US88943A - Improvement in shingle-machines - Google Patents

Description

japan/Lama ILPEKERSA PHOTO-L TMOGRAPMR WASHINGTON u C GMO@ MERRILL CHASE, JR., AND HORACE J. MORTON, OF SOUTH PARIS, MAINE, ASSIGNORS TO THEMSELVES AND FREEMAN O. MERRILL, OF SAME PLAGE.

Lette/rs Patent No. 88,943, datczlApriZ 13, 1869.

IMPROVEMENT IN SHING-LE-MACHINES.

The Schedirle referred to in these Letters Patent and making part of the same.

To all whom it ana/y concern:

Be it known that we, MERRILL CHASE, Jr., and HORACE J. IVIORTON, of South Paris, in .the county of Oxford, and State of Maine, have invented an Improved Machine for Sawing and Planing Shingles and Headings; and we do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings, making part -of this speciticationcally around the shaft of the carrier, and, at each revolution, are brought successively to the saw and planer.

The working parts of the machine are mounted in a suitable frame, A, a proper form thereof being represented in the drawings.

The shaft b, of the saw, B, receives the power direct, on a driving-pulley, a, and from this shaft a belt communicates motion to the shaft c, of the planer, O. n

In order to communicate the proper revolving motion to the bolt-carrier, D, a belt communicates a slower motion to au intermediate shaft, e, on which is a small driving-pinion, F, gearing into a'large cog-wheel, f, on the shaft d of the carrier. By this means, the carrier is revolved at the slow speed necessary, as compared with the rapid revolution of the saw.

The body of the bolt-carrier is composed of two polygonal frames, g g, of equal size, and placed in parallel and corresponding positions on the shaft d.

On each face, or side of these polygons, is secured a bolt-holder, only one of which is represented in the drawings, but they are all alike, and a description of the one represented will serve for all. A

The holder has two pairs of clamping-arms, between which the bolts are placed, one pair being stationary, and the other pair movable. The stationary pair, G G, is secured to the polygonal frames g g, and forms connecting-bars therefor, extending transversely from one to the other. The movable pair, I I, is pivoted, or hinged to standards, H H, projecting outward from one of the polygonal frames, the one further from the saw and planer.

These standards may properly be made in one piece, respectively, with the stationary arms G G, as represented, forming therewith right-angled projecting arms.

These two clamping-arms, together composing one sideof the clamp, are raised to receive, and locked to hold the bolts, by means of a double lever, K, pivoted, on a shaft, k, to and between the standards H H, and provided with an operating-handle, l.

These levers act as double cams and locks, rst, by the inner ends, or projections m m, acting under projections n. n, on the under side of the arms H H, to lift a-nd hold up the said arms, to receive the bolt, when the handle l is raised, as indicated by red lines in fig. 3; second, by the outer ends, or projections o o, to bring down the arms to the bolt, and, finally, to hold the bolt with a suiiicient, but yielding pressure, by acting against springs, p p, secured to the said clampingarms, and projecting down past the said levers, all as represented by black lines in the'same figure.

The bolts are directly held by rollers, M M, mounted by journals, respectively, in the ends ofthe stationary and movable clamping-arms, sc that they may turn therein, and feed the bolt, successively, a shingles thickness, to the saw and planer.

They are both composed of sets of spur-Wheels, with pointed peripheral projections, to prick the ends of the bolts, and hold them in place.

They are placed upon their shafts alternately with blocks or washers, which separate them, and are of less diameter.

The rollers are turned at regular intervals, so as to feed the bolts to the saw and planer, by substantially the following means:

On one end of each roller-shaft is a ratchet-Wheel, P, (shown separately in fig. 5,) provided With'teeth, fr s, alternately at greater and less distances apart, such that apawl, of uniform movement, will alternately move that end of the bolt sufficiently to make, first the thick, and then the thin end of a shingle.

