US1758079A - Needle cylinder for circular-knitting machines - Google Patents
Needle cylinder for circular-knitting machines Download PDFInfo
- Publication number
- US1758079A US1758079A US369045A US36904529A US1758079A US 1758079 A US1758079 A US 1758079A US 369045 A US369045 A US 369045A US 36904529 A US36904529 A US 36904529A US 1758079 A US1758079 A US 1758079A
- Authority
- US
- United States
- Prior art keywords
- needle
- groove
- needles
- cylinder
- needle cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
- D04B15/14—Needle cylinders
Definitions
- My invention relates to knitting machines whose needle cylinders carry independent needles and which are provided with means for selectively moving inward the thread receiving ends of selected needles.
- Machines equipped with such deflectable needles are used in the knitting of plated figured hosiery, certain needles being deflected to effect reverse plating.
- Such deflectable needles may also be used, in the production of figured fabric, to cause selected needles to engage or miss a yarn.
- pattern mechanism is used to selectively deflect predetermined needles in predetermined courses in order to knit a fabric having predetermined figures or designs other than a mere stripe. Topermit a needle to be deflected inward, the upper part of the needle groove is made of greater than normal depth and the upper part of the needle is unsupported in a radial direction, being spaced from the upright base of the groove. Flying particles of lint, dust, dirt, etc., lodge in the groove back of the upper part of the needle. The frequent lateral and vertical manipulations of the needle tends to dislodge these particles and prevent any accumulation to an extent which seriously obstructs deflection of the needles. In the case, however, of
- the object of the invention is to provide a Serial No. 369,045.
- the object is to so construct the needle cylinder that all particles that enter the groove can and will readily escape therefrom,
- the escape being facilitated by the up and y of uniform depth throughout that part thereof intended to accommodate all except the upper part of the needle; that is, the base of the groove, except its upper part, is a uniform distance from the center of the needle cylinder, forming a smooth vertical seat against which the inner edge of the needle rests and slides.
- the upper part of the groove is of greater t-han normal depth; that is, its base is closer to the center of the cylinder than the base of the major part of the groove.
- a shoulder rela tively near to, but substantially below, the upper end of the groove, and the outer edge c of this shoulder acts as a fulcrum when the upper end of the needle is pushed in by its actuating presser.
- the groove shall deepen gradually, rather than abrupt-ly, by slanting the base of the groove inwardly and obliquely for a greater or smaller distance and then extending the base of the groove vertically upward to its open upper end, as shown in the drawing; but this is one of the details thatis susceptible of variation.
- the cylinder is provided with an inner circumferential groove Z that extends in to, or beyond, the bases ot the vcrtical needle grooves, thereby adording free communication between the spaces back of the npp r ends of the needles and the interior oi' the cylinder.
- the upper end of the cylinder is thus connected with the main body oit the cylinder below it by a ring e whose thickness is about equal to or somewhat less than the depth of the upper portions of the needle grooves, this ring being pierced with through radial slots f that constitute mediate portions of the upper parts of the needle grooves.
- the inner wall of the cylinder below the groove al is cut away to form a lower groove g with a circumferential sloping or bevelled wall.
- the grooves Z and constitute virtually one groove whose upper portion is ot' uniform depth and whose lower portion is of gradually diminishing depth toward the bottom.
- Vhile the shape of the vertical needle grooves and the shape and location of the circumferential groove of the needle cylinder body have been described with some particularity, these shapes are susceptible of quite substantial inodilication, the only positive requirement being that the construction shall be such that any particles that fly into the needle groove behind the needles shall have free egress into the open interior of the needle cylinder.
- the needle grooves shall, throughout a part ot' their length, be true slots, that is, shall be open atthe inside or back, as well as at the outside or front, so that there shall be no closed pockets which allow accumulation of dust, dirt, lint, etc., to an eX- teut which will interfere with the intended and required deflection of needles and that the groove al, y. shall extend below the slots f and be provided with a sloping or bevelled 'all to facilitate the escape of particles downyardly as well as inwardly.
