US1933130A - Knitting machine - Google Patents

Knitting machine Download PDF

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US1933130A
US1933130A US474770A US47477030A US1933130A US 1933130 A US1933130 A US 1933130A US 474770 A US474770 A US 474770A US 47477030 A US47477030 A US 47477030A US 1933130 A US1933130 A US 1933130A
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thread
guide
cam
parts
movable
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US474770A
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Wildt Edwin
Holmes Henry Harold
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Wildt and Co Ltd
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Wildt and Co Ltd
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    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04BKNITTING
    • D04B9/00Circular knitting machines with independently-movable needles
    • D04B9/26Circular knitting machines with independently-movable needles for producing patterned fabrics
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04BKNITTING
    • D04B9/00Circular knitting machines with independently-movable needles
    • D04B9/26Circular knitting machines with independently-movable needles for producing patterned fabrics
    • D04B9/28Circular knitting machines with independently-movable needles for producing patterned fabrics with colour patterns

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  • KNITTING MACHINE Filed Aug. 12, 1950 4 Sheets-Sheet 4 Patented Oct. 31, 1 933 KNITTZNG MACHINE Edwin Wildt and Henry Harold Holmes, Leicester, England, assignors to Wildt'and Company Limited, Sheffield, England, a British company Application. August 12, 1930, Serial No. 474,770, and in Great Britain September 18, 1929 15 Claims.
  • This invention consists in improvements in or relating co-knitting machines and has for its object to provide an improved patterning means in which one or morev thread-guides is or are employed for supplying a striping thread or threads to the needlesand each guide is capable of being shogged across theline of the needles for the purpose of producing the requisite pattern;
  • a devicefor shogging a thread-guide comprises in combination two members or two-parts of a single member, which members or parts are so coupied or mounted as to move simultaneouslyin opposite directions, and a thread-guide supported on or otherwise movable in company at leastone of said members so as to be traversed lengthwise of the needle-bed.
  • the shogging device is combined with actuating means to apply, alternately first to one and then to the other of said members or parts, a thrust always in thesame direction.
  • actuating means to apply, alternately first to one and then to the other of said members or parts, a thrust always in thesame direction.
  • the thrustimparted to one member or part will move the other memberor part in the opposite direction.
  • a thrust imparted to one member or part in one direction causes the thread-guide to be moved, in the same direction as the ground thread moves,
  • a modification of the invention comprises the combination of a shogging device for a threadguide, pattern means, and an operative connection between the pattern means and the threadguide whereby the latter is selectively controlled to cause it to bring its thread to the backs .or to the fronts of the needles at will either during the shogging movement or prior to, or subsequently to, the said movement.
  • the thread-guide in its normal po- 1 sition will, during a shogging movement, pass its thread across the fronts of the needles, and the pattern mechanism, when it is operative on the thread-guide, moves the latter so as to bring its thread to the backs of the needles.
  • Figure 2 shows the patterning head in sectional elevation in a plane containing the axis of the needle-cylinder
  • Figure 3 is a sectionon the line33 of Figure 2 Figure 4 shows, in plan, on an enlarged scale, the position of cams for controlling stitch-drawing elements;
  • Figure 5 is a section on the line 575 of Figure 3, showing, in detail, one of the cams illustrated in Figure 4 and one of the stitch-drawing elements; v
  • Figure 6 is a section on the line 6-6 of Figure 2;
  • Figure 7 is a view similar to Figure 6 of certain parts of the mechanism shown inthat figure in. a different position from that in which they illustrated in Figure 6;
  • Figure 8 is a detail of the stitch-cam
  • Figure 9 is a detail of the actuatorfor the oppositely-movable members in one of which the thread-guide is mounted.
  • each thread-guide 10 which extend lengthwise in the direction of the axis of the cylinder of a stationary cylinder type of machine.
  • Each thread-guide is pivoted between, its ends at 11 in one member 12 of the oppositely-movable members above referred to, and the other member is shown at 13.
  • the members 12 and 13 are movs able lengthwise of the needle bed (which means in circular paths in the machine illustrated, around the machine axis, since this is a circular machine) on a horizontally-disposed circular bed 1e supported from a central fixed spindle 15.
  • the latch guard 9 (Fig. 1) can be assumed to be also the revolving thread-guide which feeds a thread (the ground thread) to the needles 50,
  • each member such as 12 and '13, either above or below-said member.
  • each member such as 12 and '13, either above or below-said member.
  • each member and those for the outer members,such as 12, are represented by the reference numeral 16, and those for the inner members, such as 13, are represented by the reference numeral 17. It will be seen, particularly from Figure 6, that there are four pairs of such channels intended to accommodate four pairs of members 12 and 13, and each pair of channels 16 and 17 are joined at one end by a communicating portion 18.
  • a projection from each member 12 and 13 extends into its own channel.
  • the projection from the member 12 is shown as an arcuate block 118 secured to the member 12 by means of screws 19
  • the projection from the member 13 comprises two pins 20 and 21 which are secured to the member 13 by means of screws, not shown in detail in the drawings.
  • a thrust applied to either of the members 12 or 13 in a clockwise direction (viewed in Figure 6) will be transmitted through the rolling elements 22 to the other member to move it in an anti-clockwise direction.
  • a collar 24 which surrounds the spindle 15, is secured a collar 24 (see particularly Figures 2 and 9) and from the collar there projects a bracket 25 (see Figures 2, 6, 7 and 9) which is in the form of an open frame and supports a spindle 26.
  • the other arm 28 extends upwardly.
  • the sliding movement of the bellcrank on the spindle 26 is radial with respect to the axis of the bed 14, and the hook 29, when the bellcrank is at one end of its travel, is in a position to engage the movable members 12, and at the other end of its travel it will engage the movable members 13.
