US1149330A - Take-up mechanism for knitting-machines. - Google Patents

Description

e. P. BOSWORTH.

TAKE-UP MECHANISM FOR KNITTING MACHINES. APPLICATION FILED JAN.4, 1915.

1,,M9,83G. Patented Aug. 10, 1915.

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GEORGE P. BOSWOR'IH, OF CEHTIEt-AL FALLS, RHQDE ISLAND; ASFJIGNOR- TU HEMPHILL MANUFACTURING 30., OF PAWTUCKET, RHODE ISLAND, A CQRPOEATIDN 0?? MODE ISLAND.

TAKE-El? MECHANISM FOR KNITTING- MAG...

- Specification of Letters Patent.

Z '0 aZZ whom it may concern certain. new and useful Improvements in;

Take-Up Mechanism for Knitting-lilachines; of which the following is a specification.

My invention relates to take-up mechanisrn for stocking knitting machines having a rotary and reciprocating needle cylinder and oneiobject is to provide a tal-ze-up which Will perform its take-up action continuously during round knitting and Will automatically become inoperative during heel and toe knitting,- this beingdesirable because then the fabric is hanging on one hall the needles Which are idle. and are not casting oil stitches. I

The invention consists in the features and combination'and arrangement of parts hereinafter described and particularly pointed out in the claims.

in the drawings: Figure 1 isa front View of the take-np mechanism and the revolving can which receives the goods from the needle cylinder, a part of the frame of the machine being shown in this View partly in section. Fig. 2 is avieW of the take'up mechanism and receiver or can taken a quarter turn from F 1g. 1.. Fig. 3 1s a detail sectional view. Fig. 4. is a view of gearing connecting the take-up rolls. 5 is a view of a detail.

ln these drawings, the needle cylinder. 1 is of the ordinary construction as employed in stocking machines for instance of the Hemphill or Banner type having a gear 2 by which it is driven.

3 indicates a part of the fixed "frame in which the gear is housed.

Depending. from the needle cylinder is a tube 4 of tin or other light material through which the fabric as it leaves the needle passes to a receiver or can 5 after passing through the take- up rolls 6, 6. These are journaled 1n the sides of a bracket .or 'con necting member 7 located between the lower end of the tin tube and the can and serving as the connection between these. This bracket has formed therewith a cylindrical portion Sin which thelower end o' the tin tube fits, it being brazed or otherwise secured thereto. .Thisjcyhndrical portion of the bracket supports loosely a cam or con- Application filed January a, 1915, sen n 4 trolling ring by a 10 at the upper the bracket as shown in Fig. 3 or in dotted lines, Fig. 1. The cam or controller is I I a rornied wlth an inclined or cam, shaped ring. ill). i935.

edge of the cam or controller resting j on y the upper edge of the cylindrical portion of lower edge at 11' to be engaged by a pin 12 of a pawl lever 13 pivoting about a shaft letinounted in the sides of the bracket 7. This pawl lever has pivoted thereto a pawl 15 under tension of a springlfi which keeps the pawl in engagement with a ratchet Wheel 1:1" fixed on the shaft it. Theshaft 1% carwas a gear 19 meshing with a gear 20 on the shaft of the take-up roller 6 and gear 19 meshes also with a gear 21 jonrnaled on a pin carried by one side of the bracket 7, and this gear meshes with the gear 22 on the shaft of the other take-up roll 6"." The, shaft of the take-up roller 6 is jo urnaled in slots formed in the sides of the bracket 7 so" that the said roller 6 may have movement to and from the othertakeup roll 6. The take-up roll 6 is held yieldingly against the roll 6 by springs 24c, connected with the axes of the said gears. This yielding mounting is to permit the passage of'thickened portions ofthe fabric or bunches of lint or raveling; During round knitting the cam or controller 9 is held against rota-.

tion by engaging a suitable fiired'member.

This may be pro tided for in'various'ways I but in the particular constructionshown, the

cam ring has a stop projection flii' fixed. thereon whichengages a stop projection 26.

fixed "on a suitable part of the'stationary frame of the. machine forlinstsnce thra flange 2?. The tin tube is'fixed to the needle cylinder or rather tothe gear .2;there of by the screws 28 nassing through ears or lugsj29 of a ring v30 brazedbr otherwise lined on the tin tube. This connectionimparts to the tin tube and to the eitherthe continuous rotary motion .ofthe needle cylinder, hile doing. round knitting. o'r 'tlle I rotary reciprocating movement,*during the formation of the heel or to-e pockets. The

r can, take-up and tube areisustained by a. pin or hearing member 31 vadjnet-ably mounted in a fixed bracket 32,,secured to the stationary frame of the machine, indicated generally at 3,:bet or'bearing takes Weightef the can,takeup;and-tubes h leeth sc elsfl im the ore. mentioned. v This pin f motion of the needle cylinder to said parts. By lowering the bearing 31 the tin tube with the take-up can be dropped down off from the screws 28 for the removal of said frame projection or stop 26. As the pawl lever travels around its pin 12 will ride on the inclined or cam shaped lower edge of the controller, which is now stationary and consequently, being under tension of the spring 16', the pawl lever will be rocked 'up and down and its pawl will therefore turn the ratchet l'l' one step for each revolution of the can and tin tube and the take-up rollers being driven from this ratchet through the gearing described, the taking up of the fabric will be performed and the fabric after passing between the take-up rollers willbe stored in the can 5 which also is in rotation. Backward movement of the ratchet will be prevented by the detent 32, Fig. 1, pivotally mounted on one side of the bracket 7 and pressed by a spring 33. Nowwhen the machine goes on reciprocating knitting for the formation of the heel and toe pockets, the tin tube together with the can and take-up will reciprocate also,

