Improvement in machines for cutting veneers
US 144938 A
Description (OCR text may contain errors)
W. H. WILLIAMS. Machines for Cutting Veneers.
Patented Nov. 25,1873.
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F if? UNITED STATES WILLIAM H. WiLLI Ms, OF GREEN POINT, (BROOKLYN,)
ASSIGNOR T0 JOHN R. GRAHAM, OF NEW YORK, N. Y.
IMPROVEMENT IN MACHINES FOR CUTTING VENEERS.
Specification forming part of Letters Patent No. 144,938, dated November L5, 1873 application filed September 2, 1872.
To all whom it may concern:
Be it known that 1, WILLIAM H. WILLIAMS,
certain new and useful Improvements in Machines for Cutting Veneers; and I do hereby declare thatthe following is a full, clear, and exact description of the same, reference being had to the accompanying drawing forming part of this specification, and in which- Figure 1 represents a plan of a veneer-cutting machine constructed in accordance with my invention; and Fig. 2, a partly sectional side elevation of the same, the section being taken as indicated by the line or 90.
Similar letters of reference indicate corresponding parts.
My invention has for its object the cutting of veneers "from logs having different peripherical curvatures, the out being made from the Outside of a round, or partly round,
log; and it relates to machines in which a curvilinearly-reciprocating logholder is used.
fices without interfering with the general action. The invention also consists in certain means for varying the inclination of the knife by which the veneer is cut from the log. The invention likewise consists in a certain combination of means for actuatingthe moving parts, or certain of them.
Referring to the accompanying drawing, A represents the frame of a veneer-cutting machine employing a curvilinear] y-reciprocatin g or rocking log-holder, designed to make the out in its down-stroke. B is the log-holder proper, on
which the one-half or portion 0 of a longitudinally-divided log is secured, the flat surface of such log-section resting against the face or fiat surface of the holder. This log-holder B is carried by a frame, D, extending back of the trunnions b b, and virtually composing part of the reciprocating log-carrier, the whole r0cking together on or by the trunnions b b, as a center of motion, but the log-holder B being adjustable by sliding ways 0 c and guides d d within the frame D, to set it and the log farther in or out relatively to the trunnions b b, according to the thickness or size of the log, such construction also giving steadiness and strength to the log-holder without interfering with the working of the parts, and offering every provision for adjustment of the log to the cutter.
This stiffening of the log-holder B at its back length, as it were. Any suitable mechanical devices may be employed for thus adjusting the log-holder B in or out within the frame D.
Said log-holder B, or frameD carrying it, is rocked or reciprocated, to efiect a succession of cuts by the knife f from the outer or curved surface of the log-section O, by means of toothed segments or segmentlevers E E on either side of the machine, arranged to gear with pinions F F upon the trunnions I) b, said toothed segments working upon fulcrums g g, and receiving their motion by pitmen G G from spurwheels H H, driven by pinions I upon a crossshaft, h, which may be fitted with a fast and loose pulley, to put the machine in or out of operation from any suitable main drivingshaft. The pitmen G G are adjustable in a radial di rection within the wheels H H, to increase or diminish the reciprocating stroke of the seg' ments E E, according to the size of the log being worked. The knife-carriage J J, the
one portion, J, of which carries the knife f, and the other portion, J, the gage-plate z, is moved at intervals toward the log, to make a succession of cuts, as required, by means of screws K K, arranged to work through nuts or boxes k, attached to sliding basesL L, on which the front lower portion J of the carriage rests, or to which it is hinged at l, the back ends of said portion J resting and sliding upon inclines M M, that serve to automatically tip the knife f, or varyits tangential position relatively with the outer surface of the log, to adapt its outting-edge to the varying curvature and size of the log each succeeding cut, as heretofore effected by a hand-screw adjustment, which, by the automatic means here provided, is dispensed with and a greater certainty or correctness attained. The inclines M H are pivoted at m, and adjustable up or down by hand from the rear, to give the knife f its proper inclination in starting on a log, by means of a crossshaft, N, bevel-wheels n n 0 0, and screws 19 p. The screws K K are rotated by hand or otherwise to advance the carriage J J at intervals to make a succession of cuts, as required, and to run it back prior to inserting a new log by means of an endless band or belt, 0, and pulleys P P onthe ends of the screws K K. The portion J of the carriage is adjustable, as usual, by screws q q and 0' r, to vary the inclination and forward adjustment of the gage-plate i relatively to the knife f.
WVhat is here claimed, and desired to be secured by Letters Patent, is-
1. The log-holder frame D, constructed of a back bar or brace arranged in rear of the trunnions b b, and radial projections from the trunnions at the ends of the frame, in combination with the log-holder B, with its end Ways or slidesc c,intermediately-arranged sliding guides or stays d d, and the set-screws s s, the whole being arranged for operation substantially as specified.
2. The adjustable inclines M M, in combination with the cross-shaft N, the bevel-wheels n n 0 0 the screws 10 p, and the sliding or reciprocating knife-carriage J J, whereby the angles of both inclines may be simultaneously changed, essentially as and for the purpose herein set forth.
8. The combination of the toothed segments or segment-levers E E, the pitmen G G, the wheels H H, the pinions F F, and the curvilinearly-reciprocating logcarrier B 1), substantially as specified.
FRED. HAYNES, MICHAEL RYAN.
W. H. WILLIAMS.