US399705A

US399705A - Stone-planing machine

Info

Publication number: US399705A
Authority: US
Publication date: 1889-03-19
Anticipated expiration: 1906-03-19

Description

(No Model.) 2 Sheets-Sheet l. W.'E. SIDNELL.

` STONE PLANING MACHINE. No. 399,705. Patented Mar. 19, 1889.

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STONE PLANING MACHINE. No. 399,705. Patented Mar. 19, 1889.

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WILLIAM E. SIDNLL, OF NORWALK, OHIO.

STONE-PLANING MACHINE.

SPECIFICATION forming part of Letters Patent No. 399,705, dated March 19, 1889'.

Application led September 29, 1888. Serial No. 286,788. (No model.)

To @ZZ whom it may concern:

Be itknown that I, WILLIAM E. SIDNELL, of Norwalk, in lthe county of Huron and State of Ohio, have invented certain new and useful Improvements in Stone Planing Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use the same.

My invention relates to stone-planing machines in which the stone is mounted on a car, the latter being automatically fed through the machine while the cutting-tool is being reciprocated erosswise to the line of movement of the car. The cutting-tool is connected to a cross-head, and the latter is mounted on ways, the said ways being adjustable vertically to accommodate the thickness of stone being dressed. A channel-bar of considerable length and having an inclined channel or way is connected with the cross-head, in which inclined way operates the free end of a rock-arm that in turn and by means of suitable connecting devices actuates the feed mechanism, the arrangement being such that with the back-stroke of the cross-head the extreme slow feed movement is imparted to the car necessary in moving such heavy body. The cross-head, by means of a pitman7 is connected with and actuated by a horiZontally-reciprocating slide bar or plunger, the length of the pitnian being such that the parts work freely with the cross-head elevated orV depressed to the extreme of the vertical adjustment of the ways on which such cross-head reciprocates. The plunger is of peculiar construction, and is actuated by means of a rack and pinion, with adjustable dogs connected with the plunger for shifting the belt, accordingto the length of stroke desired.

My invention also relates to details of construction, hereinafter described, and pointed out in the claims.

In the accompanying drawings, Figure l is a side elevation, portions being broken away to show the construction and to reduce the size of the drawings. Fig. 2 is a plan, partly in section. Fig. 3 is an end elevation, partly in section. Fig. e is an elevation in transverse section of plunger and supportingway.

A represents a stone being dressed, and A the car on which the stone is mounted. As the machine is intended for dressing stone as large as can be shipped and handled, the car is usually ten or twelve feet (more or less) in width, and long enough to receive the longest stone that is likely to be wanted. The car travels on tracks a, and is fed, preferably, with two racks, a', arranged on either side of the car, these racks engaging gears B, the latter being mounted on shaft B', extending under the track. Any suitable gearing may be had for connecting this part of the feed mechanism with ratchet wheel O-for instance, as shown, where pinion O is mounted on the same shaft with the ratchet-wheel, such pinion engaging one of the gears B.

D D are standards similar in form to those commonly employed on large metal-planers. These standards in pairs are arranged on either side of the track far enough apart to allow the cars to pass between them. Apair of horizontal parallel ways, E, extend from one pair of standards to the other, these ways being connected at the ends by yokes E', and connected with these yokes are screw-rods e, the latter extending, respectively, through the yokes D of the standards. Beveled pinions F are mounted on these screw-rods, and these pinions, being screw-threaded internally, serve as nuts. These pinions engage pinions F', mounted on shaft f, withcranks f for elevating or depressing the ways, the screws and shifting vmechanism of these ways being well known in connection with metalplaners.

Vays E are provided with bolts e the latter operating in slots d of the standards, these bolts being tightened after the ways have been adjusted vertically.4 Upon ways E reciprocates the cross-head G, the latter being connected by pitman G with a sliding' bar or plunger, H. The cross-head is provided with tilting tool-stock G.2 and screw g, for elevating or depressing the tool-stock, and arranged after the manner of metal-planers, whereby tool g is made to cut with the forward movement of the cross-head, and is tilted forward' and rides back over thework with the rear- IOO ward movement of the cross-head. Connected with the cross-head is a bar, I, of considerable length, this bar having an inclined channel or way on the one side thereof.