being connected as before stated, with the,

needle cylinder driving gear. At this time it is desirable that no take-up action of the rolls 6', 6 be performed because at this time, the knitted fabric is hanging on the inoperativeneedles and no stitches are being added to the main portion of the tubular fabric. In other words, regular knitting has ceased and the formation of the heel and toe is being done. As soon as the rotary reciprocating motion begins, the cam or controller 9 will'partake of this motion owing to the frictional contact between the: said cam or controller and the part or ring 8 upon which it bears and therefore the relative position of the cam to the pin 12 will be maintained. all the parts reciprocating together. Consequently no motion will be transmitted to the pawl lever and the take-up rolls will remain idle as no take up action will be accomplished. This condition obtains until-the heel or toe pocket has been completed and round knitting is resumed whereupon'thc cam or controller will be arrested by the stops 25 and 26 and then the pawl lever will be oscillated by the combined action of the pin 12 riding a ainst the ledge of-the cam and the retracta 1e spring 16.

It will be observed that the cam edge extends practically throughout the entire circle of (the cam or controller, that is, the in-.

clined edge extends substantially continuously from the high to the low part of the cam, giving-a gradual movement to the pawl lever and avoiding the noise and shock that results where a tappet on the take up strikes a tappet onthe frame. All tappet action is avoided by my construction, and this result flows from the fact that during reciprocating knitting the relation of the cam to the pawllcarrying lever with-its pin 12 is not altered and hence a long incline can be employed, this being substantially the full circuit of the cam edge.

In cases where the needle cylinder or reciprocating member makes a full revolution or more the loose cam ring will still perform the function above mentioned, of'preventing the operation of the take-up during reciprocating knitting as the slight motion of'the cam in relation to the take-up, due to the stops 25 and 26 coming in contact will not be suilicient to ,operate the pawl lever,

take-up rolls from the controller, said controller being free to reciprocate with the take-up during heel and toe knitting, substantially as described.

2. A take-up mechanism for stocking knitting machines, comprising take-up rolls, a mounting therefor, connected with the knitting head to revolve therewith bodily in one direction or to reciprocate therewith, a cam ring or controller revoluble with said mounting, means for holding the said ring against revolution during round knitting and permitting the same to revolve with the said mounting during reciprocating knitting, and means for operating the take-up rolls from the cam ring while the same is stationary, substantially as described.

3. A take-up mechanism for stocking knitting machines, comprising take-up rolls, a mounting therefor revolving bodily with the knitting head, both during round knitting and reciprocating knitting, a cam ring carried by said mounting to revolve therewith except when restrained, stop means on the fixed frame to contact witha portion of the cam ring to hold the same against rotation during round knitting but permitting said ring to revolve with the take-up mounting during reciprocating knitting, and means carried by and revolving with the mounting and operated from the cam when stationary for rotating the take-up rollers step withsaid mounting and carried frictionally thereby to revolve at times therewith, stop means on' the frame for holding the cam against revolution during round knitting,

said stop means permitting the cam ring to;

revolve with the take-up during reciprocating knitting and means revolving with the mounting and operated by the cam when held stationary for rotating the take-up rolls step by step, substantially as described.

5, In combination in a take-up for stocking knitting machines, take-up rolls, a

mounting therefor with means for connecting the same with the rotary part of the knitting head, a cam ring arranged coaxially with said mounting and carried frictionally thereby to revol've at time therewith, stop means on the frame for holding the camagainst revolution during round knitting, said stop means permitting the cam ring to revolve with the take-up during reciprocating knittingand means revolving with the mountin held stationary for rotating the take-up rolls step by step, said means comprising a spring pressed pawl carrier bearing on the cam edge,.a'pawl on said carrier, and a ratchet connected withthe take-up rolls, substantially as described.

(i. In combination, the take-up rolls, a

mounting therefor having means of connection with 'the knitting head to revolve therewith during round knitting or to reciprocate during heel and toe work, a cam encircling the axis of said mounting and frictionally carried by the mounting to revolve therewith at times, a spring pressed pawl lever carried on the mounting to revolve therewith and operated by the cam ed e, a pawlon said lever, a ratchet OPBl'iltB by the pawl and connected with the take-up rolls, and stop means for holding the cam ring against revolution with the take-up mounting during round knitting, substantially as described.

7. In combination, the take-up rolls, 'a mounting therefor having means of connec tion with the revolving member of the knitand operated by thesame when ting head, acam .encircling the axis of said mounting, and frictionally engaging said mounting to revolve therewith during reciprocating knitting, fixed stop means for holding said cam against revolving with the mounting during round knitting and means revolving with the mounting-and operated by contact Withthe cam .for rotating the takeup rolls, step bystep during round knitting, said cam having a cam edge substantially continuously inclined from its high "to its, low point, substantially as delower edge inclined, said cam revolving'with said tube during reciprocating knitting by its frictional contact with the tube, stop' means on the fixed frame'for holding said cam against revolution during round knitting, ta'ke-up rolls bodily revolving with the tube, means also bodily revolving with the tube and engaging the cam to be operated thereby when the latter is held against revolution, said means operating the take-up rolls, step by step, substantially as described.

9. In combination the take-up rolls, a mounting therefor having means of connection with the revolving member of the knitting head, a cam encircling the axis of said mounting, and frictionally engaging said mounting to revolve therewith during reciprocating knitting, fixed stop means for holding said cam against revolving with the mounting during round knitting, and means revolving with the mounting and operated by contact with the cam for rotating the take-up rolls step by step during round knitting, said cam having a high point on one side thereof and a low point at substantially the opposite side thereof with inclined edges between substantially continuous from the high to the low point, substantially as

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