Improvements in Metal Doors and Frames for Buildings.
Year: 1886

page_text: Date of Application, 21st May, 1886.
Complete Left, 21st Feb., 1887.
Complete Accepted, 22nd Mar., 1887.
PROVISIONAL SPECIFICATION.
Improvements in Metal Doors and Frames for Buildings.
1, JOHN PARTINGTON, of Water Lane Boiler Works, Bradford in the County of
York, Boiler Maker, do hereby declare the nature of this invention to be as follows:-
This invention relates to certain improvements in the method of manufacturing
metal doors and frames whereby they are made more expeditiously and rendered
considerably stronger for the resistance of fire and burglars, by the operation of
embossing the same to any design.
The improvement consists in taking a sheet of metal of the thickness and size
corresponding to the dimensions of the finished door and heating the plate to the
requisite temperature when it is placed between male and female dies or moulds and
subjected to continuous pressure which may be obtained by hydraulic apparatus or by
other power thereby bending the heated plate to the configuration of the dies or
moulds.
The plates for the door frames are heated and subjected to pressure in suitable
moulds in the manner as before described and may be jointed together at the angles by
forming or attaching lugs thereto through which are placed bolts for securing them
together.
The doors may be attached to the frames by ordinary hinges and the frames secured
to the building structure in the same manner as metal frames of the ordinary
construction.
JOHN WAUGH,
Agent.

page_text: I, JOHN PARTINGTON, of Water Lane Boiler Works, Sugden Street Bradford, in
the County of York, Boiler Maker, 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 :-
This invention relates to certain improvements in the method of manufacturing
metal doors and frames suitable for door and window openings, whereby though made
of lighter material than is commonly used for the purpose when made in the
ordinary manner, they are considerably stronger and more efficient for the resistance
of fire and burglars.
The improvements consist in taking a sheet of metal of the thickness and size
corresponding to the dimensions of the finished door or window shutter, and heating
the same to the required temperature.
The heated plate is then placed between male and female dies or moulds similar to
those illustrated by Figs. 1 and 2, and enlarged cross section through the same by
Fig. 8, and there subjected to continuous pressure which may be obtained by
hydraulic apparatus of the ordinary construction, such as are commonly used for
packing bales of yarn fabrics, cotton, and other dry goods; or a press operated by a
screw or other means, whereby sufficient pressure can be put upon the dies or
moulds to bend the heated plate as shewn by section Fig. 4 to the configuration of
the said dies or moulds, which may be embossed, corrugated, or mouldings of various
designs formed thereon; but in every case one or more mouldings or corrugations
run all around near the edge of the door as at A, by which the strength of the door
is materially increased, and the tendency to warp or twist reduced to a minimum.
The upper and lower dies or moulds are kept in their respective positions by
guides, such as by curving the angles of the moulds as a B, to fit the ordinary
Connecting bars between the top and bottom plates of an bydraulic or screw packing
press.
I find I may emboss or corrugate the heated plates by passing them between
rollers under pressure, the rollers being mounted in frames similar to those now in
use for rolling plate and bar iron. The distance round the circumference of each
roller is a little more than the length of the finished door or shutter, and male and
female moulds or corrugations are formed thereon, so that on passing the heated
plates between the same, they are bent to the device of the rollers; the same as when
subjected to pressure between the before mentioned dies or moulds.
The door or window shutter frames are also made of plates and formed in sections
represented by the following figures, in which Fig. 5 shews a side view of one jamb
or side of a door frame, Figs. 6 & 7 a front view and plan of the same, and Fig. 8
partly in section, shewing the several pieces bolted together at the mitred angles C
for the formation of the frame.

page_text: The plates for the frames are heated and subjected to pressure in suitable male and
female dies or moulds in the manner before described for forming the doors or window
shutters, and are bent by the dies or moulds at the angles for mitring as shewn by the
drawings, through which are formed holes for bolting them together as shown by
Fig. 8.
The frames are provided with flanges F on both sides, between which is built the
brickwork of the structure, thereby securing them thereto; or one of the flanges may
be dispensed with, and the frame inserted in the opening and secured in the manner as
is now the practise with frames made of angle iron.
Having now particularly described and ascertained the nature of this invention, and
in what manner the same is to be performed, I declare that what I claim is :—
Sheet metal doors or window shutters in which are formed one or more
corrugations or moulds run around near the outer edge of the door or window
shutter, the space in the centre remaining either plain or embossed to any design
substantially in the manner described.
The formation of sheet plate door or window frames with mitred angles substantially
as described.