US1017784A - Stone-sawing machine. - Google Patents

Description

W. F. MEYERS.

STONE SAWING MACHINE. APPLICATION FILED JULYBI, 1909.

Patented Feb. 20, 1912.

7 SHEETS-SHEET 1.

COLUMBIA PLANOGRAPH CD.,WI\SH1NGTON, D. c.

INI/EIVTOR WfWuf M RNEY W. F. MEYBRS.

STONE SAWING MACHINE. APPLIOATION IILED JULY 31, 1909.

Patented Feb. 20, 1912.

7 SHEETS-SHEET a. r

COLUMBIA ILANOGRAPH co.,\\".\smNaTON, u. c.

W. P. MEYERS.

STONE SAWING MACHINE.

APPLICATION FILED JULY 31, 1909.

Patented Feb. 20, 1912.

7 SHEETS-SHEET 4.

l/VI/E/VTOI? ATTORNEY WITNESSES s lo W. P. MEYERS.

STONE SAWING MACHINE.

APPLIOATION FILED JULY 31, 1909.

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. 172mm Zar h zlzzesses W 5 M14," W

jj m COLUMBIA PLANOGRAPH 60., WASHINGTON. D. c.

Patented Feb. 20, 1912.

WITNESSES:

W. P. MBYBRS.

STONE SAWING MACHINE.

APPLIOATION rum) JULY 31, 1909.

Patented Feb. 20, 1912.

7 SHEETS-SHEET 6.

COLUMBIA PMNOORAPH 60., WASHINGTON, D. c.

WMOTW.

I W. F. MEYERS. STONE SAWING MACHINE.

APPLICATION FILED JULY 31, 1909.

Patented Feb.20, 1912.

7 SHEETS-SHEET 7.

Q H m HUGH WITNESSES A I'LANOGRAPH COHWASHINGTON. n. c.

UNITED STATES PATENT OFFICE.

WILLARD F. MEYERS, 0F LONG ISLAND CITY, NEW YORK.

STONE-SAWING MACHINE.

1,017,784. Specification of Letters Patent.

Application filed July 31, 1909.

To all whom it may concern.

Be it known that I, IVILLARD F. Marlins, a citizen of the United States, residing at Lon Island City, borough of Queens, city of l\ew York, in the county of Queens and State of New York, have invented a certain new and useful Improvement in StoneSawing Machines, of which the following is a specification, reference being had therein to the accompanying drawings, forming part thereof.

My invention relates to stone sawing machines, particularly to cutting off machines for stone, and the objects of my invention are to render the machine in some respects automatic, so that it requires less attention, to increase the capacity of the machine, both as to quantity of work and size of work that can be handled, and to increase the facility of adjustment of the work andof the machine.

Other objects and advantages will appear from the following description.

My invention includes double adjustable work-supporting extensions for the worksupporting table.

My invention also includes means facilitatingthe shifting of the work on the table.

My invention also includes means for adjusting the cutting off saw independently of its supporting frame and means for actuating the saw from an outside source of power without interfering with its adjustment, such means including a. shaft hanger arranged to move in unity with the saw-supporting frame.

My invention also includes other advantageous features and several details of construction and combinations of parts, as will hereinafter appear.

I shall now describe my invention with reference to the accompanying drawings and shall thereafter point out my invention in claims.

Figure 1 is a plan view, with portions broken away, of a machine embodying my invention. Fig. 2 is a plan view, on a reduced scale, of the work-supporting table. Fig. 3 is a side elevation, partly in section, as viewed from the right of Fig. 1. Fig. 4 is a section on a plane indicated by line of section 4-l of Figs. 1 and 5 as viewed from the right, with parts omitted, and shows a detail of the feed mechanism. Fig. 5 is a vertical section on a plane indicated by line of section 5 5 of Fig. 3 as VifiWfitl from Patented Feb. 20, 1912.

