Year: 1899

page_text: We. WILLIAM ALLDAY and EDMUND ALLDAY, both of Great Western Works,
Sydenham Road, Birmingham, in the County of Warwick, Manufacturers, do
hereby declare the nature of this invention to be as follows:-
Our invention has for its object to prevent injury to the valves of bellows at
the air intake hole in the back board of the bellows as well as to prevent the
entrance of vermin into the interior of the bellows at the said air intake hole;
and our said invention consists in providing the air intake hole with a per-
forated cover or diaphragm as hereinafter described.
Our improvements are applicable to house and moulders' bellows, blacksmiths'
bellows and the bellows of portable forges and other kinds of bellows.
The perforated cover or valve protector may either be applied to the interior
of the air intake hole or to the outside thereof.
In carrying our invention into effect we take a disc of finely perforated zinc
or other metal, or a disc of fine wire gauze and flange its edge so as to form a
shallow cup, the said cupped or flanged disc having such a diameter that it will
fit closely in the air intake hole in the back-board of the bellows. Having
fitted the cupped or flanged perforated disc in the said air intake hole from
the inside thereof, it is fixed in its place by pinning or nailing it, by its side
or flange, to the inside of the said hole. A finely perforated diaphragm or cover
is thus fixed near the bottom of the air intake hole and over the valve at the
bottom of the said hole, and the valve is thereby protected from injury and
access of vermin to the interior of the bellows prevented.
Instead of fixing the finely perforated cover or valve protector in the inside
and near the bottom of the air intake hole, it may be fixed to the outside of the
said hole; and when using either of the arrangements described a metal grid
may be fixed over the outside of the air intake hole for protecting the said
perforated cover or diaphragm from injury.
Although we have only described the perforated cover or diaphragm for pro-
tecting the valve as made of perforated sheet metal or wire gauze yet the valve
protecting cover or diaphragm may be otherwise made.
Dated this Twants fifth dox of April 1899
W. T. WHITEMAN,
Agent for the Applicants.

page_text: hereby declare the nature of our invention and in what manner the same is
to be performed to be particularly described and ascertained in and by the
following statement:-
Our invention has for its object to prevent injury to the valves of bellows at
the air intake hole in the back board of the bellows as well as to prevent the
entrance of vermin into the interior of the bellows at the said air intake hole;
and our said invention consists in providing the air intake hole with a per-
forated cover or diaphragm as hereinafter described.
Our improvements are applicable to house and moulders' bellows, blacksmiths'
bellows and the bellows of portable forges and other kinds of bellows.
The perforated cover or valve protector may either be applied to the interior
of the air intake hole or to the outside thereof.
In carrying our invention into effect we take a disc of finely perforated zinc
or other metal, or a disc of fine wire gauze and flange its edge so as to form a
shallow cup, the said cupped or flanged disc having such a diameter that it will
fit closely in the air intake hole in the back-board of the bellows. Having
fitted the cupped or flanged perforated disc in the said air intake hole from
the inside thereof, it is fixed in its place by pinning or nailing it, by its side
or flange to the inside of the said hole. A finely perforated diaphragm or cover
is thus fixed near the bottom of the air intake hole and over the valve at the
bottom of the said hole, and the valve is thereby protected from injury and
access of vermin to the interior of the bellows prevented.
Instead of fixing the finely perforated cover or valve protector in the inside
and near the bottom of the air intake hole, it may be fixed to the outside of the
said hole; and when using either of the arrangements described a metal grid
may be fixed over the outside of the air intake hole for protecting the said
perforated cover or diaphragm from injury.
Figure 1 of the accompanying drawing represents in plan of underside and
Figure 2 in side elevation, partly in longitudinal section a pair of moulders'
bellows containing our improvements.
Figures 3, 4 and 5 represent a modified arrangement of the perforated cover or
valve protector of the said bellows.
The same letters of reference indicate the same parts in the several figures of the
drawing.
a is the backboard of the bellows and is the air intake hole in the same
c is the ordinary flap valve which valve c it is the object of our invention to protect
from injury as well as to prevent the entrance of mice or other vermin into the
interior of the bellows. For this purpose we make preferably of perforated zinc,
a shallow dish or cup of a size proper to fit the air intake hole 6 of the bellows.
The said shallow perforated dish or cup d is applied to the back-board from the inner-
side of the same and is fixed in the air intake hole b by pins or nails e, e before the
said back-board is secured to the leather body f of the bellows. The perforated cup
or dish d may be secured in the air intake hole b at a short distance from the
bottom or innerside of the said hole as represented in Figure 2; or it may be
arranged so that the bottom of the said cup d shall be flush with the bottom
of the intake hole as represented in Figures 3 and 4. One of the perforated
cups is shown separately in Figure 5.
We wish it to be understood that we do not limit ourselves to the use of finely
perforated zinc for the cover or protector. In Figures 3, 4 and 5 the perforations
in the zinc cup are somewhat larger than the perforations in the cup d shown in
Figures 1 and 2.
And although we prefer to make the said valve covers or protectors of perforated
sheet metal as herein before described and represented, or of wire gauze yet the
valve protecting covers or diaphragms may be otherwise made. For example a
series of parallel metallic bars or of crossing bars or other reticulated structure
may be arranged in or over the air intake hole for protecting the valve of the
same.

page_text: Having now particularly described and ascertained the nature of our inven-
tion and in what manner the same is to be performed we declare that we claim
as our invention:-
The improvements in bellows hereinbefore described and illustrated in the
accompanying drawing the said improvements consisting in applying to the air
intake hole of the bellows a disc of perforated sheet metal or a disc of wire
gauze or other reticulated protecting shield or cover substantially as and for the
purposes herein before described and illustrated.
Dated the Fifth day of January 1900.