Патент USA US2108773код для вставки
Feb. 15, 1938. R. H. LA'WSON 2,108,773 TAKE-UP ROD Filed April 28,1936 2 Sheets-Sheet 1 Z/YYENTWE- ~ R0BEIE’THLAWS'01X By @017 TM ' . _AZ'Tf)/i Feb. 15, 1938. 2,108,773 R. H. LAWSON TAKE-UP ROD Filed April 28, 1956 - 2 Sheets-Sheet 2 ‘ BawmT/YZ/Imsm Y. 19799011? iDM' ATT’y. Patented Feb. 15, was 2,103,773 24083175, TAKE-UPnoD'lJ Q »' j '- jf > ..'..'“.'1>tobert fl.‘Lawsoingllawtucket, 3.11., “assignor to I V . l, ss?einphillgcompany, Central Falls, R; 1., a cor-v > ,7 Duration of Massachusetts‘ _. H -‘ .. . i . 1 '-"_Application‘-April 28, 1936, Seria‘ll‘No'. 76.7.77 ‘ " ideas;- (01,-,- 66+146>1 " Thiscaseinvolves take-up rod‘suchasis'com ‘m'only ‘.used j‘ ,in'ulti-feed‘ knitting ' 'nrachines, which ha's'av special "feature'of being extensible so that threading on machines of large size is greatly anlithe,d.*.1"v . , ’ The take-‘up: rods "comprise a rectangular base or holder 6 from-which extends a tubular part ll A’ wireextension‘Wilts-within the tubular part ‘I and'is bent as shown at 9 to carry a porcelain or other yarn guide I0 through which a yarnll l' "lnthe drawings:v is threaded, this yarn comingfrom a cone or > ‘Fig. 1 is "a" section ihmngipm of g'knittins other'supply. The extension, 8 is connected for machine and one of’ the, extensibleftake-upy rods ‘normal unitary engagement and operation with in operativegposition‘; and 'j p y 7 - , p 10 iFig'nz'is a similarlviewb‘ t sh‘owing'therodex tended toaposition for'threa'dingQetc." ‘ “ _ J . ‘ ?yMultis-f‘eed knitting machines aresom'etimes provided with a‘seriesfo'f thesejsorjckilled take-up '1 15 - the] tubular part 1 by means of a tension spring 12. attachedtoeach: element. The spring serves to _ draw "the extension down into the tubular portionina telescopic fashion asshown in Fig. ‘1‘, but allows it to be withdrawn or extended thereby ‘rods or arms,.onei for each yarn,‘ vthe function ‘ greatly.‘ increasing the ‘length of the arm at such of‘ the‘rod ‘being to" r‘elievejtension in its p1articu-, times'_ as it isi'de‘sired to'tread it. The end of ‘the l'ar'yarn' anew ‘avoid breakagelof yarn‘ andjiree ' part‘?has. been rounded off. toallow it to enter quentlstoppingiof the machine. It'would other wise make the operation“ of the machine more certain and provide the feeding of yarn under a 20 more even tension. These rods are normally mounted at the top of a multi-feed machine and thus are necessarily somewhat inaccessible to the operator since they are very likely to be out of his the" tubularjportionj with aininimum of ' effort. " The base or holder ‘6 has an extension i3 pro jecting in the opposite direction from. the tubular part at which has been attached a spring It for ' the purpose of resiliently holding the rod in the ‘position shownin Fig. 1. This spring M has been attached to a clip l5 which is in turn hooked about the rim, of a disc IS, the hub I‘! of which 25 tion. Such take-up‘ rods may swing throughout ‘ is ?xed to post I. This disc may be moved along a de?nite are for relieving tension in yarns the post for the purpose of simultaneously ad threaded through them and further, may move justing all the springs M. The upper end of the throughout an additional extent to actuate elec ‘spindle or post I carries a'conical disc: 18 which trical or other stop mechanism. Such a con serves as a stop for each of the take-up rods. reach especially when in'their uppermost posi struction forms the subject matter of co-pending U. S. application Ser. No. 81,897. . It is the purpose of this invention to construct a take-up rod or arm which will assume normal dimensions when in‘ its operative position and 35 which will perform all the functions of the usual take-up rod, but when it is desired to thread a yarn through the end of any rod, will allow that rod to be extended to a position wherein it may be very easily handled and may be threaded 40 without resort to threading hooks or without standing on a ladder, or otherwise inconvenienc ing the operator. - Referring to the ?gures of drawings, post I which would extend upwardly from the center 45 of the machine carries- a support consisting of a hub 2, spokes 3 and a rim 4 within which a plurality of take-up‘ rods or arms have been pivoted at 5, the point of pivot is determined by a slot cut vertically within the rim 4, one slot for 50 each sweep, and a groove machined about the In operation these rods will normally maintain 30 a position up against the stop “3 as shown in Fig. 1, except when excess tension in one of the yarns draws its rod down against the resistance of a spring. This movement of the rod will com pensate for all jerks and