US2960854A - Knitting machine - Google Patents

Knitting machine Download PDF

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US2960854A
US2960854A US647611A US64761157A US2960854A US 2960854 A US2960854 A US 2960854A US 647611 A US647611 A US 647611A US 64761157 A US64761157 A US 64761157A US 2960854 A US2960854 A US 2960854A
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sinker
needle
sinkers
needles
carriage
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Eberl Franz
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    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04BKNITTING
    • D04B7/00Flat-bed knitting machines with independently-movable needles
    • D04B7/04Flat-bed knitting machines with independently-movable needles with two sets of needles
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04BKNITTING
    • D04B15/00Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
    • D04B15/06Sinkers

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  • This invention relates to a knitting machine comprising at least one needle bed with a row of parallel latch needles, a cam box or carriage movable on the needle bed transversely to the direction of movement of said latch needles and having cams for engaging the butt ends of said needles so as to lower and lift the latch needles, and a cam for operating the sinkers which are adjustable between the latch needles and formed with a threadengaging surface for the formation of loops.
  • the length of stitch can be adjusted within a range whose upper limit is determined by the distance between a sinker edge, which, being guided along an arc of a circle, remains in a substantially unchanged effective position relative to the needle movement, and the hook of the latch needle in its lowest position, which is determined by the largest angle which can be included by the lowering portions of the needle cams in the carriage.
  • the width of the loop can be varied by means of double-lever sinkers which are pivoted on a stationary axis and arranged between the latch needles and movable in the same sense as the latter, the swing of which double levers can be adjusted to limit the width of stitch from a predetermined maximum down to smaller widths, the width decreasing with an increase of the swing permitted to the thread-engaging surface of the double lever.
  • sinkers or double levers which are pivoted on an axis are provided and the threadengaging surface of the sinker, which limits the width of the loop, is moved substantially in the same direction as the lowering latch needle.
  • a sinker-lifting cam which is mounted on the carriage and adapted to move the sinkers in such a direction as to increase the distance of the thread-engaging surface or edge of each sinker from the hook end of the adjacent latch needles when the latter are moved in the direction toward their butt ends, in order to increase the length of stitch.
  • the sinkers of the two needle beds coacting to produce knitted goods having a ribbed pattern, have a laterally extending tip disposed above their thread-engaging surface.
  • the tips of the sinkers of both needle beds point preferably in the same direction to avoid a clashing of the tips of adjacent sinkers.
  • Fig. 1 is a perspective view showing a portion of a knitting machine according to the invention having one needle bed;
  • Fig. 2 is a cross-sectional view of a portion of said needle bed
  • Figs. 3 and 4 are front and side elevations, respectively, of a sinker
  • Fig. 5 is a fragmentary elevational view showing the movement of the sinkers and latch needles
  • Fig. 6 is a sectional view taken on line VI--VI of Fig. 5;
  • Fig. 7 is a perspective view of the sinker-lifting cam mounted on the carriage for controlling the sinker movement
  • Figs. 8 and 9 are diagrammatic cross-sectional and top plan views of two interconnected needle beds forming part of a modified machine according to the invention and of the associated carriages;
  • Fig. 10 is a top plan view of one carriage and of the sinker-lifting cam movably mounted thereon;
  • Fig. 11 is a sectional view taken on line XIXI of Fig. 7.
  • the knitting machine shown in Figs. 1 to 7 has a needle bed 1, which is constructed in the usual manner and in the grooves of which the parallel latch needles 2 are guided.
  • the front end of the needle bed 1 adjoins a sinker bed 3 (Fig. 2) in which the sinkers 4 are guided so that they can be lifted and lowered in a vertical plane.
  • Each sinker is disposed between two adjacent latch needles.
  • the plane in which the latch needles 2 are moved is called the latch-needle plane. In the illustrated embodiment that plane extends at an angle of 45 relative to the vertical plane in which the sinkers are movable.
  • a sinker 4 is shown in detail in Figs. 3 and 4. It consists of a substantially flat stamping, the lower portion of which is formed with parallel end faces 5 guided in the sinker bed 3.
  • the sinker is formed with a slot 6 which extends parallel to these end faces 5 and receives a stationary rod 7 carried by the needle bed (Fig. 2). This slot 6 enables the movement of the sinker.
