US562553A - Piedad nelson - Google Patents

Piedad nelson Download PDF

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US562553A
US562553A US562553DA US562553A US 562553 A US562553 A US 562553A US 562553D A US562553D A US 562553DA US 562553 A US562553 A US 562553A
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cam
yarn
needles
nelson
gear
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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B7/00—Flat-bed knitting machines with independently-movable needles
    • D04B7/04—Flat-bed knitting machines with independently-movable needles with two sets of needles

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  • ALFRED NELSON, OF ROCKFORD, ILLINOIS PIEDAD NELSON, ADMINISTRA- TRIX OF SAID ALFRED NELSON, DECEASED, ASSIGNOR TO RALPH EM- ERSON, IVM; A. TALCOTT, EVA C. NELSON, ⁇ VILLIAM NELSON, OSCAR NELSON, FRITIIIOF NELSON, AND JOHN FRANKLIN NELSON, OF SAME PLACE, IVILLIAM ZIOCK, OF S'l. LOUIS, MISSOURI, AND ANNA NELSON BECK, OF CHICAGO, ILLINOIS.
  • Knitting-Machines of which the following is a specification.
  • This invention relates to improvements in machines of the class known as straight-row 1o knitting-machines, especially that type of this class of machines shown and described in United States Letters Patent No. 214:, 308, granted April 15, 1879, to John Nelson, and also in an application, Serial No. 165,7 31, for
  • My object mainly is to improve the said John Nelson machines, and this invention relates principally to mechanism for gradually widening or enlarging tubular-knit fabrics,
  • My invention also relates to yarn-carrying mechanism and various details.
  • Figure 1 is a plan View of the machine. Fig.
  • Fig. 3 is an elevation of the right end of the machine with the driving mechanism removed and the shaft for actuating the pattern cylinder in section.
  • Fig. l is an elevation of the left endof the 5 machine.
  • Fig. 5 is a view, partly in elevation and partly in section, on the line 5 5 of Fig. 1, with the upper and lower parts of the mechanism broken away.
  • Fig. 5 is a detail View showing particularly the adjustingscrew 70? of the yielding stop-arm K.
  • Fig. 6 is a view, partly in elevation and partly in section, on the line 6 6 of Fig. 2, with the upper and lower parts of the mechanism broken away.
  • Fig.7 is a plan View of the yarn-carrying mechanism.
  • Fig. 8 is a front elevation of the same.
  • Fig. 9 is a View, partly in elevation and partly in section, on the lines 9 9 of Figs. 7 and S. Fig.
  • Fig. 10 is a section on the line 10 of Fig. 9.
  • Fig. 11 is a front elevation of the main actuating-gear, with its bearingsleeve in section.
  • Fig. 12 is an elevation of a device for actuating the dropping-needle and the mechanism which trips the pawls of the reciprocating needle-controlling rackbars. levers for tripping the pawls of the needlecontrolling reciprocating rack-bars.
  • Fig. 14 is a front view of the upper portion of the machine with the yarn-carrying mechanism and other parts detached.
  • Fig. 15 is a front elevation of the front needle-controlling reciprocating rack-bars.
  • Fig. 16 shows a rear elevation of the actuating and holding pawls and the trippingrod thereof of the reciprocating controlling rack-bars for the front widening-needles.
  • Fig. 17 is a view, partly in end elevation and partly in section, on the line 17 17 of Fig. 1.
  • Fig. 18 is a bottom view of the left ends of the main cam-slides, the channel-plates, and the guide-bars, and some of the attachments thereof, representingparts of the mechanism for actuating the needlecontrolling reciprocating rack-bars to throw the widening-needles out of action.
  • Fig. 19 is a view, partly in side elevation and partly in section, on the line 19 19 of Fig. 17.
  • Fig. 19 is a view, partly in side elevation and partly in section, on the line 19 19 of Fig. 17.
  • Fig. 20 is a view, partly in elevation and partly in section, on the line 20 20 of Fig. 1, representing the pattern-cylinder and attachments thereof.
  • Fig. 21 is an elevation of the auxiliary wheel for controlling the mechanism for actuating the widening-needles with its tire
  • Fig. 13 is a side elevation of one of the removed.
  • Fig. 22 is a view showing a portion of the periphery of the pattern-cylinder flattened out.
  • Fig. 23 is a similar View of the auxiliary wheel and its tire.
  • Fig. 245 isa plan View of one of the cam-blocks of the auxiliary wheel detached.
  • Fig. 25 is a section on the line 25 25 of Fig. 23.
  • Fig. 21 is an elevation of the auxiliary wheel for controlling the mechanism for actuating the widening-needles with its tire
  • Fig. 13 is a side elevation of one of the removed.
  • Fig. 22 is a view showing a portion of the periphery
  • Fig. 26 is a side elevation of one of the needle-jacks of the back row of needles.
  • Fig. 27 is a similar View of one of the rocking levers for supporting the needle-jacks of the needles of said row.
  • Fig. 28 is a side elevation, partlyin section, designed to represent the manner of dropping the left needle of the back row of needles.
  • Fig. 29 is a side elevation of one of the segment-gears of the pat tern-cylinder detached.
  • Fig. 30 isa front elevation of the sustaining-bar for raising and lowering the needles of the front row detached.
  • Fig. 31 is a bottom view of a portion of the back main cam-slide with its attached cams, and
  • Fig. 32 is a rear elevation of these devices with the parts in the same positions.
  • Fig. 33 is a bottom View of a portion of the front main cam-slide and its attached cams, and Fig. 34 a front elevation of these devices with the parts in the same positions.
  • Fig. 35 is a plan view, on an enlarged scale, of the sectional sliding saddle and connections thereof and the presser-hook cams.
  • Fig. 36 is a view of one of the presser-hooks.
  • Fig. 37 is a View, partly in elevation andpartly in section, showing details of the switch-gate-controlling mechanism for the cams which actuate the front needles.
  • the mechanism is mounted upon a suitable sectional main frame A.
  • a drivingshaft A extending transversely to the machine and suitably mounted at the right end thereof in the main frame, is provided with fast and loose pulleys to be driven in an obvious way from any appropriate motor.
  • a hand-wheel A is secured to the front end of the driving-shaft, and this shaft is provided with a fast pinion a, which engages with a main actuating gearwheel a on a stud-axle a cast with a projecting portion or bracket B at the right end of the main frame.
  • This gear-wheel a is cast with a sleeve-bearin g I), by which it is mounted upon its stud-axle.
  • a cam-wheel or irregular snail-gear B is also formed with this sleeve for a purpose in turn to be explained.
  • a front needle-bed O and a rear needle-bed O are each slotted and provided with a slotted steel plate 0, to constitute guide-grooves for the front and rear rows of needles I) and 12 respectively, as well as for their jacks B
  • the bed-plates are inclined as heretofore and provided each with a lower lon gitu din allygrooved guide-bar or channel-plate 0 C and an upper longitudinally-grooved guide-bar or channel-plate C C
  • These main cam-slides carry cams for actuating the needles of the front row I) and the needles of the back row b respectively, to advance and retract them.
  • An elbow-lever c pivotallymounted upon the main-frame bracket by a stud 0 is connected at the upper end of its longer arm with a bracket 0 on the back main cam-slide C by means of a pitman 0
  • the other end, or the shorter arm of this elbow-lever is linked by a connecting-rod b with a wristpin 19* 011 the gear-wheel Ct.
  • Alternating carriers A D for the thread employed in knitting (the thread may be of yarn, cotton, silk, &c.,) which carriers will hereinafter be termed yarn-carriers, are similarly constructed, and are supported, and thrown into and out of engagement with their actuating mechanism, so as to be reciproeated by turns, as and for a purpose farther on to be explained.
  • Each of the alternatel y-actin g yarn-carriers is mounted to reciprocate over the central opening d, across which the needles are projected and retracted, and moves in a path transversely to the paths traveled by the needles, as is well understood.
  • the yarn-carriers are actuated in the desired order by connections with a slide 13*, to which the proper reciprocating movement is imparted, as farther on explained.
  • This aetuating-slide 13 carries a controlling-arm B forming a part of the mechanism which connects it alternately with the yarn-carriers.
  • a sliding saddle I) is reciprocated by connection, as next to be described, with the actuating-slide of the yarn-carriers and is guided in ways formed in the adjacent or inner edges of guide-bars D D, secured to the needlebeds over their inner edges above and 011 opposite sides of the central opening d.
  • the saddle is made in two sections 1) If, united by a cross-piece or connecting-plate D and connected with the actuating-slide by means of an inwardly-projecting base extension or connecting-piece B of the controllingarm 13.
