US1605135A - Combing machine - Google Patents

Description

Nov. 2 1926..

J. W. NASMITH CDMBING MACHINE Filed Sept. 3, 1924 JHM MA Jug.,

Patented Nov. 2, 1926.

recaps JOI-IN WILLIAM NASMITH, OF MANCHES TER, ENGLAND, AssrGNon VTo. NAsMITHs rA'rENTs I .nurrnn or Mancrrnsrnn, ENGLAND-- COMBING MACHINE.

Application filed September 3, 1924, Serial No. 735,652g`an in Grreat Britain May 22d, 1924.

In the specification to United States Patent No. 1,466,846 granted to me there is described a feed nipper for a Nasmith combingr machine which, after detaehing- 'has been completed, draws back into the said nipper ing the feed nipper during 4the backward `movement also alters the time Vof closing during the forward movement to begin the feed, and, as a consequence, the amount of mate# rial fed.` n

The present invention has for object the removal of the defect above indicated by making the point of openingof the1 feed nipper during the backward movement quite in'- dependent of the point of closing during the forward stroke, and to provide mechanism "which'will, allow ofthe regulation, in a simw ple and exact manner, of the amount of material drawn back into thenipper and consequently ofthe amount of waste taken out,

this regulation not affecting' in any way the amount fed at each stroke, and which amount can in turn, be regulated indepem dently of the amount drawn back. My invention contemplates furtherthe provision `of means whereby the feed on any of thesix combingheada or all of the six when desired,

may be thrown outof action, and further, means for alteringthe position of the feed nipper in its relation to the jaw of the main nipper on all six heads simultaneously.

I n carrying the invention into effect I provide the main nipper jaws, the lower main nipper plate having;` a bacl'rward and forward movement as described in specification to my prior patent. Upon this plate or on "a 'member attached thereto I pivot a lever bearing the upper feed nipper jaw, which latter is normally held against the lower feed nipper jaw by spring'tension. Contact `means are provided against which during the backward movem entfo'f the main nippel",A andV hence of the upper feed nipper'jaw-bear` ing lever, the said lever bearing the upper feed nipper j aw abuts, so that the upper lfeed nipper jaw is raised against thel spring tension. During the return or forward movement the Contact means are varied in relaby; adjustment of the point atwhich the levers `willjlose Contact with the'contact meansl which caused the upper feed nipper to open. Conveniently the lower feed nipper jaw may also be'inounted on a leverwhich is pivoted uponthe mainlower nipper plate or on a' member borne thereby'. Restraining means are provided for this lever so that as the main lower nippel" plate rswings the lower feed nipper will move also, but at a rlifferent rate of speedto the main lower `nipper plate, as required by the functionsof the apparatus.

Furtheig "by the arrangement proposed the feed of oneor all of the combing heads may be rendered inoperative as desired by merely `removinglthe Contact means out of theway ofc-ach lever bearing the upper feed nippe'r jawythe latter in that'case not opening during' thelswing of the main lower nipper platelfv "Avery convenient means'for carrying the 'invention into effect will now be fully described, reference beine' had to the accompanying drawings, wherein Figure l is a lorigitudinal` section .eleva tion through one head of a combing` machine ofthe Nasmith type; Figure 2 isa partial position of the organs at one end of such head, itbeing understoodthat there is a corresponding set of'these members at the other end o f'thevhead; andligure 3 isa detail of mechanism for putting; the feed in any one head ont of action. R- eferringftdFigure l, O indicates the combing cylinder. 'shown diagrammatically,

and -Dthe 'detachinpg roller. VN is the pivot upon which thenipper arms N1V swing to and fro. Bolted to the arms N1 are the uprights N2,-these`u1: rights being united by a bridge B to whichis secured the lower jaw P2 of the mainfnipper.`L The point lofv` this Alower jaw ftraverses an 'are indicated in dotted lines at C2'betwe'en the radii C and C1, beingoperlated 'by ytheii'sual connections (not shown' `in the drz'tivirik'gs)` from theoscillating nipper shaft W.

. 'At each endlo'f the'bridgeB Yis formed a bossth'ese-bosses bearing'xedstuds They arms aof the top nipper jaw are vpivotedfon these studs, but they are not shown, as

their descri tion is not necessary for the eX- planation o the present invention, and their omission avoids complication in the drawings.

