US1371311A

US1371311A - Stone-planing machine

Info

Publication number: US1371311A
Application number: US383284A
Authority: US
Inventors: Koromogawa Hideo
Original assignee: Individual
Current assignee: Individual
Priority date: 1920-05-21
Filing date: 1920-05-21
Publication date: 1921-03-15
Anticipated expiration: 1938-03-15

Description

H. KOROMOGAWA.

STONE PLANING MACHINE. APPLICATION FILED MAY2I11920.

1,371,31 1 Patent ed Mar. 15, 1921.,

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ll. KOIIOMOGAWA. STONE PLAIING MACHINE. APPLICATION FILED V21, 1920.

"Patented Mar. .15, 1921.

2- SHEETS-SHEETZ- I Z W UNITED STATliS HIDEO KOBOMOGAWA, OF OKUBO,

TOYOTAMA-GUN, JAPAN.

STONE-PLANING MACHINE.

Specification of Letters Patent.

Patented Mar. 15, 1921.

Application filed May 21, 1920. Serial No. 383,284.

To all whom it may concern:

Be it known that I, Hrono Kononoexwx, subject of the Emperor of Japan, residing at No. 212 Hyakunin-machi, Okubo. Toyotamagun, Tokyo prefecture, Japan, have invented certain new and useful -improvements in Ttone-Planing Machines, of which the following is a specification.

This invention relates to improvements in stone planing machines and it is particularly devised to automatically plane a particular surface of a stone after the machine has been initially set.

The object of the invention is to provide a stone planing machine designed to support and move the stone beneath a revolving cutter rotating in a fixed plane, and to furnish mechanism for automatically shifting the stone so that one of its surfaces will be brought to a particular plane without manually controlling the machine after it has been originally set.

With the foregoing object outlined and with the other objects in view which will appear as the description proceeds, the invention consists in the novel features hereinafter described in detail. illustrated in the accompanying drawings and more particularly pointed out in the appended claims.

Referring to the drawings,

Figure 1 is a longitudinal sectional view of the machine. Fig. 2 is a bottom plan view of the same. 7

Fig. 3 is a transverse sectional view of the machine taken on line A B of Fig. 1.

Fig. '-1 is a top plan view of the machine.

In the drawing 1 represents a frame which in the present instance is in the form of an inverted pan and mounted on the upper surface or table of the frame are a plurality of guide surfaces 2 having parallel V-shaped guiding grooves 2".

The guiding surfaces 2 are spaced apart to provide a central space in which the stone carrying box 3 operates, and this stone box has its upper end open to receive a stone block 4:. The bottom of the box 3 is provided with a plurality of supporting balls 6, which are mounted in semi-spherical casings 5. and the box 3 may be shifted longitudinally and transversely of the bed plate or table by riding on these balls.

Mounted on the guiding

surfaces

2 and 2 are sliding plates 7 and 7 which are provided with depending V-shaped lugs which slide in the V-shaped grooves of the guiding surfaces.

The adjacent ends of the sliding plates are provided with transversely disposed bearings S in which are rotatably mounted threaded shafts 9 which engage nuts 10 secured to opposite sides of the stone carrying box 8. i

From the foregoing description it will be understood that the sliding plates 7 and 7 are used to shift the stone carrying box 3 longitudinally of the machine and that the threaded shafts 9 are employed for shifting the stone-carrying box transversely of the machine.

The means for shifting the stone carrying box transversely will now be described. The shafts 9 are provided at their forward ends with fixed bevel gears 11 which at certain intervals, that is at the ends of the longitudinal movements of stone-carrying box, mesh with horizontally disposed bevel gears 12. These bevel gears 12 are fixed to vertical shafts which extend through the table of the frame and the lower ends of the shafts are provided with fixed ratchet wheels 13 and 13', the teeth of the ratchets being engaged by

pawls

14 and 14 that are swiveled or pivoted on

stud shafts

15 and 15 which depend from the under side of the table of the frame. The pawls are secured to the forward ends of

levers

16 and 16 and the rear ends of the levers are designed to be intermittently engaged by

trips

18 and 18 which are fixed to a longitudinall Y movable bar 17 that is slidably mounted in the lower portion of the frame 1. The left-hand end of the bar 17 is provided with a bifurcated belt shifter 19.

The table of the machine bed 1 is provided with a plurality of longitudinally disposed spaced vertical slots 20 in which are slidably mounted pins 21 and 21' which are fixed to the sliding plates 7 and 7 and these depending pins engage the levers 16 and 16' at the ends of the longitudinal strokes of the sliding plates 7 and 7 and cause said levers to strike

trips

18 and 18 for the purpose of moving the belt shifter 19.

Mounted in the lower portion of the machine frame is a longitudinally disposed horizontal rotatable shaft 25 which is provided with spaced screw threads for a purpose which will be hereinafter described.

Mounted on one end of the shaft is a free pulley 22 and a fixed pulley 23, and surrounding the shaft and freely mounted thereon is a sleeve 28 carrying a fixed pulle 2 1. The threaded portions of the shaft 25 engage fixed

nuts

26 and 26 carried by lugs which depend from the sliding plates 7 and 7 and slide in longitudinally disposed

alined slots

27 and 27 which are arranged in the bed of the machine frame.

