Improvements in and connected with Kilns for Annealing Plate Glass.
Year: 1891

page_text: Date of Application, 23rd June, 1891
Complete Specification Left, 25th Apr., 1892-Accepted, 28th May, 1892
PROVISIONAL SPECIFICATION.
Improvements in and connected with Kilns for Annealing Plate
Glass.
I, WILLIAM WINDLE PILKINGTON of St. Helens in the County of Lancaster,
Glass Manufacturer, do hereby declare the nature of this invention to be as
follows:-
The objects are (a) to so construct kilns that plates of glass from the casting
table may be readily deposited therein and may be made to have a considerable
period of rest before being moved into and handled in the cooling off lear or tunnel
through which they are moved from the heated to the cool end. By this means
the plates are so far reduced in temperature before they enter the lear that they
may be carried in the lear by the usual moving bars or other suitable means
without injury, (b) to provide improved means for moving the cooling plates through
the lear.
My invention consists, First. Of a cooling off lear or tunnel of any usual or
suitable construction combined with a number of receiving compartments at the
entering end so disposed that the plates are placed in the compartments successively
until the last compartment is reached. The plate in the first compartment is then
so far cooled that it may be pushed into and through the lear and its place in the
compartment be taken by a plate fresh from the casting table. The plates in the
second and succeeding compartments are similarly treated. Dampers or doors are
provided between the compartments and the lear, and there are heating appliances,
receiving and discharging doors, and the usual accessories.
Second. A chamber on wheels or otherwise freely movable and having heating
appliances or not is provided to receive the plates after they leave the casting table
and convey them to the compartments.
Third. Lears are combined at the exit end with travelling carriers on wheels
chains or otherwise movable to carry the plates through the last portion of the
lear and the said lear is preferably made shaped so that the carriers travel at
right angles to the usual mechanical plate moving appliances.
Fourth. Carriers under the third part are so made as to be capable of receiving
two or more plates of glass one above another and means are provided for depositing
the glass on the said carriers.
Fifth. In constructing lear bars and carriages for glass plates with receptacles
clips or equivalent devices for holding freely bricks or blocks of material having a
low conductivity for heat.
Delhi on 11
1001
COMPLETE SPECIFICATION.
Improvements in and connected with Kilns for Annealing Plate
Glass.
I WILLIAM WINDLE PILKINGTON of St. Helens in the County of Lancaster,
Glass Manufacturer, 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:-
The objects are (a) to so construct kilns that plates of glass from the casting
[ Price RdI

