US2808634A

US2808634A - Adjustable slub catcher

Info

Publication number: US2808634A
Application number: US506519A
Authority: US
Inventors: Audy J Redmond
Original assignee: Individual
Current assignee: Individual
Priority date: 1955-05-06
Filing date: 1955-05-06
Publication date: 1957-10-08
Anticipated expiration: 1974-10-08

Description

06L .1957 A. J. REDMOND 2,808,634

ADJUSTABLE SLUB CATCHER Filed May 6, 1955 I 2 Sheets-Sheet l m Fig.

A'udy 'J. Redmond INVENTOR.

Q -BY W Oct. 8, 1957 A. J. REDMOND ,8

ADJUSTABLE SLUB CATCII-IER Filed May 6, 1955 2 Sheets-Slieet 2 Fig.5

Aud J. Redmond y INVENTOR.

United States Patent ADJUSTABLE SLUB CATCHER Andy I. Redmond, Gastonia, N. C., assignor of fifty percent to James C. Smith, Gastonia, N. C.

Application May 6, 1955, Serial No. 506,519

Claims. (Cl. 28-64) This invention comprises novel and useful improvements in an adjustable slub catcher and more specifically relates to an attachment which may be applied to various types of textile machines for detecting the presence of slubs or excessive enlargements of the yarn being handled by the machine.

The principal object of this invention is to provide a slub catcher which shall be capable of easy adjustment to catch slubs or enlargements of various predetermined sizes in the yarn passing through the device.

A further object of the invention is to provide an adjustable slub catcher having improved means for catching slubs or other enlargements in yarn.

Yet another object of the invention is to provide a slub catcher having various convenient types of adjustments whereby the device may be adapted to catch slubs of different sizes.

These together with other objects and advantages which will become subsequently apparent reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming a part hereof, wherein like numerals refer to like parts throughout, and in which:

Figure 1 is a top plan View of a preferred embodiment of a slub catcher in accordance with this invention;

Figure 2 is a side elevational view of the arrangement of Figure 1;

Figure 3 is a side elevational view of a cam adjustment for adjusting the slub catcher to different sizes of y r Figure 4 is an end elevational view taken from the left end of Figure 3;

Figure 5 is a top plan view of a modified construction of slub catcher in accordance with this invention;

Figure 6 is a side elevational view and arrangement of Figure 5;

Figure 7 is a vertical transverse sectional view taken substantially upon the plane indicated by section line 7-7 of Figure 5 and showing more clearly the manner for adjusting the movable anvil of the slub catcher;

Figure 8 is a perspective view of a tensioning member forming a part of the slub catcher of Figure 5;

Figure 9 is an end elevational view, showing in vertical section a still further modified adjusting means of a slub catcher; and

Figure 10 is a detailed view taken in vertical section substantially upon the plane indicated by section line 1010 of Figure 7.

Referring first to Figures 1-4, it will be seen that the slub catcher illustrated therein consists of a supporting frame indicated generally by the numeral 10 and which is adapted to be mounted as by perforated lug 12 to any convenient portion of a textile machine, for which the services of the slub catcher are desired.

The supporting frame at one end is provided with a pair of

jaws

14 and 16 having guiding surfaces whereby a strand of yarn 18 may be passed through a guiding eye 20 for passage through the slub catcher.

The

slub catcher is provided with conventional tensioning weights 22 for applying tension to the strand being passed through the device, which tensioning means may be of t a conventional design, such as that shown in the prior patent to Goodhue et al. Patent No. 2,691,810 of October 19, 1954, the details of this tensioning means forming in themselves no part of the present invention. After passing through the weight tensioning means 22, the yarn passes through a tensioning bar as sembly and a slub catcher arrangement of a construction forming the subject of this invention and to be now described.

Extending transversely of the frame 10 is a bar 24 upon which is secured a plate-like member 26, in any suitable manner, this bar and/or the bar and plate constituting a stationary fixed anvil having a fiat substantially horizontally disposed plane surface which constitutes the anvil of the slub catcher.

Mounted upon the frame 10 and detachably secured thereto as by a fastening bolt 28 is a supporting bracket 30 from which rises a vertically extending lug or standard 32.

Extending laterally from this lug is a shaft or axle constituting a pivotal support 34, which has an enlarged headed extremity 36 and which extends transversely to ward the other side of the frame. A holder 38 is provided with a pair of

lugs

40 and 42 constituting hinges, and by means of which the holder is journalled for pivotal movement upon the axle 34. A coiled torsion spring 41 surrounds the pivot pin 34 and is secured to the same and to the holder whereby to yieldingly urge the holder for pivotal movement about the horizontally extending pivot pin, and towards the anvil. v

Carried by the holder is a yarn engagingelement consisting of a plate 44 which is detachably secured to the holder as by bolts 46, and which plate at its lower end is provided with a plurality of needles 50.

