US2604768A

US2604768A - Knitting machine

Info

Publication number: US2604768A
Application number: US767503A
Authority: US
Inventors: John E Schuster
Original assignee: Individual
Current assignee: Individual
Priority date: 1947-08-08
Filing date: 1947-08-08
Publication date: 1952-07-29
Anticipated expiration: 1969-07-29

Description

July 29 1952 J. E. scHus'rER I 2,604,768

KNITTING MACHINE Filed Aug. 8, 1947 A f lo sheets-sheet 1 INVENToge. Jon-a E. SQHUSTER,

0" 10mg 1C.

July 29, 1952 J. E. scHus'rER 2,604,768

KNITTING MACHINE Filed Auz. 8, 1947 l0 Sheets-Sheet 2 3 wom/vm@ 0I-IN E. SCHUSTER,

July 29, 1952 J, E, scHUsTER 2,604,768

Y KNITTING MACHINE Filed Auz. 8, 1947 l0 Sheets-Sheet 3 SWW/Mofa JOHN E. SCHUSTER July 29, 1952 J. E. scHusTER KNITTING MACHINE 1o sheets-sheet 4 Filed A1121. 8, 1947 JOHN E. 'SCHUSTER July 29 1952 J. E. scHusTx-:R 2,604,758

KNITTING MACHINE Filed Auen. 8, 1947 10 Sheets-Sheet 5 F I G. 5 A

` 9 SWW/Mofa JOHN E. SCHUSTER,

July 29, 1952 J. E. scHusTER KNITTING MACHINE l0 Sheets-Sheet 6 Filed A112. 8, 1947 FIG. 5

my mm W yi 3S U H C S E N H O J (lp/@Lck July 29, 1952 J. E. scHusTl-:R

KNITTING MACHINE Filed A112. 8, 1947 10 Sheets-Sheet 7 JOHN E..SCHUSTER 5M OLPWMIQ July 29, 1952 Filed Aug. 8, 1947 FIG.

J. E. SCHUSTER KNITTING MACHINE 10 Sheets-Sheet 8 FIG.

@www JOHN E. SCHUSTER,

July 29, 1952 J, E, s-CHUSTER 2,604,768

KNITTING MACHINE Filed Aug. 8, 1947 10 Sheets-Sheet 9 FIG. I2

I Qrwa/wtm JOHN E SCHUSTER,

531,13 v (L/PML K July 29, 1952 v 4 J, E, SCHUSTER 2,604,768

KNITTING MACHINE Filed Aus. 8, 1947 10 Sheets-Sheet lO y gwgmm` JOHN E fSCH-USTER,

Patented July 29, V1952 KNITTING MACHINE John E. Schuster, WashingtomD. C. f I. Application August 8, 1947, seria1No.7e7,5o3 1 The present invention relates to new and improved knitting machines of the so-called Raschel-type.

A primary objectv of the invention is theembodiment of a machine of the'aforesaid type;

which is characterized by relative simplicity of construction, compactness of I arrangement, accessibility of parts for adjustment, replacement or repair, adaptabilityfor simultaneous manufacture of 'a plurality of` knit products, vindependence of parts whereby the specic character of the 'several productsbein'g made may be individually and independently varied, freedom from objectionable'protuberancesyl capacity for operation at higher than' normal lspeeds without objectionable vibration, highlyenhanced output, etc. v

other objects wiu'befapparent from the follow:

ing detailed descriptionv of constructional embodiments of machines according to the invention;

To this end, Athe invention comprise's'the relationships '"of parts shown on thev accompanying sheets of drawingand described in detail, by Way of example, in' the `following specification:

On the saidsheets of drawing, i

Fig. 1 is a perspective Vview of one embodiment of machine according` to the present invention, as seen from one end thereof;

Fig. 2 is a fragmentary elevationalview of the said end of the said embodiment, on a relatively enlarged scale; f i Y Fig. 3 is an elevational View of a portion of the other end of the aforesaid embodiment of the machine according to the invention;

