US272192A - Metal-planing machine - Google Patents

Description

(No ModelJ' 2 Sheets-Sheet 2.

' A. B. BEAN.

METAL PLANING MACHINE.

Patented Feb. 13,1883.

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N. PETERS Pham-Lithograph, wanhinglun. D, C.

UNITED STATES PATENT OEEIEE.

ALBERT B. BEAN, OF NEW HAVEN, CONNECTICUT.

METAL-PLANING MACHINE.

SPECIFICATION forming part of Letters Patent No. 272,192, dated February 13, 1883.

Application tiled September 4. 1882. (No model.)

lFigs. 2, 3, 4, 5, 6, and 7, detached views to illustrate thefirst part of the invention Fig. 8, a modification; Fig.,9, opposite side view of the machine; Figs. l0, l1, and 12, detached lviews to illustrate'the second part of the in- 4 vention.

This invention relates to an improvement in machines for planing iron, and has for its object, first, a device by which the feed of the machinejmay be Varied or adjusted while in operation; and, second, to work the leadingscrews which raise and lower the cross-head directly from the driving-shaft of the machine, thereby bringing within the machine itself the neans of applying power to drive the crosshead leading-screws; and in such devices as hereinafter described, and more particularly recited in the claims, my invention consists.'

A represents thevbed of the machine; B', the

uprights; 0,-the cross-head, arranged to slide thereon in the usual manner; D, the drivingpulleys on the driving-shaft E, by which,

vthrough intermediate gearing, power is commuuicated to the platen of the 'machine to move it longitudinally on the bed, and in connection with which is a yreversing mechanism to reverse the power, so as to make the movement of the platen a reciprocating movement, all in the usual manner, and too well known to require particular description in this specication.

F is an intermediate shaft, to which rotation is imparted by-the driving mechanism, and which reverses according to the direction the platen is to be moved. Onthis shaft F, and outside the bed, a disk, G, is made fast, so as to revolvewith the shaft. This disk, as seen in Figs. 6 and 7, is constructed with a hub on l each side, which it is firmly secured to the shaft.

Upon the insideof the disk G is a second disk, H, arranged loosely on the huh F, without positive connection therewith, so that the hub may revolve freely independently of the disk H.

Ou the outside of the disk G is another disk,

I. This disk I, like the disk H, is arrangedupon the hub of the central disk, G, the two disks H I presenting their innerfaces to the corresponding faces ofthe central disk,G, and the 4two disks H I are bolted together outside the disk Gr, so as to be;` clamped upon that central disk and/produce frictional contact between the central disk and the outsidedisks, so that when the outside disks are free the friction of the inner disk will communicate to the outer disks a rotation corresponding to the rotation of the inner disk; but ifthe outer disks be held, then the inner disk will revolve with frictioual contact with the outer disks.

The inner disk may present a plain metal surface to the outer disks; but I prefer to arrange in. the faces ofthe central disk frictionblocks a a, more or less in number. These may be made of wood, leather, or other nonmetallic material.

On the outside of the disk I is adiametrical guide, K, on which is a slide, b, made adjustable thereon, so that the said slide may be set to a greater or lessdistance from the center, and from this slide a connecting-rod, L, engages a vertical rack, M, which communicates ,with the pinion of the transverse leading-screw in the cross head iu the usual manner for planer-feeds, so that a partial rotation of the disk I in one direction will raise the rack and the return will draw the rack downward. The movement in one directionimparts corresponding movement to the leading-screw and transverse feed to the cross-head in the other direction, (because of the usual pawl and ratchet.) The pinion and rack impart no movement to the leading-screw. This device is well known.

The movement or rotation of the disk I is imparted by the shaft F through the disk G.

When it moves iu one direction it turns the disk I accordingly, and in the opposite direction reverses that movement. The movement ot' the shaft F is continuous throughout the travel of the platen, whereas the feed is only required at one extreme. Hence the rotation of the disk must occur only at the extreme movement of the platen.