The lower ends or points of the needles are disposed in a straight row, which row is at all times in parallel relation to the surface of the anvil 26 whereby upon pivotal movement of the holder about the pivot pin 34, the needles may be raised or lowered with respect to the surface of the anvil and thus provide a varying gap therebetween;

In order to adapt the yarn engaging elements for use with'yarns of diiferent size and to permit the passage of slubs of different size, it is necessary to accurately control the width of this gap or slot. For that purpose, there is provided an adjusting or a movement limiting element for the holder and yarn engaging'element which adjustably limits the spacing of the yarn engaging elements from the anvil under the operation of the spring All. This means preferably comprises in the embodiment illustrated a polygonal shaped cam 52 having a finger engaged head 54 by which the cam may be rotated upon its shaft 56. The shaft 56 is j-ournalled in the holder 38 in such a manner that upon rotation of the cam head 52, the various fiat surfaces thereof, which are eccentric with respect to the axis of the shaft 56, may be selectively engaged with a fiat surface 58 constituting an abutment surface on the bracket 3% It will thus be seen by rotating the cam member, that various predetermined clearances may be provided between the needles and the anvil surface and thus provide a slot of a predetermined size which will permit slubs or enlargements of less than that predetermined size to pass through the same type adapted for operation by 'a screwdriver 62 whereby the shaft 56 may be lockedinvits adjusted'position,

' It will thus be seen that the spring 41 yieldingly urges the yarn engaging element towards the: anvil, which movement is limited by the adjustment cam previously menlioned.

In order to. render .more effective. the action of the slub catchenthere is providedapair oftensioning

bars

64 and 66 which are secured to. the frame 10 and extend transversely of the same infront andv to the rear of the anvil, and-preferably slightly above the gap-between the yarn engaging means and the anvil, whereby the yarn 18. will be held downwardly. upon the surface of the anvil for passage through the slot.

It will be observed from Figures "1 and' 2 that the anvil and the yarn engaging vneedles extend substantially transversely of the line of travel of the yarn through the device, and thatthe needles are inclined downwardly and toward the source from which the yarn travels at an angle of substantially 45 with respect thereto. r

Reference is now made to Figures 5-8 and' for description of a second embodiment in accordance with the principles of this invention.

In this embodiment the same general construction of the supporting'frame 10 with its mounting lug 12 and

jaws

14 and 16 with guiding eye 20 are provided. There is further provided the weighted tensioning members 22 as in the preceding embodiment.

However, in this form while an adjustable slotor clearance is provided between the yarn engaging elements or needles 5!) carried by the holder 38 is provided, the adjustment of the slot between the same and the anvil is effected by movement of theyanvil towards the holder rather than by moving the holder relative to the anvil as in the preceding embodiment. For this purpose the frame is provided with a. supporting bracket 7 0 having a laterally extending pivot pin 72, upon which the holder 38 is journalled by means of its

lugs

40 and 42. There is also provided the spring member 41 as in the preceding embodiment which yieldingly urges the holder towards the anvil 74. It will-be observed, however, that in this embodiment the longitudinal axes of the pin 72, the holder 38 and the anvil 74 are disposed at acute angle with respect to the line of travel of the strand 18. This angular disposition has the efiect of increasing the number of needles of the yarn engaging elements which will be effective to catch any slub or enlargement of the yarn passing through the slot. 7

Inthis embodiment, as shown somewhat more clearly in Figure 7, it will be seen that the anvil 74 consists of a cylinder having pintles or

trunnions

76 and 78 on its opposite extremities. The trunnion 76 ispreferably journalled in a bore or bearing 80 in the brackets 70, while the trunnion 78 extends through a portion of the supporting frame 10. The cylinder 74 is positioned eccentrically with respect to its trunnions so that upon rotation of the cylinder and its trunnions and their supporting journals, the surface will be moved towards and from the needles 50 to thereby vary the slot or gap therebetween.

