US68107A - Xjohn p pepper - Google Patents

Description

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N- PETERS, PHOTO-LITHOGRAPHER, WASHINGTON. D. C

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TO ALL WHOM I'l MAY CONCERN: i

Be it known that AI, JOHN PEPPER, of Lake Village, in the county of Belknap, and State of New Hampshire, have invented certain new and useful improvements in I {nitting Machines; and I do hereby declare the following to he a rfull, clean-and exact description of the same, reference being had to the accompanyingdrawings, making'a part of this specification, in which- Figure 1 represents a top plan of the machine.

Figure 2 represents an elevation thereof. e

i Figures 3 and 4 represent details of the interior mechanism mainly, with an external portion to the extreme right in section. I v i i Figure 5 represents an elevation looking towards a separate part of the machine from that shown in iig. 2.

Similar letters of reference where they occur in the several separate guresdenotelike parts in all the The object and purpose of this invention is to so construct Aa knitting machine as to make it capable ofl doingiseveral kinds of work, such as occur in knit goods, viz, plain or, common ribbed, and plaited ribbed work, and this, too, whilst the machine may continue in motion, or without rearranging the machine, And my invention consists, irst,vin a'slide or its equivalent for raising cr'lowering an interior cam, which cam when lowered keeps the needles down so low that their loops will not he cast oif, and with one thread in this condition the machine knits common ribbed work, and which cam, when raised up and another thread thrown in, causes the machine to knit plaited ribbed work. And my invention consists further in the useof a spur-wheel and pin, (or series of adjustable pins,) for throwing down a cam or its equivalent, which causes the needles to come further down, and thusmake n longer stitch and looser knitting, and which, on being raised, makes` a shorter' and tighter stitch or loop, the object being to knit the fabric tighter or looser insome places than in others, as, for instance, loose at the top of a stocking, gradually tightened up to and throughout the calf or central portion, and quite tight or close at the ankle, or for making slack courses for ribbed tops.

To enable others skilled in 4the art to make and use my invention, I will proceed to describe the same with reference to the drawings. e

Thew external appearance of my machine does not diier much from many'others now inuse. I use two series of circularly-arranged needles, viz, a horizontal revolving and radially-arranged series, a, that is proi jeeted and withdrawn as they revolve, and a vertical series, b, that does not revolve, but which is projected and withdrawn, or raised and lowered, as will he hereafter explained.

The parts A of the machine are stationary, whilst the portion B is moved or revolved there-on by a spurE wheel or pinion gearing into the circular rack G on the moving portion. On the perimeter of the moving por tion B there is attached a slide, c, by means of set-screws d passing through horizontally-formed slots e, which control the extent of movement of said slide. There is also cut or formed in the slide c an inclined slot, f, into which apin, g, fastened in an interior pivoted`switch, 7L, (iig. 3,) projects, so that as the external slide e is moved, so will be correspondingly moved the internal switch L, which changes the cam-way or groove 1f on the perimeter of the interior cylinder D, and correspondingly changes the raising or lowering of the needles which nre `governed in `their movement by said cam-path or groove z' at that point. The object in raising and lowering the needles by raising and lowering the switch orcam-way has been stated, viz, to change the machine to plaited ribbed work or to common ribbed work, as may be-desired. There are two threadguides,jle,I when knitting common ribbed work one thread only is used,'when knitting plaited ribbed work a second thread is 'thrown in, andltvhen ltwo threads are used of diil'erent colors they will form longitudinal ribs of different colors. On the moving portion B there is arranged a vertical shaft, Z, having at its lower portion a. series of radial pins,

ni, and on its upper portion a wormfgear, it, that takes into a worm-wheel, o, on a horizontal shaft, p, g. 4: 0n the shaftp there is a cam, r, that bears upon a stud, g, attached to a vertically sliding cam or switch, s, also attached to the interior cylinder D, (see figs. 3 and 4,) and a spring, t, under the stud g, keeps the latter up against the cam r. Onthe stationary part of the frameA. there is a series of holes, u, into one or more of which a pin,'. `v, may be placed, so that at every revolution of the revolving portion ofthe machine one of the' pins m will strike the stationary pin if and give the shaft Z a partial rotation, and the shaft, through its worm# gear, moves the camr and sliding-switch s, thus drawing down or moving' 'up the needles, as may be desired in knitting loose or tight work. If more than one pin i; be used, more motion will be given to the cam and to the switch vs; if none are used,then the parts will remain in one fixed position. The pins may bc inserted or taken out as the machine is in motion, or increased or diminished in number, thu's graduating the tightness or looseness of the knit fabric at pleasure. i

What I claim as my invention, and desire to secure by Letters Patent, is, {irstl In combination with an interior pivoted com or4 switch, a slide, or its mechanical-equivalent, for raising o1' lowering said cam or switch, and thus changing the cam-groove and lowering or raising the needles, for changing the machine from common ribbed to plaited ribbed work, or vice versa, substantially as described.

I also claim the revolving pin-Wheel m, in combination with a. stationary pin or pins, for the purpose' of moving an interior cam or switch, and changing the traverse of the'needles at that point, for changing the machine from tighter to looser knitting, or rice versa, .substantially as herein described.

l l JOHN PEPPER.

Witnesses:

A. B. S'roUGHToN, EDM. F. BROWN.

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