To prevent the rotation of thedisk I beyond a certain required limit, a lug, d. is made fast upon the inside 0f the disk H, which, when rotated in one direction, will strikeacorresponding shoulder, e, ou the bed, as seen in Fig. 3. A second lug,f, is also attached to the inside ofthe disk H, to stop it in the opposite direction. Hence the movement of the disks will be limited by the two points where the said lugs df strike. rlhese might he two fixed and determined'pointssay like the shoulder e so that the disk I, turned by frictional contact in one direction until the lug d shall be. stopped by the shoulder e, will remain stationary until the movement ot' the platen is reversed, which will correspondingly reverse the direction of the shaft F and the disk G. Then the disk I will be turned in the opposite direction until the lugf brings up against its stop. Thereit will be held until the reverse action at the next extreme movement of the platen. The rotation ofthe disk is communicated to the vertical rack M, and thence to the feeding-screw, in the usual manner.

A positive, fixed, and inadjustable feed cannot be practically used. The amount of feed is usually adjusted by the distance of the slide b from the center of motion; but such adjustment cannot be made when the machine is at work. lt frequently occurs that a gradual variation in the feed is required during the work` which in the usual construction would necessitate stopping the machine at each extreme movement; or whenever the extent of feed is required to be varied the machine must be stopped for so (loing. To avoid this stopping of the machine and permit the adjustment of the feed at any time and while the machine is running, l hang a toothed segment, N, loosely upon the shaft F, and to the bed of the machine or in some rigid position I arrange a worm-gear, P, on a shaft, R., the said worm-gear working into the toothed segment N,as seen in Fig.2,so that byturningthe shaft It the segment will be correspondinglyturned on itscenter. Ou thissegmentlformashoulder, g, in thepath ofthe lugf, so that when the disk 1 is turned in one direction the lugfwill bring upagainst theshouldergand arresttherotation ot' the disk I at that point. The shoulder e, where the lng d brings up in one direction, heilig fixed, the extent of movement of the disk is between that lixed shoulder e and the shoulder g on the segmentN. Hence it' the segment be turned in one direction it will shorten the distance between it andthe shoulder e, and correspondingly shorten the extent of rotation for the disk; but if the segment he turned in the opposite direction it ill correspondingly increase the extent of movement of the disk I.

The shaft R has a hand-wheel or other suitable device, S, applied to it, by which it may be convenienti yturned by the operator. When the machine is in operation the workman may at any time turn the shaft R, and thereby turn the segment N. to bring the shoulderg nearer to or farther from the. opposite stop, c, according as his work 'may require a less or greater amount of feed. In practice I arrange the slide b so as to give about a medium amount of feed, and then as the machine is working vary that by turning the segment as may be required to increase or decrease the extent of feed. By this arrangement the feed for the machine is entirely under the control ot' the workman, and without. stopping the machine he may vary that feed to any desirable extent, either greater or less.

The connecting-rod L may be xedupon a crank-pin on the disk I without the interposition ofthe slide b and its guido K; but I prefer to employ the slide with the diametrical guide on the disk.

The l'rictional device for communicating rotation to the disk may be employed without the adjustable stop or shoulder g-that is to say, that shoulder or stop may be stationary, like the shoulder e, and theadjustmentbegiren by moving the slide b; or the stop may be operated by other mechanism than through the segment M--as, tbrillnstration, see Fig. 8. The segment-shaped slide may be arr inged to move in a path of which the shaft F is the center,

so that its end will act as the shoulder g, and this slide, moved by hand, may be set with suitable set-screws to hold it at the desired position.

Instead of employing the worm I? to operate the segment, it may be otherwise turned-as, for instance, by a lever in couvenientposition for the operator to move.

Instead of constructingthediskHwith two lugs,df, it will be understood that a single lug may answer the purpose, opposite faces striking.r corresponding stops.

It frequently occurs in the use of this class of machines that the cross-head is required to be moved up and down to a considerable extent, and in large machines poweris necessary to practically so move the head. To thus move the head vertical leading-screws are arranged, one in each upright, connected by a shaft across the top with bevel-gears working onto the corresponding bevel-gears on the upperend of the leading-screws, and on this transverse shaft a pulley is applied, to which power is communicated from the counter-shaft, and brought into action by a common belt-shipper. This necessitates shafting independent of the machine, and the machine does not carry in itself the means for applying the power to the transverse shaft for raising and lowering the cross-head. To combine such mechanism in the machine itself is the second object of my invention, and is illustrated in Figs. 9, 10,11, and l2. Fig. 9 represents the reverse side of the machine from that seen in Fig.1, there be- IOO ` 'move the platenfand the one a: disengages ,splined to tite shaft E and revolves with it.

