US565468A

US565468A - canada

Info

Publication number: US565468A
Authority: US
Publication date: 1896-08-11
Anticipated expiration: 1913-08-11

Description

(No Model.) 3 Sheets'Sheet 1.

F. X. L'ANDRY. l STONE CUTTING MACHINE.

No. 565,468.. Paten-ted Aug. 11, 1896'.

cams Frans so, Puor-LT'na. WASHINGTON. o.

(No Moda.) 3 sheets-sheet 2.

F. X. LANDRY. STONE CUTTING MACHINE.

Patented Aug. 11, 1896.

www. ff

3 Sheets-Sheet"I 3.

L R D N A L X L M m STONE CUTTING MACHINE.

No. 565,468. Patented Aug. 11, 1896.

nlm.

UNITED STATES PATENT 'OFFICEa FRANCOIS XAVIER LANDRY, OF SHERBROOKE, CANADA, ASSIGNOR OF ONE-HALF 'IO JEAN BAPTISTE BIRON, OF STOKE, CANADA.

STONE-CUTTING MACHINE.

SPECIFICATION forming part of Letters Patent No. 565,468, dated August 11, 1896.

Application filed .Tune 22,1895. Serial No. 553,746. (No model.)

To @ZZ whom it W'ta/y con/cern:

Be it known that I, FRANCOIS XAVIER LAN- DRY, of the city and county of Sherbrooke, in the Province of Quebec, Canada, have invented certain new and useful Improvements in Stone-Cutting Machines; and I do hereby declare that the following is a full, clear, and exact description of the same.

The object of my invention isto provide a power-driven machine that will be capable of doing the work of cutting stones either in dressing, channeling, or any other operation in a more accurate and uniform manner and with greater speed than can be done by hand.

The invention may be said to consist in the combination and arrangement of parts set forth in the following description and pointed out in the claims, although the construction of such parts lmay be varied to a considerable extent without departing from the spirit of my invention.

The preferred construction of my invention is briefly as follows:

The carrying mechanism comprises a Vertical frame adapted to travel along a table portion which is' placed upon the surface of the stone to be cut, and the front side of the frame has guideways for a vertically-slidin g rod which is formed at its lower end with a socket to receive the cutting-tool, its upper end being adapted to have weights placed thereon.

To impart the required movement to the tool-if. e., to raise it and allow it to fall by its own weight- I prefer to use a wiper- 'wheel, which I mount in the frame in a positionv to act upon and operate the verticallysliding rod through alateral projection therefrom, with which the cams of such wiperwheel engage.

To secure a continuously even or uniform rotation of the wiper-wheel, I provide a yielding resistance which will exert its force iirst to assist the wheel in its operation of raising the tool and then to interfere with or resist its rotation from the time it releases the tool to allow such tool to drop until the wheel again commences to raise it. I also provide an improved automatically-reversible feed mechanism which is variable as to speed, for full comprehension of which, however, and

my invention in its entirety reference must be had to the annexed drawings, forming a part of this specification, wherein like symbols indicate corresponding parts.

Figure l is a front elevation of a stone-V cutting machine constructed according to my invention; Fig. 2, an end elevation of the '2, and a fourth standard 8 connects bar 6 with one side of the base about midwav between standards 3 3 and standard 7. u

In the rear face of cross-bar 4 a socket is formed to receive one end of a horizontal shaft 9, also bearing in a recess on the side of standard 7, in which it is held by retainingplate 10. Upon this shaft a wiper wheel Il is rigidly mounted in close proximity to standards 3 3. Midway between such wiperwheel and rear standard 7 two pinions l2 and 13 of small and large diameter, respectively, are loosely mounted and-connected to the shaft by feather and groove, and upon the rear end of the shaft either a driving-pulley or, as I consider preferable, a crank 14 is rigidly mounted.

A rod l5 slides vertically in guideways formed in the faces of cross-bars 4 and 5, in which it is held against displacement by retaining-plates Ib and 16C, and about onethird distance from the top of such rod is adj ustably secured a spindle 16, upon which is mounte da roller 17, adapted to project rearwardly between the radial projections of the wiper-wheel Il.

The tool-carrying rod l5 is preferably round, so as to allow of its being turned in its cross-head7 to be presently described, and thereby adjust the cutting edge of the tool to any angle relatively to the stone to be cut.

