US83390A - Improvement in knitting-machines - Google Patents

Description

UNITED STATES PATENT OEEIcE.

DANIEL KIDDER, OF FRANKLIN, NEV HAMPSHIRE.

IMPROVEMENT IN KNlTTING-MACHINES.

Specification forming part of Letters Patent No. 83,390, dated October 27, 1868.

To all whom it may concern.'

Be it known that I, DANIEL KIDDER, ot' Franklin, in the county of Merrimack and State of New Hampshire, have invented a certain new and `useful Improvement in Knittin g-Machines, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, which make part of this specification, and in which- Figure l represents a View, partly in plan and partly in horizontal section, at the line :v w of Fig. 2, of a rotary knitting-machine havingmy improvement applied; Fig. 2, a side elevation of the same; and Fig. 3, a-view in elevation, and on an enlarged scale, of one of the needles detached.

The object of my invention is to provide a convenient means of attaching the elevating and depressing cams which actuate the needles, and the yarn-feed which supplies the yarn thereto; to which end my improvement consists in the provision of a detachable stock, of suitable form, to which said parts are secured, by which means the construction of the machine is simplified and the cams rendered readily removable, when desired, for purposes of renewal or repair. Y

' In the accompanying drawings, which show a convenient arrangement of parts for carrying out the objects of my invention, A represents the bed or frame of the machine, to which ahollow stationary needle-cylinder, B, is firmly secured.

rllhe machine can be fastened upon a frame or table by means of the set-screw a, working in a boss, A', which forms part of the bed, or it can be attached to a post or bearing by other suitable means.

A series of vertical grooves, b b, is formed around the periphery of the needle-cylinder, in which the needles bl are placed. The needles are bent at right angles, so as to present butts b2 to the-action of the cams, and are provided with pivoted latches b3.

A cam-cylinder, C, rotates around the needle-cylinder, being maintained in proper vertical position by guides C1, which are secured to the bed A, and enter a horizontal groove, c, in the periphery of the cam-cylinder. Ihe cam-cylinder receives its motion from a bevel-wheel, H, mounted in bearings on the lower part of the bed A, rotated by a crank,

I, and gearing with teeth C2, cut upon the v/ lower portion of the cam-cylinder. f'

The butts b2 of the needles rest upon the top of the cam-cylinder, and when they are struck by the cams the needles are elevated and depressed in proper manner for forming the stitches.

An angular stock, D, having its upper edges inclined at a suitable angle for the reception of the cams which actuate the needles, is secured upon the upper portion of the periphery ofthe cam-cylinder C by a screw, or in other convenient manner, justin advance of a curved recess or depression, C3, which is made in the top of the same.

F represents the elevating-cam, which is sen cured upon the upper leading surface of the stock D, and E, the depressing-cam,-secured upon its upper rear surface. This camis held in position by the screw e, passing through a slot, e', by which means it can be raised or lowered upon the casting D, to more or less lengthen or shorten the stitch, as desired, for various kinds of work.

Gr represents the yarn-feeder, which is secured upon the outside of the stock D at its leading edge, being bent inward above the cams, and provided with a hole, g, near its top, through which yarn is supplied to the needles.

The cam-cylinder C being putin revolution by means of the crank I and bevel-wheel H, the inclined elevating-cam F strikes the butts b2 of the needles, and raises them in proper manner for foi-min g the stitch, yarn being sn`p plied to the needles through the hole g in the yarn-feeder G.

When the needles have been passed by the cam F, and consequently elevated to its top, their butts b2 are struck in succession by the lower surface of the cam E, and depressed into the recess C2 a sucient distance to form the desired length of stitch, the rise in the surface elevating them from said recess, and thus relieving the strain on the yarn and fabric.

My improvement adapts the cams E and F and yarn-feed G to be more readily gotten at for adjustment, &c., by the removal of the 2. The yarn-feeder G, elevating-cam F, and stock D with said parts attached thereto. It slotted depressing-cam E, secured to the stock also greatly facilitates the building of the ma- D, substantially as and for the purpose deehine. scribed.

Having thus fully described my invention, what I claim asvnew therein, and desire to se- DANIEL KlDDER. cure by Letters Patent, is-

l. The detachable stock D, adapted and \Vitnesses: employed for the reception of the cams and WALTER AIKEN, yarn-feeder, substantially as set forth. PARKER C. HANCOCK.

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