US69282A - Improved machine for quarrying stone - Google Patents

Description

GEORGEJ. WARDWEIIL, OF RUTLANI), VERMONT.

Letters .Patent No. 69,282, tinted Septcmlw 24, 1867.

lIMPROVBD'MACHINE FOR QUARRYING SIGNE.

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TO ALL WHOM I'l MAY CONCERN :V

Be it known that I, GEORGE J. WAnnwiiLL, et' Rutland, in the county of Rutland, and State of Vermont, have invented certain new and useful improvements in Machinery for Quarrying Stone; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, making part of this specification, in which- Figure l, sheet 1, is au elevation ofthe right-hand side of the improved machine.

Figure 2 is an elevation ofthe left-hand side ofthe machine.

.Figure 3, sheet 2, is a top view of the machine.

Figure -l is a section through the machine, taken in the horizontal plane indicated by the line x min iig. 1.

Figure 5, sheet 3, is a front elevation of the machine.

Figure 6 is a transverse section, taken through thc machine in the vertical plane indicated by y y in tig. 3'.-

Figurc 7 is an enlarged view in detail, showing the manner of connecting the chisel-stocks to the vibrat- A ing levers.

Figures 8 and 9 show the manner of applying thc chiscls or bits to solid and sectional chisel-stocks.

Similar letters of reference indicate corresponding parts in the several figures.

This invention ,relates to certain novel improvements on the stone-cutting-machinery which is described in my Letters Patent, numbered respectively 40,584, 51,271, and 51,272, and also in my reissues, numbered 2,087, and 2,088, and designed for cutting vertical or inclined channels or kerfs in the beds of quarries preparatory to cutting under and separating the blocks of stone. Vin said patents a machine is described which isoperated by a steam engine located behind the cutter-carrying carriage or frame, and moving upon the same track therewith. Under some circumstances this arrangement ot' the driving power and the cutting mechanism upon different frames is objectionable, particularly for want of coinpactncss and portability, where a quarry is small and economy in working it is desired. 'lo remedy this objection, in a measure, the steam engine and boiler have been supported at one end upon the frame which carries the feeding andv cutting mechanism, and at the other end upon a separate frame. 'lhis plan renders the machine more compact than the one described by me in the aforementioned Letters Iatent, but it does not overcomcthe obiection to having two independent sustaining frames.

'lhe object of my invention is `to support the steam-boiler, the engine, the stone-cutting devices, and the feed mechanism upon a single frame or carriage, which is mounted upon and adapted to travel on a rail track; said frame or carriage heilig yconstructed in a rigid and substantial manner, so as to aiford a firm, unyielding bed or support for the said machinery, as will be hereinafter described.

To enable others skilled in the art to understand my invention, I will describe its construction and operation.;

In the accompanying drawings, A A represent the'parallcl sleepers of the track, upon which the machine which I am about to describe is caused to move backward and forward. These sleepers are firmly connected together by cross-ties A, which also serve as braces for preserving the parallelism of the sleepers, and' preventing lateral displacement thereof. 0n the outside of the sleepers A A, rails a a are firmly secured, so that their upper surfaces project above the surfaces of the sleepers, and serve as guides for the machine during its reciprocating movements. '.lhe outer vertical surfaces of the said rails have spur-teeth formed on them, as shown at al, with which two pinion spur-wheels i of engage. The track thus constructed is firmly secured upon the quarry-bed at the point desired to cut er channel the same, and the length of the track will bc regulated by the length of the channelswhich it is desired to cut. The pinion spur-wheels al' at are keyed on the lower ends of vertical shafts b b, which are arranged on the outside of the frame or carriage B, as shown in tig. 6, and which have their bearings in journal-boxes b Zi projecting from the sides of frame I3, and also in capplates Bl B, which are bolted iirmly upon this frame., ['pon the upper ends of the vertical shafts bb bevelled spur-wheels b2 b2 are keyed, which engage with and are driven by bevel pinion spur-wheels b3 b3 that are keyed on a horizontal transverse shaft C. 'lhis shaft C has its end bearings .in the cap-plates BI B1, and carries the vibrating feed-arm, the feed-spur, and brake, as will be hereinafter described.` The 'frame or carriage B is constructed of plates of iron firmly bolted together, and braced so as to aiford the required strength and rigidity to sustain the several parts employed Ain the work of channelling stone. This frame should be made suiiciently strong to admit of its being moved about bodily without straining or deranging the mechanism upon it. l pon both sides of the frame or carriage B offsets B2 B2 are applied, which form housings for the spur-wheels above described, and also support-s for the standards of the chisel-stocks, as will be hereinafter described. lhe rear part of the fralne or carriage B is sustained upon the rails aa by means of flanged shoes or slides v a, which embrace said rails and prevent lateral displacement of the carriage at this point. The front ead nl' the earv ringe is sustained upon the rails a a by means of flanged wheels a a, which prevent lateral displacement at this point. In front of the fccd-shaft C is the engine-Shaft E, through which motion is communicated to the channelling devices and the feed mechanism. This shaft E extends transversely across the top of frame or carriage B, and is supported upon pillow-blocks cc, which are firmly bolted upon the longitudinal sides ol' frame or carriage B, and also upon the offsets B2 thereof. '.lo the crank of shaft E a pitman-rod. d, is attached` thc rear end of which is pivoted to the piston-rod (ZI ofthe engine F. The slide-valve of this cngine'receives its movements from the shaft E, through the medium of an eccentric, di, und pitinan-rod, di". 'lhe pump fl. which is on top of the steam-cylinder of the engine, is operated by a rod connecting with the cross-head of the pitston-rod all, as shown in figs. 2 and 3. The engine may be constructed in the manner represented in the drawings, or in any other suitable manner. The steam-boiler is constructed somewhat like that of a locomotive vor portable steam engine. 'Ihe tire-box G is firmly secured centrally between the longitudinal sides of the carriage B, and the forward end of the cylindrical boiler Gi1 is sustained by striding braces G2, which are rigidly bolted to the said carriage, as shown in the drawings, sheets l andS. Near the ends ofthe main driving-simil E, cams or toesff are keyed upon it in such manner as to operate alternately upon the shortest arms of me'nt levers H, and thus give a vibrating motion to them. These levers vibrate in vertical planes, and have their fulcra in the pillow-blocks c c. Their longest arms are connected by means of lifting and pulling-down ropes or chains c c to the chisel-carrying blades. I I, so as to reciprocate these blades vertically in their standard-guides J J. The front ends o1' segment faces of said levers II are grooved, so as to receive and keep in place the ropes cr chains el chene of which latter is carried upward and attached to an eye, c2, upon the chisel-stock, and the other is carried downward and attached to the lower clamp of the chisel-stock. 'Ihe ropes or chains should be attached to their respective stocks I at such points as will cause the levers II to lift and pull down these stocks without any tendency to tilt them or cause them to bind in their guides; therefore. I locate the said points of attachment in the middle of the` width of the stocks. The eyes c2 are removable, aud

