US391011A

US391011A - beyer

Info

Publication number: US391011A
Authority: US
Publication date: 1888-10-16
Anticipated expiration: 1905-10-16

Description

(No Model.) 1 1.BBYBR.

- STRAIGHT KNITTING MACHINE.

110.391.011. Patented Oct. 16, 1888.

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A. BBYER. STRAIGHT KNITTING MACHINE.

No. 391,011. Patented 0613116,` 1888.

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A. BEYBR.

STRAIGHT KNITTING MAGHINE.

Patented Oct. 16, 1888.

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10 Sheets- Sheet 4. A. BEYER. STRAIGHT KNITTING MACHINE.

Patented Oct. 16,1888.

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Patented t. 16, 1888.

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Patented Oct. 16

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Patented 001;.. 16, 1888.

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STRAIGHT KNITTING MACHINE.

N0. 391,011. Patented 001'.. 15,1888.

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NITED STATES.

PATENT OFFICE.

ALBIN BETER, oE CHEMNITZ, sAXoNY, GERMANY, AssIGNoE froA ERNST JULrUs sEYEEET AND HERMANN DONNER, BOTH oF sAME PLAGE.

SPECIFICATION forming part of Letters Patent No. 391,011, dated October 16, 1888.

Application filed May 3l, 1887. Serial No. 239,757. (No model.) Patented in Germany May 25, 1886, No. 38,715.

To all whom it may concern:

Be it known that I, ALBIN BEYER, a subject ofthe King' of Saxony,iu the German Ernpire, and a resident of Chemnitz, in the State of Saxony, Germany, have invented certain new and useful Improvements in Straight- Knitting Machines with Self-Acting Narrowing Apparatus, (for which I have obtained Letters Patent in Germany, No. 38,715, dated May 25, 1886,) and I hereby declare the following to be a full and clear description thereof, reference being had to the accompanying drawings, which form part of this specification.

The improvements described hereinafter, and shown in the drawings, relate to narrowing apparatus for knitting-machines, and their purpose is to effect the automatic lessening of the number of working-needles and of the number of loops in a row directly from the rotating shaft of the knitting-machine and without any manual operation.

The improvements consist in part in the combination of peculiarly constructed and moved covering needles with the common latched knitting-needles.

A characteristic feature of the improvements is that the knitting-needles from which the stitches have to be taken are forced upward by bars till the stitches lie on the latches of the needles. rl`he latches being thereby thrown or clapped back, the hooks of the needles are opened and then the peculiarly-moved covering-needles catch in the opened hooks of the latchneedles and are coupled with them. They draw the iatched needles from which the stitches have to be taken out of the row of the other latched needles till the stitches on them have slipped behind the latches.

rIhese improvements are represented in Figures 1 to 25, Sheets I to XI, of the drawings.

Fig. 1, Sheet I, represents a sectional view ofthe well-known Lamb knitting-machine with the invention applied thereto, taken on line M M of Fig. 2, Sheet II, looking to the left.

Fig. 2, Sheet II, shows a front view of a knit.

