Improvements in or relating to Shields for the Gauge Glasses of Steam and other Boilers.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Improvements in or relating to Shields for the Gauge Glasses of
Steam and other Boilers.
I, CHARLES HENRY LAVERICK, of The Fall, East Ardsley, near Wakefield, in
the County of York, Engineer, do hereby declare the nature of this invention
to be as follows:―
This invention relates to improvements in shields for the water gauges of steam
and other boilers, and its object is not only to protect such glasses from break-
age, but also to prevent injury to the attendant in the case of breakage and at
the same time permits of the glass being as readily examined as at present.
According to this invention the shield may be made of any suitable material,
such as for example, say, of brass, or other metal or of toughened glass, or the
like, and it may be made of any suitable length, size, shape or contour in cross
section, such as for instance say circular, or hexagonal, or the like.
The shield may be made in, say three parts, namely a top and bottom support
and an intermediate portion or shield proper. The top and bottom pieces may
be made of the same or varying lengths and when, say, in circular form in ring
form and of such a size as to wholly or partially cover the gland nuts of the
gauge. A projecting rim or a number of projections is or are provided respec-
tively on the inner perimeter of the top and bottom piece at a suitable distance
from their ends for supporting the said pieces on the tops of the gland nuts.
vertical aperture is also cut in the top and bottom pieces of a rather wider width
than the gauge glass to allow of the top and bottom pieces being placed in
position without unshipping the glass.
A
The intermediate piece or shield proper may be made in skeleton form when,
say of metal, and it is made to fit within the top and bottom piece so that its
ends, when fixed in position will abut against the internal flange or flanges on
the said pieces. The shield or intermediate piece is provided with a longitu-
dinal opening at the back extend the whole of its length, and made of, say,
metal with any desired number of longitudinal slits extends a portion of its
length for inspection purposes. But these last named slits may be dispensed, if
desired, when made of glass. The shield may, if so desired, be provided at each
end with strengthening pieces fixed thereto by any suitable means, such as say
by rivets, cement, or the like, and the shield may be fixed in position by one or
more set screws provided in either the top or bottom piece or both.
By the herein described means the various parts can be applied to a gauge
glass without disturbing the same, and should the glass at any time become
Broken the shield will prevent the various portions of the glass from "flying"
or being thrown about to the injury of the attendant.
Dated this Fourteenth day of July 1898.

page_text: Improvements in or relating to Shields for the Gauge Glasses of
Steam and other Boilers.
I, CHARLES HENRY LAVERICK, of The Fall, East Ardsley, near Wakefield, in
the County of York, 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 to improvements in shields for the water gauges of steam
and other boilers, and its object is not only to protect such glasses from break-
age, but also to prevent injury to the attendant in the case of breakage and at
the same time permits of the glass being as readily examined as at present.
According to this invention the shield may be made of any suitable material,
such as for example, say, of brass, or other metal, or of toughened glass, or the
like, or a combination of two or more of them, and it may be made of any suit-
able length, size, shape or contour in cross section, such as for instance, say,
circular, or hexagonal, or the like.
In the drawings hereunto annexed:-
Fig. 1 is a front elevation, and Fig. 2 a part sectional elevation with gauge
glass in position, of a shield constructed according to this invention.
Figs. 3 and 4 are respectively a back elevation and plan of same looking at the
top of upper support for the shield.
Figs. 5 and 6 are respectively a back elevation and a plan of same looking at
the top of the lower support for the shield.
Fig. 7a transverse section of shield on line a Fig. 1.
Like parts in all the views are marked with similar letters of reference.
The shield may be made in, say, three parts, namely, an upper support A, a
lower support B and an intermediate portion or shield proper C, and they may
be made of any of the materials named. For example, say, the whole of the
parts named may be made of brass or other metal, or the parts A and B may be of
imetal and the part C, say, of toughened glass. The top and bottom supports A
and B may be made of the same or varying lengths (varying lengths are shown
in the drawings) and when, say, in circular or ring form are of such a size as to
wholly or partially cover the gland nuts D and E of the gauge glass F, all of
which are of ordinary construction. A projecting rim G and H, or a number
of projections is or are provided respectively on the inner perimeter of the
pieces A and B at a suitable distance from their ends for supporting the said
piece B on the top of the gland nut E as shown at Fig. 2.
There is a space
between internal flange G and gland nut D to permit of piece A being raised
clear of the top of intermediate piece C whenever the latter is required to be
removed out of or placed in position. A vertical aperture or opening I and J is
also cut in the said pieces A and B of a rather wider width than the gauge glass F
to allow of the said pieces A and B being placed in position without unshipping
the gauge glass F.
The pieces A and B are respectively provided with projections or flanges K
and L through which set screws M and N are passed whereby a clip is formed
for securing them in position on the gland nuts D and E.
The intermediate piece or shield proper, hereafter termed intermediate piece C,
is made in skeleton form when, say, of metal, or toughened glass, and it is made
to fit within the pieces A and B so that its upper and lower ends, when fixed in
position will abut respectively against the internal flanges G and H on the said
pieces. That is to say, the upper end of the intermediate piece C fits within the

page_text: piece A and abuts against its internal flange G. Whilst the lower end of the
intermediate piece C fits within piece B and abuts against its internal flange H.
The intermediate piece C is provided with a longitudinal opening at the back
extending the whole of its length, and also with any desired number of longitu-
dinal slits P arranged to extend a portion of its length for inspection purposes.
But these last named slits may be dispensed with, if so desired, when made of
glass. The shield may, if so desired, be provided at each end with strengthen-
ing pieces shown in dotted lines at Fig. 7, of or about the same width (more
or less) as the distance between, say, the internal flange G and the lower edge of
piece A, and fixed thereto by any suitable means, such as, say, by rivets, cement,
or the like, and the intermediate piece C may be fixed in position by one or more
set screws provided in either the top or bottom piece or both, or by the pieces A
and B as shown.
If desired the intermediate piece may be formed by fixing (say rivetting or
soldering) longitudinal strips C, say, of metal, to the strengthening pieces Qat
suitable distances apart to form the longitudinal slits P.
By the herein described means the various parts can be applied to a gauge
glass without disturbing the same, and should the glass at any time become
broken, the shield will prevent the various portions of the glass from "flying"
or being thrown about to the injury of the attendant.
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
A shield for gauge glasses of steam and other boilers substantially as herein
described and illustrated consisting essentially of an upper and a lower support,
such as A and B, each provided with an internal flange, such as G and H, and
an intermediate slotted piece, such as C, interposed between said flanges, each of
said parts being so arranged that they can be fixed in position or withdrawn.
therefrom without disturbing the gauge glass or parts thereof, all arranged and
combined as set forth.
Dated this Fourteenth day of Anmil 1900