US1500968A - Pusher for knitting machines - Google Patents

Description

G. c. Tl sci-l PUSHER FOR KNITTING MACHINES Filed Ma w, 192s 2 Sheets-Sheet 2 GEORGE c. L. 'IISCI-I, 0F ELIZABETH, NEW JERSEY, ,AS'SIG-NQR TO. TISGH. MACHINE-DIE worms, or ELIZABETH, NEW JERSEY, A GQRBQIR-ATIQN QE-EEW JERSEY;

IPU'SHER FOR KNITTING MACHINES.

Application filed May 19, 1923.

To all whom it may concern Be it known that I, GEORGE C. L. TIscH, a citizen of the United States, and a resident of Elizabeth, in the county of Union and State of New Jersey, have invented a new and Improved Pusher for Knitting Machines, of which the following is a full, clear, and exact description.

This invention relates to knitting machines and particularly to an improved pusher therefore and has for an object to provide a pusher foot and associated mechanism which will act to cause the pins to be pushed more steadily and to thereby cause them to accurately function.

Another object of the invention is to provide a pusher structure for what are commonly called flat or similar knitting ma chines wherein the pusher foot is arranged to cause the pin operated thereby to more accurately move in its prescribed path.

In the accompanying drawings Figure 1 is a fragmentary front view of one side of a Tisch knitting machine, with an embodiment of the invention applied thereto.

Figure 2 is a side view of the structure shown in Figure 1, illustrating the relative position of the pusher in respect to the jacquard links and pins.

Figure 3 is a perspective view of the pusher foot shown in Figure 2.

Figure 4 is a diagram showing the movementand action of the pusher footin respect to one of the jacquard pins.

Referring to the accompanying drawings by numeral, 1 indicates the frame of a knitting machine which is of the flat type and which is known on the market as a Tisch knitting machine shown more or less in detail in Patent No. 457,265. This machine is provided with a plurality of jacquard links 2 and each link is provided with a plurality of pins 3. These pins are adapted to be pushed over and in turn shift the needle bars whereby different designs may be knit. The construction just described is old and well known and forms no part of the invention except in combination.

Associated with the pins 3 is a pusher lever 4 pivotally mounted at 5 on a suitable bracket 6. A link structure 7 is provided for swinging the lever 4 back and forth a predetermined distance on each movement. The mechanism 7 ,lever 4 and Serial No. 640,148.

associated parts are old and well known and driven in a well known manner. Mounted upon the lever 4 is a pusher foot 8 which acts against the pin 3 and in combination with the parts above described, presents a new construction for shifting the pins. The pusher foot 8 is also provided with a new construction of face 9 which is concave and the parts are so arranged with the concave face 9 as to cause the center thereof to engage the end of pin 3 when the lever 4 has moved for about onefourth its travel toward the frame 1.

As indicated in Figure 4, when the pusher foot 8 strikes the pin 3, the end of the pin will strike the concave face 9 above a central line. As the parts move to the point 10, the shoe will slide relative to the pin until the end of the pin engages the center of the shoe when it reaches the position 10, as shown in Figure 4. As the shoe continues to move to positions 11, 12 and 13, the shoe will move relative to the pin as indicated. When the shoe 8 first strikes the pin and moves toward the position 10, it will tend to crowd the pin downwardly and cause the jacquard link carrying the pin to more snugly fit the sprocket wheel 14 so that the parts will be more accurately aligned and thereby the pin will more accurately engage the thread bar which it is to move. WVhere the parts have been somewhat worn, this pressure on the pin to cause the same to hug the sprocket wheel 14 is very desirable as it results in a proper alignment of the parts automatically. The downward pressure on the pin 3 produces a tension on the jacquard link or the jacquard chain. structure and by reason of this, the slight movement caused by this tension, causes the link to settle more accurately on the chain, and consequently, causes the pin to be more accurately moved as the machine operates.

What I claim is 1. In a knitting machine provided with thread bar shifting pins, a pusher lever, and a foot carried by the lever for shifting said pins, said foot being formed with a concave face.

2. The combination with a knitting ma chine provided with thread operating pins,

and a pusher mechanism associated there-- with, of a pusher shoe carried by the pusher mechanism, said shoe being formed with a face adapted to engage said pins so as to the pressure on the pins.

" bar shifting pins a pusher foot provided pins.

cause the pins and parts associated theretance on each side of the flange along one with to become accurately aligned through edge of the flange, sald body having an arcshaped conczn e face and means for forcing 1 3.In a knitting machlne provided with said face agalnst sald pins for shlfting the with a flange for receiving securing means,

it body extending substantielly an equal dis- GEORGE G. L. TISGH.

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