US195204A - Improvement in machines for planing and grooving wash-board legs - Google Patents

Description

C. T. BRANDON. MACHINES FOR PLANING-AND GROOV'ING WASHBOARD-LEGS.

Patented Sept.18,187'7.

N.195,zo4-.

N. PETERS. PHOTO-LITHOGRAPHER. WASHINGYON. D C.

UNITED STATES ATENT OFFICE.

CHARLES T. BRANDON, OE TORONTO, ONTARIO, CANADA, ASSTGNOR OF ONE-HALE HIS RIGHT To JAMES SAURIN MCMURRAYAND THOMAS RICHARD FULLER, OE SAME PLACE. i

IMPRovEMENT 1N MAcHmEsrol-i PLANING AND GRoovlNc WASH-BOARD LEGS.

Specification forming part of Letters Patent No. 195,204, dated September 18, 1877 application tiled May 22, 1871.

To all whom it may concern:

Be it known that I, CHARLES THOMAS BRANDON, of the city of Toronto, in the county' of York, in the Province of Ontario, Canada, mechanical engineer, have invented a new and useful Wash-Board-Leg Planing and Groovin Machine; and I do hereby declare' that the following is a full, clear, and exact descrip tion, and Fig. 3 a cross-section., ot' a machine constructed according to my invention. 4, '5, '6, 7, and '8 are details.

A is the frame of the machine, constructed of any durable material, arranged substantially in the manner shown. B is the drivingpulley, with loose pulley keyed to the drivingshaft B1, placed at one end of they frame. From this shaft, by means of the pulley B2, motion is communicated to the shaft C, )laced near the center of the frame. This shaft Gis mounted in bearings upon the end ot' a pivoted frame, C', insuch-manner that theshat't .mayrise and fall, as required, vertically. 0n .the shaft C are secured two vsets of pla-ner- Figs.

' knives, D D, the cutting-edges of which are concave, and are, in width, left a little larger than `the width of a wash-board leg. lhe iinish'these knives will give in cutting, it is evident, must be convex. v

Eis a traveling carriage, iitted betweenand supported upon a pair of metal bars, F F.

This carriage, on its under face, is provided with a toothed rack, F', into which is geared a wheel, G. A portion only of the periphery -Ot' the wheel G is toothed, in order that the carriage may be moved forward a certain xed distance only. The balance of the periphery is cut down below thebottom of the teeth,

and permits the carriage to be returned to a starting-point by the weight H. Acontin-unous rotary motion in one directionv'is thusper- 'wheels l2 and I3, shaft J lworm J1, and wormwheel J2,l andA shaft K, on which Shaft the wheel Gis keyed. The friction-wheel I2 is fitted on afeather, and is, for starting and stopping purposes, thrown in and yout of gear by the lever I3. l

L L are upright shafts, supported in bearings upon frames L1L1,whichtrames are hinged at the lower end to a vbase-piece, L2, and Aat the upper end are held in slotted brackets M M, 'the slots m m in which brackets permit the shafts to be moved to andfrom the center of the machine, as required.

N isa spiral spring,connecting the two upright shafts controlling the movement. The shafts are driven from the shaft ll by the pulleys l:j and L3. To the upper endof -these shafts saws O 0, ot' a thickness equal yto the Width of the groove to be cut in the leg, are fastened. i

P is a form-plate, fastened to the underside of the carriage E. The edges of this plate are recessed for an interval, 10 p, equal to the 'length of the-groove required' in the washboard leg; andthe position ofthe former and the wash-board legs of the carriage' is so arranged in relation to the saws O O that when the saws, by means of the recesses p p, are permitted to approach the center of the machine. and out away-the wood, a groove will be formed in the legs ot' the length -of the recess, and in a position on the 'legs which can never vary.

To facilitate the movement of the shafts L L in and out ot' the recesses p p, frictionrollersl l are `fastened lto the frames L Ll, andthe ends ot' the recesses are rounded; and, in order that the carriage may return freely without interfering with the saws, linger-pieces L4 are attached to the frames L1 and project toward the center, engaging with a lling-piece, G1, on each side of theweb of the wheel G. These filling-pieces keep the saws clear of the form on the return-stroke of the carriage.

