USRE9469E - Machine for cutting the teeth of wooden gears - Google Patents

Description

W'. GLBASQN. Machine for Cutting, the fl eeth of Wooden Gear's No. 9,469. Ressued Nov. 16,1882) L IIIHIII'IIIHIH l 5 i r Y g T iiiwi: InvenZar: %f 7/ flew-0n UNITED STATES PATENT OFFICE,

WILLIAM GLEASON, OF ROCHESTER, NEW YORK.

MACHINE FOR CUTTING THE TEETH OF \lVClODEN GEARS SPECIFICATION forming part of Reissued Letters Patent No. 9,469, dated November 16, 1880.

Original No. 175,859, dated April 11, 1876. Appli ation for reissue filed March '22, 1880.

DIVISION B.

To all whom it may concern:

Be it known that l, WILLIAMGLEASON, of Rochester, in the county of Monroe and State of New York, have invented certain Improvesectional view, Fig. 2, the general arrange .zontalshaft and cutters ment and construction of the parts involved in my invention. Figs. 3 and 5 show cutters applied to an upright shaftand a method of driving them. Fig. 4 isa plauview of a ho ri-' The nature of my invent-ion consists in providing a gear-dressing machine with attachments by which wooden gear-teeth and the teeth of wooden gear-patterns may be accurately dressed, such attachments being applifcable to my improved geardressing machine port, carrying at its upper extremity the tnr ret P, to which isattached the hinged slide D, and T is a tool-saddle, which is reciprocated by the pitman 'a. and crank s.

The slide D, head-stock O, and turret l are arranged to be adjusted so that a cutting-tool properly arranged on saddle-T will follow the .lines of either a bevel or spur gear of any diameter or face within the capacity of the machine, the shape'of the tooth being determined by a pattern or templet, i, as fully described in Division Act this reissue with reference to iron gears.

To dress the faces of wooden teeth keyed into mortise-wheels, I design to use a small.

sharp cutter-head, y, Fig. 4, fixed on the end --liead stockjii-czirryiiifitlie cutter-spind operated in planing the iron teeth of similar,

wheels. When arranged to dress the wooden teeth of bevel-gears the head-stock carrying the cutter-spindle is substituted for the ironcutting-tool stock, and is rigidly fastened 'to a sliding block similar to W. The cutter-head is then brought to the proper relative position with reference to the center of the cylindrical support E and axis 0, as described in Division A with reference to the point of the iron-cutting tool. The saddle '1 being reciprocated,

the revolving cutter is advanced in successive cuts by the feed from the point to the root of the tooth, copying the contour of the form i upon the face of the same.

To dress the faces of wooden spuriegj hf thg,

e, is fastened to the tool-stock m, adjusted and fed as before, copying the form of i upon the faces of the teeth in the manner described in Division A for dressing the teeth of metal spurgears. The reverse faces of the wooden bevel and spur teeth are cut by the same cutterhead, forms of reverse curvature being used.

I prefer to run this-cutter-spindle by a round belt or cord running on the grooved pulley (shown keyed to said spindle) at a quartertwist from the large grooved pulley M (shown in section in Fig. 2) on the counter-shaft H. In said figure, B is a circular plate, bolted overhead to the joist'or ceiling Q, having a conical portion, B extending downward, through the center of which the vertical shaft R passes and has its bearing,- the head f of the shaft preventing it from dropping out.

9 is a bevel-gear keyed to the shaft R, shouldering against the lower end of the cone B, which drives the pinion g. This latter is keyed to the end of the horizontal counter-shaft H, which is journalcd in the ends of the two arms I) of thehanger G.

p is a grooved pulley fastened to the lower end of the shaft It, designed to be driven by 'a round belt running at a quarter-twist from anothergrooved pulley keyed to the line-shaft.

The plate B has a circular dovetailed groove cutin its under surfacc,fin which two nuts, 0",

are fitted to slide, being dropped into place IOO to passin g thrpngh the same and entering the nuts c.

The plate 13 isintended to befastened the ceiling in such a position that the shaft R'zshall stand vertically over thecentral shaft in the support E.

By loosening the clampingscrews a the e rs tmthcnreradiel Wilmer-Shaft may be swung around horizontally, and made to occupy a position in the same vertical plane as that of the slide D, the nuts 0 sliding in the'circular groove, as above described. At a convenient place the hanger G is graduated in degrees of the circle, corresponding to the graduation on the turret P, by means of Which'the counter-shaft H and slide 1) may conveniently be made to occupy a position in the same vertical plane. i

w" is a spline inserted longitudinally in the side of the shaft H, and the ulley M has a corresponding keyway out i its hub, and is inade to slide to any desir l'position along the shaft, so as to correspond to the position of the cutter-spindle 19 Fig. 1.

W in Fig. 3 is an upright cutter-spindle, that I prefer to use in dressing the Wooden teeth of spur and bevel gears, which is designed to be driven in aniam'ler similar to that of the spindle 11 Fig. 1, as above described. The driving-belt leads from the pulley M, Fig. 2, to the pulley y, approaching and leaving the same horizontally by passing under the idlers w. n is asteel cutter, inserted in a mortise cut at a suitable place through the spindle N, the contour of the cutting portion of the same being made to conform to that of a cross-section of the desired space between the teeth of a spur-Wheel.

To use this attachment for dressing the teeth of spur-wheels, it is fastened in some suitable manner to the saddle T. The slide ,1) is bolted to the post N in the manner described in Division A, and the connecting-rod a and feed-rod are detached. The revolving cutter n is brought into a position so that when once passed through between two teeth it finishes the opposing faces of the same and t bottom of the space, thus giving to all the hill of the gear, when finished, the desired lehape without copying a form, 'as in the other cases.

.To dress the teeth of bevel-gears, a tool (represented at a )is substituted for the one shown at M, which-copies the form t and finishes the face of a tooth in successive cuts, similarly to the action of the cutter 11 as before described. This cutter n, it will be seen, acts upon but one face of a tooth at a time.- in using the cutter n for cutting through the spaces between the teeth, the saddle T is intended to be pushed along the slide D by hand,

instead of being reciprocated by the crank s, as in the other cases, though it may be so reciprocated by giving to the said crank a comparatively slow motion.

What I claim as my invention, and desire to secure by Letters Patent, is

1. In a gear-dressing machine, the combination, with a pivoted turret, hinged slide, reciprocating tool saddle, and a revolving Wood-cutting spindle, of a grooved pulley traveling on acounter-shaft journalediu the arms or brackets of a swiveled hanger, substantially as and for-the purpose shown and described.

2. In a gear-dressing machine, the cO. 1l2l:., nation of the pivoted turret P, hinged slide I), reciprocating tool-saddle T, and a suitablyarranged Wood-cutting spindle with the splincd counter-shaft H, grooved pulley M, pinion g swiveled hanger Gr, having arms I) b, shaft It, carrying gear g cone B", and pulley 19 all constructed'and arranged substantially as and for the purpose specified.

WILLIAM GLEASON.

\. Witnesses HAMLET S. Bniees, F. H. CLEIENTL

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