  • This connecting-piece B detachably interlocks with the sliding saddle by fitting in a space provided between the shoulder IIO formed by the connecting-plate D and an attached lug i of the section b of the saddle, as clearly shown by the drawings.
  • the front section Z) of the sliding saddle is provided with two horns (Z d for opening the latches of the back row of needles, Fig. 35, and the rear section b of the saddle is provided with a horn (Z3 for opening the latches of the front row of needles on the outward stroke of the main cam-slides, (the stroke toward the left end of the machine.)
  • the needles of the back row at times both advance and retract at each stroke of the yarn-carrier and the sliding saddle, or make two reciprocations for every reciprocation of the yarn-carrier, the sliding saddle, the main cam-slides, and the cams E E for actuating the front and rear presserhooks D D
  • the front needles I make one reciprocation for each reciprocation of their actuating-cams carried by the front cam-slide O and that these needles operate only when circular work is being done, they being thrown out of acmain cam-slide, at the time of heel and toe knitting, make but one reciprocation for each reciprocation .of their actuating-cams during circular knitting, at the time the frontneedles are working. It consequently follows that the change in the position of parts relatively to each other, as above described, is not necessary so far as the front needles, their cooperating presser-hooks, their actuatingcams, and the yarn-carrier, and the horn (i are concerned.
  • the shifting mechanism employed for maintaining the above-described order of operation of parts is as follows:
  • the gear-wheel a is provided on its front face (the face opposite that from which the wrist-pin b projects) with a cam-groove A in which works a pin b which is provided with a roller on theupper end of a lever A which is pivotally supported intermediate its ends by a stud a on the main-frame bracket B and at its lower end is forked or slotted, and has self-adjusting jointed connection with the lower end of a lever A, mounted upon the before-described elbow-lever c by means of a pivot a.
  • a pivot-pin a at the lower end of the lever A is provided with a roller which enters the slot in the lower end of the lever A, making the needed self-adjusting connection of these levers.
  • the lever A is connected by a link or pitman A with the yarncarrier-actuatin g slide B.
  • the yarn-carrier-aetuating slide 13' is supported or carried by and reciprocates in a suitable guideway Z2 formed in the bracket 0 on the back main cam-slide.
  • the controlling-arm B is formed with a curved upper end 1), adapted to engage with a sleeve-slide B carried by a rock-shaft B, with which it is engaged by means of a groove a and feather b (see Fig. 10,) so that while free to slide along this rock-shaft it is compelled to turn therewith, as is well understood.
  • the curved upper end of the controllin g-arm rests in an annular recess or bearing 13, formed between adjustable collars b Z) of the sleeveslide.
  • the eyes d d of the yarn-carriers, through which the yarn passes to be supplied to the needles, are formed at the lower ends of pivotally-supported arms (1 constituting the yarn-carriers proper. At their upper ends these arms have hinged connection by means of the pivots c c with the supporting-slides A A", respectively.
  • a spring a acts upon each yarn-carrier with a tendency to keep it in its working position, the movement of the yarn-carrier in the direction in which its spring presses it being limited by an adjustable set-screw a".
  • a pointed inclined sided separating-horn a secured to the right frame-upright B acts upon the yarn-carriers at the inner ends of their strokes, so as to move them sidewise slightly against the action of their springs, in order that the yarn-carrier, which is out of operation, will be prevented from interfering with the reciprocating yarn -carrier.
  • the yarn-carrier arms are each composed of two sections.
  • the lower arm cl or yarn-carrier proper is removably connected by screws 0 with an upper section C, which is hinged to its supporting-slide.
  • the upper sections 0 of the yarn-carrier arms are of plate form adapted to bear in recesses in their respective supportingslides, as plainly shown in Figs. 8 and 9.
  • the rock-shaft B is automatically actuated at proper intervals to throw one yarn-carrier out of action and the other into action, in order that a yarn-carrier A supplied with thick or heavy yarn, may be thrown. into action, and the other yarn-carrier, D, supplied with lighter yarn, may be thrown out of action, or vice versa, according to whether the heel or the tee is being formed, requiring the heavy yarn, or the foot or leg portion of the stocking is being knitted with lighter yarn. If preferred, diiferent-colored yarns may be used, and they may be of corresponding weight, if desired.
  • the mechanism in this instance employed for alternating the yarn carriers is as follows:
  • An elbow-lever C for actuating the rockshaft B of the yarn-carrier mechanism is pivotally supported by the frame-stud c and carries at the end of its lower or shorter arm a pin 0 which may be provided with a roller, entering a cam-groove C in the outer face of a ring J attached to the right end of the pattern-cylinder, and hereinafter more particularly described.
  • the elbow-lever At its upper end the elbow-leverhas jointed connection with the right end of the rockshaft by means of a slotted lug 0 secured by a sleeve to the rock-shaft, and a pin on the elbow-lever entering the slot of said lug.
  • a spring-metal star-shaped washer C and a securing-pin serve to properly hold the elbowlever upon its stud 0
  • the movement imparted to the patterncylinder causes the cam-groove to act five times upon the pin of the elbow-lever for each complete revolution of the pattern-cylinder, the inclines or cam-surfaces d d7 d cl d acting in turn upon the elbow-lever pin.
  • the yarn-carrier D which is supplied with heavy yarn, is in action for knitting the toe of a stocking.
  • the rockshaft is actuated to disengage the lug of the sleeve-slide B from the supporting-slide A, and engage it with the supporting-slide A which, during the action of the yarn-carrier D, was at rest at the right end of its path of movement against the horn a hen that portion of the cam-groove extending from the incline d to the incline d?
  • the incline al acts upon the elbow-lever, the sleeve-slide is disengaged from the supporting-slide A and again engaged with the supporting-slide A for knitting the heel.
  • the action of the incline 01 upon the elbow-lever alternates the yarn-carriers, the yarn-carrier A provided IOf with the lighter yarn, being thrown into action for knitting the leg, during the time that the elbow-lever pin is engaged with that portion of the cam-groove extending from d to d".
  • Levers or controlling arms (1 of the back presser-hooks project between the two sections of their actuating-cam, and are of a width about corresponding with the space formed between the recess of the main section and the projection of the other section of the cam.
  • the connecting-piece B has upon its under side a downwardly-projecting lug (1 which enters a recess between upwardly-projecting lugs D D of the main section of the cam.
  • the space between these lugs is of a length sufficient to allow of the necessary amount of play of the lug d at the time of shifting.
  • the small section 6 of the cam is provided with an upwardly-projecting lug e, which enters a recess in the under side of the connecting-piece B formed between (lownwardly-projecting lugs f f This re cess corresponds approximately with the space between the lugs on the main section of the cam. It will be understood that at the end of each stroke the presser-hook cam will be left in a position such that it will not be moved at first upon the commencement of the next stroke of the actuating-slide of the yarncarrier, thus providing for shifting upon each stroke of the yarn-carrier and main camslides.
  • the cam E for actuating the front set of presser-hooks is the same in all respects as that for operating the back set of presserhooks, except that ithas detachable rigid connect-ion with the saddle B by a bracket e secured to the saddle-section Z), instead of having a shifting connection, so as to be adj 11stable automatically relatively to the yarn-carrier.
  • the downwardly-projecting outer end of the bracket e engages a recess in the main section of the cam E, and downwardly-projecting lugs 12 19 of this bracket embrace the lug of the small cam-section C.
  • presser-hooks are supported by their pivotrods a a and work in guide-grooves in the ⁇ )espective guide-bars D D and in the needleeds.
  • Rocking needle-supports F F for both the front and back rows of needles are dropped and elevated by means of endwise-sliding sustaining-bars D D beneath them, supported at their ends in guideway-slots in the ends of the main frame.
  • These sustainingbars project beyond the main frame at its left end, so that they may be actuated by hand as desired. They have upon their under sides, near each end, (see Fig. 30,) inclined surfaces or cams f f, by the contact of which with the bottoms of the guideway-slots in the mainframe ends the sustaining-bars are raised and lowered as they are moved endwise.
  • the sustaining-bars occupy their normal positions for sustaining the rocking needle-supports in their elevated positions, these bars rest with their seats f f upon the bottoms of their guideway-slots in the frame ends, and when lowered the notched or cut-away parts f f of these bars rest upon the bottoms of their guideways.
  • the guideway-slot in the left end of the main frame for the back sustaining-bar D is made of a width su flioient to permit of the left end of this bar being given a slight sidewise movement, for a purpose in turn to be ex plained.
  • the ends of the needle-supports are pivotally connected with the under sides of the needle beds.