Upon the studs 1 are also ivoted freely the levers L, one at each si e of the nip-y per. Solid with or secured to these levers L are the short arms L1 bearing the fixed pins 2. The lower ends of the levers L are connected by rods 8 to a swivel 9 pivoting on the lever arm 10 keyed to a shaft 11, which shaft is fixed when the apparatus is in operation. Upon the pins 2 are also pivoted freely bell crank arms 3 which carry the upper jaw F1 of the feed nipper. The lower ends of these arms 3 are connected by a rod 12 centrally of which is fitted a bowl 13. A spring S connects the rod 12 to a pin 23 on a lever 24 onthe shaft W. this spring therefore keeping the jaw Fl tightly pressed downwards on to the lower jaw F of the feed nipper. This lower aw F is .secured to arms 4 pivoting at one end on the pins 2 and at the other end on pins 5 fixed in a link 6 which swings freely on pin 7 secured to the cheeks N1.

The pins 1 move to and fro with the nipper plate P2 along an arc indicated in dotted line at .L1-A1 and obviously, if the levers L were not controlled the whole system would swing undisturbed with the pins 1 and lower jaw F of the nipper remaining in the same relation to the plate P2. The arrangement of the swivelling rods 8 however compels the lower ends of the levers L to followvan arcuate path indicated at R-R1, around the centre 9, as the pins 1 trave-rse their arcuate path A-A Levers L therefore pivot on the pins 1 and as a result the pins 2 and the members 3 and 4 are drawn backwards and change their rela-tive positions with regard to plate P2. The bowl 13 on shaft 12 would normally, in the operation above described, follow an arc indicated in dotted lines at N3. Pins 2 moving` backwards, however, as the point of the nipper plate P2 swings along its arc A-A1, the bowl departs from this arcuate pat-h and meets an inclined face 16ZL at the dotted line position. 13a, forcing it to deviate further from such path in its progress to dotted line position 18". The top jaw F1 of the feed nipper is thus raised around the centre 2 against the tension 0f spring S. It will be evident therefore that the position of inclined face 16a in relation to the arcuate normal path of the bowl 13 will determine the time of opening of the upper jaw F1 during the backward movement of the main nipper when the feed nipper opens to release the lap, to regulate ,thev

amount of material drawn back.

The inclined face 16a is formed upon or secured to the extremity of an arm v16 pivoting on shaft 15 and bolted to anarm 14 keyed on said shaft 15. A Set screw or the like 17 in arm 16 and traversing a slot 18 18 in arm 14 serves to adjust the arm 16 in relation to arm 14. Thus, the position of inclined face 16aL may be regulated in relation to the path of the bowl 13.

If the shaft 15 and its connected parts, and arm 16, remained stationary it will be seen that the inclined face 162" being stationary, the upper feednipper jaw F1 would open and close at the same point owing to the action of the bowl 13 against such fixed face 16:L in both directions of traverse of the said bowl, there being thus no effective feed. The lever 16 is however controlled from the cam M. operating the lever arm 19 through cam bowl 2O pivoted on the end of said lever arm. the other end of the lever arm 19 being mounted on shaft 15 and adjustably secured to the shoe 21 provided with set screw 22 and also free on the shaft 15. Solid with rfwnber 21 is the arm 2T provided with two holes 28 and 29. A lever 30 is keyed on the shaft 15 provided with a hole adapted to register with either of the holes 28 and 29 as desired, a pin passing through the two corresponding holes thus seciuing members 27 and 30 in either of two positions. During the rearward movement of bowl 13. the bowl 2O is running on the semi-circular face of the cani M and there is therefore lno motion lof the arm 16 and its inclined face 16a. It is obvious that cam M could be moved. considerably around its centre without affecting the face 16, that is. without altering` the time in the backward stroke when bowl 13 makes contact with such inclined face say at the position 13". and this time can be altered by changing the relative position of arm 16 to lever 14 by means of the pin and slot 17 and 18.

rI he cam isregulatable upon its shaft. On the forward nipper stroke the bowl 2O engages the effective or actual cam surface thereof, thus withdrawing the inclined face 16L by movement of the arm 16. Itwill thus be seen that by adjustment of the cam M the time that the bowl 13 will leave the face 16a can be easily and accurately regulated and long before the bowl 13 again returns to make contact with such face on the inward stroke of the feed nippers the said face has been restored to its normal position for that'purpose by the bowl 19 coming upon the circular edge of the cam M. Effectively therefore the time of opening the feed nipper can be varied in regard to the time of closing, by changes in the relation of the arcuate paths traversed by bowl 13 on the backward andforward nipper stroke, and this rel-ation between the paths can be varied as desired as above described. The amount of vmaterial drawn back within the nipper can therefore as a result be varied in relation to the amount fed forward.

