US2358640A - Circular knitting machine of the double axially opposed needle cylinder type - Google Patents

Description

" Mmum Sept. 19, 1944. H. H. HOLMES 2,358,640

Y CIRCULAR KNITTING MACHINE OF THE DOUBLE AXIALLY OPPOSED NEEDLE CYLINDER TYPE Filed April 9, 1940 5 Sheets-Sheet l Fig. 1. A\

f Sept. 19, 1944.

H. H. HOLMES l 2,358,640

CIRCULAR KNITTINC MACHINE CE THE DOUBLE AXIALLYCPPCSED NEEDLE CYLINDER TYPE Filed April 9, 1940 5 sheets-sheet 2 Sept. 19, 1944.- H H, HOLMES 2,358,640

CIRCULAR KNITTING MACHINE OF THE DQUBLE v AXIALLY OPPOSED NEEDLECYLINDER TYPE v 'l Filed April 9, 1940 5 Sheets-Sheet 3 Sept. 19, 1944. H HOLMES 92,358,640

CIRCULAR KNI NG MACHINE OF THE -DOUBLE Y 77;

AXIALLY OPPDSED NEE LE CYL DER TYPE Filed April 9., 19 k5 Sheets-Sheet 4 Sept. 19, 1944. H. H. HOLMES 2,358,640

. CIRCULAR KNITTING MACHINE OF THE DOUBLE AXIALLY OPPOSED NEEDLEl CYLINDER TYPE Filed April 9, 1940 5 Sheets-Sheet 5A l Patented Sept. 19, 1944 CIRCULAR .KNITTING MACHINE OF THE DOUBLE AXIALLY INDER TYPE OPPOSED NEEDLE CYL- Henry Harold Holmes, Leicester, England, assign- I or to Wildt and Company Limited, Leicester,

England, a British company Application April 9, 1940, Serial No. 328,788

In Great Britain March 27, 1939 7 Claims.

This invention relates to circular knitting machines of the double axially opposed needle cylinder type, and concerns machines of this type which are furnished with lap or wrap stripingv mechanism for the purpose of producing embroidery plating in which aV design thread or threads is or are knitted on the face of fabric knitted from a ground yarn or yarns, such a mamachine for producing clocking and like effects.

Moreover, it is theintention to carry the invention into practical eifectin machines of the kind described having superimposed needle cylinders `with double ended needles operable by means of sliders such as are employed for producing articles with ribbed and plain portions.

The invention is also applicable to machines built on the stationary needle cylinder principle as weil as to machines built on the rotary needle cylinder principle.

The present invention has for its object to make'provision in a machine of the kind described for increasing the range of the thread lapping or wrapping movement of the thread guide or each or any of such guides according to the number provided as will be hereinafter set forth.

In order that the invention may be more clearly understood and readily carried into practical effect, some specific examples thereof as applied to a machine having superimposed needle cylinders with double-ended needles operable by means of sliders`will now be described with reference to the accompanying diagrammatic drawings.

In the drawings, r

Figure l is a vertical sectional'viewvof so much of such a machine as is necessary to illustrate one embodiment of the invention.

Figure 2 is a vertical sectional view of so -much of-the upper lportion of said machine as concerns the invention.

guides can be shogged bodily in a circumferential direction relatively to the needles, forva purpose hereinafter to be explained.

Figure 5 is a detail sectional plan view taken on the line V-V of Figure 2.

Figure 6 is a side view ofvone of the thread guides per se.

Figure 7 is an enlarged sectional plan view of thel guide taken on the line VII-'VII of Figure 6.

Figure 8 is an enlarged detail view showing the lower portion of a guide with its thread lapped or wrapped around a needle.

Figures 9-12 are detail plan views illustrating respectively different stages oi a thread lapping or wrapping operation.

Figures 13 and 14 are further detail views showing the positions of respectively different lap or wrap-striping threads lon the needles consequent upon needle selection.

Like partsare designated by similar reference characters throughout the drawings., The machine illustrated in Figures 1 and 2 includes rotary plain or bottom and rib or top' cylinders I and 2 respectively equipped with double-ended needles 3 and associated needle-oper-A ating sliders. The sliders in the plain or bottoml cylinder are. indicated' at 4 (see Figure 1), but those customarily provided in the rib or top cylinder have been omitted for convenience in illustration. The bottom cam box isrepresented at 5 and the top cam box at 6. The machine is furnished with thread lapping or wrapping mechanism of the general character described in the specification of United Kingdom Letters Patent No. 455,801. As will.be seen, this mechanism includes thread guides such as A in the forin-4 of blade-like elements each provided with a thread guiding portion I which extends at an angle,e. g.

at right angles, from the main portion 8 of the Figure 3 is a diagrammatic plan view including v a layout of a few of the needles of the machine and associated thread. guides, a deflector for moving the thread guiding portions laterally at appropriate times and a needle selecting arrangement all as will be hereinafter described.