When the belt shifter 19 is placed to con nee-t the driving belt with the idle pulley 22 the machine will be inoperative, but when the belt shifter is moved to connect the belt with the pulley 23 the shaft 25 will be driven in one direction and this will cause the threads of said shaft to operate in the

nuts

26 and 26 and cause the sliding plates 7 and 7' together with the stone-carrying box 3 to be moved longitudinally of the machine in one direction. When the sliding plates 7 and 7 approach the end of their stroke in this direction one of the

pins

21 and 21 will strike its

respective lever

16 or 16 and will cause one of the pawls 14; and 11 to turn one of the ratchets l3 and 13 through a distance equal to the distance between two teeth of one of said ratchet wheels. At this time one of the gear wheels 11 is in mesh with one of the gears 12 and this will cause one of the gear-wheels 11 to be turned slightly. The shafts of the gear wheels 11 are connected together by a crossed belt or chain 4 1 so that movement of one of said gears 11 will cause simultaneous movement of the other gear 11 in the same direction, and simultaneous movement of the gears 11 will turn the shafts 9 and cause the threads of the same to move the nuts 10 and the stone-carrying box slightl transversely of the bed of the machine rame.

For the purpose of moving the sliding plates 7 and 7' in the opposite direction the

lever

16 or 16 which has been previously struck by one of the

pins

21 or 21 will operate or engage one of the

trips

18 or 18 to cause movement of the belt shifter 19 to bring the belt into engagement with the pulley 24:. This pulley will operate through a sleeve 28 and

gears

29, 30, 31, 32 and 33 to drive the shaft 25 in a direction opposite to its initial movement and in consequence the

nuts

26 and 26 together with the sliding plates 7 and 7' and the stonecarrying box will be returned to their original position, this cycle will continue automatically until the stone 4 has been planed or dressed to the desired extent.

Located at the ends of the machine are bearing

posts

35 and 35 which support a horizontal longitudinally disposed rotary and sliding 'of the machine bed plate,

shaft 36 which carries the planing cutter 34. This planing cutter is adapted to be fixed to the shaft 36 and to rotate in a fixed vertical plane and as the stone moves beneath the cutter said cutter will operate on the upper surface of the stone to bring the same to the desired plane.

While I have shown and described the preferred embodiment of my invention, I am aware that various changes and modifications may be made in the construction shown without departing from the spirit of the invention as set forth in the following claims.

What I claim and ters Patent is:

l. A stone planing machine comprising a bed plate, a longitudinally and transversely movable stone-carrying support movably mounted on the upper surface of said bed plate, a rotary cutter movable in a fixed plane and designed to operate upon a stone carried by said support, plates slidably mounted on said bed plate and provided with fixed nuts, a threaded shaft engaging said nuts, means for rotating said shaft in opposite directions for moving said nuts plates in opposite directions, and means controlled by longitudinal movements of said bed plates for shifting the stone-carrying support transversely of the bed plate.

2. A stone planing machine bed plate provided with a plurality of longitudinally disposed spaced guiding plates, a plurality of spaced sliding plates mounted on. said guiding plates, a stone-carrying support secured to said sliding plates and m0vable longitudinally and transversely of said bed plate, a stone cutter rotatable in a fixed plane and designed to operate upon a stone desire to secure by Letcomprising a carried by said support, means for simultaneously moving said sliding plates and said stone-carrying support longitudinally and means controlled by longitudinal movements of said stone-carrying support for shifting the stone-carrying support transversely to the bed plate.

3. A stone planing machine comprising a bed plate provided with longitudinally disposed spaced guiding plates, sliding plates mounted on said guide plates and carrying rotatably mounted. threaded shafts, a stonecarrying support provided with nuts which engage said shafts, a stone cutter rotatable in a fixed plane and designed to operate on a stone carried by said stone support, members fixed to said sliding plates and provided with nuts, a second threaded shaft engaging the last named nuts, means for rotating the second threaded shaft in opposite directions for moving the sliding plates and stone-carrying support longitudinal of the bed plate, and means controlled by longitudinal movement of said stone-carrying support for causing simultaneous movements of the first named threaded shafts, for causing the stone-carrying support to be moved transversely of the bed plate.

4:. A machine of the kind defined by claim 1-, in which the guide plates and sliding plates are provided with cooperating grooves and projections for preventing transverse movement of said sliding plates relatively to said guide plates.

A machine of the kind defined by claim 3 in which the first named threaded shafts are provided with fixed gears, gears mounted on the bed plate and designed to be intermittently engaged by said gears, ratchets fixably connected tothe second named gears, pawls engaging said ratchets, levers pivotally connected to the bed plate and carrying said pawls, pins fixed to the sliding plates and designed to intermittently engage said levers, a sliding rod carried by the bed plate and having trips intermittently engaged by said levers, and a belt shifter controlled by movement of said sliding rod.

6. A machine of the kind defined by claim 3 in which the means for oppositely rotating the second named threaded shaft comprises a belt engaged pulley fixed to the second named threaded shaft, a sleeve loosely mounted on the second named threaded shaft and provided with a pulley designed to be engaged with a belt, a gear fixed to said sleeve and a gear fixed to the second named threaded shaft, and gearing connecting the last named two gears.

In testimony whereof I arfiix my signature in the presence of two witnesses.

HIDEO KOROMOGAWA. [Ls] Witnesses:

GENJI KURIBARA, S. NAKAO.