US309066A

US309066A - Key-seat cutter

Info

Publication number: US309066A
Authority: US
Publication date: 1884-12-09
Anticipated expiration: 1901-12-09

Description

(No Model.) 5 Sheets-Sheet 1.

' G. A. LANPHERE.

KEY SEAT CUTTER. No. 309,066. Patented Dec. 9. 1884.

(No Model.) 5 Sheets-Sfieet 2.

- O. A. LANPHERE.

' KEY SEAT CUTTER. I

No. 309L066. Patented Dec. 9. 1884.

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5 Sheets-Sheet 3.

O- A. LANPHERE, KEY SEAT CUTTER.

Patented Dec. 9, 1884.

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- arme (No Model.) 5 Sheets-Sheet 4.

G. A. LANPHERE. KEY SEAT (BUTTER.

No. 309,066. v Patented Dec. 9, 1884.

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OHAUNCEY A. LANPHERE, OF SILVER GREEK, NEW YORK.

KEY SEAT CUTTER.

SPECIFICATION forming part of Letters Patent No. 309,066, dated December 9, 1884-.

Application filed February 1, 1884 (No model.)

To all whom, it may concern:

Be it known that I, OHAUNQEYA. LAN-- PHERE, of Silver Creek, in the county of Chautauqua, in the State of New York, have invented new and useful Improvements in Key-Seat Cutters, of which the following is a specification.

This invention relates to an improvement in that class of machines which are employed for cutting key-seats or grooves in the hubs of gear-wheels, pulleys, &c.; and it refers more particularly to a key-seating machine which is provided with a reciprocating cutter operating by a succession of shallow cuts until a groove or seat of the desired depth is produced.

The object of my invention is to so organize the machine that the cutter is by a simple mechanism automatically fed forward before beginning each cutting-stroke, and is slightly withdrawn from the work during the returnstroke, thereby relieving the cutter from friction during the returnstroke and avoiding injury to the cutter.

My invention consists, to these ends, in the improvements in the construction of the machine, which will be hereinafter fully set forth, and pointed out in the claims.

In the accompanying drawings, consisting of five sheets, Figure l is a side elevation, and Fig. 2 a rear elevation, of my improved machine. Fig. 8 is a sectional elevation, on an enlarged scale, of the cutter and connecting parts. Fig. 4 is a cross'section in lines: as, Fig. 3, looking downwardly. Fig. 5 is a cross section in line 3 y, Fig. 3, looking upwardly. Fig. 6 is a top plan view of the rest upon which the work is placed. Figs. 7 and 8 are top plan views, and Fig. 9 is a perspective view, of the removable rests. Figs. 10 and 11 are side'elevations, on an enlarged scale, of the feed-wheels. Fig. 12 is a top plan view, and Fig.- 13 a bottom plan view, of the same. Figs. 14 and 15 illustrate the operation of the feed-wheels. Fig. 16 is a fragmentary side elevation of the wedge. Fig. 17 is a longitudinal cross-section, on an enlarged scale, in line 2 z, Fig. 1.

Like letters of reference refer to like parts in the several figures.

A represents the upright posts of the stationary frame of the machine, and A the top or table resting on the same, and provided with a slightlyinclined front portion, A

B represents a stud or arbor projecting upwardly from the inclined portion A of the table, and adapted to receive the hub of the wheel or pulley to be provided with a keyseat.

B" is an extension of the arbor B, projecting downwardlyfrom the latter below the table. The arbor B and extension B are secured to the table A by a plate, B secured to the upper side of the table A by screws 1), and to which the extension B is secured by screws 1). The arbor B and extension B are arranged at right angles to the inclined portion A of the table, and stand therefore in an inclined position. a Y

21 represents a longitudinal groove formed in one side of the arbor B and extension B, and extending from end to end of the same.

0 represents the cutter, secured to the side of the reciprocating cutter-stock O, which moves up and down in the groove 6. The cutter is removably secured to the stock, so that it can be easily ground or replaced.

(2 represents the horizontal driving-shaft, supported in bearings cl in the lower part of the stationary frame, and D D represent a tight and loose pulley mounted on said shaft.

6 represents a horizontal counter-shaft, to which motion is transmitted from the shaft d by gear-wheels E E.

f is a crank or wrist pin secured to the wheel E, and F is a pitman or rod, whereby the crank-pin f is connected with the cutterstock O,so as to produce a reciprocating move ment in the latter. The upper part of the connecting-rod is bifurcated to straddle the cutter-stock O, and attached to a cross-head, F, which embraces the extension B, and is provided with two studs, f, with which the upper ends of the connecting-rod F engage, as represented in Fig. 4. The cross-head F is secured to the cntterstock by screws fiwhich serve also to secure to the cross-head Fa pan or inclined plate, f which deflects the chips and prevents them from falling on the working parts below. The arbor B and extension B are inclined to cause the chips to fall away from the working parts of the machine.