Figure 4 is a side elevational view, partly vin section, showing mechanism whereby the thread blade or like part, said guides being mounted in a, cylindrical b'ed or like carrier such as 9 so as to extend in an axial direction or `substantially so with respect to the needle cylinders, for

movement radially across the needle circle from the inside to the outside and vice versa.

For the purpose of the present invention the thread guiding portions l of the thread guides A are fashioned and mounted so as to be adapted to pivot or swivel laterally under spring control as will 'be hereinafter more -fully described,

and a. deiiector l0 in the form of a cam or am I abutment is so formed and arranged adjacent to such thread guiding portions that when the guides are projected radially from. their normal position said portions are engaged by the deilector and deflected laterally to the extent of two or more needles. In this form of the invention the deector I0 is common to all of the-guides A and lateral deflection or swivellng movement of the portions 1 seriatim is engendered by the rotational movement of the series of guides and the deiiector one in relation to the other. Thus, since the machine being described is a revolvv across the needle circle-this time from the outing cylinder machine, lateral deflection or swivelling movement of the thread guiding portions 1 is engendered, in this particular example,.by the rotational movement of the guides A in company with the needles 3, in relation to the deiiector II).

Concerning the actual form and construction of the thread guides A, each of these is conveniently adapted to pivot or rock about a fulcrum point II and, as shown more clearly in Figure 6, has on its fiat, main, axially extending portion 81a frontal (pressure) butt I2, a main butt I3 and an upwardly extending butt I4. At its lower extremity the said `main portion 8 is cut at 8a in the manner represented in Figure 8 and a. part thereof is pressed out laterally and turned down suchwise as to provide an integralat lug Bb. This lug therefore projects from one side of the guide, and constitutes as it were a bracket or support for a small vertically disposed pin I5. This pin is bent over at its upper end so as to make contact with the adjacent side face of the thread guide, while the lower portion of the pin extends throughand beneath the lug 8b. The aforesaid thread guiding portion 1 is for the most part straight and is provided at its inner end with a bush or sleeve 1a adapted to nt and turn upon the pin I5. Provision of any suitable character may be made to prevent axial displacement of the portion 1 from the pin. I'he' construction is therefore such that the thread guiding portion can pivot or swing on the pin I5. The lower end of the main portion 8 extends at right angles to the remainder thereof and in this way is adapted to present a relatively iniiexible stop or -abutment 8c against which the pivotal thread guiding portion 1 is normally pressed by means of a torsion spring I6. This spring is arranged to surround the rpin I5 with one end thereof bearing upon the main portion 8 and its opposite end upon the pivotal portion 1 as shown in Figures l and 8. Accordingly, lateral movement of the portion 1, when required, is effected against the action of the spring I6. At or near its outer end the pivotal thread guiding portion of each guide A may conveniently be formed with a downwardly directed extension 1b which is provided with one or more, e. g. a Apair of, eyes such as I1 for reception of a lap or wrap striping thread I8.

It has previously been mentioned that the guides A are projected radially to enable them to be engaged by the deilector III. In this particular example the projection of the guides for this purpose is in an outward direction across the needle circle from the inside to the outside.v

tively upon the pressure butts I2, so that selected guides are pressed inwards at their upper ends and thereby projected radiallyK at their lower ends. The machine is also furnished with a retracting cam 20 arranged for action upon the upwardly extending butts I4 seriatim for the purpose of restoring selected guides to their normal position. The arrangement is such that after a selected thread guide A has been projected radially outwards into the path of the deflector, and while the corresponding pivotal thread guiding portion 1 is still deflected, the said guide is caused to revert to its normal position. i. e. it is moved radially inwards back side to the inside-thus being brought out of contact with the defiector I0 so that the thread guiding portion springs back to its original lateral position in relation to the needles served bythev guide.

