US361011A

US361011A - jackson

Info

Publication number: US361011A
Authority: US
Publication date: 1887-04-12
Anticipated expiration: 1904-04-12

Description

(No Model.)

T. A. JACKSON.

MACHINE FOR SAWING STONE.

2 Sheets-Sheet l I Panama Apr. 12, 1887.

N. PETERS, Phcloblhographar. Washington. D. C,

' mic-w. '1, Mord,

UNITED STATES PATENT OFFICE.

THADDEUS A. JACKSON, OF NEV YORK, N. Y.

MACHINE FOR SA W|NG STONE.

SPECIFICATION forming part of Letters Patent No. 361,011, dated April 12, 1887.

Application filed November 27, 1886. Serial No. 220,043. (No model.)

To aZl whom it may concern..-

Be it known that I, THADDEUS A. JACKSON, a citizen of the United States, residing at New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Machines for .Sawing Stone 5 and I do hereby declare that the following 1s a full, clear, and exact description of the same, reference being had to the annexed drawings, making a part of this specification, and to the letters and figures of reference marked thereon.

Figure l of the drawings is a side elevation of my improved machine for sawing stone and driving mechanism for imparting to the sawblade the required reciprocating motion; Fig. 2, a top plan view of the same; Fig. 3, an

end view; Fig. 4, a detail View in perspective of the saw-blade carrier, also the feednut detached from the carrier; Fig. 5, a detail view in perspective of the slotted plate employed with other .mechanism for lifting the saw-blade and carrier at each end of the stroke; Fig. 6, adetail view, in perspective, showing a modification of the carrier; and

Fig. 7, a detail view in perspective of the mechanism employed in connection with the slotted plate for feeding the saw-blade in a downward direction when cutting both ways.

The present invention has relation to that class of stone-sawing machines in whichthe saw-blade is raised by suitable mechanism at the end of the stroke and lowered at the be-.

ginning of the next stroke, whereby the kerf can be cleared of debris while the saw-blade is in operation.

The object of the invention is to provid simple and effective means forraising and lowering the saw-blade at the end of the stroke; also, improving the machine in the several details of construction, whereby a more perfect action of the saw-blade is obtained and the motion thereof more readily controlled. These several objects above enumerated I attain by the construction substantially as shown in the drawings, and hereinafter described and claimed.

In the accompanying drawings, A represents the frame of the machine of any desirable form and construction, and is provided, near one end,with the usual pulleys, abB,over and around which pass driving-belts ed. The

arrangement of the pulleys and belts is of the common form, and therefore I layno claim thereto, and, if preferred, any suitable or wellknown driving mechanism may be employed,

Within the frame A is supported the sashes O, by means of the rollers e, working on short tracks f, secured to the inner sides of the frame of the machine. Below the tracks], at asuitable distance therefrom, are guides g, to

guide the sashes in their reciprocating mo-' tion. If preferred, the lower ends of the sashes, and also the top, may be connected together by suitable braces, h i, respectively, as

shown in Figs. 1 and 2. Any suitable means,

however,may be employed for connecting the sashes together, as found most preferable.

The saw-blade D may be of any suitable construction usually employed for sawing stone, either a plain cutting-edge or diamond saw-teeth being used, as desired. of this saw-blade are connected to carriers E, of the construction shown in either Figs. 4 or 6, the same having rollers j upon their sides, which bear upon upright guides it, upon the inner sides of the sashes C. The carrier, as shown in Fig. 4., at its back end is cast with transverse bars Z, through which pass the screw-threaded ends of the usual saw-buckles, m, and receive upon their screwthreaded ends the usual tightening-nuts, the opposite ends of said buckles being attached in the ordinary manner to the saw-blade. These buckles are of the usual construction, and are for the purpose of tightening the saw-blade, said blade at its extremities passing between lugs it upon the interior top and bottom of the carrier, as

shown.

The carrier E is cast with an opening, 0, of any preferred shape to correspond with the shape of the sectional nut F, said not having The ends wings p, which fit in lateral grooves q of the opening o,for the purpose of retaining the nut in a more steady position. I have shown this not on an enlarged scale and square in crosssection, and therefore it should be understood that it is not of natural size or shape compared invention. The feed-screws G pass loosely through holes r in the carriers and engage with screw-threaded holes 3 of the nuts F, whereby the carriers are moved up and down.