  • the limb 28 isengaged by a spring-controlled detent 30 which is pivotally mounted at 31 in the frame or bracket 25 and at its other end is normally pulled towards the arm 28 by a spring 32.
  • the shape of the edge of the detent 30 which engages the limb 28 is, 'as shown clearly in Figure 7, such as to assist in a quick snap-over movement of the bellcrank on the spindle 26, and to hold the bellcrank at one or the other of its limits of movement.
  • the opposite or tail end is of greater width and the curvature of its opposite edges is such that, assuming the arm 28 in travelling round meets one edge of the switch-over cam, the curvature of the tail end of the latter is such that continued movement of the limb 28 past ihe pivot 35 throws the switch-over cam into its opposite position so that the next time that the arm 28 reaches the facing end of the switch-over cam it will engage with the opposite edge of it.
  • the switch-over cam 34 will be in the position shown in Figure 7, and as the arm 28 reaches the switch-over cam it will pass in contact with the outer edge thereof.
  • the first effect will be to push the bellcrank 27, 28 along the spindle 26 to the outermost position. Further rotation of the bellcrank will cause the limb 28 to rub against the outer edge of the tail end of the switch-over cam 34 and throw it over from the position shown in Figure 7 (i. e. the chain-line position in Figure 6) to the full-line position shown in Figure 6.
  • the intention of the construction according to this invention is to provide a thread-guide, the normal position of which is such that unless it is disturbed from that position by selecting mechanism it will shog its thread across the fronts of the needles. Nevertheless, the invention is not so limited to such an arrangement, as will be apparent.
  • a tricked dial 49 beneath the bed 14, and also fixed to the spindle 15, is a tricked dial 49, in the tricks of which are thread-drawing hooks 41 ( Figures 2 to 5).
  • Thread-drawing hooks 41 stands opposite a space between two adjacent needles, and there will be as many of the hooks as necessary, as will be understood from what follows; usually we provide a hook for'each of the long inner portions have been omitted fromint'erne'ed-le space throughout the are or arcs swept over by the thread-guideor thread-guides 10.
  • a cam-carrier Rotatably mountedon the spindle l5zabove the dial 40 is a cam-carrier in the form of a radial arm 42 that has an upwardly-extending jaw 43 embracing a radially-projecting pin 44 secured to the part .45 of the member l2 in which the thread-guide 10 is actually pivoted.
  • the camcarrier 42 will be similarly oscillated.
  • an out-throw-cam 46 and a return cam 47 which engage upwardly-projecting butts 48 formed on the hooks 41'.
  • the out-throw-cam 46 is, as shown in Figure 5, mounted so that it is vertically movable and is normally spring-pressed downwardly by a compressionspring 51 contained in a recess in the cam-carrier in which an upwardly-projecting spindle from the cam 46 is received'
  • the spring 51 will permit the cam 46 to ride over the tops of the butts.
  • the leading edge of the cam as it engages the butts to ride over their tops may be chamfered to facilitate the rise of the cam-46 against the spring 51.
  • a hit 53 is shown on the left-hand side of the drum as having been moved downwardly so that its butt has engaged an adjustablesetscrew 56 which constitutes the operative end of the threadguide 10 and has thrust the thread-guide so' that its thread-guiding portion 57 is in a position to guide the thread across the backs of the needles.
  • each selector'59 is made up of a long outer portion and a short inner portion joined to the outer portion,
  • the hooks 41 engage over thethe drawing.
  • the bit-wheel 60 rotates about an axis that is "radial with respect to theneedlecylinder and is also revolved bodily, around that axis. In this wheel sliding bits or intermediate selectors fil-areprovided, and as the wheel rotates on its axis, and around the axis of the cylinder,
  • the bit-wheel is carried in a bracket 62'extending from the sleeve. 63 that revolves on the fixed-sleeve 37, and a bevel" wheel 64 on the spindle of the bit-wheel Gilmeshes with-a fixed bevel wheel 65, also secured to the fixed sleeve 37l
  • the main drive for the machine is connected to a vertical shaft 66 which, by means of bevel gearing 67,68 drives a radially-disposed shaft 69 above the patterning head.
  • the shaft 69 has two bevelled pinions '70 and '7l,'of which the pinion 70 engages acorrespondinglybevelled pinion '72 fast on the upper end of the sleeve 63, and the other pinion'll meshes with the bevelled pinion A's mechanism of this typeris well known, no
  • each thread-guide is described as havinglfou'r thread-guides, but the invention is not limited to this number as any. other preferred number may be employed and the arc swept out by each thread-guide may be:
  • the number of thread-guides will be con siderably less than the number of needles because owing to the-shogging movement each thread-guide may serve to pass the thread to quite a number of needles in its own sector or division of the needle-bed-
  • the pattern proof the thread-guide and partly by theselection shalld is determined partly by the angular throw imposed on the positionof the thread-guides by means of the jacquard device, bit-wheehandbits 61 and 5s.
  • a ring 77 loosely encircles the spindle of bit-wheel 60. opposite the ends of the bits 61 and is pivotally mounted at 1'7! in the ends of a U-shapedyoke .78 which'can swing about a pivot-pin '79 which is carried by bracket From the bottom of the ring '77 there is a projecting pin 80 which lies in the path of a camrise 81 formed on ring cam 82 secured to the under side of the gear ring 65. As'the rise 81 reaches the pin 80 it pushes the ring 77 radially outwards against the ends of the bits 61 and restores them to the position ready for re-selection by the selectors 59.
  • the bits 53 have overhanging projections at their upper ends which, at the'required time,'will be engaged by a revolving cam 83 that depends from an arm 84 integral with, or otherwise connected to, and carried round, with thebracket 62.