ting-machine with the narrowing apparatus applied thereto, the machine being shown as having four compartments or following heads77 Figs. 3 and 4, Sheet III, show parts of the needle-beds with the latehed needles and the lower part of the covering-needles in a transverse cross-section through M2 Ma of Fig. 2. Figs. 3 and 4 are sectional detail views, the former showing the needles uncoupled and the latter showing them in the position in which the covering-needles have caught by their grooves the hooks of the latchneedles, but before they get coupled with them. Fig. 5, Sheet III, is a side view of the knitting-machine and of the narrowing apparatus,viewed from the left of Fig. 2, and showing it on a larger scale, parts of the tive cams o ci o3 o4 o5 being only shown by dotted lines. Fig. 6, Sheet IV, is the same sidel view as Fig. 5, but shows the narrowing apparatus out of action. Fig. 7, Sheet V, is a partial top view showing the transporting contrivance for the holders of the covering-needles. Only parts of one row of needles with covering-needles are shown in this gure. The other rows opposite to them are not shown, for sake of clearness. Fig. 8, Sheet V, shows in end view some parts ofthe same contrivances asin Fig. 7. Fig. 9, Sheet V, is a cross-section of the transporting apparatus through line MJl M5 of Fig. 7. Figs. 10 to 15, Sheets VI and VII, show in a transverse crosssection through line M2 M3 of Fig. 2 the different positions of the latched needles, the covering-needles, and the slidebars ra R in the different phases of the narrowing process. Fig. 16, SheetVI, shows the new covering-needle in a cross-section through line M6 M7 of Fig. 17, and Fig. 17 is a top View of it. Fig. 18, Sheet VI, shows a longitudinal section on an enlarged scale, the latched needle and the covering-needle coupled together, the latch a being clapped back. Fig. 19 shows parts of the same contrivance in the same manner as in Fig. 18; but the latch a3 is laid onto the hook ai. Figs. 20 and 21, Sheets VIII and IX, are a side View and a front view of the mechanisms for the coupling and uncoupling of the knitting-machine and of the narrowing apparatus, certain pinions being shown in cross-section. Fig. 22, Sheet X, shows the forms of the five cams which are fastened to the driving-shaft o. Fig. 23, Sheet XI, shows a cross-section through line H Y', Fig. 24, and Fig. 24., same sheet, shows the same in side view. Fig. 25, same sheet, shows a top view of the bar 17 in the whole length.

The new covering-needle B, Figs. 16 to 19,

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Sheet VI, has ashape somewhat similar to that of a common covering-needle or point-shifter, as generally known and used in frames with ordinary hook or spring needles. Its groove x, however, is rather larger and longer than in the fprmer. Its lower end is not pointed, but sharpened to a iiat edge, o", for opening the latches, and near this end a hole, o, is eut through it, but only of a short length-say a little longer than the hook a2 of the knittingneedle a. The long groove a: and the short hole o distinguish the new covering-needle from that presented in the United States patent to Pepper, No. 180,785. Figs. 18 and 19 show the value of the short hole in enabling the covering-needle to give a to and-fro motion to the knitting-needle without touching the latch a3 when it covers the hook a2. By this arrangement a shorter narrow loop can be shifted from the knitting-needle to the covering-needle without being widened or broken, and the whole operation can be made in the most simple manner. Figs. 13 and 14 show the necessity of providing the covering-needle with a groove, x, of a certain length underneath, enabling it to clutch and couple the hooks of the latch-needles in different positions of the latter.

It is not possible to enter into a description 0f the nature of the narrowing apparatus before having remarked that the knitting-niachine forming the basis of the narrowing apparatus is a common knitting-machine of the Lamb type. A number of rows of stitches are rst formed by this knitting-machine, and after that the narrowing apparatus is set in action whenever required. lt must be remarked, further, that it does not come into operation till a row of stitches has been formed by the knitting-machine and till the needles of the latter are in their original positions again.

The narrowing apparatus consists of the following parts: 11 is a shaft rotating in the direction of the arrow A5, Figs. l and 22, and as all motions of the narrowing apparatus are produced by this shaft it is termed the narrowing-shaft. The cams o v2 v5 v v5 are fastened on this shaft u. Fig. 22 shows the special forms of these cams, and Fig. 5 shows parts of them in connection with their levers. They move the different mechanisms in the following way: When the narrowing-shaft v rotates, the cam o operates `on the lever-arm 1^', Figs. 5 and 6. The latter is pivoted at 1, and is provided with a roller, 1119, upon which the cam acts. The motion of arm 1- is transmitted by means of the connecting-bars 112 R'Z to the levers 143 104 It R, Figs. 2, 5, and 6, which are fastened on the rocking shafts c C2. The rocking shaft 1-5 runs through and rests loose in the levers r4, and a corresponding shaft, R5, is mounted in the same way in the left-handside levers R4 of the apparatus. 'Ihe levers 1A6 rl are connected firmly with .the rocking shaft T5 and the levers R R7 with the shaft R5.

of the levers rl R7 are fastened grooved bars rs R, arranged along and above the needle-beds On the ends yering-needles slide, as shown in Fig. 7.

