US1057782A - Knitting-machine. - Google Patents

Description

SWINGLEHURM KNITTING MACHINE.

APPLICATION FILED JUNE 28. 1911. l

- Patented Apr. 1, 1913.

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KNITTING MACHINE. APPLICATION FILED4 JUNI: 2a. 1911.

PatentedApr. 1, 1913.

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R O T Y N E V m HARRY SWINGLEHURST 5 E 5 S E N n w BY ms AATToFeNr-:Y

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entran. sTATnsfiS'ATENT oEEieE".

HARRY swINGLEHURST, OE BOSTON, MASSACHUSETTS, ASSIGNOR To SCOTT & W11,-

LIAns, INCORPORATED, OE cAMnEN, NEW JERSEY, A CORPORATION' OE NEW JERSEY.

KNITTING-MAOHINE.

To all whom t may concern Be it known that I, HARRY' SWINGLE- HURsT, a citizen of the United States, residing in Boston, Massachusetts, have invented certain Improvements in AKnitting- Machines, of which the following Vis a speeltication.

My invention relates to circular knitting machines and has for its object the manipulationof the depressing picker bar .in 'that class of machines -which are usedfor the manufacture of 'seamless hosiery and in which a certain number of needles are rst picked out of action and then into action again informing the heels and toes of such hosiery, and my invention is applicable to a machine of the type shown in the patent of George D. Mayo, No. 726,178, dated April 21, 1903, and especially to a machine of that type in which the cylinder 'is revoluble and the cam ring stationary, as set forth in the application for patent filed by Harry Swinglehurst on the 18th day of May, 1911, Serial No. 628,055.

In the accompanying drawings-Figure l is va sectional view of sufiieient of the ma? chine to illustrate myA present invention; Fig. 2 is a similar view illustrating some Of the parts in different positions from those shown in Fig. 1; Fig. 3 is a sectional plan view of certain parts of the machine taken .on the line a-o, Fig. l, Fig. 4 is a similar sectional plan view taken on the lin'e 5 5, 5, 6 and 7 aie faceviews, in diderent positions, of those portions of the Ordinary machine which act upon the -picker and impart to it movements other thanthose imparted by the mechanism constituting the subject of my invention.

In the drawing, l represents part of the needle cylinder of the machine, 2 one of the needles mounted so as to reciprocate vertically therein, 3v a skeleton cylinder' surrounding the. needle cylinder and serving as a guide for the butts of the needles and Ll a po-st or standard-to which is universally pivoted a depressing picker 5 for engaging the butts of the needles which have been lifted out of operative position during the narrowing loperation in the formation of the toe or heel-pocket and depressing these needles intov active position again for the widening operation, whereby the formation oi' said heelor toe pocket is completed, this depressing picker 'operating inv connection with a Specification of Letters Pat-ent.

Application led June 28, 1911.

Vstem the picker 'shown in Figs. 2

Patented Apr. 1,1913. serial No. 635,575.

double cam plate 6 and a pair of sp'ring-ac-v invention relates to mechanism for raising lthe picker at the proper time from the position .shown in Figs. l and 5 to the raised position shown in Figs 2 and 6. Supposing thatJ the'picke'r occupies the raised position' shown in the latter figures it will be struckby the butt of a raised needle and carried forwardly with the latter.' vThis will cause the picker to press uponthe plate? in ad- Vance of it, Vthus causing said plate to swing downwardly on its pivot, with the effect of depressing the picker and. carrying down the butt ofthe raised needle with which said picker engages. By reason partly of the downwardly swinging movementof the plate 7 and partly of the cam-like action of -the inner face of said plate upon the picker finally reaches the position shown in'Fig. 7, and by this time vthe needle butt is freed from engagement wit-h it because of the arc of'a circle in which said needle butt travels. As soon as the-picker is thus. freed the reaction of the plate 7 causes the picker to move rearwardly and the picker stem rises on the cam 6 until it finally reaches the apex of said cam and is there' retained by being engaged between the front and rear plates 7, as shown in Fig. 5, until itis finally again lifted to the position and by themechanism which I have deviset. `The duplex character of the mechanism provides for the proper operation of the picker irrespective of the direction in which the machine is re# ciproeating. l

In the machine of the Mayo patent before referred to the needle cylinder was stationary and the cam ring had the necessary.