  • Bracket 85 also carried round with bracket 62, carries a selector return cam 86, which serves to return the selector levers 59 after the passage of wheel 60, ready for re-selection.
  • each thread-guides are not movable to a sufiicient extent to lay their threads into the hooks of all the needles. That is to say, of the four thread-guides of the machine illustrated, each serves to lay its thread into less than a quarter of the needles in the needle-bed. However, it is obvious of course that each arcuate track may extend for a greater or a lesser angular distance,
  • a thread-guide shogging device comprising in combination two adjacent parts adjacent the thread guide and coupled to "move simultaneously in opposite directions, a member movable over said parts to engage one or the other of said parts to carry' the same along with the member, and means for operatively connecting one of said parts with a thread-guide, whereby the latter is movable with the said part lengthwise of the needle-bed.
  • a thread-guide shogging device comprising in combination two adjacent parts adjacent the thread guide and coupled to move simultaneously in opposite di rections, means for operatively connecting one of said parts with a thread-guide, whereby the latter is movable with the said part lengthwise parts to engage one. or the other of said parts and carry the same along with the member, said member being alsomovable to positions in which it may engage alternately first one and then the other of said parts, andactuating means to move said member to positions in which it will engage alternately first one and then the other of said parts to thrust said parts alternately in the same direction.
  • a thread-guide shogging device comprising in combination two parts coupled to move simultaneously in opposite directions, means for operatively connecting one of said parts with a thread-guide, whereby the latter is movable with the said part lengthwise of the needle-bed, a member relatively movable past said parts to engage alternately first one of them and then the other, and an automatic change-over device for said member to transfer its thrust from one part to the other at each successive passage of the actuating means in relation to said part.
  • a thread-guide shogging device comprising in combination two parts coupled to move simultaneously in opposite directions, means for operatively connecting one of said parts with a thread-guide, whereby the latter is movable with the said part lengthwise of the needle-bed, actuating means comprising an abutment which is adjustably mounted to be engaged first with one and then with the other of said parts, means to cause a periodical relative passing movement between said abutment and said parts always in one and the same direction, and automatic shifting means to change theposition of said abutment between each such passing movement and the next in succession.
  • a thread-guide shogging device comprising in combination two parts coupled to move simultaneously in opposite directions, means for operatively connecting one of said parts with a thread-guide, whereby the latter is movable with the said part lengthwise of the needle-bed, actuating means comprising an abutment which is adjustably mounted to be engaged with first one and then the other of said parts, means to cause a periodical relative passing movement between said abutment and said parts always in one and the same direction, and automatic shifting means for changing the position of said abutment between each such passing movement and the next in succession, said shifting means comprising a slider on which the abutment is carried, an oscillating automatic switch-over cam, and a projection from the abutment to engage said cam first on one edge and then on the other.
  • a thread-guide shogging device comprising in combination two parts coupled to move simultaneously in opposite directions, means for operatively connecting one of said parts with a thread-guide, whereby the latter is movable with the said part lengthwise of the needle-bed, actuating means comprising an abutment which is adjustably mounted to be engaged with first one and then the other of said parts, means to cause a periodical relative passing movement between said abutment and said parts always in one and the same direction, and automatic shifting means to change the position of said abutment between each such passing movement and the next in succession, said shifting means comprising a slider on which the abutment is carried and anautomatic switchover cam pivoted intermediate its two ends with means to limit its movement 'in'bo'th'directions about its pivot, and a projection from the abut-' ment to engage said cam first on one edge and then on the other, the shape of the cam being such that the edge first presented for engagement with the projection will shift the-latter transversely to
  • a thread-guide shogging device comprising in combination two independent parts, means for operatively connecting one or" said parts with a thread-guide whereby the latter is movable with said part lengthwise of the needle-bed, a support for said parts, a channel in said support having two spaced and interconnecting limbs, a projection from each part, whereof said projections extend respectively into the two limbs of the channel, and a row of contacting rolling elements filling the length of the channel between the said two projections for coupling the said two parts so that they will move simultaneously in opposite directions.
  • a thread-guide shogging device comprising in combination two parts coupled to move simultaneously in opposite directions, means for operatively connecting one of said parts with a threadguide, whereby the latter is movable with the said part lengthwise of the needle-bed, and means operable on a t read fed from the guide when the latter is moved against thenormal feed; direction of a ground-thread, which means will draw sufficient thread from the guide for each needle for the loop to be formed thereon.
  • a thread-guide shogging device comprising in combination two parts coupled to move simultaneously in opposite directions, means for operatively connecting one of said parts with a thread-guide, whereby the latter is movable with the said part lengthwise of the needle-bed, a plurality of thread drawing hooks each movable & across the line of needles, and means operable in succession on said hooks as the thread-guide is moved in a direction contrary to the normal feed direction of the ground-thread to move said hooks to draw sufficient thread from the threadguide for the loop tobe formed ,on each needle.
  • a thread-guide shogging device comprising in combination two parts coupled to move simultaneously in opposite directions, means for operativelyconnecting one 01' 7 said parts with a thread-guide, whereby the latter is movable with the said part lengthwise of the needle-bed, a plurality of thread drawing hooks each movable across the line of needles, and out throwand return-cams operable in succession on said hooks as the thread-guide is moved in a direction contrary to the normal feed direction of a ground-thread to draw sufiicient thread from the thread-guide for the loop to .be formed on each" needle, said out-throw-cam being yieldingly controlled and so shaped that when relative moveing means and the thread-guide, whereby ment takes place between it and the thread drawingihooks in the direction in which th hooks are not required to operate, the out-throw-cam will ride over said hooks without operating them.
