US57325A - Improvement in mite ring-machines - Google Patents

Description

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UNITED STATES PATENT OFFICE.

FRANK A. HOWARD, OF BELFAST, MAINE.

IMPROVEMENT lN MITERING-MACHINES.

Specification forming part of Letters Patent No. 57,325, dated August 21 1866.

To all whom 'it may concern:

Be it known that I, FRANK A. HOWARD, of Belfast, Waldo county, State of Maine, have invented a new and Improved Mitering-Machine; and I do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in the art to make and hse the same, reference being had to the accompanying drawings, forming part of this specification, in which- Figure l represents a plan or top view of this invention. Fig. 2 is a longitudinal vertical section of the same. Fig. 3 is a transverse vertical section of the same.

Similar letters of reference indicate like parts.

This invention consists in a mitering-machine which is composed of a transverselysliding head provided with one or more hinged adjustable cutters, in combination with rests which are adjustable in segmental slots in such a manner that for the purpose of mitering edgewise the rests can be adjusted to any desired angle, and for the purpose of mitering tlatwise the knife or knives are brought in the desired inclination, and any required angle can be given to a strip ot wood or molding.

A represents the bed of my machine, which may be made of wood or any other suitable material, This bed is formed in the shape of a semicircle, and it is provided with arradial groove, a, which divides the same in two equal parts, and which forms the guide for the carriage B. To the upper surface ot' this carriage is secured a toothed rack, b, and a segment, c, gears into this rack, as shown particularly in Fig. 3 of the drawings. Said segment is mounted on a shaft, d, and an oscillating motion is imparted to it by a hand-lever, e. By raising the hand-lever c the carriage is moved out,

and by depressing said hand-lever the carriage is made to move iu toward the center of the bed.

From the inner end ot the carriage B rises the head C, which is provided with two side wings, ff', to which the cutters or knives g g are secured. Said wings are connected to the cutter-head'hy means of hinges lz., so that they can bebrought in an upright or in an inclined position, and they are provided with curved arms i, which extend in correspondingly curved slots in the head, and which can be secured in any desired position by a screwclamp, j or, if

requisite, a separate set-screw may be applied to the curved arm of each wing.

rIhe knives themselves are made of blades of sheet-steel, which are fastened to the wings ff' by screwsor rivets, and they may be provided with two or more cuttingedges, each of which can be brought in working position whenever it may besired.

The moldings or strips of wood to be acted on by the cutters or knives g g are placed on the bed A, and they abut against rests D D. These rests are secured t0 the bed, each by two setscrews, k, one of which screws into a nut, l, titted into a dovetailed segmental slot, m. (See Fig. 2.) By releasing said set'screws the rest can be moved to any desired angle with the cutter head, from ninety degrees down to tive degrees or less, and if the rests have been adjusted at the desired angle the edges or ends ofthe moldings or pieces ot' wood can be cut oft' with the greatest ease and facility. 1

For the purpose of mitering moldings or other articles edgewise, the rests and knives are adjusted in the position given to the rest D and knife g in Figs. l and 2 of the drawings, and by adjusting the restthe end or edge of the molding or other article can be cut to any desired angle. For mitering atwise, the rests and knives have to be adjusted in the position given to the rest D and knife g in Figs. l and 2, said rest being secured at an angle of ninety degrees toward the cutter-head, and the knife being brought in the desired inclination by the hinged wing f and screwclamp j.

The power of 'this machine may, of course, be increased to any desired extent by increasing the length of the hand-lever, and pieces of wood of almost any size can be beveled oll to any desired angle with little trouble or loss of time.

What I claim as new, and desire to secure by Letters Patent, is

The reciprocating head C, with its ad j ust-able knives or cutters g g', in combination with adjustable rests D D', constructed and operating substantially as and for the purpose described.

FRANK A. HOWARD.

Witnesses:

B. B. GLIDDEN, ALFRED PATTERSON.

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