US1203132A

US1203132A - Plating attachment for circular-knitting machines.

Info

Publication number: US1203132A
Application number: US8714916A
Authority: US
Inventors: Frank W Robinson
Original assignee: Nolde & Horst Co
Current assignee: Nolde & Horst Co
Priority date: 1916-03-28
Filing date: 1916-03-28
Publication date: 1916-10-31
Anticipated expiration: 1933-10-31

Description

F. W. ROBINSON.

PLATING ATTACHMENT FOR CIRCULAR KNITTING MACHINES. APPLICATION mm IAII. 2a. 1915.

1,203.132. Patented Oct. 31,1916.

a! 16 1 FA UNITED STATES PATENT OFFICE.

FRANK W. H QBINSON, OI READING, PENNSYLVANIA, ASBIGNOR TO THE NOLDE & B038! 00., OF READING, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

Ipeetfleaflcn 01 Letters Patent.

Patented Oct. 31, 1916.

Application fled mu 88, 1818. lei-la] No. 87,118.

To allwhom it may concern.

Be it known that I, FRANK W. Ronmsou, a citizen of the United States, residi at Reading, in the county of Berks and tate l of Pennsylvania, have invented certain new and useful Improvements in Plating Attachments for Circular-Knitting Machines, of which the following is a specification.

My invention relates to platingl attachments for circular knitting mac ines in which striping-thread carrier fingers are employed each of which has a universaljoint mounti and a needle engaging swing, as shown in atent No. 1,077,304, issued to me Nov. 4, 1913, and in my nding application Serial No. 866,579, fil Oct. 14, 1914.

The present improvement consists in provi means for intermittently operating said gers in a plurality of series, during the knitting operation, so as to reduce broken stripes having the breaks re tively positioned as required for predetermined embroidery efl'ects; as fully described in connection with the accompanying drawings and particularly defined in the claims.

Figure 1 is a sectional elevation indicating a circular knitting machine having m invention applied thereto in connection wi a controlling pattern mechanism. Fig. 2 is a plan view on the line 2-2 of Fig. 1 showing the arrangement of the carrier fingers in different series for selective operation; the cams for imparting needle-engaging swing thereto being shown as withdrawn to inoperative position. Fig. 3 indicates a stocking having polka-dot plating adapted to be produced by the specific construction shown. Fig. 4 is a detail view of the pattern-operated star wheel employed.

The drawings indicate a knitting machine having a non-rotary needle cylinder 1 mounted on a frame 2, the usual rotary cam ring and other well known knitting mechanism not involved in the application of my improvements being employed The striping-thread carrier fingers 4 are similar m general construction and mounting to those shown and described in my rior patent and application referred to, having a, umversal-joint mounting 5 at the periphery of a sleeve 6, fixed to a central carrier above the needlecylinder, andangidly projecting portion or arm 8 through which a needle-engaging swing is imparted to 1t.

As in my previous construction referred to, the rigid arm 8 of each carrier finger is arranged to serve as a rocker-arm, through which a needle-engaging swing is imparted to the finger by a contacting cam' this belng efi'ected by successive actions oi the cam upon an outer portion 10, and a lateral or crank-arm portion 11, of the rocker-arm. In my present improved construction a number of these carrier fingers (nine as shown) are arranged in a circular series around the central carrier rod 7 and these are divided into separately-operative sub-series by provlding them with cam-contacting portlons arranged at different distances from the knitting axis so as to lie in one or another determined cam-path; those fingers which have cam-contactmg portions arranged in a given path being thus grouped to%ther for selective operation, as etermined y a pattern-controlled cam mechanism.

As shown in Fig. 2 each of the rockerarms 8 is provided with two cam-contacti rollers through which radial and latera swings respectively are imparted to the finger; said rollers having collars, ac, 66, 00, or dd forming the cam-contacti portions above referred to as being loca in difierent cam-paths. The collars cc of determined are all at one distance from the center of rotation, the collars b b at another distance, the collars c c at a third distance, and the collars d d at a fourth distance.

The cam mechanism shown for selectively operatin determined fingers as thus grouped in di erent series, comprises two

similar cams

15, 15 each formed at one end of a rigid carrier rod 16; the other end of said carrier rod resting ugon a pattern-adjusted support 17 or 18 a apted to raise or lower the cam to operative or inoperative 'tion. These cams are also adwstable lnto difierent paths as required for operating-upon cam-contactin collars a, a, b, b, c, c, or d, d, as desired. is is accomplished as shown by merely providing a single adjustable cam guide 20 ha tapered passage-ways 21, 21in which sai cam rods are movable longitudinally in any position of the guide; and the latter being adjustably set in a fixed support 22, as determined by a series of notches 24 so as to hold the cams in the desired pat The cam rods are similarly guided in a fixed bracket 25 adjacent the pattern-adjusted

supports

17, 18.

These ad ustabIe cam supports 17, 18, as 10 are set y the guide 20 ferent paths by inder 3, and periodic rotary motion is imparted to said shaft in well known manner, through a star-wheel 31 thereon arranged to contact with a pin 32 when the latter is projected by action of pattern chain 33, so that the respective cams will be automatically lowered or raised at determined times as required.