J J. The springs 115B draw the grooved bars constantly downward. These grooved bars 18 R8 each have a U-shaped form on the under side throughout the length thereof, and two ribs, 1'9 111 and R9 R1,which rest on the needlebedsJ J When the bars are depressed, these ribs shift and hold the feet of the latched needles, as described farther on. In rotating, the cam 112 operates on the bell-crank lever c c', which is mounted loose on the shaft O2. 'Ihe arm c is pressed against the cam '0l bymeans of the spring cto. The two connecting-rods g y hangen the arms d D,which are mounted on rocking shafts d2 D2. On the same rocking shafts d D2 are fastened the arms d D', the upper ends of which form the bearings for the shafts d* D". These shafts CFD have firmly mounted on arms c D6 thereon other shafts, d4* Dht,

(see Figs. 5, 6, 7, and 8,) and form rocking` frames, on which the holders di' D5 of the cov- The coveringneedles b B, Figs. 5 and 6, are fastened to these holders, which can be laterally moved. The rotating cam c3 lifts the lever g', Figs. 5 and 6, which is pivoted loosely at and displaces the vertically-movable slide-block q* by means of its projection g3. The levers r6 R6 rest on the slanting surfaces of the slideblock qt. Vhen the slide-block qt is lifted, these levers 1^b R6 are also lifted and oscillate, as well as the arms 1"7 RT. When the slideblock g4 is lowered, the lever ends 1"G It sink in consequence of the pressure exercised on them by the springs 1"5 RE. The rotating ca ms u* operate on the rollers K of the bell-crank levers KK2, which oscillate on the rocking shaft D2 and move the Wedges Kt, Fig. 7. These wedges are each provided, as shown in Figs. 7, 8, and 9, with a slanting surface, K5, Figs. 7 and 9. The rollers K are held by springs K3 against the cams et. rlhe wedges K'i are mounted movably in the supports K, Fig. 9, which are fastened to the frame of the machine. The racks K7 are likewise movable in a longitudinal direction in the supports K, and are constantly held against the wedges K4 K5 by the spiral springs KB. In addition to this,there are on the supports K6 movable slides K, which are provided with the pawls K10, and with the arms K11 K12. The narrowingframes d4 als dwf, Fig. 7, and D4 D6 Dws are arranged on both sides ofthe machine and carry the movable slides K13 Kme.

In Fig. 7, Kls is shown on the right-hand, and K13* on the left-hand, end of the machine, both on one side of the machine. The other side of the machine, which is not illustrated in Fig. 7, has the same mechanism. The slide K13 is in connection, by a bar, K, with the holders d of the covering-needles,and the slide K13 l is in connection, by a bar, K, with the holders d5* of the covering-needles, Fig. 2.

Fig. 2shows that there are two coveringneedle holders for each knitting-head H,which may be moved in opposite directions to one another, as shown by the ai rows in Fig. 2.