G represents a movable wedge, arranged in the groove 1) between the cutter-stock O and the back of the groove b and forming an adjustable backing or support for the cutterstock 0. The back of the groove b is made inclined to correspond with the taper of the wedge G, so that upon raising the latter the cutter-stock is moved outwardly or toward the work, and. upon lowering the wedge the cutter-stock C is moved backwardly or from the work, by the spring-pressed roller g.

' g represents a grooved roller, which bears against the front side of the cutter-stock and holds the latter against the wedge G. The roller 9 is journaled in a bifu reated bearing or bar, 9'', which slides in a guide, 9, secured to the under side of the table A.

h represents a spring which bears against a lug or shoulder on the bar 9, and presses the latter and the roller 9 toward the cutter-stock O. The spring h is coiled around a screwbolt, h, which works in a threaded lug, h depending from the table A and having a shoulder or flange, if, against which the spring rests. By adjusting the screw bolt h the pressure which the roller 9 exerts against the cutter-stock is regulated.

t represents a rack-bar, formed lengthwise on the back of the wedge G.

11 t" are longitudinal grooves formed in the sides of the wedge G parallel with its inclined back, and i i are screw-studs secured in the sides of the extension 13 and projecting into the grooves 4., thereby compelling the wedge G to move parallel with'the inclined back of the groove 1). The wedge G is moved upwardly after the cutter has cleared the work on its upward or return stroke and before it begins its downward or cutting stroke,whereby the cutter-stock and cutter are moved forwardly toward the work. This movement constitutes the feed movement of the cutter. After the cutter has cleared the work on its downward or cutting stroke and before it begins its upward or return stroke, the wedge G is moved downwardly, thereby allowing the cutter-stock andv cutter to be moved away from the work by the spring-pressed roller 9, and the wedge is held in this position during the upward or return stroke of the cutter. This movement of the parts constitutes the relief movement. The relief movement is less in distance than the feed movement, and just sufficient to permit the cutter to move freely upwardly without bearing against the work. These movements are effected by the following mechanism:

J represents a gear-wheel meshing with the .K K K are each provided with the same number of teeth; but the teeth in the several wheels are arranged to break joints, the teeth in the wheel K being arranged one-fourth of many teeth as either of the wheels K to K so that each toothof the wheel K corresponds in position with one of the teeth of the wheels K to L L L L are dctent-pawls adapted. to lock thewheels K K K K, respectively, against movement in one direction. These pawls are alternately raised and dropped, so that but one of these pawls stands at a time in the lower position in which it' will lock the corresponding wheel. These pawls are raised and dropped by four toothed wheels, M M M M which are secured to a horizontal shaft, m, arranged parallel with the shaft j, and supported in bearings m The wheels M to M are provided with an equal number of teeth; but the teeth on thewheel M are arranged one-fourth of the length of the pitch in rear of the teeth on the wheel M, those on the wheel M the same distance in rear of those on the wheel M, and those on the wheel M the same distance in rear of those on the wheel M M" is a ratchet-wheel secured to the wheel M, and containing four times as many teeth as either of the wheels M to M so that each tooth in the wheel M corresponds in position with one of the teeth in the wheels M to M.

l are projections formed on the lower sides of the pawls L to L", and adapted to drop into the spaces between the teeth of the wheels M to M. These teeth are so formed that when the projection l rests in the space between two teeth the pawl is in its lowest position, in which it looks the corresponding wheel, while when it rests on the back or end of a tooth the pawl is lifted out of engagement with the corresponding wheel. The space between two teeth of either of the wheels M to M is equal to about one-fourth of the pitch, so that when the wheel is turned through the length of the pitch in four equal successive movements the pawl of each wheel will be dropped during one movement and be raised during three successive movements of the same wheel.

n represents an actuatingpawl engaging with the wheel M, and pivoted to the lower end of a bar or link, 1/, which is hung on the shaft m. The pawl 11 is weighted, so as to rest with its edge against the wheel Mt.