The cross-head in which the rod is set is IOC) preferably composed of a plate 16a of sufiicient length to extend across the face of the standards 3 3, being formed in one with spindle 16 and recessed to t such rod 15 on one side and retained loosely thereon by plate 16d, also fitting such rod on the opposite side', a set-screw 1be serving to secure or set the rod against rotation in the cross-head formed by such plates, and the cross-head itself in turn being held against rotation by bearing upon the face of the standards 3 3. The upper end of the rod has set upon it a weighted cap 18, secured in place by setscreW 18, which cap is interchangeable with other caps of greater or less weight, and the lower end of the rod is attened, as at 19', has an engaging dog 20 on its front face, and is formed with a socket 21 to receive the body or upperportion of the cutting-tool 23, which is notched, as at 22, to receive the engaging dog 2O and is held rigidly in place by setscrew 23, a channeling-chisel being shown as the cutting-tool for purposes of illustration.

Iprefer to construct the wiper-wheel 1l with rests 24 between the radial projections or cams 25 thereof, and as it is desirable for such wiper-Wheel to have a con tinuously-uniform rotation it is necessary to diminish the resistance of such rotation while the wheel is operating to raise the weighted tool and give resistance to the rotation when there is comparatively none from the tool, as will be the case when a cam has released the tool and before the following cam commences to raise it. To eifectthia I have devised the following means: Upon the forward face of standard S are projections 26 26 and 27, and upon the side of cross-bar G, in close proximity to such projection 27 on standard 8, is a projection 28, these projections forming a guideway to retain a verticallysliding rectangular bar 29 loosely in position.

The bar 29 is in the form of an invert-ed T, with one half 30 of its cross-arm horizontal and the other half' odset, as at 3l. Upon the rear side of the wiper-Wheel llare four pin projections 32, each set rigidly at a point intersected by a radial line extending from the axis of the wheel to the point on the periphery thereof where the rests terminate and camscommence, and the cross-arm 30 31 is caused to bear upon the left-hand one (see 1 Fig. 3) of the two uppermost pin projections 32, preferably by a bow-spring now to be described.

The upper end 33 of the bow-spring is perforated to take over a downwardlyprojecting bolt 35, and its lower end bears upon the upper 'side of the half 31 of the cross-arm of the vertically-sliding bar 29, where it is located in the recess formed by the offset portion.

To regulate the pressure of the bow-spring,

the bolt 35 is screw-threaded and anut36 set thereon, againstlwhich the upper end of such l bow-spring bears, and by the lowering or raising of the nutthe resistance of the spring canbe increased or diminished at will.

As an auxiliary force, to assist the weighted cap 18, a bracket 37 is rigidly secured to the top of the rear face of standard 7, and to this bracket is pivotally connected one end of a flat spring 38, which extends first rearwardly for a short distance and is then bent to extend forward under an arch 39 and thence a sufficient distance to project through an opening 42 in the upper end of a standard 43, the arch having its ends slotted, as at 40, and secured to the sides of standard 7 by bolt 41, so as to be adjusted vertically thereon. The standard 43 is also preferably made vertically adjustable by having its lower end longitudinally slotted, as at 44, to receive a set- `screw 45, passing therethrough and taking into the crosshead.

l will now'describe the table and feed device that I preferto use and the means for automatically reversing the direction of travel imparted by such feed device and for adjusting the carrier-frame transversely of its line `of travel.

The table 4G has guides 47 and supporting` ledges 48 formed upon its surface, the adjacent edges of the guides being each provided with a lateral extension 47 a at'the top.` Upon these guides and ledges slide a pair of flanged rails 49, connected rigidly together by four

cross-pieces

50, 51, 52, and53, two of which, 51 and52, are each provided with a groove to receive the extensions 47 of the guides. From the under side of the base 2 of the frame are downwardly-projecting pieces 56, provided with flanges 57 to, take under the iian ges of the rails 49, this arrangement guard ing effectively against vertical displacement of the several parts relatively to each other and at the same time allows the carrier-frame to slide along the rails and the whole be adjusted transversely of the table. This lateral adjustment is preferably effected by means of a screw-bolt 58, which, While free to rotate, is held against longitudinalmovement by integral portion 59 of the table, and `takes into a screw-threaded opening 59L in the rear rail, so that by the rotation of the screw-bolt by crank-handle 60 thereon the jframe, with the rails, can receive any rcquired adjustment transversely to the line of travel of the tool-carrying frame.

` The feed device consists of arack (hforrned ,integral with the

cross-pieces

50, 51, 52, and 153, that connect the railstogether, its toothed face projecting slightly above the surface of Ithe rails. With this rack engages a pinion 62, mounted on and connected by afeather land groove to a horizontal shaft 63, carried .loosely in bearings formed in the front and rear sides of open base 2 ofthe frame. This `pinion can, when desired, be shifted by lever 34, pivoted at G5 to the base, out of engage- Inient with rack 61.

