US510080A - Apparatus for rolling glass - Google Patents

Description

(No Model.)

MILLER.' APPARATUS POR ROLLING GLASS Sheets-Sheet 1.

Patented Dem l i I L.-- he he Il HHMi l lll HHIIHII Il' l x 1:11,. 1H: mmomu. umomurkma consum'.

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(No Model.) 7 Sheets-Sheet 2. N. M. MILLER. APPARATUS FOR ROLLING GLASS.

Patented Dec. ,5, 189s.

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(No Model.)

N. M. MILLER. APPARATUS P0P ROLLING GLASS.

No. 510mm). Patented DAG. L, 139s.

f 1 l I n Il @noauto/a AMV Tri-E NAYDNAL LmloGRAPnmm COMPANY.

(No Model.)

. 7 Sheets-Sheet 6. N. M. MILL-ER. l APPARATUS POR ROLLING GLASS.

-Patented Dee. 5, 1893.

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No. V510,080. Patented Dec. 5, 1893.

a6' af bz w17@ @oom A STATES NILES MILLER, OF PHILADELPHIA, PENNSYLVANIA.

APPARATUS FOR ROLLING e-LAss.

SPECIFICATION forming part of Letters Patent No. 510,080, dated December 5,1893. p

Application tiled January 4, 1893. Serial No. 457,271. (No model.)

.To all whom it may concern:

Be it known that I, NILES M. MILLER, a resident of Philadelphia,in the countyof Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Apparatus for Rolling Glass; and I do hereby declare thefollowing to be a full, clear, and exact description of the invention, such as will enable others skilled 1n the art to which it appertains to make and use the same.

My invention relates to animprovement in machines for rolling glass.

Heretofore in the manufacture of plate glass it has been customary to roll the surface of the same for the purpose of flattening it. In such prior machines the glass was rolled on one side by passing lit under a roll and then turned and again passed under the same roll in the reverse direction. With such a machine, when the plate of glass is subjected to the second rolling, the warmer end of the plate or that end which passed under the roll last, is presented to the roll first, so that that portion of the plate which was first subjected to the action of the roll, is the last to be pressed at the second passage of the plate under the roller. By thus treating the glass plate, it will be seen that the end of the plate which first reaches the roller will become chilled before it reaches said rollerl at the second passage under the same, and is therefore liable to be broken. This liability of breakage of the glass plate renders machines as heretofore constructed, defective and their employment very expensive.

It is the object of my present invention to obviate these defects of machines for rolling glass as previously constructed and to construct and arrange such a machine that a plate of glass can be rolled on both sides ata single passage thereof through the machine.

A further object is to construct a machine for rolling glass in such manner that both faces of the plate can be subjected successively to varying pressures.

A further object is to provide simple and efficient means for turning the glass plate under treatment.

A further object is to produce simple and eiicient devices whereby to automatically lock the glass plate during the turning of the same and automatically unlocking it when it shall have been turned.

A-further object is to construct the machine in such manner that the glass plate or sheet to be treated, can be introduced into the machine from either end thereof, and so that it can be ejected fro-m either end thereof, from which it can be introduced into the annealing furnace without the necessity of turning the machine.

A further object is to providea glass rolling machine with an improved table for supporting the plate or sheet of glass to be treated.

A further object is to construct the table of a glass rolling machine in such manner that it will retain heat a requisite length of time to prevent the too rapid cooling of the glass plate or sheet supported thereon.

A further object is to so construct a table for a glass rolling machine that it may be adapted for smooth or a gured surface on the glass plate to be treated.

A further object is to produce a table which shall be of simple construction, easy to asselnble and manipulate and which shall be effectual in the performance of its functions.

A further object is to provide said table with simple and efficient devices for preventing the glass from spreading and running over the sides of the table, said devices being constructed and arranged in such manner that they will not interfere with the passage of the table and its contents under the pressing rollers.

A further object is to construct a glass rolling machine with mechanism so constructed and arranged that the table and its contents will be effectually and automatically introduced into the machine and the glass plate rolled on one side; so that, after being rolled on one side the plate of glass will be automatically turned over and so that after being thus turned over, it will be automatically carried forward and passed under other rollers to press the other side of said plate of glass.