Serial No. 510,539.

the left. Fig. 6 is an enlarged plan view of the carriage, portions of the carriage-sup porting frame being also shown. Fig. 7 is an elevation of what is shown in Fig. 6 as viewed from below, parts being omitted. Fig. 8 is a view similar to Fig. 7 with other parts omitted and showing a different position of adjustment. Fig. 9 is an elevation of what is shown in Fig. 6 as viewed from above and with parts omitted. Fig. 10 is a vertical section on a plane indicated by line of section 1010 of Fig. 6 as viewed from the right. Fig. 11 is an enlarged detail plan view, showing portions of the mechanism for facilitating the shifting of the work on the table. Fig. 12 is an enlarged elevation of what is shown in Fig. 11 as viewed from below, a portion of the work-supporting table also being shown. Fig. 13 is an end elevation of an adjustable shaft hanger forming a part of my invention. Fig. let is a side elevation of what is shown in Fig. 13 as viewed from the right. Fig. 15 is a plan view, with portions broken away, of a modi fied construction in which the work-supporting table is equipped with a work-carrying device. Fig. 16 is an elevation of what is shown in Fig. 15. Fig. 17 is a vertical section on an enlarged scale on a plane indicated bye line of section 1717 of Fig. 15, portions being broken away.

The illustrated embodiment of my invention comprises a work-supporting table 11, on which is mounted a vertically adjustable frame 12 supported on split sleeves 13 slidable on posts or columns 1 1 and adapted to be retained in any desired position of vertical adjustment by clamping bolts 15. The frame 12 may be raised or lowered to different positions of vertical adjustment by lifting screws 16 journaled on the table 11 and having screw-threaded engagement with lifting nuts 17 carried by opposite ends of the frame 12. The lifting screws 16 are of the same pitch and are connected together to be operated in unison in the proper direction and at the same rate, so that the frame 12 may be adjusted up and down with an equal and parallel movement of all its portions. The lifting screws 16 are adapted to be actuated in this manner by a transverse shaft 18 passing beneath the table 1.1 and journaled thereon and geared to the lifting screws 16 by bevel gears, as shown in the drawings. The transverse shaft 18 is how as provided, with a sq red e p r tion 19 and vertical adjustment of the frame 12 may be manually effected by the application of a crank or wrench to this squared portion.

A tool-supporting carriage or saw carriage 20 is mounted to slide longitudinally of the horizontal cross frame 12 and is held in place and guided on the frame by dovetail gibs on the carriage, which engage with dovetail ways on the frame, as shown in the drawings, most clearly in Fig. 19. A rotary cutting-off saw 21 is fixed-on a sa w shaft 22 journaled in a saw-support comprising segmental end plates 23 and 24 fixed on a connecting rock shaft 25, pivoted on the saw arriage 29. This swinging sawsupport permits the saw 21 to be raised and lowered relatively to the table 11 independently of raising and lowering the frame 12, thereby providing greater convenience and facility in adjusting the saw 21 to any work supported on the table 11. To retain the saw 21 in different positions of vertical adjustment relatively to the carriage 29, the end plates 23 and 24 are provided with arcuate slots, as shown in the drawings, and are adapted to be clamped in place by clamp bolts 26 passing through these slots and. engaging the carriage 20. For the sake of increased strength, the clamp bolts 26 are placed out of radial line at each end, being shown as in quadrature with the rock shaft 25, and the curved slots in the plates and 24 are formed accordingly. \Vhen the clamp bolts 26 are loosened, the saw 21 may be con veniently adjusted relatively to the carriage 20 by a worm 27 engaging gear teeth formed in the edge of the segmental plate 24, which constitutes a worm wheel. The warm 2'? is carried by a squared shaft 28 journaled on the carriage 20 and to which a wrench or crank may be applied to manually effect the desired adjustment. The two extremes of vertical adjustment of the saw 21 relatively to the carriage 20 are shown in Figs. 7 and S, Fig. 7 showing the highest adjustment and Fig. 3 the lowest. The means for actuating the saw 21 comprise a spur gear 29 fixed on the saw shaft 22 and in mesh with a. larger spur gear 30 carried by a sleeve 31 loosely mounted on the rock shaft 25 and shown as extending into bearings in the carriage 20, the sleeve 31 having a belt pulley 32 fixed thereon. The rotative speed of the saw 21 may be varied by transposing the gears 29 and 30 or by substituting for these gears other gears of different relative diameters.

