US664273A - Yarn-guide for knitting-machines. - Google Patents

Description

N0.'664, 273 4 Patented Dec. l8, I900. H. I. uomas.

YARN GUIDE FOR KNITTING MACHINES.

- (Application filed .m 11, 1960. v (N0 M BL) {Sheets-Sheet I.

. Attorneyfi .No. 664,213. Patented Dec. l8,'l900.

. H; l. JONES. I

YARN GUIDE FOR KNITTING MACHINES (Application filed July 11, 1900.) (No Model.) 2 Sheets-Shad 2'.

Witnesses. I Invent or.

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w Attorney;

UNITED STATES ATENT QFFICE.

HERBERT I. JONES, OF RIVERSIDE, RHODE ISLAND, ASSIGNOR OF ONE-HALF TO TIMOTHY T. MORRISEY, OF PROVIDENCE, RHODE ISLAND.

YARN -GUIDE FOR KNITTING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 664,273, dated December 18, 1900.

Application filed July 11, 1900.

T0 at whom it may concern:

Be it known that I, HERBERT I. J onus, a resident of Riverside, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Yarn-Guides for Knitting-Machines; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specifica--- tion.

This invention relates to the mechanism used to operate the yarn-guides in feeding the yarn to knitting-machines in which two or more yarns are used at different times in the same fabric.

The object of the invention is to provide an arrangement of the devices that shall secure a'greater certainty of operation and a construction and combination of the moving parts that will be more durable and capable of running at a higher rate of speed without increasing the cost of construction and operation. It is fully explained and illustrated in this specification and the annexed drawings.

Figure 1 represents a rear elevation of machine, showing the mechanism connecting the main shafts with the yarn-changing devices. Fig. 2 shows a top view of yarn feeding and changing mechanism. Fig. 3 represents an elevation of the side toward the observer in Fig. 2. Fig. i represents a vertical section of the yarn-guiding mechanism, taken on line 4 4 in Fig. 2.

The construction and operation of -t-he invention are as follows:

In Fig. 1, A represents the plate or top of the frame, on which stands the knitting-head.-

B is the latch-guard, that stands partially around the needles. (Notshown) Theyarnguides and the changing devices are held mainly on plate M, to the front edge of which the latch guard B is attached. The stands E E E project up from the top of the plate M and furnish bearings for the shaft K, the supports J J, and the yarn-guides D D. Three more like stands S S S are placed a little farther in to help hold the yarn-guides in place. The yarn-guides D D areslotted at their outer ends, through which slots or forks the shaft serial No. 28,240. (No model.)

K passes, so that the guides can slide in and out, and also rise up and down at their ends, being moved by the arms J J, which are also pivoted at their rear ends on the outer ends of the shaft K. The arms J J are raised by inclines or cams e 6, held on a bar d, fitted to slide closely between the studs E and the studs S S. The arms J raise the guides D D by means of the pins cc, which are screwed into the guides, so as to be firm and not liable to work loose. A vertical plate H is placed between each guide and its arm and made fast to the plate M. Each plate H has a slot a in it, inclined at the top toward the guard B, (see Fig. 3,) through which slots the pins ad, that connect each arm and its guide, pass, and as the arms are raised by the cams e the pins on a are moved inward toward the guard B, carrying with them the guides D D, in which those pins are made fast. A spiral spring I) is held on a pin m, fast in the top of the center stand E between the guides D, and one end of this spring b bears on a pin tin the hub of either arm J. This spring is free to turn on the pin m and holds both arms J down, and when one arm is raised the coil of the spring on the pin m is turnedand an increased pressure is put on the pin tin the other arm, and it is prevented from being carried up by friction between the two guides D. The slide d, with the cams e 6, receives a sliding motion back and forth under the arms J J and guides D D from a crank-arm F, fast on a short vertical shaft G, held in a bearing in a projecting arm of the plate M. A link it connects the outer end of the crank F with a stud in the end of the slide 01, and a wheel 0, with curved prongs, is made fast on the lower end of the shaft G and so placed as to have the prongs catch on pins P P in a curved plate W when the wheel 0 passes them, if the plate is raised. The plate W has two so pporting-rods N N made fast in it, one at each end, (see Fig. 1,) which rods slide up and down in the hol- 5 low supports L L, made fast on the bed-plate.

