US1864112A - Lace-clock mechanism for full-fashioned knitting machines - Google Patents

Description

June 21, zw c I Ills-1.- I

LACE CLOCK MECHANISM FOR FULL FASHIONED KNITTING MACHINES Filed June 20; 1930 I col gI IE m E I' in I m E [U [h v H Fla- SJ I 1 INVENTOR:

' [)ToZchior Zwi 0139',

BY WM ATTORNEYS.

Patented June 21, 1932 UNITED STATES.

PATENT. OFFICE Q I MELCHIOB ZWICKY, OF, BERKSHIRE HEIGHTS, PENNSYLVANIA, ASSIGNOR '10 TEXTILE momma woaxs, or wrolussnm, vama A PENNSYLVANIA, A CORPORATION 01 PENNSYL LACE-CLOCK KI ECHANISI FOB FULL-FASHIONED KNITTING MACHINES Application fled June 20, 1980. Serial No. 462,495.

My invention relates to improvements in lace clocking mechanisms of the type used on straight or full fashioned knitting machines.

As well known, lace clocking mechanisms of this type essentially comprise a plurality of point rods and pattern controlled shiftin means therefor.

eretofore, the ends of the point rods have been contactingly held against an actuating member or shifting plate by either short helical compression sprmgs mounted directly on the rods, or comparatively long tension springs attached to the sides of the latter.

The spring action obtained in this manner has been found unsatisfactor in the first instance because it was too sti and variable, causing excessive wear between the rods ends and actuating plate, and owing to the necessity of removing the rods in case of spring breakage; and in the second instance because of undesirable sidewise pull exerted against the rods.

The primary object ofmy invention is to provide novel and simple means overcomin such faulty spring action on the rods, and accomplish this by the use of a movable member for each rod adapted to kee the latter constantly in contact with the shi in means, and actuating means for said movab e memers.

The invention comprises the novel elements features of construction and arrangement of parts in cooperative relationship as fully disclosed by' the following detailed description and accompanying drawing of one embodiment thereof, reference to which will make the above and other objects, as well as attendant advantages, more readily apparent.

Referring to the drawing:

Fig. 1 is a fragmentary front elevational view of the point rods, and associated parts of a lace clocking attachment for full fashioned knitting machines, and shows my in- I vention applied thereto.

Fig. 2 1s a' fra mentary plan view of the ri%ht hand end 0 Fig. 1.

ig. 3 is a sectionalwiew taken substantially as indicated by the arrows 3-3 on 'The point rods 4, 5. and 6 are provided with the usual and varied number of points P which cooperate with the needles in producing the lace clocks, and are mounted for reciprocatory movement in well known manner; their adjustable ends 4a, 5a, and 6a abut- 3:1

ting the common rod actuating plate 7 which is moved by pattern controlled shifting mechanism, not shown. a

A bracket or mounting 8 is fixed to the front narrowing shaft 9 of the machine, as

shown, which is adapted to carry presser elements or levers 10, 11 and 12. These levers have integrally formed abutment parts or enlargements 10a, 11a and 12a at their lower ends, which are normally in contact with and press against the rounded adjustable tips 13, 14 and 15 of the point rods 4, 5 and 6 respecnarrowing shaft 9 of the machine."

The power or pull applied to the upper ends of the levers by the s rings, is multiplied and transmitted by t e levers to the point rods in the form of pressure exerted axially thereof. This pressure is substantially uniform owing to the long actuating springs, and can be varied within wide limits, by either the substitution of other springs, or by providing adjusting means such as indicated at 25.

It will be noted that the pressure on the point rods 4, 5 and 6 remains constant when they are turned for the purpose of moving the points P to and from their lower or active osition and into or out of operative relation with the needles, in the well known manner, owing to the contacting connection between therod ends 13, 14 and 15 and the presser lever enlargements 10a, 11a and 12a.

- tively. Lever 10 is pivoted on a pin 16, fixed 20, 21 and 22 are connected;

and adapted for other similar purposeswithout departing from the invention herein set forth and hereinafter claimed.

I claim' 1. In combination with a full fashioned knitting machine having a lace-point-rod shifting plate, a rockable lace-clock mechanism comprising a narrowing shaft having spaced brackets thereon supporting respectively, first, a plurality of longitudinally movable lace-point rods, second, a plurality of operating levers for the respective rods, and third, a plurality of tensioning springs for the respective levers, each of said tensioned levers acting axially against an end of its respective rod to maintain its opposite rod end in contact with said shifting plate.

2. In combination with a full-fashioned knitting machine having a lace-point-rod I all shifting plate, a rockable lace-clock mecha-,

nism comprising, a narrowing shaft, a plurality of point-rod supporting brackets, a lever-mounting bracket, and a spring-attaching arm. all carried by said narrowing shaft,

a plurality'of longitudinally movable lacepoint-rods separately mounted in said supporting brackets, .a plurality of levers, one for each rod, intermediately pivoted in said lever-mounting bracket, and a plurality of springs, one for each lever, connecting ends of the levers to said attaching arm, said springs acting individually to axially engage each opposite lever end with an end of its respective point-rod to longitudinally move the latter so as to maintain its opposite rodend in contact with said shifting plate.

In testimony whereof I affix my signature.

'MELCHIOR ZWICKY.

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