Improvements relating to the Rolling of Glass, and in Machinery therefor.
Year: 1893

page_text: Date of Application, 5th Dec., 1893-Accepted, 27th Jan., 1894
COMPLETE SPECIFICATION.
Improvements relating to the Rolling of Glass, and in Machinery
therefor.
1, NILES MANCHESTER MILLER, 4101 Chestnut Street, Philadelphia,
Pennsylvania, United States of America, Physician, do hereby declare the
nature of this invention and in what manner the same is to be performed to be
particularly described and ascertained in and by the following statement :-
My invention relates to an improvement in machine 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 it 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 roller 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 employ-
ment 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 at a 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 efficient 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 from 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 provide a 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 figured surface on the glass plate to be
treated.
A further object is to produce a table which shall be of simple construction,
easy to assemble 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 tables,
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.

page_text: A further object is to construct a glass rolling machine with mechanism sc
constructed and arranged that the table and its contents will be effectually and
automatically introduced into the machine and the glass plate roller 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 simple gearing for a glass rolling machine, whereby
the various operations thereof can be efficiently accomplished and whereby power
will be applied to both ends of the rollers and thus cause said rollers to revolve
freely and without liability of binding.
A further 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.
With 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.
It also consists in the combination in a glass rolling machine, of devices con-
structed and arranged to turn a plate or sheet of 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 rolling machine, 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-containing material.
It also consists in the combination, in a glass rolling machine, of a table 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 combi-
nations and arrangements of parts as hereinafter set forth and pointed out in the
claims.
In the accompanying drawings;
Figure 1 is a side elevation; Figures 2 and 3 are transverse sectional views.
Figure 4 is a plan view illustrating the gearing. Figures 5, 6, 7, 8, 9, 10, 11, 12
and 13 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 A', whereby the machine will be rendered
portable. From each end or side of the machine, platforms A project and are
suitably braced by means of braces A³, 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 Figures 6,
and 9. Each section a of the table B 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 chamber or
receptacle by means of plates a², and the several sections or blocks a are secured
together by means of bolts a. The sections a at the sides of the table are
provided with depending lugs a having U-shaped grooves therein for a purpose
hereinafter explained. The lugs a' are provided with laterally projecting ears a,
to which one edge of the bottom plates a², a' are secured, the other edge of the
plates a being secured to an inwardly projecting portion of the depending flanges a'.

page_text: On top 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 a
figured plate may be employed, according to the kind of surface it is desired to
produce on the glass plate to be treated. That is to say, when it is desired that
the glass plate, after it shall have been rolled, shall have a smooth surface, a
smooth face plate B' will be employed and if be desired that the glass shall have a
decorated or figured surface, a face plate B' having such a surface (Fig. 13) will
be accordingly employed. In the upper face of the table, dovetailed grooves bare
made, for the reception of similarly shaped tongues made on the bottom of the
face plate B. By this means the face plate B¹ will be securely but removably held
by the table B.
In proximity to the edges of the face plate B', grooves 1ª are made and in these
grooves, strips are loosely fitted and adapted to project above the surface of said
face plate, as most clearly shown in Figures 10 and 11. The purpose of the
strips 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 under the strips 12,
are springs, 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 is
preferably made semi-elliptical in form and secured at its center to the bottom of
the strip and its ends bear in the bottom of the groove . The ends of the
springs are made with elongated slots for the accommodation of headed pins
secured to the face plate B¹.
At each end of the frame A, a semi-circular series of rollers c are mounted and
support a cylinder or frame C, on which rollers said cylinder is adapted to turn, as
explained further on, the heads C¹ of said cylinder having openings e' 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 A', rolls D, D', D3, D³, are mounted in sliding
boxes d, under which rolls the table 13 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 screw threaded enlargement d for the reception of a screw threaded
shaft mounted in the housing or framework . To the lower end of each
shaft, a bevel pinion is fixed and adapted to mesh with a bevel pinion s
carried by a horizontal shaft de mounted in the housing d³. At the inner end of
each horizontal shaft d", a bevel pinion is secured and adapted to mesh with a
bevel pinion at the lower ends of vertical shafts do, there being, of course, two
such horizontal and vertical shafts and pinions for each roll. At the upper ends of
the vertical shafts do, bevel pinions are fixed, and adapted to mesh with bevel
pinions d, carried by horizontal shafts 2, each horizontal shaft being adapted to
receive a crank arm by means of which it is turned. From this construction
and arrangement of parts it will be seen that by operating the crank arms the
journal boxes d and consequently the rolls D, D1, D2, D3, which they carry, can be
raised or lowered and said rolls made to approach or recede from the platforms, as
desired, according to the thickness of the glass plate or sheet to be operated upon.
In practice I propose to arrange said rolls at successively varying distances 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 D and when
it passed under the roll D', and when it passes under the roll D³, it will be subjected
to a still greater pressure.
The shaft of each roll carries a bevel gear 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, vertical shafts e¹ are mounted, in
suitable bearings and on the upper end of each shaft e', a bevel gear e³ is mounted

