US1194674A - Robert w - Google Patents

Description

R. w. scoTT. DEVICE FOR KNITTINGY 0N TRANSFERRED FABRIC SECTIONS.

- .APBLlcATloN FILED June 21. 1915. 6 74; Patented Aug. l5, 1916.

paran-r union.

'ROBERT W. SCOTT, 0F BOSTON, MASSACHUSETTS, ASSIGNOR TO SCOTT & WILLIAMS,

INCORPORATED, OF CAMDEN, NEW JERSEY, A CORPORATION OF NEW JERSEY.

DEVICE FOR KNITTING N TRANSFEBRED FABRIC SECTIONS.

Application tiled June 21, 1915.

T o all whom 'it may concern.'

Be it known that I, ROBERT W. SCOTT, a citizen of the United States, and resident i of Boston, in the county of Suffolk and Stat-e of hlassachusetts, have invented certainnew and useful Improvements in Devices for Knitting on Transferred Fabric Sections, of which the following is a specification.

My invention relates to automatic machines for knitting on transferred fabric sections. Such machines, having completed one article, are prepared to knit another by transferring by hand to their needles a previously knit fabric section. In my application Serial No. 807,535 tiled December 18, 1913, I have shown described and claimed mechanism .for automatically casting off the product and leveling the needles of such a machine, for then stopping it, and for adjusting the machine automatically t0 begin knitting upon again starting it. .In operation my said device still requires the operator to lift away from the needles. and to return to operative position at the needles certain. parts obstructing accessffor the transfer operation during the Aperiod of stoppage between operations.

One object of my present. invention is further to reduce the skill and time required of the operator and so .increase the product, by automatically moving away from the needles all obstructing parts at the end lof one cycle of operations, and returning them to operative position at the beginning of another cyrle, after the transfer has been made.

Another object is to'provide means for moving the guard device, yarn-feed implements, and other upper parts of a circular knitting machine into and out of position for operation automatically, said means providing for holding the guard-device and at-l tached parts in their inoperative position when desired.

In the accompanying drawing,the figure is a right-hand elevation, partly in vertical section, ofso much of a knitting machine provided with my devices as is necessary to Vshow the relation of the new parts to the machine improved.

A guard device, for instance such as the Specification of Letters Patent.

Patented Aug. 15, 1916.

serial No. 35,251.

latch guard ring 550 shown in the drawing, 1s provided with a lug or lugs 553 pivoted at 552 on a standard 401, said latch ring resting in a horizontal position on top of a standard -100 at the front of the machine, which standard may be grooved to receive a positioning gib 557 on the underside of a lug 556 forming a part ofthe latch ring. `rl`he said device when so positioned is in the usual operative relation to the heads of needles a 4in the needle-cylinder 260, and said latch-guard device may carry such parts of the instruments coperating with the needles may be desired to be placed near their heads, for instance the movable yarn-guides F, and a yarn severing mechanism 60S, such as shown-in my said application, and an internal needle presser 701, such as shown described and claimed in my application Serial No. 3,126 filed January 1e, 1915.

Actuation of. the devices mentioned is effected through a series of thrust-bars .46() guided in fixed combs 451, z162 having free endsin contact with the respective devices F, 701 and 608 when the device 550 is in the operative position Vshown in full lines. As fully set out in my said applications one of the bars 4160 may be provided with a lug 46 for withdrawing a segment 370 to level the needles. Actuation of bars i60 for these purposes is effected by cams on a drum 120 intermittently moved through one revolution during each cycle of operations. The

machine is provided with an automatic device for stopping (not shown), for instance .as set out in said application 807,535, which is timed to stop the machine when the line X of drum 120 shall have reached the series of bars 4.60. At this time the needles will have been freed of fabricl and leveled to receive a transfer device loaded with a previously knit fabric section.