Bythe rotation of pinion G2 while in engagement with rack 61 the frame and with it the cutting-tool will be caused to slide along the rails 49. To impart the necessary rota- IOO IIO

tion to the pinion by the same power andof gears, so as to accommodate the speed at which the tool-operating mechanism rotates to the comparatively slow travel required for the feed. The train of gears are Acarried in a bracket composed of two side pieces 66 67, mounted loosely at one end upon shaft 63 and at the other end connected together by a short spindle 68, extending between them. Upon this spindle a large gear-wheel 69 and small one 79 are loosely mounted, the small one being made in one with the large one and intermeshing with an idler-wheel 7l,mounted upon a stub-spindle carried by the one 66 of the side pieces, this idler 69 in turn intermeshing with a gear-wheel 7 2 about twice the size of gear-wheel 70 and mounted rigidly upon the shaft 63.

A lateral extension 7 3, terminating in a handle 74, extends approximately at right angles from one, 66, of the side pieces, and carries a gear-wheel 7 3 in a position to continually intermesh with gear-wheel 69.

When it is desired to cause the carrierframe to travel in the direction indicated by arrow A in Fig. 3, the bracket will have to be turned on shaft 63 till the gear-wheel 69 intermeshes with the pinion 13 if comparatively high speed is required, and should less speed be required the

pinions

12 and 13 are moved along the shaft 9 till the one 12 will be in a position to intermesh with gear-wheel 69. Vhen it is desired to reverse the direction of travel, the bracket is tilted till gear-wheel 7 3a intermeshes with either of the

pinions

12 or 13. This reversal of the direction of travel of the carrier-frame I prefer to effect automatically as follows: A rocker 74a is pivoted inside the open base 2., upon a short spindle 75, extending from a support 76 therefor on the rear side ofsuch base. A rod 77 is connected at one end to the extension 73, at the other end to the base 2, and about midway of its length to one end of the rocker 742L by a link 7 8.

Two stops 79 and SO are carried by and adjustable along the rear rail. They are constructed in U form, the respective legs 7 9 79b and 30n 8Ob of each extending upward on either side of such rail, the ones 7 9 and 8On being each extended in width sufficiently to cross the line of travel of the rocker 74, and the other legs, 7 9b and 80", each having a screw-threaded opening therethrough to receive clamping-screws 7 9C and 80C, whereby the stops can be secured iirmly upon the rail after having been adjusted along same to the points where it is required that the direction of travel be reversed.

In order to allow the tableof the machine to rest steadily upon an uneven or slanting surface, l provide adjusting devices or levelers in the form of screw threaded bolts 81, adapted to take through vertical screwthreaded openings in the table and bear upon the surface of the stone being operated upon.

To cut the surface of a stone with amachine constructed according to the preceding description, the tool is first set in place in the socket of rod 15, the set-screw 16C loosened, the rod turned to adjust the edge of the tool to the required angle, and weights added to the top of the rod to increase the weight or strength of the blow to be delivered, according to the hardness of the stone or depth to which it is to be cut. The stops 79 and 8O are then adjusted to a distance apart equal to the length ofthe surface to be operated upon and the frame moved toward one end, say, looking at Fig. 4, the right-hand end, till the rocker 7 4a is engaged by stop 80, which will tilt the rocker, and through it and its connection the gear-wheel 69 will be thrown into mesh with, say, pinion 12. The pinion 62 should then be moved into engagement with rack 61, when, upon crank 14 being rotated, such pinion will be caused, through shaft 9, train of gears 69 70 7l 72, and shaft 63, to revolve in the necessary direction to cause the carrier-frame to travel in the direction indicated by arrow A. At the same time the wiper-wheel, being rotated with shaft 9, upon which it is rigidly mounted, will be raising the tool and allowing it to drop as the cams 25 and rests 24 alternately come in line with the roller of rod 15. The rotation of the wiper-wheel is made continuously uniform, notwithstanding the ever-varying strain upon it, by means of the spring-actuated T-bar 29 of the equalizing device, already described, bearing upon and resisting the rotation of the wiper-wheel through one of the pin projections 32 thereon, which of course rises as one of the rests 24 is passing the roller of rod 15, and, after such pin projection has passed the vertical, assisting the rotation of the wiper-wheel by bearing upon such pin projection in its downward course while the following cam is raising the tool.

Itis obvious that by mounting the stone upon a movable carrier and securing the table of the machine thereto that the tool carrying` and operating mechanism could be stationary and the same work done without changing any of the parts of either the table or the carrier-frame or their relation to one another.

Having now described the nature and what l believe to be the best embodiment of my invention, l claim as new- 1. ln a machine for cutting stones, the combination of a frame, a rod carried freely in bearings in such frame, a wiper-wheel with projections upon one face thereof, such wiperwheel being suitably mounted in the frame and having an operative connection with such rod, a yielding-resistance devicev carried by the frame and having one end adapted to beal.1

IOO

IIO

upon such projection from the wiper-Wheel as such Wiper-wheel rotates, for the purpose set forth.