A further object is to provide a simple gearing for a glass rolling machine, whereby the various operations thereof can be efciently accomplished and whereby power will be applied to both ends of the rollers, and thus IOC cause said rollers to revolve freely and without liability of binding.

Afurther object is to produce a machine for rolling plates or sheets of glass, which shall be automatic in its operation and effectual in the performance of its functions.

Vith these objects in View the invention consists in the combination in a glass rolling machine, of rollers constructed and arranged in such manner as to successively roll a plate of glass on both sides.

lt also consists in the combination in a glass rolling machine, of devices constructed and arranged to turn a plate or sheetof glass,and rolls arranged at opposite ends of said turning devices, whereby to roll both faces of a sheet or plate of glass at a single and continuous passage thereof through the machine.

It also consists in the combination in a glass rollingmachine, of a series of rolls constructed and adapted to successively roll a plate of glass with increasing pressures.

It also consists in the combination in a glass rolling machine, of a table constructed in such manner as to receive and retain heat-contain ing material.

It also consists in the combination, in a glass rolling machine, of atable made of sections united together.

It also consists in the combination in a glass rolling machine, of a movable table made of sections, each section having a receptacle for heat retaining material, and a removable surface plate.

The invention also consists in certain novel features of construction and combinations and arrangements of parts as hereinafter set forth and pointed out in the claims.

ln the accompanying drawings: Figure l is a side elevation. Figs. 2 and 3 are transverse sectional views. Fig. et is a plan View illustrating the gearing. Figs. 5,6, 7, 8, 9, l0, 11 and l2 are detail views.

A represents the main frame of the machine.

A A are axles and A2 Wheels, adapted to run on a suitable track A7, whereby the machine will be rendered portable.

From each end or side of the machine, platforms A4 project and are suitably braced by means of braces .Ai-each of said platforms comprising A-shaped Ways A, for the reception of similar grooves in a table hereinafter described. On one or the other of the platforms the table B, which supports the molten glass to be` rolled, is placed, and the other platform serves to support the table and glass after they shall have passed through the machine, and the glass shall have been rolled.

The table B is composed of a number of sections a, as shown in Figs. 6 and 7. Each section a of the tableB is provided at its edges with depending flanges a', thus producing a chamber or receptacle for the reception of soap-stone or other heat retaining material, which latter is retained in place in the cham ber or receptacle by means of plates a2, and

`bottom of the face plate B.

the several sections or blocks a. are secured together by means of bolts a3. The sections co at the sides of the table are provided with depending lugs a4 having V-shaped grooves d5 therein fora purpose hereinafter explained. The lugs d4 are provided With laterally projecting ears a, to which one edge of the bottom plates u?, a7 are secured, the other edge of the plates co7 being secured to an inwardly projecting portion of the depending Iianges a.

On top of the table B is a face plate B', which may be made in sections the same as the table itself if desired,-said face plate being removable, so that a smooth or figured plate may be employed, according to the kind of surface it is desired to produce on the glass plate to be treated. is desired that the glass plate, after it shall have been rolled, shall have a smooth surface, asinooth face plate B will be employed and if it be desired that the glass shall have a decorated or gured surface, a face plate B having such a surface Will be accordingly employed. In the upper face of the table, dovetailed grooves b are made, for the reception of similarly shaped tongues b made on the By this means the face plate B Will be securely but rexnovably held by the table B.

In proximity to the edges of the face plate B', grooves h2 are made and in these grooves, strips b3 are loosely titted and adapted to project above the surface of said face plate, as most clearly shown in Figs. l0 and ll. The purpose of the strips b3 is to prevent the molten glass when it is placed on the face plate, from spreading and running off the same. Located in the grooves b2 under the strips h3, are springs b4 adapted to retain the strips above the surface of the face plate, but permit the tops of said strips to be depressed when the table B and its contents pass under the rolls to press the glass, as presently explained. Each spring 641s preferably made semi-elliptical in form and secured at its centei` to the bottom of the strip b3 and its ends bear in the bottom of the groove b2. The ends of the springs are made with elongated slots h5 for the accommodation of headed pins b6 secured to the face plate B.