page_text: at
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 el, but are adapted to have a sliding
movement thereon, so as to permit of the vertical adjustment of the rolls above
described. The lower end of each shaft has a bevel gear e fixed to it, with each
of which, bevel gears, e mesh. The bevel gears es, are carried at the ends of
horizontal shafts e, e, under the various rolls D, D¹, D², D³. The shafts e',
each end of the machine, are provided, respectively, with gears e, e, and between
the pairs of shafts e', e, shafts e", el are respectively located and carry gears el
adapted to mesh with the gears e, e10, whereby to transmit motion in the same
direction to both shafts e, e, and ultimately through the gearing above described,
to the rolls D, D', D2, D³. On one end of each shaft e", e, a bevel pinion eis
fixed and adapted to mesh with bevel gears e, carried by a long horizontal
shaft, whereby to transmit motion from the shaft e" to the shaft e Motion is
imparted to the shaft ell by means of a motor, preferably an electric motor E, the
armature of which is carried by the shaft el. A clutch e" 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 el in the heads C¹ of the cylinder C, are V-shaped
ribs projecting from bars or brackets" secured at their ends to the cylinder
heads, said ribs being adapted to enter the A-shaped grooves a and thus guide
the table when in the cylinder C.
9
The under side of the table is provided with T-shaped brackets which are
adapted to euter similarly shaped ways in vertically movable bars or brackets g
in the cylinder C, there being four such bars or brackets g², two above, and two
below the openings in the cylinder heads C. At each end of each bar or
bracket y, a link his pivotally connected, and the other ends of said links are
pivotally connected to the shorter arms of the horizontal levers ', which latter are
pivoted at points between their ends to the cylinder heads C. The levers l' of
each pair project toward each other and at their inner ends are pivotally connected
by links to bars 2 mounted to slide in bearings ³, secured to the heads c. The
free ends of the bars carry rollers adapted to run in a cam groove ³ made in
a plate secured to the frame A (Fig. 5). At diametrically opposite points the
groove is curved to produce cams, and thus each half of the grooves
mark a semi-circle, one of which semi-circles has a shorter diameter than
the other.
of
From the above description 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 of the upper bar 2 passes through the cam portions
the groove and acting through the levers and links connected therewith,
causes the 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 will be seen that the table will have been transposed, the
table which was before uppermost being then the lower one, and vice versu.
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 under face, and the previously unpressed face is now uppermost and ready
to be passed under the rolls D2, D3. It will also be seen that just as the cylinder
completes its half revolution, the previously upper sliding bar will pass through
the cam portion of the groove and thus the two tables will be separated,
through the medium of the links and levers above described.
In order to properly and effectually turn the cylinder C and its contents, the
gearing now to be described will be employed. The periphery of each head C₁
of the cylinder C is made with gear teeth i and beneath said cylinder a shaft is
mounted and carries at opposite ends gear wheels 2, adapted to mesh with said

page_text: at
gear teeth on the cylinder heads. Mounted at right angles to the shaft i', preferably
at a point between the ends thereof, is a shaft 3, which carries a bevel gear
one end, adapted to mesh with a bevel pinion carried by the shaft . At the
other end of the shaft a bevel pinion is secured and meshes with a bevel
pinion carried by the lower end of a vertical shaft. The upper end of the
shaft carries a hevel pinion adapted to mesh with a bevel pinion carried
by the inner end of a horizontal shaft. At the other end of the shaft 10, a
bevel pinion is fixed and receive notion from a bevel pinion 12 carried by the
motor shaft e¹¹. A positive clutch is located on the shaft e", for throwing into
and out of gear, the gearing for turning the cylinder.
In order to lock the cylinder C when it shall have made its half revolution, a
spring actuated lever is mounted on the framework and carries a latch pin 18
adapted to enter a perforation in one of the cylinder heads C₁, said lever being
made with a handle portion by means of which to manipulate it.
A friction clutch will preferably be arranged between the ends of the shaft,
so that in case the latch pin 1, should stop the cylinder before the clutch is
operated, the friction clutch will prevent the breaking of the gearing.
The underside of the table has a rack bar j secured thereto and a series of pinions,
which will now be described, are adapted to mesh with said rack bar to move
the table.
The shafts under the rolls D¹, D³, have pinions j², j³ 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 is mounted in suitable bearings in
the cylinder C under the lower table and has a pinion secured thereto, in
alignment with the pinions 3. The other end of the shaft carries a bevel
gear which meshes with a bevel gear 3 mounted loosely on the long shaft e, a
clutch & being mounted on said shaft e to cause the gear to rotate with it, and
thus transmit motion to the pinion ¹, whereby to transmit motion to the table
carrying the glass plate, after the latter shall have been turned, as above explained.
A shaft is mounted in the cylinder C above the upper table and projects in the
reverse direction to the shaft k, and carries a pinion and a bevel gear. From
this construction it will be seen that the pinion will move the lower table which
is first moved into the cylinder, carrying the glass plate, and when the tables
shall have been transposed, the bevel gear will have moved out of mesh with
the gear and the bevel gear will move into mesh with said gear ³.
In order to properly heat the rolls D, D1, D2, D3, a series of gas burners are
"arranged therein, and in order to heat the tables, gas 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 A and the molten glass deposited thereon. The mechanism is then
started and the table with the glass thereon is fed, first under the roll D, by which
the glass will be partially compressed, and then under the roll D¹ 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
the cylinder, 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, the tables 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 to continue its journey through the cylinder by the means hereinbefore
explained, and will leave the cylinder from the end opposite to that at which it
entered, and passing under the roll D³, 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 ha

