US846430A

US846430A - Open-work knitting-machine.

Info

Publication number: US846430A
Application number: US33540306A
Authority: US
Inventors: Robert W Scott
Original assignee: Individual
Current assignee: Individual
Priority date: 1906-09-20
Filing date: 1906-09-20
Publication date: 1907-03-05
Anticipated expiration: 1924-03-05

Description

- No. 846,430. PATENTED MAR. 5, 1907.

R. W. SCOTT. OPENWORK- KNITTING MAGHINE.

APPLICATION FILED SEPT. 20. 1906.

5 SHEETSSHEET 1.

0 8 V to No. 846,430. PATENTED MAR. 5, 1907.

R. W. SCOTT.

OPENWORK KNITTING MACHINE. APPLIOATION FILED SEPT.20,1906'.

5 SHEETS-SHEET 2.

No. 846,430. PATENTED MAR. 5, 19071 f I 'R. W. SCOTT.

OPENWORK KNITTING MACHINE.

5 SHEETS-SHEET 3.

APPLICATION FILED SEPT.20.1906. I

No. 846,430. PATBNTED MAR. 5, 1907.

R. W. SCOTT. I OPENWORK KNITTING MACHINE.

APPLICATION FILED SEPT. 20, 1906.

5 SHEETS-SHEET 4.

No. 846,430. PATENTED MAR. 5, 1907 I R. w. SCOTT.

OPENWORK KNITTING MACHINE.

APPLICATION FILED SEPT.20,1906.

5 SHEETS-SHEET 5.

UNITED STATES PATENT OFFICE.

ROBERT W. SCOTT, OF LEEDS POINT, JERSEY, .ASSIGNOR OF ONEHALF TO LOUIS N. I). WILLIAMS, OF 'OGONTZ, PENNSYLVANIA.

OPEN-WORK KNITTING-MACHINE.

Specification of Letters Patent. v

Patented March 5, 1907.

Application filed September 20.1906. Serial No. 335,403.

To all whom, it may concern.-

citizen of the -United States, residing in Leeds Point, Atlantic county, New Jersey, have invented certain Improvements in O en-VVork Knitting-Machines, of which th fo lowing is a specification.

The object of my invention is to providea machine of simple construction for rapidly producing knitted fabrics of meshed or openwork character due to the formation of eye.- let-holes in the web, the formation of such eyelet-holes being effected by transferring sinker-Wale loops to adjoining needle-wales in the manner set forth in my applications, Serial No. 822,735, filed June 21, 1906, and Serial No.'331,014, filed August 17,. 1906.

Although my invention is not necessarily limited in its application to a machine employing latch-needles, it can most readily be adapted to such a machine, and renders it possible to produce an effective eyelet fabric machines emplying spring-beard needles, such as have hitherto been used for this class or work.

In the accompanying drawings, Figure 1 is a vertical sectional view of sufficient of a circular-knitting machine to illustrate my invention. Fig. 2 is a side elevation showing the cams of the cam-cylinder developed in a" flat plane. Fig. 3 is an inverted plan view of the dial-cams of the machine. Figs. 4, 5, and 6 are enlarged views illustrating the method of effecting transfer of a sinkerwale loop to an adjoining needle-wale. Fig. 7 is a vertical sectional view on the line at 'm, Fig. 8, of part of a multifeed circular-knitting machine constructed f or carrying out my invention. 7 Fig 8 is an inverted plan view of the dial-cams of such machine. Fig. 9 is a vertical sectional view on the line a n, Fig. 10, but illustrating a s ecial construction of the machine inten ed for disposing the eyelet-holes in different- Wales of the fabric Fig. 10 is an inverted plan view of the dial-cams of such ma chine. Fig. 11 is a similar view of the dial cam-cap of a machine intended for transferring a plurality of sinker-Wale loops at one time. Figs. 12 and 13 are enlargedperspective views of a special form or transfer device sometimes employed. Fig. 14 is a vertical sectional View of a rib-knitting machine to which my invention has been applied, and

1 Figs. 15 and 16 are views illustrating special Be it known that I, ROBERT W.- Soon, a 1 features sometimes embodied in a machine upon a machine of that type in place of the of this type.