  • the two series of rocking levers F for supporting the jacks F of those needles of the back row which are on opposite sides of the central needles of this row are provided (see Fig. 27) with the lugs f f for engagement with the pattern cylinder F and are the same as heretofore.
  • Each of these levers is provided with the notch f in the bottom of its j ack-guideway, into which the rear end of the needle-jack descends When the lever is depressed to lower the shank or projection F Fig. 26, of the jack beneath the cams, which actuate the needles by contact with the needle jack projections.
  • the needlejacks F which are supported by the rocking levers F are cut away upon their under sides by being recessed, as at The solid portion F of the rear needle-bed from its front edge backward for about half its width is made of uniform thickness, and with its top surface parallel to its under surface. The rear top surface of this solid portion is inclined to provide for the downward movementof the needlejack when its cut-away portion eX tends above both the regular and the inclined surface of the solid portion of the needle-bed.
  • the cams G G are carried by the front main cam-slide C and by their reciprocation the needles of the front row are actuated.
  • the movable cam G is carried at the end of an arm g, pivotally connected with the front cam-slide and provided with an upwardlyprojecting lug G having a side pin 9 which engages with one or the other of two guidegrooves G G in the inner vertical wall of the lower front channel-plate C
  • the lug G passes through a slot in the front main cam-slide.
  • a switch-gate 9 At the left end of the guidegrooves G G there is pivoted between them a switch-gate 9 A laterally-projecting arm on this switch-gate is connected with a vertically moving controlling arm G which passes downward through the front needlebed and is pivotally connected at its lower end with a pivoted shoe 9, which rides at times in a groove G in the pattern-cylinder, and at times upon cams G G8 G during the actuations of the pattern-cylinder.
  • a spring 9-, hearing at its upper end against the under side of the needle-bed and pressing downward upon the vertically-moving controlling-arm G acts with a tendency to keep the shoe in its lowermost position at all times.
  • the switch-gate will be operated siX times during each revolution of the pattern-wheel, the switclrgate being elevated every time the shoe of the controllingarm rides up an incline of one of the cams G G or G, so as to cause the pin g to travel in the lowermost one of its two guides in the channel-bar, and to continue to travel in this guide while the shoe rides upon the surface of the cam.
  • the switch-gate will be lowered and the pin 9 will be transferred to the uppermost one of its two guideways. Changes of the switch-gate occur when the pin g is in the wide groove g.
  • the needles of the back row are actuated by cams H H, and a triangular cam H between the adjacent ends of the cams H H.
  • the movable cam II is carried by a pivoted arm h.
  • the cam-arm h is provided with an upwardly-projecting lug h,having a laterallyprojecting pin h working in guide-grooves H H having a switch-gate H at their left ends similar to the switch-gate employed for the cams for actuating the front needles.
  • This switch-gate is also actuated by a vertically-moving controlling-rod 7L pivotally connected at its lower end with a pivoted shoe 7L4, substantially similar to the corresponding parts employed for actuating the cams of the front needles.
  • This shoe 77 is acted upon by a spring 705, mounted upon the comb-frame II, with a tendency to keep the shoe down upon the pattern-cylinder at all times.
  • this cylinder are two grooves H 11 into which the shoe is depressed to draw down the switchgate H so that the cam ll will be controlled by the upper guide-groove H.
  • the cam H will be elevated so that the needlejacks will be acted upon in such a manner as to cause the back needles to reciprocate once for every reciprocation of the main cam-slides.
  • the left needle in the back row of needles b is automatically dropped and lifted at the beginning of the formation of a stocking by mechanism such as follows:
  • the rocking support f for this needle is cut away and provided with a cam f on its under side.
  • this needle-support rests with its regular or uncut under surface upon the back sustaining-bar D Vhen, however, this bar is moved sidewise, it is presented to the recessed part of the needle-support, to permit this support and its needle to rock downward, the support when down resting upon its sustaining-bar outside of its cam f.
  • a spring f bears upon the rocking needle-support f to insure its downward movement when this movement is permitted by the sidewise movement of the sustaining-bar and the withdrawal of the needle from the ledge D of guide-bar D.
  • a hook f having its shank mounted by the side of the needle-support, bears upon the needle, so that it is compelled to move downward with its support.
  • the shank of the hook f is shown as pivoted with the needle-support and as acted upon by the spring f
  • the sustaining-bar D Fig. 6 is moved laterally in one direction by a spring F and in the other direction by an elbow-levenF to which motion is imparted by the patterncylinder at the proper time for permitting of throwing the needle out of action.
  • This elbow-lever is provided with a cam end or incline f for acting upon the sustaining-bar D to move it in a direction contrary to that in which its spring moves it, and the opposite end of this lever, Figs. 0 and 12, is provided with a wiper-cam F acted upon by the periphery of the pattern-cylinder.
  • This elbow-lever is pivoted by a sleeve D upon a stud-shaft D supported by and projecting inwardly from the left end of the frame.
  • dropping-needle is actuated in such a manner that it is held down at the time that the yarncarrier is supplying the yarn above it upon its i first outward stroke in beginning the formation of a stocking, and then moved upward in position to engage the yarn supplied to it upon the return stroke of the yarn-carrier, this operation being well understood.
  • the sustainin g-bar is m oved laterally by the elbow-lever, it is temporarily retained in this position by the action of a dogginglever E which dogs the sustaining-bar after the elbow-lever is released.
  • This dogging lever is pivotally supported about midway its length and is acted upon by a spring E", Fig. 4, which draws down its shouldered end E when downward movement of this end is permitted.
  • the opposite end of the dogging-lever is acted upon by a tripping-rod 6, Figs. 1, i, and 17, actuated by a wipercam E, Figs. 1 and 1 carried by the back main camslide.
  • this tripping rod is depressed, correspondingly raising the end of the dogging-lever which acts on the sustaining-bar, thus leaving the sustaining-barfree to be actuated by its spring to be restored to its normal position beneath the dogginglever.
  • the pattern-cylinder is intermittingly actuated at the ends of strokes of the main camslides, by driving connections with the main actuating gear a in the manner next to be explained,
  • a shaft l suitably mounted in a sleeve-bearing i at the right end of the main frame, is geared with the cam-gear B by means of a star-pinion I.
  • This star-pinion is moved twice for each revolution of the canigear and is fast upon the shaft 1, which has imparted to it one revolution for each five revolutions of the actuating-gear and camgear as the mechanism is in this instance organized.
  • a pinion i is fast upon the shaft 1 for engagement with gear-teeth 1 upon the periphery of the pattern-cylinder at its right end.
  • a long tooth i is provided upon this pinion i for engagement at proper intervals with sliding segment-gears I 1 adapted to move at times independently of the patterneylinder.
  • the adjustable segment-gears I 1" are of similar formation, one of them being of greater extent than the other, and each adapted to be slid and held in position in an annular guideway J of the pattern-cylinder.
  • the segment-gear I has a segmental guide-flange J, shouldered at j and fitting so as to slide freely in the guideway J', formed at the right end of the patterncylinder, partly by a groove in the cylinder end and partly by the ring J riveted or otherwise suitably attached to the end of the cylinder.
  • a cross-pin j together with a series of pin-holes j in the pattern-cylinder, serve to limit the movement of the segment-gear I independently of the pattern-cylinder, in a forward clirection, or that in which the cylinder rotates, and another series of pin-holesj and a pin j behind the segment-gear, provide for adjusting the segment-gear in position relatively to the patterncylinder and to prevent backwardmovement of the segment-gear 1
  • This last-named pin and the openings in which it is secured in adjusting the segment-gear may be threaded to prevent accidental displacement of the adjusting-pin, or any equivalent means for adjusting may be provided.
  • Premature forward movement of the segmentgear I is prevent-ed by a yielding stop K.
  • the forward portion of the segment-gear is borne sidewise against by the stop, which is shown as formed by a spring-bar secured at one end to the inner surface of'the main frame at its right end, bent sidewise, so as to bear at K against the frame and having a cam projection or incline 7c, Fig. 2, against which the forward end of the segment-gear bears, and along in frictional contact with which this segment-gear is forced when positively operated, as will be obvious.
  • a screw 7% passing through the frame and engaging a screw-tap in the thickened end of the stop, Figs. 5 and 5, serves to adjust the stop and causes it to act with greater or less force in its resistance to the movement of the segment-gear to insure proper action by preventing accidental movement of the gear.
  • the long segment-gear I" is of construction similar to that of the segment-gear I, and is adjustably mounted in the pattern-cylinder in a corresponding manner, there being provided for this segment-gear I a front stop-pin Z in one of the series of holes f and a rear stop-pin l in one of the series of holes j.