At each end of the frame A, a semi-circular series of rollers c are mounted and supporta cylinder or frame C, on which rollers said cylinder is adapted to turn, as explained further on,-the heads C of said cylinder having openings c to permit the table B and its contents to enter said cylinder. In proximity to the ends of the cylinder C, and over the platforms A4, rolls, D, D', D2, D3, are mounted in sliding boxes d, under which rolls the table B is passed and by means of which the glass plate or sheet on said table, is pressed. Each journal box d is provided with` an internally screwthreaded enlargement d for the reception of a screwthreaded shaft d2 mounted in the housing or framework d3. To the lower end of each shaft cl2, a bevel pinion d4 is fixed That is to say, when it i IOS IIO

' vertical shafts and pinions for each roll.

and adapted to mesh with a bevel`pinion d5 carried by a horizontal shaft d? mounted in At the inner end of each the housing d3. horizontal shaft d6, a bevel pinion all is secured and adapted to mesh with a bevel pinion d8 at the lower ends of vertical shafts C19, there being, of course, two such horizontal and At the upper ends of the vertical shafts dg, bevel pinions d10 are fixed, and adapted to mesh with bevel pinions du, carried by horizontal shafts i112, each horizontal shaftbeing adapted to receive a crank arm d, by means of which it is turned. From this construction and arrangement of parts it will be seen-that by operating the crank arms dw the journal boxes d and consequently the rolls D, D', D2, D3, which they carry, can be raised or lowered and said rolls made to approach or recede from the platforms, asl desired, according to the thickness ofthe glass plate or sheet to be operated upon. In practice I propose to arrange said rolls at successively varyingdistahces from the platforms, or, more properly speaking, from the tables B,-so that the glass plate will be continuously pressed to a greater extent as it passes through the machine. For instance, supposing that the table containing the glass be inserted at the right hand end of the machine,the glass .will first be subjected to pressure by the roll D, and then to greater pressure by the roll D', and after passing through the cylinder C, it will be subjected to a greater pressure under the roll D2 than when it passed under the roll D', and when it passes .under the roll D3, it

will be subjected to a still greater pressure.y

The shaft of each roll carries a bevelgear e, at each end, so that power can be applied to both ends of each roll and thus cause them to rotate freely and without binding.` In

proximity to each end of each roll, verticalA shafts e' are mounted in suitable bearings e2 and on the upper end of each shaft e',abeve1 gear e3 is mounted and adapted to mesh with the bevel gears e, carried by the shafts of the rolls. The gears e3, of course, revolve with the shafts e', but are adapted to have a sliding movement thereon, so as to permit of the vertical adjustment of the rolls above de.- scribed. The lower end of each shaft e has a bevel gear e4 fixed to it, with each of which, bevel gears e5, e6 mesh. The bevel gears e5, e6 are carried at the ends of horizontal shafts e7, es, under the various rolls D, D', D2, D3.

The shafts e7, e8 at each end of the machine,

are provided, respectively, with gears e9, ew, and between the pairs of shafts c7, e8, shafts e, cl2, are respectively located and carry gears cl3 adapted to mesh with the gears e, elo, whereby to transmit motion in the same direction to both shafts e7, e8, and ultimately, through the gearing above described, to the rolls D, D', D2, D3. On one end of each shaft e, cl2, a bevel pinion e14 is xed and adapted to mesh with bevel gears @15, carried by along horizontal shaft e, whereby to transmit motion from the shaft en to the shaft 61.2. Motion is imparted tothe shaft el1 by means of a motor, preferably an electric motor E,-the armature of which is carried by the shaft en. A clutch @17 is preferably located on the shaft e, whereby to throw the motor into and out of gear with the gearing which drives the rolls. .At each end of the openings c' in the heads O' of the cylinder C, are V-shaped ribs f projecting from bars or brackets f' secured at their ends to the cylinder heads, said ribs` f being adapted to enter the A-shaped grooves` 'a5 and thus guide the table when inthe cylinder C.

