 91 of catch member 89, in the manner indicated in Fig. 13, for maintaining the arm H in its operative position.
  • the levers 107 are urged toward each other by a spring 110 extending between and connected to these levers in the manner indicated in Fig. 13.
  • the pin 108 is carried by and extends between a pair of crossbars 111 which are fired to and extend between the side wall portions of the side wall 93, and of course the levers 107 extend between the bearings 111.
  • the operator need only depress the element 104 so as to spread the movable catch members 109 apart from each other by a distance greater than the width of the top wall of the catch portion 91 of T-shaped cross section. Then the arm H may be raised, and upon release of the element 104 the spring 110 returns the parts to the position indicated in Fig. 13. When the arm H is returned to its operative position the catch members 109 ride over the lateral side edges of the side wall of the catch portion 91 and then snap beneath the side edges to the position indicated in Fig. 13 so that the arm H is again retained in its operative position.
  • a top rolls carrying arm formed at a forward portion thereof which is located over the forward part of the drawing plane when said arm is in its operating position with an opening passing therethrough; support means supporting said arm for movement to and from an operating position; a stationary catch member carried by said support means adjacent a rear portion of said arm; a movable catch member movably carried by said arm adjacent said rear portion thereof for engagement with said stationary catch member to maintain said arm in its operative position; an elongated motion transmitting member having a rear end portion pivotally connected to said movable catch member; a bell crank turnably carried by said arm and having opposite free end portions one of which is pivotally connected to said motion transmitting member; and manually operable pressure means extending through said opening of said arm and engaging the other of said free ends of said bell crank, so that said pressure means may be pressed on by the operator to turn said bell crank and move said motion transmitting member to move said movable catch member out of engagement with said stationary catch member.
  • a top rolls carrying arm formed at a forward portion thereof which is located over the forward part of the drawing plane when said arm is in its operating position with an opening passing therethrough; support means supporting said arm for movement to and from an operating position; a stationary catch member carried by said support means adjacent a rear portion of said arm; a movable catch member movably carried by said arm adjacent said rear portion thereof for engagement with said stationary catch member to maintain said arm in its operative position; an elongated motion transmitting member having a rear end portion pivotally connected to said movable catch member; a bell crank turnably carried by said arm and having opposite free end portions one of which is pivotally connected to said motion transmitting member; a spring engaging the other of said free ends of said bell crank and being substantially unstressed when said catch members engage each other; and a pressure element engaging said spring and extending through said opening of said arm to be accessible to the operator.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
US499160A 1954-04-10 1955-04-04 Drawing mechanisms for spinning machines Expired - Lifetime US2943363A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES38655A DE1034525B (de) 1954-04-10 1954-04-10 Oberwalzentrag- und Belastungsarm fuer Spinnereimaschinen-Streckwerke

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Publication Number Publication Date
US2943363A true US2943363A (en) 1960-07-05

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US499160A Expired - Lifetime US2943363A (en) 1954-04-10 1955-04-04 Drawing mechanisms for spinning machines

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US (1) US2943363A (fr)
CH (1) CH327228A (fr)
DE (1) DE1034525B (fr)
FR (1) FR1136281A (fr)
GB (1) GB779375A (fr)

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US2143996A (en) * 1937-03-26 1939-01-17 Whitin Machine Works Drafting mechanism
GB698958A (en) * 1951-03-01 1953-10-28 Tmm Research Ltd Improved means for supporting and loading the top rollers of textile drafting apparatus
GB706054A (en) * 1951-10-31 1954-03-24 Tmm Research Ltd Improvements in textile spinning and like machines
US2675586A (en) * 1949-05-29 1954-04-20 Suddeutsche Spindelwerke Zinse Drawing frame for spinning machines
US2688162A (en) * 1950-10-25 1954-09-07 Estirajes Balmes S A Pressure mechanism for the rollers of spinning and like machines
US2717426A (en) * 1952-01-30 1955-09-13 Casablancas High Draft Co Ltd Improvements in or relating to drafting mechanisms for textile fibres
US2787025A (en) * 1951-09-29 1957-04-02 Solanas Ramon Balmes Drawing mechanism for textile machines

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Publication number Priority date Publication date Assignee Title
FR1030206A (fr) * 1950-01-03 1953-06-10 Stellite Perfectionnements apportés aux dispositifs d'étirage pour la filature de coton, delaine, de rayonne, etc., et pour des étireuses de coton et autres
CH294643A (de) * 1951-03-19 1953-11-30 Sueddeutsche Spindelwerke Zins Streckwerk mit federbelasteten Oberwalzen.

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US2143996A (en) * 1937-03-26 1939-01-17 Whitin Machine Works Drafting mechanism
US2675586A (en) * 1949-05-29 1954-04-20 Suddeutsche Spindelwerke Zinse Drawing frame for spinning machines
BE505388A (fr) * 1950-09-23
US2688162A (en) * 1950-10-25 1954-09-07 Estirajes Balmes S A Pressure mechanism for the rollers of spinning and like machines
GB698958A (en) * 1951-03-01 1953-10-28 Tmm Research Ltd Improved means for supporting and loading the top rollers of textile drafting apparatus
US2787025A (en) * 1951-09-29 1957-04-02 Solanas Ramon Balmes Drawing mechanism for textile machines
GB706054A (en) * 1951-10-31 1954-03-24 Tmm Research Ltd Improvements in textile spinning and like machines
US2717426A (en) * 1952-01-30 1955-09-13 Casablancas High Draft Co Ltd Improvements in or relating to drafting mechanisms for textile fibres

Also Published As

Publication number Publication date
GB779375A (en) 1957-07-17
CH327228A (de) 1958-01-31
DE1034525B (de) 1958-07-17
FR1136281A (fr) 1957-05-10

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