The saw 21 lies in planes substantially parallel with the length of the frame 12 and means are provided for feeding the carriage 20 along the ways of the transverse frame 12 to feed the saw 21 transversely of the table 11, the feed movement of the carriage 20 being automatically reversed to return the saw to the starting point, at which point the return movement of the carriage is automatically stopped. These means comprise a feed screw 33 j ournaled near its ends on the frame 12 and having screwthreaded engagement with a nut 34 carried by the carriage 29. To impart the feed movement to the feed screw 33, a worm wheel or screw gear is loosely mounted on one end of the feed screw and is adapted to be rotatively connected therewith by a toothed clutch member 3t3'splined on the screw shaft 33, as shown in the drawings, the worm wheel 35 being shown as forming the other clutch member cooperative with the clutch member 36. The worm wheel 35 is rotated by a worm 37 carried by a feed shaft 38 journaled on the frame 12. To impart the return movement to the feed screw 33, a bevel. gear 39 is loosely mounted on the other end of the screw 33 and is adapted to be rotatively connected therewith by a toothed clutch member 40 splined on the screw shaft 33, as shown in the drawings, and cooperative with the bevel gear 39, which constitutes also a clutch member. The bevel gear 39 is rotated by another bevel gear 41 carried by a carriage return shaft 42 journaled on the frame 12. The feed shaft 38 and the return, shaft 42 are shown as geared together for concurrent rotation by a belt 43 engaging cone pulleys 44 and 45 fixed on the shafts 3S and 42, respectively, the cone pulleys enabling changes in the relative rates of speed of the feed movement and of the return movement of the saw-supporting carriage 20, the return movement, however, always being more rapid than the feed movement because of the fact that for the return movement the screw 33 is driven by the bevel gears 39 and 41, while for the feed movement the feed screw 33 is driven by the worm gears and, 37, which transmita. much slower rate of rotation. The connections are such as to rotate the worm wheel and the bevel gear 39 in opposite directions for trai'ismitting to the screw 33 the feed movement and the return movement, respectively.

The clutch members 36 and 40 are connected together to be actuated concurrently, so that when the clutch member 36 is connected with the worm wheel 35, the clutch member 40 will. be disconnected from the bevel gear 39, and vice versa. The means for connecting together and actuating the clutch members 36 and 40 include substan tially parallel levers 46 and 47, pivoted on the frame 12 and having a pivotal connection with the clutch members 36 and 40, respectively, as shown in the drawings The levers 46 and 47 extend upward and terminate in handle portions and are connected together by a connecting rod or link rod 48. For the, determination of the feed movement and of the return movement, respectively, collars 49 and 50 are shown as adjustably fixed on the rod 48 by set screws, and inward from the collar 49 toward the middle of the rod 48 is a sliding collar 51 spaced from the collar 49 by a coiled thrust spring 52 surrounding the rod 48. The nut 34 of the carriage 20 carries a clutch-actuating toe 53, which slides on the rod 48 and is adapted to engage with the collars 51 and 50.