  • a thread-' guide shogging device comprising in combination a support having in it two arcuate channels interconnected at one end by a communicating channel and concentric with the axis of the machine, two blocks having projections extending respectively into.
  • a threadguide shogging device comprising in combination a support having in it two arcuate channels interconnected at one end by a communicating channel and concentric with the axis of the machine,
  • an abutment carrier rotatable about the axis of the machine, an abutment pivotally mounted in saidcarrier on a radial spindie along which it can slide, said abutment being normally positioned to engage one or the other,
  • a projection from said abutment a projection from said abutment, an automatic switch-over cam situated in the path of the projection as it is rotated about the axis of the machine, and serving to throw the abutment -from one limit to the other of its radial movement alternately in successive passes of the abutment in relation to the switch-over cam, and thread drawing hooks movable radially and allocated one to each needle served by the threadguide, out-throwand return-cams carried coupled to oscillate with said thread-guide, said outthrow-cam being operable only on the thread drawing hooks when. the thread-guide is moved in a direction contrary to the normal feed direcion of a ground-thread.
  • said operative connection comprising a'tricked drum rotatable about an axis substantially parallel with the lengths of the selectors, means to traverse said drum across the line of the selectors, intermediate selectors which are carried in the tricks in said drum and which are movable by engagement with said selectors, a vertically mounted tricked drum above the thread guides, and bits in the tricks of said vertically mounted drum to actuate the thread guides, said bits being controlled by said intermediate selectors.
  • jacquard selecting means comprising a perforated jacquard-card and movable selectors controlled thereby

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Description

Oct. 31, 1933. E. WILDT ET AL KNITTING MACHINE Filed Aug. 12, 1930 4 Sheets-Sheet l Oct. 31, 1933.
E. WILDT ET AL KNITTING MACHINE Filed Aug. 12, 1930 III 4 Sheets-Sheet 2 YIYII'IIIIIII Oct. 31, 1933. E. WILDT ET AL 1,933,130
KNITTING MACHINE Filed Aug. 12, 1930 4 Sheets$heet 3 Oct. 31, 1933. E. WILDT ET AL 1,933,130
KNITTING MACHINE Filed Aug. 12, 1950 4 Sheets-Sheet 4 Patented Oct. 31, 1 933 KNITTZNG MACHINE Edwin Wildt and Henry Harold Holmes, Leicester, England, assignors to Wildt'and Company Limited, Leicester, England, a British company Application. August 12, 1930, Serial No. 474,770, and in Great Britain September 18, 1929 15 Claims.
This invention consists in improvements in or relating co-knitting machines and has for its object to provide an improved patterning means in which one or morev thread-guides is or are employed for supplying a striping thread or threads to the needlesand each guide is capable of being shogged across theline of the needles for the purpose of producing the requisite pattern;
According to the present invention, a devicefor shogging a thread-guide comprises in combination two members or two-parts of a single member, which members or parts are so coupied or mounted as to move simultaneouslyin opposite directions, and a thread-guide supported on or otherwise movable in company at leastone of said members so as to be traversed lengthwise of the needle-bed.
The expression shogging is to be understood as implying that the thread-guide moved lengthwise of the needle bed, that is to say,-along from one needle to another that is remote from it.
In one form of the invention, the shogging device is combined with actuating means to apply, alternately first to one and then to the other of said members or parts, a thrust always in thesame direction. Thus, the thrustimparted to one member or part will move the other memberor part in the opposite direction. If, for example,
a thrust imparted to one member or part in one direction causes the thread-guide to be moved, in the same direction as the ground thread moves,
it follows that a thrust applied to the other memher or part in the same direction will move the thread-guide backwardly in the contrary direction.
A modification of the invention comprises the combination of a shogging device for a threadguide, pattern means, and an operative connection between the pattern means and the threadguide whereby the latter is selectively controlled to cause it to bring its thread to the backs .or to the fronts of the needles at will either during the shogging movement or prior to, or subsequently to, the said movement.
Preferably, the thread-guide in its normal po- 1 sition will, during a shogging movement, pass its thread across the fronts of the needles, and the pattern mechanism, when it is operative on the thread-guide, moves the latter so as to bring its thread to the backs of the needles.
The foregoing and other features of the inven:
tion will be more clearly understood from the 101- lowing description which is that of a preferred .examplelofthe invention given in conjunction with the accompanying drawings, in which 1 Figure 1 is-a plan view of the parts shown in Figure 2 which includes one of several jacquard devices to be arranged around the patterning head; I
Figure 2 shows the patterning head in sectional elevation in a plane containing the axis of the needle-cylinder;
Figure 3 is a sectionon the line33 of Figure 2 Figure 4 shows, in plan, on an enlarged scale, the position of cams for controlling stitch-drawing elements;
Figure 5 is a section on the line 575 of Figure 3, showing, in detail, one of the cams illustrated in Figure 4 and one of the stitch-drawing elements; v
Figure 6 is a section on the line 6-6 of Figure 2;
Figure 7 is a view similar to Figure 6 of certain parts of the mechanism shown inthat figure in. a different position from that in which they illustrated in Figure 6;
Figure 8 is a detail of the stitch-cam, and
Figure 9 is a detail of the actuatorfor the oppositely-movable members in one of which the thread-guide is mounted. 1
Like reference numerals indicate like parts in all the figures of the drawings.
In the construction illustrated, there are four depending thread-guides 10 which extend lengthwise in the direction of the axis of the cylinder of a stationary cylinder type of machine. Each thread-guide is pivoted between, its ends at 11 in one member 12 of the oppositely-movable members above referred to, and the other member is shown at 13. The members 12 and 13 are movs able lengthwise of the needle bed (which means in circular paths in the machine illustrated, around the machine axis, since this is a circular machine) on a horizontally-disposed circular bed 1e supported from a central fixed spindle 15. The latch guard 9 (Fig. 1) can be assumed to be also the revolving thread-guide which feeds a thread (the ground thread) to the needles 50,
successively and "from which thread is knitted e. g. in the usual manner, the ground fabric on which the patterning is done by guides 10.