Means are also provided for effecting appropriate relative lengthwise movement of the needies 3 and guides A so that by reason of such movement and the conjoint lateral deflection of the thread guiding portions 1 the threads I8 furnished by the guides may be lapped or wrapped about all of the needles in the groups served by the respective guides. In this connection either the needles may be moved towards the guides or the latter may be moved towards the needles, or both the needles and the guides may be moved lengthwise, appropriate cam orequivalent means suitably disposed being provided for this purpose in conjunction with cam means for imparting reverse movement to the needles or/and guides after the lapping or wrapping action. In the specific example illustrated both the needles 3 and the guides A are moved lengthwise, and such movement of the needles is taken advantage of to move them selectively so that in any group of two or more needles served by a guide, one or any one of the group may be caused to knit the thread supplied by the guide while the other or othersdo not.y This last mentioned result may conveniently be achieved by initially moving both wise that when such needle or needles is or are ultimately retracted and lcaused to knit, the thread is cast over the needle hook or hooks without being formed into an embroidery stitch or stitches. The selection of the needles in this way may be effected by means of a needle selecting arrangement or pattern controlled variable needle selecting means of any suitable type. Thus, as shown in Figures 1 and 3, the said means may comprise a bank of cams 2I, say six in number, controlled by a pin drum 22 (see Figure 3) having therein removable pins 23 which act upon intermediate levers 24 pivoted individually on a spindle 25. The levers 24 engage the cams 2| to ren-' der same operative or inoperative. In Figure 1, the top-most cam 2I is operative, the other cams beneath it being inoperative. The pin drum 22 may conveniently be racked round by means of a pawl and ratchet mechanism (not shown). The cams 2l are slidable radially with respect to the plain or bottom needle cylinder I in a bracket 26 mounted on the machine bed. As will be understood, the said cams act selectively, upon patterning butts 4a (Figure 1) of the sliders 4, there being as many butt positions as there are cams but not in every case a full complement of butts on each slider, butts being broken off the sliders according to pattern requirements. The bank of selecting cams 2| is located adjacent to a knitting cam system of conventional form in the bottom cam box 5. When any one ofthe cams is rendered operative by being advanced towards the needle cyilnder I by alever 24 acted upon by a pin 23 in the drum 22, a slider or sliders having a corresponding butt or butts is raised by reason of the cams being obliquely disposed, and the corresponding needle or needles is or rare advanced somewhat. The remaining sliders are not affected and consequently their needles function in the normalway. The result of this selective action will now be more fully explained with reithat wherever a guide is rendered operative the thread guiding portion 1 thereof is deflected as needle is at this height, aground yarn 21 is also presented'thereto between the hook and latch. An old loop I8a ot the thread IB and an old loop 21a of the ground yarn 21 are shown around the needle stern beneath the open latch. Assuming,

therefore, that the needle is not aiected by the needle selecting means and is thereby permitted to function in a normal way, then upon subsequent retraction of the needle by a stitch cam, the latch 3b will be closed, the newly presented thread I8 and the' yarn 21 will be formed into new loops and drawn through the old loops |8a and 21a, which latter will, of course, -be cast oil.'

the needle. If, on the other hand, the needle 3 is selected and raised by an operative cam 2I (through the medium of the corresponding slider l) to the height ,indicated in Figure 14, the latch 3b will pass above the lap or wrap striping thread I8, so that when the needle is ultimately retracted and caused to knit, only the ground yarn 21 will be formed into a loop,the thread I8 being merely cast over the hook 3a without being formed into an embroidery stitch. With regard to the aforesaid lengthwise movement of the thread guides A, a track or like cam 28 (see Figure 2) is provided for action on the main butts I3 seriatim, the formation of the track being such that theguides are slightly lowered and then raised. The lapping or wrapping action is facilitated by reason of the guides being lowered by the cam 28 but, of course, itis necessary to reposition the guides in a longitudinal direction before reselection.

So far as selection of the needles is concerned this mayA alternatively be achieved by normally maintaining the needles at a common position, e. g, level, in which they are too far from the thread guide to receive the thread kso that when the thread guide is operative the thread will miss the needles, and advancing the desired needle or needles to a favourable position to receive the thread. In either of the arrangements, the pattern controlled variable needle selecting means may comprise a rotary needle selecting device, and the needles or associated jacks or sliders, as the case may be, may have patterning butts thereon appropriate for the purpose.