In operation the feed movement is started by manipulating one of the levers 46 or 47 to bring the clutch member 36 into coiiperative relation with the worm wheel 35, as shown in Figs. 1 and 5. The feed screw 33, driven by the worm wheel 35, then feeds the carriage 20 along the frame 12 transversely of the table 11. hen the traveling toe 53 comes in contact with the sliding collar 51, the further feed movement of the carriage 20 compresses the spring 52 which acts as an energy-storing device and when this compression has become sufficient, the spring 52 acts 011 the fixed collar 49 to move the rod 48 longitudinally toward the left, as illustrated in Figs. 1 and 5 of the drawings, and the rod 48 actuates the levers 46 and 47, first, to disconnect the clutch member 36 from the worm wheel 35 and thereby stop the feed movement of the carriage 20, and, next, as the movement of the rod 48 is continued by the spring 52, to connect the clutch member 40 with the bevel gear 39 and thereby cause a reverse movement or return movement to be communicated to the carriage 20. As the return movement continues, the toe 53 comes in contact with the fixed collar or throw-out collar 50 and pushes the rod 48 in an opposite direction or toward the right, as illustrated in Figs. 1 and 5, and throws out or disconnects the clutch member 40 from the bevel gear 39 and thereby brings the can'iage to a stop, there being in this instance no spring or other device to continue the movement of the rod 48. Upon the completion of its return movement, the carriage 20 will remain stationary until it is given a feed movement by the manipulation of one of the levers 46 or 47. The collars 49. and 50 may be adjusted along the rod 48 to cause the feed movement and the return movement of the carriage to cease at any desired point.

Driving means or actuating means in common are provided for the feed shaft 38 and return shaft 42, and for the saw-actuating pulley 32. Such means include a main drive shaft 54 provided with a belt pulley 55 connected with the saw-actuating pulley 32 by a belt 56, and also provided with a cone pulley 57 connected by a belt 58 with asecond cone pulley 59 fixed on the return shaft 42, which, as above noted, is connected with the feed shaft 38 by the belt 43. To permit of the vertical adjustment, as hereinbefore de- 32 and 59, without interfering with the function of the belts 56 and 58, means are provided for raising and lowering or vertically adjusting the main shaft 54 in unity with the vertical adjustment of the frame 12. To this end, the main shaft 54 is located substantially above, or vertically upward from, a median position of the carriage 20, as will appear by placing Fig. 13 of the drawings above Fig. 5, and Fig. 14 above Fig. 3, and the main shaft 54 is journaled in shaft hangers 60, which are guided and adapted to slide vertically on supporting brackets 61. To vertically adjust the hangers 60 in unity with the frame 12, vertical screws 62 are journaled in the brackets 61 and have screwtln'eaded engagement with the hangers 60. At their lower ends the vertical screws 62 are geared by bevel. gears, as shown in Figs. 13 and 14, to a screw-actuating shaft 63 journaled on the brackets 61 and carrying a sprocket wheel 64 which is connected by a chain 65 with a second sprocket wheel 66 carried by a short shaft 67 geared by bevel gears, as shown in Figs. 1 and 5, to the transverse shaft 18, which, as above noted, actuates the lifting screws 16 for vertically adjusting the frame 12. From the above description it is evident that when the screws 16 are actuated to raise or lower the frame 20, the screws 62 will be also actuated to correspondingly raise or lower the shaft hangers 60, the various gears and screws having, of course, the proper relation one to another to produce these movements at uniform rates. Becanse'of the fact that by this arrangement the distances between the main shaft 54 and the shafts 25 and 42, respectively, are not varied by the vertical adjustment of the frame 12, no changes in the lengths of the belts 56 and 58 are required for the vertical adjustment of the frame 12. However, the sliding feed movement and return movement of the carriage 20 produce slight variations in distance between the saw-actuating pulley 32 and the main shaft 54, and the effect of these variations is eliminated and the sawactuating belt 56 kept tight by a take-up device or belt-tightener comprising an idler 68 carried by arms 69 pivoted on the main shaft 54 and pressed against the belt 56 by a weight '70 adjustable along a yoke arm 71 eX- tending from the arms 69.

For actuating the entire machine, including both driving and feeding the saw 21, a main driving pulley 7 2 is mounted on the main driving shaft 54 and is arranged to be connected therewith or disconnectedtherefrom at will by a lever 73 adapted to actuate a clutch of usual construction, as

. indicated in the drawings.