2. In a machine for cutting stones, the coinbination of a frame, a rod ,carried freely in bearings in such frame, a Wiper-wheel with projections upon one face thereof, such wiperwheelbeing suitably mounted inA the frame and having an operative connection with such rod, a yielding-resistance device, consisting of a bar of inverted-T form, such bar being guided in such fralne and having its crossarm adapted to bear upon one of such projections from the Wiper-wheel as such Wiperwheel rotates, and a bow-spring having `one end connected to the frame and its other end bearing upon said bar, for the purpose set forth.

3. Inamachine for cutting stones, the combination of a frame, a rod carried freely in bearings in such frame, a Wiper-wheel with projections upon one face thereof, such wiperwheel being suitably mounted in the frame and having an operative connection with such rod, a yielding-resistance device consisting of a bar of inverted-T form with one half of its cross-arm horizontal and the other half offset, such bar being guided in such frame and havingits cross-arm adapted to bear upon one of such projections from the wiper-Wheel as such wiper-wheel rotates, and a bow-spring having one end connected to the frame and its other end bearing upon said bar, for the purpose set forth.

4. In amachine for cutting stones, the combination of a frame, a rod carried freely in bearings in such frame a wiper-Wheel with projections upon one face thereof, such wiperwheel being suitably mounted in the frame and having an operative connection with such rod, a yielding-resistance device consisting of a bar of inverted-T form guided in such frame and having its cross-arm adapted t0 bear upon one of such projections from the wiper-wheel as such Wiper-wheel rotates, and a bow-spring having one end adapted to bear upon said cross-arm and its other end perforated to take over a screw-threaded bolt, carried rigidly by said frame, and bear against a nut movable upon said bolt, for the purpose set forth.

5. In a machine for cutting stones, the coinbiuation of a frame, a tool-carrying rodearried by such frame a wiper-wheel suitably mounted in the frame, an operative connection between such Wiper-wheel and rod, a device for assisting the fall of the rod consisting of a flat spring curved at one end, pivotally connected at its curved end to the top of the frame, an arch adjustably connected to such frame and adapted to straddle such spring near such curved end, and the straight end Vof such spring bearing upon such rod when it is raised, and means for operating such wiper-wheel for the purpose set forth.

6. In a machine foreutting stones, the cornbination of a stationary table portion carrying adjustable rails and a rack, a frame having a sliding connection with such rails, a rotatably-adjustable vertical rod carried freely in bearings in such frame, a cross-head sccured upon such rod, awiper-whcel mounted rigidly upon a horizontal shaft carried loosely in bearings in such frame about midway of its length, an equalizing device adapted to act upon such wiper-wheel, a feed device consistin g of two pinions of different sizes mounted upon and connected to such shaft by a feather-and-groove connection, a horizontal shaft mounted near the base of such frame, a gear-wheel mounted rigidly upon such latter shaft, a train of gears connecting one of the gears on the former shaft with the gear on the latter shaft, a pinion mounted upon and connected to such latter shaft by a feather-and-groove connection, such pinion adapted to be adjusted into and out of engagement with the rack, a device for assisting the fall of such rod, means for adjusting such rails with relation to the table and for adjusting the pinion into and out of engagement with the rack, for the purpose set forth.

'7. In a machine for cutting stones, the coinbination of a stationary table portion carrying adjustable rails and a rack, a frame having a sliding connection with such rails, a rotatably-adj ustable vertical rod carried freely in bearings in such frame, a cross-head secured upon such rod, a wiper-wheel mounted rigidly upon a horizontal shaft carried loosely in bearings in such frame about midway of its length, an equalizing device adapted to act upon such wiper-wheel, a feed device consisting of two pinions of different sizes mounted upon and connected to such shaft by a feather-and-groovc connection, a horizontal shaft mounted near the base of such frame, a gear-Wheel mountedrigidly upon such latter shaft, a train of gears connecting one of the gears on the former shaft with the gear on the latter shaft, a pinion mounted upon and connected to such latter shaft by a feather-and-groove connection, such pinion adapted to be adjusted into and out of cngagement with the rack, a device for assisting the fall of such rod, consisting of a flat spring connected at one end to such frame, an arch adj ustably connected to such frame so as to straddle such spring the free end of such spring being located in a position to bear upon such rod when it is raised, means for adjusting such rails with relation to the table and for adjusting the pinion into and out of engagementwith the rack, for the purpose set forth.