0 is an actuating-pawl which engages with the wheel K, and which is pivoted to the lower end of a link or bar, 0, hung on the shaft n is a connecting bar or link, whereby the lower end of the link 91. is attached to the lower end of the link 0. The pivot o of the pawl 0 serves to connect the links a and 0. The opening a in the link a", through which the pivot 0* passes, is elongated to reduce the movement which the pawl a receives from the parts which actuate the pawl 0. The latter is in the form of an elbow or loell crank, and its lower arm, 0 is pivoted to an actuating-bar, P, which is provided at its opposite end with a stud or roller, 1), moving in an inclined slot, 1). The latter is formed in a bracket, p secured to the extension B.

0 is astop secured to the frame, so as to limit the backward movement of the link a; and o is a spring which presses the link or toward the stop 0 and compels the link n to follow the backward movement of the link 0.

It represents a rod or bar, pivoted at its upper end to the actuating-bar P, and extending downwardly on one side of the connect ing-rod F. The bracket p has the form of an open frame, through which one arm of the connectingrod and the bar R play, as represented in Fig. 2. The actuatingbar P con sists of two parallel pieces arranged on opposite sides of the outer bar of the bracket p and the upper end of the rod R is bifurcated and straddles the outer bar of the bracket 1), as represented in Fig. 2.

r is a longitudinal slot, formed in the lower portion of the bar It, and s is a horizontal stud, which is secured to the connectingrod F and projects through the slot 1" of the bar R.

T represents a weighted arm, secured to the shaft j, so as to turn the latter in the direction in which it causes the wedge G to move upwardly and give the feed to the cutter. If a smaller sweep of the weighted lever is desired, it may be mounted on a counter-shaft geared with the shaft j, so as to reduce the motion of the weight. A spring may of course be sub stituted for the weight T, if preferred.

In Figs. 1 and 2 the connecting-rod F, cutter-stock, and connecting parts are shown in their lowest positions. The wheels K to K and M to M and the pawls L to L" are in the positions represented in Fig. 10. The pawls L L L are raised to clear the wheels K K K, and the pawl L is dropped ready to arrest the backward movement of the wheel K, the

5 end of the pawl L standing the distance of two of the small teeth of the wheel K in rear of the nexttooth of the wheel K. The wheels K to K are held against backward movement by the pawl 0 engaging with the wheel K. As the connecting-rod F moves upwardly the stud 8 moves upwardly through the slot r without moving any of the parts. \Vhen the cutter has nearly reached the limit of its up ward stroke, the stud 8 reaches the upper end of the slot 0' and raises the bar P. The latter is moved backwardly by the roller 1) running in the inclined slot 12, thereby turning the pawl 0 on its pivot, so as to disengage it from the wheel K. The weight T now descends and turns the shaft j until the wheel K is arrested by the pawl L, thereby raising the wedge G and giving the feed to the cutter. The wheel K now rests against the pawl L. The pawls L L L are still elevated, as rep- The pawl ot' the cutter-stock the bolt .9 moves through the slot r without changing the posit-ion of any of the parts. hen the cutter has cleared the work on its downward stroke, the bolt 8 reaches the lower end of the slot r and moves the bars R and P downward. The bar P is at the same time moved forwardly by the roller 1) and slot p, whereby the pawl 0 is turned on its pivot to engage with the wheel K, and then moved forward, together with the pawl 11, whereby the wheels K and M :are each turned forwardly one tooth. This movement of the wheel M causes the pawl L" to drop and the pawl L to be elevated, the pawls L L" remaining elevated, as before. This position of the wheels and pawls is illustrated in Fig. 15. This forward movement of the wheel K the distance of one tooth turns the shaft j backwardly, and moves the wedge G downwardly part of the distance which it was moved upwardly for the feed, and constitutes the relief given to the cutter during its upward or return stroke. By this movement of the wheel K" the weight T is raised part of the distance which it descended during the feed movement. The parts remain in this position until the pawl 0 is again withdrawn from the wheel K at the end of the upward stroke of the cutter, when the shaft j is turned backwardly by the weight T until the wheel K is arrested by the pawl L". This movement moves the wedge upwardly for giving the feed to the cutter, as above described. It will be seen that each upward movement of the wedge G for feeding the cutter is twice as long as its downward movement for relieving the cutter, and that the entire movement of the wedge consists of alternate long upward feed movements and short downward relief movements. hen the cut is completed and the finished work re moved from the machine, the wedge is returned to its retracted position by raising the weight T to its highest position.

By employing a number of wheels, K to K side by side, each wheel can be provided with long teeth and turn only through a fraction of the pitch at a time. The pawls are successively dropped from right to leftthat is, from the pawl L to the pawl L-three of the pawls being always elevated and one dropped to limit the feed movement.