If the rotating cams c* and their appur- IOO IIO

I zo

tenances have brought the wedges K2 which are arranged on both ends of the machine, into the positions shown in Fig. 7, the racks K7 K7 have been moved toward each other, and they have moved the slides K K. These slides KU K9 have moved, by the projections K, the slides K13 KV* and the bars Kl K15 and the holders (Z7 and d5* of the coveringneedles, Fig. 7. The covering-needles Z) b', Fig. 7, have been displaced laterally in opposite directions. The samelateral movementof the coveringneedles which hasjust been described for that part of the machine illustrated by Fig. 7, and which has been produced by the projections K11 of the slides K, takes place in the same manner by the projections KL K12 of the slides K9 on the other side of the machine. Vhen the wedges K* are moved back, the slides K9 remain inactive in their position on supports K, the racks K7 slide along under them, being held by the springs Kq against the wedges K4. The pawls Kw, which are mounted on the slides K9, slide during this motion over the racks K7 and fall into other teeth of them. The rotating cam e7 moves the lever 97 upward, Figs. 2, 5, and 6. The latter is mounted loose and can turn on the pin 09. The projection p of the slide-block p' rests on the lever gz, the slideblock p being movablein avertical direction. The arms l?2 p7 are mounted on the shafts d D, and tarn these shafts d* D", and with them the whole framing d d' and DG DW, the lower ends of the arms Vp7 1?AJ rest-ing on the slanting surfaces of the slide-block p. By the lifting of the slide-block p these frames d* d (lbf D* D6 D* are made to oscillate with the shafts d* D4 by means of the levers p2 P2. When the slide-block p is lowered, the lever ends p7 P2 are drawn downward by the springs T7 R7, and the frames move in the opposite direction.

The knitting machine can be worked either by hand or power and works in the following manner: The driving-pulley 2, Fig. 1, with the fly-wheel 3 rotates loose on the shaft 1, and on the same shaft the toothed wheel 7, whose nave forms part of the coupling 36 37,'also revolves. The part 36 of the coupling is held against part 37 by means of t-he spring 4l. To begin the luiittingoperation, it is necessary to press the handlever 80, Fig. 20, in a downward direction, and by means ofthe cam Slat the other end the cranked lever 83 81 is thereby caused to move round its center 85, and so the friction-cone 4 is brought in contact with the drivingpulley 2, and so theshaft 1 is caused to revolve, and with it the wheels 7 8 are brought into motion. By means ol' the connecting-rod 9, which is pivoted to wheel 8 and also to the arm 10 of the frame 10 11, the frame 10 11 is oseillated. The saddle 13b is joined by the link 13 to frame 10 11, and also has connected therewith the bars 1-l,which traverse the whole machine, and to these bars 14 are fastened the locks 15 of the knitting-machine. The saddle 13" is guided by means of the tworods 12, and the locks 15 are moved to and fro by these sliding bars 14, the needles being moved up and down by the cams 15, Fig. 2, in t-he wellknown manner to form the meshes.

Figs. 23, 24 and 25, Sheet Xl, show detail views of the mechanism for moving the locks and the th read-carriers, the locks 15 15 being fastened to the bar 14, which traverses the whole machine and is moved to and fro by the saddle 13h and frame 11, Fig. 2, Sheet 1l. To the rod 17 are fastened the threadcarriers 16 16, the bar 17 being voperated at every stroke ofthe machine by the catches 19,whieh are fitted to the end locks, 15 15.

Each stroke of the leverframe 10 11 forms one row of loops, and after two strokes the ratchet-wheel 2G is moved the distance of one tooth by means ofthe bell-crank lever 26b 26, Fig. 20, through the pin 26'l in the wheel 24, this wheel 2JL being put in motion by the shaft 1 through the wheels 21, 22, and 23. By the turning of the ratchet-wheel 26 the chain lying on it, to which the stops 27 27 arehooked fast, is moved up. The stop 27 presses against the lever 28, whereby the lever 28, pivoted on pin 28, is raised and the knitting operation of the machine put ont of gear and the narrowing apparatus brought into work.

The narrowing process is brought into play in the following manner: Thestop 27 lifts thelever 28 and drawsbaek the hook 51,which is on the arin 28" oflever 28,and thus leaves the pin 5() of the toothed wheel free, this wheel 25 having a certain nu mber ofteeth left outopposite to the pin 50. At the same time thebar 29, pivoted to lever 2S, having a part beveled at 30 on its back side, Fig. 21, pushes the hinged joint 31 in such a position that the pin 32 of the wheel 24 may catch on it and turn it, and with it the wheel 25, till the teeth of wheel 25 corne in gear with the teeth of wheel 21 again. At this point the knitting operation miist be stopped, and the stopping is accomplished in the following manner: On the shaft vi are fastened the two cams 33 and 38. the former moving the bell-crank lever 31 35 and drawing the coupling 36 out of gear, while the latter, acting on roller 39, moves the lever 39, which is furnished with a projection, 39C. This projection catches in the recess 10 provided for it in the wheel 8, and when this is accomplished the knitting operation is stopped and the machine commences the operation of narrowing, which is done by means of cams v to o5 fastened on the shaft o, Fig. 2.