The under side of the table is provided with T-shapedy brackets g, which are adapted to enter similarly shaped ways g' in vertically movable bars or brackets g2 inl the cylinder C, there being four such bars or brackets g2,- two above and two below the openings c' in the cylinder heads C'. At each end of `each bar or bracket g2, a link h is pivotally connected, and the other ends of said links are. pivotally connected to the shorter arms o'f the horizontal levers h' ,-which latter are pivoted atpoints between their ends to the cylinder heads C. The levers h'tof each pair project toward each other and at their inner ends are pivotally connected by links h8 to bars h2 mounted to slide in bearings h2, secured to the heads C'. The free ends of the bars h2 carry rollers h4 adapted to run in a cam groove h5 made in a plate h6 secured to the cylinder heads C'. At diametrically opposite points the groove h5 is curved .to produce cams h", h7,-and thus each half of the grooves mark a semicircle, one of which semi-circles has a shorter diameter than the other.

' From the abovedescription it will be seen that the cylinder is adapted for the reception of two tables, one above and facing the other and that each table is supported by movable brackets. When two tables are in the cylinder and separate, there should not be more than two inches between them. When the cylinder containing the two tables and a plate of glass between them, is given a half revolution, the roller h4 of the upper bar h2 passes through the cam portion h of the groove h5 and, acting through the levers h and links 71, connected therewith, causesthe upper table to move down upon the glass plate on the lower table and thus clamp the glass plate between the two tables. When the cylinder shall have made a half revolution, it kwill be seen that the tables willl have been transposed,the table which was before uppermost being then thelowerone, and vice versa. During this transposition of the tables, the plate or glass being treated will be turned over, and the previously upper face,`which had been pressed by the rolls D, D', is now the underl face, and the previously unpressed ICO face, is now uppermost and ready to be passed It will also be seen revolution, the previously upper sliding bar h2 will pass through the cam portion h2' of the groove h5 and thus the two tables will be separated, through the medium of the links `and levers above described. j

Inorder to .properly and eifectually turn the cylinder C and its contents, the gearing now to be described will be employed. The periphery of each head C of the cylinder C is made with gear teeth t' and beneath said cylinder a shaft il is mounted and carries at opposite ends gear wheels i2, adapted to mesh with said gear teeth on the cylinder heads. Mounted at right angles to the shaft t', preferably ata point between the ends thereof, is a shaft @'2, which carriesa bevel gear t4 at one end, adapted to mesh with a bevel pinion Z5 carried by the shaft i. At the other end of theshaft @J3 a bevel pinion @'6 is secured and meshes with a bevel pinion l carried by the lower end of a vertical shaft is. The upper end of the shaft @18 carries a bevel pinion @'2 adapted to mesh with a bevel pinion @'13 carried 'by the inner end of a horizontal shaft @$10. At theother end of the shaft i1, a bevel pinion @'11 is fixed and receives motion from a bevel pinion 12 carried by the motor shaft e11. A positive clutch i12 is located on the shaft e,

for throwing intoaud outof gear, the gearing for turning the cylinder.

In order to lock the cylinder C when it shall have made its half revolution, a springactuated lever 15 is mounted on the framework and carries a latch pin @16 adapted to enter a perforation in one of the cylinder heads C', saidlever beingmade with a handle portion @i12-by means of which to manipulate it.

A friction clutch will preferably be arranged between the endsof the shaft/2, so that in case thelatch pin 111, should stop the cylinder before the clutch 14 is operated, the friction clutch will prevent the breaking of the gearing.

The under sideof the tablehas a raelc'bar j secured thereto, and a series of pinions, whichwill now be described, are adapted to mesh with said rack bar to move the table.

The shafts e2 under the rolls, D', D2, have pinions .72,32 fixed thereon,respectively, at opposite ends of the machine, said pinions being adapted to mesh with the rack bars secured to the tables. A short shaft 7c is mounted in suitable bearings in the cylinder C under the lower table and has a pinion k'. secured? thereto, in alignment with the pinions j2,.j2. The other end of the shaft lo carries a bevelgear k2 which meshes with a bevel gear 7c3 mounted looselyon the long shaft e1, a clutchV 7a4 being mounted on said shaft e1 to cause the gear k2 to rotate with it, and thus transmit motion to the pinion k', whereby to transmit motion to the table carrying the glass plate, after the latter shall have been turned, as above explained. A shaft Z is mounted in the cylinder Cabove the upper table and projects in the reverse direction to the shaft lo, and carries apinion Z and a bevel gear Z2. From this construction it willbe seen that th'e pinion 7c will move the lower table which is iirst moved into the cylinder, carrying the glass plate, andwhen the tables shall have been transposed, the bevel gear 7a2 will have `moved out of mesh with the gear 7a2 and the bevel gear Z2 will move into mesh with said gear 702.