Referring in the first instance to Figs. 1 to 6 of the drawings, 1 represents the needlecylinder of an ord nary circular-knitting machine having needles 2, which are verto the knitting-needles 2 being dependent upon the number and disposition of the vertical rows of eyelet-holes which are to be formed in the knitted web produced by the machine, but in any case being less than onehalf of the number of needles in order to produce one or more plain wales between successive eyeletforming wales.

The machine shown in Figs. 1 to 6 is intended for the production of plain webs. Hence there are no needles in the dial; but my invention is also applicable to machines for producing ribbed web, and therefore provided with dial-needles,. as hereinafter explained.

The dial 4 is supported vertically upon a collar 6 at the lower end of a central spindle 7, and to the latter is secured a dial cam-cap 9, which is disposed above the dial 4, and carries the cams whereby the reciprocation of the transfer-points 5 in radial planes is effected. In the machine shown in Fig. 1 the cambox 3 and dial cam-cap 9 are intended tobe the rotating members, the needle-cylinder 1 and dial 4 being fixed; but my invention is equally applicable to machines in which the needle-cylinder and dial cam-box are fixed. The cam-cylinder 3 is, as shown in Fig. 2, provided with lift-

cams

10, 11, 12, and '13, with depressin -

cams

14, 15, and 16, and with a series 0 guard-cams 17, the purpose. of which will be explained hereafter.

The dial cam-cap has a fixed projecting cam 19, an adjustable projecting cam 20,

adjustable retractingcams

21 and 22, and a fixed retracting-cam 23, cooperating with suitable guard-cams, as shown in Fig. 3.

Each of the transfer-points 5 has its outer I end 5 in a different lateral plane from that l of the main stem or shank, these two members of the transfer-point being connected byf, and g in Figs. 2 and 3, the direction of movement of the cam-cylinder and dial camcap being as indicated by the arrows in said figures, and the line. 1) indicating the point at which the needles 2 engage the knittingyarn from the yarn-guide at, whose lateral relation to the cams is represented the dotted circle in Fig. 2, the vertical position of the guide, however, being conslderably higher than there represented.

Supposing that the needles and transferpoints are fullyretracted, the operation of the machine when the cams of the dial cam-cap are adjusted to the positions shown by full lines in Fig. 3 will be as follows: The transferpoints 5 will first be projected by the cam 19 until their outer ends 5* occupy a position between adjoining cylinder-needles, as represented in Fig. 4, and the needles will then be first partially projected by the cam 10 and afterward fully projected by the cam 11, so as to be in position to receive the yarn from the yarn-guide 90. When the needles are retracted by the cam 14 so as to engage and draw stitches of said knitting-yarn, the sinker-wales will be engaged and held by the outer ends 5 of the transfer-points, and said sinker-wales will then be slackened by the partial rise of the needles due to the action of the lift-cam 12 thereon, the needles being then partially depressed again by the cam 15, so as to lower their hooks to a point just below the backs of the transfer-points, as shown at the left-hand side of Fig. 1. The

said transfer-points are then projected by the action of the cam 20, which has the effect of bringing the diagonally-inclined members of said transfer-points into action upon the sinker-Wale loops previously deposited upon the outer members 5*, and this causes a lateral displacement of said loops, as well as a slight outward displacement of the same, due to the action of the shoulder 6 thereon, the parts being now in the relation to each other shown in Fig. 5. v

The transfer-points remain in the projected position until-the needles have, by the action of the cam 13, been projected to the position shown at the right-hand side of Fig. 1, so as to enter the sinker-Wale loops which have previously been displaced into the path of the needles, as shown in Fig. 5. The transfer-points are then partially retracted by the action of the cam 23 of the dial cam-cap in order to slacken the sinker-Wale loops, so that when the needles which are to receive the same are retracted by the action of the cam 16 their books will engage said sinker-Wale loops, which are then released by the full withdrawal of the transfer-points under the action of the cam 22, the relation of the parts now being as illustrated in Fig. 6. son of this transfer of the sinker-Wale loops into adjoining needles-Wales eyelet-holes are produced in the knitted web, and these eyelet-holes may be produced in any desired sinker-wales of the web, depending upon the number and disposition of the transfer-points in respect to the needles of the machine. The production of eyelet-holes, however, presupposes not only the formation of plain wales between the eyelet-forming wales, but also the formation of one'or more regular courses of knitting between these, in which the sinker-Wale loops are transferred in the manner before described, and in order to effect this result in a single-feed machine, such as that represented in Figs. 1, 2, and 3, I depress the

