Metallic Framing for the Doors of Strong Rooms and the like.
Year: 1890

page_text: Date of Application, 17th Apr., 1890-Accepted, 31st May, 1890
COMPLETE SPECIFICATION.
Metallic Framing for the Doors of Strong Rooms and the like.
DANIEL ROWLINSON RATCLIFF 28 Finsbury Pavement London E.C. Engineer 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 object of my invention is to so construct the metallic framing for the doors
of strong rooms and the like as to dispense with the angle-iron and riveted platework
now generally employed for this purpose.
I effect this by means of suitable castings of steel having much greater strength
than riveted work and offering many advantages in construction. The way in which
I
carry out my invention will be readily understood by reference to the annexed
drawing in which : -
Fig. 1, is a front elevation shewing the lower part of a cast steel door frame and
door constructed in accordance with my improvements.
Fig. 2, is a transverse section upon line A B fig. 1.
Fig. 3, is a front elevation to smaller scale of the entire frame and door.
Fig. 4, is a back elevational view of Fig. 3.
A, figs. 1, 2, 3, 4 is the frame, which in this case is made in 4 parts, each part
being a distinct steel casting; and having seating blocks a, b, c, d, e, f, formed of
thicker metal than the two sides and top of the frame see also fig. 4. These seating
blocks are carefully planed or otherwise surfaced; the respective parts being secured
by holts or equivalent 9, passing through reamered holes h. Two lugs J J, are cast
upon the top and bottoin frame a¹, a² into which hinge pins K, secured to the front
of the door 1, are stepped. A recess 1, is provided in each side frame B B' and the
top a', for the brick, concrete, metal, or other setting, and the metal rib p, forming
the rebate for the door D, see fig. 2, is employed for rigidly securing the same by
means of the sliding bolt or bolts r, fixed bolts s or bolt bar s¹.
I do not in constructing cast steel frames for the doors of strong rooms and the
like contine myself to the exact sections shewn in the drawings; as it is obvious
that such sections can be varied to meet the existing conditions of any particular
case; as for instance the side frames B B', which are shewn in the drawing of
☐ section, see fig. 2 might be channeled so as to receive any thickness of masonry.
I am aware that sections such as 1 have shewn and described are now made up
of angle iron and platework riveted or screwed together and employed for the
frames of strong room doors, but to such when thus constructed I lay no claim.
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:
1st. The application and use of steel castings moulded to suitable shapes; and
bolted or otherwise securely fastened together, in the construction of frames for the
doors of strong rooms and the like substantially as herein described.
2nd. In the frames of doors for strong rooms formed of steel castings securely
fastened together by bolting or equivalent means, the particular arrangement and
construction whereby the rib p, forming the rebate for the door D, is utilized for
rigidly securing the same by means of the bolt or bolts r, and fixed bolts s or bolt
bars s', substantially as described.
Dated April 17th 1890