. the pulley h, thus disconnecting the power ing a driving-pulley on each end of the main shaft E, T representing the driving-pulley on this side of the machine. Loose on this driving-shaft E is a pulley, h, from which a belt leads to a corresponding pulley', i, at the top, which imparts rotation to a pinion, Z, waking into a gear. m, on the transverse shaft n, which communicates motion tothe vertical screws 0 by the usual bevel-gears t', as seen in Fig.A 12.

On the shaft E is the loose part t ofa clutch. It is here represented -as attached to or made a fpart of the pinion w, which communicates the drivingpower of the shaft to the intermediate shafts for driving the-platen. u is the corresponding part ofthe clutch, which is Outside-the bearing of the shaft, and near the pulley It, is a sliding clutch, splined to the shaft, so as to revolve with it, like the part n of theot'her clutch, and so as to be moved longitudinally on the shaft. In an annular groove in the part u an arm, 3, extends forward from the slide 4 on a horizontal guide, 5. O n the same guide is a second slide, 6, carrying an arm, 7, which works in an annular groove in the clutch vBetween the two slides 4 and (i is a vertical lever, 7, hung at its center, one end connected by a rod, 8, with the slide 4, and the other by a corresponding rod, 9, to the slide 6, and from this lever 7 a rod, 10, connects with a bell-crank lever, 11, and so that by turning the bell-crank lever in one direction it will correspondingly turn the 1ever 7, and in so turning the lever 7 will throw the two slides 4 and V6 away from each other, as seen in Figs. I10 and l1. This movement disconnects the clutch Lt from the pinion w, and carries the part into connection with from the platen and applying it tothe pulley h, which will in-its turn drive the vertical leading-screws and move the cross-head according to the direction in which the driving-shaft is turned, (up or downg) but if the lever 7 be turned in the opposite direction, then, the clutches u and x are d rawn toward each other; the one u then engages with the pinion 'w to from the pulley Il; It never occurs that this up and down movement of the cross-head is required when the platen is moving, andas more'revolutions of the shaft may berequired to give the desired movement to the cross-head than could be permitted in one direction were the platen engaged,it is necessary that the driving mechanism for the platen shall be disengaged from the shaft when the cross-head is thus being moved up or down.

A hand-lever, 12, is arranged upon the working side of the machine (see Fig. 1) in connection with the lever 11, by which the operator may conveniently connect or disconnect the power.

An intermediate position of the two clutches u and :r may leave the machine free from the effect of either clutchthat is, the shaft may continueits revolution withoutimparting movement to either platen or cross-head.

' 1. In an iron-planer, the herein-described fiictional disk for imparting feed to the toolstock upon the cross-head, consisting of the disk G,txed to theshaft` and constructed with recesses filled with non-metallic blocks a c, with thedisks I H,respectively, upon opposite sides y ofthe disk Gr, the said two disks I H loose upon the shaft and brought int-o frictional contact Y with the said blocks, substantially as described.

2. In an iron-planer, the combination of a disk loose on the shaft, hut engaging therewith by frictional contact, the said disk provided with lugs, a shoulder against which the lug Will stop when turned in 0nedirection,aseg

ment ming upon the shaft and carrying astopin the path of the lug on the disk, and mechlanism, substantially such as described, to itnpart to said segmenta rotative movement, with mechanism, substantially such as de-cribed, connecting said disk with the cross-head ofthe machine, substantially as describe-d.

3. In an-iron`planer, the combination of a disk loose on the shaft, but engaging therewith by frictional contact, the said disk provided with lugs, a shoulder against which the lug` will strike when turned in one direction, a toothed segment hung upon the shaft and carrying a stop in the path of the lug on thedisk',

a shaft carrying a worin, working into said seg- Y ment, and by which it may be adjusted, with mechanism, substantially such as described,

IOO

connecting said disk with the cross-head of the machine, substantially as described.

4. In an iron-planer, the combination of a pulley on the driving-shaft, connected to thc transverse shaft driving a vertical leadingscrew for the cross-head, a clutch on the driving-shaft to connect or disconnectit with said pulley, and a second clutch to connect or disconnegt the shaft from the mechanism for mov- 'iug the platen, and mechanism, substantially such as described, between the said two clutches to disconnect the one when the other is 'connected, and vice versa, substantially as described.

ALBERT B. BEAN. Witnesses:

J oHN E. EARLE,

LILLIAN D. KELSEY.

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