- a needle cylinder provided with vertically extending needle receiving grooves in which needles are slidable, with shoulders above which the needles are adapted to extend so
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Knitting Machines (AREA)
Description
Patented May 13, 1930 UNITED STATES PATENT OFFICE GEORGE W. KAPPES, 0F MILW'AUKEE, WISCONSIN, ASSIGNOR TO STANDARD-TRUMP BROS. MACHINE COMPANY, OF WILMINGTON, DELAJVARE, A. CORPORATION OF DELAWARE NEEDLE CYLINDER FOR CIRCULAR-KNITTING MACHINES Application led June 7, 1929.
My invention relates to knitting machines whose needle cylinders carry independent needles and which are provided with means for selectively moving inward the thread receiving ends of selected needles. Machines equipped with such deflectable needles are used in the knitting of plated figured hosiery, certain needles being deflected to effect reverse plating. Such deflectable needles may also be used, in the production of figured fabric, to cause selected needles to engage or miss a yarn.
In such machines, pattern mechanism is used to selectively deflect predetermined needles in predetermined courses in order to knit a fabric having predetermined figures or designs other than a mere stripe. Topermit a needle to be deflected inward, the upper part of the needle groove is made of greater than normal depth and the upper part of the needle is unsupported in a radial direction, being spaced from the upright base of the groove. Flying particles of lint, dust, dirt, etc., lodge in the groove back of the upper part of the needle. The frequent lateral and vertical manipulations of the needle tends to dislodge these particles and prevent any accumulation to an extent which seriously obstructs deflection of the needles. In the case, however, of
,J those needles which are not deflected, there is nothing to prevent a substantial accumulation of such particles. 4This, too, does not affect the operation so long as the machine continues knitting a given pattern; but when the pattern is changed, and when, in the knitting of the second pattern, needles that were not deflected during the knitting of the first pattern are deflected by the pattern mechanism, the particles that have settled in the space between the needle and the base of the groove are often sufficient in quantity to prevent the deflection which is dictated by the pattern mechanism, causing failure of operation, breakage of the needle and vother troubles. Consequently, before changing the pattern mechanism to produce different designs, it is necessary to clean out the upper or deeper ends of all the needle grooves, which involves considerable time, labor and expense.
The object of the invention is to provide a Serial No. 369,045.
self cleaning needle cylinder. More specifically the object is to so construct the needle cylinder that all particles that enter the groove can and will readily escape therefrom,
the escape being facilitated by the up and y of uniform depth throughout that part thereof intended to accommodate all except the upper part of the needle; that is, the base of the groove, except its upper part, is a uniform distance from the center of the needle cylinder, forming a smooth vertical seat against which the inner edge of the needle rests and slides. The upper part of the groove is of greater t-han normal depth; that is, its base is closer to the center of the cylinder than the base of the major part of the groove. Thereby there is formed a shoulder, rela tively near to, but substantially below, the upper end of the groove, and the outer edge c of this shoulder acts as a fulcrum when the upper end of the needle is pushed in by its actuating presser. It is preferred that above the part of the groove of normal depth the groove shall deepen gradually, rather than abrupt-ly, by slanting the base of the groove inwardly and obliquely for a greater or smaller distance and then extending the base of the groove vertically upward to its open upper end, as shown in the drawing; but this is one of the details thatis susceptible of variation.
From a point approximately in vertical alinement with the upper ends of the said obliquely extending parts of the needle groove bases to a point more or less below the upper ends of the grooves, the cylinder is provided with an inner circumferential groove Z that extends in to, or beyond, the bases ot the vcrtical needle grooves, thereby adording free communication between the spaces back of the npp r ends of the needles and the interior oi' the cylinder. The upper end of the cylinder is thus connected with the main body oit the cylinder below it by a ring e whose thickness is about equal to or somewhat less than the depth of the upper portions of the needle grooves, this ring being pierced with through radial slots f that constitute mediate portions of the upper parts of the needle grooves.
The inner wall of the cylinder below the groove al is cut away to form a lower groove g with a circumferential sloping or bevelled wall. The grooves Z and constitute virtually one groove whose upper portion is ot' uniform depth and whose lower portion is of gradually diminishing depth toward the bottom. By bevelling the wall of the groove downward and inward, a ready path is aliiorded for the escape of particles from the needle grooves into and down through the space enclosed by the cylinder body.