they can be attached nearer to or further from thc upper ends of their respective stocks, :ts circumstances may' require, a number of holes being made through the stocks for this purpose. The clamps D, to which the liftiug ropes are attached, are also movable, so as to be capable of attachment at different points to their stocks. The chisel-carrying stocks I I may be made solid, as shown -in figs. 2 and 9, or they may be made of longitudinal sections, clamped together in any suitable manner. These stocks are guided and kept in place in their vertical reciprocating movements by means of the standard-guides .I J, which havel shouldered tenons formed on their inner parallel faces tba-t fit into corresponding grooves formed in the clamps D. D, which are applied to the stocks I, as shown in fig. 3. The standard-guidcs J, which are on the inner sides of the chisel-stocks, arc secured rigidly at their lower ends to oscillating boxes K2, which arc sustained by forward and rear trunnions, bearing upon the frame or carriage outside of the rail track. Ihe upper ends of said guides'J have horizontal yokes K3 secured to them, as shown in the drawings. The outer standard-guides.d'l arc secured to the outer side plates of thc boxes-K2, which plates are hinged, as shown in the drawings, so as to allow the said standards to be swung open for removing the chisel-carrying stocks, as shown in tig. 2. Illic upper parts of the standardguidesdl arc hingcdito the yokes K by means et' horizontal bars K4. The standard-guides are all constructed se as to be reversible, that is to say, they can be turned end for end by detaehing them from their oscillating boxes andthe yolcs K3, for the purpose of preventing unequal wear of thc clamps upon the guiding tenons. 'Ihe standard-guides are held firmly in the desired position by means'of transverse braces K K", which are connected by `joints to the ribs on the inner standards YJ, and by means of nuts to a. plate, K, upon thc boiler G. By turning the nuts ou the ends of'` the rods the standard-guides may be adjusted and set at any required angle with respect to the frame or carriage to which they are applied, so that should the carriage incline, the chiselstocks can be set to work in vertical planes. The standard-guidesare also braced by inclined rods L Ii, which are secured to the inner standards, and which extend backwards and are secured to the carriage frame, as shown vin gs. 1 and 2. The feed-shaft C has a toothed whech-g, keyed' to it, into the teeth oflwhich a reversible pawl or dog, 71, engages. '.lhis pawl is pivoted to an arm, g, which is applied so as to vibrate looselyvupon the shaft C, and which receives its vibrations from an eccentric, N, upon the crank-shaft E, through the medium of a connecting-rod, N', as shown in figs. 1 and 3; The eccentric N is constructed in such manner, and so secured to the balance-wheel P, that it can be adjusted for shortening or lengthening thc strokes of thc inter-arm y', so as to increase or diminish the forward or backward movements of the machine upon its track. (Lin the inside of the vibrating'arm g, and keyed ou the feed-shaft C, is a brake-wheel, M, having an annular groove formed in its periphery. This brake-wheel is acted upon by a weight, S, upon one end'of a spring-brake, S', which is secured at its other end to the frame or carriage B in front of the shaft C, as shown in figs. l and 'lhe weight S is adjustable upon the brake-arm for increasing or diminishing the friction or resistance offered to the rotation of shaft C, at pleasure., The pawl 7i is pivoted to the vibrating fecd-arm in such manner that' it can be reversed at pleasure, so as to cause the frame or carriage to move forward or backward without reversing or stopping the engine or its shaft E.

I am aware that it is not new to sustain-stone-channel1ing devices upon a truck which also sustains one end of a steam-boiler, the opposite cnd of such boiler being sustained upon a separate and independent truck', und therefore l lay no claim to such an arrangement.

In the operation of the machine which I have above described, Ythe balance-wheel P upon the crank-shaft E will equalize the movements of the feeding :ind chaunelling mechanism, andV also the engine, without in my manner interfering with the arrangement of the cutters in close proximity to the walls ofA the` quarry. Suvh wheel being arranged between the longitudinal sides o f the carriage will also operate with less strain upon its shaft than would be the Case if it were applied outside ofthe carriage upon one extreme end oi' this shaft. The cutting devices may be constructed as described in my Letters Patent aforementioned, and these vcutters with their stocks may be clamped and guided as therein shown.

What I claim as new, and desire te secure by Letters Patent, is-

Arranging the steam-boiler, the steam engine, the feeding mechanism, and the eliannelling devices, :ill upon n single carriage, B, substantially as described.

GEORGE J. WARDWELL.

Witnesses:

GEO. Ekeren, C. CLARK.

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