US616716A - Machinery for cutting weft pile fabrics - Google Patents

Description

No. 6I6,7|6. Patented Dec. 27, |898. J. J. MANN.

MACHINERY FOR CUTTING WEFT PILE FABRICS.

y (Application filed Dec. 27, 1897;) (No Model.) 5 Sheets-Sheet 2.

INI/EDITOR JOHN James VANN. l

H/sfIn-ORNEYS Tn: nofws PE1-zus co., Faowumo.. WASHINGTON, n. c

No. 6I6,7I6. Patented Dec. 27, |898.

J. J. MANN.

MACHINERY'FOR CUTTING WEFT PILE FABRICS.

(Application led Dec. 27, 18973 (No Model.) 5 Sheets-Sheet 4.

N INveNroR N James MANN HIS TTORNEYS 7N: mams verras ca. momma.. wAsnmaYoN. u. c.

No. s|s',7|e'. Patented nec. 27, |893.

l .1. .1. MANN.

MACHINERY FCR CUTTING WEI-"I PILE FABRICS.

(Appiicat'ion led Dec. -2'?, 1897.)

(no Model.) s shanty-sheet s.

lNvENToR vvlTNsssE'- JOHNJNIANN gw I BUWHMMJDW Hfs ATTORNEYS NITED STATES PME-NT FFICE JOIIN JAMES MANN, OF PARIS, FRANCE.

MACHINERY FOR CUTTING WEFT PILE FABRICS.-

SPECIFICATION forming part of Letters Patent No. 616,716, dated December 27, 1898. Application iiled December 27, 1897i Serial No. 663,702. (No model.)

To @ZZ whom it may concern/.-

Be it known that I,`JOHN JAMES MANN, a subject of the Queen of Great Britain and Ireland,formerly of Cheadle Hulme,in the county of Chester, England, now residing at Paris, France, have invented new and useful Improvements in Machinery or Apparatus Ernployed in Cutting Weft Pile Fabrics, (for which I have obtained British Patent No. 16,37 9, dated August 28, 1894, and German Patent No. 85,431, dated December 28, 1894,) of which the following is a specification.

This invention relates to. machines employed in cutting weft pile fabrics in which the fabric is drawn past a stationary knife to cut the pile in short lengths of the piecefor example, as described in the specification of Letters Patent No. 475,620-the object being to dispense with the reciprocating motion such as described in the last-named specification. v

My invention will be readily understood from the following description on reference to the accompanying drawings, in which- Figure lis a section through the driving end of a machine constructed according to my invention, showing about one-half thereof. Fig. 1LL is a similar view of the remaining portion of the said machine. Fig. 2 is a plan view of the part shown on Fig. 1. Figs. 3 and 4 are detached parts hereinafter more particularly referred' to; and Figs. 1b, 1C, and 5 are diagrams, drawn to a smaller scale, illustrative of special parts or modifications hereinafter described.

According to my invention I employ a pair of chains a, (or their equivalent,) mounted upon two pairs of chain-pulleys b, revolving upon suitable studs c. These chainsa carry a series of transverse bars a', of suitable material, forming a lattice upon whichis stretched a length of the piece of fabric the pile of which is to be cut, as shown by the dot-and-dash line d on Fig. 1a and Fig. 5. Each end of the fabric is rolled upon a suitable roller e' e2 within the loop d of the fabric stretched on the lattice a a', the said rollers e' e2 being mounted in a suitable frame f, capable of motion as hereinafter described.

The lattice a is provided with a suitable tension device, so that the fabric to be cut may be stretched thereon, as desired. This device consists or may consist of a split 'roller y g, mounted on side plates or brackets g, carried by the chains a. (See Fig. la.) The parts ZX of the cloth coming from the rollers e e2 are passed through the split roller g to form the loop d and are tightened to the desired extent by the ratchet g2 and springcatch g3. One end of the loop d is guided by the bar g4, Xed to or forming part of the brackets g', and the other end by the roller g5, carried by the said brackets g. (See also detached plan view Fig. 3.) One pair (or both pairs) of the said chain-pulleys b being driven from the driving-shaft h and gearing hf h2 or otherwise and a suitable stationary knife of any known kind having been set in at about the bar g4 in the first race, the cloth will be caused to travel beneath the said knife until the setting-in bar g4 comes -around to the starting-point again-that is, about the position shown on Fig. la-when the apparatus is stopped and the knife is set in to cut the next race. It will be seen that the machine will not require to be reversed to bring it to the starting-point again, the interval of time between each cut being required only4 for setting in the knifeinto the neXt race.

