Improvements in Apparatus for Laying Fire Proof and other similar Floors.
Year: 1893

page_text: Date of Application, 10th Aug., 1893
Complete Specification Left, 8th May, 1894-Accepted, 16th June, 1894
IRUVIDIONAL
Improvements in Apparatus for Laying Fire Proof and other
similar Floors.
1 HENRY HOOD of 70 Cambridge Road Mile End in the County of Middlesex
Builder do hereby declare the nature of this invention to be as follows:-
The object of my invention is to facilitate the laying of fire proof and other
similar floors and to cheapen the construction of same:
This object is effected by using short pieces or bars of iron steel or other
suitable material having a slot in the upper part to slip on to the flange of the
girder and having another slot at right angles to the former in the lower part of
same capable of receiving a cross bar of iron steel or other suitable material and
both slots being at right angles or nearly at right angles to the axis of the bar.
These slotted bars or hangers are hung on to adjoining girders opposite to one.
another at suitable intervals and the cross bars passed between them. The slotted
bars or hangers being wedged on to the girder with small wooden wedges.
The cross bars above mentioned form a support for the boards upon which the
cement or other material for the floor is laid and the boards being laid side by side
and filling up the opening between the two slotted bars or hangers attached to
the girders on either side help to keep same in place.
A useful size for the slotted bars or hangers to be attached or hung on to the
girder is a bar 2 inches or 2 inches square and about or 6 inches long having its
upper slot about or half an inch from the upper end and such slot having about
a inch mouth or opening suitable to receive the flange of the ordinary size girder
and having a depth of about 1.
The slot to receive the cross bar has its upper edge about an inch or a little
more below the bottom of the other slot and about an inch and a quarter or Bo
deep and preferably slopes downwards the opening or mouth being about the
same size.
The cross bar must be of sufficient length to reach from girder and of sufficient
strength to support the boards and material to be superimposed.
An iron bar an inch or rather more in diameter either round or square or a piece
of gas barrel of about the same size, forms a useful cross bar.
A suitable clip or pin to close the slot for its reception may be used to keep it
in its place if desired.
A rough drawing is annexed for the purpose of illustration.
Dated this 10th day of August 1893.
CHAS. R. TAYLOR,
63 & 64, New Broad Street, E.C., Solicitor and Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Apparatus for Laying Fire Proof and other
similar Floors.
I HENRY HOOD of 70 Cambridge Road Mile End in the County of Middlesex
Builder, do hereby declare the nature of this invention and in what manner the
same is performed, to be particularly described and ascertained in and by the
following statement :-
The object of my invention is to facilitate the laying of fire proof and other

page_text: similar floors made of concrete or other similar material and to cheapen the
construction of same. This object is effected by using short pieces or bars of iron
steel or other suitable material having a slot in the upper part of a size just
sufficiently large enough to slip on to the flange of the girders used in the
construction of such floors and having another slot at right angles to the former in
the lower part of the same short pieces or bars capable of receiving a cross bar of
iron steel or other suitable material and both slots being at right angles or nearly
at right angles to the axis of the slotted bar.
These slotted bars or hangers are hung ou to adjoining girders opposite to one
another at suitable intervals and the cross bar passed between them so that each
end of the cross bar rests in the lower slot of each slotted bar or hanger the latter
being wedged on to the girder with small wooden or other suitable wedges inserted
in the upper slot.
The cross bars above mentioned when fixed in the slotted bars or hangers form
a support for the boards or seating upon which the cement or other material for
the floor is laid. I prefer boards as such boards being laid side by side fill up the
opening between the two adjoining girders and also between the slotted bars or
hangers attached to such girders and help to keep the slotted bars or haugers in
place.
A useful size for the slotted bars or hangers is two inches or two and a half
inches square or in diameter and about five or six inches long. The upper slot is
most convenient about or half an inch from the upper end and a inch mouth or
opening is a size suitable to receive the flange of the ordinary sized girder-the
depth of such upper slot should be about 1 inch.
The dimensions of this slot will of course vary according to the size of the
'girder to which the slotted bars are to be attached.
The slot to receive the cross bar may conveniently have its upper edge about an
inch or a little more below the bottom edge of the upper slot and about an inch
and a quarter or so deep according to the size of bar to be inserted and preferably
should slope downwards the opening or mouth being sufficiently large to admit the
cross bar. The cross bar must be of sufficient length to reach from girder to
girder and to project an inch or two beyond each slotted bar or hanger and of
sufficient strength to support the boards and material to be superimposed.
An iron bar an inch or rather more in diameter either round or square or a piece
of gas barrel about the same size forms a useful cross bar.
A suitable clip or pin to close the opening of the slot for the reception of the
cross bar may be used to keep it in its place if desired.
The drawing annexed to the Provisional Specification is referred to for the
purpose of illustration.
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
1. The combination of the slotted-bars or hangers with the cross bar and boards
or other seating for the cement or other material for the floors substantially as and
for the purposes herein shown and described.
2. The mode of supporting the boards or seating for the laying of concrete and
similar floors supported by girders by means of the cross bar resting in slotted bars
hung on to the girders substantially as and for the purposes herein shown and
described.
CHAS. R. TAYLOR,
63 & 64, New Broad Street, E.C., Solicitor and Agent for the Applicant.