US1606378A - Straight-bar knitting machine - Google Patents

Description

Nov. 9 1926.. 1,506,378

E. A. NOBLE STRAIGHT BAR KNITTING MACHINE Filed Dec. 21 1923 3 Sheets-Sheet 1 E. A. NOBLE STRAIGHT BAR KNITTING MACHINE f m w m Nov.- 9 I926.

E'. A. NOBLE STRAIGHT BAR KNITTING MACHINE Filed Dec. 21 1923 3 Sheets-Sheet 5 i Patented Nov. 9, 1926.

UNITED STATES 1,606,378 PATENT OFFICE.

EMILE ARSENE NOBLE, OF TBOYES, FRANCE, ASSIGNOR TO SOCIETE ANONYME DES ETABLISSEMENTS' DlitLOS'IAI: FRERES, 0F TROYES, AUIBE, FRANCE.

STRAIGHT-BAR KNITTING MACHINE.

Application filed'Decmeber 21, 1923, Serial is equal in each group to that of the thread carrier bars and secured to each end of the looping bar, each of said two groups actlng in a given direction.

2.-A mechanism for returning the arms and changing the carrier bars permittingto automatically effect the various consecutiveoperations on a piece of goods by actuating one or more carrier bars.

3.A- disposition for guiding and strengthening the carrier bars at'their ends by the adaptation of sheathing or lining locking of said bars.

thereto which receives-the efforts caused by the thrust, the impact of the'stops and the 4.The arrangement below the bars of the stops and the locking devices for obtain ng the partial strokes of the carrier bars for carrying on, for instance, the heeling, spl1cing, or knitting of the upper part of the foot; as well as the unhooking'of the locks for the departure of the carrier bars and the optional suppression of the stops allowing the bars to stroke between the outer selvedges.

The said entraining arrangement allows of operating one or more carrier bars by means of a single device, thus replacing the counters and the striping apparatus actuating but a single bar. and the frictionentraining devices used with the additional thread carriers for heels and splicing. The use of the said arrangement "requires a special type of guides and of strengthening means for the bars, forming guideways at the ends thereof, and a special disposition of removable stops for the heels and other reduced strokes of the thread carriers, the

practical arrangement of said 'stopofiering substantial tappets and provides for a reliable locking,'while eliminating all vibration of the thread carriers. In certain.

known knitting machines the carrier-bars are'drawnalong by friction bymeans of devices cooperating with the looping bar and drawn along with it. Said arrangement re- No. 682,051, and in France January 5, 1923.

,sults'in considerable friction losses and requires an exaggerated expense of power, es-v pecially for low stroke operations. Moreover, said means together with the stopping and locking devices are scattered throughout the whole length of the bars, which hinders the passage of the yarns and complicates the setting up of the stop and lock carrying means.

The appended drawing shows ,by way of example a constructional form of the en-'v training device according to our invention, as applied to a cotton knltting machlne of the plain stitch type fornarrowed hosieries wherein the working of the thread carriers offers the greatest variation, this manufacture requiring in "some cases as many as five bars on various strokes for forming the loops otthe same row.

,Figs. 1 and 3 are elevational views of the entraininl device, .on both sides thereof, and Fig. 2 is a side view of the same. i

0 Fig. 4 s an elevational view of the lock- ,ing devlces and stops, with parts broken away.

Fig. 5 is a section on the line A-A of Fig. 4 showing the guides and the strengthenings of the carrier bars.

Figs. 6-, 7, 8, 9 show the mechanismior changing the carrier bars, in side elevation.

Fig. 10 is a front view and Fig. 11 a plan view of the same. 3

in device. a

Fig. 13 shows an arran ement by which the cylinders are replaced of the carrier bars, are pivoted upon an axle,

and are mounted on a movable common frame 2. They are maintained by the rods 3 set under the action of push springs 4 and engaging V-shaped notches made in said fingers. There aretwo frames 2 and they Fig. 12 is a modified form of the entrainby an attachment are connected respectively by the supports 5 Y to each end of the looping bar and guided by a fixed guideway 6. The thrust upon the carrier bars 7 takes place through the medium of the screws 8 mounted upon the said bars. The said screws serve to adjust the distance between the thread carriers and amount of thrust.

According to the preceding, the frames 2 provided with the fingers 1. will be. drawn along bythe slur-cock throughout the whole stroke thereof and each of said frames impels in a given direction one or more carrier bars by means of those of the fingers 1 which are inthe lower position.

