USRE2803E - Hebvey law - Google Patents

Description

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HERvEYfLAW, or CHATHAM, NEWJERSEY.

Lette-rs Patent No. 15,738, datedSeptember 16,1856 g reissue No. 2,670, dated July 9, 1867; reissue No. 2,803,

d ated November 19, 1867.

MACHINE FOB. CUTTING P APER.-

TO ALL WHOM IT MAY CONCERN:

Be it known that I, HERVEY LAW, of Chatham, in the county of Morris, and State of'New Jersey, have invented a new and useful Improvement in Machines for Cutting Paper; and I-.do hereby' declare that the following is a full, clear, and exact description ofthe same, reference being had to the accompanying drawings, forming part of this specification, in whichl l Figure 1 is a front elevation of a machinefor cutting paper, with my improvement app lied. This view shows the positionvof the parts being operated.

Figure 2 is a similar view, showing the position of the parts after being operated.

Figure 3 is a vertical transverse section thro ugh the line :s :o in iig; 1.

'Similar letters of reference indicate corresponding parts in the several figures.

The .paper-cutting machine to which my improvement is most advantageously applied employs a horizontal reciprocating or sliding knife, rising and falling platform, and moving clamp-frame. l

The nat-urevof my improvement consists in a novel combination of the said platform and clamping-frame by means of toggles or cams, which are arranged and'provided with cranks, the pintles of which work in curved lines, as presently described, whereby the paper or other article to 'be cut is automatically clamped and com= pressed as the platform rises or is being fed upto the knife, and also whereby the paper or other article is auto-A matically-unclamped, after being cut, as the platform descends.

- To enable others skilled in the art to make and use myinvention, I will proceed to describe its construction p and operation.

A represents the frame of the machine; B, the reciprocating knife; l C is the platform upon which the paper is cut. It slides upand downfreely` in ways a of the frame, being moved by eccentric gearing D D', or rack`and pinion. E is the clamping-frame. It slides also in ways b o of the frame A. The upper cross-bar o of the frame serves as the clamp, and stands above the platform C, the paper being inserted between it and the platform, as illustrated in red. F F lare toggles or cams placed between the platform C and the lower crosspiece d of' the clamping-frame. The lower levers F of the toggles` or cams are attached, by fulcra-pins e e, to screw-standards ff', which rest on the lower cross-piece :1 of the clamping-frame, and are made adjustable, te

suit the thickness of the article being out, by nuts ff. The upper levers of the teggles or cams are attached,

by fulcra-pins 7L It, to the platformA C, as represented. The upper and lower levers are provided with teeth n on their eccentric extremity, which gear into cach other in a lmanner to form a. movable joint. Said levers are also connected together by straps z' z', in ord-er that they shall rise together at a. certain stage of the operation; G G' are 'cranks made fast on the fulcra of the' upper levers, and'moving with said levers. Each of these cranks is provided with a horizontal pintle, j, which plays in a curved groove, c, formed in the rear part`of`the frame A, as represented. The pintles ofthe cranks G G', by running in the grooves as the platform rises, cause the toggles or cams to move from the position shown in fig. 1 to the position shownin iig. 2; and, as the platform descends, they canse the toggles lor cams toussnme theposit'ion shown in lig. 1. H is a Worm-whee1 on the shaft of the eccentrics D D', and I is a worm gearing into H. J is a band leading from the worm-shaft to the reciprocating knife-shaft K.

' Operation. l l

The machine being in the condition shown in iig.` 1, a block of paper or other article is placed on the plata form, as shown in red, and motion is communicated to the knife-shaft and transmitted to the mechanism by the band J. As the platform rises, bythe action of the eccentrics D D', theupperlever F' of the toggles creams ls carried up, and made, by the crank, to assume a vertical position,'and, in doing so, exerts an upward pressure on the platform, and a downward action on the lower .lever, which, owing to being connected with thefupper one, is also caused to assume a vertical position, and, in doing so, descends and exerts a downwardpressure on the clamping-frame, which, in connection with the slow movement `of said frame, allows the platform t'o rise 'suiciently to clamp the paper between itself and the upper cross-piece of the clamping-frame, as shown in g.- 2, before it is time for the paper commencing feeding to the knife. As soon as the tog'glcs or cams assume a vertical position, as in' tig. 2 the clamping-frame commences to rise with the platform at the same'speed as it and the paper are fed to the knife. The toggles or cams are caused to exert apressure between the lower crosshar of the clamping-frame and the platform during the feeding and cutting operation, by the pi'ntles of the cranks being confined and moving up in a straight portion of the grooves. The block of paper having been cut through, the lmotion of the ecoentrics is reversed, and the platform run down. The platform and clampingframe descend:4 together at the same speed until they arrive at the position shown in iig. 2, when the platform commences to ldescend morerapidly than the clamping-frame, and consequently the paper becomes unclamped,

as shown in fig. 1.

Instead of having the platform combined with the elamping-frame, and to. rise and fall with it, by a slight modification it may be kept stationary, and the knife-stock combined with the clamping-frame.hgyV similar means, as specitled, and made to rise and fall with like beneficial results. Also the toggles lnay be double `or single, and may stand at right angles with the machine, and he actuated ly a shaft or shafts running acrossthe machine.

What I claim, and desire to secure by Letters Patent, is

rlfhe combination of the rising and falling platform Gand clamp-frame E, operating to clamp the paper or book as the platform rises, and to unelamp the same as the platform descends, by means of single or double cams or tcggles F F, having cranks Gr G connected ivith them, the pintles of which work in curved grooves, or otherwise actuated by any well-known mechanical device, substantially as and for the purpose herein shown and described; f 'i I HERVEY LAW.

Witnesses:

ALEX; F. Roesems, O. MACDANIEL.

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