  • the brake-stop K acts upon the segment-gear I in the same manner as upon the segment 1 ⁇ Vhen, upon the contact with the rear end of the segment-gear I of its adjusting-pin l, carried by the pattern-cylinder, this gear has been brought into position for engagement by the long tooth of the pinion 2", the pinion occupies an untoothed space L of the patterncylinder which had been presented to it at the completion of the actuations of the mechanism which control the widening of the stock The pinion will continue to rotate in this space without actuating the pattern-cylinder until the segment-gear becomes engaged with the pattern-cylinder by abutting against the front stop-pin Z, after which the cylinder continues to move step by step and the segment-gear becomes inoperative until it is again acted upon by its rear pin.
  • auxiliary mechanism such as soon to be described, by means of which any desired number of needles, which are not dependent upon the pattern-cylinder for their action, may be thrown
  • widening-needles are provided in series of corresponding numbers, respectively, at each end of both main rows of needles, there being in this instance nine needles in each series, or
  • the widening-needles h at the opposite ends of the front row of main needles I), and the widening-needles N, at the opposite ends of the rear row of needles W, are shown as supported and actuated in the following way: Rocking levers O O for the respective series M of the front widening- .needles are pivotally connected with the front needle-bed by-means of pivot-rods 0 Fig.
  • Jacks P for the respective series of front widening-needles are supported by the rocking levers O 0. These jacks are provided with shanks or upward projections 12, to be operated by the cams G G when these shanks are elevated to bring them under the control of the cams.
  • Reciprocating needlecontrolling cam-bars Q Q have corresponding inclines g upon their upper and under surfaces to constitute their cams, and, as in this instance shown, have actuating connection with the respective rocking levers O by means of links Q Q, which are pivotally connected at their lower ends with the rocking levers, and have slots (1 q endwise through which the controlling cam-bars work.
  • the slots q q are formed in the edges of the links of the respective series Q Q", near their upper ends.
  • rocking levers will be moved up or down, (they would be actuated in the same way were the controlling cambars passed through slots made directly in the levers,) according to the direction in which the cam-bars are moved in the desired order for throwing the wideningneedles into and out of action by bringing the shanks of their jacks into positions to be operated upon by the cams or withdrawing them from such positions, as will be obvious.
  • the reciprocating cam-bars Q Q work in a gnideway-groove Q, formed in the lower front channel-plate C and are retained therein by a suitable number of cross-pieces q, secured to the channel-plate above and below the guide-groove, which they span.
  • the controlling-links Q Q of the rocking levers reciprocate in guide grooves formed in the channel-plate C as plainly shown by the drawings.
  • the adjacent or inner ends of the reciprocating cam-bars Q Q are connected with each other by reversing mechanism. As shown, they have secured to them rack-bars Q, one above the other. Between these rackbars a pinion g gearing with both of them, is loosely mounted upon a stud g fixed to the channel-plate and projecting forwardly therefrom. This pinion is secured against displacement in suitable well-known way, and by means of it, when one of the cam-bars is moved in its guideway-slot, motion is imparted by the reversing mechanism to the other cam-bar to cause it to move in the opposite direction. In this way it will be seen that both cam-bars are moved inward simultaneously or outward simultaneously throughout the reciprocations imparted to them, as presently to be explained.
  • the rocking levers O O for supporting the jacks of the respective series N of rear widening-needles are of construction precisely similar to that of the rocking levers of the front widening-needles, and like them are provided with slotted controlling-links 0 to be actuated by the needle-controlling cam-bars 0 O in construction similar to Q Q, provided with reversing mechanism, such as the rack-bars

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)

Description

No Model.) 12 SheetsSheet 1.
A. NELSON, Decd.
P. NELSON. Administraiprix. KNITTING MACHINE. No. 562,553. Patented June 23, 1895.
w '9 3 Y 5 U WITNESSES I INVENTOR ."By Paa'rflttbrneys ANDREI-V BGRAMRM,PHUTOYLI'INQWASNINGTON. D C
A. NELSON, Decd.
P. NELSON, Administratrix. KNITTING MACHINE.
No. 562,553. Patented June 23,1896.
ANDREW B GRAHAM, PHOIUMTMO. WASHINGTON 0.C
-(N0 Mod l 12 SheetsSheet 3.
A. NELSON,.De0d'.
P. NELSON, Administrmtrix. KNITTING MACHINE.
No. 562,553 Patented June-23', 1896.
, WITNESSES d- K'W- 2/6 12 Sheets--Sheet 4: A. NELSON, Decd. 1
(N0'M0de1 P. NELSON; Administratrix. KNITTING MAGHI B.
No. 562,553. Patented June 23, 1896.
WITNESSES '5 @(i 6%: M. c-
(No Model.) 12 Sheets-Sheet 5 A. NELSON, Decd.
P. NELSON, Administratrix. KNITTING MACHINE.
No. 562,553. Patented June 23, 1896.
(No Model.) 12 Sheets--Shee=t s.
A. NELSON, Decd P. NELs N, Admihistratrix. KNITTING MACHINE.
No. 562,553. tented June 23, 1896.
Am! BJIRMMM."WOUND-WASHINGTON.DYC
'(No Model.) 12 sheets-sheet a.
A, NELSON, Decd'.
P NELSON, Admmlstratnx KNITTING MACHINE.
Patented June 23, 1896.
0w t e e h S S t e e h S H W 0 8 D N 0 S L E N A (No Model.)
P. NELSON, Administratrix. KNITTING MACHINE.
Patented June 23, 1896].
-|NVENTOR iii/red Weaa' 77/,
ANDREW RGRAHAM. PMOIO-UTNQWASNINGIONIC 12 Sheets Shet 10,
(No Model.)
' A. NELSON, Deod.'
P. NELSON, Administratrizi.
KNITTING MACHINE.
No Model.)
llo
12 ShetsSheet 11.
A. NELSON, Deod.
P. NELSON, Admipistratrix. KNITTING MACHINE.
Patented June 23, 1896.
By 726} Attorneys:
AN DREW BGRAHAM. PNOYOLIYPiOv WAS) NGTONJI C NiTE TATES Fries".
ALFRED NELSON, OF ROCKFORD, ILLINOIS; PIEDAD NELSON, ADMINISTRA- TRIX OF SAID ALFRED NELSON, DECEASED, ASSIGNOR TO RALPH EM- ERSON, IVM; A. TALCOTT, EVA C. NELSON, \VILLIAM NELSON, OSCAR NELSON, FRITIIIOF NELSON, AND JOHN FRANKLIN NELSON, OF SAME PLACE, IVILLIAM ZIOCK, OF S'l. LOUIS, MISSOURI, AND ANNA NELSON BECK, OF CHICAGO, ILLINOIS.
KNITTING-MACHINE.
SPECIFICATION forming part of Letters Patent No. 562,553, dated June 23, 1896.
Application filed May 23, 1885. Serial No. 166,481. (No model.)
To all whom it may concern:
Be it known that I, ALFRED NELSON, of Rockford, in the county of WVinnebago and State of Illinois, have invented certain new and useful Improvements in Knitting-Machines, of which the following is a specification.
This invention relates to improvements in machines of the class known as straight-row 1o knitting-machines, especially that type of this class of machines shown and described in United States Letters Patent No. 214:, 308, granted April 15, 1879, to John Nelson, and also in an application, Serial No. 165,7 31, for
I 5 United States Letters Patent for improve ments in knitting-machines invented by said Nelson, and filed May 16, 1885.
My object mainly is to improve the said John Nelson machines, and this invention relates principally to mechanism for gradually widening or enlarging tubular-knit fabrics,
such as the legs of stockings, the arms of shirts, &c.
My invention also relates to yarn-carrying mechanism and various details.
lhe subject-matter deemed novel will hereinafter be specifically designated by the claims.
In the accompanying drawings an appro- 3o priate organization of mechanism is shownfor knitting stockings, but, instead of using all the improvements thereby illustrated and hereinafter in detail described, essential fea-,
tures of these improvements may be employed 3 5 without the others, and the mechanism be modified in various ways without departing from the spirit of the invention herein claimed.
Figure 1 is a plan View of the machine. Fig.
2 is a front elevation. Fig. 3 is an elevation of the right end of the machine with the driving mechanism removed and the shaft for actuating the pattern cylinder in section.
