US111206A - Improvement in machines for cutting and dressing stone - Google Patents

Description

4and combination of the parts that produce the which freely slides between posts a a, and

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AENr JACOB HEDRIOK, VILLIAM TASH, AND HENRY KREIDLER, OF YORK, PA.

IMPROVEMENT IN' MACHINES For To cir/ZZ whom L't71zctyconccrn:

Be it known that we, JACOB HEDRIGK, WIL- LIAM TAsH, and HENRY KREIDLER, of York, in the county of York, in the State of Pennsylvania, have jointly invented certain Improvements in Machines for Cutting and Dressing Stones, and especially for dressing the faces of millstones,of which the following is a specification.

rlhe object of our invention is to produce a machine for cutting stone in which the cutting-tools can have a greater variety of changes in position with relation to the supportingframe, the driving-power, and the stone being cut, and without any change in the position of the supporting-frame itself than has ever before been used within our knowledge; and it consists in the construction, arrangement,

changes and movements necessary to carry out the objects of the invention and produce the result required. i

In the drawings, Figure l is a front view of the machine. Fig. 2 is a top plan view. Fig. 3 is a side View, and` Fig. 4 is a longitudinal sectional view.

A represents the main supporting-frame, having posts a a a, and A is a platform or seat insertedin the top of frame A. rlhe supporting-frame A has at its forward or front side a bearing-beam, A2, the top of which is raised a sufficient height above the bottom of the frame A to support and guide some of the operating parts of the machine, and at the eX- treme ends of beam A2 are lugs or stops l l.

Upon the supporting-base of frame A are two posts, aa. These posts aa'have a plate7 a2, at their top ends, and made fastthereto, and through the center of its length is a hole to receive a temper-screw, as, and which freely turns in thehole in said plate ai. The temperscrew @with a screw-thread on its lowerend, after passing through plate a2, enters into a screw-hole in the center of a sliding beam, at, is adjusted up or down by means of the temperscrew a3, which has a collar fast to the rod parts of the screw above and resting upon plate a2, so that by turning the temper-screw the beam a is raised or lowered, as desired.

Standing upright upon the base of the supporting-frame A is shaft A3, which has placed upon it at proper heights pulleys A4A and A5 CUTTING AND DRESSING STONE.

and sliding sleeve-clutch a5. Pulley A4 is the driving-pulley freely turning upon shaft A3,

and having clutch or driving pins on the upper edge ofthe eye of the pulley Af. Sliding sleeve-clutch a5 has clutch or driving pins on its lower end and freely slides up or down on shaft A3, but does not revolve thereon, because it is prevented by having a groove cut in the eye that fits upon a feather fast in the shaft A3,' but when the sliding sleeve is let down the clutch or driving pins on its lower side engage with the clutch or driving pins on the upper edge of the revolving pulley Af, which gives motion to and revolves shaft Anl by means of a belt or other convenient way'of giving such motion from the driving-power. Sliding clntch a5 is thrown into lor out of contact with pulley A* by means of the forked lever a, which has its fulcrum at aT on the rear post, a, of frame A. Pulley A5 is also firmly attached to said shaft A3, and communicates motion to the operating parts of the machine through belt A6. i

Standing upon and revolving in cross-girt as is shaft a9, having arms am on opposite or nearly opposite sides of said shaft a9. On each side of shaft a9, and sliding upon arms klo, are sliding rods au,which carry pulleys am. |These pulleys revolve freely upon the sliding rods au, and are surrounded by belt A6, as seen in Figs. 2, 3, and 4, and are used to keep the belt AG in proper tension'upon the drivingpulleys A5 and A7 by the spiral spring au around arms al forcing the sliding rods from the shaft a and the pulleys au hard against the belt A, and always lkeeping it in the right strain to prevent slipping. Shaft a9 has attached near its upper end a coil-spring, a, which causes the shaft a" and pulleys ai, to be forced to bear against the belt AG. The shaft a is held at any time in rigid position by means of the spring-catch a15 catching into teeth am on the under side of the platform or top part of frame A, as seen in Figs. l and 4.

B B represent the frame which contains` and supports'the moving operating parts and the acting cutting-chisels of the machine.

