US413722A - Carving-machine - Google Patents

Description

j UNITED l kvSTATES PATENT (DEEIcE.

HORACE HOLMES, OEDETROIT, MICHIGAN. y

CARVING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 413,722, datedV October 29, 1889.

Application led une 15, 1889. Serial No. 314,370. (No model.) d I To @ZZ whom it may concern.-

Be it known that I, HORACE HOLMES, a citizen of the United States, residing at Detroit,

county of Wayne, State of Michigan, have Aro invented a certain new and useful Improvement in Carving-Machines; and I declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make an'd use the same, reference being had to the accompanying drawings,which form a-part of 'this specification.

In the drawings, Figure l is a plan view, and Fig. 2 is a side elevation, Of a machine embodying my invention. y

Itis the purpose of my invention to produce a machine with a rotary cutter,in which the cutter is adapted to be operated at any point on an irregular surface, thevconstruction being such that the tool may be brought opposite the top, bottom, or any side of the obj ect, and may be fed to its Work longitudinally of the tool in every possible direction,

and may be shifted laterally in any direction C is a shaft journaled in the carriage B.

At its ends are fittings C', fixed to the shaft and having upright pivot-journals c.

D represents arms with yokes d at one end, which engage the pivot-journals c.

F is a shaft journaled in bearings F', and these latter bearings have upright pivot-journals jwhich engage'yokes d on the arms D. Gn the shaft F is fixed a tool-holder G, whichv also supports an electric mot-or H, the latter being suitably engaged with the tool G'. In the drawings the tool is in continuation of the armature-shaft of the motor.

F2 is a spring on the shaft engaged at one end with the shaft and at the other with the .i tting F. YIt is designed to balance, as near as may be, the Weight of the tool and other apparatus mounted on the shaft.

J is a guide-holder for the guide-point J', designed for use when the machine is employed for making duplicates of a carving.

The tool G' and the guide-point J' are both adjusted upon pivot-shafts g, and upon these shafts are fixed the gears K. K is a rack-bar engaged With said gears, so that motion given to either gear Will be communicated to the other.

L is a Weight designed to counterpoise the said apparatus.

The operation of the device will now be understood.

The carving or design to be reproduced,

which I term the model, is placed beneath the guide -point J', While the' block to be carved is placed below the tool G'. Both are fixed to a suitable carriage or support, so that any movement of the model Withrespect to the guide-point Will cause an exactly similar movement of the block with respect to the tool. Now, as the arms have a free movement up or down about the axis F and a free movement laterally about the pivot-journals c', and as the tool and point holders G and J have a free movement up and down about the axis of the shaft F, While the guide-point J' and tool G' may move about their pivotshafts g, it is apparent that said point and tool may be operated in every possible direction, and as the point J may thus bebrought to bear directly upon every part of the model, so the tool Will work down to a corresponding point in the block that is being carved.

It is apparent that the tool may be handled directly in making 'original Work, in Which case the point J Would not be required, as 11o model would be employed.

I would have it understood that any convenient means may be employed for holding the block and the model and causing them to feed so that any movement of one will be accompanied by a simultaneous and exactly similar movement of the other. Such mechanism is not shown, as it constitutes no essential part Of my present invention.

What I claim is A 1. A carving-machine consisting, essentially,

IOO

of a carriage, a guide bed or ways along which it is designed to traverse, a horizontal shaft mounted transversely across said carriage, with arms pivotally engaged therewith and adapted to swing horizontally, a horizontal shaft journaled through pivoted bearings at the outer ends of said arms, a tool-support engaged with said latter shaft adapted to move up and down about the axis of the shaft, a tool engaged with a pivot in said support at right angles with the said shaft', and an electric motor engaged with and adapted to rotate the tool, substantially as and for the purposes described.

2. The combination, With the tool and the mechanism whereby it is engaged with the ing apparatus, of a counterpoise -weight L and spring F2, substantially as described.

In testimony whereof I sign this specification in the presence of two Witnesses. l

HORACE HOLMES.

Witnesses:

WELLS W. LEGGETT, L. A. DoEL'rY.

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