US920671A - Take-up mechanism for knitting-machines. - Google Patents

Description

R. W. SCOTT & H. SWJNGLEHURSTn TAKE-UP MBGHANISM FOR KNITTING MACHINES.

APPLIOATION FILED MAY 27 f, w 1. T /y mw n ,mmm .im a 4, m w; w v ,A u mum fi. MA v 1 S of w m y e s "K dsc Lm F. .fw P W APPLIOTION FILED MAY 27, 1907.

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B. SCOTT d; H. SWNGLEHURST. TAKBUP MECHANISM FOR KHITTING MAGHINES.

APPLICATION FILED MAY 27, 1907. l

Patented May 4, 1909.

a SHEETS-SHEET 3.

. vented certain Improvements in Take-Up connection with' that class .of knittingmaslack that it provides nomieans for transmitting tension from a portionof the web in adabove the cylinder, 5 the ribbing needles c0- iJNiTEn sfia'ls ATi-aldil 1F il Mm ROBERT w. sOOTT, .or LEEDS POINT, NEW JERSEY, AND nAnRY'swINGLEn'UasT, or PHILA- DELPHIA, PENNSYLVANIA, ASSIGNORS TO OGONTZ, PENNSYLVANIA, A FIRM.

.SAID 'sooT'TAND Louis N. n. WILLIAMS, or

TAKE-UP MECHANISM FOR KNIT'ICF-MGHKNH.

Specication o Letters ratent.

Patented may e, ieoe.

lpplicaton filed May 27, 190?. Serial No. 375,359.

To all whom t mag/concern.' l

Be it known that we, ROBERT W. SCOTT and HARRY SWINGLEHURST, citizens of the United States', and residing, res ectively, in Leeds Point, Atlantic count New Jersey, and Philadelphia, Pennsylvania, have in- Mechanism for Knitting-l\lachines, o f which the following is a specification.

Our invention consists of a supplemental take-up device, which, while of general application, has been .devised mainly for use in chines in which the formation of ribbed web follows the formation of web with a pocket upon one side of the same. ln knitting webs of this character the usual positive take-up which engages the web at a point below the needle cylinder cannot impart any tension to the rib stitches in that portion of the web which follows'the pocket, since the latter is so-` vance of it 'to the portion bfthe web which follows it. Our improved supplementary take-up, however, provides for imparting tension to the web following the pocket, the action of said supplementary take-up being independent 'of any tension. imparted by the Ordinary take`-up mechanism of the machine.

In the accompanying drawings-Figure 1 is a side view partly in section .of suflicient of a rib knitting machine to illustrate our invention Fig. 2'is a sectional view on an enlarged scale of part of the take-up mechanism; Fig. 3 is a sectional plan .view on the line (the, Fig.`2, Fig. 4 is a sectional planview on-the line b-b, Fig. 2 5 and F ig. 5 is a View, partly in elevation and partly in section, upon the same scale as Fig. 1, and illustrating certain mechanism for eii'ecting thc automatic lift and release of the supplementary take-up device.

Referring in the vfirst instanceto Fig. l of the drawings, 1 re resentsthe needle cylinder of a circular knitting machine, 2 the cam ring or cylinder surrounding said needle cylinder, 3 the cylinder needles, 4 a needle dial operating with said'dial, 6 a ring to which said ribbing needlesare pivoted and 7 a cam l `ring whereby the ribbing needles are actuated. Neither ofv these features 4constitutes any part of our invention, nor 'is the latter limited in its ap lication to a'machinel of thisv machines of ot er construction, but in which a supplementary takeup is required. We

have not considered'it necessary to illustrate'y the ordinary positive take-,u device which is located below the cylinder of the machine, as

this also forms no part of our invention and may be similar to any of the devices'now used for the purpose.

Passing down through a hollow spindle 9 which carries the ribbing -needle dial 4 is a rod 10, having, at its lower end, a head 11:, which can Slidefree'ly in a tube 12, secured to and depending from the downwardly 1 o' jecting hub 13 ofthe dial 4, and surroun ing this tube 1-2 is,a,ring 14 provided-=with a spring actuated frictibn'plug 15`which'bears u on the tube 12 and prevents any slipping o the ring 14 ythereon except when it is sub# jected to pressure suiiicient tO overcome the frictional hold of said plug 15 upon the tube 12.

To the ring 14 are pivoted a series of web.