  • the upper portion of the sinker has at its front side a reentrant thread-engaging edge 8 which extends at right angles to the direction of movement of the latch needles 2.
  • the rear side of the sinker is formed with a horizontal guide face 9 engageable by the sinker-lifting cam for controlling the movement of the sinkers.
  • the inoperative posit-ion of the sinkers is shown in Fig. 2; in that position a stop 1% disposed on the front side of the sinker engages the upper edge of a rail 25 of the base 14 of the needle bed.
  • a small coil spring 12 is hung in a bore 11 formed in the lower end of the sinker and is afiixed at its other end to an angled abutment 13 of the base 14. That spring tends to pull the sinker down.
  • a hooked extension 15 formed on the sinker above the thread-engaging edge 8 of the sinker terminates in a laterally extending tip 16.
  • the sinkers are operated with the aid of a carriage (designated 32 in Figs. 8 and 9), which moves over the needle bed transversely to the direction of the latch needles and carries a specially shaped sinker-lifting cam 21.
  • the carriage may be designed in the usual manner, comprising a central needle-lowering cam, not shown, which delimits the distance by which the needles are lowered and preferably enables an adjustment of said distance, moreover a pair of needle-lifting cams, likewise not shown, and a pair of stationary auxiliary lowering cams, illustrated at 41 in Fig. 10.
  • the carriage may also be provided with a pivoted thread guide for inserting the thread (not shown).
  • the top plate '19 of the carriage is guided in the usual manner by rails 20 located on the needle bed 1.
  • the top plate 19 carries the sinker-lifting cam 21, the front edge of which engages the guide faces 9 of the sinkers from below.
  • This front edge is shaped symmetrically with respect to the center of the cam and is substantially V-shaped. It rises at 22 and extends along a straight line parallel to the latchneedle plane at 23 and then in the form of a curved elevation 24 in the central portion (Fig. 7).
  • Fig. 7 In the righthand half of Fig. 7 there is shown how the sinkers are successively lifted as their guide faces 9 run up on the front edge of the sinker-lifting cam 21.
  • the figure shows sinkers a and b in their inoperative position, sinkers c and d in a partly lifted position and sinker e in its completely lifted position. It is apparent that all sinkers will perform this two-stage lifting and lowering movement while the carriage is moved across the latch needles.
  • a is the distance traveled by the latch needle 2 from its position indicated in broken lines to its lowermost position during the formation of a thread loop
  • I is the distance traveled by the thread-engaging surface 3 of the sinker from the position shown in broken lines to the completely lifted position.
  • the positions of the latch needle and the sinker shown in broken lines are the positions assumed by these parts at the instant when the looping of the thread begins whereas the entirely lowered latch needle and the completely lifted sinker are shown in solid lines. Particularly from Fig.
  • a set of sinker-lifting cams adapted to be selectively aiiixed on a the top plate of a carriage, in order to enable an even larger variation in the length of the stitch.
  • the eleva tion 2 in the central portion of the sinker cam could also be formed by vertically adjustable cam portions in order to enable a continuous adjustment of the distance 11 within a certain range.
  • Fig. 1 shows diagrammatically the formation of a row of stitches in the knitting machine according to the invention; it does not appear necessary to describe the several stages of forming the stitch, which are sufficiently well known. To facilitate the understanding, two complete rows of stitches have been indicated in Fig. 1 whereas a third one, which is being formed by a movement of the carriage (not shown) to the right, gives a clear showing of' these several stages.
  • FIGs. 8 and 9 A knitting machine having a double bed is shown in Figs. 8 and 9; similar parts being designated with the same reference characters as in Figs. 1 to 7.
  • Such a machine can be obtained by connecting two of the needle beds described hereiribefore so that the latch needles are disposed at right angles to each other.
  • detachable connection of the two needle beds may be provided by a bail 31, whichextends over and across the 4 bases 14 of the two needle beds and can be located therein (Fig. 8).
  • FIGs. 8 and 9 show also for each of the two beds an associated carriage 32, which carries a sinker-lifting cam 21.
  • the carriages are also connected by a bail (not shown) to ensure that they will be jointly displaced.
