US511146A - Alfred hitchon - Google Patents

Description

(No Model.) 2 Sheets-Sheet 1.

A. HITOHON. METHOD OF SECURING GARD CLOTHING T0 GARDING ENGINE FLATS AND MACHINE THEREFOR.

No. 511,146. Patented 1360.19, 1893.

(No-Model.) 2 Sheets-Sheet 2.

A. HITOHON. METHOD OF SECURING CARD CLOTHING T0 GARDING ENGINE FLATS AND MAGHINE THEREFOR. Y

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UNITED STATES PATENT OFFICE.

ALFRED HITCHON, OF AOCRINGTON, ENGLAND.

METHOD OF SECURINGCARD-CLOIHING T0 CARDlNG-ENGINE FLATS AND MACHINE THEREFOR SPECIFICATION forming part of Letters IPatent No. 511,146, dated December 19, 1893.

odel.) Patented in England March 25, 1892, No. 5,344., December Application filed September 15, 1893. Serial No. 435,595- ,(No in To aZZ whom it may concern:

Be it known that I, ALFRED HITCHON, a subject of Her Majesty the Queen of Great Britain, residing at Accrington, in the county of Lancaster, England, have invented certain new and useful Improvements in Methods of Securing Card-Clothing to Oarding-Engine Flats and Machines Therefor, (for which I have obtained British Letters Patent No. 5,844, of March 25, 1892, No. 22,494, of December 8, 1892, and No. 8,471, of April 27, 1893,) of which the following is a specification.

Under my invention, which has been designed with more particular reference to the securing of card clothing to metal card flats, the clothing is secured to the flat by devices which operate to hold the two together and at the same time to stretch the clothing at the time it is secured and to hold it in that stretched condition. Theclothiug is held to the flat by metallic strips having peg tooth edges, the edges on which the teeth are formed being preliminarily bent to overhang the clothing, and the teeth themselves being bent point down from these overhanging edges with their points inclining outwardly toward the selvages of the clothing. These teeth by downward and outward pressure applied simultaneously, are forced down into the clothing in an outwardly slanting direction,their points turning outward toward the selvages, the effect of this operation being to clinch them in the clothing, and at the same time to stretch the latter toward the side edges of the. bar. strips are then bent under the edges of the bar, the result being that the outer edges of the bar and clothing are clasped or clamped together by strips which at the same time hold the clothing in its stretched condition.

The nature of my inventionand the mannor in which it is or may be carried into effeet will be readily understood by reference to the accompanying drawings, in which- Figure 1 is a perspective view, and Fig. 2 is a cross section of a metal flat made in accordance with my invention. Fig. 3 is a section of the fastening strip in the form into which it is preliminarily bent. Fig. 4 is a like section of the same as it appears when fully Fig. 5 is an inner face elevation of the bent.

The lower edges of the metal fastening I e, 1892, minute, and April 27, 1893,1I0.8,471.

latter. The strip of course is bent to the shape shown in Figs. 4 and 5, only after it has been applied to and clinched upon and into the metal flat and the clothing. It is shown, however, separatefrom the flat and clothing, so that its shape at this turn may be more fully illustrated. Fig.- 6 is a transverse sectional elevation of appliances for exerting the downward and outward pressure by which simultaneously the strips are clinched upon and into the flat and clothing, and the clothing, by and during the clinching operation, is stretched upon the flat. In this figure the parts are shown in the position they occupy at the commencement of the operation. Fig. 7 is a like view of the same appliances in the position they occupy after the operation has been completed. Fig. 8 shows in cross sectional elevation a modification of the expand; ing presser tool by which downward and outward pressure is delivered.

The metal flat is shown at A. Upon its face is the card clothing B, held thereon in stretched condition, by the thin metal strips 0 (preferably steel), which clasp the edges of- .the flat and clothing; the upper bent over edges of the strips are armed with teeth 0, which are driven down into, and outwardly toward the selvages of the clothing, thus stretching the latter crosswise of the flat, and holding it in stretched condition; the under edges of the strips are bent beneath the side edges of the flat, thus clamping the parts tightly in place. The face of the fiat along its edges is beveled slightly as seen at a, thus making the surface of the flat lower along the outer edges than at the central portion; I find that this better insures the holding of the clothing in close connection with the surface of the flat, and avoids overstretching the clothing, thus giving more flexibility to the card teeth or wires. The strips C before they are applied are preliminarily bent at their upper edges to the form shown in Fig. 3, the teeth a being bent down from the overhanging horizontally bent solid portion 0 of the upper edge, and having a slight outward inclination. They are then applied to the clothing B, which is laid upon the face of the flat A, and is of a width less than that of the flat, and then by downward and outward pressare, exerted upon the heads of the teeth, that is to say,upon the inner edge of the part c, the teeth are forced into the clothing downwardly and outwardly, with the result of stretching the clothing, and of being clenched therein, taking ultimately the shape shown in Fig. 4. Thus the clothing is stretched by and during the operation of securing it on the flat. The bending of the lower edges 0 of the strips under and against the under face of the fiat, completes the operation.