Free to slide on the tube 12 is'a sleeve 21.

having, at the' top, a flange 22 in which are' formed slots 23 for the passage of the web'- holding hooks 16 and struts 19, the slots for the reception ofthe latter -being so formed that vertical movement of the sleeve 21 and its flange 22 will not exert any pressure upon the struts.` Such vertical movement,'will, however, effect expansion an d .contraction of the series of Web-holding hooks 16, the inner walls of the slots acting upon the inclined backs 24 of the hooks to vcause projection of.

the latter when the sleeve 21 is depressedv and the outervwalls of the slots actin@ upon the inclined outer faces 25 of the hooksto' cause 55 type, being ap icable as well to rib knitting retraction of the same when the sleeve The head 11 gf the -rod 10 is,.connected to the sleeve 21 by means' of a set screw 26 passing through aslo't 27 in the tube 12L and' through said slot also passes the 'hooked lower end of a gib or key 29 which is attached to the head 117 the length of this gib or key being suchthat a certain amount of vertical movement of the sleeve 2.1 permitted independently offany like movement 'of the ring 14, downward movement ofsaid ring on the tube 12 being effected by contactof a slotted ilange 30 on the sleeve with the segmental rib 17 ofthe ring/and vertical movement of said ring being caused by contact therewith of the hooked lower end of the gib 29.

The parts arenormally in the position 2v shown in Fig. 1, the Web-en aging hooks 16 being retracted and the seeve 21 being raised to 'a point some distance above the ring 14 whichv` is in contact with thefhooked lower end of the gib 29. The first 'effect of ,the downward movement of the rod 10 therefore is to cause depression of the sleeve 21 and its slotted flange 22, thereby causing projection of the upper ends of they webengaging hooks 16 so as to cause the sameto engage with the web, the hooks then descending with the lianged sleeve so as to impart the desired tension to the web. When it is desired to release the-web from' 'this tension ,ai` coiled spring 35 vinterposed between the. boss and a collar 36, secured to the-rod 10 the rod 10 is lifted, the first portionvof this movement being imparted to the anged sleeve 21 only, so as to cause the retract1on of the Web-engaging hooks 1'6, and thehooked lower'end of the gib 29 then engaging With the ring 14 so as to cause the Webengaging hooks to partake of any further lifting movement of the sleeve.

The'upper end of the lifter rod 10 passes through a tubular boss 31 on an arm 32 which'projects from the upper end of a lifter post `33 at one side of the machine, said boss 31 engaging with a collar 34 at the upper end of the lifter rod 10 and also' bearing upon some distance below its u per end, whereby downward movement of t 1e post 33 is trans-.

mitted to the rod 10 through the medium of this coiled spring `35, and any sudden down- Ward strain upon the web, when the hooks` 16 first engage with the same is' .thereby prevented. y

The lifter post 33 has, in its lower portion,

side notches or teeth 37 for engagement with e.

a pawl 39 `pivotally mounted upon a swinging lever 40 which has a toothed segment 41 engaging with a pinion 42 on the shaft43` which drives the cam cylinder' or needle cylinder, depending upon which of these elements of the machine is the moving element,

when the desired amount of lift this lever 41 being an" ordinary member'of a machine of that type in which the needle 'cylinder or ca'm cylinder has both rotating and reciprocating or to-and-fro movement.

The

parts lifting movement to the post and` hence to the lifter rod 10 ofthe take-u device, but

y liras been imparted to the post 33 the pawl is moved out of engagement with the toothed portion of 'the same -by means of a lever 4 5 having a face 46 in contact with which the point of the pawl travels when it is thus inoperative,

said lever 45 being controlled by a suitablel pawl 39 is drawn into engagement. with the toothed portion of the post 33 by cam 46 on the patterndrum .47 of the machine. Y, y *i When the pawl 39 is out -of engagement with the toothed portion of the lifter 'post 33 A the latter is supported u on a catch pawl 49 loosely hung upon a roc shaft 50 to which is seour'eda lever 51 acted u(pon by lugs 52 en the pattern drum 47,' sai shaft 50vhaving an arm 53 which is confined between a lug- 54 on the awl 49 and a spring-actuated plug 55 guide in a socket 56 on said pawl, as shown in Fig. 5. When, therefore, it'is desired to release the post 33,9in 'order to permit descent ofthe su plementary take-up device, the lever 51 is li ted by means of the `lug52 on the pattern drum, and this causes the arm 53 to de ress the plug 55 and thus, through the medium of the spring which backstlieplug, impartpressure to the socket 56 and withdraw the pawl 49 from `engage-A ment with the tooth of the post- 33, the lat-'- ter being then free to descend by gravity with the knitted web which is engaged by the hooks 16 of the take-up device.v When the take-up has descended to the proper extent the lever 45 is Withdrawn from engagement with'the pawl 39 and lifting movement is then again imparted to the post 33, which lifting movement continues until Jthe4 lever 45- again renders the pawl 39 inoperative,

whereupon the catch pawl 49 comes into.

play to retain the ost 33 in its raised position, the lever 51 raving meantime passed from under control of its lug 52.

