NEW OR IMPROVED SELF-ACTING APPLIANCE OR TRAP FOR LETTING OFF CONDENSED WATER FROM STEAM PIPES, CYLINDERS, AND OTHER PARTS FOR CONVEYING OR CONTAINING STEAM
Year: 1876

page_text: LETTERS PATENT to William Hamer, of Northwich, in the County of Chester,
for the Invention of "NEW OR IMPROVED SELF-ACTING APPLIANCE OR TRAP
FOR LETTING OFF CONDENSED WATER FROM STEAM PIPES, CYLINDERS, AND
OTHER PARTS FOR CONVEYING OR CONTAINING STEAM."
Sealed the 8th May 1877, and dated the 11th November 1876.
PROVISIONAL SPECIFICATION left by the said William Hamer at the Office
of the Commissioners of Patents on the 11th November 1876.
WILLIAM HAMER, of Northwich, in the County of Chester. "NEW OR IMPROVED
SELF-ACTING APPLIANCE OR TRAP FOR LETTING OFF CONDENSED WATER FROM
STEAM PIPES, CYLINDERS, AND OTHER PARTS FOR CONVEYING OR CONTAINING
STEAM."
According to this Invention I attach a float by preference hollow and made of
thin metal to the stem of an equilibrium or double seated valve, by preference of
ordinary mushroom shape, and with metallic seat faces and seats; between the two
valves the water outlet leads off; this appliance is placed in a box or chamber
communicating with or forming part of the steam pipe or other part to be drained,
and works in suitable guide or guides. When the box gets so far filled with con-
densed water that the float rises, the double valve also rises from the valve seats,
and the water entering through both, runs off by the aforesaid water outlet; when
the float sinks again the double valve closes.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by the
said William Hamer in the Great Seal Patent Office on the 11th May 1877.
WILLIAM HAMER, of Northwich, in the County of Chester. "NEW OR IMPROVED
SELF-ACTING APPLIANCE OR TRAP FOR LETTING OFF CONDENSED WATER FROM
STEAM PIPES, CYLINDERS, AND OTHER PARTS FOR CONVEYING OR CONTAINING
STEAM."
According to this Invention I attach a float, by preference hollow and made of
thin metal, to the stem of an equilibrium or double seated valve, by preference of

page_text: ordinary mushroom shape and with metallic seat faces and seats; between the two
valves the water outlet leads off; this appliance is placed in a box or chamber
communicating with or forming part of the steam pipe or other part to be drained,
and works in suitable guide or guides. When the box gets so far filled with con-
densed water that the float rises, the double valve also rises from the valve seats,
and the water entering through both, runs off by the aforesaid water outlet, when
the float sinking again the double valve closes.
And in order that this my Invention may be more clearly understood, I will now
proceed to describe an apparatus constructed in accordance therewith and suitable
for connecting to a steam pipe, steam cylinder, or other vessel containing or con-
veying steam.
Figure 1 is a vertical section through an apparatus in box form, and Figure 2 a
plan of same with the cover removed.
A is the box of the apparatus conveniently made of cast iron and closed with a
cover on the top as shewn. In the lower part of the box is fixed a valve fitting
containing a valve C which is double seated, and in this case of the ordinary
mushroom form; being double seated it is almost in equilibrium as is well known,
so that it takes a very slight force to raise the valves from their seats if there be no
pressure in between the two valves or if there be less pressure there than outside
the same.
The stem of the valve is fitted with a float, say of wood or other suitable
material lighter than water, or it may be as here intended, a light hollow copper
ball which however must be tight and withstand the steam pressure. The valve
stem is guided in a guide bracket D as here shown, which I consider the best mode,
but the valve might if preferred be guided by a stem formed on or fitted to the
under side of the lower valve either alone or in addition to the guide above the
upper valve; such a lower guide however involves greater depth of box, and one
guide above I find suitable and sufficient for general purposes. E is the inlet pipe
connecting the apparatus with the steam pipe or other steam container or conduit;
F is the outlet for the condensed water.
The action of the apparatus is as follows:-As soon as the water has accumulated
so far in the box A as to lift the float floating therein, the valve C will rise from
its seats, say to the position shewn in the dotted lines, and allow the escape of the
water from the box A through both the valve seat openings by the outlet pipe F;
the float and valve then gradually sink down into their original or normal position,
the double valve being closed.
And having thus fully described the nature of this my Invention, I declare that
I claim, the application of a float to the stem of a double beat valve of a steam trap,
substantially as herein set forth.
In witness whereof, I, the said Willian Hamer, have hereunto set my hand
and seal, this Third day of May, in the year of our Lord One thousand eight
hundred and seventy-seven.
WILLIAM HAMER. (L.S.)