Fig. l is an elevation of the left endof the 5 machine. Fig. 5 is a view, partly in elevation and partly in section, on the line 5 5 of Fig. 1, with the upper and lower parts of the mechanism broken away. Fig. 5 is a detail View showing particularly the adjustingscrew 70? of the yielding stop-arm K. Fig. 6 is a view, partly in elevation and partly in section, on the line 6 6 of Fig. 2, with the upper and lower parts of the mechanism broken away. Fig.7 is a plan View of the yarn-carrying mechanism. Fig. 8 is a front elevation of the same. Fig. 9 is a View, partly in elevation and partly in section, on the lines 9 9 of Figs. 7 and S. Fig. 10 is a section on the line 10 of Fig. 9. Fig. 11 is a front elevation of the main actuating-gear, with its bearingsleeve in section. Fig. 12 is an elevation of a device for actuating the dropping-needle and the mechanism which trips the pawls of the reciprocating needle-controlling rackbars. levers for tripping the pawls of the needlecontrolling reciprocating rack-bars. Fig. 14 is a front view of the upper portion of the machine with the yarn-carrying mechanism and other parts detached. Fig. 15 is a front elevation of the front needle-controlling reciprocating rack-bars. Fig. 16 shows a rear elevation of the actuating and holding pawls and the trippingrod thereof of the reciprocating controlling rack-bars for the front widening-needles. Fig. 17 is a view, partly in end elevation and partly in section, on the line 17 17 of Fig. 1. Fig. 18 is a bottom view of the left ends of the main cam-slides, the channel-plates, and the guide-bars, and some of the attachments thereof, representingparts of the mechanism for actuating the needlecontrolling reciprocating rack-bars to throw the widening-needles out of action. Fig. 19 is a view, partly in side elevation and partly in section, on the line 19 19 of Fig. 17. Fig. 20 is a view, partly in elevation and partly in section, on the line 20 20 of Fig. 1, representing the pattern-cylinder and attachments thereof. Fig. 21 is an elevation of the auxiliary wheel for controlling the mechanism for actuating the widening-needles with its tire Fig. 13 is a side elevation of one of the removed. Fig. 22 is a view showing a portion of the periphery of the pattern-cylinder flattened out. Fig. 23 is a similar View of the auxiliary wheel and its tire. Fig. 245 isa plan View of one of the cam-blocks of the auxiliary wheel detached. Fig. 25 is a section on the line 25 25 of Fig. 23. Fig. 26 is a side elevation of one of the needle-jacks of the back row of needles. Fig. 27 is a similar View of one of the rocking levers for supporting the needle-jacks of the needles of said row. Fig. 28 is a side elevation, partlyin section, designed to represent the manner of dropping the left needle of the back row of needles. Fig. 29 is a side elevation of one of the segment-gears of the pat tern-cylinder detached. Fig. 30isa front elevation of the sustaining-bar for raising and lowering the needles of the front row detached. Fig. 31 is a bottom view of a portion of the back main cam-slide with its attached cams, and Fig. 32 is a rear elevation of these devices with the parts in the same positions. Fig. 33 is a bottom View of a portion of the front main cam-slide and its attached cams, and Fig. 34 a front elevation of these devices with the parts in the same positions. Fig. 35 is a plan view, on an enlarged scale, of the sectional sliding saddle and connections thereof and the presser-hook cams. Fig. 36 is a view of one of the presser-hooks. Fig. 37 is a View, partly in elevation andpartly in section, showing details of the switch-gate-controlling mechanism for the cams which actuate the front needles.
In many respects the mechanism hereinafter referred to, and more or less fully described, is the same as embodied in the John Nelson knitting-machines above alluded to; but all mechanism similar to that of the said John Nelson machines is disclaimed by me.
That side of the machine at which the work is discharged, and from which a hand-wheel projects convenient to the right hand of the operator when facing the machine, is called the front, and the other the rear side, while the end on the right of the operator is termed the right and the other the left end of the machine throughout this specification.
The mechanism is mounted upon a suitable sectional main frame A. A drivingshaft A, extending transversely to the machine and suitably mounted at the right end thereof in the main frame, is provided with fast and loose pulleys to be driven in an obvious way from any appropriate motor. A hand-wheel A is secured to the front end of the driving-shaft, and this shaft is provided with a fast pinion a, which engages with a main actuating gearwheel a on a stud-axle a cast with a projecting portion or bracket B at the right end of the main frame. This gear-wheel a is cast with a sleeve-bearin g I), by which it is mounted upon its stud-axle. A cam-wheel or irregular snail-gear B is also formed with this sleeve for a purpose in turn to be explained.
A front needle-bed O and a rear needle-bed O are each slotted and provided with a slotted steel plate 0, to constitute guide-grooves for the front and rear rows of needles I) and 12 respectively, as well as for their jacks B B The bed-plates are inclined as heretofore and provided each with a lower lon gitu din allygrooved guide-bar or channel-plate 0 C and an upper longitudinally-grooved guide-bar or channel-plate C C A front main cam-slide C, and a back main cam-slide O rigidly connected bya yoke c, reciprocate longitudinally in their guideways in the front and back channel-plates. These main cam-slides carry cams for actuating the needles of the front row I) and the needles of the back row b respectively, to advance and retract them.
An elbow-lever c pivotallymounted upon the main-frame bracket by a stud 0 is connected at the upper end of its longer arm with a bracket 0 on the back main cam-slide C by means of a pitman 0 The other end, or the shorter arm of this elbow-lever, is linked by a connecting-rod b with a wristpin 19* 011 the gear-wheel Ct. The result of this construction is that the main cam-slides are caused to reciprocate together, or make two strokes for each revolution of their actuating-gear a, and to operate the two rows of needles by their cams, farther on to be described.
Alternating carriers A D for the thread employed in knitting, (the thread may be of yarn, cotton, silk, &c.,) which carriers will hereinafter be termed yarn-carriers, are similarly constructed, and are supported, and thrown into and out of engagement with their actuating mechanism, so as to be reciproeated by turns, as and for a purpose farther on to be explained.
Each of the alternatel y-actin g yarn-carriers is mounted to reciprocate over the central opening d, across which the needles are projected and retracted, and moves in a path transversely to the paths traveled by the needles, as is well understood.
The yarn-carriers are actuated in the desired order by connections with a slide 13*, to which the proper reciprocating movement is imparted, as farther on explained. This aetuating-slide 13 carries a controlling-arm B forming a part of the mechanism which connects it alternately with the yarn-carriers. A sliding saddle I) is reciprocated by connection, as next to be described, with the actuating-slide of the yarn-carriers and is guided in ways formed in the adjacent or inner edges of guide-bars D D, secured to the needlebeds over their inner edges above and 011 opposite sides of the central opening d.
The saddle is made in two sections 1) If, united by a cross-piece or connecting-plate D and connected with the actuating-slide by means of an inwardly-projecting base extension or connecting-piece B of the controllingarm 13. This connecting-piece B detachably interlocks with the sliding saddle by fitting in a space provided between the shoulder IIO formed by the connecting-plate D and an attached lug i of the section b of the saddle, as clearly shown by the drawings.
The front section Z) of the sliding saddle is provided with two horns (Z d for opening the latches of the back row of needles, Fig. 35, and the rear section b of the saddle is provided with a horn (Z3 for opening the latches of the front row of needles on the outward stroke of the main cam-slides, (the stroke toward the left end of the machine.) As the needles of the back row at times both advance and retract at each stroke of the yarn-carrier and the sliding saddle, or make two reciprocations for every reciprocation of the yarn-carrier, the sliding saddle, the main cam-slides, and the cams E E for actuating the front and rear presserhooks D D it is essential that the same order of action of the yarn-carrier, the sliding saddle, the needles of the back row and their cooperatingpresser-hooks D shall be maintained at such times, thus necessitating the reversal of the relative positions of these parts at each stroke. Were it not for this reversal in the relative positions of the parts, it is obvious that the retracting movement of the needles of the back row to the proper extent to receive yarn upon their open latches and theaction of the back presser hooks (the details of which and their actuating mechanism will soon be described) would occur in advance of the proper order during those operations of the mechanism when the needles of the back row are making two reciprocations for each reciprocation of the main camslides and the cam which actuates the back presser-hooks. The result of thus maintaining the order of operation of the yarn-carrier and the reciprocating saddle, and the needles of the back row and their cooperating presser-hooks, obviously is that the yarn is always laid upon the open latches of the needles while they are retracting and while their cooperating presser-hooks are elevated preparatory to descending upon the yarn at the completion of the downward stroke of the needles.
I11 the organization of mechanism shown the shifting of parts, so as to reverse their relative positions at the end of each stroke of the main cam-slides, and the cams for operating the presser-hooks, is accomplished by causing the main cam-slides to move a short distance after the yarn-carrier, the sliding saddle, and the cam for actuating the back presser-hooks have finished their stroke, and by causing the cam for operatingthe back presser-hooks to begin its return stroke shortly after the yarn-carrier, the sliding saddle, and the main cam-slideshave commenced another stroke.
