US444282A

US444282A - Cloth-cutting machine

Info

Publication number: US444282A
Authority: US
Publication date: 1891-01-06
Anticipated expiration: 1908-01-06

Description

(No Model.) l 2 sheens-*sheetA-l. A. WARTH.. CLOTH CUTTING MACHINE.

Patented Jan. 6,1891.

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(No Model.) 2 sheets-sheet 2.

' A. WARTH. GLOTH CUTTING MAGHlNR No. 444,282. Patented Jan. 6, 1891.

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UNITED STATES PATENT OEErcE.

ALBIN WARTH, OF STAPLETON, NEW YORK.

CLOTH-CUTTING NIACHIN E.

SPECIFICATION forming part of Letters Patent No. 444,282, dated January 6, 1891. Application filed J une 19 1890. Serial No. 355,965. (No model.)

To all whom it may concern,.-

Be it known that I, ALBIN WARTH, a citizen of the United States, residing at Stapleton, 1n the county of Richmond and State of New York, have invented new and useful Improvements in Cloth-Cutting Machines, of which the following is a specification.

This invention relates to certain improvements in that class of cloth-cutting machines which I have described in Letters Patent No. 151,456, granted to me on May 26, 1874, and also in Letters Patent No 165,636, granted to me July 13, 1875.

The improvements which form the subjectmatter of my present application for a patent are pointed out in the following specification and claims, and illustrated in the accompanying drawings, in which- Figure 1 represents a longitudinal vertical section in the plane a: Fig. 2. Fig. 2 is a horizontal section in the plane 'y y, Fig. 1. Fig. 3 is a transverse vertical section in the plane z e, Figs. 1 and 2. Fig. 3* is a side View of the brake mechanism detached. Fig. 4 is a side elevation. Fig. 5 is a horizontal section in the plane Qc 0c', Fig. 4, on a larger scale than the previous iigures. Fig. 6 is a transverse section of the pillar which carries the knife in the plane y fg', Fig. 7. Fig. 7is a vertical section in the plane e e', Fig. 6. Figs. 8 and 9 are details, which will be referred to as the description progresses. Fig. 10 is a side elevation illustrating the action of theknife and of the presser-foot. Fig. 11 is a horizontal section in the plane x2 co2, Fig. 10. Fig. 12 is a detached section of the support which carries the knife-receiving socket or receiver. Fig. 13v is a horizontal section in the plane 003 co3, Fig. 12.

In the drawings, the letter A designates the support, from which rises a pillar or standard B, the upper portion of which is round and made to extend through eyes a a, formed on a bracket O, which is secured to the outer end of an arm C. Into the interior 0f the pillar B is fit-ted the knife-bar D, which is provided with two lugs b b', which extend beyond the surface of the pillar, Figs. 1, 6, and 7, and between these lugs is placed the sleeve E, which fits the pillar, so that said pillar, together with the knife-bar, can be easily turned round in the sleeve, while the sleeve can be freely moved up and down on the pillar. By moving the sleeve up and down a reciprocating movement is imparted to the knife-bar D, and the knife is caused to cut through the material situated upon the support A. hen the sleeve B fits snugly between the lugs b b of the knife-bar, the motion of the latter takes place without noise or blows; but as the lugs b b are liable to wear in a short time the sleeve has a dead motion between the same, and it produces disagreeable blows, which are detrimental to the correct action of the machine. For the purpose of reducing the wear of the lugb, a box E is provided, (see Fig. 8,) which is made, by preference, of cast metal and provided with outwardly-projecting iianges e4, by means of which it is secured to a base c', made of steel and extending beyond the body of the box on each end in order to obtain an increased surface to bear upon the sleeve E, Fig. 6.

In order to retain the box E in position, it is rovided with internal ribs e2 e2, which engage recesses bo b", formed in the sides of the lug b. By these means the box is retained in position by the lug itself, and no screw or other device is required for this purpose, and, fur-y thermore, the box is left free to adjust itself upon the sleeve. Since the base e ofthe box E presents an extended surface it is less liable to wear than the limited surface of the lug Z5; but if said base does wear an inlaying plate c3, Fig. 9, of sheet-steel or of any other suitable material, may be placed beneath the lug b (see Fig. 7) to make up for the wear of the base e. The wear of the bearing-surface of the lug b may also be made up by an inlaying plate Z910, of steel or any other suitable material, which is held in place by a pin tu.

