Improvements in the Method of Fitting Gauge-glasses and in the Means Employed therefor, Particularly Applicable to Steam Boilers and Sight Feed Lubricators.
Year: 1886

page_text: Date of Application, 15th Dec., 886.
Complete Left, 15th Sept., 1887,
Complete Accepted, 18th Oct., 1887
Improvements in the Method of Fitting Gauge-glasses and in the
Means Employed therefor, Particularly Applicable to Steam
Boilers and Sight Feed Lubricators.
WILLIAM EVANS of 33 Singhton Street Swansea in the County of Glamorgan
Mechanical Engineer do hereby declare the nature of this invention to be as
follows:-
This Invention relates more particularly to that description of gauge-glass employed
in connection with Steam Boilers for indicating the height of the water in the same,
and also in connection with the sight Oil feeder fittings.
It is well known that the top and bottom coupling nuts now employed for making
the connection with the gauge-glass, and the tubular elbow-pieces communicating
with the water, and steam spaces of the boiler are both provided with right handed
threads, by this arrangement it is obvious that when new glasses are being fit in, or
old ones repacked the turning of the nuts in opposite directions will cause the
packing substances to unduly press against such glasses, and by the opposite forces
thus exerted break the glass.
The object of this invention is to prevent accidents from breakage occurring at the
time the glasses are being fit in or repacked by simply making the fittings top and
bottom, one with a screw having a right-handed thread, and the other a left-handed
thread; so that when tightening up the top, and bottom nuts the gauge-glass will
always turn, and be acted on uniformly in one direction, thereby preventing any
twisting strain on the gauge glass.
Dated this 15th day of December 1886
THOS. WRIGLEY,
36, High Holborn, W.C.,
Agent to the Applicant.

page_text: Improvements in the Method of Fitting Gauge-glasses and in the
Means Employed therefor, Particularly Applicable to Steam
Boilers and Sight Feed Lubricators.
I, WILLIAM EVANS, of 33 Singhton Street, Swansea, in the County of Glamorgan,
Mechanical Engineer, 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 relates more particularly to that description of gauge-glass employed
in connection with steam boilers, for indicating the height of the water in the same,
and also in connection with sight oil-feeder fittings.
According to the ordinary method of construction, the top and bottom coupling
nuts employed for making the connection with the gauge-glass and the tubular elbow-
pieces communicating with the water and steam spaces of the boiler, are both provided
with right handed threads, by this arrangement it is obvious that when new glasses are
being fitted in, or old ones repacked, the turning of the nuts in opposite directions will
cause the packing to unduly press against the glass, and by the opposite forces thus
exerted, tend to twist and break the glass.
The object of my invention is to prevent accidents from the above cause by simply
making the fittings top and bottom, one with a screw having a right-handed thread,
and the other a left-handed thread, so that when tightening up the top, and bottom
nuts, they will both turn in the same direction, and the glass will turn with them, and
be acted on uniformly in one direction, thereby preventing any twisting strain on the
said glass.
The accompanying drawing represents an elevation of a steam boiler water gauge
constructed according to my invention, wherein A is the gauge glass, B, B¹, are the
ordinary elbow fittings, and C, D, are the screw glands which form the stuffing-box
joints, Chaving a right hand thread, and D, a left hand thread or vice versa so that
they are both turned in the same direction to tighten up the joints.
It will be understood that I lay no claim to the particular pattern of fittings shewn ;
as the saine may be varied to any desired extent, and that my invention is equally
applicable to a sight oil-feed fitting, or to any other kind of fitting wherein a gauge
glass is secured at the ends by stuffing-box joints, having screw glands.

page_text: Having now particularly described and ascertained the nature of my said invention,
and in what manner the same is to be performed, I declare that what I claim is:
In a water gauge, or other similar fitting, wherein a gauge-glass is secured at the
ends by stuffing-box joints having screw glands, the construction of such glands with
right and left-handed threads respectively, so that they both turn in the same direction
to tighten the joints substantially as herein set forth.
Dated this Fifteenth day of September 1887.
T. WRIGLEY,
36, High Holborn, W.C.,
Agent for the Applicant.