  • a rigid central thread guide is provided.
  • the two needle beds may be coordinated as shown in Fig. 9, where each latch needle of one bed lies exactly opposite to a latch needle of the other bed. In that case only one of two mutually opposite needles is used for knitting.
  • the coordination could also be such that the latch needles of one needle bed are offset by half a needle pitch from those of the other; in that case all needles of both needle beds may be used with half the needle pitch.
  • the laterally extending tips 16 of the sinkers become effective when the two needle beds are assembled and during the subsequent operation of the machine.
  • the arrangement of the non-working and working latch needles for making a ribbed pattern (knit two, purl two) is shown. Pairs of adjacent needles of one bed as well as the next two needles of the other bed are efifective whereas the needles opposite these needle pairs are not used for knitting.
  • the sinker-lifting cam 21 of each carriage must be displaceable in the direction of movement of the carriage.
  • the arrangement may be such that the central elevation 24 of the sinker-lifting cam lies substantially over the center of the needle-lowering cams 41 during the reciprocation of the carriage (Fig. 10).
  • the sinkerlifting cam is slidably carried on a slide rail 61, which is afiixed to the top plate of the carriage and embraced by a double-angled bail 62 of the sinker-lifting cam.
  • the sinker-lifting cam could also be mounted onthe carriage for pivotal movement on a fixed axis.
  • a knitting machine comprising a needle bed, a row of parallel latch needles each provided with a hook end at the top and a butt end at the bottom and guided in said needle bed for longitudinal reciprocating movement in an inclined plane, a carriage movable over said needle bed in a generally horizontal direction, said carriage being provided with cam means adapted to engage said butt ends of said needles in a manner causing the same successively to reciprocate as said carriage moves over said needle bed, a row of sinkers each provided with a camengaging edge and movably arranged between two adjacent ones of said needles and guided for linear reciproeating movement in a substantially vertical plane, each of said sinkers having a thread-engaging forward edge extending generally perpendicularly to said latch needles for holding a thread pulled by said hook ends of said adjacent needles as they are moved in the direction towards said butt ends whereby loops are formed, and a sinker cam carried by said carriage for successive movement below the camengaging edges of all of said sinkers to reciprocate said sinkers substantially simultaneously with the movement
  • each of said sinkers is formed With a substantially vertical slot, said needle bed carrying a substantially horizontal rod extending through said slots.
  • a knitting machine comprising two needle beds angularly arranged opposite each other, two rows of longitudinally movable parallel latch needles each having a butt end and a hook end, said two rows of latch needles defining substantially right angles with each other, each of said rows being arranged in one of said needle beds, two carriages each movable over one of said beds trans versely to the direction of movement of said needles, needle cams carried by each of said carriages and adapted to engage said butt ends for successively reciprocating said needles as said carriages move over said beds, and two rows of sinkers arranged substantially parallel to each other for activation of a respective row of needles, each sinker being movably arranged between two adjacent needles of the respective row and guided for a reciprocating movement in a plane enclosing an acute angle with said reciprocating latch needles, each sinker having a thread-engaging edge adapted to hold a thread pulled by said hook end of one of said adjacent needles as they are moved in the direction towards said butt ends whereby loops are formed

Description

3 Sheets-Sheet 1 F. EBERL KNITTING MACHINE FIG. 70
INVENTOR FRANZ EBEPL P M f M W was XI i Nov. 22, .1960
Filed March 21, 1957 Nov. 22, 1960 F. EBERL KNITTING MACHINE Filed March 21, 19 57 3 Sheets-Sheet 2 INVENTOR F RA NZ EBEPL,
Nov. 22, 1960 F. EBERL 2,960,854
KNITTING MACHINE Filed March 21, 1957 s Sheets-Sheet s INVENTOR FRA NZ [BE/Q1. lr
United States Patent KNITTING MACHINE Franz Eberl, Keramikstrasse 4, Gmunden, Upper Austria, Austria Filed Mar. 21, 1957, Ser. No. 647,611
Claims priority, application Austria Mar. 26, 1956 6 Claims. (Cl. 66-71) This invention relates to a knitting machine comprising at least one needle bed with a row of parallel latch needles, a cam box or carriage movable on the needle bed transversely to the direction of movement of said latch needles and having cams for engaging the butt ends of said needles so as to lower and lift the latch needles, and a cam for operating the sinkers which are adjustable between the latch needles and formed with a threadengaging surface for the formation of loops.