The sleeve E receives its motion by means of a bell-crank lever F G, which swings on a pivot c, and one arm F of which engages with the sleeve, while its other arm G is attached to the outer end of the connecting-rod H, the inner end of which is secured to a journalbox h, which embraces an eccentric wrist-pin l, secured to the transverse arbor J. (Best seen in Fig. 2.) The connecting-rod is hollow and provided with an opening h', through which the hollow space can be supplied with ICO a lubricant. The opening 71 can'lie opened or closed by a screw /z or by any other suitable stopper. In the journalbox 71 is formed a small channel ho, through which the lubricant contained in the interior-of the connecting-rod can pass to the eccentric wrist-pin I. By making the connecting-rod ll hollow its weight is diminished and its momentum during the motion of the machine is correspondingly reduced, so that the machine can be run very rapidly without being liable to jump.

On the arm C is secured a cap C0, which swings on pivots c c". vWhen this cap is turned down to the position shown in Figs. l, 2, and 3, it prevents the lubricating material from iying out.

The arbor J receives its motion by a belt running over the pulley J0, which is situated on one side of the arm C, On the opposite side of this arm is situated a brake-pulley K, which is firmly mounted on the arbor J, and which is exposed to the action of a brake-shoe c. This brake-shoe is secured to the end of the arm k', Fig. 3*, of a bell-crank lever 7c 7a2, which has its fulcrum on a pin 7d", secured iu a bracket 7a4, which is firmly attached to the arm C, Figs. l and 2. On the arm k2 of the bell-crank lever 7e 7g? is fitted a weight luf', which produces a yielding pressure upon the brake-slice 7a, and which can be adjusted so as to exert more or less pressure. Itis obvious that a spring may be substituted for the weight 7.15. The object of this brake mechanism is to retard the velocity of the cutting mechanism, as may be desirable.

lJ is the presser-foot, the shankp of which tits into a recess p in the lower portion of the pillar B, Fig. 5, and extends up a little above the lower eye dof the bracket O. Just below this eye the pillar is flattened, as seen in Fig. 5, and to this liattened portion is secured a clamping-platepl by means of screws p3. One of them is a thumb-screw. The face of the shank p is convex, and to the inner face of the clamping-platepissecured an elastic packing pj", so that when the screws p3 are tightened the clam ping-plate bears upon the shank of the presser-foot with an elastic pressure and the screws p3 are not liable to work loose by the jar of the machine when the same is in operation. At the same time thc shank p of the presser-foot terminates in the low'er eye c, so that its weight is reduced and the presserfoot is less liable to work loose than it is if its shank extends clear up to the top of the pillar. It must also be remarked that the thumb-screw p3, which serves to tighten and to release the clamping-plate p2, and which must be actuated very frequently when the machine ispin operation, is situated beneath the lower eye a, where itcan be conveniently reached at alltimes and where itis not liable to bc covered up by the handle which serves to turn the pillar l5. lVhen these screws are released, the presser-foot can be raised, and by tightening said screws the pressenfoot can be adjusted according to the thick-ness of the material to be cut. From the front end of the presser-foot rises aguide-barpf, which engages a groove p5 in the pillar 1-5, Fig. 5, and to the lower end of theguide-bar is firmly secured an arm p6, Figs. l0 and ll, on thc outer end of which is formed an eye p7, in which is secured a set-screw ps. Through this eye passes a pintlep, which supports the presser-toe PD, which is provided with two eyes p" to receive the pintle pf. The presser-toe 1" is subjected to the action of a springp", which has a tendency to force said toc down upon the material to be cut and the tension of which can be increased or decreased by turning the pintle p" and then securing the same in the required position by the set-screw p. A lip p02, which extends from the presser-toe, Fig. l0, forms a stop which prevents said toc from moving down beyond the desired limit. By means of this presser-toe I am enabled to cut materials the thickness 0f which changesas, for instance, a pile formed of several layers of material, the thickness of which is increased by plaits formed in certain portions thereof.

