US1200985A - Knitting-machine. - Google Patents

Description

F. c. BEHM. KNITTING MACHINE.

APPUCATON HLED AUGH, I915- l,2@0.985. Patented Oct. 10,1916.

3 SHEETSSHEET I.

maea'm 6.

F. C- REHM.

KNITTING MACHINE. APPLICATH)" FILED AUG. H; 1915. 1,200,985. Patented 0ct.10,1916.

3 SHEETS-SHEET 2- Svwudoz:

FrederickCRehn F. C. EEHM.

KNITTING MACHINE.

APPLICATION FILED AUG-11,1915.

Patented Oct. 10,1916.

3 SHEETS-SHEET 3 FEEDEBICK o. mania, or nn'rnorr, MICHIGAN,

ASSIGNOR TO CHICAGO HOSIERY (10.,

DETROIT, MICHIGAN. A.,CQBPOBATION OF MICHIGAN.

KNITTING-MACHINE.

To all whom it may concern -Be'it known that I, FREDERICK C. RnHM, acitizenof the United States, residing at 'Detroit, in the. county of Wayne and State of Michigan, have invented certain newand useful Improvements in Knitting-Machines,

of which the following is a specification.

whereby two separate My invention relates to improvements in knitting machines adapted to produce a knitted web having loops extending from one face thereof, of the class disclosed in my revious Patents Nos. 535,461; 619,840 and 839,200 to which reference may be had.

The object of my present invention is to provide a novel, simple and efficient means threads may be controlled and fed to the needles and the loopforming devices in such a manner as to cause the needles to act upon both threads at certainv intervals and to act upon but one of the threads at certain other intervals, the needles producing a plain knitted web having 1 no loose loops extending therefrom when the upon both threads.

- the plain web needles act upon but one of the threads, and the needles acting in conjunctionwith the loop-forming devices and producing a knitted web having the loose loops extending from one face thereof when the needles act Accordingly, my invention includes a thread delivery member movable into and from an operative position and controlling the thread which produces the said loose loops, the loop-forming thread beingdirected to the needles and the loop-forming dechine consists of the'elements and the ombinations of them hereinafter fully described and claimed.

In the accompanying drawings, illustrating my invention, Figure 1 is a side elevation of. a knitting machine'ombodying my invention. Fig. 2 is a sectional detail showing the wheel for controlling the loop-foun- I Specification of Letters Patent.

.the line 5-5 of Fig.

ing thread and adjuncts. Fig. 3 is a sectlonal detail showing a part of the pawl and ratchet mechanism. Fig. 4 is a plan view of the machine. Fig. 5 is a detail, as seen from feeding devices and adjuncts.

Fig. 6 is a vertical section through the machine.

Fig.

Patented Oct. 10, 1916. Application filed August 11, 1915. Serial No. 44,853. I

4, showing the thread I 7 is a sectional detail showing the member for delivering the loop-forming thread to the needles, the member being shownin the operative position by full lines and in the inoperative position by dot-and-dash lines.

Referring to the drawings, the machine comprises a lower plate 2 an upper plate 3, supporting'legs '1 for the lower plate 2, and a housing 6 rising from the lower plate 2 and supporting the upper plate 3.

Supported by is a shaft 7 carrying a driving which is connectedto agear wheel 9 on the shaft 7. The gear wheel 9 is in mesh with a gear wheel 10 which rotates on a shaftll which turns in the hereinafter referred to, which is adapted to be engaged by a clutch collar 14 splined on the, shaft 11, whereby when the collar 14 is engaged with the gear wheel 13, and power is applied to the pulley 8, the shaft 11 will be rotated. The shaft 11 carries a bevel gear wheel 15 coacting with a similar wheel 16 which is mounted to rot-ate horizontally in the plate 3.