In a known machine of that kind the length of stitch can be adjusted Within a range whose upper limit is determined by the distance between a sinker edge, which, being guided along an arc of a circle, remains in a substantially unchanged effective position relative to the needle movement, and the hook of the latch needle in its lowest position, which is determined by the largest angle which can be included by the lowering portions of the needle cams in the carriage.
In another known knitting machine the width of the loop can be varied by means of double-lever sinkers which are pivoted on a stationary axis and arranged between the latch needles and movable in the same sense as the latter, the swing of which double levers can be adjusted to limit the width of stitch from a predetermined maximum down to smaller widths, the width decreasing with an increase of the swing permitted to the thread-engaging surface of the double lever. In these known machines, therefore, sinkers or double levers which are pivoted on an axis are provided and the threadengaging surface of the sinker, which limits the width of the loop, is moved substantially in the same direction as the lowering latch needle. Finally it has also been proposed to assemble the needle beds of knitting machines in any desired relation to each other.
It is an object of the invention to enable an increase in the length of the stitch beyond the limit provided in the known machines and thus to enable the making of knitwear having stitch sizes varying within wide ranges.
It is furthermore an object of the invention to provide a knitting machine for producing knitting in which plain and reversed stitches succeed each other in any desired number without requiring the hitherto customary weighted pull-down combs, which are complicated in operation.
According to the invention the above objects are achieved by a sinker-lifting cam which is mounted on the carriage and adapted to move the sinkers in such a direction as to increase the distance of the thread-engaging surface or edge of each sinker from the hook end of the adjacent latch needles when the latter are moved in the direction toward their butt ends, in order to increase the length of stitch.
According to another feature of the invention, applicable to two-bed knitting machines, the sinkers of the two needle beds, coacting to produce knitted goods having a ribbed pattern, have a laterally extending tip disposed above their thread-engaging surface. The tips of the sinkers of both needle beds point preferably in the same direction to avoid a clashing of the tips of adjacent sinkers.
Further features and advantages of the invention will become apparent from the description and the accompanying drawing, which shows two illustrative embodiments of the invention.
Fig. 1 is a perspective view showing a portion of a knitting machine according to the invention having one needle bed;
Fig. 2 is a cross-sectional view of a portion of said needle bed;
Figs. 3 and 4 are front and side elevations, respectively, of a sinker;
Fig. 5 is a fragmentary elevational view showing the movement of the sinkers and latch needles;
Fig. 6 is a sectional view taken on line VI--VI of Fig. 5;
Fig. 7 is a perspective view of the sinker-lifting cam mounted on the carriage for controlling the sinker movement;
Figs. 8 and 9 are diagrammatic cross-sectional and top plan views of two interconnected needle beds forming part of a modified machine according to the invention and of the associated carriages;
Fig. 10 is a top plan view of one carriage and of the sinker-lifting cam movably mounted thereon; and
Fig. 11 is a sectional view taken on line XIXI of Fig. 7.
The knitting machine shown in Figs. 1 to 7 has a needle bed 1, which is constructed in the usual manner and in the grooves of which the parallel latch needles 2 are guided. The front end of the needle bed 1 adjoins a sinker bed 3 (Fig. 2) in which the sinkers 4 are guided so that they can be lifted and lowered in a vertical plane. Each sinker is disposed between two adjacent latch needles. The plane in which the latch needles 2 are moved is called the latch-needle plane. In the illustrated embodiment that plane extends at an angle of 45 relative to the vertical plane in which the sinkers are movable.
A sinker 4 is shown in detail in Figs. 3 and 4. It consists of a substantially flat stamping, the lower portion of which is formed with parallel end faces 5 guided in the sinker bed 3. The sinker is formed with a slot 6 which extends parallel to these end faces 5 and receives a stationary rod 7 carried by the needle bed (Fig. 2). This slot 6 enables the movement of the sinker. The upper portion of the sinker has at its front side a reentrant thread-engaging edge 8 which extends at right angles to the direction of movement of the latch needles 2. The rear side of the sinker is formed with a horizontal guide face 9 engageable by the sinker-lifting cam for controlling the movement of the sinkers.