In order to adjust by rotation of the cylinder 74 the width of the slot or gap, an adjusting head 84 is secured on the end of the trunnion 78 and is provided with a pin 86, which as shown in conjunction with Figure 10,

'is selectively engageable in one of the series of depressions or recesses 88 formed in the adjacent surface of a disc 90 which is secured as by a screw 92 to a portion of the support frame 10. Thus, by positioning the screw 86 in a selected recess 88, controllable rotation may be imparted to the cylindrical anvils 74 to thus vary the width of the slot and thus adjust the action of the slub catcher. I

The operation of this form of the invention, as so far described, is identical with that previously set forth. However, there are provided guide and tensioning bars cooperating with the anvil and the yarn engaging elements. Thus, there is provided a combined guide and tension means indicated generally by the numeral 96. As

shown in Figure 8, this member preferably comprises a rod-like or wire-like member bent at one end to form an eye 98 by means of which the same is secured as through a fastening screw 100 to a portion of the frame 10. From this eye the member includes a pair of closely spaced substantially

parallel leg members

102 and 104 which at their outer ends are provided with divergent extremities v1.06 and 108 to facilitate the positioning of the strand 18 therebetween.

As shown in Figure 5, the member 96 is disposed with its legs 10.2 and 104 in parallel relation to. the. longitudinal axis of theslot or gap between the needles andthe anvil, the axis of the anvil'and' the axis about whichthe holder 38 is pivotally mounted.

There is also provided a U-shaped pair of tension bars disposed on opposite sides of the slot. Thus, a wire-like member 110 is provided having parallel front and rear arms 1'12 and 114, the latter being suitably mounted on the rear portion of the holder '38.

It should be observed that in both this embodiment as well as the embodiment of Figures 1-4, there is provided a rearward slub catcher or tension bar arrangement, the same including, a slot 116 disposed in the rear end of the supporting frame 10 as shown in Figure 2, and as shown at 118 in Figure 6. The opening 118 is disposed in substantially the same plane as that of'the slot, and is defined between the top surface of the end of the frame and a transversely disposed bar 120 carried by the frame. In both the embodiments now described, it will be seen that there are provided at least =tour'slub catchers, these consisting of

arms

64 and 66, the slot of the slub catcher, and the slot 116 of Figures 1-4 and the

members

112, 114, 1-18 and the slot through the slub catcher of Figures 5-7.

In this last embodiment, it will be observed that the holder has its resiliently urged pivotal movement as in the preceding embodiment. The only difference as regards the holder in this embodiment is that the same is disposed at acute angles with respect to line of travel of this strand of yarn. However, in this embodiment adjustment of the width of the slot is effected not by movement of the holder, but by movementof the anvil.

As shown in the further'modified form of -Figure 9, it is possible to employ a micrometer screw to effect the adjustmentof the slot. Theform of Figure 9'corresponds to the embodiment of Figures l-4, except that instead of the holder 38 being provided with the adjusting cam, itis provided witha micrometer screw 130, which is loosely received in a bore 132 extending vertically through the holder adjacent one end of the same. A screw-threaded member 134 is securedtothe holder as by a screw 136, and has the screw threaded therethrough. This screw is provided with a micrometer head with suitable calibrations, whereby the relative adjustment of the screw can be accurately determined; The screw engages the abutment surface'58'of'the'bracket 30 as in the embodiment of Figures 1-4. Thus, by adjustment of the screw, the position of the holder and-consequently the width of the slot of the slub catcher maybe accurately controlled.

- The foregoing is considered as illustrative only of the principles of the invention Further, since numerous modifications and changes will readily occur to those skilled in the .art, it is not desired to limit the invention to the exact constructionand operation shown and described, and accordingly all suitable modifications and equivalents-may be resorted to, falling within the scope of the invention as claimed. s

What is claimed as new is as follows:

1. A slub catcher for textile machinescomprising an elongated frame'adapted for mounting upon a textile machine, means for guiding and'means for terlsioning a yarn during passage longitudinally of said frame, an anvil having a smooth horizontal yarn engaging surface extending transversely of said" frame, a holder having a yard engaging element extending transversely of said frame, means on said frame at one side thereof for supporting said holder with said yarn engaging element at a predetermined distance from said surface to provide a slot of uniform width therebetween for passage of yarn therethrough, said supporting means including an axle projecting transversely of said frame, said holder being pivoted upon said axle whereby said element may be moved towards and from said surface to vary the width of said slot, a cam rotatably mounted upon said holder, an abutment on said supporting means for engagement by said cam to thereby limit movement of said element towards said anvil, said cam having a stem journaled in said holder and a periphery provided with a plurality of flat surfaces at different distances from the axis of said stern, said flat surfaces upon rotation of the cam about the stem being selectively positioned for engagement with said abutment.

