US435158A

US435158A - Veneer-cutting machine

Info

Publication number: US435158A
Authority: US
Publication date: 1890-08-26
Anticipated expiration: 1907-08-26

Description

(No Model.) 2 SheetsSheet 1.

E. P. SMITH 82; T. A. FREDERIOKS.

VENEER CUTTING MACHINE.

N0. 435,152 3 0 Patented Aug. 26, 1890-.

x I l INVENTORSZ 2 Sheets-Sheet 2.

E. 1?. SMITH 8v T. A. FREDERIOKS. VENEER CUTTING MACHINE.

No. 435,158. Patented A '(NoModeL) W unuunu w WITNESSES: I. mv mun M WM @KMW wg fiw ATTUHNEYS UNITED STATES PATENT OFFICE.

EDXVIN F. SMITH AND THOMAS A. FREDERIOKS, OF SYRACUSE, NEW YORK.

VENEER-CUTTING MACHINE.

SPECIFICATION forming part of Letters Patent N o. 435,158, dated August 26, 1890. Application filed November 15, 1889- Sorial No. 330,490- (No model.)

county of Onondaga, in the State of New York,

have invented new and useful Improvements 1n Veneer-Outting Machin es, of which the following, taken in connection with the accompanying drawings, is a full, clear, and exact description.

This invention relates to the class of ven eercutting machines in which a reciprocating knife moves across the end of the bed, on which is held the block of wood from which the veneers are to be cut.

The object of this invention is to facilitate the delivery of the veneers from the machine and to counteract the pressure exerted upon the grain of the wood by the knife in passing through the wood; and to that end our invention consists, essentially, in the combina tion, with the knife, of a roller ext-ending lengthwise of said knife at the rear thereof and geared to rotate simultaneously with the movement of the knife, as hereinafter more fully described, and specifically set forth in the claims.

In the annexed drawings, Figure 1 is an elevation of that side of the knife-carrying frame which faces the block-holder, the latter being omitted. Fig. 2 is an elevation of the opposite side of the aforesaid frame and main supporting-frame of the machine. Fig. 3 is a vertical transverse section on line 00 00, Fig. 2. Fig. 4: is an enlarged side View of the main driving-pinion, which imparts motion to the veneer-delivering roller, the side plate of said pinion being removed to illustrate the clutch mechanism; and Fig. 5 is a transverse section on line y 3 Fig.

Similar letters of reference sponding parts.

The machine shown in this application is of the same character as that illustrated in the application of Edwin F. Smith for Letters Patent for improvements in veneer-cutting machines, Serial No. 319,133, filed July 29, 1889, and consists of a base A, on one side of which is erected a frame A extending the entire length of said side. This upright frame A has secured to it lengthwise two horizontal guides a a, on which slides a stout iron frame B, to the side of which is secured the indicate correknife Z7, disposed diagonally lengthwise 011 said frame and with the cutting-edge downward, said knife-carrying frame receiving re-' ciprocating motion from a crank attached to the driving-shaft and connected with the frame 13 by a pitman.

The bed or holder of the wooden block from which the veneers are to be cut is mounted on guides e e, disposed at right angles to the side of the frame A and in a plane at an. acute angle to the cutting-edge of the knife, and thus support the wooden block in such a position asto cause the knife to pass obliquely through the block during the reciprocating motion of the knifeframe in front of the block-holder.

Back of the cutting-edge of the knife I) is a roller 01, extending lengthwise of the knife and parallel therewith, with a distance between them equal to the thickness of the veneers to be cut from the block. Said roller pressing against the wooden block along the line of the cutting-edge serves to sustain the wood so as to prevent its splitting. This roller has hitherto been rotatcd solely by its frictional contact with the wooden block during the movement of the knife, and inasmuch as the wooden block is held at an. acute angle to the axis of the roller the latter is subjected to a diagonal drag across its face, and consequently the rotation of the roller is to some degree retarded and the roller is caused to exert a downward pressure on the side of the wooden block. To obviate these defects and at the same time promote the delivery of the veneers from the machine, we employ suitable gears between the stationary or main supporting-frame A and roller d, for the purpose of transmitting to the roller a positive motion simultaneously with the movement of the knife. Said gearing we prefer to arrange as follows: To one end of the roller (Z we rigidly attach a miter or bevel pinion f, and in the knife-carrying frame 13 we journal a shaft g, which extends through said frame and has secured to one end a bevel-pinion i, which meshes with the pinion fof the aforesaid roller, and to the opposite end of the shaft g is secured a plain pinion Z, which meshes with a rack 0, secured to the side of the frame A ,and thus the shaft 9 receives rotary motion during the reciprocating motion of the knife-carrying frame B, and this rotary motion is transmitted to the roller d by the pinions f and f.

Inasmuch as the rotation of the roller is only required during the operation of cutting the veneer from the block, we allow the shaft 9 to remain dormant during the retrograde movement of the knife-carrying frame B by employing a suitable clutch adapted to lock and unlock the said shaft to and from the pinion Z. One form of such a clutch is illustrated in Figs. 4 and 5 of the drawings, and consists in forming the hub or body Z of the pinion Z separate from the peripheral portion thereof and fitting the said parts to each other by an annular joint, which is concentric with the axis of the pinion and allows the peripheral portion to revolve on the body or hub. The peripheral face of thelatter is provided with eccentric cam-grooves t t 25, in which are placed rollers r rr, of such diameters that when they lie in the deepest portions of the grooves they are without binding contact with the aforesaid two parts of the pinion, and when carried into the shallow portions of the grooves the rollers become wedged between the two parts of the pinion. Hence the rotation of the peripheral portion of the pinionl in one direction leaves the hub Z and shaft g dormant, and the rotation of the aforesaid part of the pinion in the opposite direction ties the two parts of the pinion together in such a manner as to transmit motion to the shaft g. The rollers r r r are retained in the pinion by plates 71 11, secured to opposite sides of the pinion, as shown in Fig. 5 of the drawings.

Having described our invention, what we claim as new, and desire to secure by Letters Patent, is

1. In combination with the reciprocating frame carrying the knife and roller extended lengthwise of the knife at the rear thereof, mechanism actuated by the reciprocation of the said frame and imparting rotary motion to the roller, as and for the purpose set forth.

2. In a veneer-cutting machine, the combination, with the main supporting-frame and the knife-carryin g frame reciprocatin g on said supporting-frame, of aroller extending lengthwise of the knife at the rear thereof, apinion on said roller, a rack on the main supportingframe, a shaft journaled on the knife-carrying frame, a pinion on one end of said shaft engaging the aforesaid rack, and a pinion on the opposite'end of said shaft meshing with the aforesaid pinion of the roller, substan tially as described and shown.

3. In a veneer-cutting machine, the combination, with the main supporting-frame, and the knife-carrying frame reciprocating on said supporting-frame, of a roller extendinglengthwise of the knife at the rear thereof, a pinion on said roller, a rack on the main supportingframe, a shaft journaled on the knife-carrying frame, a pinion on one end of said shaft meshing with the pinion on the aforesaid roller, a pinion on the opposite end of said shaft and meshing with the aforesaid rack, and a clutch adapted to lock and unlock the latter pinion to and from its shaft, substantially as set forth.

In testimony whereof we have hereunto signed our names this 1st day of November, 1889.

EDWIN l3. SMITH. L. S. THOMAS A. FREDERIOKS. [L 8.] Witnesses:

O. L. BENDIXON, MARK W. DEWEY.