US36901A - Improvement in combined planing and matching machines - Google Patents

Description

` tion of the same. and longitudinal section of the same.

UNITED STATES;

y, PATENT OFFICE. "l

WM. H. DOANE ANDVM. E. LONDON, OF CINCINNATI, OHIO.

IMPROVEMENT IN yCOMBINED PLANING AND MATCHING MACHINES.

Specification forming part of Letters Patent No. 36,901, dated November 1l, 1862.

description of the same, reference being had to the accompanying drawings, forming part of this specification, in which- Figure l is a plan or top view of a planingmachine frame with our improvements applied to it. Fig. 2is a vertical longitudinal section of the same, Fig. 3, a vertical transverse sec- Fig. 4 is a partial side view Fig. 5 is a side elevation of the gearing side of the machine. Figs. 6, 7, and 8 are views of the expansion-gearing of the feed-rollers. Fig. 9

is a horizontal section of the head of one of the grooving or tonguing cutterstocks.

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

Our invention relates, first, to the attaching of tonguing, grooving, or matching works of planing-machines to a sliding bed or ways, or the equivalent thereof, whereby they can be instantaneously removed down out of the way belowthe top of the bed upon which the planing-tools cut, so that the same machine can be used for planing either Wide or narrow lumber without any detriment or delay to the Operator, and thus not only a double purpose is accomplished, but a machine of great importance produced, which may be used at pleasure either for planing wide and narrow 'the roller is rmly held in true position.

It relates, fifth, to an arrangement of expansion gearing, combining geared levers, and

`operating in a novel and useful manner.

It relates, sixth, to an arrangement of the sliding foot and spring within the head-frames of the matching-cutter, so as to prevent the clip to the board in matching. f

To enable others skilled in the art to make and use our invention, we will proceed to describe the same with reference to the drawings.

A represents the frame and bed of a planing-machine; B B, the feed-roller. Upon this frame and bed, in the usual or proper relation to the feed-rollers, planing-works (not shown) are to be arranged. Behind the feed-rollers the tonguing and grooving or matching works C C are arranged upon a vertical :sliding bed `or frame, D, so as-to be raised above the top of the planing-bed, as shown in red lines, or to be lowered below the top of said bed, as shown in black lines, as circumstances'may require. The lower feed-roller, v B', has its journals fitted in boxesl a a. In the bottom of these boxes dovetail grooves b b are cut, into 4which dovetail heads c of vertical screw-bolts d it snugly. The screw-bolts are extended down through the solid parts of the guideescrewed on their lower ends, so that the roller B can be drawn down and held firmly to its proper position. There has been more or less trouble experienced in keeping the boxes of the feed-roller B solid and in position. In `feeding the roller turns up, which has a tendency to raise the boxes. To obviate this, the boxes of the roller have either been keyed in or confined by set-screws from the side, both of which modes are objectionable. y

Our plan of casting the dovetail slot or groove in the bottom of the boxes and inserting a bolt with dovetail head to hold them. down we have used with great success. The upper feed-roller has its journals fitted in sliding boxes, which are adj usted up and down in the guide-standardsE E by means of screwrods f f' and bevel-gears g g h h, arranged as shown, and operated by a crank-shaft, F.

B an internally-toothed pulley, G, is arranged; also, aswinging bracket or two-armed hanger, H, and a segment-toothed lever, I, which is iloosely attached. The swinging bracket carstandards E E of the frameA, and have nuts i On the outer ends of the journal of the roller nut.

zontally through it.

:and collar t.

ries at its lower end two pinions, J J, one of which gears with the internal-toothed pulley G and the other with an intermediate spurgear, K, of the ordinary system of spur-gearing. v

To the shaft or axis of the vpinions J J a lever, L, is affixed loosely. y The lowerpart of this lever is tted loosely round the journal of the lower feed-roller, B', while the upper portion is of segment form and toothed, and gears with the teeth of the segment-leverl, as shown. The levers are constructed with a blank tooth and a linger, m m', so that their movement shall be arrested at the proper time.

.Our experience with the use of expansiongearing has proven the comparative worth- 4lessness of the same without the aid of the f geared levers..

By the combination of the geared levers a twofold object is secured. The intermediate ,l pinions, J J, are kept in a position equidistant from the centers at all times and in full gear, which relieves them from all strain and prevents binding or cornering 7 on the other gears. The blank tooth and iingerm m of the t geared levers act as a check, preventing the feed-roller B from being raised or lowered above or below a certain distance. The bed or frame D, on which the matching-works C C are arranged, has its vertical side edges beveled, as at jj, or they may be squared, or any other suitable shape, and these edges are fitted to slide freely against the inner beveled vor otherwise shaped edges of two cleats or ways, kk, of the frame.

