Year: 1895

page_text: We, THE ADAMANT COMPANY LIMITED of Commercial Street, Birmingham,
in the County of Warwick, Adamant Manufacturers, and JOHN WILKINSON,
Managing Director of the said Company do hereby declare the nature of this
invention to be as follows:-
-
The said invention consists of a new or improved fire-proof flooring and ceiling
the parts of which are constructed and combined or arranged in the manner
hereinafter described.
In constructing the said new or improved fire proof flooring and ceiling we
employ parallel girders preferably of iron or steel of the kind known in commerce
as I girders; that is, girders consisting of a vertical web or body with a horizontal
flange at top and bottom; or instead of the said I girders we may employ
T girders, that is, girders the bodies of which have but one flange in which case
we use the said girders in an inverted position or with the flange downwards..
Between the said girders we introduce a series of parallel curved or arched light
bars of iron or steel the ends of each arched bar being flat and situated in the
same plane. The flat ends of the said arched bars rest upon the bottom flange of
the girders the said arched bars being at right angles to the said girders. We fill
up the spaces between the said arched bars with blocks of the fire proof composition.
known in commerce as adamant. We employ by preference the adamant
manufactured by The Adamant Company Limited, but we do not limit ourselves
thereto as other kinds of adamant or fire proof cement may be used with nearly
the same effect. The said blocks of adamant or the like, are oblong in figure their
shorter ends resting on the arched bars described and their junctions consequently
being parallel to the girders. The ends of the said blocks of adamant have
rebates or recesses in them in which the edges of the arched bars engage.
When
all the adamant blocks have been put in position concrete is poured on the said
blocks and girders to a height a little above the top of the girders. The under-
surfaces of the adamant blocks and arched bars and the horizontal bottoms of the
girders of the flooring thus made constitute the foundation of the ceiling of the
room below, which said ceiling is completed by the use of adamant plastering
applied to the said undersurfaces. Or the ceiling may be completed by the use of
other plastering material.
By the use of the arched bars hereinbefore described and their combination
with the girders and adamant blocks a fire proof flooring of great strength is
obtained, the said flooring being much lighter than fire proof floorings as ordinarily
made.
A
Dated this Seventh day of January 1805.
W. T. WHITEMAN,
Agent for the Applicants.

page_text: Paper Fire Froor Flooring and Ceiling.
We, THE ADAMANT COMPANY LIMITED, of Commercial Street, Birmingham,
in the County of Warwick, Adamant Manufacturers, and JOHN WILKINSON,
Managing Director of the said Company, do hereby declare the nature of the said
invention and in what manner the same is to be performed to be particularly
described and ascertained in and by the following statement:-
The said invention consists of a new or improved fire proof flooring and ceiling
the parts of which are constructed and combined or arranged in the manner herein-
after described.
In constructing the said new or improved fire proof flooring and ceiling we
employ parallel girders preferably of iron or steel of the kind known in commerce
as I girders, that is, girders consisting of a vertical web or body with a horizontal
flange at top and bottom, or instead of the said I girders we may employ
T girders, that is, girders the bodies of which have but one flange in which case
we use the said girders in an inverted position or with the flange downwards.
Between the said girders we introduce a series of parallel curved or arched light
bars of iron or steel the ends of each arched bar being flat and situated in the
same plane. The flat ends of the said arched bars rest upon the bottom flange of the
girders the said arched bars being at right angles to the said girders. We fill up
the spaces between the said arched bars with blocks of the fire proof composition known
in commerce as adamant. We employ by preference the adamant manufactured
by The Adamant Company Limited, but we do not limit ourselves thereto as other
kinds of adamant or fire proof cement may be used with nearly the same effect.
The said blocks of adamant or the like are oblong in figure their shorter ends
resting on the arched bars described and their junctions consequently being parallel
to the girders. The ends of the said blocks of adamant have rebates or recesses
in them in which the edges of the arched bars engage. When all the adamant
blocks have been put in position concrete is poured on the said blocks and girders
to a height a little above the top of the girders. The under surfaces of the
adamant blocks and arched bars and the horizontal bottoms of the girders of
the flooring thus made constitute the foundation of the ceiling of the room below
which said ceiling is completed by the use of adamant plastering applied to the
said undersurfaces. Or the ceiling may be completed by the use of other plastering
material.
Figure 1 of the accompanying drawing is a perspective illustration of a portion
of a fire proof flooring constructed according to the said invention before the
undersurface or ceiling of the room below has been finished by plastering;
Figure 2 is a transverse section of the finished fire proof flooring and ceiling
and Figure 3 is a longitudinal section of a portion of the said flooring and ceiling
Figure 2.
Figures 2 and 3 are drawn to a larger scale than Figure 1.
The same letters of reference indicate the same parts in the several figures of
the drawing.
In constructing a fire proof flooring and ceiling according to the said invention
we employ preferably I girders a, a the said girders running preferably in the
direction of the length of the floor to be made and we arrange between each pair
of girders a series of parallel arched iron or steel bars b, b, b the distance apart of
the said bars being varied according to the size of the adamant blocks to be used
in making up the flooring and ceiling. The ends of the said bars are made flat
or are shaped as indicated in dotted lines in Figure 2 where one of the said ends is
marked 62, so as to enable them to seat themselves on the lower flanges of the
girders a, a when the said bars are placed thereon. c, c, c are the adamant or

page_text: other fire proof cement blocks which are employed to fill up the spaces between
the girders a, a the ends of the said blocks c, c having undercut recesses,
(see Figure 3) for seating themselves on the bars b, b, the lower surfaces of the
said blocks c, e when in position being flush or nearly flush with the undersides
of the bars b, b. The blocks c, c, c (the opposed and meeting ends of which rest
on the bars b, b) are placed with their longer edges parallel to the girders a, a and
in contact with each other.
When the space between the girders a, a has been thus filled concrete is poured
on the said blocks and girders in sufficient quantity to raise the level of the floor
to the desired height. In the drawing the concrete is marked d. The under-
surface of the said blocks c, arched bars band girders a which constitutes the
ceiling of the room below, is finished by plastering it with adamant or other
plaster e.
By the formation or construction described a fire proof flooring and ceiling of
great strength is obtained, and of a weight much less than that of fire proof
floorings and ceilings as ordinarily made.
Although we have only represented and prefer to use girders of the kind
commonly called I girders yet we wish it to be understood that T shaped girders
may be employed with the same or nearly the same effect the said T shaped
girders being used in an inverted position, that is, with the flange at the bottom of
the vertical web of the girder.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed we declare that we claim
as the said invention :-
In the construction of fire proof floorings and ceilings the use in combination
with I or T girders of parallel arched metal bars extending from one girder to
another the ends of the said bars seating themselves on the flanges of the girders,
the space between each pair of arched bars and the sides of the girders by which
they are supported being filled by adamant or other fire proof cement blocks
which constitute with the said arched bars and supporting girders the foundation
for the concrete floor of the upper room and for the plaster of the ceiling of the
lower room substantially as herein before described and illustrated in the
accompanying drawing.
Dated the Twenty-eighth day of August 1895.
THE ADAMANT COMPANY, LIMITED,
By RHEECE W. PALK, Secretary.
JOHN WILKINSON.