A Sight-glass or Gauge-tube for the Syrup Feed-pipe of Soda-water Bottling Machines and like purposes.
Year: 1892

page_text: Date of Application, 28th Jan., 1892-Accepted, 5th Mar., 1892
COMPLETE SPECIFICATION.
A Sight-glass or Gauge-tube for the Syrup Feed-pipe of Soda-water
Bottling Machines and like purposes.
1, HENRY JAMES ROLES BOWRING of Lower Bond Street Weymouth in the
County of Dorset, Soda Water Manufacturer, 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 is designed to shew the attendants or bystanders of a sodawater
bottling machine, whether the syrup is being properly fed into the bottles as they
are being filled by the machine.
Under present arrangements only the man who is bottling can tell whether the
pump of the syrup feed is doing its work properly, and if he fails to take notice
in time many bottles are filled with soda-water only, which sometimes causes much
inconvenience.
My invention consists in placing in some conspicuous position, intermediately
between the syrup-pan and the bottling machine, a glass syphon or sight-feed tube
by means of which the action of each stroke of the pump can be easily seen and
which will at once make manifest to anyone passing by or standing near, that the
supply of syrup is exhausted.
The syphon or sight-tube must be constructed wholly or in part of glass, so that
the syrup within it is plainly visible and may be made in various sizes and shapes,
so long as the principle of a column of syrup rising and falling in a glass tube
closed at its upper end, is not departed from, the rise and fall being caused by the
stroke of the pump.
I will now describe a serviceable and convenient form of my sight-glass as shown
in the accompanying drawing, in which it will be seen that it is composed of an
outer glass tube a, forming an annular space around the inner tube . The lower
part of the annular space receives the end of the tube, coming from the feed
tube k, so that the syrup can pass from the feed tube into a, and rise so far as the
aircushion above it will allow.
In the drawing, the upper part of the fittings of my sight glass, is shown in
section, and it will be seen that there is a small thumb screw c, by means of which
some of the air in the annular space can be allowed to escape, whereby the syrup
is allowed to rise to about the middle of the outer tube. This being so arranged the
syrup in the annular space will rise and fall with every stroke of the pump, and
when the syrup in the pan is exhausted will entirely disappear.
The construction of the sight-glass set forth in the drawing is as follows:-
a, is the outer glass tube. b, is the inner tube. e, is the regulating screw. d, is
a lug for screwing the apparatus to a board. e, and, are metal caps which screw
up the fitting together. e, acts on the shouldered metal piece y, which like,
screws on to and connects with the body piece h. i, is an india-rubber washer
holding the glass tube a. k, is the inlet supply pipe of the syrup. I, is the outlet
pipe leading to the bottling machine. m, is a washer connecting the tube b, with
the collar n, attached to k.
The lower fitting at the lower end of the glass tube a, is similar to that shewn in
section above, except that it has no screw e
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is
In a feed-pipe for supplying syrup or other liquid to a bottling machine, or for

page_text: like purposes, a glass sight-tube whereby the action of the pump, and the exhaustion
of the liquid is readily seen as it occurs.
Dated this 28th day of January 1892.
S. S. BROMHEAD,
97, Newgate Street, London, E.C., Agent for Applicant.