US325815A

US325815A - Machines

Info

Publication number: US325815A
Authority: US
Publication date: 1885-09-08
Anticipated expiration: 1902-09-08

Description

` upper arm of the removable standard. `|The`v` T 0 @ZZ whom it may concern:

Ens, a citizen of the United States of America,

UNITED STATES PATENT OFFICE. l

ALPHONSO H. BROTHERS, OF NAUGATUCK, CONNECTICUT, ASSIGNOR TO THE DUNHAM HOSIERY COMPANY, OF SAME PLACE.

NEEDLE-PRESSER FOR KNITTINGflVIACHINES.

SPECIFICATION forming part of Letters Patent No. 325,815, dated September 8, 1885. Applicatie; sind July :10. isst (No model.)

Be it known that I, ALrHoN-so' H. BROTH- residing at Naugatuck, in the county of New Haven, in the State of'Connecticut, have invented certain new and useful Improvements in N eedle-Pressers for Knitting-Machines, of which the following is a specification.

My invention has relation to pressers for circular-knitting machines, and is especially adapted to that class of knitting machines equipped with what are known as spring or barbed7 needles. Y

My invention is fully described hereinafter, and the novelty specifically pointed out in the claims hereto.

In the accompanying drawings, forming a part of this specification. and illustrative of my improvements, Figure 1 is aperspective view of a portion of a spring-needle-cylinder knittingmachine, showing the device arranged in operative position. Fig. 2 is a perspective view of the presser, and Fig. 3 is a vertical central sectional view of the device and connections.

The letter A designates a section of needles secured to a rotary needlecylinder of a circular-knitting machine.

The letter B designates the presser post, which consists of a hollow standard formed on or iixed to the bottom plate sustaining the presser, and is provided with a set-screw, a.

The letter C designates a removable standard formed with a circular collar, b, about midway of its length, thelower part, o, being made to iit the bore ofthe presser-post B, and the upper-part, d, is made to iit the bore of the sleeve of the presser. rl'he collar b may be set on the rim of the top of the hollow presserpost, and its upper surface serves as a. seat for the presser. The top of the removable standard C is perforated, as shown, to admit the insertion of a key-bolt, whereby the presser is secured against vertical displacement.

' The letter D designates the presser, formed with a plate, e, which extends inward toward the needles, and is provided with a vertical sleeve, f, the bore of which accurately ts the upper face of the presser-plate for a distance from its edge is cut down, formingashpuldered flush with or projecting beyond the inner,v

edge of the base-plate. The impacting or irnpressing edge of the facingplate C is formed concave to set against the barbs of the needles, and the curvature is made very slightly ec centric to the circle of the face-line of the needles, so that the pressure shall gradually increase from the point of contact t'o the point of discharge.

The facing plate E is made of rawhide, leatheroid, Celluloid, or vulcanized rubber, or like material of sufficient consistency and .wearing quality to meet the strain and wear to which the part may be subjected, the object being to provide a presser which will take and hold a lubricant and at the same time effect the end without presenting such rigidity as to wear the needles away. The facing-plate being made detachable, it may be replaced when Worn without other expense or trouble than the cost of the new facing and the adjustment of it to its seat.

The presser is arranged on the post or standard, as hereinbefore mentioned, with the concave edge arranged to press against the needles with increasing force from the point at which they are first engaged until they pass from contact with it, the effect being to hold the yarn under the` beards from 'the time it is placed there by the loop-wheel and insuring perfect uniformity in thelength of the stitches.

The parts are set in operative combination by placing the removable standard in the presser-post and then slipping the sleeve of the presser over the extended part of the standard and securing it by the key through the hole in the top of the standard. 'The vertical adjustment is iixed by means of the setscrew in the presser-post, and the presserautomatically adj usts itself to the face of the needles and in the manner stated by means of being pivotally disposedupon `the removable standard,` and having its impressing-edge formed to give"gradually-increasing pressure, as heretofore stated.

I OO

I am aware that a metallic presser having a concave elongated needle-impressing edge has heretofore been made and that adetachable glass presser has been patented. I am also aware that arotary presserhas been made consisting ofa ring of rawhide or sim ilar material secured between metallic disks, with the edge of the rawhide ring projecting beyond the edges of the disks, and arranged with its edge approaching a vertical direction.

My improvements consist in the substitution of a detachable unpliant non -metallic presser, having the quality ot' taking up and holding alubricant, and ot' a novel conforma.- tion, being concaved on its impressingedge eccentric to the circle of the face-line of the needles, and arranged in relation thereto to impress the needles with increasing force from the point of engagement to the point of discharge.

What I claim as my invention, and desire to secure by Letters Patent, is-

l. The combination ofthe needle-cylinder, needles, the presser-post, and the removable standard, with the horizontal base-plate formed with a vertical sleeve to [it over the removable standard, and the nnpliant non-metallic and absorbent presser-plate horizontally secured on the base-plate with its needle-impressing edge projected beyond the inner edge of the baseplate and slightly concaved eccentric to the circle of the face-line of the needles to iinpress the needles With increasing pressure from the point of engagement to the point of discharge, substantially as described.

2. In combination, the presser-post B, the removable standard C, formed with an annular collar, b, the presser D, formed with the vertical sleeve f and horizontal plate e, having a seat, G, and the unpliant, non-metallic, and absorbent presser-plate E, secured to the horizontal plate, substantially as described.

3. In combination, the presser-post B, the removable standard @the presser D, formed with a vertical sleeve, f, and horizontal plate e, and the presserplate secured on the horizontal plate, substantially as described.

In testimony whereof I havel hereunto subscribed my name in the presence of two attesting witnesses.

A LPHONSO H. BROTHERS.

Attest H. G. BALDWIN, JAMES E. SWEENEY.