USRE1400E - Improvement in machinery for shaping irregular surfaces in wood - Google Patents

Description

"'I'HALE GOODMAN.

Gage-Lathe.

Reissued Feb. l0, 1863.

No. L400.- l

UNITED STATESv 4PATENT OFFICE. i

z WARREN HALE, ALLEN-GOODMAN, LORENZO HALE, AND JOHN GOOD- MAN, OF NORTH DANA, MASSACHUSETTS, ASSGNEES OF SAlD WARREN HALE AND ALLEN GOODMAN.

IMPROVEMENT IN MACHINERY FOR SHARING IRREGULAR SURFACES IN WOOD.

, Specification forming part of Letters Patent No. 4,120, dated July 22, 18.45 extended seven years;

, l Reissue N0. l ,400, dated Februry 10, 1863.

To all whom, it may concern.'

Be it known that WARREN HALE and AL- LEN GOODMAN, of Dana, in the county of Worcester and State of Massachusetts, did

tion of the same, reference being had to the accompanying drawings, making a part of this specification, in Which- Figure l is a side elevation of the invention; Fig. 2, a longitudinal vertical section of the same, and Fig. 3 a transverse vertical sec- -tion of the same.

Similar letters of reference indicate corresponding parts in the several gures.

This invention pertains to that class of machinery which has for its object the reducing of plain or rough blocks of Wood to any desired irregular form, but difers, it is believed,

Vboth in its operation and results from those which have heretofore been contrived.

The machines which are now in use for the turning of lasts, gun-stocks, 85o., produce their effects by the revolution of a pattern, which guides and thereby causes the cuttingtool to reduce the rough block to a similar form to the pattern, andthe articles formed are irregular in all directions and are left in a rough state when delivered from the machine. ln the Within-described machine the model or pattern also governs the shape to be given to the rough block, but does not revolve; and While the articles produced by the same-such as polygonal piano-legs, 85e which heretofore have been made by hand mostly, if not ezt` clusively-are irregularly or eccentrically Kshaped longitudinally, and their external rails and holding the rough block iirmly in the center, and having also a perfect pattern on each side of the carriage; and, secondly, arevolving planingcylinder similar to those in common use, arranged in a vertical sliding frame, the motions of said frame being controlledor guided bythepatterns above named, as Will be shown in the sequel.

A represents the framework, which may be made of Wood or iron, put 'together in any proper way so as to properly supportthe Working parts. B is the driving-drum, from Whicn bands pass to and. around each end of ,theA

planing-cylinder, to give it its requisite revolutions. a a a is the horizontal carriage, which is a rectangular frame strongly put together andmovin g forward and back on suitable rails, b b, fixed on the top'of the frame-Work A. Proper provisions are made for holding the rough block of Wood c in the center of this carriage. by means of the common lathe-chuck, c, and the screw-holder d. I

On each side of the carriage a ory a, as heref inbefore suggested, a pattern, e e e c, is iirmly fixed, the tops of which are finished smoothly and have longitudinally the irregularities or shape that it is desired to give the surfaces of the rough block a in their longitudinal profile, and on which surfaces the planing-cylinder operates. The horizontal carriage a a a is moved forward and back by means of a rack, ff, and pinion g, Fig. 2, engaging with it.

The shaft h, on which the pinion g is fixed, is revolved by hand-power applied to a crank- Wheel,t',on the same shaft with the cogged pinion k, (shown by dotted red lines in Fig. 1,) which pinion k Works with the geared Wheel Z on the end of said shaft h.

The planing-cylinder m, Figs. 2 and 3, is

constructed in the ordinary Way with longitudinal knives attached to a cylinder, or to eircular heads, but must be of small diameter, in order to make the abrupt turns necessary in giving shape to such articles as are to be Wrought upon by the machine. The journals of this cylinder have bearings in the top of the vertical sliding frame n n, Figs. 2 and 3, said frame being provided with guide-rails o o, Which move iu grooves in the inside of the frame-Work. This frame n n is hung, as it were, upon the patterns e e ce of the horizontal carriage by means of friction-rollers pp, attached to the exterior of said frame, and which rest on the top surfaces of said patterns. These rollers should be of the same diameter as the cutting or planing cylinder, in order to cause said cylinder to cut longitudinal irregularities on the block precisely similar to those of the patterns. A greater or less number of these frictionrollers may be placed between the journals ot the cylinder and the tops of the patterns, (the diameter being kept as above specitied,) in order to cut larger or smaller articles of the same shape.

The vertical motion of the frame n n, guided by the rollers, as aforesaid, is produced by the same means as is the horizontal motion for the carriage a a a-viz., the short rack p and The machine requires the care of only one 0perative, who moves the horizontal carriage a ay a with one hand applied to the crankwhecl fi, while the other, being applied to the cranku heel u, raises and lowers the vertical sliding frame nu, which supports the planing-cylinder, the operator being guided in this part of the work by keeping the friction-rollers p p in Contact with the top surfaces of the patterns e e e e, attached to the horizontal carriage. After one side ot' a piano-leg or other similar article has been cut out and planed,'the other similar faces may be formed in the same manner by turning the rough block round, first, it' a quadrilateral figure is required, through an arc of ninety degrees, then of onc hundred and eighty degrees, and then two hundred and seventy degrees from the first point, the

rough block being fastened or secured at the end of each quadrant by the springclutch c, which vengages with holes in the face of the chuck o. If an'octagonal figure is required, the rough block is turned at each movement just halt' the distance above speciiied to obtain the quadrilateral one. Any other polygonal ligure may be produced by having the chuck c provided with a requisite number of holes, so that the spring-clutch QJ may engage successively with a number of them, at equal distances apart, and corresponding to the number of sides the block or finished article is required to have.

What is claimed as new, and desired to be secured by Letters Patent, ii-

The combination of the cirriage, the pattern or patterns, the tracing roller or rollers, the rotating cutting or planing cylinder, and the means for turning and holding the block of wood to be fashioned, as described, or the equivalents of them, or either of them, the said combination being so organized, substantially as described, that by its mode ot' operation the block ot' wood to be fashioned ca-n be turned to present in succession each of its low the irregular lines of the pattern, thereby producing a polygon of any desired number of sides, of any desired. configuration longitudinally, and with all ils sides of similar form.

WARREN HALE. ALLEN GOODMAN. LORENZO HALE. JOHN M. GOODMAN.

Vitnesses D. L. RICHARDS, DANIEL STONE.

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