The way in which the narrowing apparatus is constructed and arranged is as described, and works as follows: \Vhen the narrowing process begins, the parts of the apparatus are in the position shown in Fig. 6. The cams v' v2 first begin to operate. The first, c', presses down the lever-arm 1" with its roller rw, turning the levers r3 i" Rf R* by means of the connectingbars r2 1&7, so that the rocking shafts W7 R7 are forced to rise. On the other hand, the

cam e", in co-operation wit-h the springs WR. makes the slide-block q and lever ends 9' R6 IIO ISO

rl RT descend. By means of these levers r6 R r7 RT the grooved bars rs RB are also made to descend'till their ribs r9 r1" B R1 rest on the needle-bedsl J J and encircleor cover the feet a A of the knittingneedles a A. When the lever-arm r is forced farther down by the cam v', the levers r3 r* R3 Rf move farther round, and by this means the needles a A are forced up- `ward till they occupy the position shown in Figs. 4 and 5. The hooks ci2 A2, Fig. 4, ofthe /knitting-needlcs then project out of the needle-beds JJl and the stitches of the knitting lie on the opened latchesc A ofthe knittingneedles. During this motion of the cams c and @a the cam o2 has turned the bell-crank lever c c in such a way that the lever-arm c has sunk and the arms d dD D have been turned by the connecting bars g y. The arms d D have been moved toward each other by this motion of the cam n2. By means of the arms p2 l?2 and slide-block p and spiral springs r1 B16 the covering-needles b B have been moved above the latched needles. (See Figs. 3 and 5.) The cam o5 then allows the slideblock p and the arms p2 l"z to descend still farther, the springs rm R1 causing this movement, and also causing the covering-needles b Bto sink so far that the grooves x of the latter encircle and catch the hooks of the knitting-needles a A and lay themselves on them, Fig. 4.

In the following description those knittingneedles seized by the coveringneedles are marked a for the sake of clearness, while the remaining knitting-needles are marked ct A, Figs. 10 and l5.

Owing to the effect of the cam o2 and spring ci on the lever c c', the bars gg', the arms d d D D', and the covering-needles b B are forced upward. The covering-needles slide upward, with their grooves resting on the knittingneedles, till the hooks of the knitting-needles slip into the holes o of the covering-needles. The k nitting-needles are then coupled with the covering-needles, as shown in Fig. 18, and therefore, when the latter are forced farther upward, they draw the knitting-needles up with them. The stitches on these needles finally slip behind the'latchcs (see Fig. 10) of the needles a.

It must be remarked here that all needles a A a of the two rows of needles are shoved upward by the ribs r9 R till the stitches have slipped on the opened latches of the knittingneedles, Figs. 3 and 4. On the other hand, the number of the covering-needles is small, and it is only on the needles seized by them that the stitches slip behind the latches, as in Fig. 10. The covering-needles b B and the grooved bars rg RB then descend, those knitting-needles which were forced upward by the ribs r9 R9 and that are not seized by the coveringneedles being forced down again by the ribs r1"v R10 till their stitches have slipped into the hooks again; ybut the latches of those needles coupled to the covering-needles are thrown over the covering-needles by this downward motion and the stitches slip over them onto the shafts of the covering-needles, Fig. 11. The needle-beds J J prevent the stitches from slipping downward on needles a. These motions are effected in the following way: The motion of the grooved bars r Rxa is caused by the cam c', in connection with the lever r', roller r1, connecting-rods r2 R2, levers r3 R3 rt Rt, and springs r Rm. the covering-needles is caused by the cam v2, in connection with the lever c c', the connecting-rods g g', the armsddD D, the levers 102]?2, and the springs @mand R16 rw. After the stitches have been transferred from the knitting-needles a onto the covering-needles b B the needles a A and the bars rs R8 remain inactive in the position shown in Fig. 11; but the needles a are forced by the cam o2 and its appurtenances still farther downward till their feet touch the inner edge of the ribs rf R9, Fig. 12. As the needles a A have remained in the position shown in Figs.`11 and 12, an intermediate space, 6, is thus formed between their feet and those ofthe needles a, (from which the stitches have been removed.)