B B are pivoted guiding and sustaining arms, pivoted at b to the under side of frame B by means of the hand screw-rods B2. These inclined guides and sustaining-arms B rest upon beam A2 near their forward ends, and pass between plate a2 and adjustable beam at on frame A, and are guided in their reciprocations and oscillations and prevented from getting out of place by the guide-pins 1 l at the extreme ends of beam A, lugs on the under side of plate c2, and pins 2 and 3 ou the upper side of said guide-arms, as when frame B, with the guide-arms B B, is forced back, the outside of arms B strike against pins 1 l, pins 2 2 strike against plate c2 on its front side and prevent its further progress in that direction, and when frame B is forced forward `pins 3 3 will strike against the plate a2 on its rear side and stop its further advance in a forward direction, while the lugs on the under side of plate c2 prevent the arms from sliding laterally too far toward each other, and the posts a will keep them from spreading outward beyond control.

Equidistant from the center line from front to rear of the machine, and between the front and the platform or seat A, are erected two perpendicular posts, which form a part of the movable frame B. Between these two posts, and supported by horizontal girts b b', is an upright shaft, B2, working in proper journalboxes in or attached to said girts b b. Near the lower end of shaft B2, and fast thereon, is pulley A7, by which the shaft B2 is revolved. Higher up on shaft B2, and fast thereon, is

Vgear-wheel b2, which gears into gear-wheel b on horizontal shaft b4, which is journaled in bearings on frame B, and has toothed gearwheel C fast on its outer end and outside of the side of frame B. At the top end of shaft Blz is gear-wheel b5, gearing into gear-wheel b on horizontal shaft b7,which has journal-bearings in the upright posts of frame B at their top ends, and extends far enough on either side of the said posts to receive hand cranks or winches B. The object of this arrangement being to drive the picks or chisels by hand-power, the operator sitting upon platform or seat A and forcing clutch-lever over so as to raise the sliding clutched out of contact with the driving-pulley A, and turning the hand cranks or winches B, motion will be communicated to the chisels, and in small machines for dressing and picking millstones this will generally be the means of operating the picks or chisels.

Horizontal shafts bT are` constructed and arranged so as to slide longitudinally, and when reeiprocated in one direction gear-wheel b'i is thrown out of gear with gear-wheel b5, and is held in this position or in gear with wheel b5 by means of the forked lever bS engaging in grooves b in shaft bl, and is retained in such position by spiral spring b1 around lever bs.

As above described, revolving motion is given to toothed wheel O on shaft b either through driving-pulleys AL A5, belt A, pulley A7 on shaft B2, or, when operated by hand, through the gear-wheel on horizontal shaft bl, upright shaft B2, tokhorizontal shaft b'L upon which toothed wheel C is made fast. Toothed wheel C gears into and drives wheel C on horizontal shaft D, which is supported upon and has and revolves in journal-boxes on arms that forni a part of frame B. Vheel C becomes a leader and gears into and revolves intermediate wheel, C2, on a short axle that is secured to frame B. This intermediate wheel gears into and revolves wheel C3, which is loosely fitted upon the end of the horizontal upper feeding screw-rod, E, which goes transversely across the entiremachine.k Leaderwheel C2 also gears into and revolves intermediate gear-wheel, c, which in turn gears into and drives wheel c', and wheel c gears into and revolves wheel 02, which is loosely fitted upon one end of the horizontal lower feeding screw-rod, E', which also goes transversely across the entire front of the machine and directly underneath feeding screw rod E. Both feed-rods revolve in journal-boxes secured to the front of frame B. This system of gear-wheels is so arranged and connected together that they cause the upper and lower feeding-rods, E and E, to revolve in the same direction, and so that the pitch of the screwthread will cause whatever is connected to and driven by said feeding screw-rods to be fed along at the same speed by either feed-rod, and in the same direction. p

On the opposite side ofthe machine from the driving-gear above described is an upright shaft, D', which revolves in journal-boxes secured to frame B. This upright shaft D has gear-wheels d and d firmly secured thereto. NVheel (Z gears into gear-wheel (l2, that is made fast to the upper horizontal feeding screw-rod E, and wheel d gears into gear-wheel d3, that is fast on the lower horizontal feeding screwrod E', by which arrangement of gear-wheels the two screw feeding rods are connected together and their movements coincident. Upon the upper end of upright shaft D is attached a hand-wheel, D4, and by means of which shaft Dand screw feeding-rods E and E may be revolved. On the ends of the feeding screwrods E and E', that have wheels C3 and c2 loosely fitted thereon, and outside of said wheels, are sliding sleeve-clutches d5 and d6, which slide longitudinally upon the screwfeeding rods, but are prevented from turning on said rods by feathers inserted longitudinally in the rods and projecting beyond the surface of the rods, and fitting in grooves in the sleeve-clutches. On the inner or that side toward the gear-wheels C: and c2 of sliding sleeve-clutches are driving-pins that engage with corresponding driving-pins on the outside of wheels C3 and c2.