In Fig. 6, which is a modification of the saw-blade carrier, in place of the lugs a transverse plates H are employed, having notches t, in which passes the extremity of the sawblade. These plates are made vertically adj ustable, also horizontally adjustable, by means of slots and set-screws, or in any other wellknown and preferred manner, thereby enabling the saw-blade to be kept in a true vertical line by the adjustment of the plates, and also adapting the carriers to saws of different widths. The lugs a, as well as the notches t, are for the purpose of stcadyingthc saw-blade while in motion.

The upper ends of the feedscrews G are provided with gear-wheels I, with which engage the teeth of pinions It, said pinion terminating at its upper end in a beveled gearwheel, 22. These pinions are mounted upon suitable studs projecting upwardly from a central brace, it, secured to the upper ends of the sashes O, as shown more clearly in Fig. 2. The gear-wheels o engage with similar gearwheels, 0:, upon the ends of a horizontal shaft, a, which has its bearings in the central brace between the sashes. The inner extremity is formed square or flat sided, as shown at I), and passes through a similarly formed sleeve, 0, upon the end of which is rigidly connected to or formed with a beveled gear-wheel, K, with which engage gear-wheels dc, upon the inner ends of transverse shaftsf g.

The crank-shaft h of the belt or driving pulleyBis connected to the shaft f by means of pitman i, ratchet-wheelj, and'pawl k. The shaft 9 is provided upon its outer end with the pulley a, hercinbefore described,and also with two loose pulleys. (Shown in dotted lines,Fi g. 1.) The drivingshaft or crank-shaft]! is provided with a crank, Z, to which is attached the pitman L, said pitman in turn being connected in any suitable manner to the sashes O. The shaft h is also provided with a second crank, m, to which is connected a pitman, M, the opposite end of said pitman being connected in any suitable manner to a longitudinally-sliding block, N, said block having a horizontal slot, n, with which engages a crankpin, 0, 011 the crank-wheel 0.

To the crank-wheel O are connected the ends of rods 1? Q, the opposite ends thereof being attached in any preferred manner to arms 1), upon a screw-sleeve, Ronc upon each of the feed-screws G. The screw-sleeves R extend over the smooth portion of the feed-screws G, at the upper ends theredfiand move independent of said feed-screws, and around the sleeves are nuts or boxes S, as shown in Fig. 3, which engage with the threads thereof. Suitable nuts are employed to keep the sleeves R in position on the feed-screw. The block N slides between incline-faced guides T U, whereby the block N is given a downward motion as it is the stone aftcrit has been cut.

projecting forward in a longitudinal direction and brings or carries the crank-wheel 0 partially around.

In the operation of the machine motion is imparted to the saw-blade D by means of the driving-pulley B, belt d, and pitman-connection L with the sashes C, carrying the sashes and saw-blade forward to cut the stone. At the completion of the stroke the crankandpitman connection M m with the block N move the block forward, and by means of the pin 0' the orank-wheel Owill be turned, and through the medium of the rods P Qand arms p the screw-sleeves It will be turned, and thereby lift the feed-screws G with it, and in turn the feed-screws lift the carriers E and saw'blade I) while the latter is coming back. "When the saw is cutting the stone, the blade is fed downwardly by means of the shaft f and gear-wheel d, engaging with the gearwhecl K, turning the shaft a, and by means of the gear-wheels 17 thereon engaging with the gear-wheels v, and the pinions u, engaging with the gear-wheels I, the feed'screws G are turned in the proper direction to lower the carriers E and feed the saw-blade, as required while cutting the stone. By means of theshaft g",the belts and tight and loose pulleys,hcreinbefore described, and the gear -wheels 6' K, with the gearing above described for feeding the saw-blade, said blade may be raised or lowered while the saw is not in motion, to adjust the blade to the varying heights of the stone to be sawed,and to raise the blade out of understood that the manner of connecting the gearqvheel K to the shalt a, as hereinbefore described, admits of the shaft moving longitudinally in the sleeve 0 of said wheel with out interfering therewith; but when turned the shaft will turn with it. \Vhen it is desired to have the saw out both ways when moving both backward and forward,the block N, guides T U, and thecrank-and-pitman connection M m are dispensed with and aslotted plate, \V, substituted, said plate being made stationary on the frame of the machine in any well-known manner. This plate VVhas an inclined slot, 1', which terminates at its end in inclined extremities s, the crank-pin 0 of the crank-whcel O engaging with the slot 1". The inclination of the slot will cause the crankwheel to turn downward at each end of the stroke when thcsashcs are moved forward and backward.