lrotating and reciprocating movements im parted to it in order to effect either rotary knitting for the production of the leg. and foot of the stocking or to-and-fro knitting for the production' of the heel and toe pockets. ln the. machine of 'the Swinglehurst application, however, these rotatingand reciprocating movements were imparted to the needle cylinder, the latter being carried by the gear ring 9, and the cam ring l() only f the machine is adapted a slide 12 which can be moved radially on said bed, said slide vharing a post 13 to which is pivoted a lever 14, whose upper end is adapted to act upon the stem or shank of the pivoted picker 5 and raise the same from the intermediate position shown in Fig. l to the fully elevated vposition shown in Fig. 2, said lever 14 having a projecting toe 15 which, at the proper times, is acted upon by a cam 16 mounted upon the base of the cam ring 10. Projecting upwardly from the top of* the slide 12 is a pin 17 which is lengaged by the forked end ot an arm 19 carried by the upper end of a rock shaft 20, the latter being adapted to bearings in the fixed frame 11 of the machine and having, at its lower end, another arm-21 with downwardly projecting pin 22 which enters a cam slot 23 in a'plate- 24, theV latter being carried by a ring or segment 2-5 which is mounted on the underside of the fixed frame 11 so that it may have reciproeating movement imparted to it at the proper times. Normally, that is to say during round-and-round knitting and during that portion of the to-and-ro knitting when narrowing is being performed, the parts occupy the position shown in Fig. 1, the depressing picker 5 occupying its intermediate positionso that it will not act either upon the butts of the depressed or active needles or upon those ci the raised or inactive needles. When, however, the narrowing operation has been completed and the widening operatioiris about to be started, the ring or segment 25 is reciprocated by connection with some available part of the machine so as to cause inward movement of the slide 12 and of. the lever .14 carried thereby, thereby bringing the toe' 15 of saidlever into the path of the cam 16 on the base of the cam ring 10, consequently, on each reciprocation of the latter said cam willact upon the toe 15 and will cause the lever 14 to raise the picker 5 from its intermediate or inoperative position shown in 1 to itselevated or operative position shown in Fig. 2, the picker being thereby caused to engage iii-st a needle at one end of the active set and then a needle at the other end of said active set to depress the 'same into operative position in order to effect the desired widening ot the4 web which being knitted,` or if the lift-ing pickers are permitted to remain-in action' during the widening operation the lips of the -depress- 'der the iniiuence of the lifting picker. VV'henA the widening operation has been completed and round-and-round knitting is about to be resumed the ring or segment 25 is' restored toits former position, thereby eiecting retraction of the slide 12 and withdrawal of the lever 14 to the inoperative position shown in Fig. 1. The dropping of the lever 14 after it has passed from under the influence of the cam 16 is effected by its own weight, although, if desired, a suitable spring may be employed to aid in such movement, it being desirable to remove the upper end of said leverr 14 from the path of the descending picker 5 when the latter is being depressed.

I claim:

1. The combination, yin a knitting machine of the rotary cylinder type, of a depressing picker which normally occupies an inoperative position, a lever for lifting said picker into position to engage with the butts of the elevated needles, a cam 'for actuating said lever, means for operating said cam,`

and means for moving the lever into and out of range of said cam.

2. The combination, in a knitting machine of the rotary cylinder type,l oia depressing picker which normally occupies an inoperative position, a lever for raising said picker into position to engage the butts of the elevated needles, a ring carrying the stitch cam and also provided with a cam for operating los said lever, means for reciprocating said cam ring when the direction of movement of the needle cylinder is changed vduring reciprocating knitting, and means for moving the lever into and out of range of the lever-operating cam on said ring.

3. The combination, in a knittin machine of the rotary cylinder type, of a epressing picker which normally occupies an inoperative "position, a lever for raising said picker into position to engage the butts of the elevated needles, a cam for actingon said lever,

means for actuating the cam, a slide guided A on the ixed bed of the machine, to which slide said lever is pivoted, and means for imparting inward and outward movement tosaid slide.

4. The combination, in a knitting machine of the rotary cylindertype, o f a depressing picker which normally occupies ain inoperative position, a lever for raising said picker into position to engage .the butts of the `elevated needles, a cam for acting on said lever, means tor'act'uat-ing the tam, a slidev guided 'on the fixed bed of the machine. to which 1 anA slide said lever is pivoted, and means for In testimony whereof, I have signed `my imparting inward and outward movement name to this specification, in the presencia of 10 to said slide; said means comprising a slotted two subscribing witnesses.

cam plate carried by a movable member of 5 the machine and a rock Shaft adapted to HARRY SWINGLEHURST' bearings on the xed bed of the machine and Witnesses: having two arms, one engaging said Vcam WALTER LABKIN, plate and the other engaging the slide. TRERESA F. MURPHY.

Copies o! this .patent may be obtained for ve cents each, by addressing the Commissioner o! Pnfnts,

' Washington, JJ. C.

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