Fig. 4 is a front'elevation of a1 portion of the machine showingvrnore particularly details of the knitting mechanism; Y i n Fig. 4A is an elevational view-of a lterminal bracket and guide pins-lv 1 i Fig. 5 is'asectional View (upper portion) 'taken along line 5*-#5 of FigJr4; f

Fig. 5A isaseotional view (lower'portion) taken along line 5-.-5"oi"lig.'4.;,Y y l fr' l Fig. 6 is a fragmentary elevation, viewed from the front of the machine, and Showing the main driving' arrangement; 1 l

Figs. 'I andv 8 are fragmentary viewsshowing the mode ofdriving the monitor head, actuating the cloth take-up mechanism,l and vdriving the knitting mechanism andzthe worky take-up mechanism, Fig. 8 ,being taken along line 8 8 of Fig. '7; J

Fig. 9 is a 'perspectiveiviewof an endvof a second embodiment of machine according to the invention 4 Claims. (Cl. 66-86) Figs. l0 and 11 are, respectively, fragmentary elevational andsectional views of one embodiment ofy reed suspending means, Fig. l1 Abeing taken along line II-.`| I of Fig..10;

and

Fig. 13 is an elevational `View of a mourned form 'ofi Work take-up 'mechanismf -5 TheH Warp knitting machine; according. tov- ,theV present invention'comprises a num-ber, of major parts, vessentially as follows: v C (al The machine7 frame; (blThe drivingmechanism;l (c) The dual knitting mechanism; f (d) The work. take-up mechanism; and

(le) The cloth.;takefupmechanism. ir i (a) The indfinie' 'frjdi'nf This consists essentiallynof avpairofV sidewalls l I l interconnected by suitably arranged transverse'bars or beams.v I2; lThe loweriparty ofthe frame supports the driving mechanism. vThe knitting mechanism isi arranged substantiallycentrally of the frame. The upper part` ofthe frame assumes the'formof-a beam tree I3 for the requisite Lbeams androlls of yarn. Onvthe exteriorof one ofthe frame sides is arranged the work take-up mechanism'and the monitor head, while on the exterior of the` other frame side is the 'cloth take-up mechanism'andlthe needle bar oscillating mechanism. Y f

As will hereinafter appear, the vmachine Aframe is o1" such conguration 4 and the several-,mechanisms are so 7arranged .thereon that a relatively compact machine resultsmuch kmore -comp-act than comparable prior art machines, Additional features of the arrangement'are that vlthere are no substantial -protuberances--other than the conventional monitor head-beyond the limits of the' machine frame. Even the' drivingfm'otor is disposed within the connesof the latter. Moreover, all the operating parts are-readily accessible for adjustment, repairTand/or removal.

The beam tree is formedso that Ythe beams and rolls thereon do notinterfere withtheworkof llie operator. butare neverthelessreadily accessie...r (b) The driving 'm'echamism`.V

The sourcel ofpower is an^el'ectric motor I4 (Fig. 6) of suitable capacity for 'driving the machine at variable speeds up to'as vhighlasxor greater `theme00 rows'per minute. .The motor is'mounted `centrally and inwardly of the' front of the machine. AA gear casing 'l5 containingv suitably proportioned reducing gearing or vt-he FICE Fig. 12 is a perspective view of rnonitorhead;

like is arranged above the motor casing, the gearing being driven in conventional manner from the motor. This gearing is connected via a toothed coupling I6 or the like on each side to the corresponding half I1 of a split main drive shaft. 'I'he drive shaft halves I1 are respectively journaled at their other ends in one of the side walls of the frame.

Just inside veachside wall, an adjustable high speed needle bar cam I8 is mounted onA each drive shaft element I1. Each such cam cooperates with an eccentric |9 whereby an integrally connected lever arm oscillatably reciprocates in the ver-r tical direction. The top of each levertv arm is pivotally connected to a vertically reciprocal slide 2| which moves in a slide box 22 (Fig. 5A) affixed to the inner surface of the corresponding side frame wall.

As will hereinafter appear, this arrangement drives the needle bar of the machine.