It should be borne in mind that, as in the before-mentioned John Nelson machines, the front needles I) make one reciprocation for each reciprocation of their actuating-cams carried by the front cam-slide O and that these needles operate only when circular work is being done, they being thrown out of acmain cam-slide, at the time of heel and toe knitting, make but one reciprocation for each reciprocation .of their actuating-cams during circular knitting, at the time the frontneedles are working. It consequently follows that the change in the position of parts relatively to each other, as above described, is not necessary so far as the front needles, their cooperating presser-hooks, their actuatingcams, and the yarn-carrier, and the horn (i are concerned. Nor is it necessary that the change should take place in the relative positions of the yarn-carrier, the horns d (P, the cams for actuating the back row of needles, and the cam for actuating the back presser-hooks, at the time that the needles of the back row are making but one reciprocation for each reciprocation of their actuatingcams. Nevertheless, as the parts are organized these changes occur throughout the operation of the machine and do not interfere in the least with the proper working of the mechanism at times when such changes effect no result.
The shifting mechanism employed for maintaining the above-described order of operation of parts is as follows: The gear-wheel a is provided on its front face (the face opposite that from which the wrist-pin b projects) with a cam-groove A in which works a pin b which is provided with a roller on theupper end of a lever A which is pivotally supported intermediate its ends by a stud a on the main-frame bracket B and at its lower end is forked or slotted, and has self-adjusting jointed connection with the lower end of a lever A, mounted upon the before-described elbow-lever c by means of a pivot a. A pivot-pin a at the lower end of the lever A is provided with a roller which enters the slot in the lower end of the lever A, making the needed self-adjusting connection of these levers. At its upper end the lever A is connected by a link or pitman A with the yarncarrier-actuatin g slide B. The result of this construction is that while the roller upon the pin 11 travels that portion of the cam-groove extending from 1 to 2 (see Fig. 11) the yarncarrier-actuating slide will make the outward stroke of a reciprocation, and move correspondingly with the main cam-slides. Next, while that portion of the cam-groove extending from 2 to 3is acting on the roller the yarncarrier-actuatin g slide remains at rest, though there is no pause in the movement of the main cam-slides other than that which takes place at the dead-center point of their stroke. Next, while that portion of the cam-groove extending from 3 to 4B is acting upon the roller of the lever A the inward stroke (the stroke toward the right end of the machine) of the yarn'carrieractuating slide takes place simultaneously with the corresponding stroke of the main camslides, and at the completion of this inward stroke the yarn-carrier-actuating slide again comes to rest while that portion of the cam-groove extending from 4 to 1 acts upon the roller, the main cam-slides continuing to move, except when pausing at the dead-center of their stroke, during this cessation in the operation of the yarn-carrier-actuating slide. Next, the yarn-carrier-actuating slide is again moved outward with the main cam-slides at the commencement of another revolution of the gear-wheel a.
The yarn-carrier-aetuating slide 13' is supported or carried by and reciprocates in a suitable guideway Z2 formed in the bracket 0 on the back main cam-slide. The controlling-arm B is formed with a curved upper end 1), adapted to engage with a sleeve-slide B carried by a rock-shaft B, with which it is engaged by means of a groove a and feather b (see Fig. 10,) so that while free to slide along this rock-shaft it is compelled to turn therewith, as is well understood. The curved upper end of the controllin g-arm rests in an annular recess or bearing 13, formed between adjustable collars b Z) of the sleeveslide. These collars are secured in place by means of set-screws 0 The rock-shaft B is supported at its opposite ends in bearings in upright frame-arms 13 B A lug a pro- 3' ectin g downwardly from the sleeve-slide, engages with one or other of two supportingslides A A", to which the yarn-carriers D A are respectively attached. Recesses in the respective supporting-slides alternately receive the lug a when these slides are to be interlocked with the sleeve-slide. These supporting-slides are carried by and reciprocate along parallel guide bars A A. These guide-bars are secured at their opposite ends to the frame-arms 13 B and have a space between them.
The eyes d d of the yarn-carriers, through which the yarn passes to be supplied to the needles, are formed at the lower ends of pivotally-supported arms (1 constituting the yarn-carriers proper. At their upper ends these arms have hinged connection by means of the pivots c c with the supporting-slides A A", respectively.
A spring a acts upon each yarn-carrier with a tendency to keep it in its working position, the movement of the yarn-carrier in the direction in which its spring presses it being limited by an adjustable set-screw a".
A pointed inclined sided separating-horn a secured to the right frame-upright B acts upon the yarn-carriers at the inner ends of their strokes, so as to move them sidewise slightly against the action of their springs, in order that the yarn-carrier, which is out of operation, will be prevented from interfering with the reciprocating yarn -carrier. The yarn-carrier arms, as in this instance shown, are each composed of two sections. The lower arm cl or yarn-carrier proper is removably connected by screws 0 with an upper section C, which is hinged to its supporting-slide. The upper sections 0 of the yarn-carrier arms are of plate form adapted to bear in recesses in their respective supportingslides, as plainly shown in Figs. 8 and 9.
The rock-shaft B is automatically actuated at proper intervals to throw one yarn-carrier out of action and the other into action, in order that a yarn-carrier A supplied with thick or heavy yarn, may be thrown. into action, and the other yarn-carrier, D, supplied with lighter yarn, may be thrown out of action, or vice versa, according to whether the heel or the tee is being formed, requiring the heavy yarn, or the foot or leg portion of the stocking is being knitted with lighter yarn. If preferred, diiferent-colored yarns may be used, and they may be of corresponding weight, if desired. The mechanism in this instance employed for alternating the yarn carriers is as follows:
An elbow-lever C for actuating the rockshaft B of the yarn-carrier mechanism is pivotally supported by the frame-stud c and carries at the end of its lower or shorter arm a pin 0 which may be provided with a roller, entering a cam-groove C in the outer face of a ring J attached to the right end of the pattern-cylinder, and hereinafter more particularly described.
At its upper end the elbow-leverhas jointed connection with the right end of the rockshaft by means of a slotted lug 0 secured by a sleeve to the rock-shaft, and a pin on the elbow-lever entering the slot of said lug. A spring-metal star-shaped washer C and a securing-pin serve to properly hold the elbowlever upon its stud 0 The movement imparted to the patterncylinder, as farther on to be described, causes the cam-groove to act five times upon the pin of the elbow-lever for each complete revolution of the pattern-cylinder, the inclines or cam-surfaces d d7 d cl d acting in turn upon the elbow-lever pin. During the time that portion of the cam-groove between the inclines (Z d is acting upon the pin of the elbow-lever, the yarn-carrier D, which is supplied with heavy yarn, is in action for knitting the toe of a stocking. When the camincline d acts upon the elbow-lever, the rockshaft is actuated to disengage the lug of the sleeve-slide B from the supporting-slide A, and engage it with the supporting-slide A which, during the action of the yarn-carrier D, was at rest at the right end of its path of movement against the horn a hen that portion of the cam-groove extending from the incline d to the incline d? is acting upon the elbow-lever, the foot of the stocking is being worked. \Vhen the incline al acts upon the elbow-lever, the sleeve-slide is disengaged from the supporting-slide A and again engaged with the supporting-slide A for knitting the heel. The action of the incline 01 upon the elbow-lever alternates the yarn-carriers, the yarn-carrier A provided IOf with the lighter yarn, being thrown into action for knitting the leg, during the time that the elbow-lever pin is engaged with that portion of the cam-groove extending from d to d". By the action of the incline 01 upon the elbowlever the yarn-carrier D is thrown out of action, the movement imparted to the rockshaft by the action of the incline d being such that the lug of the sleeve-slide is moved into a position between the supportingslides. Both yarn-carriers remain out of action during the time that the portion of the camgroove extending from d to al is acting upon theelbow-lever, (a stocking having been completed,) and when the incline d acts upon the elbow-lever the yarn-carrier D is thrown into action for commencing to knit the toe of another stocking. The yarn-carriers are thrown into and out of action at the ends of their strokes inward or to the right. I
Devices the same as shown and described in the before-mentioned application, Serial No. 165,731, are provided for shifting the position of the cam E for actuating the back presserhooks relatively to the yarn-carrier in action. These devices and the cam E are as follows: The main slide or section e of the cam moves in a guideway e in the upper rear channelplate O and is provided with a cam-recess e The other slide or section 6 of this cam reciprocates in its guide-groove e in the back guide-bar D, and is provided with a projection corresponding with the cam-recess e of the main section. Levers or controlling arms (1 of the back presser-hooks project between the two sections of their actuating-cam, and are of a width about corresponding with the space formed between the recess of the main section and the projection of the other section of the cam. The connecting-piece B has upon its under side a downwardly-projecting lug (1 which enters a recess between upwardly-projecting lugs D D of the main section of the cam. The space between these lugs is of a length sufficient to allow of the necessary amount of play of the lug d at the time of shifting. The small section 6 of the cam is provided with an upwardly-projecting lug e, which enters a recess in the under side of the connecting-piece B formed between (lownwardly-projecting lugs f f This re cess corresponds approximately with the space between the lugs on the main section of the cam. It will be understood that at the end of each stroke the presser-hook cam will be left in a position such that it will not be moved at first upon the commencement of the next stroke of the actuating-slide of the yarncarrier, thus providing for shifting upon each stroke of the yarn-carrier and main camslides. The cam E for actuating the front set of presser-hooks is the same in all respects as that for operating the back set of presserhooks, except that ithas detachable rigid connect-ion with the saddle B by a bracket e secured to the saddle-section Z), instead of having a shifting connection, so as to be adj 11stable automatically relatively to the yarn-carrier. The downwardly-projecting outer end of the bracket e engages a recess in the main section of the cam E, and downwardly-projecting lugs 12 19 of this bracket embrace the lug of the small cam-section C.
