IMPROVEMENTS IN STEAM AND WATER GAUGE TAPS
Year: 1882

page_text: LETTERS PATENT to Thomas Allison of Milnsbridge in Huddersfield in the
County of York. Brass founder and Brass-finisher, for an Invention of
86
IMPROVEMENTS IN STEAM AND WATER GAUGE TAPS
PROVISIONAL SPECIFICATION left by the said Thomas Allison at the Office
of the Commissioners of Patents on the 27th September 1882.
THOMAS ALLISON of Milnsbridge in Huddersfield in the County of York. Brass
founder and Brass-finisher. IMPROVEMENTS IN STEAM AND WATER GAUGE TAPS."
This invention relates to taps for regulating the passage of steam or water
through pipes, and is also applicable to those water gauge taps which are attached
to boilers in order to indicate the height of the water.
For this purpose we make use in our tap of a valve, which may be closed or
opened as required by means of a cam or swell affixed to a spindle, and which
bears upon the back of the valve. This spindle is operated from the outside by
means of a wheel or keg in the usual manner. .

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Thomas Allison in the Great Seal Patent Office on the 27th March
1883.
THOMAS ALLISON of Milnsbridge in Huddersfield in the County of York, Brass
Founder and Brass Finisher "IMPROVEMENTS IN STEAM AND WATER GUAGE TAPS
"
This invention relates to taps for regulating the passage of steam or water
through pipes, and is also applicable to those water guage taps which are attached
to boilers in order to indicate the height of the water.
For this purpose I make use in my tap of a valve which may be closed or
opened as required by means of a cam or swell affixed to a spindle, and which
bears upon the back of the valve. This spindle is operated from the outside by
means of a wheel or key in the usual manner.
Such being the nature and object of this my said invention I will now proceed
to describe the same in detail and in order that the invention may be fully
understood I have hereunto annexed a sheet of drawings and marked same
with figures of reference like figures denoting like parts on the several views.
DESCRIPTION OF THE DRAWINGS
Fig. 1 is a side elevation of water guage tap of steam boiler..
Fig 2 is a like elevation in section.
Fig 3 is a section on line A. B. of Fig: 2.
Fig 4 is a sectional elevation of steam tap.
:
At 1 is the barrel 2 a spindle on which is the eccentric or swell 3 within the
oblong strap 4 to which are secured the valves 5-6-7 is water way from the
-boiler at 8 is the water glass guage bush 9 is a blow off elbow and outlet. It
will be seen that as the handle (or a wheel) 10 be turned the eccentric or swell 3
will by acting on the strap 4 move the valve 5 from its seat 11 and will force the
opposite valve 6 to and upon its seat 12 or the reverse of this as the handle is
moved in one direction or the other so opening the passage way 7 from the boiler
or opening the outlet 9 for blowing off as and when necessary there being thus only
'one tap required.
The strap and valve 6 are introduced to the barrel 1 the valve 5 is then screwed
into its place in the strap 4 the elbow 13 is then screwed on and its angle 14 forms
the seat of the valve 5-the valve 6 has for its seat the part 15 in the barrel, at 16
is a spiral spring for the purpose of keeping the spindle and its eccentric in position
with the strap. The two caps 17. 18 are then screwed on to the faces of the
barrel 1 as shewn by Fig: 3.
Referring now to the single valve.tap Fig: 4-At 1 is the barrel-2 the spindle
on which is the eccentric or swell 3 which as the spindle is turned in one
direction bears on the valve 5 forcing the latter to and upon its seat 11 formed
by the angle or edge of the inlet way 7. The spindle 2 on being turned in the
opposite direction will move the eccentric or swell 3 away from the valve 5
permitting the latter to move from its seat 11 and the passage way is then
open. It will be observed the part 2 of the spindle 2 is slightly tapered so
as and by the action of the spiral spring 16 to plug and fit the conical part 3
of the screw cap 17 the latter being screwed out when the spindle and eccentric
are to be placed within or removed from the barrel of the tap.
Having thus fully described the nature and particulars of this my said invention
together with the manner in which the same is to be or may be performed or

page_text: •
carried into practical effect I would have it understood that what I claim as my
invention is
Firstly The construction of tap (illustrated by Figs 1. 2 and 3 of the drawings
annexed) comprising the combination of eccentric operating by the oblong strap
the valves as and for the purposes herein described.
Secondly-The general construction, combination and arrangements of the parts
of the tap illustrated by Fig: 4 of the annexed drawings and herein fully
described.
In Witness whereof I the said Thomas Allison have hereunto set my hand and
seal this twenty second day of March in the year of our Lord one thousand
eight hundred and eighty three
THOMAS ALLISON (L.S.)