page_text: pressed to a still greater extent. After passing under the last roll D³, the table
containing the glass will be carried forward on the platform A 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 63 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 sufficient to clamp the glass plate between them, the strips 63 keeping
the glass in place like a mould. By the additional pressure given to the glass
(after rolling) the latter will be made more compact and dense and will take a
finer polish and produce a better quality of glass. By employing strips at all
sides of the face plate B', the plates or sheets of glass can be rolled and compressed
at the same time.
The machine is provided with- platforms E, for the accommodation of the
operators.
It is evident that it is immaterial from which end of the machine the glass is
inserted into the same, the action being the same either way.
It is also evident that slight changes might be made in the details of construction
of the machine without departing from the spirit of my invention or limiting its
scope, and hence I do not wish to restrict myself to the precise details of con-
struction herein set forth, but,
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, 1 declare that what I
claim is
1. A machine for rolling glass having rolls and turning device interposed between
the rolls, said turning device operating in a plane at right angles to the travel of
the glass when moving in contact with the rolls, whereby the rolling is from the
same edge in every instance, substantially as set forth.
2. The combination with two rolls, and a turning device interposed between 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 the same edge, substantially as set forth.
3. The combination with mechanism for turning a plate of glass, and means for
automatically operating said devices, of a series of rolls located forward and
rearward of the turning mechanism, one series adapted to roll one side of the glass
and the other series the other side of the glass, the turning mechanism revolving
in a plane at right angles to the plane in which the rolls turn whereby the glass
is rolled from the same edge first by cach séries of rolls, substantially as set
forth.
4. The combination with 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 first 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 operating in a
plane at right angles to the plane in which the rolls turn, substantially as set
forth.
6. The combination with two series of rolls adapted to roll a plate of glass
successively and at varying pressures, and device for raising and lowering the rolls,
of a turning 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
mounted therein in sliding bearings, screw threaded shafts adapted to enter

page_text: similarly threaded sockets in said bearings, pinions carried by said shafts, shafts
carrying pinions at one end adapted to mesh with said first mentioned pinions
and carrying pinions at the other end adapted to mesh with pinions on other shafts,
and means adapted to be attached to said last mentioned shafts whereby to turn the
same to raise or 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 comprising a series of sections, each having
a compartment or chamber for the reception of heat-retaining material, and plates
for retaining said heat-retaining material in said compartments 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 in its face, of a face plate having dove-tailed ribs or flanges adapted to
enter said dove-tailed grooves in the face of the table, substantially as set forth.
12. In a glass rolling machine, the combination with a table and a face plate
thereon, of 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 machine, 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 of the face plate, substantially as set forth.
14. In a glass rolling machine, the combination 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.
15. In a glass rolling machine, the combination with a frame and T-shaped ways
therein, of a table and T-shaped brackets projecting from said table and adapted to
enter the T-shaped ways in the frame, substantially as set forth.
16. In a glass rolling machine, the combination with a revoluble frame or
cylinder having elongated epenings 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 combination with the main frame, and a
semi-circular series of wheels carried thereby, of a frame or cylinder mounted to
turn on said wheels, and devices carried by said frame or cylinder for holding two
tables and a plate of glass between them, while the frame or cylinder is turning,
substantially as set forth.
18. In a machine for rolling glass, the combination with the main frame and
platforms projecting therefrom in opposite directions, of a revoluble frame or
cylinder adapted to receive two tables and a plate of glass between them, and
rolls at each end of said revoluble frame or cylinder, substantially as set forth.
19. In a glass rolling machine, the combination with the main frame, and
platforms projecting in opposite directions therefrom, of a revoluble frame or
cylinder mounted on said 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 or cylinder,
a shaft in proximity to each end of said revoluble frame or cylinder, a pinion
carried by each of said shafts and adapted to mesh with the rack bars on the table,
and a shaft mounted in the revoluble frame or cylinder and carrying a pinion to
mesh with said rack bar, and means for transmitting motion to said pinions to
cause the table and its contents to be passed under said. rolls and through the
revoluble frame or cylinder, substantially as set forth.
I
20. In a glass rolling machine, the combination with the main frame, platforms
projecting therefrom in opposite directions, and a revoluble frame or cylinder, of