In the bed 14 there is an arcuate channel for. each member, such as 12 and '13, either above or below-said member. In the example illustrated,
the channel is beloweach member and those for the outer members,such as 12, are represented by the reference numeral 16, and those for the inner members, such as 13, are represented by the reference numeral 17. It will be seen, particularly from Figure 6, that there are four pairs of such channels intended to accommodate four pairs of members 12 and 13, and each pair of channels 16 and 17 are joined at one end by a communicating portion 18. A projection from each member 12 and 13 extends into its own channel. In Figures 2 and 6 the projection from the member 12 is shown as an arcuate block 118 secured to the member 12 by means of screws 19, and the projection from the member 13 comprises two pins 20 and 21 which are secured to the member 13 by means of screws, not shown in detail in the drawings. A row of rolling elements 22, in contact with one another, fills the length of the channel between the projections from the members 12 and 13 and extends around the communicating channel 18. Thus, a thrust applied to either of the members 12 or 13 in a clockwise direction (viewed in Figure 6) will be transmitted through the rolling elements 22 to the other member to move it in an anti-clockwise direction.
To a rotary sleeve 23, which surrounds the spindle 15, is secured a collar 24 (see particularly Figures 2 and 9) and from the collar there projects a bracket 25 (see Figures 2, 6, 7 and 9) which is in the form of an open frame and supports a spindle 26. On this spindle is rotatably and slidably mounted a bellcrank 27, 28, one limb 27 of which terminates in a hook 29 which lies over the bed 14. The other arm 28 extends upwardly. As will be seen from the drawings, the sliding movement of the bellcrank on the spindle 26 is radial with respect to the axis of the bed 14, and the hook 29, when the bellcrank is at one end of its travel, is in a position to engage the movable members 12, and at the other end of its travel it will engage the movable members 13. The limb 28 isengaged by a spring-controlled detent 30 which is pivotally mounted at 31 in the frame or bracket 25 and at its other end is normally pulled towards the arm 28 by a spring 32. The shape of the edge of the detent 30 which engages the limb 28 is, 'as shown clearly in Figure 7, such as to assist in a quick snap-over movement of the bellcrank on the spindle 26, and to hold the bellcrank at one or the other of its limits of movement.
In the operation of the parts so far described, it will be appreciated that the bellcrank 27, 28 is revolved around the axis of the fixed spindle 15 and, assuming that the bellcrank is in the position shownin Figure 6, and that it is moving in a clockwise direction, it will engage in succession each of the members 13.
It will, therefore, move each of the members 13 in a clockwise direction whereby the respectively associated member 12 will be moved in an anti-clockwise direction and just as one member 13 reaches the limit of its travel, limited by the length of its arcuate slot, the hook or claw 29 will engage with, and ride up, the sloping cam surface 33 formed on a block secured to the top of the bed 14. This lifting cam moves the claw out of engagement with the member 13 so that it passes out of contact therewith and travels round to engage the next member 13 in succession, and so on. It will be understood that there is a block 33 for each pair of members 12 and 13.
As the bell crank 27, 28 returns to its starting position it engages with an automatic switch-over cam 34. This cam is carried on a spindle 35 which depends from a bracket 36 and the latter extends from a boss which is clamped to a fixed sleeve 37 that surrounds the rotatable sleeve 23. The switch-over cam is arranged horizontally and pivoted intermediate its ends. The end facing the approaching bellcrank 27, 28 is tapered, as clearly shown in Figures 6, 7 and 8. The opposite or tail end is of greater width and the curvature of its opposite edges is such that, assuming the arm 28 in travelling round meets one edge of the switch-over cam, the curvature of the tail end of the latter is such that continued movement of the limb 28 past ihe pivot 35 throws the switch-over cam into its opposite position so that the next time that the arm 28 reaches the facing end of the switch-over cam it will engage with the opposite edge of it. In the foregoing description of the operation of the bellcrank 27, 28 it was assumed that it was at the innermost position on the spindle 26. Consequently, the switch-over cam 34 will be in the position shown in Figure 7, and as the arm 28 reaches the switch-over cam it will pass in contact with the outer edge thereof. As the switch-over cam is prevented from turning in an anti-clockwise direction, by limiting means to be described later, the first effect will be to push the bellcrank 27, 28 along the spindle 26 to the outermost position. Further rotation of the bellcrank will cause the limb 28 to rub against the outer edge of the tail end of the switch-over cam 34 and throw it over from the position shown in Figure 7 (i. e. the chain-line position in Figure 6) to the full-line position shown in Figure 6.
The bellcrank in rotating will now engage in succession with; members 12, and again when the limit of movement of each of the members is reached, the hook or claw 29 will be lifted from engagement with the member 12 by means of the associated lifting cam 33. When the limb 28 of the bellcrank next r aches the switch-over cam 34, it will engage with the inner edge thereof whereby the bellcrank will first be moved to its inner position on the spindle 26 and thereafter the switch-over cam will be thrown over from the full-line posiiion shown in Figure 6 to the full-line position shown in Figure 7.
In order to limit the rocking movement of the throw-over cam 34, a crank 38 secured to the upper end of the spindle 35 above the bracket 36 engages with limiting stops 39 fixed in the bracket 36.
The intention of the construction according to this invention is to provide a thread-guide, the normal position of which is such that unless it is disturbed from that position by selecting mechanism it will shog its thread across the fronts of the needles. Nevertheless, the invention is not so limited to such an arrangement, as will be apparent.