In order to properly heat the rolls D, D', D2, D2, a series of gas burners are arranged therein, and in order to heat the tables,lgas burners are arranged under the same.

Before beginning the operation of rolling the glass, a table is run into the cylinder and inverted. Another table B with the desired face plate thereon, is placed on one of the `platforms A4 and the molten glass deposited thereon. rlhe mechanism is then started and the table with the glass thereon isV fed, first under the roll D, by which the glass will be partially compressed, and then under the roll D', by which it will be compressed to a greater extent. The table carrying the glass will continue its movement'into the cylinder C, in the manner and by the means hereinbefore described. When the table carrying the plate of glass shall have entered the cylinder and become disposed directly under the upper table previously run into thecylinder, said cylinder will begin to make its half revolution,-during which the glass plate will be clamped between the two tables and-When the cylinder completes its half revolution, thetables will separate and leave the glass supported on the table which will then be the under one, `and thus the glass will be turned over ready to have its unpressed surface, pressed. The table carrying the glass will now be made tocontinue its journey through the cylinderby the means hereinbefore explained, and will leave the cylinder from the end opposite to that at which it entered, and passing under the roll D2, will be pressed to a greater extent than it Was pressed by the roll D', and

then passing under the roll D3, the glass will be pressed to a still greater extent. After passing under the last roll, D3, thetable containing the glass will be carried forward on the platform A'1 at the opposite end of the machine from which it started,-and the glass plate will be ready for the annealing furnace,-having had both its faces pressed by a single passage through the machine.

By providing the depressible strips b3 in proximity to all the edges of the face plate B', more pressure can be applied when the plate is between the two tables than is just suflcient to clamp the glass plate between them, the strips b3 keeping the glass in placelike a mold. By the additional pressure given to the glass (after rolling) the latter will be made more compact and dense and will take a ner polish and produce abetter quality of glass. By employing strips at all sideslof the face plate B', the plates or sheets of glass can be rolled and compressed at the same time.

IOC

IIO

The machine is provided with platforms E,

I claim as new, and desire to secure by Letters Patent, is-

l. A machine for rolling-glass having rolls,

and a turning device interposed between the rolls, said turning device operating in aplane at right angles to the travel of the glass when moving in Contact with the rolls, whereby they rolllng is from the samevedge in every in-v stance, substantially as set forth.

2. The combination with two rolls, and a turning device interposed between the rolls, the rolls and turning device -operating in planes at right angles to each other whereby a plate of glass is rolled successively on opposite sides beginning in each instance at ythe same edge, substantially as set forth.

3. .The combination with mechanism for turning a plate of glass, and means for auto- -lnatically operating said devices, of a series of rolls located'forward and rearward of the turning mechanism, one series adapted to roll one side ofthe glass and the other series the other side of the glass, the turning mechan-` ism revolving in a plane at right angles to the plane in which the rolls turn whereby the l glass is rolled from the same edge first by each Y series of rolls, substantially'as set forth.V f

4. The combination withV devices for turning a plate of glass, of rolls at each side of the turning devices operating in planes at right angles to the plane of movement of the turning devices whereby the same edge is operated upon rst by each series of rolls, and means for varying the' pressure of the rolls,

substantially as set forth.

5. The combination with two series of rolls of varying pressure, of a turning device located between the two series of rolls, said turning device operatingv in a plane at right anf nation with a frame, and T-shaped waystherein, of a table and T-shaped brackets projectgles to the plane in which the rolls turn, substantially as set forth.A l

6. The combination with two series of rolls adapted to roll a plate of glass successively and at varying pressures, and devices for raising and lowering the rolls, of aturning device located between the two series of rolls, said turning device operating in a plane at right angles to the planes in which the rolls turn whereby the plate of glass operated upon is operated upon from the same edge first by each series of rolls, substantially as set forth.