Vhile the shape of the vertical needle grooves and the shape and location of the circumferential groove of the needle cylinder body have been described with some particularity, these shapes are susceptible of quite substantial inodilication, the only positive requirement being that the construction shall be such that any particles that fly into the needle groove behind the needles shall have free egress into the open interior of the needle cylinder. The only essential requirements, therefore, are that the needle grooves shall, throughout a part ot' their length, be true slots, that is, shall be open atthe inside or back, as well as at the outside or front, so that there shall be no closed pockets which allow accumulation of dust, dirt, lint, etc., to an eX- teut which will interfere with the intended and required deflection of needles and that the groove al, y. shall extend below the slots f and be provided with a sloping or bevelled 'all to facilitate the escape of particles downyardly as well as inwardly.
lt is quite feasible to position the groove d at a substantially lower level and thereby avoid the production ot closed wedge-shaped ilioclets between the backs of the needles above the point c. It has been found, how.- cver, that the normal upward movements of the needles operate to carry up particles that would otherwise settle in these pockets and discharge them through the slots f.
Having now fully described my invention, what I claim and desire to protect by Letters Patent is:
A needle cylinder provided with vertically extending needle receiving grooves in which needles are slidable, with shoulders above which the needles are adapted to extend so
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US369045A US1758079A (en) | 1929-06-07 | 1929-06-07 | Needle cylinder for circular-knitting machines |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US369045A US1758079A (en) | 1929-06-07 | 1929-06-07 | Needle cylinder for circular-knitting machines |
Publications (1)
Publication Number | Publication Date |
---|---|
US1758079A true US1758079A (en) | 1930-05-13 |
Family
ID=23453851
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US369045A Expired - Lifetime US1758079A (en) | 1929-06-07 | 1929-06-07 | Needle cylinder for circular-knitting machines |
Country Status (1)
Country | Link |
---|---|
US (1) | US1758079A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3817058A (en) * | 1971-09-22 | 1974-06-18 | V Lombardi | Cylinder and dial construction for knitting machines |
US4741181A (en) * | 1985-09-14 | 1988-05-03 | Sipra Patententwicklungs-Und Beteiligungsgesellschaft Mbh | Circular knitting machine with needles and holding-down plate members |
-
1929
- 1929-06-07 US US369045A patent/US1758079A/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3817058A (en) * | 1971-09-22 | 1974-06-18 | V Lombardi | Cylinder and dial construction for knitting machines |
US4741181A (en) * | 1985-09-14 | 1988-05-03 | Sipra Patententwicklungs-Und Beteiligungsgesellschaft Mbh | Circular knitting machine with needles and holding-down plate members |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US1758079A (en) | Needle cylinder for circular-knitting machines | |
US2555920A (en) | Yarn carrier for knitting machines | |
US2069672A (en) | Stitch ring for knitting machines | |
GB538489A (en) | Improvements in or relating to knitting machines | |
US2945368A (en) | Needle cylinder for sinker-type circular knitting machines | |
US2534184A (en) | Knitting machine | |
US1691887A (en) | Yarn-cutting means for knitting machines | |
US3377823A (en) | Needle cylinder assembly for knitting machines | |
US1882430A (en) | Knitting stitch measuring mechanism and process | |
US810578A (en) | Knitting-machine. | |
US1048965A (en) | Web-holder for knitting-machines. | |
US2193872A (en) | Knitting machine | |
US2554656A (en) | Straight knitting machine | |
US2163461A (en) | Circular knitting machine | |
US1105735A (en) | Circular french-welt knitting-machine. | |
US1666784A (en) | Vertical striper for wide-circular-rib-knitting machines | |
US2129593A (en) | Method of plaiting knit fabric | |
US729075A (en) | Needle-actuating device for knitting-machines. | |
US3667256A (en) | Means for guarding needle latches of circular knitting machines | |
US2259897A (en) | Selector means for knitting machines | |
US2263530A (en) | Yarn feeding means for knitting | |
US1926814A (en) | Apparatus for knitting seamless stockings | |
US2052776A (en) | Mechanism for effecting normal and reverse plating | |
US1682763A (en) | Machine for spinning and winding filaments | |
US2276972A (en) | Circular knitting machine of the double axially opposed needle cylinder type |