US681811A - Machine for cutting leather, &c. - Google Patents

Description

No. fi8l,8ll. Patented Sept. -3, 190i.

H. PARSONS. MACHINE FOR CUTTING LEATHER, 81.0.

(Application filed Sept. 5, 1899.)

(No Model m: ycnms PCTERS co. Pwcruumm WASHINGTON, a c

UNITED STATES PATENT OFFICE.

HENRY PARSONS, OF MARLBORO, MASSACHUSETTS.

MACHINE FOR CUTTING LEATHER, 800.

SPECIFICATION forming part of Letters Patent N 0. 681,811, dated September 3, 1901.

Application filed September 5, 1899. Serial No. 729,412. (No model.)

To all whom it may concern.-

Be it known that I, HENRY PARSONS, of Marlboro, in the county of Middlesex and State of Massachusetts, have invented certain new and useful Improvements in Machines for Cutting Leather and other Materials, of which the following is a specification.

My present invention is an improvement upon myinventions patented August 9, 1887, No. 368,108, and August 8, 1899, No. 630,402. These relate to what are denominated beam die-presses, wherein a vertically-reciprocating beam is employed to force downward cutting-dies placed beneath upon the material to be cut, which material rests upon an adjustable bed. As my present device is confined to the parts shown in the drawings, it-

is not deemed necessary to describe further the original machine, which is well known and has for many years been in extensive use.

In my Patent No. 630,402 I employ a swinging arm supported by a movable carrier, suitably s'ecured to the beam of the machine, the free end of the said arm having a spindle through which power from the beam is communicated to the die by the means set forth. In my present device I dispense entirely with the swinging arm and by a novel arrangement of parts enable the operator to move the spindle both lengthwise and crosswise of the beam with great facility without in any manner detracting from the vertical movement of the spindle to and from the bed in attaching and detaching the die to the holder on the lower end of the spindle or preventing the setting of the die correctly upon the surface of the article to be died out. The movement of the spindle-carriers in the present invention is so limited that the spindle is always directly under the beam, and the full power of the beam may be exerted directly on the die in all positions. The carriers are essentially frames open at their centers, and the die-spindle is supported on the carriers, as will be explained.

In the drawings like letters indicate corresponding parts.

Figure 1 is an elevation of the device, the beam being represented in cross section. Fig. 2 is a side elevation of the device, the beam being shown in part on the side.

E is the vertically-movable beam of the machine. On each side, running lengthwise, is preferably formed a projection or ledge e e. This ledge forms a suitable support for the carrier 0,, which is essentially a rectangular frame, open at the center, and said carrier is held in position by the rolls a a which rolls are connected to the carrier substantially as described in my Patent No. 630,402. The carrier a is readily moved lengthwise of the beam. The carrier a, is essentially a rectangular frame, open at its center, and is formed in its lower portion with a ledge e e on each side in cross-section of the main carrier. Suspended beneath is the supplemental carrier at, held in position and sustained by the rolls 0 0, running upon the ledge e 6 and the whole of the supplemental carrier and its dependencies readily movable widthwise of the beam. The carrier a is preferably formed with the arm extending downward, as shown, for the holding of the vertical spindle B, the said spindle being journaled in the carrier a at two points, as shown,

and held in place by the spring I) and the collar b. The spring and collar also furnish ready means of adjusting the height of the spindle from thebed D or the top of the material on the bed'to be out.

At the bottom of the spindle B is suitably and preferably movably secured a holder, and suitable means is provided for securing the said holder O to the die G, and while this may be done by mechanical means I much prefer to arrange for temporarily magnetizing the holder, as by this means the die can be more quickly seized and when necessary to change the die can quickly be detached and another secured. This I accomplish by placing a wire a: suitably around the holder or some part of it and employing electricity derived from any convenient source. For the smaller dies a permanently-magnetized holder could be used, though I do not deem it nearly as serviceable as the electrical method described.

It will be observed that one of the principal points of my present invention is the vertical and vertically-movable spindle combined with means for supporting said spindle while permitting movement both lengthwise and crosswise of the beam, thus enabling the spindle to readilyseize and convey a die from any position beneath the beam to any other position beneath the beam for setting it upon the material to be out and dieing it out. It will be understood that it is not the intention to have the top of the spindle quite touch the under side of the beam when held in its normal position. Suitable provision is made so that the upper part of the spindle can pass through the under side of carrier at and be freely moved back and forth across under the beam, as described. When in operation, the beam descends with the carriers a and a, the latter moving down the spindle as the die pressesuponthe material to be cut nntilthe beam strikes the top of the spindle and the beam forceis communicated directly to the spindle and thence to the holder and the .die

secured thereto. v v

1 do not wish to confine myself to the exact detailsv of construction herein shown and described, as the details may be modified without departing from the spirit of my invention.

Instead of the rolls for supporting thecarriers it would be possible to use a groove or grooves with a suitable hanger; but the device would not operate so readily and efficiently.

Having described my invention, what I claim, anddesire to secure by Letters Patent of the United States, is

'1. In-a beam die-press, the'combination of a vertically-reciprocatin g beam provided with ledges on its lower edge, a centrally-open carrier supported on said ledges and movable lengthwise of the beam, said carrier having ledges at its lower edges and extending transversely with reference to the beam, a second centrally-open carrier supported on the ledges of the first carrier and movable thereon, and a yieldingly-held die-spindle supported from the second carrier and extending through the carrier-openings, to be depressed by direct contact of the beam, substantially as described.

2. Ina beam die-press, the combination of a vertically-reciprocating beam, a longitudinally-movable carrier supported below said beam a transversely-movable carrier also below said beam on the first carrier, and a spindle supported by the second carrier and movable to all positions beneath the beam, substantially as described.

3. In abeam die-press, the combination of the vertically-reoiprocating beam, a carrier supported by the beam and movable lengthwise thereof, a second carrier'supported by the first and movable in right line crosswise thereof, a die-spindle journaled in an arm extending downward from and forming part of the secondcarrier, and a spring bearing on said spindle to project it.

In testimony whereof I have affixed my signature in presence of two witnesses.

HENRY PARSONS.

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