8. In a machine for cutting' stones, the combination of a stationary table portion carrying adjustable rails and a rack, a frame having a sliding connection with such rails, a rotatably-adjustable vertical rod carried freely in bearings in such frame, a cross-head secured upon such rod, a wiper-Wheel mounted rigidly upon a horizontal shaft carried loosely in bearings in such frame about midway of its length, an equalizing device consistingof IOO a yielding resistance carried by the frame, adapted to bear upon a projection from such Wiper-Wheel a feed device consisting of two pinions of different sizes mounted upon and connected to such shaft by a feather-andgroove connection,ahorizontal shaft mounted near the base of such frame, a gear-Wheel mounted rigidly upon such latter shaft,a'train of gears connecting one of the gears on the former shaft With the gear on the latter shaft, a pinion mounted upon and connected to such latter shaft by a feather-and-groove connection, such pinion adapted to be adj usted into and out of engagement With the rack, a device for assisting the fall of such rod, means for adjusting such rails With relation to the table and for adjusting the pinion into and out of engagement With the rack, for the purpose set forth.

9. In a machine for cutting stones, the combination of a stationary table portion carrying adjustable rails and a rack, aframe having a sliding connection With such-rails, a rotatably-adjustable vertical rod carried freely in bearings in such frame, a cross-head secured upon such rod, a Wiper-Wheel mounted rigidly upon a horizontal shaft carried loosely in bearings in such frame about midway of its length, an equalizing device consisting of a yielding resistance carried by the frame adapted to bear upon a projection from such Wiper-Wheel a feed device consisting of two pinions of different sizes mounted upon and connected to such shaft by a feather-andgroove connection,ahorizontal shaft mounted near the base of such frame, a gear-Wheel mounted rigidly upon such latter shaft,a train of gears connecting one of the gears on the former shaft with the gear on the latter shaft, a pinion mounted upon and connected to such latter shaft by a feather-and-groove connection, such pinion adapted to be adjusted into and out of engagement With the rack, a device for assisting the fall of such rod, consisting of a flat spring connected at one end to such frame, an arch adj ustably connected to such frame so as to straddle such spring the free end of such spring being located in a position to bear upon such rod When it is raised, means for adjusting such rails with `relation to the table and for adjusting the pinion into and out of engagement with the rack, for the purpose set forth.

lO. In a machine forcutting stones,the combination of a stationary table portion carrying Wiper-Wheel, a feed device consisting of two.

pinions of different sizes mounted upon and connected to such shaft by a feather-andgroove connection, a horizontal shaft mounted near the base of such frame, a gear-Wheel mounted rigidly upon such latter shaft, a train of gears connecting one of the gears on the former shaft with the gear on the latter shaft, a pinion mounted upon and connected to such latter shaft by a feather-and-groove connection, such pinion adapted to be adjusted into and out of engagement With the rack, a device for assisting the fall of the rod consisting of a flat spring curved at one end, pivotally connected at its curved end to the top of the frame,an arch adj ustably connected to such frame and adapted to straddle such spring near such curved end, and the straight end of such spring bearing upon such rod when it is raised, means for adjusting such rails With relation to the table and for adjusting the pinion into and out of engagement With the rack, for the purpose set forth.

11, A miachine for cutting stones, consisting of a stationary table portion having two guides, two or more supporting-ledges, and a vertical bearing all of which being formed integral with the upper surface of said table portion; a screw-bolt carried rotatably in said bearing; adjustable flanged rails and a rack resting upon said supporting-ledges and connected rigidly together by two or more crossbars, two of which are adapted to have a sliding connection with such guides; a frame having a sliding connection with such rails, and a pair of downward projections, from the under side of the base thereof, provided With flanges adapted to take under the fianges of said rails; a rotatably-adj ustable vertical rod carried freely in bearings in such frame, a cross-head secured upon such rod, a Wiper- Wheel mounted rigidly upon a horizontal shaft carried loosely in bearings in such frame about midway of its length, an equalizing device adapted to act upon a projection from such Wiper-Wheel, a feed device consisting of two pinions of different sizes mounted upon and connected to such shaft by a feather-andgroove connection,ahorizoutal shaft mounted near the base of such frame, a gear-Wheel mounted rigidly upon such latter shaft, a train of gears connecting one of the gears on the former shaft with the gear on the latter shaft, a pinion mounted upon and connected to such latter shaft by a feather-and-groove connection and adapted to be adjusted into and out of engagement With the rack, a device for assisting the fall of such rod, and means for adjusting the pinion into and out of engagement With the rack, for the purpose set forth.