As already alluded to herein there may be two or more thread guides A of the form aforesaid for each group of needles and these guidesmay be selectively operated so that either or any one of them may be kcaused to serve the needles or any needle of the group, i. e. the threadsv I8 may be supplied interchangeably to the group or any needle thereof in order to vary the pattern etect. It is for this purpose that the selector .levers or cams I9 are provided foraction selectively upon the appropriately distributed pressure butts I2. These selector levers or cams are adapted to be rendered operative and inoperative under the control of Va drum 29 which is included in a pattern device or unit hereinafter to be described. Alternatively, a chain, jacquard band or some equivalent unit with patterning formations thereon or therein may be employed instead of a drum such as 29.

The deilector I may occupy a xed position radially with respect to the thread guides A so a matter of course. Alternatively. and as shown in Figures 1 and 3, the said defiector may be arranged for movement to and from an operative position in' relation to the guides under the control ot timing or pattern mechanism (not shown) of any conventional character so that it may be caused to operate on one or moreof the guides and not on another or others, whereby any of the guides thus missed laps or wraps its thread about one needle only, instead of each being deilected to the extentof two or more needles. Thus, as will bel seen, the deilector I0 in the particular example illustrated is adapted for sliding movement radially within a bracket`30 attached to the top of the cam box 5 and is controlled by a tension spring 3l. One end of this spring is anchored to the bracket 30 while ythe opposite end thereof is anchored to a pin 32 carried by the deflector I0. The operative, i. e., innermost, -position of the deilector is determined by a'screw abutment 33 which is carried by the enlarged outer end I0a of said deilector and adapted at its leading end to make contact with an appropriate part of the bracket 30. By suitable adjustment of the screw abutment 33 the innermost position of the deilector can be varied within limits. A lever 34 adapted to be controlled by or from the main controlling or timing mechanismo! the machine is provided for operating the deflector according to requirements. -The operative extremity of this lever is arranged to press upon the outer end of the deflector (seeFigure l), the larrangement being such that the latter is pressed into its operative positionv against the spring action and permitted to return at appropriate times to a normal inoperative position under said action. In any event, the deflector may be in the form of a cam having an operative edge or .face IIlb appropriately shaped and positioned in the manner shown with respect to the path followed by the thread guiding portions of any thread guide moved radially in advance of the groupof needles to be served, so as to vhold the engaged guide deilected for the appropriate length of time.

The cylindrical carrier 9 for the guides A is rotatably mounted upon a sleeve 35 depending from the top plate 36 of the machine. The lap or wrap striping, i. e. embroidery, threads'may be guided from bobbins, cones, spools or reels mounted upon a rotary bracket through tubes 31 appropriately clustered within the sleeve 35. lThe customary gear ring 38 on the rib or top cylinder 2 is furnished with grooved securing segments 39. A gear ring 60 is arranged normally to drive the cylindrical carrier 9 at the same speed as the rib or top cylinder 2.

The guides A may invariably serve the same groups of needles. Preferably, however, a machine of the character now being described embodies means for shogging the thread guides A bodily in a circumferential direction relatively to the needles 3 over one or more than one needle space, e. g. to the extent of a group of needles served by a guide, so that the guides can be caused to serve different groups of needles-at different times. For this purpose the machine illusa pinion 4| freely mounted upon the top cylinder driving shaft 42. The pinion 4| is driven by a reel 43 slidably keyed on the shaft 42 and having opposed stepped cams 44 4and 45 radially ofiset and engaged by rollers 45 and 41 on a pattern controlled slidable block 48. The reel 43 also has a projection 49 with stepped edges 49a to engage opposed screws 50 arranged on the underside of the pinion 4|. The screws 50 are carried by slidable bars 5| adjustable so that the amount of shogging for a predetermined movement of the block 48 can be varied. A gear 52 this arrangement, therefore, the cylindrical carrier 9 can either be driven from and at the same speed as the rib or top cylinder 2 (as it wouldnormally be) or it can be shogged in either direction to the extent required by appropriate axial movement of the reel 43 upon the shaft 42.

1 Itis convenient here to mention that the structure serving to support the aforesaid bobbins, spools, cones or the like is mounted upon a rotary toothed part 53 which is adapted to mesh with and thereby be driven by a gear wheel 54 in turn driven by the shaft 42.