In order to feed at each end of the stroke, the crank at the extremity of the shaft h is removed and the cam A substituted, and a bracket, '1, is secured to the frame A, which has pivoted thereon an arm, B, slotted at its It should. .be

upper end for attachment thereto of the pitmotion to the pitman z" to feed the saw-blade downward at each end-of the stroke.

It will be noticed that the boxes S are stationary at all times in the sashes 0, said boxes being connected thereto. by transverse braces w, as shown in Fig. 3, and the screw-sleeve B,

which fits loosely over the smooth end of the feed-screw G, is turned by means of the arms p, which are connected to the mechanism hereinbefore described, and the screw-threads on the sleeve, engaging with the interior screwthreads on the boxes S, will cause the feedscrew to be raised or lowered as desired.

Having now fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a machine for sawing stone, the sashes 0, provided with guides k, in combination with a the saw-bladeD and carriers E,having notches on lugs and rollers, and the feed-screws G, ex-

' tending through the carriers, and mechanism,

substantially as described, for operating the screws to raise or lower the carriers, substantially as and for the purpose set forth.

2. In a machine for sawing stone, the combination, with the saw-blade carriers provided with lugs or notches for receiving the ends of the blade and opening 0, having'transverse slots q, of the sectional boxes F, having transverse wings p, substantially as and for the purpose described.

3. In a machine for sawing stone, the combination, with the movable sashes C and sawblade D, connected to suitable carriers, of the feed-screws G, screw-sleeves R, engaging with the interior screw-threads on stationary boxes S, and means for operating said sleeve,whereby the saw is raised or lowered, substantially as and for the purpose setforth. 4. In a machine for sawing stone, the shafts f 9, provided on their inner end with gearwheelsc c, the former oneof the shafts connected to a crank onthe driving-shaft by means of the pitman 't', ratchet j, and paw] h, and the former-mentioned shaft connected to the driving-shaft by means of belts and pulleys, in

combination with the shaft a, having aflat sided extremity, b,'and the gear-wheel k, provided with sleeves 0, adapted to slide thereon,

and operating as described, and the gear-" wheels at '0, pinions u, and gear-wheels I, and

suitable mechanism for operating the several shafts, whereby the feed-screws are also oper ated', substantially as and for the purpose specified.

5. In a machine for sawing stone, the combination, with the inclined guide blocks T U,

.wheel 0, engaging with the slot by means of pin 0', and suitable'devices connected with the crank-wheel for operating the screw-sleeves R, substantially as and for the purpose set forth. v

6. In a machine for sawing stone, the feedscrews G, screw-sleeves R, and stationary boxes S, in combination with arms P Q, crankwheel 0, and suitable mechanism for operating said crank-wheel, substantially as and for the purpose specified.

7. In a machine for sawing stone, the combination, with the crank-wheel O, of the stationary plate W, having inclined slot 1*, and inclined extremities 8, whereby the saw is made to out both ways, or in both directions, substantially as and for the purpose specified.

8. In a machine for sawingstone, the shaft f, connected with suitable gearing for operating theshaft a, and the pitman i, in combination with the pivoted arm B, spring a, and cam-wheel A, the latter being connected to the extremity of the shaft h, substantially as and for the purpose set forth.

9. In a machine for sawing stone, the movable sashes O, saw-blade D, and carriers E, to which they are connected, in combination with the feed-screw G, provided at their upper end with gear-wheels I, screw-sleeves R, and boxes S,-in closing the sleeves, and the pinions and gear-wheels u o w, the latter being connected 'to the ends of the shaft a, and means for operating said shafts, substantially as and for the purpose set forth.

10. In a machine for sawing stone, the sashes C,prov ided with suitable guides,k, and having connected thereto stationary screw-boxes S, in

' combination with the feed-screws G, screwsleeves R, carriers E, provided with wheels J, and the wheels or rollers 6, supported on tracks f, secured to the frame of the machine, substantially as and for the purpose set forth.

11. In a machine for sawing stone, the crankwheel 0, an inclined slotted plate, \V, in com- 'bination with the pivoted arm B, spring u, and cam-wheel A, and suitable intermediate connections for operating the shaft (1, and the sleeves R, substantially as and for the purpose set forth.

In testimony that I claim the above I have hereunto subscribed my name in the presence of two witnesses.

Y THADDEUS A. JACKSON.

Witnesses:

L. L. MILLER, M. P. CALLAN.