l2. A machine for cutting stones, consisting of a stationary table portion having two guides, tWo or more supporting-ledges, and a vertical bearing, all of which being formed x integral with the upper surface of said table portion; a screw-bolt carried rotatably in said bearing; adjustable flanged rails and a rack resting upon said supporting-ledges and con- IIO nected rigidly together by two or more crossbars, two of which are adapted to have asliding connection with such guides; a frame having a sliding connection with such rails, and a pair of downward projections, from the under side of the base thereof, provided with flanges adapted to take under the flanges of said rails; a rotatably-adjustable vertical rod carried freely in bearings in such frame, a cross-head secured upon such rod, a wiperwheel mounted rigidly upon a horizontal shaft carried loosely in bearings in such frame about midway of its length, an equalizing device adapted to act upon a projection from such wiper-wheel, a feed device consisting of two pinions of different sizes mounted upon and connected to such shaft by a feather-andgroove connection a horizontal shaft mounted near the base of such frame, a gear-wheel mounted rigidly upon such latter shaft, a train of gears connecting one of the gears on the former shaft with the gear ori1 the latter shaft, a pinion mounted upon and connected to such latter shaft by a feather-and-groove connection, and adapted to be adjusted into and out of engagement with the rack, a device for assisting the fall of such rod, consisting of a flat spring connected at one end to such frame, an arch adjustably connected to such frame so as to straddle such spring, the free end of such spring being located in a position to bear upon such rod when it is raised, and means for adjusting the pinion into and out of engagement with the rack, for the purpose set forth.

13. A machine for cutting stones, consisting of a stationary table portion having two guides, two or more supporting-ledges, and a vertical bearing, all of which being formed integral with the upper surface of said table portion; a screw-bolt carried rotatably in said bearing; adjustable flanged rails and a rack resting upon said supporting-ledges and connected rigidly together by two or more crossbars, two of which are adapted to have a sliding conn ection with such guides; a frame having a sliding connection with such rails,and a pair of downward projections,from the under side of the base thereof, provided with flanges adapted to take under the flanges of said rails; a rotatably-adjustable vertical rod carried freely in bearings in such frame, a cross-head secured upon such rod,a wiper-wheel mounted rigidly upon a horizontal shaft carried loosely in bearings in such frame about midway of its length, an equalizing device consisting of a yielding resistance carried by the frame, adapted to act upon a projection from such wiper-wheel, a feed device consisting of two pinions of different sizes mounted upon and connected to such shaft by a feather-andgroove connection ,a horizontal shaft mounted near the base of such frame, a gear-wheel mounted rigidly upon such latter shaft,a train of gears connecting one of the gears on the former shaft with the gear on the latter shaft, a pinion mounted upon and connected to such latter shaft by a feather-and-groove connection,and adapted to be adjusted into and out of engagement with the rack, a device for assisting the fall of such rod, means for adjusting the pinion into and out of engagement with the rack, for the purpose set forth.

14. A machine for cutting stones, consisting of a stationary table portion having two guides, two or more supporting-ledges, and a vertical bearing, all of which being formed integral with the upper surface of said table portion; a screw-bolt carried rotatably in said bearing; adjustable ilanged rails and a rack resting upon said supporting-ledges and connected rigidly together by two or more crossbars, two of which are adapted to have a sliding connection with such guides; a frame having a sliding connection with such rails, and a pair of downward projections, from the under side of the base thereof, provided with flanges adapted to take 'under the flanges of said rails; a rotatably-adjustable vertical rod carried freely in bearings in such frame, a cross-head secured upon such rod, a wiperwheel mounted rigidly upon a horizontal shaft carried loosely in bearings in such frame about midway of its length, an equalizing device consisting of a yielding resistance carried by the frame, adapted to bear upon a projection from such wiper-wheel, a feed device consisting of two pinions of different sizes mounted upon and connected to such shaft by a feather-and-groove connection, a horizontal shaft mounted near the base of such frame, a gear-wheel mounted rigidly upon such latter shaft, a train of gears connecting one of the gears on the former shaft with the gear on the latter shaft, a pinion mounted upon and connected to such latter shaft by a feather-and-groove connection, and adapted to be adjusted into and out of engagement with the rack, a device for assisting the fall of such rod, consisting of a flat spring connected at one end to such frame, an arch adjustably connected to such frame so as to straddle such spring the free end of such spring beinglocated in a position to bear upon such rod when it is raised, and means for adjusting such rails with relation to the table and for adjusting the pinion into and out of engagement with the rack, for the purpose set forth.

l5. In a machine for cutting stones, the combination of a stationary table portion carrying rails and a rack, a frame having a sliding connection with such rails, a rotatablyadjustable vertical rod carried freely in bearings in such frame, a cross head secured upon such rod, a wiper-wheel mounted rigidly upon a horizontal upper shaft carried loosely in bearings in such frame about midway of its length, an equalizing device adapted to act upon such wiper-wheel, a feed device consistin g of two pinions of different sizes mounted upon and connected to such upper shaft by a feather-and-groove connection, a horizontal lower shaft mounted near the base of IIO such frame, a gear-wheel mounted rigidly upon such lower shaft, a train of gears connecting one of the gears on the upper shaft with the gear on the lower shaft, such train of gears being mounted in a bracket mounted loosely upon such lower shaft, and adapted to be adjusted to cause such train of gears to engage one of the pinions carried upon such upper shaft, apinion mounted upon and connected to such lower shaft by a featherand-groove connection, and adapted to be adjusted into and out of engagement with the rack, a device for assisting the fall of the rod, means for adjusting such rails with relation to the table, for adjusting the pinion into and out of engagement with the rack, and for adjusting said bracket, for the purpose set forth.