The main driving shaft element I 1, on one side of the machine, extends through the side wall I I, on the exterior of which itis provided with an eccentrically disposed earn 23 (Fig. 3) which, as hereafter explained, constitutes in effect the driving means for the work take-up mechanism.

This same main 'driving shaft element is provided, just inside the frame side wall I I in which it is journaled, and therebetween and the'first described cam member I9, with a sprocket gear 24 (Figs. 6 and '7) from which, by way of a sprocket chain running over the

gears

25,26 mounted on the frame I I, a pinion 21 mounted on the outside of the frame adjacent the monitor head is actuated. This pinion 21. engages a bevel gear' 28 mounted on theend of the monitor head shaft 29. This in effect constitutes the driving means for the monitor head.'

Theother end of the other main drive shaft element I1, projects beyond the other frame wall I8, in which it is journaled, and has a pear-shaped box cam 30 (Figs. 1 and 2) Amounted thereon. This provides the means for actuating the dual swing bar shafts, hereinafter referred to.

It is thus apparent that an efficient driving means is provided whereby, from a single centrally-positioned power source I4, a plurality of elements and mechanismsare actuated'through the medium of a pair of main driving shaft halves I1. This arrangement avoids the necessity of dismantling the entire machine when repair or replacement'is necessary on one side-only the in volved side being taken down.

In order to allow minor adjustments to be made, meansmay be provided whereby the machine may be manually actuated. To this end, a handwheel element 3| may be provided (Fig. 6), rotation of which actuates the gearing in box I5. During actuation from the motor I4, the power transmitting element 32 (belt, sprocket chain, or the like) is loosened, handwheel 3| being mounted on an eccentric bearing for this purpose.

(c) -The dual knitting mechanism y i The upper end of each slidev 2| (Figs. 5 and 5A) is bolted at 33 to a channel-shaped needle bar 34..

Secured in any suitable and desirable manner, as by means of members 35, to each upwardly-extending vertical leg of the said needle bar is a row of needles 36, whereby two parallel spaced rows of needles' results.

A stationary face plate 31 is adjustably secured, by means of bolts or the like, to each side of each of the aforesaid slide boxes 22, the innersurface of each face plate being arranged in juxtaposition to the adjacent vertical leg of the needle bar 34. The latter thus reciprocates between the opposite surfaces of the two face plates. To facilitate the sliding movement between the juxtaposed surfaces of

members

34 and 31, the inner surface of each of the latter may be provided with lubricating inserts (graphitic studs or the like).

As will hereinafter appear, the material being knitted moves from the hooks of the needles over the'fro'nt'or outer surface of;ea'ch face plate to its respective work take-up roller (hereinafter described) An important feature of the invention, in its preferred embodiment, is its dual aspect. This is realized by the provision of two, instead of one,

Vguide

bar swing shafts

38, 39. the guides 48 on the cooperating with the corresponding row of needles. This dual arrangement, as will become clear as the description progresses, makes possible the relatively high speed of the new knitting machine, since each swing shaft andassociated' partsA in effect constitutes an inertia cushion or counterbalance of the other swing shaft and its associated parts whereby the chattering or undue vibration encountered at high speeds in single swing shaft machinesV is effectively eliminated.

If desired, andas shown in Figs. 5 and-5A, itisy possible, with the machine of the invention, to provide as'many as 3 rows of needles 36 andas many as 3-5 rows of guides 48. The third row of needles involves the provision of an additionalv xed face plate 31' and slide box 22' and also of an additional reciprocable needle bar 34. -Reciprocation of the latter may be realized by meansof connecting links-42, 43. It'will be understoodl that

parts

42, 43, 22', 34' and 31 may be omitted,-

in which case connection between

parts

20 and 2| (Fig. 5A) will be by means of a 'simple articulating linkage.

As hereinbefore indicated, the swing-

shafts

38, 39 are actuated for oscillation from themain drive shaft I1 via the pear-shaped box cam 30 thereon.-

A vertically reciprocable driving bar 44 is provided (Figs. 1 and 2) which has, at its lower end,'a cam roller 45 which rolls in the recess or groove 48 of the box cam, whereby a positive drive of the said bar in both directions is realized. The said vertically reciprocable driving bar is arranged for movement in a slide box 41 fixed to the outside of the corresponding side wall I0 of the frame.