The gear wheel 16 carries the needle cylinder 17 having the circular set of knitting needles 18 arranged to slide vertically operated by the knitting cams 19 which are a bearing on the housing 6, pulley 8' the frame of housing 6. vThe hub 12 of the gear wheel 11 carries a gear wheel 13,

therein. The needles 18 are adapted to be fixed on the plate 3, whereby, when the.

needle cylinder 17 is rotated by the mechanism previously reciprocate the needles 18 to effect the knitting operation, in the usual well known manner.

Fixed on the needle cylinder 17 is a ring 20 carrying the usual radially-movable web holders 21 which are actuated in, the usual described, the cams 19 will.

manner by the cams of a cam ring 22 which is supported on the ring 20 and is prevented from being rotated therewith by a "pr-st 23 rising. from the fixed plate 3 and to which the cam ring 22 is connected.

The post 23 carries an arm 24 which supports a ring 25. The ring 25 surrounds the upper portion of the set of needles 18 and forms a latch guard'therefor and is pro-f vided with a thread delivery, eye 26 directly above the knitting cams 19 by means of which a thread may be fed to the needles 18 to be acted upon thereby 'in the usual I manner during the knitting operation.

The construction and operation ofthe parts thus far described arecommon and well known and no detailed description or illustration thereof is deemed necessary herein. 1 Y I:

Secured on the ring 20 is a ring 28 having radial slots formed therein in which a circular set of loop forming devices 29 are mounted to slide radially between the needles 18. The devices 29 are provided with upwardly projecting butts which enter a camway 31 formed in a ring 32 which is supported on the ring 28. and which is pre vented from-rotating with the ring by the post 23 to which the ring;32.is connected.

The contour of the camway 31 is s31ch that,- during the rotation of the needle cylinder" 17 and therewith the ring 32, the devices 29 are maintained nonnallywithdrawn from .between the needles 18, and are projected inwardly between the needles where the needles are lowered to form the stitches, and are withdrawn from between the needles immediately followingthe raising-of the needles after the formation of the stitches. It will therefore be understood that when a thread 33 is fed to the needles 18 above the eye 26 ,and above the devices i v 29, as shown in Fig. 5, both threads 27 and 33 will be knitted into the fabric and that the thread 33 will be drawn down between the devices- 29 and into the fabric and thus produce the loopsi34 on the inner face of the tubular knitted fabric; and it will also be understood that after the stitches have been formed and the needles 18 have been raised to the normal level, the devices 29 will'be withdrawn from between the needles 18 to discharge the loops, after.

the formation thereof, during the knitting of each course of stitches.

The camway 31 is substantially the same as the camway 18 shown in my previous Patent No. 839,200, and the operation of.

the devices 29 with respect to the needles 18 is substantially the same as the parts #5 and 16, respectively, shown in my Patent No. 839,200, excepting that in the present case the set of devices 29 and the needle cyl inder 17 rotate and are operated by fixed cams, whereas, in the previous case, the loop forming devices and the needle cylinder do not rotate and are operated by rotating cams, the difierence being a reversal of the parts. a

The loop forming thread 33 is fed to the needles '18-through a tubular thread delivery member 34' secured to the inner end of an arm! 35 which is pivoted, at 36, to a bracket 37 secured on the stationary cam ring 32. This arm 35 and therewith the threaddelivery member 34 are movable on the pivot 36 from an operative position, shown by full lines in Fig. 7, to an inoperative position shown by dot-and-dash lines in Fig. 7. When the member 34 is in the operative position shown in Figs. 5 and 7, the thread '33 fed to the needles 18 between the hooks thereof and the tops of the devices 29, as

clearly shown in Fig. 5, and the loose loops arePproduced on the inner face of the tubular fabric as previouslyexplained. When, however, the arm 35 and therewith the thread 33 isprevented from reaching the needles 18 between their hooks and the de 40 when the member 34 is lowered to the" operative position, and the thread 33 entering the wide upper portion 39 when the member 34 is raised to the, inoperative position. The narrow portion 40 of the slot 38 insures the proper delivery of the thread 33 to the needles 18 when the member 34 is in the operativeposition; and. the wide portion 39' of the slot 38 gives free play to the thread 33 and prevents any liability of 'it being caught by the needlehooks and knitted into the fabric when the member 34 is in the inoperative position.