The matching-works C C are connected to the frame D by means of dovetailsformed in the boXesZ Z of the cuttershafts, and horizontal dovetail cleats n n, formed on the back of the frame D. `Th us while the frame moves up and down with the matchingworks C C the matching-works can be moved ranged in a box, M, with its. stem o bearing against a flat steel spring, p, as shown in Figs. 1 and 9 of the drawings. Vith this addition the boardplaned comes through the rollers and strikes against the foot iirst. The foot yields just enough to allow the matchingknives to work free, and yet acts with suffi- `cient force to prevent the end of the board from skewing77 round andbeingclipped. The spring is so placed and closed in that the shavings will not be liable to choke it.

The means provided for moving the matching-works apart or together are a screw and The nut q is formed on the standard r of the boxes Z Z, and the screw r extends hori- The screw has its head r2 square, and is supported and kept from moving laterally by means of a bracket, s,

works C C, and therefore is inside of the frame This bracket is formed on or attached to the frame D of the matching- ,A. So, also, is the square end of the screw- This arrangement` or location is necessary,becanse if the square end of the screw extended outside of the frame A the matching-works could not be raised or lowered unless the frame Awas weakened by being made of open or lattice metal,which would form a space for the screw to rise and descend in. To thus obviate the weakening of the frame A, we bore a round hole, w, through one of its sides, and through this hole insert a turn-key with square socket in its end to receive the square end of the screw n', whenever it is desirable to set the matching-tools farther apart or nearer together. It is obvious that the screw r might be constructed with a right-and-left thread, so that both tools move apart or together simultaneously.

The means provided for raising and lowering the frame with matching-works arel a shaft, N, with two bevel-wheels, '0 0, near its ends, and two screw-rods, l? l?, with bevelwheels Q Q'on their lower ends. The crankshaft passes through the frame A, while the screw-rods are iitted to nuts formed in brackets x m of the frame D. The bevel-wheels of the shaft N and of the screw-rods gear together, as represented. With this arrangement, by turning the crank-shaft the matching-works can readily be adjusted to suit different thicknesses of stuff to be tongued and grooved, thus rendering change of bits unnecessary.

Again, if it is desired to plane very wide lumber, the heads with cutters of matchingworks C C can be lowered below the surface or level of the top of the bed of frame A.

For ordinary widths of lumberr which is being tongued and grooved sufficient lateral adjustment of the matching-works can be effected by the screw r; but while this is the case it is often necessary to lower the heads of the works G C, so as to suit the varying thickness of such lumber and obviate the change in the bits. l

Our arrangement provides for this necessity, and thus possesses two advantages--viz., it answering for simply planing very wide lumber, and also for planing and tonguing and grooving ordinary widths of lumber of varying thicknesses, without requiring a change in the bits of the matching-works C C.

Our invention as a whole constitutes a planing and matching machine of great utility and convenience, saving the expense of a separate machine for planing very wide lumber, and also the expense of eXtra bits in tonguing and grooving ordinary widths but Varying thicknesses of lumber with machines adapted particularly for planing and matching such lumber.

What we claim as our invention, and desire to secure by Letters Patent, is-

1. In a combined planing and tonguing and grooving or matching machine, so attaching the tonguing and grooving or matching works that they may be adj usted to a position above or below the top of the planing-bed, substantially in the manner and forthe purpose de scribed.

2. In a combined planing and tonguing and grooving or matching machine, the sliding frame or bed D, With matching-works mounted upon it and operated by the gearing P P, O O, Q Q, and N,so as to raise or lower the matching-Works above or below the top of planing bed, all constructed and arranged substantially in the manner and for the purpose described. Y

3. In a combined planing and matching machine, the arrangement of the screw-shaft r', sliding bed D, with matching Works C C mounted upon it, and the aperturel w in the closed plane A, substantially in the manner and for the purpose described.

4. The arrangement ofthe sliding guardfoot L and its spring p, substantially in the v manner andfor the purpose described.

5. The combination of the lower feed-roller,

B', and its boxes a, with dovetail slots b in' lever-segments I L, constructed as described,

in combination with a system of expansiongearing for feedrollers of a planing-machine, substantially as and for the purposes described.

WM. H. DOANE. WM. E. LONDON.

Vitnesses: H. HEDRICK,

WV. L. ALDRIcH.

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