The

swing shaftsA

38, 39 themselves are positioned above the needle rows with their ends journaled in theframe walls, one end of each swing shaft projecting outwardly beyond that wall I8 on which the aforementioned driving bar 44 is arranged. Integrally associated-with the projecting end of the first guide bar swing shaft 39`is a slotted arm 48, the slotted extension of which is associated with the upper end of an adjuster link' 49, the lower end of which is pivotally connected at pivot to the aforementioned driving barl 44. Reciprocation of the latter. upon rotation of the box cam, effects oscillation of the slotted arm 48 and therewith of the first swing shaft 39.V The extent of the stroke may be varied by adjusting the adjuster link 49 'relative to the slot in arm 48 whereby displacement of the pin inthe slot is effected. Further adjustment is also possible with the aid of the angular adjusting piece5I which is fixed to the end of the swing shaft by means of pins 52. Adjusting screws 53 threaded through lugs extending from the periphery of the upper end ofthe slotted arm 48 are adjustable with respect to the angular adjusting piece 5 I. The radial 'screws (not. shown) which hold the` arm 481111 place on the shaft end are first loosened, therrtheposition of the arm on the shaft adjusted by turning'the adjusting screws ?.--and the` radial screws tightened when the desired relative disposition of arm and shaft is realized. i i

Secured to the projecting end of the second guide-bar swing shaft 38 is a second arm 54 comprising essentially an annulus securable to the shaft end and an obliquely upwardly eX- tending lug, the latter being provided with a plurality of perforations or bores 55 extending therethrough. A connect-link 55 extends from the iirst arm i8 to this second arm 54.1 lower end of the said link 56' extends through the slotted portion of the first armV 48,' while its upper end is secured in one of the aforesaid perforations or bores 55, the number and disposition of the latter affording a means of adjustment. It will be manifest from the foregoing that means are thus provided for the simultaneous oscillation-with possibilities of relative adjustment of strokes-of the two guide

bar swing shafts

38 and 39. It is noteworthy in this regard that the adjustments of the two swing bars are wholly independent of each other, which is desirable since each barmay be involved in an entirely different piece of work from the other. It is also possible wholly to dissociate the second swing bar from the first, if desired, whereby in effect a single swing shaft machine is realized.

Depending from each swing shaft at spaced intervals therealong (see Fig. 4) is a bracket 55 (see also Fig. 5), the lower portion of which is subdivided into a plurality of segments. From each segment, a vsteadier S0 .may depend, the connection between the segment and steadier being such as to allow of. their relative adjustment. The lower end of each steadier is. provided with a bore. A steadier pin 6l extends through each said bore, the ends of the pin being secured in lugs 62 integrated with and upstanding from the guide bar 4l therebeneath. A coil spring (i3v is arranged on each steadier pin tl between the steadier 6!) and one of the said lugs 62. j

lt is clear from the foregoing that upon the swinging of either swing shaft, the guide bars 4|l associated therewith in the above-described manner will be entrained, i. e. willswing or oscillate therewith.

However, it is also necessary that the-guide bars lll be reciprocable as well as oscillatable. To this end, a special terminal bracket 64 (Figs. l and 4A) is provided at each end of each swing shaft 38 and 3S. Each terminal bracket 64 is provided with a number of horizontally extend-v ing pins Sii, corresponding in vnumber to the number of guide bars 4l. At each end of each guide bar, there is a special upstanding terminal lug $6 which is provided with a bore whichts over the corresponding pin 65 of the terminal bracket Gd. Slide bearings for the guide bars '4I are thus provided. At the end nearest the monitor head, each guide bar 4I is provided with means for association with a pull chain or bar Si (Figs. 'l and 12). y

