US368845A

US368845A - Charles mcneal

Info

Publication number: US368845A
Authority: US
Publication date: 1887-08-23
Anticipated expiration: 1904-08-23

Description

v(No Model.) 2` vSheets- Sheet 1A C. MGNEAL.

RABBBTING MACHINE. No. 368,845a 4Patented Aug. 28, 1887.

n v u U u T 2' Shee'ns--Sheet` 2. C. MGNEAL.

RABBETING MACHINE.

Patented Aug. Z3, 1887.

UNTTED STATES CHARLES MONEAL, OF MISHAVAKA,

INDIANA, ASSIGNOR TO THE DODGE MANUFACTURING COMPANY, OF SAME PLAGE.

RABBETING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 368,845, dated August 23, 18:87.

Application filed August 4, 1886. Serial No. 209,977. (No model.)

To @ZZ whom, it' may concern.'

Beit known that I, CHARLES MoNEAL, of Mishawa-ka, in the county of St., Joseph and State of Indiana, have invented a new and useful Improvement in Rabbeting-Machines; and I do herebydeclare that the following is a full and accurate description of the same.

Figure l is a perspective view of my machine. Fig. 2 is an end elevation of the same. Fig. 3 is a plan ofthe same. Fig. 4 is a front elevation of the same. Fig. 5 is a perspective View of one end of the pulley-arm, showing the parts produced by my machine. Figs. 6 and 7 are respectively an end and a side elevation of the end of said arm. Figs. 8, 9, and 10 represent modications of the restbar.

This invention relates to a machine adapted to use in the manufacture of the spoke-arms for the wooden pulleys described in my patent granted October 19, 1886, and for other similar purposes. For convenience, and to impart a full understanding of my invention, I will briefly describe the pulley and -its arm. The rim of the pulley is made from short curved segments eut from suitable boards properly packed so as to break joints with cach other'and rml'y glued together, thus constituting a solid composite rim. The arms .or spokes I make of two pieces of suitable planksv of hard wood, long enough to reach across the interior diameter of the rim and be embedded at each end in said rim. These spokes are placed parallel with each other, and at their centers each arm is provided with a block which serves as one-half the hub. At each end of the pulley-arm I make a dovetail tenon to enter a proper mortise in the pulleyrim. This firmly unites the rim and arm, so that they cannot separate and so that the rim cannot spread. To facilitate the fitting of the dovetail tcnon to the dovetail notch or mortise, and to secure a solid and sound joint without difficulty, I cut said tenon a little thinner at one edge than the other, so that a wedge may be driven in to force all the surfaces solidly together. The hub-block at the center is seated in a shallow transverse groove cut in the arm to render solid and'secure the attachment of the block to the arm.

The machine described and claimed herein is designed for the purpose of cutting the transverse rabbets and grooves which provide the arm with the dovetail tenons and seat for the hub-block.

The spoke-arm A is therefore provided with the transverse rabbets, forming shoulders c and f at each end, and a transverse groove, b, across its middle to receive and seat the block cl, which constitutes one-half the hub of the pulley, as shown in Fig. 1.

B is the frame of my machine, and C is the table, provided near one edge with a l'ongitudinal groove, g, to serve as a guide for the carriage-frame I-I, upon which the blank A rests and is carried to thc cutter. o

D is the shaft for the cutter-head E, and F is the driving-pulley for the same.

The table G may be raised or lowered to adjust its surface properly as to the cutters, and for convenience it is also usually made in two 7o parts, so that that part which is on one side of the cutter may be adjusted independently of that part which is on the opposite side of the cutter. It is also common to make these parts l independently adjustable toward or away from 7 5 the cutter, because cutters of different diameters are used. Therefore each part of the 'table C is mounted upon the under frame, C',

and adapted to slide longitudinally in guides thereon, and is provided with a standard, S, 8o and a set-screw, i", whereby it may be locked fast to the under frame, C', at any desired point. The under frame, C', is providedwith pendent arms d,which move in vertical guides e on the frame B, and is controlled by the screws g,actuated by means of the hand-wheel h and its shaft and mitergears. This structure of frame and table is that common to inachines of this class, but is not essential to the particular duty required of it in connection 9c with this invention. The groove b, and the end rabbets are 'cut with the ordinary groovinghead, E, the blank arm being presented in different positions, according to the required direction of the cut. The carriage H is adapted to slide on the table C and be guided thereon by the part G, which fits into the groove g. Said part G may be of equal Width with said groove, as shown in Figs. 2 and 3, or may overlap and rest roo partly on the surface of the table, as shown in Fig. 1; but this is not material. The carriage is adapted to overhang the machine frame and table, so as to support the blank spoke-arm A with one end only presented to the cutter. It is necessary to overhang as shown, because it is necessary to support said arm in a position oblique to the horizon, and because the presence of the driving-pulley F on the opposite side of the machine would prevent the passage of any but very short spokearms if arranged to be presented to the cutter. from the other side of the machine. The carriage is conveniently made with two inclined side bars, which rest upon the sliding bar vGr at their middle, and are supported upon the sliding bar i at their inner ends. The sliding bari rests upon the table C on the pulley side. rlhe outer ends of the side bars sustain thegageframe J, which is provided with two horizontal rest-rails, n, for the adjustable rest-board m, which is designed to support one end of the spoke-arm A. A rest-bar, k, is attached to the carriage parallel with and close to the plane of the cutters to Vsupport that end of the spoke-arm which is being acted on by the cutters.