The shogging mechanism herein described may lconveniently be adapted to be controlled by the same pattern device or unit as that which is used selectively to operate the selector levers or cams I9. The pattern device or unit shown is 0f the general character described in the specilication of United Kingdom Letters Patent No. 514,261 and will now be briefly described with reference to Figures 2 and -5. As will be seen, the said device or unit comprises two drums 29 and 54, one iixedly and the other freely mounted co-axially on a hollow spindle 55 in turn rotatably mounted .on a fixed axle 56. The freely mounted drum 29 is formed with a neck 51 having a radial 1ug58. The spindle 55 has keyed thereon ratchet wheels 59 and 68 arranged so as to enable forward or reverse rotation to be imparted to the spindle according to requirements. The ratchet wheel 59 is connected with the neck 51 by an arrangement comprising, in

' combination, a pair of arcuate blocks 9| (see Figure 5) located in a circular groove 52 in the wheel, one on each side of the lug 58, a tension spring 63 engaged with a pair of screws 54 one in each block at the end opposing the lug 58, a pair of screws 55v one inserted in each block at the other end, and a pair of plates attached to the ratchet wheel 59 in the positions shown in Figure 5. The drum 29 has a toothed ring 61 attached to it, and a catch 88 is urged into engagement 'with said ring so as normally to prevent rotation of the drum. The catch 69 is operated by any suitable means in timed relation with the operative strokes of pawl and ratchet mechanism by means of which the spindle 55 is racked round. The arrangement is such that normally the spring 63 pulls the nearby ends of the blocks 6| up against the lug 55; When the ratchet wheels 59 and 6l are racked in either direction the vdrum 54 is racked to a corresponding extent and the spring 93 is tensioned so long as the freely mounted drum 29 is held by the catch 68. Consequently when said catch is operated to release the drum 29 the latter is racked by the spring 53. The two drums are therefore racked one after the other. As herein alluded to, the drum 29 is utilised for controlling selective operation of the thread guides A,

while the other drum 54 is employed to eiect or control shogging of said guides relatively to the needles. Both of the drums are adapted to receive pins or pegs. those89in the drum 29 being for action upon the selector cams or levers I9 and those such as 10 in the drum 54 for action on a lever 1|. The lever 1| may be pivoted and adapted to eflect through any suitable intermediate mechanism (noty shown), movement of the slidable block 48. A spring-pressed disc 12 is adapted to act frictionally on the bottom of the drum 54 to prevent the latter from overrunning when racked round. The disc 12 is held down by an intermediate member 13 which is in turn acted upon by compression springs such as 14.

Having now completed the description of the improved machine in its preferred form, the various stages of a lapping or wrapping operation will now be described with reference more particularly to Figures 9-12. Assume that the thread guide A and the needles 3 shown in each of these four figures are moving in the direction of the arrow B (Figure 9) relatively to the stationary deflector l0. Of the six needles represented it will be assumed that three of them, i. e. those bracketed togethenare to be lapped or wrapped by the thread I8. At the stage shown in Figure 9 the appropriate needles have previously been moved to a favourable position to receive the thread I8, and the various instrumentalities are approaching the defiector I0. At this stage, moreover, the guide A, although in its normal position with the thread guiding portion 1 thereof pressed against the stop or abutment 8c, is just about to be projected radially in the direction indicated by the arrow C. As the result of being projected in this way the thread guiding portion 1 is positioned adjacent to the deiiector and the thread I8 is carried from the inside to the outside of the needle circle as shown in Figure 10. Consequent upon further rotational movement of the guide A in company with the needles in relation to the stationary deector |0, the thread guiding portion 1-in passing said detlector-makes contact therewith and is thereby deected laterally to the extent of three needles so that a portion of the thread I8- is caused to extend across the stems of the three bracketed needles at the front thereof as depicted in Figure 11. While the portion 1 is still deflected the guide A is moved back radially across the needle circle in the direction indicated by the arrow D in Figure 12. 'I'he thread guiding portion 1 is consequently brought outioi contact with the deector l0 and after the extension 1b has been completely withdrawn from contact with the side of the needle 3', said portion will'spring back to its original position under the action of the associated spring I5, thereby completing the wrapping or lapping operation. Lengthwise movement of the guide facilitates the operation as hereinbefore described.

Spring or spring controlled thread take-up elements or means may be provided, e. g.- one for each thread.

