Improvements in Stair Treads and other Floor Surfaces.
Year: 1895

page_text: Date of Application, 6th Apr., 1895
PROVISIONAL SPECIFICATION.
Improvements in Stair Treads and other Floor Surfaces.
We, JOHN WILLIAM CLAUGHTON, THOMAS CLAUGHTON, and JAMES HENRY
CLAUGHTON, all of the Firm of Claughton Brothers, of Bramley, near Leeds, in the
County of York, Plumbers and Lead Founders, do hereby declare the nature of
this invention to be as follows:-
The object of our invention is to construct stair treads and other floor surfaces,
in such a manner that they are of a soft and non-slipping nature, whilst at the same
time they are exceedingly strong and durable.
According to our invention we provide a trellis-work or other framework, which
may be formed with perforations in squares, diamonds or in other patterns,
the edges of the said perforations being bevelled inwards towards the base. The
trellis-work frame is preferably cast in iron, brass, or other hard metal, and the
bevel edged perforations are filled with lead or other soft non-slipping material,
which is united at the back of the frame in a continuous sheet. The surface
of the lead filling the bevelled perforations, is at the same height as the surface
of the frame, so that the surface of the stair tread is formed of a lead pattern,
protected on its edges by a frame of stronger material.
In forming stair treads as above described a mould is employed having studs on
its lower plate, for the purpose of supporting the frame apart from contact.
with the base of the said mould. The cover of the mould is placed on the
upper surface of the frame so as to enclose the perforations at the top.
On the lead being poured into the mould, it passes beneath the frame and rises
into the perforations being prevented from rising. above the edges by the cover
above referred to. When the lead cools, it forms a continuous sheet at the back
with projections filling the perforations in the framework, and the said projections
being larger at their upper ends, owing to the bevelled interior clges of the
perforations, lock the parts firmly in position.
In making large treads or coverings, we may construct the frame in sections,
which meet or come adjacent to each other in the mould, in such a manner as to be
firmly held and locked on the pouring of the lead; aud in the interior of these
sections, ornamental bevelled edged patterns may be formed, which also become
held by the lead in the pouring process.
Dated this 6th day of April 1895.
We, JOHN WILLIAM CLAUGHTON, THOMAS CLAUGHTON, and JAMES HENRY
CLAUGHTON, all of the Firm of Claughton Brothers, of Bramley, near Leeds, in
the County of York, Plumbers and Lead Founders, 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 our invention is to construct stair treads and other floor surfaces,

page_text: in such a manner that they are of a soft and non-slipping nature, whilst at the same
time they are exceedingly strong and durable.
In order that our invention may be clearly understood, we will proceed to
describe same with reference to the accompanying drawing in which similar letters
refer to like parts in all the figures.
Fig. 1 is a plan of a portion of a stair tread constructed according to our
invention, and Figs. 2 and 3, are respectively longitudinal and cross sections taken
on the lines X, X, and Y, Y, of Fig. 1.
Fig. 4 is a section of a portion of a mould employed in the construction of a stair
tread of the description above described.
According to our invention, we employ a framework A, which may be of trellis-
work form having perforations in same of suitable patterns, and the edges of
the said perforations are bevelled inwards as seen at B Figs. 2, 3, and 4. The
frame A is preferably cast in iron, brass, or other hard metal, and the bevel
edged perforations are filled with lead or other soft non-slipping material C,
which is united at the. back of the frame A in a continuous sheet. The surface
of the lead C is at the same height as the surface of the frame, so that the
surface of the stair tread is formed of a lead pattern protected by a frame of
stronger material.
The stair treads above described may be cast in sand or a mould of the
description shewn at Fig. 4 may be employed. D is the lower plate of the
mould and E are studs for the purpose of supporting the frame A in
the required position in the mould. F is the cover to the mould which is placed
on the surface of the frame thus enclosing the perforations.
On the lead being poured into the mould, it passes beneath the frame A and
rises into the perforations, being prevented from rising above the edges of the
frame A by means of the cover F above referred to. When the lead cools,.
it forms a continuous sheet at the back with projections filling the perforations
in the framework A, and the said projections being larger at their upper ends,
owing to the bevelled interior edges B of the perforations, lock the parts firmly in
position.
In making large treads or coverings, we may construct the frame in sections,
which meet or come adjacent to each other in the mould, in such a manner as
to become locked and firmly held on the pouring of the lead; and in the interior
of these sections, ornamental bevelled edged patterns may be formed, which also
become held by the lead in the pouring process.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is :-
1. A stair tread or other floor surface, composed of a hard metal framework
having bevelled edged perforations in same the said perforations being filled with
a non-slipping metal or material formed in a piece with a locking sheet at the
back of the framework, substantially as and for the purposes set forth.
2. The mould having lower plate D, studs E, and cover F, for forming the tread
or covering, substantially as set forth.
3. A stair tread or other floor surface, composed of hard metal frameworks,
locked together by soft non-slipping material, substantially as and for the purposes
set forth.
4. The combination of the frame A with its bevelled edges B, and the lead or
other non-slipping material C, cast together, substantially as and for the purposes
set forth.
Dated this 2nd day of January 1896.
BREWER & SON,
London and Leeds, Agents for the Applicants.