IMPROVEMENTS IN NOZINGS FOR STAIR TREADS
Year: 1884

page_text: PROVISIONAL SPECIFICATION.
I, FREDERICK WILLIAM HEMBRY 16 Newgate Street, E.C. in the City of
London, Manager to the firm of Messre B. Hembry and Co Linoleum Merchants
16 Newgate St London and Cross St Manchester do hereby declare the nature of
my invention for IMPROVEMENTS IN NOZINGS FOR STAIR TREADS, to be as
follows:-
I form the nozings or treads of a plate of perforated metal or wire gauze of any
desired strength or thickness upon which I fix by cement a sheet of India Rubber
and under the plate the same India Rubber is continued or some other soft and
suitable fabric is fixed and cemented, the cement passing through the perforations
in metal or gauze plate connects the upper and under surfaces inseparably together,
the edges I join, mould or cement together, entirely enclosing the metal frame,
I sometimes apply the India rubber on both sides of the plate before being
vulcanized and then expose it to the heat of the vulcanizing chamber. These
nozings are altogether free from the objection of those made simply with rubber
cemented on to a plain metal plate bent up over the edge of rubber, which in time
wears away, they are also free from the objection of those nozings made with a
frame or foundation of hard vulcanized rubber which frequently cracks on uneven
stairs.
The nozing or tread is fixed to the stair by means of screws passing through
the rubber and enclosed metal frame.

page_text: COMPLETE SPECIFICATION.
I, FREDERICK WILLIAM HEMBRY, of 16 Newgate Street, London, Manager
to B. Hembry & C° of the same address, do hereby declare the nature of my
invention for IMPROVEMENTS IN NOZINGS FOR STAIR TREADS and in what
manner the same is to be performed, to be particularly described and ascertained
in and by the following statement :—
I form the nozings or treads of a plate of perforated metal or wire gauze of any
desired strength or thickness upon which I fix by cement a sheet of India Rubber
and under the plate the same India Rubber is continued or some other soft and
suitable fabric is fixed and cemented, the cement passing through the perforations
in metal a gauze plate connects the upper and under surfaces inseparably 1
together, the edges I join, mould or cement together, entirely enclosing the metal
frame, I sometimes apply the India Rubber on both sides of the plate before being
being vulcanized and then expose it to the heat of the vulcanizing chamber. These
nozings are altogether free from the objection of those made simply with rubber
cemented on to a plain metal plate bent up over the edge of rubber which in time 1
wears away, they are also free from the objection of those nozings made with a
frame or foundation of hard vulcanized rubber which frequently cracks on uneven
stairs. The nozings or tread is fixed to the stair by means of screws passing
through the rubber and enclosed metal frame.
So that my said Invention shall be the better understood I will proceed by means 2
of drawings hereunto annexed to describe its manufacture.
DESCRIPTION OF THE DRAWINGS.
Figure 1 and 2 are plans showing the rubber cloth or other backing, the gauze
or perforated metal frame laid upon it and the thick facing of Rubber, and
Figure 3 is a transverse section of a stair clip according to my invention. A. A. A. 2
is the backing of the size of intended clip, B. B. B is a gauze or perforated plate
or frame (preferably of metal) leaving a margin on either side, while C. C. C is the
superimposed sheet of India Rubber which is cut to the size of the foundation or
backing A. A. A. this I fasten by means of rubber cement or in the vulcanizing
chamber, thus making the whole into one solid plate which is bent as shown in 8
Figure 3.
Having thus fully described the nature of my said Invention and the manner
in which the same may be performed I would have it understood that I claim for
it the combination of Rubber with the perforated or gauze insertion frame or plate
substantially as described and illustrated by the drawings annexed.
Dated this Twents Arst day of May 1885