The various control of the entraining operations of the carrier bars is'as follows:

When one of the actuated carrier bars engages its stop-piece, the fingerl willpivot about, thus releasing the rod 3 from the notch of said finger, and the latterwill as-- sume the position shown in Fig. 3 which it maintains during the return stroke. At the end of this return stroke, thesaid fingers engage the strikers 12, Figs. 6, 10 and 11,

which bear upon a stationary edge of the fixed support 16 and return saidfingers into their operative position. If the said strikers are in the raised position, as shown in 12, Figs. 10 and 11, they will recede under the pressure of the fingers, thus com pressing the springs 13; in this event the said fingers will not be turned down and will not be operative during their return stroke.

The operation of raising or lowering the said strikers 12 is obtained, at each end of the machine, by means of the cams 15 mounted upon a cylinder 17 and controlling the strikers through the medium of the levers 14. Both cylinders 17 are keyed to each end of a shaft 18 and they will act by the same disposition of cams 15 in order to raise or lower the same strikers whereby the same bars are actuated in either direction.

The two cam cylinders remain stationary,

being held by a ratchet 19 and a pawl 20, as

long as it is desired to make use of the same carrier bars.

The operation of changing the carrier bars, which changing is required for effecting the different operations of striping, plating, splicing, .feeding the heel, etc., is eifected by turning the two cylindersfronr one division to another, each of said divisions being provided with a row of cams of suitable disposition according to the sequencefof the various operations.

In the arrangements here shown,-';-"each generatrix of the cylinder corresponding to each division of the sanie have adjacent each lever 14 suitable tapped holes adapted to receive screws the heads of which form the said cams 15; f

' In practice, the cylinders will have upon their surface one or more combinations of cams which are necessary for the manufacthe movement is effected by the lever '22,

Figs. 8 and 9, which is connected with said pawl by a link and is impelled by a cam 23 keyed to the driving shaft of the machine, The hook 24 which holds the whole mechanism in such a manner as to maintain the .cam roller of the lever 22 out of the influence of the cam '23, is released by means of a cam placed upon the chain of a counting device, a means which is usually employed for analogous movements,

Y As concerns the guides and the reinforcing sheaths for the carrier bars, suitable sh'eathings or linings 25 are disposed upon the ends of these bars; they surround the latter on three sides and have edges which bear upon the guides 28 secured to the supports 29 and 30. The said sheathings carry on their upper face the'entrainin'g screws 8 above mentioned and on their lower face the screws 26 :and 56 which may be locked in fixed position by lock-nuts 26'and 57. .Let

llli) us consider the left end of the machine' The right end is symmetricalto the left.

The screw 26 serves to regulate the stopping of the corresponding carrier bar against the stops 34 for the outer selvedges of the hoselegs and the screw 56 serves to lock the bar against the lock 33'for making the heels and for splicing.

The thrusts and 'the contact shocks will thus take place upon the said linings which serves also as guides; the bars thus reinforced can withstand all breaking strains.

said locks 33, 34 and stops 58 are vertically urged by the springs 35 and retained byihe horizontal pins 37 secured to the supports.

Suitable studs 36, 67,77 mounted on the locks 33 and 34, and upon the stops 58 rement at the left hand of the -'machine,' and that a symmetrical arrangement is mounted at the right, the two following examples will set forth the operation of the said stops and locks.

a.For' stopping the carrier bars at the outer-left-hand selvedge of the goods, the

I strike near the end of the left hand stroke a of this bar against the inclined face of the nut 26' carried by the thread carrier bar will upper part of the lock 34; thus the latter will descend in the support 29 in order to let the nut 26', and the screw 26 pass over said lock 34 so that the carrier bar may stop against the stop-screw 31 mounted. on the narrowing carriage 32. Atthe same time. the screw 26 has passed'over the lock 34 which rises again behind said screw 26,'thus ensuring a tight holding of the latter and of the corresponding carrier bar.

b.For the inner selvedge of the right heel, the screw 56 carried by the carrier-bar which moves from the right to the left, stops against a stop 33 on a support 30 disposed at the left hand of the machine; the locking takes place at the same time at the right-' hand side of the machine by means ofa lock disposed on the right hand support symmetrical to the left-hand support 30 shown in Fig. 4. The symmetrical operations take place for making the inner selvedge of the left heel.

The following part of the description shows the adaptation of the various working manner of the carrier-bars.

If one of the carrier-bars is to be stopped alternately at'the right and at the left, and otherwise than for the selvedges, in order to feed the upper part of the foot or the loop rows between the heels, the following arrangement is employed (Fig. 4). The stopping at the end of the right hand motion takes place between the lock-nut 57 mounted on the carrier bar and the adjustable stop screw 53 mounted on a stop 58 which is slidable in a support 49 secured to the frame; the locking of the bar is effected by the adjustable screw 56 acting uponthe lock 33 of the support 30. The stopping and the locking at the end of the left-hand motion of the bar will take place in the same manner but at the right-hand side of the ma chine.