16. In a machine for cutting stones,the combination of a stationary table portion carrying rails and a rack, a frame having a sliding connection with such rails, a rotatably-adjustable vertical rod carried freely in bearings in such frame, a cross-head secured upon such rod, a wiper-wheel mounted rigidly upon a horizontal upper shaft carried loosely in bearings in such frame about midway of its length, an equalizing device adapted to act upon such wiper-wheel, a feed device consisting of two pinions of different sizes mounted upon and connected to such upper shaft by a feather-and-groove connection, a horizontal lower shaft mounted near the base of such frame, a gear-wheel mounted rigidly upon such lower shaft, a train of gears connecting one of the gears on the upper shaft with the gear on the lower shaft such train of gears embodying two gear-wheels of different diameters and being mounted in abracket mounted loosely upon such lower shaft, and adapted to be adjusted to cause either of such gearwheels of different diameters of such train of gears to engage one of the pinions carried upon such upper shaft, a pinion mounted upon and connected` to such lower'shait by a featherand-groove connection, and adapted to be adjusted into and out of engagement with the rack, a device for assisting the fall of the rod, means for adjusting such rails with relation to the table, for adj Listing the pinion into and out of engagement with the rack, and for adj usting said bracket, for the purpose set forth.

17. In a machine for cutting stones,the combination of a stationary table portion carrying adjustable rails and a rack, a frame having a sliding connection with such rails, a rotatably-adjustable vertical rod carried freely in bearings in such frame, a cross-head secured upon such rod, a wiper-wheel mounted rigidly upon a horizontal upper shaft carried loosely in bea-rings in such frame about midway of its length, an equalizing device consisting of a yielding resistance, carried by the frame, and adapted to act upon a projection from such wiper-wheel, a feed device consisting of two pinions of different sizes mounted upon and connected to such upper shaft by a feather-and-groove connection, a horizontal lower shaft mounted near the base of such frame, a gear-wheel mounted rigidly upon such lower shaft, a train of gears connecting one of the gears on the upper shaft with the gear on the lower shaft, such train of gears embodying two gear-wheels of different diameters and being mounted in a bracket mounted loosely upon such lower shaft, and adapted to be adjusted to cause either of such gear-wheels of different diameters, of such train of gears to engage one of the pinions carried upon such upper shaft, a pinion mounted upon and connected to such lower shaft by a feather-andgroove connection, and adapted to be adjusted into and out of engagement with the rack, a device for assisting the fall of the rod consisting of a flat spring curved at one end, pivotally connected at its curved end to the top of the frame, an arch adjustably connected to such frame and adapted to straddle such spring near such curved end, and the straight end of such spring bearing upon such rod when it is raised, means for adjusting such rails with relation to the table, for adjusting the pinion into and out of engagement with the rack, and for adjusting said bracket, for the purpose set forth.

18. In a machine for cutting stones,the combination of a stationary table portion carrying rails and a rack, a frame having a sliding connection with such rails, a rotatably-adjustable vertical rod carried freely in bearings in such frame, a cross -head secured upon such rod, a wiper-wheel mounted rigidly upon a horizon tal upper shaft carried loosely in bearings in such frame about midway of its length, an equalizing device consisting of a yielding resistance, carried by the frame, and adapted to act upon a projection from such wiper-wheel, a feed device consisting of two pinions of .different sizes mounted upon and connected to such upper shaft by a feather-and-groove connection, a horizontal lower shaft mounted near the base of such frame, a gear-wheel mounted rigidly upon such lower shaft, a train of gears connecting one of the gears on the upper shaft with the gear on the lower shaft, such train of gears embodying two gear-wheels of different diameters and being mounted in a bracket mounted at its lower end loosely upon such lower shaft, and being adaptedto be adjusted to cause either of such gear-wheels of different diameters, of such train of gears, to engage one of the pinions carried upon such upper shaft, a pinion mounted upon and connected to such lower shaft by a feather-andgroove connection, and adapted to be adjusted into and out of engagement with the rack, a device for assisting th fall of the rod consisting of a flat spring curved at one end, pivotally connected at its curved end to the top of the frame, an arch adj ustably connected to such frame and adapted to straddle such spring near such curved end, and the straight end of such spring bearing upon such IIO rod when it is raised, means for automatically adjusting such bracket, consisting of a rocker pivoted to the base of said frame, a rod having a sliding connection at one end to said bracket and being pivotally connected at its other end to said base, a link connecting said rod and rocker and a pair of engaging stops carried by one of such rails and with which said rocker is adapted to engage and means for adjusting the pinion into and out of engagement with the rack, for the purpose set forth.