c is a double-forked lever pivoted centrally at e to frame B, the forked ends fitting in grooves in the sliding sleeve-clutches d5 and d6.

c2 is an extension or continuation of lever c, extending upward, and is grasped by the horizontal reciprocating rod f. Upon this rod f are two sliding and adjustable gagestops f f 2. Arranged in suitableposition, and firmly held at its ends in proper place on the front of frame B, is guide-rodf3. The gagestops f and f2 have a hole entirely through 'IELQG v 5 cut a new pathway across the top or face of the stone, at the same time `regulating the force of the blow upon or the depth to be eut by the chisels or picks by adj usting the hand screw-rod K as may be required. Frame B is adjusted as to height at either side by means of the upright screw-rods B2, by which adjustment the chisels or picks may cut deeper in the stone at onel side of the machine than at the other, or they may be raised out of contact with the stone entirely by turning down the screw-rod B2 far enough to accomplish such result. The cliisels or picks are also adjustable on their shaft to project below the shaft more or less, as desired.

Ne do not confine ourselves to the exact construction of the parts in detail as herein described, as there are many ways of constructing the same Without departing from the principle of construction and operation that We have shown and described-as, for instance, We have described only two chisel or pick shafts; but it is evident that any number of shafts and chisels or picks may be used, or

`belts and pulleys may be substituted for gear- Wheels, 'or other mechanical means used for moving the frame B-to different positions than the toothed rack arms and pinions, and yet be the same invention.

Having thus described our invention, what We claim, and desire to secure by Letters Patent, isj l. The combination of shaft a9, arms am, carrying sliding axles a, pulleys a, and springs a, in the manner and for the purpose herein described.

2. The driving and intermediate gear-wheels, C, C', C2, G3, c, c, and c, in combination With the clutch-lever c, slidingclutches d5 and d, feeding-screws E and E', shaft DI, gear-Wheels d, d', d2, and d3, sliding rod f, with its adjustable gage-stops f2, sliding frame F, rod f, and springs f 5, constructed and arranged tooper-v ate substantially iu the manner and for Vthe purpose set forth.

3. The driving` and intermediate gear-wheels, C, O', C2, C3, c, c, and c2, above enumerated, shaft D, sliding and revolving Wiper-Wheel G, having Wipersg, in combination With the chisel or pick shafts H, having adjustable liftingarms I, constructed and arranged to operate substantially in the manner shown.

4.. The chisel or pick shafts H, cylinderadjusting nuts j, adjustable stops J2, and springs 3, when constructed and arranged in the manner shown.

5. The hand screw-rod K, base-plate fi", springs i2, in combination with the adjustable lifter-arms I, and chisel or pick shafts H, in the manner and for the purpose described.

6. The slotted guide-plate J, in combination with the base-plate i* and lifter-arms I, when constructed and arranged to operate in the manner and for the purpose set forth.

7. The adjustable picks or chisels secured to their shafts H by'means of the dovetail rib o on the pick and the dovetail slot o in the shafts H, and held by the holding-screw h, in the manner shown.

8. rlhe hand -Wheel shafts M, pinions m', rack-arms L, and guideWays L', in combination with the frame B,When the parts are constructed and arranged to operate in the manner and for the purpose substantially as described.

9. The reciprocating, sliding, and supporting arms B', when constructed and arranged to operate in the manner described.

l0. The temper screw-rod a3, sliding beam a4, and plate a?, in combination with the sliding and supporting arms B,when constructed and arranged in the manner and for the purpose described.

1l. The hand screw-rods B2, in combination with the supporting-arms B', arranged to operate in the manner described.

l2. The stone cuttino` and stone -dressin machine herein described, when the several parts are combined and larranged to operate in the manner and for the purpose substantiall y as shown.

JACOB HEDRICK. VILLIAM TASH. HENRY KREUDLER.

l/Vitnesses:

H. SUNDHEIM, LEBREOHT TREAGER.

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