An Improvement in connection with the Water Gauge Glasses of Steam Boilers.
Year: 1896

page_text: Date of Application, 1st Oct., 1896
Complete Specification Left, 29th June, 1897-Accepted, 1st Oct., 1897
PROVISIONAL SPECIFICATION.
An Improvement in connection with the Water Gauge Glasses of
Steam Boilers.
I, JAMES FRENCH SERVICE of 5 Annfield Place, Dennistoun, Glasgow, Engineer,
do hereby declare the nature of this invention to be as follows:-
This invention relates to the water gauge glasses of steam boilers and it has for
its object to prevent the glass being scored or cut on the interior surface by steam
at a high pressure.
At present with boilers working at a high pressure the gauge glasses soon
become scored or cut and eventually burst.
My invention simply consists in fitting on either the steam end alone or on both
ends of the gauge glasses a lining made of metal or other suitable material. The
lining preferably takes the form of a short length of metal tube which extends
down into the steam end of the gauge glass for some inches. This tube is pro-
vided with a cup or receptacle at its upper end which is wholly or partially packed
with asbestos or similar material. The cup fits on the end of the glass tube.
If desired the tubular lining may be made of conic or partly conic form.
The receptacle or cup in which the end of the gauge glass is inserted may be
formed by either turning or folding back the metal of the lining or securing
thereto a short outer tubular piece or ring.
The lining is preferably made so as to fit loosely into the gauge glass.
A lining made of brass or copper is found to be very effective but it is to be
understood that I may make the lining of other material.
Dated this 30th day of September 1896.
H. D. FITZPATRICK,
70 Wellington Street, Glasgow, Agent.
COMPLETE SPECIFICATION.
An Improvement in connection with the Water Gauge Glasses of
Steam Boilers.
I JAMES FRENCH SERVICE Engineer 5 Annfield Place Dennistoun Glasgow 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 to the water gauge glasses of steam boilers and it has for
its object to prevent the glass being scored or cut on the interior surface by steam
at a high pressure.

page_text: At present with boilers working at a high pressure the gauge glasses soon
become scored or cut and eventually burst.
My invention simply consists in fitting on either the steam end alone or on both
ends of the gauge glasses a lining made of metal or other suitable material. The
lining preferably takes the form of a short length of metal tube which extends
down into the steam end of the gauge glass for some inches. This tube is pro-
vided with a cup or receptacle at its upper end which is wholly or partially packed
with asbestos or similar material. The cup fits on the end of the glass tube.
If desired the tubular lining may be made of conic or partly conic form.
The receptacle or cup in which the end of the gauge glass is inserted may be
formed by either turning or folding back the metal of the lining or securing
thereto a short outer tubular piece or ring.
The lining is preferably made so as to fit loosely into the gauge glass.
A lining made of brass or copper is found to be very effective but it is to be
understood that I may make the lining of other material.
The accompanying drawings illustrate the improvement already described.
Fig. 1 represents the elevation Fig. 2 the sectional elevation of the apparatus
applied to the steam end of the water gauge glass.
Fig. 3 shows the cup or receptacle for asbestos or other material after a gauge
glass has been put in position the apparatus is put through the steam cock by
unscrewing the top plug.
Having now particularly described and ascertained the nature of said inven-
tion and in what manner the same is to be performed I declare that what I
claim is:
The arrangement of the apparatus as described in the accompanying drawings
and specification for the cup or receptacle.
JAMES FRENCH SERVICE.