The inoperative posit-ion of the sinkers is shown in Fig. 2; in that position a stop 1% disposed on the front side of the sinker engages the upper edge of a rail 25 of the base 14 of the needle bed. A small coil spring 12 is hung in a bore 11 formed in the lower end of the sinker and is afiixed at its other end to an angled abutment 13 of the base 14. That spring tends to pull the sinker down. A hooked extension 15 formed on the sinker above the thread-engaging edge 8 of the sinker terminates in a laterally extending tip 16.
The sinkers are operated with the aid of a carriage (designated 32 in Figs. 8 and 9), which moves over the needle bed transversely to the direction of the latch needles and carries a specially shaped sinker-lifting cam 21. The carriage may be designed in the usual manner, comprising a central needle-lowering cam, not shown, which delimits the distance by which the needles are lowered and preferably enables an adjustment of said distance, moreover a pair of needle-lifting cams, likewise not shown, and a pair of stationary auxiliary lowering cams, illustrated at 41 in Fig. 10. The carriage may also be provided with a pivoted thread guide for inserting the thread (not shown).
As is shown in Figs. 2 and 8, the top plate '19 of the carriage is guided in the usual manner by rails 20 located on the needle bed 1. The top plate 19 carries the sinker-lifting cam 21, the front edge of which engages the guide faces 9 of the sinkers from below. This front edge is shaped symmetrically with respect to the center of the cam and is substantially V-shaped. It rises at 22 and extends along a straight line parallel to the latchneedle plane at 23 and then in the form of a curved elevation 24 in the central portion (Fig. 7). In the righthand half of Fig. 7 there is shown how the sinkers are successively lifted as their guide faces 9 run up on the front edge of the sinker-lifting cam 21. The figure shows sinkers a and b in their inoperative position, sinkers c and d in a partly lifted position and sinker e in its completely lifted position. It is apparent that all sinkers will perform this two-stage lifting and lowering movement while the carriage is moved across the latch needles.
The advantage which is thus achievable is apparent from Figs. and 6. In Fig. 5, a is the distance traveled by the latch needle 2 from its position indicated in broken lines to its lowermost position during the formation of a thread loop; I) is the distance traveled by the thread-engaging surface 3 of the sinker from the position shown in broken lines to the completely lifted position. The positions of the latch needle and the sinker shown in broken lines are the positions assumed by these parts at the instant when the looping of the thread begins whereas the entirely lowered latch needle and the completely lifted sinker are shown in solid lines. Particularly from Fig. 6, which shows clearly the pulling of the thread by the latch needles and the formation of the loop which is of increased length according to the invention, it is clearly apparent that the movement of the thread-engaging surface 8 controlled by the sinker-lifting cam and performed simultaneously with the lowering of the latch needle to its lowermost position will enable a further increase in the length of the stitch beyond the limit achievable in known machines. This increase equals the distance b produced by the further lifting of the sinker. That distance can be determined by giving an appropriate shape to the sinker cam. Thus the length of the loop and of the stitch can be controlled in any desired range whereby knitwear can be produced having a density which is variable in a wide range.
It is obvious that there could be provided a set of sinker-lifting cams adapted to be selectively aiiixed on a the top plate of a carriage, in order to enable an even larger variation in the length of the stitch. The eleva tion 2 in the central portion of the sinker cam could also be formed by vertically adjustable cam portions in order to enable a continuous adjustment of the distance 11 within a certain range.
Fig. 1 shows diagrammatically the formation of a row of stitches in the knitting machine according to the invention; it does not appear necessary to describe the several stages of forming the stitch, which are sufficiently well known. To facilitate the understanding, two complete rows of stitches have been indicated in Fig. 1 whereas a third one, which is being formed by a movement of the carriage (not shown) to the right, gives a clear showing of' these several stages.
A knitting machine having a double bed is shown in Figs. 8 and 9; similar parts being designated with the same reference characters as in Figs. 1 to 7. Such a machine can be obtained by connecting two of the needle beds described hereiribefore so that the latch needles are disposed at right angles to each other. Advantageously, detachable connection of the two needle beds may be provided by a bail 31, whichextends over and across the 4 bases 14 of the two needle beds and can be located therein (Fig. 8).
