Improvements in Stair Treads and Coverings of Subways, Landings, and the like.
Year: 1898

page_text: Date of Application, 9th Aug., 1893
Complete Specification Left, 22nd Apr., 1899-Accepted, 27th May, 1899
PROVISIONAL SPECIFICATION.
Improvements in Stair Treads and Coverings of Subways, Landings,
and the like.
WILLIAM HERBERT BYSOUTH, 47, Spurstowe Road, Hackney, London, N.E.,
Builder, do hereby declare the nature of this invention to be as follows;-
My improvement consists of driving rows of dovetailed blocks of wood or other
form of keyed block into a rebated & grooved wrought or cast iron or steel frame,
either driven in from front or back as case may be, the treads may be secured to
the risers by any of the ordinary methods and may be adapted to iron, stone or
wood staircases the blocks of wood are held in position in front by means of an
iron bar of half round or other shaped section screwed to the bed or blocks and
at the back by a bar either cast on bed or frame or screwed thereto as case may be.
From the foregoing description it will be seen that when the upper surface of
wood blocks are worn down, they may be easily taken out as far back as necessary,
by simply taking off the front bar, and taking the rows of blocks out and fresh
ones inserted in their place at a very small cost and my system does not necessitate
moving the stair tread from where it is fixed to renew the blocks as in some other
stair treads, and as there is more wood to be worn away in my system before the
blocks need renewing thus the treads as made by my system will be very durable
& economical.
The wood blocks may be of any kind of wood and of any given size and the bed
made of any given size and shape to suit them and further the shape of tread also
the thickness may be varied to suit the circumstances.
Improvements in Stair Treads and Coverings of Subways, Landings,
and the like.
I, WILLIAM HERBERT BYSOUTH, of 47, Spurstowe Road, N.E., in the County of
London, Builder, do hereby declare the nature of this invention and in what man-
ner the same is to be performed to be particularly described and ascertained in
and by the following statement:-
This invention has for its principal object to provide an improved construction
for stair treads, subways, landings and the like, also to any other purpose for which
they are or may be applicable, the parts which are subjected to wear being con-

page_text: '
structed of the most suitable material for resisting the wearing action and to enable
the worn parts to be readily renewed and consists essentially in the employment
of dovetailed or other form of keyed blocks of suitable material fitting into cor-
respondingly shaped and suitably supported frames.
In the accompanying three sheets of illustrative drawings:
Fig. 1 is a vertical cross section of one tread of a wooden stair constructed accord-
ing to this invention and Fig. 2 is a transverse sectional elevation of the same.
Figs. 3 and 4 are vertical section and transverse sectional elevation respectively
of a modified arrangement of tread.
Figs. 5 and 6 are transverse sections of treads showing different sections of frame
and tread blocks.
Fig. 7 is a sectional elevation of a stone or composition stair case provided with
tread blocks according to this invention.
Figs. 8, 9 and 10 are transverse sections of tread blocks and supporting frame
showing various forms of cross section of key bar and tread block, and Figs. 11
and 12 are plan and transverse section of tread blocks with inlaid bars.
CASE
Referring to Figs. 1 and 2 dovetail shaped key bars a are secured to the tread b
connected to risers e in the usual manner and stiffened by a supporting T bar d.
The blocks c are driven or slid between the key bars a and are prevented from
being withdrawn by a nosing bar f secured to the key bars by screws & as shown:
Figs. 3 and 4 show key bars a secured to the risers c by angle plates gh, the
blocks e being retained in position by a nosing bar f fixed to the key bars a by
screws .
Figs. 5 and 6 show key bars a and tread blocks e of different cross section.
Figs. 7 to 10 inclusive show stair treads as arranged and constructed for stone
or artificial stone composition. A metal frame composed of the bars alis fitted
or embedded in the stone or composition step as the case may be, and the tread
blocks are driven in between the key bars a and fixed by the nosing barf as shown.
Figs. 8, 9 and 10 show various forms of the key bar a and blocks. e.
Figs. 11 and 12 show blocks formed with grooves or channels into which
strips m of lead or other suitable material are inserted.
I do not limit myself to the forms shown as any tread etc. formed by means of
keyed blocks slid into a corresponding frame is within the scope of my invention.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is:-
1. The improvements in stair treads and coverings of subways, landings, and the
like comprising key blocks secured by key bars in suitable frames or beds all
arranged and constructed substantially as described and shown.
2. A stair tread consisting of key blocks secured by key bars substantially as
described with reference to Figs. 1 to of the drawings.
3. A stair tread comprising key blocks secured to a frame by key bars substan-
tially as described with reference to Figs. 7 to 10 of the drawings.
4. A stair tread or the like consisting of key blocks secured to key bars and
having strips inserted in grooves or channels in the upper surfaces substantially
as described and shown in Figs. 11 and 12 of the drawings.
5. In a stair tread or the like the combination of tread blocks secured by key
bars substantially as described.
Dated this 18th day of April 1899