US179088A - Improvement in needle bars and cylinders of knitting-machines - Google Patents

Description

W. H. ABEL.

NEEDLE-BARS AND CYLINDERS 0F KNITTING-MACHINES. N-o.179.088. P ten ed June 27,1876.

Fig.1.

. cylinder for knitting ing its fillets or ribs made of separate pieces of WILLIAM H. ABEL, OF BRIDGEWATER, NEW HAMPSHIRE.

IMPROVEMENT l N NEEDLE BARS AND CYLINDERS 0F KNITTING-MACHINES.

Specification forming part of Letters Patent No.

March To all whom it may concern Be it known that I, WILLIAM H. ABEL, of Bridgewater, in the county of Grafton and State of New Hampshire, have invented certain Improvements in a Needle Bar or Cylinder for Knitting-Machines, of which the following is a specification:

My invention relates to a new needle bar or looms or machines, havmetal, which are afterward secured to the bar or cylinder, (instead of forming such fillets or ribs from the bar or cylinder by milling between them, as is now done,) by which I obtain-a much more uniform and smoother channel for the needles, and one which will wear much longer, and by the use of which much better fabrics are made.

The fillets or ribs can be easily replaced in case of injury or wear of any of them, thereby saving expense of a new needle bar or cylinder in many instances.

Figure 1 shows a portion of one of my new needle-bars, having fillets or ribs secured therein, with knitting-needles between them. Fig. 2 shows a portion of a needle-bar with grooves or channels for the needles out therein, as was commonly done prior to my invention.

The ordinary way of making needle bars or cylinders prior to my invention was to cut or mill out the channels for the needles. To make in this way a perfect bar or cylinder was a very difficult task. Some portions would often be harder than others, causing vibration or variation in the path of the tool in cutting the channels, and a corresponding irregularity in the sides or bottoms of the channels would result therefrom. Not many channels could be out without sharpening or replacing the tool, which is not always brought to the same gage or position on resuming its workagain, creating differences in the channels. The sides and bottoms of the channels are always left more or less rough, and of varying widths and depths, and therefore needles working in such channels cannot always produce good results on ordinary work, and on many kinds of goods, and on some special looms, work so imperfectly as to render valueless the loom and product. The ribs or fillets of such bars or cylinders often become injured or worn, and, if repaired at all, such repairing bar or cylinder,

179,088, dated June 27, 1876 application filed is often attended with much trouble and expense.

My new needle bar or' cylinder overcomes all these objections, and possesses many additional and newrpoints of merit.

In the drawings, Fig.1, A representsa section of the bar or cylinder, having its surface on which the needles are to work well prepared by bringing it to the proper and uniform degree of evenness and smoothness. After this surface is so prepared as to make a perfect line or circle, as the case may be, for the needles to work on, grooves or channels are cut for the reception of the metal fillets or ribs D. These fillets or ribs are first made of uniform and proper shape, and finished smooth.

the bar or cylinder is by cutting the lower ends of the ribs at an angle, as shown in the drawings, and fitting a bar or segment to the with that part covering the ends of the ribs orfillets so shaped as to fit the angle given to the ends of them, and securing the segment to the bar or cylinder with screws. This would form a semi dovetail joint at these ends of the fillets, as shown at G in Fig.1 of the drawings. A portion of the upper edges of the other ends of the fillets are cut away to form a shoulder, as shown in fillet D, where a portion of the cap B is cut away in the drawings. This cap B is fitted over that portion of the fillets cut away, and rests against the shoulder formed in the fillets, and is fastened to the body A by screws. This cap B and bar or segment 0 secure the fillets or ribs firmly in their proper positions.

By this construction and arrangement I produce a needle bar or cylinder much more perfect in construction, more durable, more readily and easily repaired in case of accident or wear, and such as will produce greater aecuraoy of operation and production, than that in ordinary use.

I claim as my inventionhaving independently .and separately concured thereto, for the purposes stated.

WM. H. ABEL. Witnesses:

NAT. J. EDGERLY, LUGIAN GALE.

A convenient way of securing the fillets in A needle bar or cylinder for knitting-looms structed fillets or ribs, which are rigidly se-

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