2. A slub catcher for textile machines comprising an elongated frame adapted for mounting upon a textile machine, means for guiding and means for tensioning a yarn during passage longitudinally of said frame, an anvil having a smooth horizontal yarn engaging surface extending transversely of said frame, a holder having a yarn engaging element extending transversely of said frame, means on said frame at one side thereof for supporting said holder with said yarn engaging element at a predetermined distance from said surface to provide a slot of uniform width therebetween for passage ofyarn therethrough, said supporting means including an axle projecting transversely of said frame, said holder being pivoted upon said axle whereby said element may be moved towards and from said surface to vary the width of said slot, a cam rotatably mounted upon said holder, an abutment on said supporting means for engagement by said cam to thereby limit movement of said element towards said anvil, said cam having a stem journaled in said holder and a periphery provided with a plurality of flat surfaces at different distances from the axis of said stem, said flat surfaces upon rotation of the cam about the stem being selectively positioned for engagement with said abutment, said stem being positioned substantially parallel to said axle, said cam having a finger grip portion extending to one side of said frame.

3. A slub catcher for textile machines comprising an elongated frame adapted for mounting upon a textile machine, means for guiding and means for tensioning a yarn during passage longitudinally of said frame, an anvil having a smooth horizontal yarn engaging surface extending transversely of said frame, a holder having a yarn engaging element extending transversely of said frame, means on said frame at one side thereof for supporting said holder with said yarn engaging element at a predetermined distance from said surface to provide a slot of uniform width therebetween for passage of yarn therethrough, said supporting means including an axle projecting transversely of said frame, said holder being pivoted upon said axle whereby said element may be moved towards and from said surface to vary the width of said slot, a cam rotatably mounted upon said holder, an abutment on said supporting means for engagement by said cam to thereby limit movement of said element towards said anvil, said cam having a stem journaled in said holder and a periphery provided with a plurality of flat surfaces at different distances from the axis of said stem, said flat surfaces upon rotation of the cam about the stem being selectively positioned for engagement with said abutment, means on said holder for locking said cam in rotationally adjusted position about the axis of said stem.

4. A slub catcher for textile machines comprising an elongated frame adapted for mounting upon a textile machine, means for guiding and means for tensioning a yarn during passage longitudinally of said frame, an anvil having a smooth horizontal yarn engaging surface extending transversely of said frame, a holder having a yarn engaging element extending transversely of said frame, means on said frame at one side thereof for supporting said holder with said yarn engaging element at a predetermined distance from said surface to provide a slot of uniform width therebetween for passage of yarn therethrough, said supporting means including an axle projecting transversely of said frame, said holder being pivoted upon said axle whereby said element may be moved towards and from said surface to vary the width of said slot, a cam rotatably mounted upon said holder, an abutment on said supporting means for engagement by said cam to thereby limit movement of said element towards said anvil, said cam having a stem journaled in said holder and a periphery provided with a plurality of flat surfaces at different distances from the axis of said stem, said flat surfaces upon rotation of the cam about the stern being selectively positioned for engagement with said abutment, means on said holder for locking said cam in rotationally adjusted position about the axis of said stem, said last means having operative engagement with said stem.

5. A slub catcher for textile machines comprising an elongated frame adapted for mounting upon a textile machine, means for guiding and means for tensioning a yarn during passage longitudinally of said frame, an anvil having a smooth horizontal yarn engaging surface extending transversely of said frame, a holder having a yarn engaging element extending transversely of said frame, means on said frame at one side thereof for supporting said holder with said yarn engaging element at a predetermined distance from said surface to provide a slot of uniform width therebetween for passage of yarn therethrough, said supporting means including an axle projecting transversely of said frame, said holder being pivoted upon said axle whereby said element may be moved towards and from said surface to vary the width of said slot, a cam rotatably mounted upon said holder, an abutment on said supporting means for engagement by said cam to thereby limit movement of said element towards said anvil, said cam having a stem journaled in said holder and a periphery provided with a plurality of flat surfaces at different distances from the axis of said stem, said flat surfaces upon rotation of the cam about the stem being selectively positioned for engagement with said abutment, said cam comprising a body composed of a regular polygon, said stem being eccentric to the geometric center of the polygon, the periphery of the cam constituting the sides of the polygon;

References Cited in the file of this patent UNITED STATES PATENTS 793,084 Mills June 27, 1905 2,002,843 Twesdall May 28, 1935 2,561,126 Lewis July 17, 1951 2,654,938 Kennedy Oct. 13, 1953 2,691,810 Goodhue et a1 Oct. 19, 1954 FOREIGN PATENTS 123,492 Switzerland Nov. 16, 1927 1,070,181 France Feb. 17, 1954