It will, of course, be understood that the presser-hooks are supported by their pivotrods a a and work in guide-grooves in the {)espective guide-bars D D and in the needleeds.
Rocking needle-supports F F for both the front and back rows of needles are dropped and elevated by means of endwise-sliding sustaining-bars D D beneath them, supported at their ends in guideway-slots in the ends of the main frame. These sustainingbars project beyond the main frame at its left end, so that they may be actuated by hand as desired. They have upon their under sides, near each end, (see Fig. 30,) inclined surfaces or cams f f, by the contact of which with the bottoms of the guideway-slots in the mainframe ends the sustaining-bars are raised and lowered as they are moved endwise. hen the sustaining-bars occupy their normal positions for sustaining the rocking needle-supports in their elevated positions, these bars rest with their seats f f upon the bottoms of their guideway-slots in the frame ends, and when lowered the notched or cut-away parts f f of these bars rest upon the bottoms of their guideways. The guideway-slot in the left end of the main frame for the back sustaining-bar D is made of a width su flioient to permit of the left end of this bar being given a slight sidewise movement, for a purpose in turn to be ex plained. The ends of the needle-supports are pivotally connected with the under sides of the needle beds.
The two series of rocking levers F for supporting the jacks F of those needles of the back row which are on opposite sides of the central needles of this row are provided (see Fig. 27) with the lugs f f for engagement with the pattern cylinder F and are the same as heretofore. Each of these levers is provided with the notch f in the bottom of its j ack-guideway, into which the rear end of the needle-jack descends When the lever is depressed to lower the shank or projection F Fig. 26, of the jack beneath the cams, which actuate the needles by contact with the needle jack projections. The needlejacks F, which are supported by the rocking levers F are cut away upon their under sides by being recessed, as at The solid portion F of the rear needle-bed from its front edge backward for about half its width is made of uniform thickness, and with its top surface parallel to its under surface. The rear top surface of this solid portion is inclined to provide for the downward movementof the needlejack when its cut-away portion eX tends above both the regular and the inclined surface of the solid portion of the needle-bed. The cams G G are carried by the front main cam-slide C and by their reciprocation the needles of the front row are actuated. The movable cam G is carried at the end of an arm g, pivotally connected with the front cam-slide and provided with an upwardlyprojecting lug G having a side pin 9 which engages with one or the other of two guidegrooves G G in the inner vertical wall of the lower front channel-plate C The lug G passes through a slot in the front main cam-slide. At the left end of the guidegrooves G G there is pivoted between them a switch-gate 9 A laterally-projecting arm on this switch-gate is connected with a vertically moving controlling arm G which passes downward through the front needlebed and is pivotally connected at its lower end with a pivoted shoe 9, which rides at times in a groove G in the pattern-cylinder, and at times upon cams G G8 G during the actuations of the pattern-cylinder. A spring 9-, hearing at its upper end against the under side of the needle-bed and pressing downward upon the vertically-moving controlling-arm G acts with a tendency to keep the shoe in its lowermost position at all times. It will be seen that the switch-gate will be operated siX times during each revolution of the pattern-wheel, the switclrgate being elevated every time the shoe of the controllingarm rides up an incline of one of the cams G G or G, so as to cause the pin g to travel in the lowermost one of its two guides in the channel-bar, and to continue to travel in this guide while the shoe rides upon the surface of the cam. When the shoe descends the incline of the cam upon which it has been op erating, the switch-gate will be lowered and the pin 9 will be transferred to the uppermost one of its two guideways. Changes of the switch-gate occur when the pin g is in the wide groove g. The result of this operation is that while the upper guide-groove controls the movements of the cam G, the front row of needles will be thrown out of action, because the projections of the needlejacks of this row of needles will remain behind the two cams G G, passing beneath the cam G, and when the lower guide-groove controls the cam G it will be depressed so that the needle-jacks will be transferred from behind the cam G to the front of the cam G" at each stroke during the reciprocations of the main cam-slides, thus causing the needles to reciprocate once during each reciprocation of these cam-slides.
The needles of the back row are actuated by cams H H, and a triangular cam H between the adjacent ends of the cams H H. The movable cam II is carried by a pivoted arm h. The cam-arm h is provided with an upwardly-projecting lug h,having a laterallyprojecting pin h working in guide-grooves H H having a switch-gate H at their left ends similar to the switch-gate employed for the cams for actuating the front needles. This switch-gate is also actuated by a vertically-moving controlling-rod 7L pivotally connected at its lower end with a pivoted shoe 7L4, substantially similar to the corresponding parts employed for actuating the cams of the front needles. This shoe 77, is acted upon by a spring 705, mounted upon the comb-frame II, with a tendency to keep the shoe down upon the pattern-cylinder at all times. In this cylinder are two grooves H 11 into which the shoe is depressed to draw down the switchgate H so that the cam ll will be controlled by the upper guide-groove H. At this time the cam H will be elevated so that the needlejacks will be acted upon in such a manner as to cause the back needles to reciprocate once for every reciprocation of the main cam-slides. WVhen the shoe of the controlling-rod is acted upon by the ungrooved portions of the pattern-cylinder, the switch-gate is actuated in such a manner that the cam II is controlled by the lower guide-groove H At this time the cam H is depressed, and the result is that the back needles make one reciprocation for each stroke of the main cam-slides.
The left needle in the back row of needles b is automatically dropped and lifted at the beginning of the formation of a stocking by mechanism such as follows: The rocking support f for this needle is cut away and provided with a cam f on its under side. Normally this needle-support rests with its regular or uncut under surface upon the back sustaining-bar D Vhen, however, this bar is moved sidewise, it is presented to the recessed part of the needle-support, to permit this support and its needle to rock downward, the support when down resting upon its sustaining-bar outside of its cam f. A spring f bears upon the rocking needle-support f to insure its downward movement when this movement is permitted by the sidewise movement of the sustaining-bar and the withdrawal of the needle from the ledge D of guide-bar D. A hook f having its shank mounted by the side of the needle-support, bears upon the needle, so that it is compelled to move downward with its support. The shank of the hook f is shown as pivoted with the needle-support and as acted upon by the spring f The sustaining-bar D Fig. 6, is moved laterally in one direction by a spring F and in the other direction by an elbow-levenF to which motion is imparted by the patterncylinder at the proper time for permitting of throwing the needle out of action. This elbow-lever, as shown, is provided with a cam end or incline f for acting upon the sustaining-bar D to move it in a direction contrary to that in which its spring moves it, and the opposite end of this lever, Figs. 0 and 12, is provided with a wiper-cam F acted upon by the periphery of the pattern-cylinder. This elbow-lever is pivoted by a sleeve D upon a stud-shaft D supported by and projecting inwardly from the left end of the frame. The
dropping-needle is actuated in such a manner that it is held down at the time that the yarncarrier is supplying the yarn above it upon its i first outward stroke in beginning the formation of a stocking, and then moved upward in position to engage the yarn supplied to it upon the return stroke of the yarn-carrier, this operation being well understood.
lVhcn the sustainin g-bar is m oved laterally by the elbow-lever, it is temporarily retained in this position by the action of a dogginglever E which dogs the sustaining-bar after the elbow-lever is released. This dogging lever is pivotally supported about midway its length and is acted upon by a spring E", Fig. 4, which draws down its shouldered end E when downward movement of this end is permitted. The opposite end of the dogging-lever is acted upon by a tripping-rod 6, Figs. 1, i, and 17, actuated by a wipercam E, Figs. 1 and 1 carried by the back main camslide. At the proper time for elevating the dropping needle this tripping rod is depressed, correspondingly raising the end of the dogging-lever which acts on the sustaining-bar, thus leaving the sustaining-barfree to be actuated by its spring to be restored to its normal position beneath the dogginglever.