As shown in Fig. 1 the cam rods are held in slightly incline positions, to osition the cams for the inner paths M and M) respectively (see Fig. 2); but as they are moved outward by the adjustable guide 20, they assume a more vertical position u on the adjustable supports 17 18, there y slightly raising the cams when they are set into the outer paths 00, dd and securing a uniform swing of the fingers without varying the size of the cam-contacting collars a b c d The adjustment of the cams jointly into difa single guide 20 and by hand, as indicated, is ordinarily preferable, the attern-controlled lowerin and raising of t e cams provided for, e ecting accurately and automatically the constantly recurring changes required.

The operation of my improved mechanism will be understood by briefly describing the production of a stocking having staggered Eolka-dot ornamentation as indicated in shown, are oppositely eccentric ortions on a shaft 30 suitably mounted on t e cam cyl- The stocking is knit in the usual manner to the point at which the polka-dot plating is to ap ear. At this point the

cams

15, 15 directly beneath the b b. The pattern contact collars a a and chain 33, is rotated through the eccentricoperated pawl 35, mounted on the main shaft 36 of the machine and actin upon the ratchet-toothed wheel 37 secure to the pattern wheel shaft 38; and one end of a lever 41 is arranged to fall into notches 39 40, so that the other end will operate a bel crank 43 which normally holds the pin 32 out of engagement with the star wheel 31. When the lever 41 is actuated. by a notch 29 in the pattern wheel 33, the star wheel is rotated by pin 32 so as to raise one cam 15 into operative position for the fingers in its path. As shown in Fig. 1, support 18 is raised with the correspondin cam 15, lyin in the path of the contact co lars a a, so t at only the alternate carrier fin ers 4 havingrsaid collars will be operated %Fig. 2). he pattern chain determines the length of the polkadots; and after a determined interval of plain knitting the other support 17 and cam 15 are raised by a further movement of the star wheel, so as to be contact collars bb in a fieren'; path, the effect being to form the spaced polka-dots in intermediate longitudinal lines. This alternate placing of the polka-dots is con- (aperative upon the tinned until the heel of the stockin is reached, when the

cams

15, 15 are mov by operation of the uide 20, to the inoperative position indicate in Fig. 2. After the completion of the heel, the dots are continued upon the up er art of the foot, but not on the lower hall; the additional contact collars cc dd being provided only upon the fingers which engage the needles knitting the top half of the foot, and the

cams

15, 15 being now moved by guide 20 so as too erate only upon these col ars cc and old. he pattern chain then operates the star wheel 31 to cause the polka-dots to appear only upon the upper half of the foot in t e same manner as when the cams were actuating all the fin ers for the leg portion of the stocking. he pattern chain indicated is arranged to make polka-dots embracing four courses at intervals of about thirty courses, in staggered relation, but this particular arrangement may be readily varied as desired. The attachment does not interfere with the ordinary operation of the machine and when the cams are in the position shown in Fig. 2, the machine may be used for continuous plain knittin as usual.

hat I claim is:

1. In combination with a circular knitting machine, a plating attachment comprising striping-thread carrier fingers each having a universal 'ointmounting and arranged in a plurality o separately operatable series, and means for imparting a needle-engaging swing to different determined series in different determined knitting courses.

2. In combination with a circular knitting machine, a plating attachment com rising striping-thread carrier fingers each aving a universal goint mounting and arranged in a plurality o separately operatable series, and means or imparting a needle-engagin swing to difierent determined series in di ferent uniformly-separated knitting courses.

3. In combination with a circular knitting machine, a plating attachment comprising striping-thread carrier fingers each having a universal joint mounting and arranged in a plurality of separately operatable series, and means for imparting a needle-engaging swing to one of said series in determined courses and to another of said series in other determined courses.

7 4. In combination with a circular knitting.

5. In combination with a circular knitting machine, a plating attachment comprising striping-thread carrier fingers each having a universal joint mounting and arranged in a plurality of separately operatable series, and means for imparting a needle engaging swing to a determined series in determined successive courses and to a different series in other successive courses.

6. A plating attachment for circular knitting machines comprising a circular series of striping-thread carrier fingers each of which is provided with a universal-joint mounting and with a rigidly projecting camoperated rocker-arm, the cam-contacting portions of different rocker-arms being located in different cam-paths; a plurality of operating cams; and means for adjusting said cams into and out of operative position relative to the differently located cam-contacting portions of said rocker-arms.

7. A plating attachment for circular knitting machines comprising a circular series of striping-thread carrier fingers each of which is provided with a universal-joint mounting and with a rigidly projecting camoperated rocker-arm, the cam-contacting portions of different rocker-arms being located in different cam-paths; a plurality of operating cams; and means for jointly adjusting said cams into determined campaths and for separately adjusting the same into and out of operative positions relative to said cam-contacting portions.

8. A plating attachment for circular knitting machines comprising a circular series of striping-thread carrier fingers each of which is provided with a universal-joint mounting and with a rigidly projecting cam-operated rocker-arm, the cam-contacting portions of different rocker-arms being located in different cam-paths; an operatin cam for said rocker-arms having a rigid carrier rod, pattern-operated means for ad justing said cam rod longitudinally, and separate means for adjusting the cam into one or another determined path.

9. A plating attachment for circular knitting machines comprising a circular series of striping-thread carrier fingers each of which is provlded with a universal-joint mounting and with a rigidly projecting cam-operated rocker-arm, the cam-contacting portions of difl'erent rocker-arms bein located in different cam-paths; a plura ity of operating cams for said rocker-arms each having a rigid carrier rod, pattern-operated means for adjusting said cam rods longitudinally, and separate means for jointly adjusting the cams into different paths.

In testimony whereof I afiix my signature.

FRANK W. ROBINSON.