When the thread-guides are shogged in front of the needles the thread in passing in either direction will be taken into the hooks of the needles and will be drawn by them. In passing against'the normal direction of feed it is necessary, in order to prevent breakage of the thread, to supply to each needle substantially that amount of thread required for the stitch.
For this purpose, beneath the bed 14, and also fixed to the spindle 15, is a tricked dial 49, in the tricks of which are thread-drawing hooks 41 (Figures 2 to 5). Each of these thread-drawing hooks 41 stands opposite a space between two adjacent needles, and there will be as many of the hooks as necessary, as will be understood from what follows; usually we provide a hook for'each of the long inner portions have been omitted fromint'erne'ed-le space throughout the are or arcs swept over by the thread-guideor thread-guides 10. Rotatably mountedon the spindle l5zabove the dial 40 is a cam-carrier in the form of a radial arm 42 that has an upwardly-extending jaw 43 embracing a radially-projecting pin 44 secured to the part .45 of the member l2 in which the thread-guide 10 is actually pivoted. Thus; as the pin 44 is oscillated to-and-fro, the camcarrier 42 will be similarly oscillated. In the cam-carrier isan out-throw-cam 46 and a return cam 47 which engage upwardly-projecting butts 48 formed on the hooks 41'. ThusasSumin'g' the normal ieed direction is anti-clockwise; with reference to Figures 1, 3 and 4, the movement 7 of the thread-guide will be against the normal feeding direction when'itis' moved in a clockwise Tthread-guide can be effected by providing adjustable set screws 49 (Figure 2) .which'extend inwardly from the jaws 43 to engage the pin 44 and thereby enable the requisite angular adjustment to be made between the cam-carrier and the thread-guide. yarn after it has been laid around a needle',-one of which is shown in its normal idle position in.
Figure 2.
On the return-movement of the cam-carrier,- the return-cam will, of course, be clear of the butts 48 of the hooks 41. In order that during this movement the hooks shall not operate, the out-throw-cam 46 is, as shown in Figure 5, mounted so that it is vertically movable and is normally spring-pressed downwardly by a compressionspring 51 contained in a recess in the cam-carrier in which an upwardly-projecting spindle from the cam 46 is received' As the cam-oarrier is moved in an anti-clockwise direction, the spring 51 will permit the cam 46 to ride over the tops of the butts. The leading edge of the cam as it engages the butts to ride over their tops may be chamfered to facilitate the rise of the cam-46 against the spring 51. f
In order to control the action of the threadguides, there is supported, coaxially with the spindle l5 and above the mechanism so far described, a pattern-drum 52 having in it vertical tricks in which sliding bits 53 are provided,
These are retained in the drum by-means of the usual spring-rings 54 and at their lower extremities the bits are formed with butts55 which,
by vertical sliding movement-of the bits 53 can be moved into and out from the. paths of the upper ends of the thread-guides 19. In Figure 2, a hit 53 is shown on the left-hand side of the drum as having been moved downwardly so that its butt has engaged an adjustablesetscrew 56 which constitutes the operative end of the threadguide 10 and has thrust the thread-guide so' that its thread-guiding portion 57 is in a position to guide the thread across the backs of the needles.
In order to adjust the position of the bits 53 in the drum 52, there is provided a jacquard-control mechanism comprising a platen 58, endwise movable radialiy-disposed selectors 59, and a bitwheel 69. In the. machine illustrated, each selector'59 is made up of a long outer portion and a short inner portion joined to the outer portion,
see Fig. 1, and in that figure, for simplicity,- most" The hooks 41 engage over thethe drawing. The bit-wheel 60 rotates about an axis that is "radial with respect to theneedlecylinder and is also revolved bodily, around that axis. In this wheel sliding bits or intermediate selectors fil-areprovided, and as the wheel rotates on its axis, and around the axis of the cylinder,
these bits arebrought successively into contact with the .end of those selectors 59 that. have been,
moved forwardly by the selective action of the platen and a perforated sheet "or thelike which passes over the platen in a manner well known in-jacquard apparatus of this type. The bits 61 when they engage with the end of the selector 59 are moved radially inward with respect to the 1 axis of thespindle l5 and present surfaces which,
as they passover the bits 53 in the drum .52
.will depressthe latter so that the abutments 55 of those bits 53 thus selected are moved intoa position to engage the thread-guides 10.
The bit-wheel is carried in a bracket 62'extending from the sleeve. 63 that revolves on the fixed-sleeve 37, and a bevel" wheel 64 on the spindle of the bit-wheel Gilmeshes with-a fixed bevel wheel 65, also secured to the fixed sleeve 37l The main drive for the machine is connected to a vertical shaft 66 which, by means of bevel gearing 67,68 drives a radially-disposed shaft 69 above the patterning head. The shaft 69 has two bevelled pinions '70 and '7l,'of which the pinion 70 engages acorrespondinglybevelled pinion '72 fast on the upper end of the sleeve 63, and the other pinion'll meshes with the bevelled pinion A's mechanism of this typeris well known, no
further description is thought to-be necessary herein, particularly as the details of the mechanism constitute no part of the present invention.
In the foregoing description, the mechanism.
is described as havinglfou'r thread-guides, but the invention is not limited to this number as any. other preferred number may be employed and the arc swept out by each thread-guide may be:
reduced or'increased as the number of threadguides is increased or reducedrespectively. Generally, the number of thread-guides will be con siderably less than the number of needles because owing to the-shogging movement each thread-guide may serve to pass the thread to quite a number of needles in its own sector or division of the needle-bed- The pattern proof the thread-guide and partly by theselection duced is determined partly by the angular throw imposed on the positionof the thread-guides by means of the jacquard device, bit-wheehandbits 61 and 5s.