The carriage E is' provided with a midfeather, El, projecting a suitable distance above the face of the bars F. One end of the midfeather is tapered to correspond with the required taper on the legs. On this midfeather the frame and shaft C C are supported by the tapered bearing block Q, in such manner that the top of the midfeather becomes a form, to the shape of which the knives D D cut the face of the legs. The tapered end of the form nishes with a block, E2, which block engages with the ends of the legs and drives them forward.

From the shaft C to the end of the hars F raised side guide-pieces R R are fitted in the bars F, for the purpose of guiding the legs to the next or bottom planing-knives S and out of the machine.

The knives S are attached to a head on a shaft, S1, which shaft is supported in adjustable bearings S2 S2, in order that the cut may be regulated, and a section, T, of the face of the bars F, beyond the shaft C, is made adjustable, being mounted on set-screws, by which the face may be raised to compensate for the thickness of the cut of the knives, and thus allow the legs to be turned out with parallel faces.

T asprings, placed at intervals over the line of the bars F F, for the purpose of guiding and steadying the legsin their passage through the machine.

In addition to the springs, one or more rubbing blocks may be inserted, as a further guide.

In operation, the blanks (see Fig. 4.) are received of the right length and placed on the face of the bars F F in pairs, one on each side of the midfeather. The ends of the blanks are firmly pressed against the block E2, which block, when the wheel Gr engages with the rack of the carriage, drives them forward under and past the knives D D.

Immediately after the partly-toothed Wheel G has turned the distance of its toothed face the carriage is freed, and is, by the weight El, returned to its starting-point, when the operation is repeated. During the forward progress of the carriage the saws O O are drawn inwardly at the proper interval by the spring N, cutting the side grooves. The next movement of the carriage forces the preceding pair of legs forward over the under cuttingknives, and the following movement pushes them out of the machine completed and ready to be worked into the Wash-board.

It will be evident from an inspection ofthe drawings that, although the machine is a double machine, turning out two distinct sets, one for the right-hand and the other for the left-hand side of the wash-board, at one operation, its capacity could be largely and cheaply increased, using the same drivinggearing throughout, by a duplication of the carriage and attachments and side saws on a slightly modified construction of frame.

I am aware that the movements of the different essential working parts of my machine could be eected by other mechanical means and motions than those given. Therefore Ido not limit my claim to the exact construction shown but I claim as new and desire to secure by Letters Patentl. In combination with the horizontallymoving carriage E, provided with form E1, the pivoted frame C,provided with the rounding and tapering cutters D, arranged and operating substantially in the manner and for the purpose set forth.

2. The combination, with a horizontallymoving carriagaprovided with form P, ofthe right and left side 'grooving-saws O, arranged and operating substantially as described.

3. In combination with the horizontally moving and feeding carriage E, provided with forms El and P, the rounding and tapering cutters D, the right and left groovin'g-saws O, and the adjustable under cutting-knives S, substantially as shown and described.

4. The hinged frame C', provided with the cutters D D and tapered bearing-block Q, in combination with the carriage E, provided with the form E', substantially as shown and described.

5. In combination with the continuouslyrevolving partly-toothed wheel G, carriage E, with rack F and weight H, substantially as shown and described.

6. In combination with the partly-toothed revolving wheel G, provided with the sectional iilling web pieces G', the hinged frames L1, provided with the projecting finger-pieces L4, substantially as shown and described.

7 The adjustable sectional barsT, arranged to receive the legs after they have passed the knives S, substantially in the manner and for the purpose set forth.

8. The guiding and supporting bars F, in combination with the carriage E, cutters D, and saws O, substantially as shown and described.

9. The combination of the driving-shaft B1, pulleys B2 and I, shaft I1, friction-Wheels I2 I3, shaft J, worm J1, worm-Wheel J2, shaft K, and sectionally-toothed wheel G, with the carriage E, arranged and operating substantially in the manner and for the purpose set forth.

G. T. BRANDON.

Witnesses: v

DONALD C. RiDoU'r, GEO. A. AIBD.

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