US2052776A - Mechanism for effecting normal and reverse plating - Google Patents

Description

Sept, 1, I A ET AL MECHANISM FOR EFFECTING NORMAL AND REVERSE PLATING Filed fan. 9, 1929' s Sheets-Sheet 1 I nveni/o ms J0 YwWJLQ/ws o n, ROEeWZHLawQOW,

]Sept. 1, 1936. J. LAWSON ET AL MECHANISM FOR EFFECT ING NORMAL AND REVERSE PLATING Filed Jan. 9, 1929 a Sheets-Sheet 2 zibhrir/Lawso n, lZoberi/flllcgwson,

' Sept. 1,1936. I JiLAwsQN ET A I 2,052,776

I MEQHANISM FOR EFFECTING NORMAL AND REVERSE PLATING Filled Jan. 9, 1929 3 Sheets-Sheet s nioius Jbzv ii/Laweson, Zwri HLaws an,

i -YM ax Patented Sept. 1, 1936 UNITEDSTATES PATENT OFFICE lVIECHANISM FOR EFFECTING NORMAL AND REVERSE PLATING John Lawson and Robert H. Lawson, Pawtucket, R. I., assignol's to Hemphill Company, Central Falls, R. I., a corporation of Massachusetts Application January 9, 1929, Serial No. 331,192 1 Claim. (01. 66-3 6) 1 This invention relates to mechanism for and have chosen to disclose the normal plating as processor efiecting normal and reverse plating, effected by needle movement and that is the the normal plating being herein disclosed as efpreferred manner of operation. fected by needle ideflection and the reverse Our invention may be applied to any type of plating being herein disclosed efiected through independent needle knitting machine, but we the cooperation of sinker or like instrumentalihave represented the same as applied to a cirties. cular hosiery knitting machine of the latch nee- In order that the principle of the invention dle type and have selectedfor illustration a Banmay be' readily understood, we have disclosed in ner knitting machine without, however, limiting 10 the accompanying drawings a single embodiment ourselves thereto. 10 of means for practicing the invention. The Banner machine to which our invention In said drawings, is here disclosed as applied is of the general type Fig. 1 is .a plan view .of the sinker or web shown in the U. S. patent to H p l N0. 933,- holder bed ring and showing in horizontal sec- 443, and shown also in U. S. patent to Robert H. tion the cams of the sinker cam ring, the top Lawson, Reissue No. 16,584, April 5, 1927. plate of said ring being removed; 7 The machine is provided with needle cylinder Fig. 2 is a vertical central section upon the line I that may be of the usual construction but if 22 of Fig. 1 and looking in the direction of the desired the upper part of the needle grooves 2 arrows on said figure; may be suficiently inwardly enlarged or deepened Fig. 3 is a detail in vertical section upon an to permit sufiicient inward movement of the nee- 20 enlarged scale on the line 3-3 of Fig. 1, and dies. The needles are represented at 3 and while showing one of the several sinkers or like instruwithin the scope of the invention they may be 'mentalities and the adjacent needle at a period of any type, they are preferably provided with in the operation somewhat prior to the casting hooks i and latches 5. The needle cy is on point, in the efiecting of the reverse plating; desirably of the revolving type, though obviously 25 Fig, 4 is a, view imilar to Fig, 3, on the line Y the invention is not limited in this respect. We 4& of Fig. 1, but representing the position of y p e a Slight b d in the n d Stems the parts at substantially the casting off point as indicated n t O-pe d g app of in reverse plating; Lawson and Cloutier, Serial No. 184,576 filed April Fig. 5 is a view similar to Fig. 4 but represent- 1927, so as to render the needles ufii n ly 30 ing the relative position of a needle and a sinker Dr ngy for the pu intendedi slightly prior to the deflection of said needle to The web holder bed rin is d ca ed at 6 and effect regular plating; and v the cap or cam ring is indicated atl. The sink- Fig. 6 is a view similar to Fig. 5 but represente r w holders may be d e irab y a l r v ing the continuation of the movement for normal Of a p l yp though Within e pe and plating, about to be initiated in Fig. 5. purpose of. our invention some of the sinkers may In accordance with our invention, we effect be of a'usual type, as, for example, if normal normal plating by slight, so-called, deflected Plating is always to occur thereat. As stated, movement of selected or predetermined needles pr er ly n as herein indicated, all h nkers 40 transversely of the needle series and we effect a o Special typ d W v chosen to repm- 40 reverse plating by cooperative movement of sinke t t pe yp Shown in Figs- 2 t0 6 iners or like special instrumentalities without deelusive. Therein the body of t sinkers iS pflective needle movement. More broadly stated, resented at the lower nib at the pp nib we feed two yarns in a plating relation and we at Ifi, the throat at H, the base portion of the effect both normal plating and reverse plating, sinker at 12, and the upstanding butt at I3. The 45 one of said types of plating being effected butts l3 may in the simplest form of the inventhrough needle deflection and the other type of tion be of all the same length, but different plating being effected through the cooperation of lengths may be employed upon difierent sinkers sinkers or like special instrumentalities, but our when employing different cams to act upon invention is not limited to normal plating as difierent sinkers. In the disclosed embodiment 50 effected by needle deflection, and reverse plating of the invention, however, the butts l3 are inas effected by sinker cooperation because within tended to be acted upon by the regular cam as the broad scope and purpose of our invention indicated at I4 in Fig. 1 for effecting the casting both normal and reverse plating may be otherofi and therefore all of the butts may be of the wise effected than as herein shown. Herein we same length. Preferably we employ a guide or 55 holding ring l5, which is mounted upon the extreme top of the needle cylinder l, and is provided with an annular recess l6 which receives the inner ends H of the base portion of the sinkers as well as a needle deflecting instrumentality I 8 to be hereinafter referred to. Said ring I5 is desirably not provided with radial recesses,

