US392591A - Wood-worker - Google Patents

Description

(No Model.)

W. H. DOANE.

WOOD WORKER.

Patented'NOv. 13

nirrn Brarns1 4 e'rnnrr aries,

VILLIAM H. DOANE, OF GNCINNATI, OHIO.

weleens/cansa.

SPECIFICATION forming part o1' Letters Patent No. 392,591, dated November 13:, 1888.

Application filed July 9, 1888. Serial No. 279,370. No model.)

To @ZZ whom it may concern:

Be it known that I, WILLIAM H. DOANE, a citizen of the United States, residing at Ciucinnati, Ohio, have invented new and useful Improvements in Wood-lVorkers, of which the following is a specification. j

My invention relates to a class of woodworkers 7 in which the cutter-arbor is carried in three bearings-two terminal beyond the cutter-head and driving-pulley, respectively, and one intermediate between the cutter-head and driving-pulley,its obj ect being toprovide a construction' by which the cutter-arbor may be shifted to adjust the cutter laterally in relation to the work, yet at the same time preserve the necessary rigidity of the arbor and prevent a ragged or unequal action of the cutter-head.

In another application of even date herewith I have shown a construction to this end, in which the two cutterlhead journal-bearings, or all three bearings, are rigid projections of an adjustable box-frame with long sliding surfaces in different planes for obtaining rigidity; but in the present invention I seek to avoid the expense of such construction and to accomplish the desired end by making the bear ings independent and preserving one of the two rear bearings absolutely iixed to the bedframe,while the other is adjustable to shift the arbor and cutter, all as hereinafter more fully set forth.

Mechanism illustrating my invention is exhibited in the following drawings, in which- Figure 1 is a cross-elevation showing a coni struction in which the outer or terminal'bearings are fixed and the center bearing is alone adjustable; Fig. 2, a rear elevation; Fig. 3, a plan View of the same machine, and Fig. 1, apartial crosselevation of a construction in which the central bearing is dxed and the outer bearing is adjustable.

Referring now to the drawings,in which the letters of reference indicate the parts herein described, A designates the supporting frame or bed of the machine, and A B C designate, respectively, the rcar,central, and front bearings of the cutter-mandrel E, the latter carrying the cutter-headD and drive-pulley l?. The cutter-head D operates in the interval between two work-carrying platens, F F', which in the present case are shown mounted upon supporting guide-blocks G H, by which they are adjustable. These features need not be further described here, as they constitute no part of my present invention, and are introduced merely to define the class of machines to which my invention is applied.

The rear bearing, A, Figs. l, 2, and 3, is an upward xed extension of the base-frame or bed A of the machine The front bearing, C, 6o is also relatively fixed in position, but is detachable from the bed-frame, being held by a screw-clamp, C', operated by a handle or lever, O2. It may be removed from its position on the bed-frame and slipped from the arbor endwise when necessary to remove the cutterhead.

The arbor is arranged to be shifted longitudinally in its front and rear terminal bearings as impelled by the central bearing, B, 7o which is horizontally adjustable upon the bedframe A in gibs B. The central bearing acts as a shifting-clutch by engagement at one side against the hub of the drive-pulley., and at the other against a collar, E, secured upon the arbor, being at the same time a bearing for the arbor and relatively rigid when stationary. The bearing B is formed with an enlarged base, B2, carried in planed ways upon the bedframe, and secured in its sliding bearing by 8o gibs B.

Centrally beneath the bearing B projects a tongue, J, engaging an adjusting-screw, I, earried outward in a suitable socket in the rear wall of the bed-frame, and provided with a hand-wheel, I, by which means the adjustment is made.

It will be observed as the leading principle of the construction that the cutter-arbor is retained in two relatively fixed bearings at all 9o times,while the third bearing is alone adjustable. The advantage of this is that the proper alignment of the arbor is preserved and is practically independent of any lost motion in the intermediate or movable bearing, because of the xedness of the other bearings. As an alternative embodying the same principles, and on some accounts preferable, l have shown in Fig. 4 a construction in which the bearings B and C are fixed, while the rear terminal 10o bearing, A, is made adjustable inthe manner already described. The fixed bearings are thus brought closer together and in such relations to the cutter as to preserve the utmost rigidity While in action.

I claim as myinvention and desire to secure by Letters Patent of the United States- In a Wood-Worker7 in combination with the cutter-arbor and a detachable but relatively fixed front bearing for the same, tWo other independent bearings, one intermediate between the cutter-head and drive-pulley and one terminal beyond the drivepulley-one of which supplemental bearings is positively Xed and the other adjustable to shift the a1'- bor and cutter-head laterally in relation to the Work, substantially as s et forth.

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

VILLIA M H. DOANE.

W itn esses:

L. M. Hosm, L. E. HosnA.

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