uneven tendencies in the 35 yarn as it is drawn from a supply by knitting needles or by other devices such as positive feed ing wheels or the like. When it is desired to thread the yarn through the eyelet 10 for any purpose, the operator may reach up with a hooked instrument of some suit able nature and will swing the take-up rod about the pivot‘ 5 until it is in approximately the posi-' tion shown in Fig. 2. In this position he will draw the extension 8 from the tubular part 1 45 extending the spring as much as is necessary until the ‘eyelet is in an accessible position. The tension in spring l2 will be sufficient to prevent return of the tubular part of the device since the extension l3 will, be moved to a position 50 outer edge of the rim within which has been wherein spring l4 although extended, will have ?tted a wire as indicated at 5 for the sweeps to swing upon. Other convenient mechanical con very little effect to return the part of the take up assembly to upright position. This will be evident from an inspection of Fig. 2 wherein the point of connection for the spring to the exten 55 structions may be resorted to for pivotally 55 mounting these elements. 2,108,773 2, .. ?tting within said tubular part but movable sion 13 is almost directly above the pivot 5. After lengthwise thereof for the purpose described. 4. A take-‘up rod for machines of the type de threading the take-up rod, the extension 8 will be allowed to telescope within part 1 being drawn scribed having a pivot, an arm extending in one and guided therewithin by spring l2, whereupon direction from said pivot and carrying an eyelet the rod may be swung back to a position such as it normally occupies. It will be necessary to draw off a little slack yarn and to ?ip the rod upwardly until the full force of spring l4 may be advantageously exerted. . through which a yarn is to be threaded,~a short extension in the other direction from said pivot and a spring attached thereto for urging the rod in one direction, said ?rst mentioned arm being ‘ constructed in such a manner that’ it can be 1O In its broadest aspect this invention involves readily extended in an axial direction and means aillustrated’ take-up rod andof means the general whereby description the rodof or that: ‘a’ "for automatically returning the ‘said arm to its portion of the rod can be swung down and ex-. original or active position. 5. A take-up rod for machines of the type de tended to an accessible position for threading. 15 One particular construction has been illustrated scribed having in combination a pivot, an arm 15 and that is to be interpreted as illustrative of ' extending in one direction and carrying an eye the invention and not as limiting the same. The let through which a yarn is to be threaded and 7 means forrresiliently urging said arm in one di invention is de?ned in the appended claims. _ I 20 claim: ’ r rection, said arm comprising a tubular part, an y 1. A take-up rod for machines of the type - extension ?tting within said tubular part and 20 extending axially thereof for carrying said eyelet described comprising a yarn tensioning armv re siliently urged in one direction and means at tached to said arm for allowing the same to be displaced along its length and to elongate the said rod so that it will assume an accessible posi tion for the purpose of threading. - 2. A take-up rod for machines of the typerde scribed having a pivot, an arm. through the end of which a yarn is to be threaded and means 30 for resiliently urging said arm in _' one direction, said arm being extensible axially to substantially increase the length of the same for facilitating threading. 35 , - ' 3. A take-up rod for machines of the type de scribed having a pivot, an arm through the end of'which a yarn is to be threaded and means for resiliently urging said arm in one direction, said arm comprising a tubular part and an extension and a spring connected, to the extension and the tubular part for drawing thetwo intotelescopic engagement. ' ' = ' ' 6. A take-up arm for machines of the type 25) described having in combination a pivot, ‘an arm extending in one direction from the pivot, said arm beingformed in two parts one of the parts being slidable relative to the other so that one part may-be extended and means for normally 30 maintaining the two parts in engagement and to resist extension. ' j ' ' - ‘ r ' '7. A take-up arm for machines of the type de scribed having in combination a pivot and an extending, arm, said arm being formed in two parts and being extensible, one part being s-lidable within and axially with respect to theother. ROBERT H. LAWSON.