US506000A - Take-up for knitting-machines - Google Patents

Description

(No Model.) 2 Sheets-Sheet 1.

J. M. BUYER. TAKE-UP FOR KNITTING MACHINES.

No. 500,000. Patented 001;. 3, 189.3.

(.No Model.) 7 2 Sheets-Sheet 2. J. M. BOYER.

vTAKE-UP FOR KNITTING MACHINES.

No. 500,000. Patented 000.13, 1 893.

UNITED STATES PATENT OFFrcE.

JOHN M. BOYER, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO THOMAS J. HOLTON, OF SAME PLACE, AND JOHN SHOEMAKER, OF NORRISTOWN,

PENNSYLVANIA.

TAK E-U P FOR KNITTING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 506,000, dated October 3, 1893.

Application filed January 28, 1893- Serial No. 460,160%. (N model.)

To all whom it may concern.-

Be it known that 1, JOHN M.'BOYER, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Take-Ups for Knitting-Machines, of which the following is a specification.

In the production of fabrics on circular ro rib knitting machines especially in that class having a revolving cylinder and stationary needle operating cams, it has been found that the common take-up fixed solidly to the machine bed, proved unsatisfactory in opera I tion owing to certain practical defects in construction, as well as in difficulties arising from variations in the sizes and qualities of yarn, changes in the pattern, differentdegrees of elasticity in the fabric produced, 850.

To accommodate the different degrees of elasticity and to prevent tearing of meshes formed by the needles through the stationary or fixed take-up, I provide a resilient and adjustable take-up, which as has been found in' my practice will not only bring the fabric, no matter how often the pattern changes from loose meshes to close or from tuck to plain, under an even tension, but which will avoid all tearing of one or the other 0 or a whole series of meshes.

My invention consists of a pair of rollers mounted in a frame held resiliently to the revolving frame ring of the take-up device of a circular knitting machine.

My invention further consists of a take-up device having a pair of rollers, geared together and operated by stationary cams, revolving pawl and ratchet wheel, and which rollers are mounted in a frame held resil- 40 iently to the revolving frame ring carrying the said take-up device.

My invention further consists of'a take-up device comprising two rollers mounted in a frame hinged to a revolving frame, and said hinged frame held resiliently in position by springs, one spring or set of springs counteracting upon the other spring or set of springs, and mechanism for operating both of the rollers; and

My invention further consists of the imapplication.

provements hereinafter more fully set forth and illustrated in the accompanying drawings, in which- Figure 1 is a perspective view of a circular knitting machine having a rotatable needle cylinder and dial and a rotatable frame, and to which my improved take-up is shown in Fig. 2 is a plan view of the lower portion of a knitting machineframe, and showing my rotatable take up device. Fig. 3 is a sectional view on the line 3-3 of Fig. 2, and Fig. .4 is an end View of the operating mechanism of my improved take-up.

Referring now to the drawings for a further description of my invention, A is the frame of the machine comprising the,legs a, bed B for the support and guidance of the rotatable take-up frame C; and the bed B for the usual needle-cylinder and dial, and the stationary cam cylinder and cam dial 1).

D are loose and fast pulleys, to transmit motion to the machine; E the pattern mechanism, while F represents the bobbin shelf, and G the winding-up roller onto which the knit goods are automatically wound.

In Fig. 1 is illustrated a knitting machine having eight yarn feeders, but my improved take-up may be applied to knitting machines having one or more yarn feeders as will be understood.

In describing now more fully myimproved take-up device, reference is had more particularly to Figs. 2 to 4 inclusive, in which E is the bed for supporting and guiding the rotatable take-up frame 0, comprising the ring O and struts O and O connecting the said ring with the revolving needle cylinder and dial B O and C are the take-up or tension rollers, which may have more or less ribbed or roughened surfaces to avoid slipping of the goods as they are delivered by the machine; these two rollers C and O are journaled in aframe H comprising the levers h, h and connecting rod h having the projections h mounted thereon for a purpose hereinafter described. This frame H is hinged at h and k to one side of the struts O and O and is resiliently supported by the springs 73 and t" pressing against the levers h and h in an upward dircction, while the springs and 7c, capable of being adjusted as to their elasticityby the thumb screws 7.; press the frame H downward around the pivot points 7L and h to counteract on the s rin s 2' and t" and to ob-.

tain a tension on theproduced knit goods,as they are taken up or fed to the winding roll G by the rollers C and G which will correspond to the changes in the pattern of the knit goods as well as to probable changes in the strength of yarn or other materials of which such knit'goods are composed.