cams

21 and 20 after each transfer to the positions shown by dotted. lines in Fig. 3, whereby the transfer-points, although projected by the cam 19 to the position shown in Fig. 4, will be retracted by the action of the cam 21 before they reach the line b, at which the needles are retracted by the cam 14 in order to cause their hooks to engage the knitting-yarn. Consequently the sinker-w'ales will be formed below the transfer-points instead of above and upon the same, and this operation may be continued for as many courses as it may be desired to have intervene between the eyelet-hole courses.

The same result may be effected even if the projecting cam 20 is not retracted to the position shown by dotted lines in Fig. 3, the pro- By rea-' jection of the empty transfer-points in such case causing them to act as web-holders when the needles are projected to the position shown at the right-hand side of Fig. 1 by the action of the cam 13.

If the cam 20 is adjusted to the retracted position shown by dotted lines without retracting the cam 21, the result will be the slackening of the sinker-wales due to the laying of the same upon the outer ends 5 of the transfer points without effecting transfer and this operation is preferably performed in a course preceding that in which the transfer operation is effected in order to increase the size of the eyelethole thereby produced.

If it is desired to effect the simultaneous transfer of a plurality of successively-formed sinker-Wale loops, such result can be effected by adjusting the

cams

20 and 22 to the positions shown by dotted lines in Fig. 3 and permitting the cam 21 to remain in the position shown by full lines in said figure. The consequence of this will be that the transferpoints will remain in the partially-projected position shown in Fig. 4 until the desired the same to the transfer tion and subsequent retraction of the transfer-points, so as to effect transfer of'the pairs or groups of sinker-Wale loops onto the adj oining cylinder-needles.

In order to effect lateral spreading of the sinker-Wale loop so as to engage a needle on eachside of the same, I may usefa transferpoint with forked head split horizontally, one member of said forked head having its diagonal portion 55 extending in one direction and the other member having its diagonal portion 5 extending in the opposite direction, as shown, for instance, in Fig. 12, or

I may use two transfer-points having their outer ends 5 either side by side, as in Fig. 13, or in the same vertical plane, as in Fig. 12, one of these transfer-points having its diagonal portion 5 extending in one direction, and the other having its diagonal portion 5 extending in the opposite direction. When the transfer-point is provided with a forked head, as in Fig. 12, the outer end-of each of the members of the fork will be sufiiciently resilient to permit the loop of yarn drawn down by the hooks of the needles to spread said outer members so as to pass between them when the transfer-point is retracted, and the same is true of the transfer-points machine as many sets of cams will be employed in the cam-cylinder and dial-cam cap as there are yarn-feedsin the machine, Figs. 7 and 8 showing a machine intended for using five feeds, the cam-cap having five sets of cams 19 20 21 22 and 23, which perform the same functions as the corresponding cams'19, 20, 21, 22, and 23 of Fig. 3, only one set of these cams (lettered X) being adjusted for effecting the transferring operation, the cams corresponding with the other four feeds being adjusted to inoperative position in order to form four plain courses of stitches between successive eyele=' hole courses:

Figs. 9 and 10 illustrate an arrangement of cams in a dial-cam cap of a five-feed knittingmachine and show also one means which may be employed for effecting the formation of eyelet-holes first in one Wale of the web and then in an adjoining Wale of the same. In this machine the plain projecting cam 2O is replaced by a rotating notched wheel 25, having alternate shallow and deep notches, the shallow notches engaging the butts of the transfer-points and serving to project osition, but the deep notches permitting t e butts to pass the Wheel without such projection. The number of transfer-points in the dial in this case should be one more or one less than an side of the view in even multiple of the number of notches in the wheel.

For instance, if the latter has twelve notches the number of transfer-points in the dial may be twenty-three or twentyfive, thirty-five or thirty-seven, forty-seven or forty-nine. or so on, the result being that on one revolution of the machine the transfer-points 1 3 5 7 9, &c., will be projected and the transferpoints 2 4 6 8 10, '&c.,

will not be projected, this order being reversed on the next rotation of the machine.