The work is supported on the table 11, i

and to facilitate cutting the work at difier-- ent desired angles slot-ted guide cleats 74 $5 scribed, of the frame 12, carrying the pulleys are provided are h ld in place by clamp bolts engaging usual T-slots in the table 11. The saw 21, as above described, is fed transversely of the table, but the saw and the table do not move relatively to each other in a direction longitudinal of the table. After making a cut, the work is moved up longitudinally of the table to a new position relatively to the saw for making another out. To facilitate this movement or adjustment of the work, elevating rollers are located in slots or openings extending transversely of the table 11 and normally lie slightly below the upper surface of the table and therefore out of contact with the work, which then rests on the table, but these rollers may be elevated or raised above the surface of the table so that the work will be supported on the rollers and may therefore be moved with ease longitudinally of the table and thereby adjusted relatively to the saw 21. The elevating rollers 75 are carried by levers 76 pivoted to the table 11 at the under side thereof and resting at their free ends on cams 77 carried by cam shafts 78 journaled below the table and provided at one end with lever arms 7 9. All the lever arms 79 are connected together by a connecting bar 80 for actuating the cams 79 concurrently to raise all of the rollers 75 at the same time. The bar 80 may be actuated either by a hand lever 81 pivoted atthe side of the table 11 or by a treadle 82 connected to the bar 80 by a link 83 and bell crank 8-1.

A saw-receiving groove 85 is provided transversely of the upper surface of the table 11 and receives the cutting edge of the saw 21. The fact that the saw 21 extends into the groove 85 enables the work to be completely out through and severed by the. saw, thereby producing smooth corners in the work. Because of the fact that the saw 21 moves only transversely of the table 11 and that there is no relative movement of the saw and table longitudinally of the table, the groove 85 does not in any respect interfere with the operation of the saw.

Means are provided for increasing the work-supporting capacity of the worksupporting table 11 so that slabs of stone of large size and projecting beyond the ends of the table can be handled. Such means comprise an extensible frame including side beams or side rails 86 and end worksupporting rollers 87, the ends of the beams or rails 86 being bent upwardly so that the rollers 87 are substantially on a level with the top of the table 11. supported and guided by lower anti-friction rollers 88 and upper anti-friction rollers 91, at the under side of the table 11, the lower rollers 88 being located at the under sides of the rails 86 adjacent to the ends of the table 11 and the upper rollers 91 being located the upper sides of the rails 86 inwardly from the lower rollers 88. This extensible frame is formed in two parts, one part at each end of the table, the two parts being united by slotted plates 89 overlapping the inner ends of the beams 86 of each part and adapted to be secured thereto by bolts 90. By loosening the bolts 90 the re spective end parts of the frame may be used independently and by tightening these bolts while the two parts of the frame are separated, the frame may be used alternately at opposite ends of the table 11, such frame forming an extension to the table capable of being drawn out at either end of the table, the rollers 87 facilitating the shifting or adjustn'ient of the work in the same manner as do the rollers 75.

In the modified construction illustrated in Figs. 15, 16 and 17 a slightly flexible sheet metal work carrier 92 is provided overlying the table 11. and supported thereon when the elevating rollers 75 are in lowered position and adapted to be supported on the elevating rollers 75 when such rollers are raised. In this construction the work is moved longitudinally of the table 11 by moving the work carrier 92 over the elevating rollers 7 The work carrier 92 is also adapted to form a worksupporting extension for supporting work which extends be yond the end of the table 11, as indicated in Figs. 15 and 16. Means are provided for moving the work support or work carrier 92 and for supporting the extending portion thereof. Such means comprise rails 93 similar to the rails 86, except that the rails are provided at their lower edges with gear teeth forming a rack, as shown in Figs. 16 and 17. The rails 93 are supported and guided by the rollers 88 and 91 in substantially the saTne manner as are the rails 86. The rack teeth of the rails 93 are engaged by pinions 94, located between the supporting rollers 88, which are shown as arranged in pairs, and these pinions are fixed on an actuating shaft 95 adapted to be actuated by a worm gear comprising a worm wheel 96 fixed on the shaft 95 and engaged by a worm 97 carried by a worm shaft 98 gearedfby bevel gears as shown, to a short shaft 99 provided with a hand crank 100.