What I claim then is:

1. A circular knitting machine comprising, in.

assenso ing in an laxial direction with respect to the needle cylinders and each comprising a stem with a projection at one end, a threadguiding part pivotally attached to .the projection, and spring means for normally -pressing the thread guiding part against the adjacent end of the stem so that said part is capable of lateral deiiection against the spring action, meansfory moving said guides radially with respect to the needle circle suchwise as to carry their threads across said circle, and means whereby each oi said guiding parts is caused to have a lapping 2. A circular knitting machine comprising, in combination, a needle cylinder, a second needle cylinder axially opposed to the ilrst mentioned cylinder, double-ended needles in said cylinders, a carrier arranged concentrically with respect to said cylinders, independent thread guides mountedto rock in said carrier for supplying design threads to the needles, said guides extending in an axial direction with respect to the needle cylinders and each comprising a bladelike stem with a projection at one end, a thread guiding part pivotally attached to the projection, and spring means for normally pressing the thread guiding part against the adjacent end of the stemso that said part is capable o! lateral deection against the spring action, means` for l action to the extent of at least two needles.

for the purpose herein speciiied.

a carrier arranged concentrically with respect to said cylinders, independent thread guides mounted to rock in said carrier for supplying design threads to the needles, said guides extending in an` axial direction with respect to the needle cylinders and being in the form of blade-like elements each provided with a thread guiding portion which extends at an angle to the blade, means for moving said guides radially with re- 'spect to the needle circle suchwise as to carry their threads-across said circle, a deecto'r which cylinder, double-ended needles in said cylin ders, a carrier arranged concentrically with respect to said cylinders. independent thread v guides mounted to rock in said carrier for supmoving said guides radially with respect to the needle circle suchwise as to carry their threads across said circle, a deilector arranged adjacent to the thread guiding' parts so that when. the guides are displaced radially from' their normal position the said parts are engaged by the deectorand deilected laterally, to theextent oi.' at least two needles, and means whereby, while the said portions are stili deiiected, the guidesare moved back across the needle circle, all for the purposes herein speciiied.

3. A circular knitting machine comprising, in'

combination, a needle cylinder, a second needle cylinder axially opposed to the ilrst mentioned cylinder, double-ended needles in said cylinders, a carrier arranged concentrically with respect to said cylinders, independent thread guides plying design threads to the needles, said guides extending in an axial direction with respect to the needle cylinders and each comprising a blade-like stem with a projection at one end, a thread guiding' part pivotally attached to the projection, and spring means for normally pressing the thread guiding part against the adjacent end ofthe stem so that said part is capable of .lateral deflection against the spring action,

means for moving said guides radially with respect to the needle circle suchwise as to carry their threads across said circle, a deflector which 40 is adapted for movement to and from an operative position adjacent to the thread guiding parts so that when the deflector is operative and the mounted to rock in said carrier each' adapted for supplying design threads to a group' of at least two of the needles, said guides extending in an axial direction with respect to-the needle cylinders and each comprising a blade-like stem with a projection at one end, a thread guiding part pivotally attached to the projection, and spring means forv normally pressing the thread guiding part against the adjacent end ot lthe stem so that .said part is capable oi lateral Ideilection against the spring action, means for moving each oi'. said guides radially with respect to the needle circle suchwise as to carry its thread across said circle, a deilector arranged adjacent to the thread guidingparts so that when the guides are displaced radially from their normal position the said parts are engaged by the dei'lector and deiiected laterally to the extent oi at least two needles. and means for causing selective wrapping oi the needles. for the purpose herein speckled.

4. A circular knitting machine comprising, in combination, a needle cylinder. a second needle cylinder axially opposed to the i'lrst mentioned cylinder, double-ended needles in said cylinders,

guides are displaced radially from their normal position the said parts will be engaged by said deector and deflected laterally to the extent of at least two needles, and means for operating and controlling said deilector, all for the purposes herein specined; i

6.' A lap thread guide which comprises a bladelike stem with va projection at one end, a fulcrum on the stem, at least one butt on the stem,

a pivot pin mounted in the projection, a thread guiding part pivotally attached gto the projection by means oi the pin, and spring means for normally pressing the thread guiding part against the adjacent end of the stem so that said part is capable of lateral deilectionaga'inst the `spring action, for the purpose herein specied.

7. A- lap thread guide which comprises a bladelike stem one end of which extends in the same v plane as but at an angle with respect to the remainder thereof to provide an abutment, a fulcruxn on the stem, at least one butt on the stem,

a pivot pin which is mounted at one side of the .stem so as to lextend lengthwis'epi the latter, a thread guiding part which is pivotally mounted upon said pin, and spring means for normally pressing the thread guiding part aga t the abutment so thatr saidpart is capable' of 1 temi a deiiection against the spring action, Io'r the purpose herein speciiied. y

' HENRY HAROLD HOLMES.

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