The frame f, carrying the roll or rolls of the piece not stretched upon the lattice a d',

(see Fig. 1,) is caused by the chain 9 or other gearing to turn over gradually as the lattice travels once for each motion or stroke of the said lattice,as seen by the two diagrams Figslb and 1c, Which showthe lattice in two positions as it travels from and to the position shown in Figs. 1 and la. By preference means are employed to take up or dispose of the slack part of the fabric dx between the said roll or rolls and the tension device g g2 g3, above described, as the latter in its traverse with the a with regard to the frame f as it rotates.-

As will be readily seen from Figs. 1, 1b, and l",

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the parts dx of the cloth are almost straight, Fig. 1C, when the tension device g g2 g3 is farthest from the frame f; but as the tension device g g2 g3 reaches the position nearest to the frame f, Figs. 1 and l", the rollers k take such positions with relation to the frame fas to take up the slack.

The transverse bars which form the lattice aa are cranked downward or mounted on short hanging arms a2, as shown also on the detached cross-section of the lattice, Fig. 4,

' or the bars may be otherwise so formed that those on the upper part of the chain can hang down or be depressed and leave the fabric g to be cut, (see Fig. 1%) thereby forming a cutting-flat. The bars a are raised again to pass around the pulley by means of suitable inclines a3. (See Fig. la.)

The frame of the tension device is so made that as the knife leaves the loop of cloth dat the top of the roller g5, Fig. l, it leaves it at a slightly-higher level than where it is set in, (the knife being set in, as above described, at the level of 94,) and the said cloth CZ is depressed slightly at the cutting-flat by passing under rollers m m. These depressing-rollers may be mounted in spring-bearings 'It u', as seen at Figs. l and 1, and raised at the proper moments by cams or eccentrics 0 o" to allow the tension device above described to pass freely beneath them. The specific form of spring-bearings illustrated in the drawings comprises in each case a pair of brackets n fn', in which are mounted the journals of the rollers m m. These brackets n n are carried by a cross-bar n2 of square cross-section, Figs. 1, l, and 2, in fixed angular guides n3, and each bar is acted upon by push-springs n4, which tend to press the bar n2, its brackets, and the rollers m m downward.

The rear end of the fustian-cutters knife is preferably steadied or supported by a cuttingtable p in the manner usual in machines where the knife is held by the operator, and as the raising of the rollers m m slightly raises the cutting-level I propose to alter the level of the cutting-table p by mounting it on a pivot at p' and tilting it at the required periods by a side leveror levers 192, depressed by the eccentric or eccentrics p3, thereby raising the edge 19X of the said table p. I prefer also to guide the chain d andlattce a between the pulleys or wheels b in grooves r in the side framing of the machine. (See Figs. 1, la, and 4.)

I sometimes pass the lattice-chains ct or d4 around more than one pair of pulleys at the end of the machine, as indicated by the diagram Fig. 5, where the chain a passes around two pulleys bx instead of one pulley b.

It will be understood from the above arrangement that when all the races in the length of cloth that has been stretched upon the bars a have been cut the machine is stopped, and the cut cloth is then wound upon the rollers e', thereby unwinding an uncut length of fabric from the roller c2. 'lhis length is then treated as the preceding length, and so on throughout the piece which is thus cut,as above described,in short lengths and without reciprocating motion, such as was necessary in the machine described in Letters Patent No. 475,620.

The different moving parts of the machine may be driven by any suitable mechanism. In Figs. 1, 1f, and 2 I have illustrated by way of example means suitable for the purpose. Thus motion may be transmitted from the left-hand shaft c to the shaft carrying the adjacent wheels 7.52 by means of wheels 5 on the shaft c, belts or chains 6, and wheels 7 on the shaft carrying the wheels 7a2. In a similar way motion may be imparted to the shaft carrying the frame f from the shaft c by means of a wheel 8 on the said shaft c, belting 9, and a wheel 10 on the shaft carrying the frame f. From this latter shaft motion may be transmitted through a wheel 1l, belting 12, and wheel 13 to the shaft carrying the eccentric o. Thence corresponding rotary motion may be imparted to the shaft carrying the eccentric 0 through the wheel 14, belting 15, and wheel 1G.

I claim as my invention- 1. In machines for cutting the pile of weft pile fabrics in short lengths, of the piece, the combination of an endless lattice upon which a loop of the cloth to be cutis stretched,with means for causing the lattice to travel inter mittently but always in the same direction, and rollers for carrying the cloth not being cut, the said rollers being mounted in a frame within the loop formed by the lattice, substantially as hereinbefore described.

2. In a machine for cutting the pile of weft pile fabrics,the combination of endless chains, and a lattice carrying a loop of the fabric, and chain-wheels therefor, with a tension device carried by the chain, to tighten the loop of fabric, and a rotating frame carrying the remainder of the fabric, substantially as hereinbefore described.

3. The combination of endless vchains and a lattice carrying a loop of the fabric with chain-wheels, a tension device carried by .the chains to tighten the loop of fabric, a rotating frame carrying the remainder of the fabric, and means for taking up or disposing of the slack of the cloth between the tension device and the rotating frame, substantially as hereinbefore described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JOI-IN JAMES MANN.

Witnesses:

A. A. FRENCH, tT II. OLLIvER.

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