US508825A - jeinsaume - Google Patents

Description

(Remodel.) 8 2sheetssneet 1. A. JEANSAUME. l 8

MACHINE PGR SAWING. BLOCKS 0F STONE. N0. 508,825.l

Patented Nov. '14, 1893.l

(No Model.) I 2 Sheets-Sheet 2. A. JBANSAUME. MAHINE FOR SAWING BLOCKS 0F STONE. f N0. 508,825. Patented NOV. 14, 1893.

Fm. l

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. WASHINGTON, n. c.

"UNITED STATES* PATENT, OFFICE."

ANTOINE .IEANSAUME, OF PARIS., FRANCE.

MACHINE FOR sAwlNG BLOCKS OF sToNEf SPECIFICATION forming part of Letters Patent No. 508,825, dated November 14, 18.93. Application filed Math is', 17892. serial No. 425,493.- No moda.) Patented in France Beamter 12. 1891, No. 218,009.

To all A whoa/1, .it mag/concern:

-Be it known that I, ANTOINE JEANSAUME, of Paris, France, have invented a new and Improved Machine for Sawing Blocks of Stone, (for which I have obtained Letters Patentiu France, No. 218,009, dated December 12, 1891,) of which the following is a full, clear, and exact description. l The object of myinvention is to provide Improved stone saws for expeditiously sawing blocks of stone, especially marble, into slabs of any 'desired thickness.

yMyinvention also consists of means where- 'by slabs of various profiles eau be cut.

That myrinvention may be better understood, I annex to this description two sheets of drawings in whiehv Figure 1 shows, in elevation, the arrangement of the several parts of my machine. Fig. la is a diagram, intended to show, visibly, the slightly eccentric mounting of the drums. Fig. 2 represents the machine, the right side being a view from above, the left side a horizontal section on the line 2--2 of Fig. 1. Fig. 3 is a vertical section on the line 3 3 of Fig. l. Fig. et is an enlarged front view of the partsyby which the movement of the sawcarrying frame is obtained. Fig. 5 is a cross section on the line 5 5 of'Fig. 4. Fig. 6 is a horizontal section on the line 6--6 of Fig. 4.

Fig: 7 is an enlarged plan view, with partial horlaontal section, of the mechanism for dis'. placing the saws horizontally, with the dis- ,placementf'indicaton Fig. Sis a front View of the parts represented in Fig. 7. Fig. 9 is a transverse section on the line 9-9 of Fig. 10, Illustrating the mechanism for displacing the saws laterally, automatically and continu- Ously. Fig. lO is agplan View, partially in section of the part of thermachine'to which'the abovemechanism is Iitted.A

Corresponding letters indicate corresponding parts. V

Two upright posts K are provided at each side of the machine, at the ends, and a sawcarrying frame is provided consisting of longitudinal bars J, arranged in pairs at each side of the machine, each pair being connected by diagonal cross pieces j which also brace the frame.v Cross bars i serve the same purpose. The bars J, at their ends are formed into bands or eyes j that embrace the uprights K, whereby the frame may be moved vertilixed, while the bearings e are movable,`be f ing adapted to be displaced and adjusted by means of screws Aworking in fixed female threaded bearings, as shown.'v This arrangement permits Of stretching the saws A which pass over the drums. l

. The shafts O of the drums E are not located exactly inV the centers of the drums; the eccentricity however is only about an eighth to a quarter of a line', and willlnot be noticeable inthe drawings; but in order'that the arrangement may be understood, I havey illustrated it in a diagram, in Fig. 1f. I

0, o, o, 0,'are the shafts on which the four drums rotate. Q

c', c2, c3, represent, by way'of example,three different positions occupied by the geometrical centers of the drums during their rotation onv their shafts 0;,in practice, the distance between the pointe (center of rotation 0f the drum) and the geometrical centerfishown in three derent positions c', c2, c3) isOnly, as stated above, about an eighth to ay quarter of a line. It will be understood that the eccentricity is the same for each of the'druns.

The lower bars J carry two 'shafts C, on which are mounted grooved rollers B, which are loose on the shaft. On one rside of the machine the shafts C extend `beyond' the frame J and are screw-threaded as shown at Cl. A hand-wheel H, which is also threaded, is mounted on the screw of the shaft beyond a yoke F through 'which the threaded end of the shaft projects, and 'the 'turning of the wheel serves to move the shaft horizontally.

dat on and extend over the drums E. Move ment is imparted to these sawsbythe drums IOO E, and the eccentricity of the latter impart, besidesthe longitudinal movement, a slight rising and falling movement. These saw bladesplaced fiaton the drum pass in the grooves of the rollers B which brings them to the vertical position.

lOne of the drums E is driven by means of a transmission belt passing over a series of pulleys P, one of which derives its motion from the driving shaft M. I may of course employ other means for rotating the drums.

