Improvements in or relating to Floats for Valves and Cocks.
Year: 1897

page_text: Date of Application, 8th Oct., 1897-Accepted, 20th Aug., 1898
Improvements in or relating to Floats for Valves and Cocks.
. A communication from the Firm of FRIEDRICH WANGELIN, of Marschallstrasse 12,
Dresden, in the Empire of Germany.
I, ALFRED JULIUS BOULT, of 111, Hatton Garden, in the County of Middlesex,
Chartered Patent Agent, 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 this invention is a water tight float, the cover of which is secured
tightly to the edge of the lower portion of the float and is held fast by a special
flange in such manner that the possibility of liquid entering the float is prevented.
In floats used hitherto the joint had to be rendered water tight by soldering.
It is however very difficult to do it in a satisfactory manner and moreover the
float has then an unattractive appearance as the soldering material can never be
spread on it in a uniform manner. To avoid the necessity of soldering the lower
say semi-spherical portion of the float is provided according to the present inven-
tion with a peculiarly shaped flange in the continuous groove of which may be
placed for the sake of greater security some elastic packing material.
In the accompanying drawing,
Fig. 1 shows a float provided with a joint according to the present invention in
longitudinal section.
Fig. 2 is a longitudinal section of the lower part of the float before the edge is
turned in, and
Fig. 3 is a longitudinal section of the upper part of the float
Over the edge or flange 6 of the lower portion a of the float-which flange.b may
have a continuous groove c for packing material-is placed the flange a of the
cover e which may be flat curved or of other shape whereupon the two parts are
connected by folding over the projecting part of the flange b on to said flange d.
The pin for suspending or otherwise attaching the float to the float lever is
secured in a water tight manner by employing packing material and a metal-plate
and by rivetting it afterwards or it may be secured in any other suitable manner.
The shape of the flange 6 shown in the accompanying drawing whereby it is
adapted to be bent over the cover is the most suitable as owing to the upward
pressure of water on the lower part of the float and downward pressure of the weight
on the cover the two flanges are constantly pressed together but of course reverse
construction 'might be employed and the flange of the cover be bent under the
flange of the lower part of the float without departing from the spirit of the inven-
tion.
The method of manufacturing the separate parts referred to is well-known and
therefore is not described here.

page_text: Having now particularly described and ascertained the nature of this invention
as communicated to me by my foreign correspondents, I declare that what I claim
is:
-
1. A semi-spherical float provided with a cover as e the flange d of which is
received in a water tight manner by the folded flange of the semi-spherical
portion substantially as described.
2. A float provided with a cover as e the flange d of which is secured in a water
tight manner by the folded flange 6 of the lower part which latter flange is pro-
vided with a groove e filled with packing material substantially as described.
Dated this 8th day of October 1897.
BOULT & WADE,
Agents for the Applicant.