US245137A - Wltnesses - Google Patents

Description

(No Model.)

v 's. GONDE.

CIRCULAR KNITTING MACHINE.

Patented Alig. 2, 1881.

INVENTDFF NW. RI

WITNESSES w-w .IUNITED' sT rns PATENT OFFICE.

SWITS CONDE, OF OSWEGO, NEW YORK.

CIRCULAR-KNITTING MACHINE.

SPECIFICATION formingpart of Letters Patent No. 245,137, dated August 2, 1881.

' Application filed May 17, 1881. (No model.)

wego,in the county of .Oswego, in theState.

of New York, have invented new and useful Improvements in- Oircular-Knittin g Machines,

of which the following, taken in connection clear, and exact description.

This invention relatesto certain mechanism designed to beapplied to a-rotary knittingmachine, and by means of which said machine is adapted to knitfabricistriped as well as blocked or checkered in different colors.

In the annexed drawings, Figure 1 is a side view of my invention; Fig. 2, a plan view-of same; Fig. 3, a front view; and Figs. 4 and 5 are enlarged detail views, illustrating the effect of certain parts ofthe inech anism employed in my invention.

Similar letters ofreference indicate corresponding parts.

A represents the usual rotary needle-cylinder, carrying vertically at its periphery the bearded needles N.

L is the loop-wheel, sometimes called burr,

with the accompanying drawings, is a full,

arranged on the outside of the needle-cylinder to force into the beards of the needles the thread or yarn to be knitted. Said thread'is guided to the burr L by a bar, a, which is fixed to the side of the standard 8 and has its forward extremity in proximity to said burr, and provided with an eye, through which the thread passes on its wayito the burr. In this invention, however, two or more threads of different colors are conducted to the eye of the stationary thread-guide a by meansof twovibratory thread-guides, b b, pivoted to the side of the thread-guide a. The thread-guides b I) receive vibratory motion by two 'pitmen, d d, connected to them, respectively, and to a rockarm, 0, pivoted on a standard, 01,, secured to the table of the machine in front of the needlecylinder.

To the side of the standard at is pivoted a lever, e, the forward end of which is extended under the needle-cylinder A, and the rear end is connected with a rearward extension, i, of one of the vibratory thread-guidesby a pitman, 01'.

By means of camsff, placed at intervals on the under side of the needle-cylinder, the forward en d ofthe lever e is intermittently depressed when the cylinder is in motion. The

resultant alternate depression and elevation 0f the rear end of said lever imparts a vibratory motionto the thread-guide, withwhich it g'uide's b b are held in their respective elevatedpositions depends on the length of and distance between the .cams ff on the needlecylinder. The elevation of one thread-guide throws its thread above that oft-he other threadguide and simultaneously increases the tension of the elevated thread. The two threads are in that condition carried into the beards of the needles N by the burr L.

The previously-formed.loop of the fabric,

which, during the last-described operation, has been held below the board of the needle by the usual and well-known depressor It, is then drawn up over the outside of the beard of the needle and off the end of the same to form a new loop with the threads in the beard of the needle. In this operation said previous loop draws the lower and slack thread back of the upper an taut thread, thus presenting different colors at opposite sides of the fabric. The alternation in the movement of the vibratory thread-guides b b at certain intervals during each revolution of the needle-cylinder produces vertical stripes in the-fabric. Since the elevation of one of the vibratory thread-guides causes the respective thread thereof to predominate at one side of the fabric,it is evident that by maintaining said threadguide in its elevated position during a number of revolutions of the needle-cylindera horizontal stripe is produced in the fabric; Therefore by checking the alternation in the elevation of the two thread-guides b b after a certain number of rotations of the needle-cylinder, and maintaining one of them in its elevatedposition for the next number of revolutions of said cylinder, as-before described, the vertical stripes are broken and converted into rectangular blocks or checkers by the interspersion' of horizontal stripes. To automatically produce this effect 5 funder the needle-cylinder.

I employ, in conjunction with the before-(1e scribed devices, the following instrumentalities, viz: Near the rear end of the lever 0, I an range aratchet-wheelfiv, mounted horizontally on a post, 121, secured to the table of the machine. The upper surface of said ratchet-wheel is pro vided with a earn, 9, in the form of a semicircular raised rim extending half-way around the 'atchet-wheel, From the rear end of the lever 0 projects an arm, it, having a frictionroller by which it rests on top of the ratchetwheel 7.

On the post at is pivoted a lover, a, which is extended to the needle-cylinder A, and has its extremity in the path of a cam or projection, 7:, on the exterior of the needle-cylinder. Said lever u is held in opposition to the approach of the cam in by a suitable spring, I, pressing said lever in an opposite direction from that of the rotation of the needlc oylinder. A stop, 0, attached to tliepostm, arrests the last-described spring action ofthe lever '11 at a point to cause it to be encountered by the cam 75,

To the lever u is connected it pawhp, which engages the ratchet-wheel W at each swinging of said lever by the cam on the needle-cylinder, thus causing the ratchet-wheel to turn a certain distance at each revolution of the neodle-cylinder. This ultimately brings the cam or raised portion 9 of the ratchet-wheel under the arm h of the lever c, and raises the rear end of said lever, so as to depress'the forward end thereof snfiiciently to clear the cams The lever c is held in this position until its arm It leaves the cam g, thereby holding the vibratory threadguides Z Z) dormant during a certain number of revolutions of the needle cylindcr, and by the resultant unvaried feed of the threads or yarns producing a horizontal stripe across the fabric. As soon as the ratchet-wheel W is actuated often enough to carry its cam from under the arm h the lever 0 drops hack into the path of the cams f and resumes its intermittent oscillating motion, and thus produces the vertical stripes until the next encounter of the cam with the arm h, when the vertical stripes are again broken by the intcrspersion of horizontal stripes, and thus caused to pre sent a blocked or checkered configuration.

Having described my invention, what I claim is- The loopwheel L, the two pivoted threadguides b I), one of which has the rearward extension, 1', the pitnien d d, rock-arm c, pitinan d, pivoted lever c, said lever having one end extended under the necdlecylinder and provided at the opposite end with the arm h, the ratchet-wheel W, provided with the cam g, the spring-restrained lever it, provided with the pawl 12, and the needlecylinder A, provided with camsfand In, all combined and arranged substantially as described and shown In testimony whereof I have hereunto signed my name and affixed my seal, in the presence of two attesting witnesses, at Oswego, in the county of Oswego, in the State of New York, this 30th day of April, 1881.

swirs (Joann. [L s]

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