Year: 1888

page_text: Date of Application, 26th July, 1888
Complete Specification Left, 23rd Feb., 1889
Complete Specification Accepted, 6th Apr., 1889
WILLIAM GARSIDE COOK Glendontan Villa Bridge-of-Weir Forge & Bellows
Maker do hereby declare the nature of this invention to be as follows:-
The improvements in Forges and Bellows consists in placeing a valve or check
valve within the blow pipe, between the Bellows and Forge Fire, or, in placeing a
valve or check valve in the nose ring or in the nozzel pipe of Smiths Bellows.
For the purpose of preventing back suction or accumulation of gas or smoke
from the fire in the Bellows, thereby preventing the exploding or bursting of the
Bellows.

page_text: Improvements in Forges and Bellows.
I WILLIAM GARSIDE COOK, Glendentan Villa, Bridge of Weir in the County of
Renfrew North Britain Forge and Bellows Maker 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:—
This Invention which relates to Improvements in Forges and Bellows consists
in placing a check valve within the blow pipe between the bellows and forge
fire, or in placing a check valve in the nose ring or in the nozzle pipe of Smiths
Bellows.
The object of the Invention is to prevent back suction or accumulation of Gas or
smoke in the Bellows from the forge fires and thereby prevent the exploding or bursting
of the bellows.
In order that my Invention may be most fully understood and readily carried into
effect I will proceed to describe the drawings hereunto annexed.
Figures 1 2 3 4 and 5 illustrate one of the arrangements according to my Invention
for preventing back suction or accumulation of gas or smoke in the bellows from the
forge fires, Figure 1 representing a vertical section of the blow pipe and its adjuncts,
Figure 2 being a sectional plan of the same taken on the line A. B. Figure 1, and
Figures 3, 4 and 5 being enlarged views of the check valve and its seat
According to the arrangement illustrated in the said figures, I place the check
valve C, within the lower branch d, of the blow pipe D, and directly communicating
with the bellows E. The said branch d, and valve C, are constructed as follows:-In
ordinary portable forges the branch pipe d, is made circular, but I prefer to make it
rectangular. The check valve C, is made of brass or other suitable metal and of the
flap or clack vale pattern, it is pivoted at F and when shut is inclined at an angle
of 45° to the horizon. The valve seat G is cast separately from the blow-pipe D,
and besides the necessary snug to form a hinge for the valve C, is provided with a
square flange g, and circular boss g¹. By means of the said flange g and boss g¹, the
valve C with its seat G are held securely in position without the use of bolts or other
fixing, the flange g, being fitted into a recess in the curved flange d', of the blow
pipe D, whilst the boss g¹ is inserted into the centre board of the bellows E. The
valve C, can thus be easily and quickly dismounted or changed when required. J is
the ordinary tuyere and K the hearth of the usual portable forge with single acting
bellows.
Another arrangement of the blow pipe D and check valve C, is illustrated in
Figures 6-7 and 8, where Figure 6 is an elevation of the blow-pipe D and its
adjuncts, whilst figure 7 is a vertical section of the check valve C, situated within the
nozzle or outlet end of the blow-pipe D, taken on the line x, x Figure 8, and
Figure 8 a sectional plan of the same on the line
yy, Figure 7. As shown in the
said figures 6, 7 and 8 the lower portion of the blow pipe D, (including the branch d)
is of the usual construction for portable forges having single acting bellows, but the
upper portion which contains the check valve C is arranged differently, and is con-
structed as follows. Instead of making the blow pipe D in a single casting as is the

page_text: custom at present the nozzle or air outlet end d is cast separately and bolted at the
flanges d, and d, to the vertical portion of the blow-pipe D, the said flanges being
either faced or jointed with asbestos packing as shown at Figure 7, of the annexed
drawings. The check valve C is of similar construction to that already described,
being a clack valve pivoted at F, and when shut lies obliquely on its seat G. The
said valve seat G, is by preference cast centrally on the upper end of the vertical
portion of the blow pipe D, and projects beyond the flange d', it is of rectangular
section as represented in plan at Figure 8, and may be slightly smaller in diameter
than the blow pipe D. The nozzle d', which forms the cover or hood for the
valve C, is made of sufficient diameter to allow of the free action of the said check
valve C.
For double acting bellows, and where the hearth is situated at one side of the same
instead of above as hereinbefore described, I prefer the arrangement of the blow-pipe
and check valve represented at Figures 9, 10 & 11, Figure 9 being an elevation of
the said blow pipe and valve, whilst Figures 10 and 11 are details drawn to an enlarged
scale for the better illustration of certain of the parts.
This improvement consists in providing a short pipe or casing L for the valve C
and seat G, the said casing L, being secured at the flanged end to the centre board of
the bellows H, by screw pins or otherwise whilst the nozzle M which enters the tuyere
in the fire is connected through the intervention of the flexible pipe N to the plain
end of the casing L. As in the previous example illustrated in figures 3, 4 and 5, the
valve seat G is independent and movable, being kept in position (when the casing L
is secured to the bellows H) by an oblong flange g and boss g¹.
Figure 12, is a representation or arrangement of the check valve C, seat situated
within the nozzle pipe P of the smith's bellows, whilst figure 13 is an end view of
the valve and seat with the bellows removed.
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
1 claim is,
First. The use of the check valve C in portable or fixed forges having single or
double acting bellows, substantially as herein before described and for the purpose
specified with reference to the annexed drawings.
Second. The arrangement of the combined check valve C, and movable seat G
placed within the branch d, of the blow-pipe D, as hereinbefore described and illustrated
in Figures 1, 2, 3, 4 and 5 of the annexed drawings.
Third. In portable forges the arrangement of the valve C in relation to its fixed
seat G, and combined hood and nozzle d*, substantially as and for the purpose specified,
with reference to Figures 6, 7 and 8 of the drawings hereto annexed.
Fourth. In double acting bellows the combination of the casing L, valve C, and
seat G, as hereinbefore described and illustrated in Figures 9, 10 and 11 of the annexed
drawings.
Fifth. In smiths bellows the use of the check valve C, substantially as described
with reference to figures 12 and 13, of the annexed drawings.
Dated this 8th day of February 1889
D. DRYSDALE AUSTIN,
Applicant's Agent.