- There maybe only one jacquard-selecting de vice for the entire machine. as described in connection with the example illustrated in the ac-. companying drawings,'in which case the lay-out for the patternwill be: repeated at eachthreadguide. The bit-wheel in these circumstances will have its bits selected as it travels over the jacquard-selectors 59 andno further selection of the bits in the bit-wheel. will take place until it again reaches the jacquard device.= The 'invention is not limited to the use of one such device Bill I of the needle-bed, a member movable over said however, as will be apparent to those'skilled in these matters;
It will be understood that after the bit-wheel has completed a revolution around the axis of the spindle in the example described, (or
rather, after it has passed from the influence of one pattern mechanism and just before it is influenced again by a pattern mechanism) it is necessary to reset the bits 53 and 61. In order to reset the bits 61, a ring 77 loosely encircles the spindle of bit-wheel 60. opposite the ends of the bits 61 and is pivotally mounted at 1'7! in the ends of a U-shapedyoke .78 which'can swing about a pivot-pin '79 which is carried by bracket From the bottom of the ring '77 there is a projecting pin 80 which lies in the path of a camrise 81 formed on ring cam 82 secured to the under side of the gear ring 65. As'the rise 81 reaches the pin 80 it pushes the ring 77 radially outwards against the ends of the bits 61 and restores them to the position ready for re-selection by the selectors 59.
The bits 53 have overhanging projections at their upper ends which, at the'required time,'will be engaged by a revolving cam 83 that depends from an arm 84 integral with, or otherwise connected to, and carried round, with thebracket 62.
Another bracket 85, also carried round with bracket 62, carries a selector return cam 86, which serves to return the selector levers 59 after the passage of wheel 60, ready for re-selection.
In' the example described above, it is clear that the thread-guides are not movable to a sufiicient extent to lay their threads into the hooks of all the needles. That is to say, of the four thread-guides of the machine illustrated, each serves to lay its thread into less than a quarter of the needles in the needle-bed. However, it is obvious of course that each arcuate track may extend for a greater or a lesser angular distance,
and it is not essential to the invention that the arcuate tracks be arranged on the same single level, or that the radii of curvature of the inner tracks be less than that of the radii of the outer tracks as in the machine shown in the drawings. Furthermore, although the invention has been described in its application to a circular knitting machine having a stationary needle-cylinder, it will be readily understood by -i those'skilled in the art, that it. is not limited to the stationary cylinder type of machine, or indeed to circular machines. In general our invention is not limited to the details of construction and operation described above and illustrated in the drawings except as appears hereinafter in the claims. 7
We claim:
1. For a knitting machine, a thread-guide shogging device comprising in combination two adjacent parts adjacent the thread guide and coupled to "move simultaneously in opposite directions, a member movable over said parts to engage one or the other of said parts to carry' the same along with the member, and means for operatively connecting one of said parts with a thread-guide, whereby the latter is movable with the said part lengthwise of the needle-bed.
2. For a knitting machine, a thread-guide shogging device comprising in combination two adjacent parts adjacent the thread guide and coupled to move simultaneously in opposite di rections, means for operatively connecting one of said parts with a thread-guide, whereby the latter is movable with the said part lengthwise parts to engage one. or the other of said parts and carry the same along with the member, said member being alsomovable to positions in which it may engage alternately first one and then the other of said parts, andactuating means to move said member to positions in which it will engage alternately first one and then the other of said parts to thrust said parts alternately in the same direction.
3. For a knitting machine, a thread-guide shogging device comprising in combination two parts coupled to move simultaneously in opposite directions, means for operatively connecting one of said parts with a thread-guide, whereby the latter is movable with the said part lengthwise of the needle-bed, a member relatively movable past said parts to engage alternately first one of them and then the other, and an automatic change-over device for said member to transfer its thrust from one part to the other at each successive passage of the actuating means in relation to said part.
4. For a knitting machine, a thread-guide shogging device comprising in combination two parts coupled to move simultaneously in opposite directions, means for operatively connecting one of said parts with a thread-guide, whereby the latter is movable with the said part lengthwise of the needle-bed, actuating means comprising an abutment which is adjustably mounted to be engaged first with one and then with the other of said parts, means to cause a periodical relative passing movement between said abutment and said parts always in one and the same direction, and automatic shifting means to change theposition of said abutment between each such passing movement and the next in succession.
5. For a knitting machine, a thread-guide shogging device comprising in combination two parts coupled to move simultaneously in opposite directions, means for operatively connecting one of said parts with a thread-guide, whereby the latter is movable with the said part lengthwise of the needle-bed, actuating means comprising an abutment which is adjustably mounted to be engaged with first one and then the other of said parts, means to cause a periodical relative passing movement between said abutment and said parts always in one and the same direction, and automatic shifting means for changing the position of said abutment between each such passing movement and the next in succession, said shifting means comprising a slider on which the abutment is carried, an oscillating automatic switch-over cam, and a projection from the abutment to engage said cam first on one edge and then on the other.
6. For a knitting machine, a thread-guide shogging device comprising in combination two parts coupled to move simultaneously in opposite directions, means for operatively connecting one of said parts with a thread-guide, whereby the latter is movable with the said part lengthwise of the needle-bed, actuating means comprising an abutment which is adjustably mounted to be engaged with first one and then the other of said parts, means to cause a periodical relative passing movement between said abutment and said parts always in one and the same direction, and automatic shifting means to change the position of said abutment between each such passing movement and the next in succession, said shifting means comprising a slider on which the abutment is carried and anautomatic switchover cam pivoted intermediate its two ends with means to limit its movement 'in'bo'th'directions about its pivot, and a projection from the abut-' ment to engage said cam first on one edge and then on the other, the shape of the cam being such that the edge first presented for engagement with the projection will shift the-latter transversely to the direction of movement between the cam the rejection while the pressure between the two parts is preventedirom swinging the cam owing to the means for limiting its movement in that direction and further relative movement of the projection along the cam to the other side of the pivot thereof will continue to bear against the edge of the cam and will throw the latter over to the other limit of,
its pivotal movement.