The pattern-cylinder is intermittingly actuated at the ends of strokes of the main camslides, by driving connections with the main actuating gear a in the manner next to be explained, A shaft l, suitably mounted in a sleeve-bearing i at the right end of the main frame, is geared with the cam-gear B by means of a star-pinion I. This star-pinion is moved twice for each revolution of the canigear and is fast upon the shaft 1, which has imparted to it one revolution for each five revolutions of the actuating-gear and camgear as the mechanism is in this instance organized. A pinion i is fast upon the shaft 1 for engagement with gear-teeth 1 upon the periphery of the pattern-cylinder at its right end. A long tooth i is provided upon this pinion i for engagement at proper intervals with sliding segment-gears I 1 adapted to move at times independently of the patterneylinder. These segment-gears have adjustable connection with the pattern-cylinder, so
that their teeth, no matter in what positions they may be adjusted for action, will form continuations of or register with the teeth of the pattern-cylinder gear 1 The adjustable segment-gears I 1" are of similar formation, one of them being of greater extent than the other, and each adapted to be slid and held in position in an annular guideway J of the pattern-cylinder. The segment-gear I has a segmental guide-flange J, shouldered at j and fitting so as to slide freely in the guideway J', formed at the right end of the patterncylinder, partly by a groove in the cylinder end and partly by the ring J riveted or otherwise suitably attached to the end of the cylinder. The shoulder j of the segmentgear projects beneath the toothed end of the pattern-cylinder, so that the segment-gear teeth and the teeth of the pattern-gear will be flush with each other, and the segmentgear be prevented from displacement. A cross-pin j, together with a series of pin-holes j in the pattern-cylinder, serve to limit the movement of the segment-gear I independently of the pattern-cylinder, in a forward clirection, or that in which the cylinder rotates, and another series of pin-holesj and a pin j behind the segment-gear, provide for adjusting the segment-gear in position relatively to the patterncylinder and to prevent backwardmovement of the segment-gear 1 This last-named pin and the openings in which it is secured in adjusting the segment-gear may be threaded to prevent accidental displacement of the adjusting-pin, or any equivalent means for adjusting may be provided. Premature forward movement of the segmentgear I is prevent-ed by a yielding stop K. The forward portion of the segment-gear is borne sidewise against by the stop, which is shown as formed by a spring-bar secured at one end to the inner surface of'the main frame at its right end, bent sidewise, so as to bear at K against the frame and having a cam projection or incline 7c, Fig. 2, against which the forward end of the segment-gear bears, and along in frictional contact with which this segment-gear is forced when positively operated, as will be obvious. A screw 7%, passing through the frame and engaging a screw-tap in the thickened end of the stop, Figs. 5 and 5, serves to adjust the stop and causes it to act with greater or less force in its resistance to the movement of the segment-gear to insure proper action by preventing accidental movement of the gear.
It will be seen that when, during the actuation of the pattern-cylinder, this cylinder has been brought to a position such that the cross-pin j abuts against the rear end of the segment-gear, this gear is forced to partake of the forward movement of the pattern-cylinder, and is thus moved into position to be acted upon by the long teeth of the pinion 2", with the result that as this segm ent-gear is intermittingly operated by this long tooth, and during a period of rest of the pattern-cylinder caused as presently to be explained, it will be moved forward the distance of one of its teeth every time the pinion makes one revolution until it has been fed forward a distance such as to cause its forward end to strike the stop-pin j. During the time or more or less of the latter portion of the time that the long teeth of the pinion i" is acting upon the segment-gear I to feed it independently of the pattern-cylinder an untoothed space L of the pattern-cylinder is occupied by the pinion,the pattern-cylinder gear being mutilated by the omission of one teeth at this space. At this time the pattern-cyh inder is at rest, the period of rest of the pattern-cylinder, which occurs during the occupancy of the space L by the pinion, dependin g upon the adjustment of the segm ent-gear.
3 5 ing.
50 into and out of operation.
55 thirty-six in all.
5 is first imparted to the pattern-cylinder by way of this segment-gear, as will be obvious, and after this the pinion acts upon the gear of the pattern-cylinder while the heel of a stocking is being formed and until an un- 10 toothed space L of the cylinder-gear is occu pied by the pinion, when the cylinder comes to rest again and the ankle and graduallyenlarged leg portions of the stocking are formed during this interval of rest by the I 5 actuations of mechanism such as soon to be described.
The long segment-gear I" is of construction similar to that of the segment-gear I, and is adjustably mounted in the pattern-cylinder in a corresponding manner, there being provided for this segment-gear I a front stop-pin Z in one of the series of holes f and a rear stop-pin l in one of the series of holes j. The brake-stop K acts upon the segment-gear I in the same manner as upon the segment 1 \Vhen, upon the contact with the rear end of the segment-gear I of its adjusting-pin l, carried by the pattern-cylinder, this gear has been brought into position for engagement by the long tooth of the pinion 2", the pinion occupies an untoothed space L of the patterncylinder which had been presented to it at the completion of the actuations of the mechanism which control the widening of the stock The pinion will continue to rotate in this space without actuating the pattern-cylinder until the segment-gear becomes engaged with the pattern-cylinder by abutting against the front stop-pin Z, after which the cylinder continues to move step by step and the segment-gear becomes inoperative until it is again acted upon by its rear pin.
In order to provide for controlling the widening of the work independently of the patterincylinder, I have devised auxiliary mechanism, such as soon to be described, by means of which any desired number of needles, which are not dependent upon the pattern-cylinder for their action, may be thrown As shown, widening-needles are provided in series of corresponding numbers, respectively, at each end of both main rows of needles, there being in this instance nine needles in each series, or The widening-needles h at the opposite ends of the front row of main needles I), and the widening-needles N, at the opposite ends of the rear row of needles W, are shown as supported and actuated in the following way: Rocking levers O O for the respective series M of the front widening- .needles are pivotally connected with the front needle-bed by-means of pivot-rods 0 Fig. 15, passing through holes 0 in them, and through corresponding holes in brackets O 0 secured to the needle-bed, Fig. 14-. Jacks P for the respective series of front widening-needles are supported by the rocking levers O 0. These jacks are provided with shanks or upward projections 12, to be operated by the cams G G when these shanks are elevated to bring them under the control of the cams. Reciprocating needlecontrolling cam-bars Q Q have corresponding inclines g upon their upper and under surfaces to constitute their cams, and, as in this instance shown, have actuating connection with the respective rocking levers O by means of links Q Q, which are pivotally connected at their lower ends with the rocking levers, and have slots (1 q endwise through which the controlling cam-bars work. The slots q q are formed in the edges of the links of the respective series Q Q", near their upper ends. The rocking levers will be moved up or down, (they would be actuated in the same way were the controlling cambars passed through slots made directly in the levers,) according to the direction in which the cam-bars are moved in the desired order for throwing the wideningneedles into and out of action by bringing the shanks of their jacks into positions to be operated upon by the cams or withdrawing them from such positions, as will be obvious.
The reciprocating cam-bars Q Q work in a gnideway-groove Q, formed in the lower front channel-plate C and are retained therein by a suitable number of cross-pieces q, secured to the channel-plate above and below the guide-groove, which they span. The controlling-links Q Q of the rocking levers reciprocate in guide grooves formed in the channel-plate C as plainly shown by the drawings.
The adjacent or inner ends of the reciprocating cam-bars Q Q are connected with each other by reversing mechanism. As shown, they have secured to them rack-bars Q, one above the other. Between these rackbars a pinion g gearing with both of them, is loosely mounted upon a stud g fixed to the channel-plate and projecting forwardly therefrom. This pinion is secured against displacement in suitable well-known way, and by means of it, when one of the cam-bars is moved in its guideway-slot, motion is imparted by the reversing mechanism to the other cam-bar to cause it to move in the opposite direction. In this way it will be seen that both cam-bars are moved inward simultaneously or outward simultaneously throughout the reciprocations imparted to them, as presently to be explained.
The rocking levers O O for supporting the jacks of the respective series N of rear widening-needles are of construction precisely similar to that of the rocking levers of the front widening-needles, and like them are provided with slotted controlling-links 0 to be actuated by the needle-controlling cam-bars 0 O in construction similar to Q Q, provided with reversing mechanism, such as the rack-bars
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