7. In a glass rolling machine, the combination with suitable framework, of rolls mount- Y ed therein in sliding bearings, screwthreaded shafts adapted to enter similarly threaded sockets in said bearings, pinions carried by said shafts, shafts carrying pinions at one end adapted to mesh with said rst mentioned pinions and carrying pinions at the other end adapted to mesh with pinionson other shafts, and means adapted to be attached to said last mentioned shafts whereby to turn the same to raise 0r lower the bearings of the rolls, substantially as set forth.

8. A table for a glass rolling machine having-chambers or compartments for the reception of heat retaining material, substantially as set forth.

9. A table for a glass rolling machine conlprising aseries of sections, each havinga coin- `partment or chamber for the reception of heatretaining material, and plates for retaining said heat-retaining material in saidcompartments or chambers, substantially as set forth.

10. In a glass rolling machine, the combination with a table made in sections secured together and adapted to receive heat-retaining material, of a face plate removably secured thereto, substantially as set forth.

11. In a glass rolling machine, the combination with a table having dove-tailed grooves n in its face, of a face plate having dove-tailed ribs or flanges adapted to enter said dovetailed grooves in the face of the table, substantially as set forth.

12.l In a glass rolling machine, the combination with a table and a face plate thereon, Y vof yielding devices projecting from said face plate to prevent the glass from running over the edges of the table or face plate, substantially as set forth.

13. In a glass rolling mach-ine, the combination with a table and a face plate thereon, said face plate having grooves in proximity to its edges, of a strip in said grooves, and springs in said grooves under said strips to maintain the latter normally beyond the face r ofthe face plate, substantially as set forth.

'l 14. Inl a glass rolling machine, thecombination with a table and a face plate thereon having grooves in proximity to its edges, of strips loosely located in said grooves, springs under said strips and having elongated slots in their ends and' pins passing through said elongated slots, substantially as set forth.

l5. In a glass rolling machine, the combiing from said table and adapted to enter the T-shaped ways in the frame, substantially as set forth. n

16. In a glass rolling machine, the combination with a revoluble frame or cylinder having elongated openings in the heads thereof, and two sets of T-shaped ways in said frame or cylinder, one set above and the other below the said elongated openings, of a. table, and T-shaped brackets adapted to enter and be sustained in either set of said ways, substantially as set forth.

17. In a machine for rolling glass, the cornbination with the main frame, anda semi-cir- IOC `of said revoluble frame or cylinder, `tables .luble frame or cylinder, substantially as set forth.

19. In a glass rolling machine, the combi-V nation with the main frame, and platformsy projecting' in opposite directions therefrom,y of a `revoluble frame or cylinder mounted on;

vsaid main frame, `a table for supporting the glass to be rolled, a rack bar carried by said table, rolls at each end of said revoluble frame o r cylinder, a shaft in proximity to each end@ ofisaid revoluble frame or cylinder, a pinion carried byeach of saidshafts and adapted tor mesh `with the rac-k bars on the table, and a Vshaft-mounted in the revoluble frameor cyl-1 inder and carrying a pinion to mesh with said rack bar, and means for transmitting motion to saidpinions to cause the table and its contents to be passed under said rolls and through the revolubleframe or cylinder, substantially `asset forth.

20. In a glass rolling machine, the combina` tion -With themain frame, platforms project-1 ing therefrom in opposite directions, and ai revoluble frame or cylinder, of rolls monnted `in `suitable housings in proximity to the ends? having brackets whereby to support two of; them .in the revoluble frame or cylinder ini position to face each other, a rack bar on the bottom ofea'ch table, pinions in proximitytoi the ends of the revoluble frame or cylinder and adapted to mesh with said rack bars to `feed the table and contents under the rolls, twoshafts carried by the revolubleframe or cylinder,a pinion on each-shaft to meshwitli the rack bars of the respective tables, a gear on each of `said shafts, a shaft carried by the main frame of the machine, anda gear earriedlby said shaft, Withwliich the gears carried bytlieshafts mounted in the revoluble frame or cylinder, are adapted to alternately mesh, substantially as and for the purpose set forth.