Appliances by the aid of which this method of simultaneously stretching and securing'the clothing to the'flat can convenientlybe' practiced, are represented in Figs. 6 and'7.

D is a cross head arranged to slide vertically in suitable guides and actuated tomove 'byanyp'roper means,as for example the eccentric cl. At its lowerend it carries an expanding presser tool consisting of the two aws 6, held to a support f on the iron head by a cross bolt g, and pressure springs g, which tend to press the jaws toward each other. The jaws have their fulcrums at e.

I The jaws and iron head are placed vertically over a bed 72. upon which the metal flat to-be clothed rests in the position indicated in Figs. G and 7. This bed is madeslightly yielding for which purpose it rests upon a spring h interposed between it and the base 1. To the base are fittedon opposite sides thereof upright side blocks k, between which the flat and its clothing are placed, andwhich hold in place the outer vertical edges or sides of the fastening strips. These side blocks fit on ribs 2 on the base, and are. gripped and held together in place by the bolts In'the side blocks are swaging or bending-slides t arranged to move in and out in slanting grooves in the side blocks, and intended to bend the lower edges of the fastening strips inwardly and under the side edges of the flat. The vertically yielding or depress'ible bed h, when. pressed down to the full extent, Tests on shoulders 2' on the base; and when-in this position the flatis just in the rightposition to 'per'mit 'the bending slides to act on the lower edges of the fastening strips, as shown in Fig. 7. The slides l are actuated by lever blocks m fulcrumed at 0 and'bearing at their upper ends against the outer projecting ends of the slides. These lever blocks can be drawn together by any suitable means,'as for example, by bolts 92 which gripthem. By setting up the nuts on these bolts, the lever blocks can be drawn together so as to cause them to force inwardly the slides Z and thus to bend the lower edges of the fastening strips beneath the side edges of the metal flat.

Before commencing the operation of securingthe clothing to the flat, I prefer to interpose between the flat and the clothing a cushion plate 19 as indicated in Fig. 6. This cushion plate remains until after the first pressure has been delivered and the fastening teeth have been partly set or embedded in the 'Figsj6'an'd 7,"I'"can cross them as shown in 'Fig. Sy-where e represents the crossed aws, and e theirfulcrums.

This arrangement causes the jaws to exercise greater stretchlng action on the card clothrnggthanthat represented in Figs; 6 and 7.

- In Fig. 6 the expanding pressure tool is :rep-

resented as having descended a short distance just far enough to drive the-teeth of-the-fastening strips'part way through the cloth-rug.

The clothing itself, it will benoted 'is lessiin width than the face of the flat. to which'it-is beingapplied.

' In'Fig. 7 the parts arerjepresented as in :the position they occupy when the operation is concluded. The clothing it will be-noted 'is stretched the full widthef the flat andmthe teeth which-are clinched in the 'clothing are bent downand outwardly toward theselvage. Thusthe clothing is stretched by andduring the operation of fastening it to the fiat and is securely held to thelatter in :thatstretched condition.

I have described-one mechanisin for securing the parts; but I do not limit myself to that mechanism.

that I claim, anddesire to secure by Letters Patent, is

1. Themethod of securing card clothing to flats, which-consists in applying =and fitting to the selvages of the cloth-ingtoothed clasping or fastening strips,havingtheir-toothed edges preliminarily turned over or abe'ntaso that the teeth shall overhang the clothing, then forcing the teeth into the clothing by simultaneously applied downward and outward pressure'so that the teeth shall beclinchedzin the clothing and extend downwardlyand outwardly toward the selvages ofthe latter,'=and finally securing the clothing in stretchcd condition, and while" clamped 1 upon--the:-fiat, .by bending or turning the lower edges of the strips around the edges and upon the'tback of the Hat, substantiallyas': hereinb'efore ---Se forth.

' 2. The combination substantially: as hereinbefore set forth-oft-he fiatsupporting-bed, the reciprocatory expanding presser tool constructed and arranged substantially as here inbefore described to deliversimultaneously downward and outward pressure upon thefasteniug strips along each edge "of the flatithe side blocks between which'thetooldescends,

and the swagi-ng orbendingslides,for acting upon the lower edges of the fastening strips, scribed and illustrated in the accompanying LO substantially as and for the purpose hereindrawings. before set forth. In testimony whereof I have hereunto set 3. In mechanism for securing card clothing my hand in the presence of two subscribing to metal flats, the combination of the expandwitnesses.

ing presser tool, the yielding bed 71 and the ALFRED HITCHON. removable cushion plate 19, used in connection Witnesses:

with, and for securing, metallic strips and VV'M. B. GRAY,

card clothing to the flats, as hereinbefore de- TOM BULLEYL.

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