US761361A - Miter-cutting machine. - Google Patents

Description

No. 761,361 I PATENTED MAY31,1904. c. w; DAKE. I

- MITBR CUTTING MACHINE.

APPLICATION FILED AUG. 29, 1903.

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- MITER CUTTING MACHINE.

APPLICATION FILED AUG 29 1903 3 SHEETS-SHEET 2.

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No. 761,361. I

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No. 7611361. r v PATENTBD MAY 31, 19 04 ;c.-w. BAKE.

- MITER CUTTING ,MAGHINR; 7

APPLICATION rnnn me. 29. mos.

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iiyifik v UNITED STATES Patented May 31, 1904.

' PATE T OFFICE.

CHARLES W. DAKE, OF GRAND RAPIDS, MICHIGAN, ASSIGNOR TO THE .ADVANCE MACHINERY COMPANY, OF TOLEDO, OHIO.

IYVIITER-C-UTTING MACHINE.

SPECIFICATION forming part of Letters Patent No. "761,36 1, dated May 31 1904. r

Application filed August 29, 1903. Serial No. 171,252. (No model.) I

To' all whom/it may concern:

, Be it known that I, CHARLEs W. DAKE, a

citizen of the UnitedStates, residing at Grand Rapids, in the county of Kent and State of Michigan, have invented new and useful Improvements in Miter-Cutting Machines, of

which the following is a specification.

This invention relates to certain new and useful improvements in miter-cutting machines; and the invention relates to that class of miter-cutting machines provided with a horizontally-moving knife operated by means of a lever or other suitable means and used in cutting wood or'similar material at any required angle." The lnvention conslsts 1n the combination and arrangement of parts hereinafter particularly described and claimed.

' he objects of the invention are, first, to-

construct a miter-cutting machine whereby two miters may be cut on the same machine; second, to furnish a machine having an adjustable bed pivotally supported beneath the knife, whereby the bed may be tilted at any required angle for cutting the stock; third, to form a solid bearing for the adjustable bed,

whereby the same may be retained in the required position to receive the downward pressure caused by the horizontally-moving knife;

shows a sectional view on the line X X of Fig.

1 and on the line XX of Fig. 4:. Fig. 3 shows a sectionaljview on the same line, but with the bed raised to an angle of forty-five degrees.

Fig. 4 shows a plan view with one of the guideblocks placed at an angle offorty-five degrees to the travel of the knifeand the other guideblock placed at right angles to the travel of the knife.

' one operation.

Similar letters refer to similar parts throughout the severalviews.

A is a base frame or support.

B is the adjustable table provided with a curved bearing 6, extending the entire length of the table and having its support in the curved groove The pivotal or turning point of the table is directly beneath the cutting edge of the knife at whatever angle the table may be tilted. By this construction the side of the table receiving the downward pressure from the knife is held securely and firmly in place.

C C are the upperside frames for supporting the moving parts. These frames are rigid with the frame A.

D is the head for carrying the knives. The

head D is provided with a projection P, which engages with a groove p in the base-frameA,

as shown in Figs. 2 and 3.

E E are the knives, constructed in the ordinary. manner.

F is a lever or handle provided with a segmental gear, which gear' engages with the rack H of the head D, and by operating the lever F, which turns upon the point or pivot G, the segmental gear is partially revolved, giving the reciprocating motion to the head and knives through the rack H.

I is a guide-block which works in the slot K and is held in position by means of a thumbscrew I, whereby the blocks are shifted so as to present the stock lying on the table at any required angle to the travel of the knives.

J is a thumb-screw for holding thetableB at any required angle or position of the knife, the thumb-screw extending through the slot L and adjusting the table to the required angle, the slot L being in the frame C. By this construction I am enabled to cut a longer bevel than otherwise could be done, and at the same time I am enabled to out two bevels at This is done by adjusting the table B and also adjusting the guide-block I when the table makes one bevel and the guideblock gives the direction for cutting the other bevel.

The bearing for the table by means of the circular portion 6 and the curved slot a enables me to adjust that portion of the table which extends toward the knife at a point directly under the knife and to support the same there in a firm position, so that the pressure of the knife when operating upon the stock cannot in any way displace the table, said table acting as a gage. In the drawings I have shown two knives and two guideblocks resting upon the table, which is my preferred form. It will be noticed, however, that a miter-cutting machine can be made using but one knife, in which case it would cut in one direction.

Having thus described my invention, what I claim to have invented, and desire to secure by Letters Patent, is

1. In combination with the main frame A, provided with a curved groove a extending the length of the frame, a table B, provided with a curved bearing engaging with the said groove, the pivotal point of the table being bearing engaging with the said groove, the

longitudinally-moving knife moving in proxmity to the said table, suitable means for adjusting the said table B to any required angle,

and adjustable guides supported on said table, substantially as described.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

. CHARLES W. DAKE.

Witnesses:

EDWARD TAGGART, MARY S. TOOKER.

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