A rigid stud 2 is fast in the latch-guard 550 and eccentric to its pivot 552, said stud taking into a hole in the upper end of a bent thrust-bar 4 guided in comb 451 so that the lower end of bar 4L rests near the surface of drum 120when the latch-guard is in operative,position. A cam 5 is fastened on drum 120 so that awhigh part thereof is under bar a when the Amachine stops, the leading end oi. cam 5 actingl on d, after the yarn has been 'withdrawn and severed to cast olii' the completed article, to rotate stud 2 and with it the latch-guard and its devices about pivot 552 as a .center until the bottom of lthe latch guard is at line Y, and the needles are freely accessible. A strong spring G extends between av stud T fast in the latch ring and. a bolt passed through a hole in a bracket 9 and adjustably held by ani-nuts 10.

lWhen cam 5 acts on bar il, latch-guard 550 not lifted so far as to carry stud 7 )ast the center with respect to the line of action of spring 6, and, the transfer having been made, further movement of drum 120 permits spring G to restore the devices which have been lifted out of the way to their operative positions. rlhis takes place simultaneously with or previous to the operation oi' devices F, 370 and IZ01 to begin knitting, as a first result of starting the machine.

l prefer to arrange the cams on drum 120 as shown so 'that cam 121 controlling the yarn-guide F for use at the beginning of the next stocking and cam 503 controlling the segment 870 through lug t6 run from under their thri'ist-bars just prior to the return of guard -550 to operative position. A yarn guide F will therefore be in an operative position when it returns with the latch-ring, and the yarn positioned between its end and the yarn severing and clamp device (50S will be entered between the moving needles by the motion oi guard 550. Cam 520 for moving the needle presser device 701 of my said application Serial No. 3,126 acts immediately following this time, prior 'to the motion of the Vfirst needle to knit, to cause it to take the yarn. The said arrangement avoids necessity iior accurately positioning the following end ci the cam 121, and provides aA yarn to begin knitting stretched between the clamp device and a yarn-guide, to insure its passage between the needles. i

i lvl/'hen it is desired at. any time in the operation, or when the machine parts are in any position, the latch-guard .may be manually lifted for access to the needles, the bar el beingy free to rise with it. lf lifted so far, for instance to bring its bottom to line Z, as to carry stud 7 past the center 552, the stress of spring 6 then serves to hold the lifted parts in their upper position.

lYhile I have described my device in connection. with a latch-needle machine, it will be understood that machines employing other types ot needles are provided with overhead devices equivalent vfor the pur poses ot' my present invention to the guard 550 and its attachments and that other known devices for casting ot the fabric than means for remoying or severing' the yarn may be employed, and that my' invention is applicable without change to .use in such machines or with such devices.

TWhat I claim is:

l. A knitting machine having in combination needles, a guard device therefor, a utomatie stopping mechanism, and means for automatically moving the guard device away from the needles prior to stoppage to permit accessto the needles, and for auto-- matically.returning said device after starting the machine.

2. A knitting machine having needh leveling devices, and means for casting otl' the fabric and stopping the operation of the machine after casting off and after leveling, and also having a needle guard device in combination with antomaticmeans for rcmoving said guard device from the neighborhood of the needles priorto stoppage, and for returning said guard deviceto operative position during subsequent operation of the machine.

3. A knitting machine havin@ in combination needles, a guard device, a movable yarnfeed guide on said device, automatic stopping mechanism, and automatic means for moving the guard device away from the needles, for positioning the yarn-guide operatively, and 'torreturning the guard device and positioned yarnfguide to operative relaF tion with 4the needles when the machine is again started. y

4. A knitting machine having in combination a needle guard ring, a spring holding said needle guard ring in position for normal operation, a pattern surface, and a connection from said surface for positively moving saidl needle guard ring out of its normal. position against. the stress of said spring at 1nedetermined times, said connection permitting manual movement o1 said guardV ring. A

A knitting machine having a needle guard device pivoted on fixed part of the machine, a thrust-bar takingagainst a. part of said 'needle guard device eccentric .to said pi'ot, and n'ieans acting on said thrust-bar to rotate said device about its pivot.

o. A knitting machine having' in combination a pivoted latch ring, a spring reacting between a fined part and, a part of said latch ring eccentric to its pivot, a bar, and means for moving said bar to swing said latch ring about its pivot through an angle on one side of a line joining said latch ring pivot and said fixed part whereby said latch ring is automatically elevated and .re-turned, the ar rangement' permitting manual elevation to hold the latch ring in an upperfeposition against the stress of said spring.

In testimony whereof, I have signed my vname to this specitlcation.

RGBERT W. SCOTT.

tientas all intent may te attained'. for ava centi; each, by addressing* the Uommissioner of Patente. 'Waahtuztana` of."

Images