The covering-needles b B then makea combined or twofold motion. a little farther, (the needles a cannot be forced farther down as their feet rest on ribs r9 R9,) this motion being` effected by the cam o and its appurtenances; secondly, the covering-needles are lifted a little from the needles a by the motion of the cam of and its appurtenances. rllhe covering-needles are thus uncoupled from the needles a, Fig. 13, and the hooks a2 A2 have been brought out of the holes o by this combined or twofold motion. The covering-needles are then forced farther down by means of the cam o* and its appurtenances,the coveringneedles, with their grooves, sliding along the hooks oftheknitting-needles and throwing back the latches of them (see Fig. 13) in descending. For this reason the covering-needles mustbe provided with a flat edge, o2, Fig. 17. The stitches are now on the covering-needles. The descending motion of the latter ceases and the slide-block p is lifted higher by the cam v5 and its appurtenances. By this means the arms p2 l"2 are raised and the covering-needles (bearing the stitches) are lifted entirely off the knitting-needles and brought into the position shown in Fig. 14. When the covering-needles have reached this position, the cam 04,with its appurtenances, begins to act and forces the slide K to move sidewise. The holders dD, with the covering-needles, are displaced in a lateral direction by the co-operation of the parts K K12 K13 K, Snc., Fig. 7. The covering-needles now stand with their stitches exactly over the knitting-needles, but laterally displaced, as is shown in Fig. 7.

In order to explain the narrowing process more minutely,an example of this lateral displacement will be now described. Let it be supposed that by the process already described The motion of.

They first descend ICO the stitches have been taken off the needlesa y into the position, Fig. l5.

toaofFig. 7. Theirlatcheshavebeenopened by the priordescribed operations, and their stitches are at this time on the coverin, ;nee` dles l' to 5'. The covering-needles (shown in Fig. 7) have, for instance, been moved sidewise by a space occupied by two needles, so that no covering-needles stand over `the first two knitting needles, a and o?. The next three knitting-needles have covering-needles above them, and the next two knitting-needles, a a A A, have also covering-needles above them.