hen the work carrier 92 is not employed the work is moved up to the saw directly by hand, but when the work carrier is provided the work is shifted by turning the crank 100. This work-carrying device further facilitates the shifting of heavy work. The beams 86 are The extensible work-supporting frame comprising the rollers S'T-and rails 86 and the work-carrying device comprising the carrier 92 and rails 93 may be interchangeably used in the same machine, according to convenience and the character of the work. The carrier sheet 92 is shown as cut away at one side to provide Space for the guide cleats T4,

employed for lining up the work. This work carrying device may be employed at one or both ends of the table 11 and may cover more or less of the surface thereof as desired.

It is obvious that various modifications may be made in the construction shown and above particularly described within the principle and scope of my invention.

I claim:

1. stone-sawing machine comprising a work-supporting table, a saw, means for supporting the saw in position to act on the work, means for actuating the saw, and an extensible work-supporting frame adapted to be extended from either end of the table, such frame comprising two parts adapted to be detachably connected, one part at each end of the table, and means by which the two parts of the frame may be connected together to move as a unit or may be disconnected one from the other for use independently.

2. A stone-sawing machine comprising a work-supporting table, a saw, means for supporting the saw in position to act on the work, means for actuating the saw, and an extensible work-supporting frame adapted to be extended from either end of the table, such frame comprising two parts adapted to be detachably connected, one part at each end of the table, and means by which the two parts of the frame may be connected together to move as a unit or may be disconnected one from the other for use independently, each part of the frame being provided with a work-supporting roller.

3. A stone-sawing machine comprising a work-supporting table, a saw, means for supporting the saw in position to act on the work, means for actuating the saw, elevating rollers for raising the work above the level of the table, and mechanism for raising the rollers above the surface of the table.

4. A stone-sawing machine comprising a. work-supporting table having a saw-receiving groove therein, a saw, means for supporting the saw with its edge in the groove, means for actuating the saw, elevating rollers for raising the work above the surface of the table, and mechanism for raising the rollers to positions above the surface of the table.

5. A stone-sawing machine comprising a work-supporting table, a saw, means for supporting the saw in position to act on the Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

work, means for actuating the saw, elevating rollers for raising the work above the surface of the table, and eccentrics adapted and arranged to raise the rollers.

6. A stone-sawing machine comprising a worlcsupporting table, a saw, means for supporting the saw in position to act on the work, means for actuating the saw, elevating rollers for raising the work above the surface of the table, levers carrying the rollers and adapted to raise the same, and eccentrics adapted to actuate the levers.

7. A stone-sawing machine comprising a work-supporting table, a saw, means for supporting the saw in position to act on the work, means for actuating the saw, elevating rollers for raising the work above the surface of the table, levers carrying the rollers and adapted to raise the same, eccentrics for actuating the levers, and other levers connected with the eccentrics to actuate the eccentrics.

8. A stone-sawing machine comprising a vertically adjustable frame provided with ways, a carriage movable on the ways, a saw carried by the carriage, a vertically adjustable shaft hanger supported independently of the frame, a main shaft journaled in the shaft hanger, means for feeding the carriage along the ways including a connection to the main shaft, means for actuating the saw including a connection to the main shaft, and means for concurrently vertically adjusting the frame and the shaft hanger, whereby the connections of the sawactuating means and of the carriage-feeding means with the main shaft are not disturbed by the adjustments of the frame.

9. A stone-sawing machine comprising a vertically adjustable frame provided with ways, a tool-supporting carriage movable on the ways, a vertically adjustable shaft hanger supported independently of the frame, a main shaft journaled in the shaft hanger, means for feeding the carriage along the ways including a connection with the main shaft, and means for concurrently vertically adjusting the frame and the shaft hanger.

In testimony whereof I have affixed my signature in presence of two witnesses.

WILLARD F. MEYERS. Witnesses:

WM. AsHLEY KELLY, BERNARD CowEN.

Washington, D. G.

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