page_text: table may be readily deposited therein and may be made to have a considerable
period of rest before being moved into and handled in the cooling off' leer or tunnel
through which they are moved from the hot to the cool end. By this means the
plates are so far reduced in temperature before they enter the leer that they may be
carried in the leer by the usual moving bars or other suitable means without injury,
(b) to provide improved meaus for moving the cooling plates through the leer."
My invention consists First of a cooling off leer or tunnel of any usual or suitable
construction combined with a number of receiving compartments at the entering
end so disposed that plates of glass may be placed in the compartments successively.
When the last compartment is reached, the plate or plates in the first compart-
ment is or are so far cooled that it or they may be pushed into the leer and leave
the compartment free to receive a plate or plates fresh from the casting table. The
plate or plates in the second and succeeding compartments are similarly treated.
Dampers or doors may be provided between the compartments and the leer; and
there are heating appliances, receiving doors and accessories.
Second. A chamber on wheels or otherwise freely movable and having heating
appliances or not is provided to receive the plates after they leave the casting table
and convey them to the compartments.
Third. Leers are combined at the exit end with travelling trays or beds on
wheels or otherwise movable to carry the plates through the last portion of the
leer and the said leer is preferably made L-shaped so that the carriers travel at right
angles to the usual mechanical plate moving appliances.
Fourth. Carriers under the third part are so made as to be capable of receiving
two or more plates of glass one above another, and means are provided for depositing
the glass on the said carriers.
Fifth. In constructing leer bars and carriages for glass plates with receptacles,
clips, or equivalent devices for holding freely bricks or blocks of material having a
low conductivity for heat.
DESCRIPTION OF THE DRAWINGS.
In all the views the same letters denote like parts.
Fig. 1 is a horizontal section.
Fig. 2 is an elevation and section at A. B. on Fig. 1.
Fig. 3 is an elevation.
Fig. 4. is a section through C. D. on Fig. 1. and
Fig. 5 a section at right angles to Fig. 4 showing the first and second parts of
the invention. 1 is the leer, 2, 2, 2, 2 are receiving compartments, 3 are the
usual gas and air ports used in heating. 4 are receiving doors or dampers between
the compartments and the leer. The said compartments may be heated by furnaces
or grates instead of by gas. 6 is the movable chamber mounted on wheels heated
by furnaces 7, and having a receiving door 8 and discharging door 8*.
Fig 6 is a horizontal section.
Fig. 7 a section at A. B. on Fig. 6, and Fig. 8 a section at C. D. on Fig. 6,
illustrating the third and fourth parts of the invention. 9. 10 and 11 are movable
carriages arranged to travel at right angles to that part of the leer in which the
usual bars work, and are made with platforms so as to carry three plates of glass
each. 10 is one of the carriages in position to receive plates from the bars, and 11
is an empty carriage being heated up in a chamber provided with doors or
dampers 12 and 13 whilst 10 is being filled with plates, and which will take the
place of 10 when 10 is filled and moved away. A cold empty carriage is placed
in the warming up chamber to be ready when wanted. 14 is a door at the exit.
The raising and lowering machinery 15 is worked by any convenient arrangement
of mechanism or hydraulic or other power. In practice the top platform is first
filled, then the middle platform, and lastly the bottom platform. If desired, the
carriages may only have two platforms, or four or more may be used.
Figs. 9. 10 and 11 show a modification of apparatus under the third and fourth

page_text: parts of the invention; in this case the receiving end of the leer which has the
usual bars, terminates in a transverse passage which leads to a number of tunnels
arranged parallel to the said leer to receive the carriages loaded with glass. 16 is
an elevator to enable the various platforms of the trucks or carriages 17 to be
filled from the leer. The said trucks or carriages run on rails at right angles to
the end of the leer so as to take glass to any of the parallel tunnels along which
the said trucks are run. 18 are doors to close the ends of the tunnels and form
air locks where required. Cold carriages may be heated up in a chamber 19
or 20.
Fig. 12 shows a series of tunnels for carriages arranged in a line with the leer-
bars. 22 is a small truck which may be raised or lowered, which receives empty
carriages from the central tunnel and which can be traversed at right angles to
the bars so that carriages loaded with warm glass may be sent down the outer
tunnels. 23 is a small truck to move carriages about at the cool or exit end.
doors or dampers.
24 are
Figures 13, 14 and 15 show iron bars for lcers and carriages under the fifth
part of the invention. In Figs. 13 and 14 Hor Vor angle bars are fitted with
bricks or blocks of material with low conductivity for heat held in position by
pins, set screws, clips or any other equivalent device, or the bricks or blocks may
be simply dropped into their place, such bars may be used in the leer and as
bearers on the carriages. Under modification shown in Fig. 15 bricks or other
suitable materials may be placed on the main girders of the carriages and be held
in position by clips or socks.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
First. The combination of a cooling off leer or tunnel with two or more
compartments at the receiving end, arranged and operated substantially as set
forth.
Second. The combination of compartments at the receiving end of a leer or
tunnel with a movable chamber for the purpose set forth.
Third. In the manufacture of plate glass the combination of leer bars with
travelling trays, beds, or carriers.
Fourth. Constructing carriers for plate glass in "leers" with two or more
platforms for the purpose set forth.
Fifth. The combination of leer bars and carriers for plate glass with material
of low conductivity held or placed in position substantially as herein set forth.
Sixth. The combination of parts under two or more of the several heads herein-
before set forth.
Dated the 23rd day of April 1892.
Per pro J. T. KING,
J. Johnson,
Agent.