US242916A

US242916A - furnival

Info

Publication number: US242916A
Authority: US
Publication date: 1881-06-14
Anticipated expiration: 1898-06-14

Description

2 Sheets-Sheet 1.

(No Model.)

B. FURNIVAL Paper G'utting Machine. No. 242,916.

Patented June 14,1881.

(No Model.) 2 Sheets-:Sheqt 2.

R. PURNIVAL. Paper Cutting Machine. No. 242,916. I Patented June14, 1881.

n. rzrzns mm-m n har. Washington. at;

UNITED STATES PATENT ()FFIGE.

RICHARD FURNIVAL, OF MANCHESTER, COUNTY OF LANCASTER, ENGLAND.

PAPER-CUTTING MACHINE.

SPECIFICATION forming part of Letters Patent No. 242,916, dated June 14, 1881.

Application filed January 12, 1881. (No model.) Patented in Great Britain May 28, 1879.

To all whom tt may concern:

Be it known that I, Brennan FURNIVAL, a subject of the Queen of Great Britain and Ireland, and residing at Manchester, county of Lancaster, England, have invented certain Improvements in Paper-Cutting Machines, (for which I have obtained a patent in Great Brit-i ain, No. 2,123, May 28, 1879,) of which the following is a specification.

My invention relates more particularly to the means for clamping the paper or material to be cut previous to the operation of-the cutting-blade. I employ a clamping-bar which is arranged to be brought down upon the paper so as to indicate the line of cut to the operator, and is loaded to firmly hold the paper or material by the action of parts of the machine.

In the accompanying drawings, Figure 1 is a side elevation of a guillotine or paper-cuttin g machine of the description now well known as Fnrnivals, parts of the machine not necessary to the illustration of my present invention not beingincluded in the drawings. Fig. 2 is a back elevation of the parts included in Fig. l; and Fig. 3, Sheet 2, a detached seetional view of the operative parts of my improvement drawn to an enlarged scale.

In the drawings, a is the framing of the machine, which may be of any ordinary or suitable form. I) is the ordinary knife, and c is the clamping-bar.

The ends of theclamping-bar project through slots d, which are formed in the framing, and which guide the bar in its upward and downward movements.

To each end of the bar is jointed a link, 0, and the lower ends-of the two links are connected by means of links f, Fig. 3, with the innerendsof two levers, gg, which are mounted on two fulcra, h h, fixed to the sides of the framing. The outer and longer arms of these levers are connected together by means of a bar, g, which acts as a counterpoise to the clamping-bar, and is sufficien tly heavy to raise the same. The longer arms of the levers g g are connected by links 2 t with a treadle, 70. When this treadle is depressed by the action of the foot of theroperator the weight g is raised, whereby the clamping-bar is lowered.

A lever-frame, l, is'mounted upon fulcra attached to the sides of theframing. In the example, for convenience, the outer ends of the studs h carry the frame I, and the inner ends of the same studs carry the lever 9, Fig. 2.

The said lever'frame consists of two levers, I, which are connected together by means of a bar, 1, and of a cross-bar, 1 In theexample the lever l and the bar I are supposed to be cast or formed in one piece, and the bar 1 to be bolted to the side levers, l. Studs at m on each lever l-enter slots in the side links, 6. The bar I is connected by means of a slotted link, a, with a crank, 0, which is fixed or formed on the main shaft, which actuates the knife. The upper end of the link is jointed to a crank-pin, p, which is fitted to a bearing formed in the crank. A stud, q, is fitted to swivel in the crossbar Z and the head of this stud is formed with ajaw, in which the link a slides. A pin fixed in the said stud passes through the slot in the link a. The arrangement permits the movement of the lever-frame upon an axis at right angles to the axis of rotation of the crank. As the crank-shaft revolves, thelever-frame is raised and lbwered, the frame moving partly around the fulcra h h. When the lever-frame is raised the clamping-bar is permitted to rise.

The action of the parts is substantially as follows When the parts are at rest the knife and clamping-bar are raised to about the-highest position, so that the papers or materials to be cut can be placed in position. When adjusting the papers the clamping-bar can be readily lowered so as to bear lightly upon the papers by pressing upon the treadle with the foot, the slots in the side links, 6, permitting the downward movement of the clamping-bar. The papers can then be readily so adjusted as that the front edge of the clamping-bar about coincides with the line of out. Then the adjustment is completed the machine is started, and the lever-frame is allowed to descend by the rotation of the crank. When the studs m bear upon the ends of the slots in the links e the weight of the frame is sustained by the clamping bar, which, as a consequence, is pressed downward upon the papers.

The lever-frame may be made so heavy as that the pressure due to its weight and leverage shall furnish sufficient pressure, or a weight or weights may be applied to the frame, as indicated by the dotted lines.

The slot in the link a permits the downward movement of the link after the movement of the lever-frame has been arrested by reason of the clamping-bar bearing upon the interposed papers at an earlier or later period in the stroke of the crank, according as the collective thickness of the paper to be cut-may vary. The continued rotation of the crank effects the cutting of the paper, and on the return of the knife the lever-frame is raised, and the-clamping-bar rising at the same time the cut paper may be removed or readjusted for another cut.

To prevent undue shocks a buffing-pad, r, of india-rubber or other suitable material, is applied to the top of the link a, and held by means of bolts 8 between disks t.

The arrangements for raising and lowering the lever-frame, or of any suitable load which may be substituted therefor, may be variedas, for example, I may connect the said leverframe or load by means of links, or in any suitable manner, with the knife, so that when the knife rises the load is raised, and when the knife descends the load is lowered.

I prefer to employ a treadle to draw down the clamping-bar, because both hands are then free to be used in adjusting the work; but I do not confine myself to this, as, if preferred, the clampin g-bar may be arranged to be drawn or pushed down by the hand or by means of a hand-lever.

I claim as my invention frame controlled by the operative mechanism,

substantially as described, to load the clamping-bar, in combination with the clamping-bar adapted to be raised and lowered independently of the said Weighted frame, as and for the purpose set forth.

2. In a paper-cutting machine, the combination ofthc ciamping-bar and weighted frame controlled by the operative mechanism, substantially as described, to load the said bar, with a lever or treadle connected to the bar to raise and lower it, so that the paper may be adj nsted thereunder, as set forth.

3. The combination of the clamping-bar and links 0 c with operating-treadle k, weighted levers g g, and connecting-rods.

4. The combination of the clamping -bar, slotted links 0 c, and controllingtreadle with the weighted frame 1 and crank 0, connected to and operating said frame, all substantiallyas specified.

5. The combination of the clamping-bar, slotted links 6, weighted levers g, and controlling-treadle with lever-frame l, slotted link n,

and crank 0, substantially as and-for the pnr- 6o pose described.

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

RICHARD FURNIVAL. Witnesses:

EDW'ARD T. WHITELOW, W. SEXsMrrH BOARDMAN.