US340745A - Machine for cutting sheet-staves - Google Patents

Description

(No Model.)

J. A WATERMAN & J. W. CHAPMAN.

MACHINE FOR CUTTING SHEET STAVES.

No. 340,745. Patented Apr. Z7, 1886.

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JASPER A. \VATERMAN AND JAY V. CHAPMAN, OF READING, MICHIGAN.

MACHINE FOR CUTTING SH EET-STAVE S.

SFECIPICATION forming part of Letters Patent No. 340,745,dated April 27, 1886.

Application filed October 15, 1855. Serial No. 179,951. (No model.)

To all whom it may concern.-

Be it known that we, JASPER A. VVATER- MAN and JAY W. CHAPMAN, of Reading, in the county of Hillsdale and State of l\Iichigan, have invented new and useful Improvements in Machines for Cutting Sheet-Staves; and we do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, which form a part of this specification.

This invention relates to certain new and useful improvements in means for cutting continuous barrel-staves with a bilge, and with the crozes and chines formed on such continuous staves.

The invention has for its object the forming of a barrel from one stave of sufiicient width to form the body of the barrel, such body being made of a continuous roll or sheet of wood cut from a log, and having the'proper and uniform bilge given to it in the cutting of the log, and having the crozes and chines formed by the same cutters or knives which cut the stave or roll upon the inner faces thereof.

In formerfi5atents-to wit, No. 182, 499, dated September 19, 1876, and No. 210,171, dated November 19, 187 8-the said Jasper A. Waterman provided means for forming a continuous sheet-stave with a bilge, employing a rigid curved knife or cutter for that purpose. Such knife, however, as the size or circumference of the log decreases with each succeeding revolution, cuts the bilge of constantly and successively varying pitch, so that when the barrels are made up from such sheet they vary in circumference at bilge and chine in the same proportion as the log from which the sheet is cut in successive revolutions. while by the employment of the present invention the barrels when made up are of uniform size.

The invention consists, primarily, in the peculiar construction and operation of a curved cutter or knife adapted to decrease its amount of curvature, as in operation, in cutting the sheet from the periphery of a log, the circumference of the log is diminished; secondarily, in so forming a cutter or knife adapted to cut a continuous stave or bilged sheet from a log that the same knife or cutter will form the necessary crozes and chines on the inner faces of such stave or sheet; thirdly, in

combination with such adjustable curved knife, a pair of guide or pressure rods so arranged as to conform at all times to the varying curvature of the knife or cutter, and carrying upon their outer ends rotating cutters,

which will cut the stave or sheet off at the end of the chine at each end of such continuous stave; and, fourthly, in the peculiar construction of the various parts and their combination, as more fully hereinafter described and claimed.

Figure l is a perspective view of our improvement as adapted to run on vertical slides above a log which is rotated by any of the known or desired means. Fig. 2 is a plan with the top part of the cross-head which carries the pressure-rollers and rotatingcutters removed. Fig.3 is a detached plan view of the top part of the cross-head which carries the pressure-rollers removed. Fig. 4 is a detached plan of that part of the rigid crosshead to which the top part which carries the pressure-rollers is adjustably secured.

In the accompanying drawings, A represents a cross-head adapted to work with a reciprocating motion upon or between vertical guides B. This cross -head is composed of several parts, to wit:

0 is a bottom and rigid curved connection between the two slides D. To each of the inner ends of these slides there are pivot-ally secured the plates E, the inner ends of which are hinged together, and one of them is provided with a slot, 0, which engages with a pin, 1), projecting upward from the slide F, to the rear end of which is pivotally secured the lever G, fulcrumed upon the ear 0, which pro jects from the rigid connection 0, the outer end of this lever being pivotally connected to one end of a pitman, H, while the other end is pivotally connected to one of the guides B.

I is the knife or cutter, made in two pieces, as shown in Figs. 1 and 2, one of such parts being secured to the front of one of the plates E, and the other to the front of the corresponding plate E, and the parts forming the knife hinged together at the center, as shown in the two figures. The cutting-edges of these knives are slightly curved from the center to the end, in order to give the necessary curvature to the sheet or stave from the center to the ends, and near the ends of each of the parts of the knife there is formed a croze-cutter, d, and

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a chine-cutter, e, so formed that the knife in its act of cutting the continuous stave from the r0- tating log will also form the necessary crozes and chines. These parts are so arranged that (as will be seen by reference to Fig. 2) as the log A revolves with each succeeding revolution the circumference of the log is diminished, and through the action of the levers and slide, as described, the curvature of the knife becomes less in the same ratio or proportion as the log diminishes, so that the bilge, when the continuous stave is cut into proper lengths and formed into a barrel, is alike in all the barrels.

Secured to the slides D are the overhanging plates J, to the inner ends of which there is secured a rigid connection, K, curved on its front line, and above this rigid connection the outer ends of the two plates L are pivotally secured to the overhang of the plate J, while the inner ends of these plates L are secured together bya hinge, M, and one or both of the inner ends of these plates L are pivotally secured to a slide, N, which reciprocates between the plates L and the rigid connection K, and this car is pivotally connected with the lever O, fulcrumed at P, with its other end pivotally connected with the pitman Q, the

other end of which is pivotally connected to the frame or one of the slides B, these parts being so arranged that the operation of the plates L is precisely the same as is the operation of those, hereinbefore described, which carry the cutter.

In the lower front face of each of the plates L there is suitably journaled a pressure-roll, R, which are not straight, but the periphery between the two ends is slightly concave, to correspond to the convex surface cut by the knife, and at the outer ends of each of these two pressure-rolls, and upon such rolls, are journaled the rotating cutters S, such cutters being so arranged as to cutoff the sides of the sheet, or, as they may be termed, the ends of the continuous stave at the end of each of the chines. It will be noticed that this portion of the crosshead, carrying the pressure-roll, is compelled to follow the motion of the knife in its different curvatures as it diminishes the circumference of the log.

WVhat we claim as our invention is 1. In a machine for cutting a continuous stave with a bilge from the circumference of a rotating log, a cross-head and suitable supports therefor, combined with a curved knife formed of two equal parts hinged together at their adjoining ends, while their outer ends are pivotally connected to the sides of said cross-head, substantially as and for the purposes described.

2. In a machine for the purposes described, and in combination with a curved cutter made in two parts hinged together, the means, substantially as hereinbefore described, for gradually lessening the curvatures of said knife in the same ratio as the circumference of the log which is being acted upon by said knife diminishes, for the purpose specified.

3. In a machine for the purposes described, and in combination with a curved cutter made in tWoparts hinged together, a pair of concave faced pressure-rolls, adjustable to and from the face of the cutters, and means, substantially as described, for compelling said rolls to ad apt themselves to the varying curvature of the cutter, substantially as set forth.

4. In a machine for stave-cutting purposes,

a cross-head and a cutter carried thereby, having formed integral therewith croze and chine cutters, substantially as specified. 5. In a machine for the purposes described, and in combination with the pressure-rolls and cutters I thereof, rotating cutters journaled upon the outer ends of such rolls, substan-' tially as and for the purpose set forth.

6. In a machine for the purposes described, the combination of the following elements: a cross-head carrying a curved cutter made in two parts, and mechanism for varying the curvatures of such knife, two pressure-rolls with concave surfaces and carrying upon their outer ends rotating cutters, and the mechanism described for compelling the rolls to conform to the varying curvature of the knife, the parts being constructed, arranged, and operating substantially as and for the purpose specified.

JASPER A. WATERMAN. JAY w. CHAPMAN.

\Vitnesses:

H. S. SPRAGUE, E. ScULLY.

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