In assembling the two needle beds together, care must be taken to see that the tips 16 of the sinkers 4 of each bed are on the same side and point in the same direction. Figs. 8 and 9 show also for each of the two beds an associated carriage 32, which carries a sinker-lifting cam 21. The carriages are also connected by a bail (not shown) to ensure that they will be jointly displaced. Preferably a rigid central thread guide is provided.
The two needle beds may be coordinated as shown in Fig. 9, where each latch needle of one bed lies exactly opposite to a latch needle of the other bed. In that case only one of two mutually opposite needles is used for knitting. The coordination could also be such that the latch needles of one needle bed are offset by half a needle pitch from those of the other; in that case all needles of both needle beds may be used with half the needle pitch.
As is apparent from Fig. 9, the laterally extending tips 16 of the sinkers become effective when the two needle beds are assembled and during the subsequent operation of the machine. In that figure the arrangement of the non-working and working latch needles for making a ribbed pattern (knit two, purl two) is shown. Pairs of adjacent needles of one bed as well as the next two needles of the other bed are efifective whereas the needles opposite these needle pairs are not used for knitting. It is apparent that the thread inserted from above is engaged by the lowering needles while the tips 16 of the sinkers engage the thread at all points where it passes over from a needle of one bed to the adjacent needle of the other bed, e.g., at 34, 35 and 36, and coact with the hooks 15 in pulling down the knitting during the lowering movement of the sinkers after the stitches have been formed.
Because'the sinkers must be completely lifted in the lowermost position of the needles the sinker-lifting cam 21 of each carriage must be displaceable in the direction of movement of the carriage. As is shown in the drawing, the arrangement may be such that the central elevation 24 of the sinker-lifting cam lies substantially over the center of the needle-lowering cams 41 during the reciprocation of the carriage (Fig. 10). The sinkerlifting cam is slidably carried on a slide rail 61, which is afiixed to the top plate of the carriage and embraced by a double-angled bail 62 of the sinker-lifting cam. Instead of being slidably arranged, the sinker-lifting cam could also be mounted onthe carriage for pivotal movement on a fixed axis.
During the movement of the carriage over the needle bed the sinker-lifting cam 21 will be automatically displaced by the pressure exerted thereon by the sinkers to one or the other of its end positions, which are determined by screws 63 at the beginning of the movement of the carriage. Thus the central elevation 24 of the sinker cam will be in the desired position opposite the lowering cam 41. V V V V The knitting machine according to the invention is not restricted to the embodiments shown and described by way of example inasmuch as many modifications are possible within the scope of the invention.
I claim: a
1. A knitting machine comprising a needle bed, a row of parallel latch needles each provided with a hook end at the top and a butt end at the bottom and guided in said needle bed for longitudinal reciprocating movement in an inclined plane, a carriage movable over said needle bed in a generally horizontal direction, said carriage being provided with cam means adapted to engage said butt ends of said needles in a manner causing the same successively to reciprocate as said carriage moves over said needle bed, a row of sinkers each provided with a camengaging edge and movably arranged between two adjacent ones of said needles and guided for linear reciproeating movement in a substantially vertical plane, each of said sinkers having a thread-engaging forward edge extending generally perpendicularly to said latch needles for holding a thread pulled by said hook ends of said adjacent needles as they are moved in the direction towards said butt ends whereby loops are formed, and a sinker cam carried by said carriage for successive movement below the camengaging edges of all of said sinkers to reciprocate said sinkers substantially simultaneously with the movement of said adjacent needles, upon movement of said carriage over said needle bed, said cam means and said sinker cam being relatively positioned to raise said sinkers upon a lowering of said needles and vice versa.
2. A knitting machine as set forth in claim 1 wherein each of said sinkers is formed With a substantially vertical slot, said needle bed carrying a substantially horizontal rod extending through said slots.
3. A knitting machine as set forth in claim 1 wherein said sinker cam is horizontally displaceable on said carriage between two limiting positions, said cam means including a pair of needle-lowering cams respectively aligned with said sinker cam in said two limiting positions.