Fig. 11 illustrates an arrangement of cams which may be used in the dial-cam cap of a multifeed knitting-machine for the purpose of efiecting the simultaneous transfer of a plurality of sinker-Wale loops. In this emodiment of my invention two notched Wheels 25 are employed, one in conjunction with each of two successive cams 21 these wheels having the effect of projecting'alter nate transfer-points to the receiving position in the same-manner as the'wheel 25 of Figs. 9 and 10 projects them to the transfer position, the following cams 20 22, and 23 ef-. fecting the rojection of the transfer-points to the transfizr position and their subsequent retraction in order to cast the transferred loops. The use of the second wheel 25i-is for the purposeof insuring the proper projection at the second feed of such of the transferoints' as may after having been ro'ecte by the precedin wheel at thefirst ee have become acci entally' retracted from such projected position between the first and second feeds.

Inapplying my invention to a rib-knittin machine the sinker-wales may be transferre either to cylinder-needle wales or to dialneedle wales or sometimes to one and sometimes to the other, the transfer-points for transferring the sinker-Wale loops to the cyl inder-needle's being carried by the needledial and alternating with airs or series of needles therein and the points for transferring the sinker-Wale loops to the dial-needles being carried by the cylinderand likewise alternating with pairs or series of needles therein. A machine of this type is illustrated in Fig,v 14, the dial transfer-point being shown at the right-hand side of said figure in position totransfer a sinker-Wale loop to a cylinder-needle and a cylinder transfer-point being osition to transfer a sinker-Wale loop toa ial-n'eedle. This may be either a single or a multi feed machine; but in the former case'the cams for operating the transfer-points should be adjustable to inoperative position in order to provide for the formation of one'o'r more plain courses between successive eyelet courses. The dial-,needle-operating cams in a machine of this character will have an ac-. tion u on the dial-needles similar to the action 0 the cams of the cam-cylinder upon ICC shown at the left-hand cylinder, 31 representing the needle-grooves of the dial, and 32 representing the transferpoint grooves. Ina machine of this type I prefer to use a transfer-point having the'stem 5 and outer end 5 in the same longitudinal plane as shown in Fig. 16, the diagonal portion 5 of the point being connected to the stem by a right-angled portion 5*. By reason of this construction the groove for the of of the I transfer-points, each consisting of a stem transfer-point can beformed midway pairs of needle-grooves in the dial, whereas if a transfer-point of the character shown in Fig. 4 was employed the groove for its reception would have to be formed in the space between one of the dial-grooves and the adjoining cylinder-groove, and in machines of relatively fine gage this space is insufficient.

Either of the forms of transfer-point which I have shown and described is free from any hook, latch, or other obstruction, such as forms part of a transfer-needle, and the sinker-wale loops can therefore be cast from the points without difficulty and with a minimum amount of reciprocating movement of the point. Consequently the use of such points is always preferred, although my invention in its broader embodiments is not limited to such use, but contemplates the use of transfer-needles or transfer devices as well.

I claim 1. The combination, in a knitting-machine, of needles, means for knitting thereupon, means for transferring sinkerwwale loops to adjoining needles, and means for forming one or more plain wales and courses between the wales and courses in which such transfer is effected.

2. The combination, in a knitting-machine, of needles, means for knitting thereupon, means for transferring simultaneously to an adjoining needle or needles sinker-wale loops in a plurality of courses, and means for forming one or more plain wales and courses between the Wales and courses in which the transfer is effected.

3. The combination, in a knitting-machine, of needles, means for knitting thereupon, means for transferring sinker-wale loops to adjoining needles, means for forming one or more plain wales and courses between the wales and courses in which such. transfer is effected, and means for slackening the sinkerwale loop in advance of the transferred loop or loops.

thereupon,

structed loop-supporting portion beyond the same, means for advancing or retracting said points to engage, displace and release certain sinker-wale loops of the web, and means for operating said loops.

6. The combination, in a knitting-machine, needles, means for knitting thereupon,

the needles to engage and receive with inclined transfer portion having a shoulder at the base of the same, and an outer unobstructed loop-supporting portion, means for advancing and retracting said points to engage, displace and release certain sinker wale loops of the web, and means for operating the needles to engage and receive said loops.