The further narrowing process is as follows: The latches of all the working knitting-needles are still open, and now the covering-needles l' to 5' descend and are laid with their grooves upon the hooks of the knitting-needles a a* a5 a a by the operation of the cam o5 and its appurtenances. Then the cam v2 acts with its lever c and spring c, and causes the covering-needles 1' to 5' to move upward again; the hooks of the knitting-needles o. a." 0.5 fall into the holes 0 of their covering-needles. The knitting-needles a a* ai are thus coupled with their covering-needles l 2' 3' and are drawn upward till these needles are in the same position as the needles ce a a. Then the hooks of the two next knitting'needles a a fall into the holes o of the covering-needles 4' 5', and the latter are likewise coupled with the knittingneedles. It must be noticed that only the two needles a and a2 have remained in their low position, Fig. l5,for they have notbeen affected by the motion of the covering-needles just described. At the same time that the upward motion of the covering-needles begins the grooved bars rs R3 also begin to move, and in the following way: The bars rs Re are lifted from the feet of the knittingneedles, advance a little, and descend again onto the needle-beds J J' The feet of the needles a a2 that have remained stationary are thus brought under the ribs 1' R9. (See Fig. l5.) The motion just described is caused by the cams c' and e in connection with their appurtenances. The bars Rs rg slide upward on the needle-beds J J', and the working knitting` needles o. Uf a a c are thereby forced upward. The covering-needles move upward at the same time, whereby the stitches on the covering-needles slip downward on the knittingneedles a to a5 a a. The stitches have thus passed over the opened hooks of the needles as a* a5 a a; the stitches of those covering-needles 4 5 are stitches transferred onto a a, whereas the stitches of the covering-needles 1' 2' 3' have slipped into the empty hooks of the knitting-needles 0.3 a* a5. The operation j ust described is carried out by the combined effect of the cam c and its appurtenances on the bars ad RB, and by the effect of the cam o and its appurtenances on the covering-needles. After this the covering-needles perform an other twofold combined motion. They are first forced downward a little by the cam o2 and its appurtenances, and then they are removed (lifted) a little oft" the knitting-needles by the cam e5 and its appurtenances. The uncoupling of the covering vneedles and the knitting-needles has been carried out thereby. The narrowing-needles then return to the position shown in Figs. l to 6. At the same time the bars frs lts are moved downward by the cam o' and its appurtenances, and draw the needles af" t 0.5 a a a into their lowest position, Fig. G-that is to say, they are drawn back till the stitches are in the hooks again. By means of this motion the lower edges of the ribs r R9 press the empty needles a' and d' entirely down under the cams 15a of the locks, Fig. 2, so that they cannot come into any further action. After this the continued effect of the cams o' and e3 and their appurtenances lifts the bars ra RS completely off the feet of the needles and off the needlebeds J J', and they are brought back into their point of rest. (See Fig. 6.) It must be mentioned still that the narrowing apparatus carries out all the operations described during one revolution ofthe narrowingshaft c.

It is evident that this apparatus can 'work with one row of needles only, if such be substituted for double row shown and described.

Having now fully described my invention, what I claim, and desire to secure by Let-ters Patent of the United States, is-

l. A covering'needle, B, having a groove, and near to its lower end a hole, o, in combination with a latch-needle, a, for the purpose of guiding and catching the hook a ot' the latch-needle and for moving the latch-needle to and 'fro by means of the covering-needle.

2. The combination, with a `row of latchneedles, of the covering-needles, each having a groove on its under side and a hole near its end, the head d5, the frame d d df, the lever p2, the slide-bar p p', means for raising said bar, levers d', and means for moving said levers, whereby the covering-needles may be coupled with the latch-needles and uncoupled therefrom,A and whereby while coupled the latch-needles may be moved endwise, substantially as described.

3. The combination, with the two rows of latch-needles, of the two rows of covering-needles, each having a groove on its under side and a hole near its end, the heads carrying said coverngeneedles, the two rocking frames dL d d* Dl D6 Df, devices for rocking said frames upon their pivots, the levers d d' D D', the connecting-rods g g', the levers c c', and the actuating-cam, substantially as described.

4. The combination, with two rows of needles, of two rows of covering-needles, heads carrying said covering-needles, slides connected with said heads, the rocking frames d* d6 di* D4 DG Dh?, on which said heads are mounted, the slide K, having arms K K12, adapted to move the heads of both rows of covering-needles at the same time, and devices for moving said slide inwardly, substantially as described.

5. The combination, with the grooved bars IOO T8 R8, of the levers r6 rl RG R7, rock-shafts WR, ating-cani for said lever, substantiallyas de the springs r R15, the slide p', and devices for scribed.

[O raising said slide, substantially as described. In Witness whereof Irhave hereunto seb my 6. The combination, with the grooved bars hand in presence of two Witnesses. 5 frB R8, of the levers r6 T7 RG R7, the springs w15 ALBIN BEYER. R15, the slide p', devices for raising said slide, Witnesses:

the rock-shafb rs R5, the levers r3 r* R R4, the P. MHLNER.

connectingrods r2 R2, the lever r', and the acbu- B. ROI.