The monitor head 6B (which may be encased as at 69 in Fig. 7 or may be exposed asin Fig. 12) is of generally conventional construction but is much larger than usual in order that it mayA accommodate 8-10 cam chains. The monitor head is mounted on a bracket 1U (see Fig. l2) which provides the journal means for the monitor head drum shaft, on which the chain cams TheV arer wound, in spaced relation. Y Above the monitor head drum is an upper pivot shaft 1l on which are pvoted anumber of L-shaped o am roller members 121corresponding in number to the number of chain` camsand to the maximum number of guide'bars.` v

`The vertical leg offeach L-shaped member is adjustably connected to one end of`a chain or bar 61, the other end of which is securable to the` corresponding guide 4bar- 4|'. The horizontal leg ofeach L-shapedY member is provided with a cam. roller 1.3 which coacts'wtih the chain cam, whereby, at the desired moment, a pull is exerted 0n the corresponding guide .bar 4| through its chain or rod 61 and against the action of the aforementioned coil spring 63 which tends to pull the guide bar'l in the other direction. The chain cams on the'rnonitor .head correlate the pulls to the oscillatory movements of the

swing shafts

38 and 39 and to the vertical reciprocatory movements of the needles in accordance with the .desired knitting pattern. Each pull chain or rod B'l'can be disconnected from its guide bar 4l when the latter is not to be used, and the entire L-shaped cam-,member can be swung over out of the way. The camsand the adjustable connections enable variableA and independent adjustments to be made.

` (d) The work falce-up' mechanism Two sets of emery surfaced work vtake-up rollers 'hl (Fig. 2) are provided, one pair for each needle row. vFor positive interconnection, the rollers of each pair are preferably provided adjacent the endsthereof with intermeshing gears. As the take-up rollers are rotated in the manner hereinafter described, the material being knitted goes in therebetween, passing behind the top roller and over and in front of the bottom roller, then back to a guide rod 'and down to its corresponding cloth take-up roller.

A dual ratchet take-up mechanism is provided on the one side wall Il ofthe frame undervthe monitor head assembly previously described. The

Ashaft of the lower one'of each pair of take-up rollers 14 extendsthrough a bearing and beyond the frame wall has av large ratchet wheel 'l5 mounted thereon. A mounting plate 'I6 is attached to the outside of the frame and is provided with a pair of spaced guideways H in which a roller lift slide 'I8 can reciprocate. A roller 19 is mounted on said slide. This roller 19 coacts with the cam 23 mounted on the projecting end of the main drive shaft element, hereinbefore described, and is periodically engaged by such cam. This engagement results in a periodic lifting of the lift slide '18. The upper end of the lift slide terminates in a projecting button or teat Bil.

Pivoted to the mounting plate 16 at el are a pair of tongue-and-socket intermeshed slotted levers 82, the intermeshed inner ends of which are periodically engaged and lifted by the aforesaid teat 80. rl'his lifting of the inner ends of the said levers 82 results in a concomitant downward movement of the outer slotted end of each said lever 82. Pivoted at 83 to each said outer end is an upwardly extending pawl-carrying arm 84, the slot of the lever enabling adjustment of the precise position of the lever. As the outer end of each lever 82 is periodically moved downwardly, as aforedescribed, the pawl mounted on each pawl-arm 84 and which is in engagement with one of said ratchet wheels l5 moves the latter, whereby the corresponding pair of take-up rollers 'M is correspondingly entrained. Spring means are provided to keep each pawl in constant engagement'with its ratchet wheel and each wheel is prevented from effecting undesired retrograde movement; by a pawl 86 in engagement therewith and mounted on the machine frame. Spring means 81 Yare also provided for moving the inner ends of the aforesaid levers 82 down again when the lifting teat 80 makes its downward stroke.

A modied form of dual ratchet take-up mechanism is illustrated in Fig. 13. Like the previously described work take-up mechanism, this is arranged on the exterior of wall I I. In so far as the same reference numerals are used on Fig. 13, the identified parts are identical with those of the previously-described work take-up mechanism.

Ratchet wheels 15 are, as before, mounted on the respective take-up roller shafts 14.