After having thus described the machine in detail I will explain the operation. The block of stone to be sawed is placed on the machine with its surface to be attacked close to the lower, vertically disposed portions of the saws. The drums, set in operation by any known means, carry the saws along. The frames are simultaneously lowered by the movement of the worms l l', worm-wheels Z2, and racks L, and all the saw blades attack the stone at the same time. The frames are lowered slowly and the saws cut their way more and more into the stone, having, besides the longitudinal movement, slight up-and/ down movements owing to the eccentricity of the drums; A A2 A3 (Fig. la) indicate three positions of the saws, corresponding to the positions E E2 E3 of the drums. 'Ihe object 0f these reciprocating vertical movements is to permit the grains of sand which are in the kerfs to fall each time that thesaws rise inv order to attack the stonetwhen the saws again come in'contact therewith. When the saws areat the bottom, having passed through the stone, the latter isdivided into slabs having a thickness corresponding to the distance between the blades. In order to be enabled to vary the distance between the saw-blades A, I mount sleeves b loosely on the shafts- C, between the grooved rollers B so as to keep them apart; two sleeves b', provided with setscrews, serve to hold the rollersBand sleeves b on the shafts C. By varying the length ofl the said sleeves b, or by using a greater or less number of them, the rollers B .and

consequently the saw-blades A can be kept any distance apart, and thus slabs of any thickness desired can be cut. In Fig. 3, s indicates the lines on which the stone is divided. If .it is desired to obtain slabs thinner than the width apartofy the saws, one complete cut is made and the frames J with the saws A are` then raised above the stone S and the shafts C withthe rollers B are displacedhorizontally a distance equal to the desired thickness of the slabs this is eected by turnin gthewheels H, and a very exact adjustment is obtained by means of the indicatorsf G.

When employing the modifiedmechanism shown in Figs. 9 and 10, I am enabled to'saw v slabs of an undulating or any other curvilineareross-.section The cam .H',.mo.unted eccentrically on the spindle h', which revolves in bearings provided in the brackets F F', receives a continuous rotary motion from the y pulleys h; the shaft C abuts with one end .against the periphery of the cam H', the other end of the shaft being under the influence of the spring R. Fig. 9 shows the undulating lines or kerfs s obtained when employing the cam H. The saw blades A must of course be very narrow to permit of their lateral displacement while passing'through the stone, but it will be understood that the cain H rotates very-slowly, in comparison withthe rotary speed of the. shaft C. It will be further obvious that by employing other forms of cams, slabs of various cross sections can be produced, for instance like the profile of balusters, rc.

I claim as my invention and desire to secure by Letters Patenty 1. A stone sawing machine, comprising a frame and rotatable drums mounted there-V on, these drums being secured eccentrically upon their shafts, endless -saw blades passing at-over the said drums, shafts arranged on the frame transversely to the direction .in which the saw blades travel, grooved rollers mounted on said shafts and adapted to bring the saw blades into a position perpendicular to that portion of the bladesfwhich is adj-acent to the drums, means for rotating the drums, and means for'continuously advancing the frame with the saws during the operation of the machine, substantially as described.

2. A stone sawing machine, comprising a frame and rotatable drums mounted there-4 on, these drums being secured eccentrically upon their shafts, endless saw blades passing flat over the said drums, shafts arranged on the frame transversely to the di-rection in which the saw blades travel, grooved rollers .the saw bladesk intoa position perpendicular to that portion of the blades-which is adjacent to the drums, means for displacing the said shafts longitudinally, means for rotating the drums, and means for continuously advancing the frame with the saws duringthe operation of the machine, substantially as described.

3. In a stone sawing machine of the'kind described the combination with the traveling frame, the drums mounted thereon, the endless sawblades passing over the drums, the transverse .shafts likewisevmounted on the said frame, and the grooved rollers secured to the said shafts, of springs bearing against one end of the said shafts, cams in continuous contact with the'- other ends of the said shafts and adapted to displace the saine longitudinally, andmeans for rotating said cams, substantially as described.

Intestimony that I claim the foregoing as my own I havehereunto affixed my signature in presence of two witnesses.

ANTOINE JEANSAUME.

Witnesses:

ROBT. M. HooPER, J. MoMHARD.

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mounted `on said shafts and adapted to bri-ng lIO

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