These ratchet-wheels are moved by pawls, R S, which are pivoted to a vibratory lever, T, that moves on a fulcrum, t, attached to one of the standards H H.

The pawls are pivoted, one below, and the other above the fulcrum t, and equidistant therefrom, so that the vibration of the lever will operate them equally, but alternately. Such a movement of the pawls, to the proper extent, together with the ratchet-wheels, with alternately-unequal teeth, will move each roller alternately the proper distance to make, first, the thick, and then the thin end of a shingle, and the rollers will, of course, alternate in action, so that the shingles will alternately change ends, as cut from the bolts.

The required vibratory movement is given to the lever T, as represented, by means of a circular stationary cam, V, secured to the frame A, concentric with the shaft of the bolt-carrier, and the heel w, of theV lever runs in the peripheral groove of the cam.

There is a lateral bend, c, in the groove, in the proper position to throw the lever the required distance at each revoIutiou of the bolt-carrier, and, since each bolt-clamp on the carrier has a lever, all of these levers are acted on alternately by the cam.

The feed-rollers are held from turning, when not required to be moved by the pawls, by means of guardplates, W W, one attached to the upper or outer clamping-arms, and the other, as shown, to one side of' the adjacent polygonal frame g.

The projecting edge of the guard-plates terminates in separate ugers, q q, which it between the spurteeth of the feed-rollers, and bear against the peripheries of the intermediate washers, or disks. Sufficient elasticity may he given to these plates to produce the requisite yielding-pressure on the rollers, and this pressure may be adjusted by tightening or loosening the bolts by which the guard-plates are attached to the clamping-arms, or polygonal frame.

The guard-plates serve an additional purpose, that of holding the spentblock, or slab, as it passes from the hold of the feed-rollers.v For this purpose, the guard-fingers reach inward, so as to be in line w'ith the inner tangents of the spur-teeth of the feed-rollers.

The size of the bolt, or block-carrier, and the position of the saw B in relation thereto, are such that the shingle-bolts, or blocks, placed endwise between the rollers, will sweep by the saw, on the further side of its shaft, or centre, so that, in all'positions in which the saw cuts in the bolts, or blocks, the teeth will act upon the wood with the grain, and never against it, whereby, it is known, that considerably less power is required to saw the shingles than when the saw cuts against the fibres of the wood, as it necessarily does, in part, by the ordinary arrangements of shingle-Inachines. Ve know no construction of shin gle-machines by which the saw-teeth act so favorably, in this respect, upon the bres of the wood.

Upon the face of the planer-head is a concentric ring, i, projecting from the otherwise plane face, the thickness of the shaving designed to'be planed from the surfaceof the shingle-block, and situated just inside of the plane-knives, zz. Thisannular projection, as it runs close to the surface of the planed block, gauges the motion of the planer in relation thereto, and prevents any vibration, or swaying of theI planer. vIt also serves to gauge the setting of the knives equally and properly.

The same relative position of the block, or bolt-carrier and the planer, as with the saw, is observed, as far as practicable, so as to plane lengthwise of the fibres of the wood, and thereby perform the planing more easily, and do smoother Work.

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

l. The combination of the xed and movable blockclamping arms G Gand I I, with the feed-rollers M N, and the polygonal block-carrier g, substantially as herein specified.

2. Also, the arrangement of the feed-rollers M M, with the saw and planer, all operating as described, for the purpose set forth.

3. Also, the combination of the double cam-lever K, standards H H, and movable clamping-arms I I, with their cam-projections n n, and springs p p, substantially as and for the purpose herein specified.

4. Also, the stationary circular cam V, in combination with the revolving block-carrier and the vibratory pawllevers T T, substantially as set forth.

with the feed-rollers M M, substantially as and for the purposes herein specied. d

The above specification of our improved machine signed by us, this lst day of September, 1868.

MERRILL CHASE, JR. HORACE J. MORTON. Witnesses:

FRANK HARVEY, RICHARD' EVANS.

5. Also, the finger-guard plates W W, in combination

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