The rollers G and C are rotated or caused to feed the produced knit goods to the winding roll G, by the following mechanism: The roller 0 is provided on its arbor c with a ratchet wheel L keyed or set screwed to the same, and the two rollers C and O are caused to revolve in unison and oppositely to each other by the gear wheels 0 fixed to the respective arbors of the rollers O and 0 Motion is imparted to these rollers by a lever 01, fulcrumed in the middle or at any desired distance from one of its ends upon the arbor c of the roller 0 and which lever receives an oscillating motion from the cam or cams b on the bed B. There are as many cams b as yarn feeders on the machine, in the present instance eight. The longer end of the lever n is provided with a roller n adapted to ride over the cams b and the other or shorter end has attached to it a pawl 02 engaging the teeth of the ratchet wheel L, whereby the latter is rotated tooth by tooth and caused to take up or feed the produced knit goods to the winding roll G.

To prevent a retrograde movement of the ratchet wheel L and rollers C and G a back pawl o is pivotally attached to the lever h and moves with the frame H.

To prevent the pawl n from turning the rollers (J and C more than is desired, an adjustable back stop m is provided to limit the backward movement of the lever 47.; a spring .9 attached at one end to the frame H and at the other end to the levern is also employed to keep this lever '22 in a position to act on the ratchet wheel L when the cams b on the bed B engage the lever. It should be remarked that the rollers C and C are rotated positively and a certain distance each time the roller 77. has passed a cam 12 on the bed B, and that the frame H is resiliently mounted on the take-up frame 0 and adapted to be very convenientlyadjusted as to the tension required on the goods produced.

Having thus described the nature and objects of my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a knitting machine a rotating needle cylinder, and a take-up device, comprising two tension rollers journaled in a frame resiliently held to a take-up frame attached to the rotating needle cylinder substantially as and for the purposes set forth.

2. In a knitting machine a rotatable needle cylinder, and a take-up device comprising two tension rollers journaled in a frame held resiliently to a take-up frame moving in unison with the rotating needle cylinder, gear wheels mounted on one end of the said tension rollers and a ratchet wheel mounted on the other end of one of the said rollers and means for imparting motion to the said rollers by cams disposed on a stationaryframe, a lever mounted on the frame bearing the rollers and a pawl on the lever to engage said ratchet wheel, substantially as and for the purposes set forth.

3. In-a knitting machine a rotary needle cylinder and take-up frame, two tension rollers mounted in a frame hinged to said takeup frame and rotating therewith, springs tending to press the tension rollers upward and adjustable springs to counteract the former springs and means for operating the said tension rollers, substantially as and for the purposes set forth.

4. In a knitting machine a rotating needle cylinder and rotating take-up, the latter comprising two tensionrollers, geared together at one end, and journaled ina yielding frame, hinged to the take-up frame, stationary cams on the bed of the machine, a ratchet Wheel on one of the tension rollers and intermediate mechanism to operate the tension rollers by the said cams, substantially as and for the purposes set forth.

5. In a knitting machine a rotating needle cylinder and a take-up frame attached to the same, two tension rollers geared together and journaled in a frame hinged to the said take up frame, springs tending to force the hinged frame upward, and adjustable springs adapted to counteract the former springs, a ratchet wheel on one of the tension rollers, and operated by a pawl on one end of a lever fulcrumed to the arbor of the tension roller which carries the ratchet wheel, a roller on the other end of the lever adapted to ride over stationary cams, a spring between the said lever and hinged frame, a back stop for said lever and a back stop for the ratchet wheel all substantially as and for the purposes set forth.

6. In a knitting machine a rotating needle cylinder and a rotating take-up frame with two tension rollers journaled in a frame hinged to the rotating take-u p frame, springs pressing on each side of the hinged frame and keeping the latter in suspension, and means for operating the tension rollers, substantially as and for the purposes set forth.

7. In a knitting machine a rotating needle cylinder and a rotating take-up frame, a set of rollers journaled to a frame hinged to the rotating take-up frame and means for operating said rollers substantially as and for the purposes set forth.

8. In a knitting machine a rotating needle cylinder and a rotating take-up frame, a set of rollers held in a yielding support, a lever and pawl for operating the same and a back IIO stop for limiting the action of said lever and pawl substantially as and for the purposes set forth.

9. In a circular knitting machine a rotating needle cylinder and a rotating take up device comprising tension rolls held in a yielding frame, a ratchet, a pawl and lever for operating said ratchet and tension rolls, a back stop for limiting the action of said ratchet lever, and means-for actuating the same sub- 10 stantiallyas and for the purposes set forth.

In witness whereof I have hereunto set my hand in the presence of two subscribing witnesses.

JOHN M. BOYER. Witnesses:

J. O.V0GAN, A. S. KLEPPINGER.

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