The curved plate W is moved up to cause the pins P P to intercept the prongs of the wheel 0 by a cam P, held on a side shaft of the machine, which operates through a lever s, piv- I00 oted near its middle to the machine-frame and having one end bearing on the cam P and its other end connected to one end of a lever 0*, also pivoted to the frame, and on the other end of which an adj usting-screwo, that screws into the lower end of one of the rods N, rests and supports the plate W. A spiral spring 1' has one end made fast to the lever 0 under the screw oand its other end attached to the frame to keep the end of lever 3 down on the cam P.

The object in having two guides for the yarn is for the purpose of using two yarns of different colors or sizes in the machine and changing from one to the other automatically without stopping the machine. In Fig. 3 it is represented as having the guide D raised and the guide D down and feeding its yarn to the needles. (Not shown.) To change to the yarn in the guide D, which may be supposed to be a coarser yarn for knitting the heel of a stocking, in which case the blocks jj on the cam P are set so that after having knit to the proper length with the yarn in the guide D the end of the lever s will be raised by one of the blocks j, which by means of the lever r and rod N (see Fig. 1) will raise the plate \V, so that as the plate M, with its mechanism, revolves around the needles the wheel Will strike one of its teeth against the pin P and turn the shaft and crank-arm a quarter-turn from its dead-center, so that both guides will be down and both yarns will be fed to the needles for a short distance, when the wheel C will have reached the pin P and caught another tooth on that pin and turned the crank-arm onto one of its deadcenters and drawn the cam under the arm near the guide D and raised that arm and guide D from the needles. When the heel is knit, a second block j is placed ata properdistance on the cam P from the first block and will raise the lever s and the plate WV, so that when the wheel O passes it Will be turned two quarter-turns and the crank F will be on the other center and will have moved the cams, letting down the guide D and raising the guide D, as at the start.

Having thus described my improvements, I claim as my invention and desire to secure by Letters Patent- 1. In a yarn-changing feed mechanism for knitting-machines, the combination of two guides, a shaft to support the back ends of the guides, two arms held on said shaft, one outside each guide, a slotted plate placed between each guide and its arm, a pin fast in each guide and extending through its slotted plate and a slot in the inner end of its arm, substantially as described.

2. In a knitting-machine the combination of a shaft, two guides held on said shaft, an arm on the shaft outside of each guide, a slotted plate held between each arm and its guide, a pin fast in each guide and extending out through its slotted plate and a slot in its arm, a bar arranged to slide under the guides and arms, cams on said bar, with means for sliding said bar back and forth, substantially as described.

3. In a knitting-machine the combination of a shaft, two guides held on said shaft, an arm on the shaft outside of each guide, a slotted plate held between each arm and its guide, a pin fast in each guide and extending out through its slotted plate and a slot in its arm, a spring held in a stationary pin between the two guides and having one end bearing on a pin in the hub of one of the arms and its otherend bearing on a pin in the hub of the other arm, substantially as described.

47. In a knitting-machine the combination ofa shaft,two guides held on said shaft,an arm on the shaft outside each guide, a slotted plate held between each arm and its guide, a pin fast in each guide and extending out through its slotted plate and a slot in its arm, a earn-bar arranged to slide under the guides and arms, a vertical shaft with a crank on its upper end and a toothed wheel on its lower end, a plate with pins to catch and operate said toothed wheel, a rod fast in said plate, a setting-screw in the lower end of the rod, a lever pivoted on the frame, to receive the setting-screw on one end, a second lever pivoted on the frame, a rod connecting the free ends of the levers, a cam to operate said second lever, substantially as described.

In testimony whereof I have hereunto set my hand this 10th day of July, A. D. 1900.

HERBERT I. JONES.

In presence of BENJ. ARNOLD, EDGAR S. MARSH.

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