2l. In a machine for rolling glass, the com-` bination with a main frame, of a revoluble "frame or cylinder mounted thereon, andliaving'elongated openings in its heads, movable guides or ways supported in said frame orl cylinder above `and below the elongated openings, links connected with said slidingguides or "Ways, levers pivoted `between their ends and connected at their outer ends tosaid links, sliding bars to which the innerends of each pair of levers are connected, and a` cam plate, with which the free ends of said sliding bars engage, whereby when the i'evoluble frame or cylinder carrying the two tables and a plate of glass between them begins to turn, 011e of said tables will be moved toward the other and clamp the glass plate betweenthem, and when said frame or cylinder shall have made a half revolution, said tables will be separated and the glass plate thus turned left `on the lower table, substantially as set forth.

22. In a machine for rolling glass, the combination with a main frame, of a revoluble frame or cylinder mounted thereon, and having elongated openings in its heads for the accommodation of tables carrying glass, `movable guides supported in said frame orcylinder above and below said elongated openings, links connected to said sliding guides `or ways, levers pivotedbetween their outer ends and connected at their ends to said links, slidin g bars to which the innerends of `each pair of levers are connected, a z plate secured to the main frame,isaid platehavinga groove therein ,a cam at diametrically opposite points of the groove, and rollers carried bythe sliding bars and adapted to `run in `said cam groove, substantially as setforth.

23. The combination with a revoluble cylinder constructedto receivea `pair of `platens between which a plate 0f glass is hel'd, of slid ing devices and toggle joint `mechanism `for operating theslides and force the platenstoward each other, substantiallyn as setforth.

2li. The combinationwith a revolublercylinder, constructed to receive `afpair of `platens `between which glass is adapted tobe held,0f

clamp mechanism, andcamsforoperating the clamp to force theplatens toward eachother, substantially as setfforth.

25. The combination with a ievolublefcyld inder, a pair `ofplatens adapted to enterfthe cylinder, and meansfor turning the cylinder, 0f sides adapted to `be `connected with the platens, toggle joint mechanism, and i cams for operatingthe toggle `joint mechanism to forcethe platens toward each otherandfh'old them there, substantially asisetforth.

26. In a machine for rolling glass, the combiuation with a main frame, of fa revoluble frame or cylinder mounted thereon, `movable guides in said revolubleiframe forcylinder, tables having bracketsto enteriand be supported by said movable guides,and :meansfor moving said guides whereby to causeisaid tables to clamp a plate of glass between them whilesaid frame or cylinderis turning, substantially as and for thepurposexsetforth.

27. In a machine for rolling glass, the combination withia main frameiand pressing rolls,

`of a revoluble cylinder or frame, gear: teeth on the periphery of each `head Ofsaidcylinder or frame a shaft carrying gear wheelsuto mesh `with said gear teeth whereby'tozpositively propel-said cylinder or frame at i each end thereof, and bearing .for imparting mo tion to said shaft, substantially assetforth 28. Ina machinefor rolling glass, the combination with a main frame, and platforms ICO IIO

projecting therefrom in opposite directions, of a revoluble frame or cylinder, tables for supporting the glass to be rolled, rack bars carried by said tables, pinions for engaging said rack bars to propel the tables, rolls for pressing the glass supported by said tables, gearing forimparting positive motion to each end of said roll, a shaft from which motion is imparted to all of said devices to feed the tables through the machine, to rotate the rolls and to turn the frame or cylinder and an electrlc motor adapted to transmit motion to said shaft, substantially as set forth.

.29. In a machine for rolling glass, the oomblnation with a table and rolls, of a face plate made in sections and having a figured surface, substantially as set forth.

30. In a v glass rolling machine, the combitially as set forth.

3l. In a machine for rolling glass, the coin- -bination with two tables, of a face plate, yield-y ing strips in proximity to all the edges of said face plate, and devices for forcing said tables together to compress a sheet of glass between them, substantially as set forth.

In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

NILES M.V MILLER.

Witnesses D. S. LINDSAY, CLARENCE ELsEY.

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