In order to temporarily arrest the descent i Vof .the supplementary take-up, as. may be necessary 1n certain stages of the production of the web, the lifter post 33 has a second set of teeth'60 formed thereon, which teeth are adapted to be engaged by a pawl 6l pivotally mounted upon a lever 62 which is ung to a fixed fulcrum 63 on the frame of the machine and is acted upon by a lug 64 on the attern drum 47 said pawl 61 being normal y pressed forwardly or into position to engage"with the teeth 60 by means of a loose or pocketed spiral spring interposed between a socket onl the aWl and a lug 66 on the lever 62. Normal y, however, that is to say, during all that time when the lever 62 is not under the influence of the lug 64, the pawl 6l is held out of 'engagement with the lifter )ost 33 bythe action of a deflector bar 67 which pressesupon the tooth at the upper end of the pawl 61 and forces the same out oi engagement with the teeth 60.`

The lug 64 shown in Fig. 5 has tvvo rises, so that the pavvl 61 not only arrests the descent of the sup ilementa'ry take-up device but also backs o the same, the second rise of the lug serving to impart lifting movement to the pawl 61 after it has engaged the teeth.

The function of the disk 2O at the top of the Web-engaging hooks 16 is to prevent the portion of the Web from passing behind the ooks or otherwise so disposingV itself as to prevent said hooks from properly engaging with the Web' when they are projected after the4 formation ofsaid pocket has been completed.

We claim l. The combination of a rib knitting machine h aving a needle dial with tubular stem with a supplementary take-up device and antomatic means for raising and releasing the same, said means including a connectior passing through said tubular stem.

9. rlihe'combination of a rib knitting machine having a needle dial with tubular stem with a supplementary take-up' device, and automatic means for raising and releasing the same, said take-up device being freel to descend by gravity when thus released, and its raising means including a connection passing through theI tubular siem ol the nec dle dial.

3. 'lhe combination ol a rib knitting machine with a supplementary take-up device, and means for raising and releasing the same, said device comprising two members with. an interposed spring.

4. 'lhe combination of a rib knitting machine with a supplementary take-up device, and means for raising and releasing the same, said device comprising two members, both free to" descend by lgravity when thus released, and an interposed spring 'thrrmgh which the force oi' one descending*member is exerted upon the other.

5. A supplementary take-up device for knitting` machines comprising Web-engaging hooks, a member to which saidhooks are pivoted, and expanding an contracting member for said hooks having movement independent of the pivotal member, and means whereby oneof said members is caused to impart movement to the other in both directions.

6. A take-up device for knitting machines comprising a .vertical support, a series of web-engaging hooks, a pivotal member for comprising a series of Web-engaging lnooks,

means for raising and lowering the same, means tor expanding and. contracting the hooks, and a guard plate or shield above the hooks.

9. A take-up device for knitting machines comprising a vertical sup o rt, a series of Webengaging hooks, va pivota member and an expanding and contracting member for said hooks movabljv mounted upon said support,

anda gravi@r rod for effecting such move` ment.

10. n. take-up device for knitting Inachines comprising a vertical support, a series of web-engaging hooks, a pivotal member and an em anding;` and contracting member for said hooks movably mounted upon said support, a gravity rod for leilecting such movement, and automatic means lor raising and releasing said rod.

1]. The combination of a supplementary takeup device for knitting machines, means for automatically raising and releasing the same, and supplementary means for arresting its descent, andimparting an independent lift to it,

12. The combination in a supplementary take-up device for knitting' machines, of a toothed rod forming one of the elements of said take-up device', a vibrating member of the'machine carrying a paWl for engaging said toothed rod,- and means for rendering said pawl operative or inoperative.

13. The combination in a supplementary take-up device for knitting machines, of a toothed rod forming onel of the elements of said take-up device, a vibrating member of the machine carryingr a pavvl for engaging said toothed rod, means lor rendering said pawl operative or inoperative, and a catch paWl for retaining the rod 1n the elevated po sition.

14. rl"he combination in a supplementary take-up device for knitting machines, of a toothed rod forming one of the elements of said take-up device, a vibrating member of the machine carrying -a pawl for engaging said toothed rod, means for rendering said rod forming part of said device, means for pawl for engaging the rod, and-means for eutometicaillT releasing said peWl from engagement with the rod.

In testimony whereof, We have slgned our names to this specification, in the presence of 15 two subscribing Witnesses. l

ROBERT W. SCOTT. i HARRY SWINGLEHURST.

Witnesses HAMILTON D. TURNER, KATE A. BEADLE.

paWl operative or inoperative, a catch paWl for retaining the rod in the elevated position, and means acting through the medium of a spring for throwing said pawl ont of engaging position.

15. The combination in a slip )lementary take-up device for knitting maeihines, of a raising and releasing seid rod, and a supplel mentary support for said rod comprising a

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