The feed nippers can be adjusted in relation to the points of theiiI bottom plates P2 by the adjusting nuts on the rods 8. When the feed nippers of each combing head are thus equally adjusted they can all be moved further from or nearer to the said point of plate lJ2 by loosening the clamping bolt 26 which passes through slot 25 in each levei 10 and turning the shaft 1l the required angular distance, bolt 26 being then again secured.

A method of arresting the feed on any individual combing head is shown in Figure 3 in elevation. rlfhe arm 16 bearing the inclined face 16L has lugs 31 32 to receive pins and Se. The inclined face 16a is a separate member to arm 16 and is hinged to the latter by pins 33. A latch 35 is hinged on pin 34, and has two notches 36 formed therein. In the arm 16 is fixed a pin 37. Thus, to withdraw the face 16fl so that the bowl 13 will not make contact with it, the latch 37 is lifted and the appropriate notch allowed to drop over pin 37, no contact between bowl 13 and the inclined face thus taking place to raise the upper nipper jaw F1.

To arrest the feed of all the nippers of each of the heads simultaneously or to arrest the feed of each of them individually, it is only necessary to withdraw the inclined face 16a out of the path of bowl 13, upper nipper jaw F1 thus remaining closed.

As already explained, arm 27 has two holes 28 and 29 and lever 30 has one hole which may register with either of them. Normally, during the operation of the machine, the hole in arm 16 will register with hole 29, a pin passing through them holding these members together in fixed relation. To withdraw each arm 16 in the combing apparatus out of contact with the bowl 13 ofll each head, the pin is withdrawn and the shaft 15 turned until the hole in each arm 2T registers with hole 28 in each lever 111-. The pin is then passed through the two now corresponding holes and the feed on all heads is stopped.

I claim l. In a combing machine an oscillatory lower nipper plate, lever supports for the said plate, a pivot-bearing element mounted on the said lever supports and on the pivots of which are fulcrumed further levers to which are attached upper and lower feed nipper jaws, an arm bearing a contact face adapted to oscillate to and from the oscillatory path of the free ends of the levers bearing the upper feed nipper jaw. meansfor adjusting the said arm, and means for varying the oscillation period of the said arm in relation to the said path of the said lever ends on the forward movement of the said arm and lever ends, for the purpose hereinbefore set forth.

2. In a combing machine having the feed nipper jaws arranged as claimed in claim 1, restraining means for the lever b'earing'the lower feed nipper jaw to cause said leverto move around its pivot point as the main lower nipper plate swings in its backward and forward movement, and a swinging support for the front end of the nipper jaw, for

the purpose hereinbefore set forth.

3. In a combing machine arranged, as claimed in claim 1, contact means to move the upper feed nipper jaw lever around its pivot point and to vary the relation of the contact means and lever, such means comprising an arm radially movable upon a shaft having an inclined' face on the end thereof, a bowl carried by the upper feed jaw levers and making sliding contact with the inclined face during the backward movement of the levers, and a cam and rod operating the inclined face-bearing arm to alter its relation to the bowl on the forward movementk only of the nipper-bearing lever to vary the length of contact between the bowl and contact face of the forward movement .in relation to the length of contact on the backward movement.

4. In a combing machine having the features claimed in claim 1, an arm and a lever to which the contact bearing arm .is adjustj ably secured by a pin and slot to adjustk the contact face in relation to the path of the ends of the upper feed nipper jaw bearing levers, substantially as set forth.

5. In a combing machine having the features claimed in claim 1, a lever pivoting on a cam rod sha-ft, an arm bearing the contact face. holes in the arm and lever, and a pin to pass through a hole in one member and through either of two holes in the other member, substantially as and for the purpose hereinbefore set forth.

6. In a combing machine having the features claimed in claim 1, an arm bearing the contact face, such contact face being a member hinged to the arm, a latch portion on the contact face, such latch having a plurality of recesses therein, and a stud on the Contact face-bearing arm to fit in either ofthe recesses in the latch substantially as and for the purpose hereinbefore set forth.

7. In a combing machine having the nippers arranged as claimed inclaim 1, a. swivelling rod attached to the lower end of the levers bearing such jaw, a lever having a swivel bearing for such rod, a shaft supporting` such swivel bearing lever, 'an arcuate slot in the swivel bearing lever and an adjusting rod passing through such slot, substantially as and for the purpose hereinbefore set forth.

In testimony whereof I have hereunto set my hand.

JOHN WILLIAM NASMITHf

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