H19. A machine for cutting stones, consisting of a stationary table portion having two guides, two or more supporting-ledges, and a vertical bearing formed integral with the upper surface of said table portion; a screwbolt carried rotatably in said bearing; adj ustable flanged rails and a rack rest-in g upon said supporting-ledges and connected rigidly together by two or more cross-bars, two of which are adapted to have a sliding connection with such guides; a frame having a sliding connection with such rails, and a pair of downward projections from the under side of the base thereof, provided with flanges adapted to take under the flanges of said rails; a rotatably-adjustable vertical rod carried freely in bearings in such frame, a cross-head secured upon suoli rod, a wiper-wheel mounted rigidly upon a horizontal upper shaft carried loosely in bearings in such frame about midway of its length, an equalizing device consisting of a yielding resistance carried by the frame and adapted to act upon a projection from such wiper-wheel, a feed device consisting of two pinions of different sizes mounted upon and connected to such upper shaft by a feather-and-groove connection, a horizontal lower shaft mounted near the base of such frame, a gear-wheel mounted rigidly upon such lower shaft, a train of gears connecting one of the gears on the upper shaft with the gear on the lower shaft such train of gears embodying two gear-wheels of diiferent diameters and being mounted in a bracket mounted at its lower end loosely upon such lower shaft, and being adapted to be adjusted to cause either of such gearwheels of different diameter, of such train of gears, to engage one of the pinions carried upon such upper shaft, a pinion mounted upon and connected to such lower shaft bya feather-and-groove connection, and adapted to be adjusted into and out of engagement with the rack, a device for assisting the fall of the rod consisting of a flat spring curved at one end, pivotally connected at its curved end to the top of the frame, an arch adjustably connected to suoli frame and adapted to straddle such spring near such curved end, and the straight end of such spring bearing upon such rod when it is raised, means for automatically adjusting such bracket, consisting of a rocker pivoted to the base of said frame, a rod having a sliding connection at one end to said bracket and being pivotally connected at its other end to said base, a link connecting said rod and rocker and a pair of engaging stops carried by one of such rails and with which said rocker is adapted to engage, and means for adjusting the pinion into and out of engagement, with the rack, for the purpose set forth.

20. In a machine forcutting stones, the combination of a stationary table portion carrying rails and a rack, a frame having a sliding connection with such rails, a rotatably-adjustable vertical rod carried freely in bearings in such frame, a cross-head secured upon such rod, a wiper wheel mounted rigidly upon a horizontal upper shaft carried loosely in bearings in such frame about midway of its length, an equalizing device consisting of a yielding resistance carried by the frame and adapted to act upon a projection from such wiper-wheel, a feed device consisting of two pinions of diiferent sizes mounted upon and connected to such upper shaft by a featherand-groove connection, a horizontal lower shaft mounted near the base of such frame, a gear-wheel mounted rigidly upon such lower shaft, a train of gears connecting one of the gears on the upper shaft with the gear on the lower shaft, such train of gears embodying two gear-wheels of different diameters and being mounted in a bracket mounted at its lower end loosely upon such lower shaft, and being adapted to be adjusted to cause either of such gear-wheels of diiferent diameters, of such train of gears to engage one of the pinions carried upon such upper shaft, a pinion mounted upon and connected to such lower shaft by a feather-and-groove connection, and adapted to be adjusted into and out of engagement with the rack, a device for assisting the fall of the rod consisting of a ilat spring curved at one end, pivotally connected at its curved end to the top of the frame, an arch adj ustably connected to such frame and adapted to straddle such spring near such curved end, and the straight end of such spring bearing upon such rod when it is raised, means for automatically adjusting such bracket, consisting of a rocker pivoted to the base of said frame, a rod having a sliding connection at one end to said bracket and being pivotally connected at its other end to said base, a link connecting said rod and rocker, a pair of engaging stops constructed of U form, one leg of each stop being extended in width and the other leg bored and screw-threaded to receive a thumb-screw, and said stops being located with one leg of each on either side of one of said rails the leg of extended widthbeing upon the inside thereof in orderto be engaged by said rocker and means for adjusting the pinion into and out of engagement with the rack for the purpose set forth.

Sherbrooke, Quebec, 7th day of J une, 1895.

FRANCOIS XAVIER LANDRY.

In presence of- T. A. BoURoUn, ALFRED PARADIS.

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