but instead the annular recess 16 is circumferen tially continuous, and serves not only to guide the inner ends of the sinkers 8, but also the inner ends of the needle deflecting instrumentalities l8.

Each sinker or each special sinker'B is pro-;

vided with an inclined outer edge l9 downwhich one or it may be both of the yarns move in effecting reverse plating in a manner, disclosed in Figs.

9 and 10 of our Canadian :Patent.No..275,9D5,'..

dated November 29, 1927. Desirably both of the threads pass down the rear edge 19 in the manner fully described in that patent.

The sinker cam ring, as shown most clearly in Fig. 1, is provided with an inner pathway 20 formed "between an inner circumferential cam formation 2| having 'a cam 2| and an intermediate circumferential camj formation 22. There are also provided an intermediate cam pathway 23 formed between the circumferentially extending cam formation 22 and an outer [cam formation 24 that extends only part way about the sinker head; and also anouter pathway 2d which is outside of the cam formation 24 where the same exists,'and extends about the entire circumference of the sinker cam ring. The intermed'ate cam formation 22 is provided with the incline I 4 already referred to and the knitting point is indicated by the shoulder 25. The

' butts l3 of the sinkers are all received'within the said circumferential pathway 26.

The needle deflecting instrumentalities I81 are preferably in number equal to the needles 3, being one for each needle. Desirably they respectively underlie the sinkers l2. as indicated in Figs. 2 to 6 and they have laterally bent inner ends 26, which, when they engage the needles, deflect the same very slightly outwardly as indicatedin Fig. 6, so as to insure the effecting of normal plating. In order to move the said instrumentalities in and out, they are provided with butts 2l which at different stages of the op- "eration of the machine travel in the outer pathway24;

As shown in Fig. 3, the sinkers 8 receive their reverse plating" movements not through the -agency of 'a cam formation acting upon the butts 1'3, but through the agency of the needle deflect- "ing instrumentalities l8.

To that end said needle deflecting instrumentalities are provided each with a shoulder 23 which at the proper time impacts upon the end 29 of its sinker 8 and so moves the same inwardly as indicated in Fig. 3..

At such time the butt 2? of the needle deflecting instrumentality I 8 in question travels in the intermediate groove 23. Viewing Fig. 1 it will be observed that when the needle deflecting instrumentalities l8 travel along the intermediate groove 23 the shoulders 28 through their impact H with the-ends 29 of the sinkers 8 that effect reverse plating so move said sinkers inwardly that the two yarns are reversed in position as they move down the inclined sloping edge l9 and the V stitch which is thus reversed is cast ofi at or near the lower end of said inclined edge l9. At other times the said butts 2! travel in the outer pathway 24' and the cam formation of that pathway is such that at the proper time the same causes the inner bent end 26 of the instrumentality l8 to engage the back of the stem of the needle as represented in Fig. 6 and move the needle very slightly outward but sufliciently to change from reverse plating to nyrmal plating. When reverse plating is to beresume'd, the proper sinkers 8 are moved inwardly in the special manner described so as to cause one or both of the threads to pass down the back of the sinkers.

The two threads are fed in a plating relation in a manner not necessary fully to describe, but desirably that disclosed in the H. Lawson, Reissue No. 16,584. 7

Having thus described one illustrative embodiment of the invention, and the best mode known to us for carrying out the process of the invention,

it is to be understood that although specific terms are employed, they are used in ageneric and descriptive sense and'not for purposes of limita- We claim:

chine wherein two yarns are fed in a plating relation, a needle cylinder having at the upper end thereof a guide ring having a circumferential repatent to Robert In'a circular, independent needle knitting'inacess, a circular series of needles, a series of special.

sinker like instrumentalities for all'the needles respectively, and a series of needle deflecting instrumentalities for all the needles respectively, the inner ends of said sinkers and needle deflecting instrumentalities being received in operation in said recess, and means for manipulatingsaid sinkersand said needle deflecting mstrumentalities in timed relation with the needles, so as 'to effect both reverse and normal plating;

JOHN LAWSON. ROBERT I-I. LAWSON.

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