7. The combination, in a knitting-machine,

of needles, means for knitting thereupon,

means for transferring sinker-wale loops to an adjoining needle or needles, and means for preventing en agement of the sinkerwales by the trans 'er devices in some of the courses whereby the said sinker wales in such courses are not displaced. I

8. The combination, in aknit'ting-machine, of needles, means for knitting thereupon, means for transferring sinker-wale loops to an adjoininmneedle or needles, and-means for retracting the transfer devices, in knitting some of the courses, before they reach the oint at which. the sinker-wale loops will be lirid upon them. i

9. The combination, in a knitting-machine, of needles, means for knitting thereupon,

means for transferring sinker-wale loops to vices to remain in said projected position-or retracts the same in order to cause them to miss the loops.

11. The combination, in a knitting-machine, of needles, means for knitting thereupon, sinker-wale-loop-transfer devices, a cam for projecting the same to receive said sinker-Wale loops, and a cam for further pro- {ecting the same to efiect transfer of said oops, said latter cam being adjustable to inoperative position.

. cams being adjustab e means for causing certain of the latter to ooact with certain of'the knitting-needles and others to coact subsequently with others of said knitting-needles. 14. The combination, in a knitting-machine, of needles, means for knitting there upon, sinker-wale-loop-transfer devices, and a rotating. wheel for operating said transfen devices in sets.

15. The combination, in a knitting-machine, of needles, means for knitting thereupon,and sinker-wale-transfer devices constructed to receive a sinker-Wale loop and laterally spreadthe. same for engagement with the needles on opposite sides of it.

16. The combination, in a knitting-machine, of needles, means for knitting thereupon, and a Sinker-wale-transfer device constructed to receive a sinker-Wale loo ;l and spread the same for engagement wit the needles on opposite sides of it, said transfer ,device having membersbetween which the transferred loop can pass when said transfer device is retracted.

17. The combination,in a rib-knittin machine, of two sets of needles, means for ting thereupon, sinker-Wale-transfer devices, an means for operating same to receive sinker-Wale loops and transfer them to needles of. one set.

18. The combination, in a rib-knittin ma-. chine, of needles, means. for knitting t ereupon, sinker-Wale transfer devices, and means for operating same to receive sinkerwale loops and transfer them to adjoining needles, some of said sinker-Wale devices eoacting with needles of one set and others coacting with needles ofthe other'set.

19. A transfer-point for knitting-machines,

said point having a stem, a diagonal transfer member formed by an open bend in the stem, and an unobstructed loop-supporting member outwardly beyond said transfer member.

20. A transfer-point for knitting-machines, said point having) a stem, a diagonal transfer member formed y an open bend in the stem and having a shoulder at the base of the same, and an unobstructed loop-supporting member outwardly beyond said transfer member.

21. A transfer -point for knitting-machines, said point having a stem, a diagonal transfer member, formed by an open bend in the stem, and an unobstructed loop-supporting member outwardly beyond said transfer member and in the same longitudinal plane as the stem;

22. Aftransfer-point for knittingmachines, said point havin a stem, a diagonal transfer member formed y an open bend in the stem and havinga shoulder at its base, and an unobstructed loop-supporting member outwardly beyond said transfer member and in the same longitudinal plane as the stem.

23. A transfer-point for knitting-machines, said point having a stem, and a diagonal transfer member with stem connection at its base at a right'angle to the stem and a loopsupporting member at its outer end.

24. A transfer-point for knitting-machines, said point having a stem, and a diagonal transfer member with stem connection at its base at a right angle to the stem and a loopsupporting member at its outer end, said stem and loop-supporting member being in the same longitudinal plane. I

25. The combination, in a knitting-machine, of needles, means for'knittingthereupon, and means for transferring simultaneously to an adjoining'needle or needles sinker-Wale loops in a plurality of courses.

26. The combination, in a knitting-machine, of-needles, means for knitting thereupon, means fortransferring simultaneously to an adjoining needle or needles, sinker-Wale loops in a plurality of courses, and means for forming one or more plain courses between successlve groups of transferred courses.

"In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

I ROBERT W. SCOTT. Witnesses:

HAMILTON D. TURNER, KATE A. BEADLE.