25 is an adjustable stop, secured to the top or table, and adapted to stop the forward movement of the weighted arm T when the keyseat has been cut to the desired depth. When the lower portion of the arm T strikes the stop t, the feed movement is arrested and the further movement of the machine does not move the cutter deeper into the work. The stud or rest 13 is made as large in diameter as the smallest bore of the hub which is to be placed on the same. The size of the rest E can be increased by applying an eccentric sleeve, U,

' the rest B by a countersunk set-screw, u. The

open side of the eccentric sleeve is placed in line-with the groove b in the rest B. The

cutter can be quickly thrown back from the work, when required, by simply depressing the lower arm of the weighted lever T.

. I claim as my invention- 1. The combination, with a rest adapted to receive the hub to be grooved, of a reciprocating cutter and a movable backing or support having alternately a long feed movement and a short relief movement for feeding and relieving the cutter, substantially as set forth.

2. The combination, with a reciprocating cutter, of a supporting wedge and mechanism, substantially as described, whereby said wedge is automatically moved alternately in opposite directions for feeding and relieving the cut ter, substantially as set forth.

3. The combination, with the grooved rest B B, of the reciprocating cutter-stock O, wedge Gr, provided with rack bar t, gear-wheel J, and the mechanism whereby said wheel is alternately turned in opposite directions, substantially as set forth.

4. The combination, with the reciprocating cutter-stock,,;of a movable backing or support capable of alternate adjustments for feeding and relieving the cutter and bearing against one side of the cutter-stock, and a yielding roller bearing against the opposite side of the cutter-stock, substantially as set forth.

5. The combination, with. the grooved rest B B, of the reciprocating cutter-st0ck O, wedge G, roller and yielding frame g, substantially as set forth.

6. The combination, with the reciprocating cutter-stock, adjustable backing, and its actuating-shaft j, of the ratchet-wheels K to K pawls L to L pawl-adjusting wheels M to M and the mechanism whereby the ratchet-wheels are alternately moved in opposite directions, substantially as set forth.

7. The combination, with the reciprocating cutter-stock, adjustable backing, and its actuating-shaft j, of the ratchet-wheels K to Kf", pawls L to L pawl-adj usting wheels M to M ratchet-wheels K and M and actuating-pawls o and a, substantially as set forth.

,8. The combination, with the reciprocating cutter-stock, adjustable backing, and its actuating-shaft j, of the ratchet-wheels K to K pawls L to L pawl-adjusting wheels M to lVP, ratchet-wheels K and M actuating-pawls o and a, bracket p, provided with inclined slot p, actuating-bar P, and the mechanism wherei by the actuating-bar is shifted at the end of cutter-stock, adjustable backing, and its actuating-shaft j, of the ratchet-wheels K to K pawls L to L", pawl-adjusting-wheels M to M ratchet-wheels K and M, actuating-pawls 0 and n. rod R, provided with slot 0", and pit man F, provided with stud s, substantially as set forth.

10. The combination, with the reciprocating f 'pawls L to L pawl-adj usting wheels M to M ratchet-wheels K and M, actuating-pawls 0 and n, and weighted arm T, substantially as set/forth.

11. The combination, with the reciprocating cutter-stock, adjustable backing, and its actuating-shaft j, of the aatchet-wheels K to K pawls L to L pawl-adjusting-wheelsM to M, ratchet-wheels K and M actuating-pawls o and a, links a 0, stop 0, and springd", substantially as set forth.

12. The combination, with the reciprocating cutter-stock, adjustable backing, and its actuating-sha-f j, of the ratchet-wheels K to K pawls L to L pawl-adjusting wheels M to M ratchet-wheels K and M, actuating-pawlso and a, weighted arm T, and stop t, substantially as set forth.

13. The combination, with the reciprocating cutter-stock, adjustable backing, and its actuating-shaft, of a ratchet-wheel, K having fine teeth, and ratchet-wheels K to K having coarse teeth secured together side by side, detent-pawls L to L actualingpawl 0, and the mechanism whereby one of said detent-pawls is placed in locking position when the other detent-pawls are raised, substantially as set forth.

1i. The combination, with the reciprocating cutter-stock, the adjustable support D and its actuating shaft, of ratchet-wheels K to K detent-pawls L to L, the mechanism whereby one of the deten't-pawls is placed in looking position at a time, the mechanism wherebythe ratchet-wheels are turned in one direction to relieve the cutter, and the mechanism wheretension B, substantially as set forth.

Witness my hand this 26th day of January, 1884:.

OHAUNGEY A. LANPHERE. Witnesses:

W. W. TALOOTT, R. J. NEALE.