I shall now" describe the means to automatically lower and raise the arm 35 and the thread, delivery member 34 into and from the operative position at certain predetermined intervals during the operation of the machine Mounted toturn on a shaft member-34 are in the inoperative or dot-' and-dash line position, shown in Fig. 7, the

supported in the housing 6 is a gearfivheel 41 which is actuated. by the gear wheel 13 hereinbefore referred to. The gear wheel 41 is connected by a link 42 to a member 43 whichis mounted to reckon a shaft 44 in the housing 6, whereby, during the rotation of the gear wheel 41, the member 43 will be rocked. The member 43 carries a pivotstud '45 having a pawl 46 pivoted thereon adapted to engage a ratchetwheel47 whic is mounted to turn on a shaft. 48 rotatably ,fitted in bearings in the housin -6. ."Loosely mountwheel 47 and secured thereto is'a'sprocket wheel 49 which carries a pattern chain 50.

.ed on the shaft 48 ad acent to 'thfiiratchet at certain predetermined intervals.

chain 50 at all times.

Therocking member 43 is always actuated during the operation of the machine and the pawl l6 is constantly in motion and in operative relation to the sprocket wheel 47 for ratchet wheel 51 is adapted to be actuated by a pawl 52 which is pivoted on the stud 45-ofthe rocking member 43. The pawl 52- has a lateral projection 53 which rests normally on the arm 5% of a lever 55 which is? fulcrumed, at 56, in the housing 6. The lever 55 has an arm-57 provided with :1 lateral projection 58 which extends over the patternchain 50, and the lever 55 has an 1 arm 59 which is connected to one end of a spring 60. The other end of the spring 60 is connected to the housing 6, and the spring 60 acts upon the lever 55 to maintain its .projection58 down upon the pattern chain 50.

.- The pattern chain 50 is provided with certain high links 61 which, when they pass under the projection 58 of the arm 57 of the lever 55,.raise the arm 57 and lower the arm .5 tsu'pporting the pawl 52. When a lowered so that the pawl will engage a tooth off the ratchet wheel 51 and advance the the pawl will be prevented from actuating" the ratchet wheel 51. It will thus be seen that theshaft 48 remains 'idle 'and is slightly tiir'ned" at certain predeter mined intervals, controlled by the pattern chain 50. The shaft 418 has a wheel 62 secured thereto which is provided with anotch or depression (53; and resting upon the wheel (32 is the downwardly-turned end of an arm 64 which is pivoted, at 65, in the housing 6. The end of thearm-(i is adapted to .drop into the depression 63 when the'deprcssion is moved into registry with the-arm 64, and the arm 64 is adapted to be raised from the depression (33 when the wheel 62 is turned to move the depression 63 out of registry with the arm 64:. Pivoted to the arm 64 is the lower end' of a rod 66, the

upper end of which is pivoted,.at 67, to the outer end of the arm 35 which carries the thread delivery member 34:. Theparts are constructed and related to each other so- This the production of the heel and toe of the stockings.

delivery member 34: will be lowered to the operative position. It will therefore be understood that while the depression 63 is in registry with the arm 6%, the machine will produce a plain knitted web, and that while the depression .63 is out of registry with the arm 64, the machine will produce a knitted web having the loose loops extending therefrom, and it will also be under stood that the relativelengthsof the plain knitted web and the web having the loose L leg portions of the stockings, where the stockings are knitted in a continuous tube and afterward out, to present plain knitted fabric for the subsequent closing of the toe portions and the finishing of the ends of the leg portions of the stockings.