page_text: rolls mounted in suitable housings in proximity to the ends of said revoluble frame
or cylinder, tables having brackets whereby to support two of them in the revoluble
frame or cylinder in position to face each other, a rack bar on the bottom of each
table, pinions in proximity to 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,
two shafts carried by the revoluble frame or cylinder, a pinion on each shaft to
mesh with the rack bars of the respective tables, a gear on each of said shafts, a
shaft carried by the main frame of the machine, and a gear carried by said shaft,
with which the gears carried by the shafts mounted in the. revoluble frame or
cylinder, are adapted to alternately mesh, substantially as and for the purpose set
forth.
21. 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, movable guides or ways supported in said frame or cylinder above and below
the elongated openings, links connected with said sliding guides or ways, levers
pivoted between their ends and connected at their outer ends to said links, sliding
bars to which the inner ends of each pair of levers are connected, and a cam plate,
with which the free ends of said sliding bars engage, whereby when the revoluble
frame or cylinder carrying the two tables and a plate of glass between them begins
to turn, one of said tables will be moved toward the other and clamp the glass plate
between them, 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 clongated openings in its
heads for the accommodation of tables carrying glass, movable guides supported in
said frame or cylinder above and below said elongated openings, links connected to
said sliding guides or ways, levers pivoted between their outer ends and connected
at their ends to said links, sliding bars to which the inner ends of each pair of levers
are connected, a plate secured to the main frame said plate having a groove
therein, a cam at diametrically opposite points of the groove, and rollers carried
by the sliding bars and adapted to run in said can groove, substantially 'as set
forth.
23. The combination with a revoluble cylinder constructed to receive a pair of
platens between which a plate of glass is held, of sliding devices and toggle joint
mechanism for operating the slides and force the platens toward each other,
substantially as set forth.
24. The combination with a revoluble cylinder, constructed to receive a pair of
platens between which glass is adapted to be held, of clamp mechanism; and cams
for operating the clamp to force the platens toward each other, substantially as set
forth.
25. The combination with a revoluble cylinder, a pair of platens adapted to enter
the cylinder, and means for turning the cylinder, of sides adapted to be connected
with the platens, toggle joint mechanism, and cams for operating the toggle joint
mechanism to force the platens toward each other and hold them there, substantially
as set forth.
26. In a machine for rolling glass, the combination with a main frame, of a
.revoluble frame or cylinder mounted thereon, movable guides in said revoluble
frame or cylinder, tables having brackets to enter and be supported by said movable
guides, and means for moving said guides whereby to cause said tables to clamp a
plate of glass between them while said frame or cylinder is turning, substantially
as and for the purpose set forth.
27. In a machine for rolling glass, the combination with a main frame and
pressing rolls, of a revoluble cylinder or frame, gear teeth on the periphery of each
head of said cylinder or frame a shaftecarrying gear wheels to mesh with said gear
teeth whereby to positively propel said cylinder or frame at each end thereof, and
gearing for imparting motion to said shaft, substantially as set forth.

page_text: 28. In a machine for rolling glass, the combination with a main frame, and
platforms 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 for imparting 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 a motor adapted to transmit motion to said shaft, substantially as.
set forth.
29. In a machine for rolling glass, the combination with a table and rolls, of a.
face plate made in sections and having a figured surface, substantially as set forth..
30. In a glass rolling machine, the combination with rolls and a table, of a face
plate on the table, and yielding strips or guards in proximity to all the edges-
thereof, substantially as set forth.
31. In a machine for rolling glass, the combination with two tables, of a face.
plate, yielding 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.
32. A face plate for a glass machine having a figured surface, substantially as.
set forth.
R. HADDAN,
Of the Firm of Herbert Haddan & Co.,
18, Buckingham Street, Strand, London, Agent to Applicant..