7. For a knitting machine, a thread-guide shogging device comprising in combination two independent parts, means for operatively connecting one or" said parts with a thread-guide whereby the latter is movable with said part lengthwise of the needle-bed, a support for said parts, a channel in said support having two spaced and interconnecting limbs, a projection from each part, whereof said projections extend respectively into the two limbs of the channel, and a row of contacting rolling elements filling the length of the channel between the said two projections for coupling the said two parts so that they will move simultaneously in opposite directions.
8. For a knitting machine in which the groundthread is fed continuously in the same direction, a thread-guide shogging device comprising in combination two parts coupled to move simultaneously in opposite directions, means for operatively connecting one of said parts with a threadguide, whereby the latter is movable with the said part lengthwise of the needle-bed, and means operable on a t read fed from the guide when the latter is moved against thenormal feed; direction of a ground-thread, which means will draw sufficient thread from the guide for each needle for the loop to be formed thereon.
9. For a knitting machine in which the groundthread is fed continuously in the same direction, a thread-guide shogging device comprising in combination two parts coupled to move simultaneously in opposite directions, means for operatively connecting one of said parts with a thread-guide, whereby the latter is movable with the said part lengthwise of the needle-bed, a plurality of thread drawing hooks each movable & across the line of needles, and means operable in succession on said hooks as the thread-guide is moved in a direction contrary to the normal feed direction of the ground-thread to move said hooks to draw sufficient thread from the threadguide for the loop tobe formed ,on each needle.
10. For a knitting machine, a thread-guide shogging device comprising in combination two parts coupled to move simultaneously in opposite directions, means for operativelyconnecting one 01' 7 said parts with a thread-guide, whereby the latter is movable with the said part lengthwise of the needle-bed, a plurality of thread drawing hooks each movable across the line of needles, and out throwand return-cams operable in succession on said hooks as the thread-guide is moved in a direction contrary to the normal feed direction of a ground-thread to draw sufiicient thread from the thread-guide for the loop to .be formed on each" needle, said out-throw-cam being yieldingly controlled and so shaped that when relative moveing means and the thread-guide, whereby ment takes place between it and the thread drawingihooks in the direction in which th hooks are not required to operate, the out-throw-cam will ride over said hooks without operating them.
12. For a circular knittingmachine, a thread-' guide shogging device comprising in combination a support having in it two arcuate channels interconnected at one end by a communicating channel and concentric with the axis of the machine, two blocks having projections extending respectively into. the said two arcuatechannels, a thread-guide carried by one of said blocks, contacting rolling elements filling the channel space between the said projections round the communicating channel, an abutment carrier rotatable about the axis of the machine, an abutment pivotally mounted in said carrier on a radial spindle along which it can slide, said abutment being normally positioned to engage one or the other of said blocks, a projection from said abutment, and an automatic switch-over cam situated in the path of'the projection as it is 1'0- tated about the axis of the machine, and serving to throw the abutment from one limit to the other of its radial movement alternately in successive passes ofthe abutment in relation to the switchover cam. v
13. For a circular knitting machine, a threadguide shogging device comprising in combination a support having in it two arcuate channels interconnected at one end by a communicating channel and concentric with the axis of the machine,
two blocks having projections extending respectively into the said two arcuate channels, a threadguide carried by one of said blocks, contacting.
rollingelements filling the channel. space between the said projections round the communicating channel, an abutment carrier rotatable about the axis of the machine, an abutment pivotally mounted in saidcarrier on a radial spindie along which it can slide, said abutment being normally positioned to engage one or the other,
of said blocks, a projection from said abutment, an automatic switch-over cam situated in the path of the projection as it is rotated about the axis of the machine, and serving to throw the abutment -from one limit to the other of its radial movement alternately in successive passes of the abutment in relation to the switch-over cam, and thread drawing hooks movable radially and allocated one to each needle served by the threadguide, out-throwand return-cams carried coupled to oscillate with said thread-guide, said outthrow-cam being operable only on the thread drawing hooks when. the thread-guide is moved in a direction contrary to the normal feed direcion of a ground-thread.
14;,For a knitting machine, the combination of a thread-guide shagging device, jacquard selecting means comprising a perforated jacquard-card and movable selectors controlled thereby, and an operative connection-betweensaid selectors and the thread-guide whereby the latter is controlled,
said operative connection comprising a'tricked drum rotatable about an axis substantially parallel with the lengths of the selectors, means to traverse said drum across the line of the selectors, intermediate selectors which are carried in the tricks in said drum and which are movable by engagement with said selectors, a vertically mounted tricked drum above the thread guides, and bits in the tricks of said vertically mounted drum to actuate the thread guides, said bits being controlled by said intermediate selectors.
15. For a knitting machine, the combination of a thread-guide shogging device, jacquard selecting means comprising a perforated jacquard-card and movable selectors controlled thereby, and an
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160122914A1 (en) * 2013-06-21 2016-05-05 Santoni S.P.A. Thread dispensing element for a thread guide for knitting machines, and thread guide comprising the dispensing element

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160122914A1 (en) * 2013-06-21 2016-05-05 Santoni S.P.A. Thread dispensing element for a thread guide for knitting machines, and thread guide comprising the dispensing element

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