The rocking member 43 which actuates the pawls 4:6 and 52 has agear sector 68 .formed thereon which coacts with. a gear, high link 61 passes under the projection 53 the arm 54 and therewith the pawl 52 are wheel 69 which is loose on the shaft 11 for actuating the needle cylinder 17; and when the heel and toe portions of a stocking re knitted on the machine, the clutch col ar 14 is moved from engagement with the gear wheel 13 and into engagement with the gear wheel 69 thereby causing the sector 68,.and

gear wheel 69 to reciprocate the shaft 11 and needle cylinder 17 in the usual manner for portions I claim: 1 1. In a knitting machine, the combination of a set of needles, means opera'tiveto deliver two separate threads to said needles in a manner to cause saidneedles to act upon both threads and to act upra but one of them in alternate succession for the production of a knitted web, a set of loop forming devices adapted to produce loose loops of one of said threads extending from-one face of said knitted web. only when both threads are being acted upon by said needles, and means to actuate said needles and said devices for the production of said web and said loops.

2. In a knitting machine, the combination of a set of needles, means to automatically deliver two separate threads to said needles in a manner to cause said needles to act upon both threads and to act upon but one of them in alternate succession for the production of a knitted web, a set of loop forming devices adapted to produce loose loops of one of said threads extending from one face of said knitted web,- only when both threads are 0 being acted upon by said needles, and means to actuate said needles and said devices for the production of said web and said loops. f 3. In a knitting machine, the combination of a set of needles, aset of loop forming devices, ath'read delivery part-arranged to deliver thread to said needles to be acted upon thereby independently of said devices for the production of a plain knitted web, a thread delivery member movable into and from an operative position and adapted to deliver thread to said needles and said devices to be acted upon thereby for the production of looseloops extendin from one face of said knitted web, only w en said member is in its operative position, and means to actuate said needles and said devices'for the production of said web and said loops.

4. In a knitting machine, the combination of a set of needles, a set of loop forming devices, a thread delivery part arranged to de- 'liverthread' to said needles to be acted upon thereby independently of a plain knitted web, a thread delivery member movable into and from an operative position and adapted to deliver thread to said needles and said devices tobe acted upon thereby for the production of loose loops extending from one liver thread to said needles to be acted upon thereby independently of said devices for the production of a plain knitted web, a thread delivery member movable into and from an operative position and adapted to deliver thread to said needles and said devices to be acted upon thereby for the production ofv loose loops-extending from one face of.

said knitted web, only when said member is in its 0 erative position, means to actuate said nee les and said devices for the production of said web and said loops, a cam actuated by said means, and means operated by said cam for moving said member.

6. In a knitting machine, the combination of a set of needles, a set of loop forming devices, a thread delivery part arranged to deliver thread to said needles to be acted upon thereby independently of said devices for v -'the production of a plain knitted web, a

thread delivery membe movable into and from an operative position and adapted to deliver thread to said needles and said devices to be acted upon thereby for the production of loose loops extending from one face of said knitted Web, only when said member is inits operative position, means to actuate said needles and said devices for the production of said web and said loops, a cam, a pawl-and-ratchet mechanism actuated by said means and actuatin said cam, and means operated by said cam %or moving said member.

7. In a knitting machine, the combination of a set of needles, a needle-latch guard adjacent to said needles and having a slot therein, a thread delivery part arranged to deliver thread to said needles to be acted upon thereby independently of saiddevices for the production of a plain knitted Web, a thread delivery member movable into and from an operative position and adaptedto deliver thread to said needles and said devices to be acted upon thereb for the production of loose loops exten ing from one face of said knitted web, only when said member is in its operative position, the Wall of said slot coiiperating with said member in delivering thread to said needles and said devices, and means to actuate said needles and said devices for the production of said Web and said loops, H

In testimony whereof Iaiiixfmysignature hereto.

FREDERICK C. REHMQ

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