US513969A

US513969A - Stone-working machine

Info

Publication number: US513969A
Authority: US
Publication date: 1894-01-30
Anticipated expiration: 1911-01-30

Description

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SQHERNON'.

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S HERNON STONE WQRKING MACHINE.

Ia-513,969. Patented Jan. so, 1894.

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UNITED STATES PATENT OFFICE.

STEPHEN HERNON, OF LOS ANGELES, CALIFORNIA.

STONE-WORKING MACHINE.

SPECIFICATION forming part of Letters Patent No. 513,969, dated January 30, 1894.

Application filed January 31, 1893. Serial No. 460,258. (No model.)

To all whom it may concern:

.Be it known that I, STEPHEN I-lERNoN, a subject of the Queen of Grreat Britain, residing at Los Angeles, in the county of Los Angeles and State of California, have invented a new and useful Stone-Working Machine, of which the following is a specification.

I The object of my invention is to produce a machine by which the operation of removing the inequalities of surface from building and other stone may be effectively accomplished by the use of a machine operated by means of steam or other power in place of manual labor. .Y

The accompanying drawings illustrate my invention.

Figure l is a front view of a machine embodying my invention, parts being shown in section to illustrate the construction. Fig. 2 is a fragmentary view of the lower portion of the hammer frame. Fig. 3 is a longitudinal sectional view of the same on line ,z-'z Fig. 2. Fig. 4 is a sectional view on line -x Fig. l looking toward the left. Fig. 5 is a plan view of the machine-showing the power shaft supporting frame bent or swung to one side. Fig. 6is a sectional view on line y--y Fig. 1 looking toward the right. Fig. 7 is a fragmentary view of one of the stone working tools removed from the machine. This form is different from that shown in the machine and is interchangeable therewith.

Parts are shown in section to illustrate the construction.

My invention is designed to operate stone working tools by means of steam or other power, and allow the tools to be moved back and forth upon the stone while in operation to avoid as much as possible the labor and expense of moving the stone to bring it into the proper position to be operated upon by the stone working tools.

My invention is designed to be provided with interchangeable tools so that the roughness may first be removed- :from the surface of the rock or stone by means of a point which is driven forcibly against the stone by means of a reciprocating hammer driven by steam or. other power, and which point can be moved to and fro upon the stone by the operator to cause the point to strike against different portions of the stone at successive blows of the hammer without moving the stone, and v be removed from the machine and a finishing tool put in the place thereof so that by the operation of the one machine, I am `able to complete the operation of dressing the stone ready for use.

In the drawings, A is a suitably arranged supporting column, having journaled in its upper portion one end of the power shaft A which is arranged to be driven by steam or other power (not shown).

Bis a horizontal swinging frame having one end secured to the support A and having its other en d free to allow it to swing in the arc of acircle in a horizontal plane. This frame is formed of two girders C C arranged in the same vertical plane and connected with each other bymeans of braces O arranged at intervals along their length. These girders are each provided with jointsc c correspondingly arranged opposite each other and between each set of connecting braces to allow horizontal but not vertical movement of the outer end of the frame and thus permit the outer end of the frame to swing in a horizontal plane.

These girders may be made flexible instead of jointed; `but I consider the jointed form shown to be preferable.

D is a flexible driving shaft formed of coiled springA and arranged to communicate power from the power shaft A to the hammer or tool reciprocating mechanism E which is suspended from the outer end of the frame B. The spring-drivingy shaft is arranged longitudinal the frame B and vjonrnaled in the `braces C.

F is the driving band wheel and F is the power pully arranged upon the power shaft.

F is an idle wheel.

f is the power band or belt.

The band wheel F which communicates the power to the flexible shaft D, and the band wheel D which transmits the power from the flexible shaft to the tool reciprocating mechanism are respectively secured to rigid shafts d d and these shafts are each journaled in suitable rigid supports such as the supporting column A and braces O, and the ends of the iiexible shaft are respectively secured to the ends of such rigid shafts. This construction is common however and does not require illustration in detail.

IOO

G is a pendent tool-reciprocating-mechanism-supporting frame pivoted to the horizontal frame B and having its pivotal point coaxial with the driving shaft D. As shown in the drawings the two side members g g are respectively j ournaled upon the rigid shaft d'.

H is a hammer which is secured to an actuating rod H which extends upward, passing through suitable guides I I and is provided with a cam engaging pin h which is arranged in the path of the revolving camsJ which are secured to a shaft J which is journaled in the frame G and is provided with a band wheel L which is arranged to be rotated by means of a belt or band trained around such wheel and around the band Wheel D upon the shaft ol. By having the pivotal point of the frame G co-aXial with the axis of the driving shaft D the belt Z always retains the same tension no matter which way the frame G is swung.

M is a point or tool arranged in the bottom of the frame G, and in the path of the reciprocating hammer to receive blows therefrom. This point or tool is provided on its upper end with a stop or head M and the point is heldin position by means of the walls of the opening m which is provided in the bottom of the frame G for it to pass through.

m is a spring arranged to hold the point normally elevated to receive the blow from the hammer H.