Parts

16, 11, 18, 19 and 80 are provided as in the previous embodiment, as is also the actuating cam 23. Pivoted to the plate 16 at 8| are the tongue-andsocket intermeshed levers 82', the intermeshed ends of which are periodically lifted by teat 80 and periodically moved down again by spring 81. Pivoted at to each lever 82 is a pawl arm |0|. Spring means |02 are provided for keeping the respective pawl arms IOI in engagement with the adjacent ratchet wheels 15.

As the inner ends of levers 82' are periodically lifted, the outer ends-and therewith the pawl arms I0| and pawls thereon, which are in engagement with the ratchet wheels-are moved down, a corresponding rotary displacement of the latter being thus periodically realized. Slot-andbolt means may be provided for adjusting the length of the arms |0I. Screw-bolt means |02 may also be provided for adjusting the position of slide 18.

(e) The cloth take-up mechanism As hereinbefore indicated, as the work passes from the work take-up roller, it goes to its respective cloth take-up roller 88 where it is wound on a spool or the like. The shafts on which the cloth take-up rollers 88 are mounted are provided, one above the other, at the bottom rear of the machine (Fig. 1). The mechanism which is provided, according to the invention, for the take-up of these rollers involves an actuating mercury switch 90 (Fig. '1) on the monitor head side of the machine and a solenoid arrangement on the other side of the machine.

A cam 9| (Fig. '1) is provided on the side of the monitor head drum, which cam periodically engages and lifts the mercury switch 90 pivotally mounted on the machine frame at 92, whereby at each lift the switch 90 is closed. This closing of the switch actuates the aforesaid solenoid arrangement at the other end of the machine. Spring means may be provided for returning the switch to its original disconnected position, or this may be effected by gravity.

At the other end of the machine (see Fig. 2), a pair of guide boxes 93 arranged one above the other are provided in juxtaposition to the cloth rollers 88. A reciprocal slide element 94 is slidable in each box 93. The upper end of each slide element 94 is connected to or itself constitutes the core of a solenoid 95, two of which-connected in series-are provided. These solenoids are actuated upon the closing of the aforementioned mercury switch 90 and lift their respective slide elements 94.

Each slide element 94 carries a pawl 96 which, through the medium of a spring, is kept in con- 8 Y stant engagement with the corresponding ratchet wheel 98 mounted on the corresponding take-up roller shaft 88. Spring means 91 are provided which exert a downward pull on each slide element 94 and thereby on its related ratchet wheel 98 so that the cloth being wound on the rollers 88 is constantly kept in the correct state of tension. A retrograde-movement-preventing pawl 99 is provided for each ratchet wheel 98.

Single swing shaft machine While, for the reasons hereinbefore set forth, the dual machine as described constitutes the preferred form of the invention, the basic principles underlying the invention may also be embodied in a single swing shaft machine, as shown more particularly in Figs. 9 and 12.

In this embodiment, the machine frame is essentially identical with that of the dual machine as described hereinbefore under (a). Moreover, the driving mechanism, as described under (b), is also essentially the same here. The knitting mechanism is the same in so far as the needle bar arrangement is.concerned. However, instead of two guide bar swing shafts, only one 38 is provided. Actuation of this swing shaft may be accomplished from the main shaft I1 via cam |02 mounted thereon outside of side wall I0. This cam effects reciprocation of slide rod |03 which slides in slide box |04 which is lubricated by a graphitic lubricant composition or the like. Reciprocation of rod |03 produces a corresponding reciprocation of bar |05 which is pivotally connected at one end to rod |03 and at the other end to lever |06 which is xed onto shaft 38'. Movement of bar |05 effects oscillation of lever |06 and, therewith, of shaft 38.

The work take-up mechanism and cloth takeup mechanism may be essentially of the type hereinbefore described, suitably modified in view of the single swing shaft character of the machine. Thus, for example, the arrangement according to Fig. 13 may be used for the work take-up, omitting the right-hand lever 82' and all parts to the right thereof, as shown on Fig. 13. The cloth take-up may comprise a single solenoid-actuated arrangement, which may otherwise be constructed according to Fig. 2.