The restiboard m and the rest-bar lc being on different levels, it follows that the distance between them will determine the inclination of an object resting on both. I therefore make the rest-board m adjustable along the rails n and provide a clamp or latch to hold it in the desired position. A convenient lock consists of a latch, l', to engage in one of a series of notches, t', made in one of the bars n, and one of said bars may also beinscribed with a scale of inches for convenience in changing the adjustment of the board m.

It will beunderstood that the end tenon is dovetailed with the characteristic dovetail cut all on one side and with the shoulder c inclined to correspond with the curve ofthe pulley-rim. As this curvature will vary with the diameter of said rim, a change in the position of the restboard m is necessary to secure the proper in! clination of the spoke-arm. As before stated,

one edge of the tenon is cut thinner than the other edge to permit the insertion of a wedge. I therefore provide means for supporting the arm A with one edge higher than the other, so that the cutter will penetrate deeper at the lower edge. I desire to cut this transverselyinclined side of the tenon with its surface longitudinally parallel with the side of the armv inclination determined by a screw, 7c', which passes through a screw-nut attached to the carriage H, as shown in Fig. 9, or a shoe, x, with an inclined surface may be put on the bar lo,

as shown in Fig. 10; and an easy and efficient means is by means of a series of holes, o, successively increasing in depth, and a pin', u, which may be placed in either one of said holes. rIhe series of holes in the side of the bar 7c, Figs. l and 8, are merely for the escape of dirt which may fall into the pin-holes "v.

A gage-rod, Q, is hinged -at one end to the carriage H, preferably at its inner or higher side, and is provided with a segment, r, at its outer end. Said segment passes through a loop on the outside of the carriage, said loop being provided with a set-screw to clamp the segment in position. A traveling gage, S, is mounted on said rod.

When the rests 7c and m are in proper relative position and an arm, A, properly located thereon by measurement, the traveling gage S is moved along the rod Q until it engages some shoulder or end of the arm A, and thereafter it serves to locate successively the other similar arms as they are placed onV the machine.

In operation an arm is placed on the carriage and held there while said carriage is` pushed forward and the arm thereby presented to and carried over the cutter.

Having described my invention, I claim as new- l. The table G, providedl with the guidegroove g, shaft D, and cutter-head E, combined with the inclined carriage H H, adapted to slide on the table C, conducted by the groove g and to overhang the side of said table, said carriage being provided with a longitudinal rest-bar, 7c, to support the end of the spoker arm blank near to the cutter, and with the adjustable gage-board m, to support the opposite end of said blank in the desired position as to the horizon, and the gage S, adapted to engage some shoulder of said blank and thereby definitely locate the place to be cut by said cutter, substantially as set forth.

2. The table C, provided with the shaft D and cutter-head E, combined with theinclined carriage H H, adapted to slide and be wholly supported in guides upon the table C and to overhang the same, provided with a'longitudinal rest-bar, k, near to the plane of the cutter, and the gage-board m, laterally exterior to the base of the machine, said gage-board being adjustable laterally to vary the angle at which the spoke-arm blank is presented to the cutter, and the adjustable gage S, substantially as set forth.

3. The table C, provided with the shaft D and the grooving cutter-head E, and the inclined overhanging carriage H H, adapted to slide and be wholly supported on said table, combined with the rest-bar k, the supportingbars a, the gage-board m, adj ustable longitudinally thereon, and the hinged bar Q, provided with the adjustable gage S, substantially as set forth.

A. 'Ihe table C, provided with the shaft D and grooving cutter head E, combined with the carriage H, overhanging the side of said table and adapted to slide and be supported IIO IZO

wholly thereon, provided with the gage-board 6. In a rabbeting-Inachine, a carriage to rem, and a rest near to the cutter adapted to ceive and hold the blank spoke-arm and carry hold the spoke arm with one edge higher than it to the cutter, a rest-bar, k, near to said cutthe other, for the purpose of cutting the rabbet ter to support one end of said blank, and a 5 f deeper at one edge of the arin than at the gage-board, m, to support the other end ofthe 2o other.- A same, combined With the supplemental sup- 5. In a rabbetng-machine having a table, porter w, removably attached to said gage- C, shaft D, and cutter-head E, a carriage to reboard m, to raise the supporting-surface to the ceive and carry the blank spoke-arm to the cutlevel of the rest bar k, substantially as dem ter, and a rest-bar, k, provided with a series of scribed.

holes, v, progressively increasing in depth,

combined with a rest-pin, u, for an adjustable CHARLES MCNEAL' support to hold one edge of said blank higher Witnesses: than the other, to cause the rabbetf to be cut WILL W. DODGE,

I5 deeper at one edge of said arm. W. H. DODGE.