A segmental cog rack N is fixed to the frame B and ratchet N is secured to the reciprocating-mechanism-supporting frame to allow the frame to be swung into differentinclinations and there retained.

h is a spring arranged to force the hammer downward to give increased force to the stroke. This is especially important when the frame G is inclined as shown in Fig. 6. The bottom g of the frame G is cylindrical and dle G to allow the bottom of the frame to be rotated to turn the point around when desired by the operator.

The cams J J are secured to the cam shaft J by means of a bolt j, and when it is desired to change the stroke of the hammer I-l a new set of cams of greater or less length may be attached to the cam shaft to give a heavy or light blow as may be desired by the operator. These extra cams are not shown neither is the manner of securing the cams to the shaft illustrated in detail. This con struction will readily be understood by mechanics by reference to Fig. 4 and further illustration is unnecessary.

In practice the power is applied to rotate the power shaft A', the beltf is shifted from the idle wheel F to the power wheel F and rotates the driving pulley F which rotates the shaft f and the flexible driving shaft D, which in turn rotates the shaft d and the pulley D. The belt Z turns the band. wheel L and the cam shaft J causing the cams J J to act against the pin h to raise the hammer Il handle P and secured by a uut p.

through the medium of the rod H. Thus at each revolution of the cam shaft two blows are delivered, upon the point by the hammer. The operator adjusts the frame to any pitch desired by means of the rack N and ratchet N', and by means of the handle G swings the frame to the right or left, the point M moving in the arc of a circle as illustrated in Fig. 5. The 'flexible shaft D will permit of considerable movement of the pendent swinging frame G without causing too much friction of the shaft D with the journals in the braces C.

ln Fig. 6 the position of the parts when a stone is being dressed with a point is clearly illustrated. O represents the stone. Vhen the rough portions have been removed with the point, a bush hammer P is placed in the machine in place of the hammer H and the point M. The cam engaging pin 7L upon the bush hammer handle P is reduced at its inner end and is passed through a holep in the The handle P" is also screwed into the bush hammer frame P". The cam pin of the hammer handlelfl is secured to the handle in the same manner, and the handle is also screwed into the hammer Il. When it is desired to take the hammer out of the frame G, the cam Jis turned to fully elevate the hammer so it may be unscrewed from the handle and the hammer removed, the pin 7i is removed from the handle and the handle is slipped out of the guides I I. The spring m is released from its engagement with the point M and the point is slipped up and out of the frame G.

To place the bush hammer in position the pin 7L is removed from the handle P and the handle is slipped up through the openings (not shown) in the guides I I'. Then the pin h is inserted in place and secured by the `nut p. is provided with a swiveljoint g" and a han- In dressing the stone with the bush hammer it is necessary to turn the hammer as the frame B is swung in the arc of a circle to cause the lines left by the hammer to be in parallel rows upon the surface of the rock, and not in concentric arcs of a circle. To accomplish this end a hammer turning handle P is attached to the hammer by which the hammer may be turned, the screw connection between the hammer and the handle P" permitting the hammer to be turned without turning such handle. i

The stone is mounted upon a car (not shown) which may be arranged to run longitudinal of the frame B, or transverse the length of the frame, as may be deemed most desirable.

Now, having described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a stone working machine the combination set forth of a horizontally arranged frame comprising two girders arranged in the same vertical plane and connected to each other by braces and provided with joints respectively arranged opposite each other be TOO IIO

tween each set of braces; a flexible driving v shaft arranged longitudinally of such frame and journaled therein; a pendent frame supporting the tool-reciprocating mechanism and pivoted to the free end of the horizontal frame and arranged at its lower end to receive a stone Working tool; a hammer arranged within the pendent frame and adapted to be reciprocated to strike the stone working tool; an upwardly extending rod secured to such hammer and provided with the cam engaging pin arranged in the path of the revolving cams; such cams secured to a shaft j ournaled in the pendent frame; such shaft, and suitable operative means connecting the cam shaft with the driving shaft.

2. In a stone working machine the combination with a horizontally arranged frame comprising two girders arranged in the same vertical plane and connected to each other by braces and provided with joints respectively arranged opposite each other and between each set of braces; of a flexible driving shaft arranged longitudinally of the frame and journaled in such frame; a pendent frame supporting the tool-reciprocating mechanism and having its pivot co-axial with the driving shaft; a suitable stone working tool having its handle arranged to reciprocate in such pendent frame, and suitable tool reciprocating mechanism arranged in ysuch pendent frame and adapted to reciprocate such tool; suitable means operatively connecting the driving shaft with the tool reciprocating mechanism, and suitable means for rotating the driving shaft.

3. A stone working machine comprising the combination of ahorizontally arranged jointed frame secured at one end to a suitable support provided along its length with joints adapted to allow horizontal but not vertical movement of such frame and having its other end free and arranged to swing inthe arc of a circle parallel with the horizon; a exible driving shaft journaled in such horizontal frame; a pendent frame supporting the toolreciprocating mechanism and pivoted to the free end of the horizontally arranged trame and having its pivot co-axial with the axis of the iiexible driving shaft; suitable tool reciprocating mechanism arranged in such pendent frame and adapted to reciprocate a stone working tool; such tool and suitable means connecting the tool reciprocating mechanism l with the driving shaft.

s' STEPHEN HERNON.

Witnesses JAMES R. ToWNsEND, FRANK B. ALvERsoN.