4. A knitting machine as set forth in claim 3, further comprising a substantially horizontal slide rail engaged by said sinker cam and mounted on said carriage, and abutment means at said rail adapted to arrest said sinker cam in said limiting positions.
5. A knitting machine comprising two needle beds angularly arranged opposite each other, two rows of longitudinally movable parallel latch needles each having a butt end and a hook end, said two rows of latch needles defining substantially right angles with each other, each of said rows being arranged in one of said needle beds, two carriages each movable over one of said beds trans versely to the direction of movement of said needles, needle cams carried by each of said carriages and adapted to engage said butt ends for successively reciprocating said needles as said carriages move over said beds, and two rows of sinkers arranged substantially parallel to each other for activation of a respective row of needles, each sinker being movably arranged between two adjacent needles of the respective row and guided for a reciprocating movement in a plane enclosing an acute angle with said reciprocating latch needles, each sinker having a thread-engaging edge adapted to hold a thread pulled by said hook end of one of said adjacent needles as they are moved in the direction towards said butt ends whereby loops are formed, each of said sinkers being further formed above said thread-engaging edge with a laterally extending tip adapted to pull down said thread when the latter passes between alternate rows of latch needles.
6. A knitting machine as set forth in claim 5 wherein said sinkers of both of said rows have said laterally extending tip on the same side thereof whereby a clashing of the tips of adjacent sinkers is prevented.
References Cited in the file of this patent UNITED STATES PATENTS 2,762,213 Schurich Sept. 11, 1956 FOREIGN PATENTS 517,723 Belgium Mar. 14, 1953
US647611A 1951-05-29 1957-03-21 Knitting machine Expired - Lifetime US2960854A (en)

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US228926A US2626512A (en) 1951-05-29 1951-05-29 Sinker and method of loop transferring
AT2960854X 1956-03-26

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3326017A (en) * 1963-11-15 1967-06-20 Paliz A G Double-bed knitting apparatus
EP0238797A1 (en) * 1986-03-21 1987-09-30 H. Stoll GmbH & Co. Flat bed knitting machine provided with two needle beds and sinkers between the needles
EP0435690A2 (en) * 1989-12-28 1991-07-03 SHIMA SEIKI MFG., Ltd. Sinker mechanism for flat knitting machines
US5209083A (en) * 1990-02-07 1993-05-11 Shima Seiki Mfg., Ltd. Flat knitting machine having function for adjusting knock-over timing
US5355699A (en) * 1992-04-16 1994-10-18 Tsudakoma Kogyo Kabushiki Kaisha Flat knitting machine and a method of operating the rocking sinkers of the flat knitting machine
US5570592A (en) * 1994-11-16 1996-11-05 Tsudakoma Kogyo Kabushiki Kaisha Sinker actuating apparatus having spring force advancing member

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BE517723A (en) * 1952-09-04
US2762213A (en) * 1952-09-04 1956-09-11 Karl Steinhof Hand knitting appliance

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3326017A (en) * 1963-11-15 1967-06-20 Paliz A G Double-bed knitting apparatus
EP0238797A1 (en) * 1986-03-21 1987-09-30 H. Stoll GmbH & Co. Flat bed knitting machine provided with two needle beds and sinkers between the needles
EP0435690A2 (en) * 1989-12-28 1991-07-03 SHIMA SEIKI MFG., Ltd. Sinker mechanism for flat knitting machines
EP0435690A3 (en) * 1989-12-28 1992-03-18 Shima Seiki Mfg., Ltd. Sinker mechanism for flat knitting machines
US5209083A (en) * 1990-02-07 1993-05-11 Shima Seiki Mfg., Ltd. Flat knitting machine having function for adjusting knock-over timing
US5355699A (en) * 1992-04-16 1994-10-18 Tsudakoma Kogyo Kabushiki Kaisha Flat knitting machine and a method of operating the rocking sinkers of the flat knitting machine
US5570592A (en) * 1994-11-16 1996-11-05 Tsudakoma Kogyo Kabushiki Kaisha Sinker actuating apparatus having spring force advancing member

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Publication number Publication date
DE879145C (en) 1953-06-11
FR1065065A (en) 1954-05-20

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