On thc support A is formed the knife-receiving socket or receiver R. This receiver consists of two plates r2 fr?, provided with flanges, the edges of which risc above the surface of the support, so that its edges form the support for the material at the cuttingpoint. In the machines as constructed up to the present time the top edges of thercceiver Rare parallel with the surface of the support A, and during the operation of cutting in a curve or in a sharp anglo the knife' plate is liable to spring laterally, and the cutting-edge being forced against one or the other edge of the receiver is liable to become dull in a short time. This difficulty I have overcome by making the top edges of the rcceivcr R to slope downward from the point fr to the point r', while that portion of said top edges which extends from the point r to the lower portion of the pillar B is parallel with the surface of the support A. By the sloping portion r r of the receiver R the cutting-edge of the knife when strained laterally is gradually brought back into the receiver from the inner end outward, and the cutting-edge of the knife is not liable to become injured or dulled by striking either one or the other edge of the receiver.

\V11at I claim as new, and desire to secure by Letters Patent, is-

l. The combination, with the support A, the pillar 13, the knife-bar D, fitted into the pillar, and the sleeve E, fitting on the pillar, of lugs b L', extending from the knife-bar, one above and the other below the sleeve, and a box E', provided with internal ribs c* c2 to engage recesses 110 U in the sides of the lu'g Z), substantially as described.

2. The combination, with the support A, the pillar l1, the knife-bar D, fitted into said pillar, the sleeve E, which lits the pillar and engages the knife-bar, and the arm C, which IOO IIO

embraces said pillar, of the arbor J, the eccentric wrist-pin I, the journal-box h, embracing this eccentric Wrist-pin and provided with a channel ho, and the hollow connecting-rod I-I, having a supply-opening h and extending from the journal-box h and geared together with the sleeve E, substantially as described.

3. The combination, with the movable support A and with the knife carried by the same, ofthe arbor J, geared together with the knife, the beltpulley J0, and the brake-pulley K, mounted on said arbor,andabrakeshoe held in contact With the brake-pulley by a yielding pressure, substantially as described.

4. The combination, with the-support A, the pillar B, the knifebar D, fitted into the pillar, the sleeve E, ft-ting on the pillar and engaging the knife-bar, the arm C, having eyes a a, which embrace thepillar, and means for imparting to the sleeve a reciprocating motion, of a presser-foot P, the shank of which extends up into the pillar and terminates at the lower eye d of the arm C, a clampingplate p2, secured to the pillar beneath the lower eye by screws p5, and an elastic packingpzo, interposed between the clamping-plate and the shank of the presser-foot, substantially as described.

5. The combination, with the support A, the pillar B, the knife-bar D, tted into the pillar, the sleeve E, fitting on the pillar and engaging the knife-bar, and means, substantially as described, for imparting a reciprocating motion to the sleeve, oi' the pint-le p, the arm p, provided with an eye p7 for snpporting` said pintle, the set-screw p8, the presser-toe P0, made to swing on the pintle, and the spring acting on the presser-toe, Substantially as described.

6. The combination, with the support A, the pillar B, the knife-bar D, fitted into the pillar, the sleeve E, tting on the pillar and engaging the knife-bar, and means, substantially as described,for imparting a reciprocating motion to the sleeve, of the knife-receiving socket or receiver R, formed with sloping edges rising above the support A, substantially as described.

7. The combination, with the support A, the pillar B, the knife-bar D, fitted into the pillar, the sleeve E, fitting on the pillar and engaging the knife-bar, and the arm C, which embraces the pillar, of the arbor J, mounted in said arm, the eccentric Wrist-pin I, the journal-box 71 embracing the wrist-pin, the connecting-rod H, extending from the j ournalbox 7i and geared together with the sleeve E, and the oil-protecting cap C0, hinged to the arm C and swinging in a plane at right angles to the arbor .I substantially as described.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

ALBIN YVARTII. lVitnesses:

WM. C. HAUFF, E. F. KASTENHUBER.