The locks must be released in order. to provide for the restarting of the carrier bars. For this end the lever 43, Fig.4,i which is pivoted to the support 29. carries a roller 45 and a pin 46 which is adapted to bear upon the pin 36 of the lock 34. A cam 47 secured to the movable support 5 which follows the motion ofthe slur-cock acts upon'the roller The roller'i65 is actuated by a cam 48 pivoted at 68 to the movable support 5. During its left-hand stroke. the cam 48 raises the roller 65 and lowers the locks of the support 30. During the reverse stroke the said cam 48 strikes the roller 65 by means of its lower inclined plane so that the "said cam will rise and pass over the roller 65.

The locks 33. as well as the stops 58 have to be permanently lowered when the corresponding bars travel over. the whole stroke between the outer selvedges. This lowering is effected by means of curved rods 38, Fig. 4, operated by handles 39 and held in the hooked position by the springs 41 and 73 shown in Fig. 4 arid cooperating with catches 7 4 secured on said rods 33 and shown. in Fig. 14. The whole device'is mounted upon supports 40 secured to the frame. The various rods 38 act upon the studs 67 of the. locks 33 and upon the pins 77 of the stops 58. In order to return the said stopsand locks into their operative position. it suffices to disengage the catch 74 by means of the knobs 42 provided for this purpose: the rods 38 will resume their top position under the action of the springs 41 and 73 mounted round the said rods within the supports 40.

Having now described my invention what I claim as new and desire to secure by Letters Patent is:

1. In a straight knitting machine, the combination of means comprising thread carrier-bars and a looping bar with frames moving above said carrier-bars, whereby the motion of the looping bar is transmitted simultaneously to a number of thread carrier-bars, said means consisting of two groups of pivoting fingers whose number is equal to the number of thread carrier-bars, each of said groups being adapted to act in a given direction, said fingers being yieldingly secured in determined angular positions, stopping and locking devices adapted to limit the stroke of the thread carrier-bars and located below said carrier-bars. whereby each finger is overturned into its inoperative position at the end of the stroke by the corresponding ,carrier-bar, means controlling the setting-up of the pivoting fingers whereby several bars are adapted to be simultaneously driven along for independent strokes of different amplitudes.

2. In a straight bar knitting machine. the combination of thread carrier bars and a looping bar, with frames moving above said carrier bars and drawn along by'said looping bar, fingers pivotally mounted on said frames, means for yieldingly maintaining said fingers in determined angular positions,

means secured to said carrier bars and adapted to be engaged by those ofsaid fingers being in their operative angular posi 1 tion whereby said carrier bars are driven 5 along in either direction and the same fingers overturned in their inoperative position when said carrier bars are stopped, strikers located respectively at both ends of the stroke of each carrier bar and adapted to be i. engaged by said fingers, means for locking said strikers whereby the locked strikers overturn the corresponding fingers into their operative position, means for-allowing the unlocked strikers to yield under the-thrust of the corresponding fingers, means for controlling the locking of said strikers and meafls located below the carrier bars for adjusting the stroke oi the same.

3. In a straight bar knitting machine, the

combination of thread carrier bars and a looping bar, with frames moving above said carrier bars and drawn alongby saidlooping bar, fingers pivotally mounted on said frames, means for yieldingly maintain said fingers in determined angular positions,

, means secured to said carrier bars '\1I1d adapted to be engaged by those of said fingers being in their operative angular positions whereby said carrier bars are, driven along in either direction and the same fin- I gers overturned in their inoperative position when said carrier bars are stopped, strikers located respectively at both ends of the stroke of eachcarrier bar and adapted to be engaged by said fingers, means for locking said strikers whereby the locked strikers overturn the corresponding fingers intotheir operative position, means for allowing the unlocked strikers to yield under the thrust of the corresponding fingers, rocking levers for controlling the locking of said strikers, a cam arrangement for controlling said levers whereby the carrier bars to be driven may be selected, and means located below the carrier bars for adjusting the stroke of the same. y

( 4. In a straight bar knitting machine the combination of thread carrier bars and a looping bar, with fingers moving above said carrier bars and driven along by said looping bar, linings for reinforcing and guiding said carrier bars, adjustable screws secured to said linings and upon which said fingers are adapted to stroke whereby the carrier bars may be driven in either direction, means located at both ends of the machine for selectingthe carrier bars to be driven,

stopping and locking devices located at both v ends and below each carrier bar for varying the stroke of the same and ad ustable screws secured to said linings and cooperating with 1 said stopping and locking devices whereby the stroke ot said carrier bars may be adjusted. V v

In testim ny whereof I have signedmy name to thiispecification.

f EMILE ARSE'NE NOBLE.

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