J is a rock-shaft, the same being journaled in brackets E2, connected on one side of ways E. On rock-shaft J are mounted rock-arms J and J2, extending towardthe bar I, and rock-arm J 3, extending, usually, in the oppo site direction, the latter rock-arm being connected by rod K with pawl-lever L. This lever is of the bell-crank variety, fulcrumcd at the elbow, and has attached pawl L for engaging ratchet-wheel C for feeding the car. Lever L has a slot, Z, in which wrist Z may be adjusted lengthwise of the slot, and arm J 3 has a series of holes, j, in which wrist j may be adj usted, and both of which slots and holes may be utilized in regulating the feed. Arms J and J 2 are adjustable lengthwise of the shaft J, only one of these arms being used at a time in feeding. If the cross-head is making short strokes, as would be the casein planing a stone of moderate width, arm J is used. For long strokes of the cross-head arm J is used. These arms, at the free ends thereof, have, respectively, a longitudinal bore in which lits plug M. The plug has a rounded outer end or head adapted to operate in 'way t'. This plug is inserted in either arm, J or J 2, that may be wanted for feeding, the other arm meanwhile moving idly. The car is necessarily heavy, and is likely to sustain a load of many tons weight, and the feeding of such heavy bodies must be done slowly. The long bar I and the slight grade of channel t' are admirably adapted to such slow feeding. During the return movement of the cross-head the head of plug M enters the upper end of channel i', and the plug in traveling in this channel is gradually depressed, thereby feeding the car very slowly. IV ith the forward movement of the cross-head, the feed mechanism is reversed, the pawl snubbing back over the ratchet-wheel. If the stroke of the cross-head is so long that plug lli is drawn out of the channel t', thel rock-arm remains stationary, and plug M consequently remains in position to again enter channel 'z on the return-stroke of the cross-head.

Pitman G is so long that in raising or lowering the ways E to accommodate different thicknesses rof stone the angularity of the pitman does not affect the free working of the machine. Slide bar or plunger H is also long enough to give the maximum stroke. This plunger is cylindrical, with a flatted upper side, on which latter is attached the rack I'I for engaging pinion N, the latter being mounted on shaft N, as is also the master-Wheel N2. The latter engages pinion n on the driving-shaft n', the latter being provided with necessary band-wheels, (not shown) for reversing the motion. On one side of rack H the plunger is provided with a longitudinal slot, h, said slot having undercut walls, as shown. Dogs 71. are adjusted in this slot to engage the belt-shifting mechanism (not shown) in reversing the mot-ion at the end of the stroke. The reverse mechanism may be substantially the same as commonly used on metal-planers, and is there- :fore not shown, except the dogs aforesaid, and these are of course adjusted lengthwise of the slot to give the different length of stroke. The reverse mechanism, without further description, will be readily understood by any machinist or person likely to engage in building this class of mechanism. The way O, in which plunger II operates, 'is bored to nicely iit the plunger. There are several advantages of this peculiar arrangement of plunger and way, among which may be mentioned the large wearing-surface, easily kept lubricated, and the self-adj ustment of the plunger on its axis to correspond with the bearings of the pitman, by means of which the parts always work freely.

Vith this machine stones as large as can practically be handled may be dressed; or a series of smaller stones of about the same thickness may be placed on the car and dressed at one operation.

I have reduced my invention to practice, and it is considered a success in every particular.

lVhat I claim is* l. In a stone-planing machine, the combination, with a car and feed mechanism substantially as indicated, and ways located above and orosswise of the car and having vertical adjustment, of a cross-head bearing cutting tools, said cross-head being mounted on the ways, a plunger operating horizontally and at right angles to the movement of the car, and a pitman connecting the plunger and cross-head for operating the latter at different elevations, substantially as set forth.

2. The combination, with horizontally-re ciprocating plunger, the latter being cylindrical and having a 'liatted upper side, said plunger being connected by pitman with the cross-head of the machine, substantially as indicated, of corresponding cylindrical ways for supporting said plunger, whereby the plunger is self-adjusted on its axis, substantially as set forth.

3. The combination, with cylindrical plunger having a atted upper side, a corresponding way for supporting such plunger, of rack and dog mounted on the upper side of the plunger, the latter having a longitudinal groove for securing the dog, the latter being adjustable lengthwise of the groove to give the different length of stroke, substantially as set forth.

4. In a stone-planing machine, the combination, with a rock-shaft and attached rockarm and connecting mechanism, substantially as indicated, for feeding the car by the action of such rock-arm, of reciprocating cross-head and inclined way connected with the crosshead for actuating such feed mechanism, substantially as set forth.

IOO

IIO

Io arms, said plug having a head adapted to operate in the inclined way "of the cross-head, substantially as set forth.

In testimony whereof I sign this specification, in the presence of two Witnesses, this 15th day of December, 1887.

WILLIAM E. SIDNELL.

Witnesses:

CHAs. H. DORER, ALBERT E. LYNCH.