Figs. 10 and 1l show reed suspension devices which may be used with both types of machines. Shaft 38' is shown as I-beam shape in crosssection; the ends of the shaft are of course provided with cylindrical gudgeons. Brackets |01 are fixed to the shaft 38 at a plurality of spaced points, only one being shown on Figs. 10 and 11. To each bracket |01 is adjustably secured a second bracket |08, adjustment being realized through screw bolt |09, and the parts being held in adjusted position by bolts ||0. Reed-carrying arms III depend from brackets I 08, the V-shaped perforated reeds being themselves secured to the said arms by securing screws. Guide rods I|2 and |I3 may pass through arms as shown.

It will be clear to the skilled in the art that correlation of the parts for knitting may be accomplished, for example during assembly of the machine, in order to achieve any desired results. In connection with particular designs, the monitor head plays its usual significant role.

t While the aforedescribed embodiments of the invention are the presently-preferred forms thereof, it will be understood that various minor alterations may be madein the details thereof without departing from the spirit of the invention.

Having thus described the invention, what is claimed is:

1. A knitting machine of the character describedcomprising a frame, a needle bar mechanism, a guide bar mechanism, a work take-up mechanism, and driving mechanism therefor, said driving mechanism comprising a source of motive power mounted on said frame within` its confines and intermediately of the end walls thereof, a pair ofV drive shaft elements connected to said source of power, an operative connection between said needle bar mechanism and each of said drive shaft elements for reciprocating said needle bar mechanism, an operative connection between said guide bar mechanism and one of said drive shaft elements for oscillating said guide bar mechanism, and an operative connection between said work take-up mechanism and the other of said drive shaft elements.

2. In a knitting machine of the Raschel type, a reciprocable needle bar mechanism providing a plurality of rows of needles, a guide bar mechanism cooperable with one of said rows of needles and comprising a guide bar and a swing shaft from which said bar depends, a second guide bar mechanism essentially paralleling said firstnamed guide bar mechanism and cooperable with another of said rows of needles and comprising a second guide bar and a swing shaft from which said second guide bar depends, means for actuating said mechanisms, and means for coordinating their relative movement.

3. In a knitting machine of the Raschel type, a guide bar mechanism comprising a swing shaft, brackets secured thereto and depending therefrom, guide pins extending from said brackets, a guide bar slidably mounted on said pins, whereby said bar may describe the oscillatory movements of said swing shaft and may also reciprocate relatively thereto, and means for reciprocating said guide bar, said means comprising a monitor head and a pull member for moving said guide bar in one direction and coil springs y mounted on said pins for moving said guide bar in the other direction.

4. A knitting machine of the character described comprising a frame, a needle bar mechanism, a guide bar mechanism, and driving mechanisrn therefor, said driving mechanism comprising a source of motive power mounted on said frame within its confines and intermediately of the end walls thereof, a pair of drive shaft elements connected to said source of power, an operative connection between said needle bar mechanism and each of said drive shaft elements for reciprocating said needle bar mechanism, and an operative connection between said guide bar mechanism and one of said drive shaft elements for oscillating said guide bar mechanism.

JOHN E. SCHUSTER.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 8,773 Henson Mar. 2, 1852 19,740 Vickerstaff Mar. 23, 1858 627,083 Weimar June 13, 1899 1,100,750 Lindley June 23, 1914 1,306,321 Watereld June 10, 1919 1,435,176 Pecker Nov. 14, 1922 1,577,330 Lindley Mar. 16, 1926 1,605,099 Debs et al Nov. 2, 1926 1,981,512 Kinsella et al Nov. 20, 1934 2,064,709 Wirth Dec. 15, 1936 2,155,146 Morton et al Apr. 18, 1939 2,200,280 Klumpp et al May 14, 1940 2,224,304 Kellogg et al Dec. 10, 1940 2,247,092 Klumpp et al June 24, 1941 2,249,422 Fradenburgh et al. July 15, 1941 2,281,702 Lieberknecht May 5, 1942 2,428,030 Lambach Sept. 30, 1947 2,429,230 VLambach Oct. 21, 1947 2,452,579 Lambach Nov. 2, 1948