Improvements in Apparatus for Delivering Measured Quantities of Liquid.
Year: 1888

page_text: Date of Application, 26th June, 1888
Complete Specification Left, 8th Mar.. 1889-Accepted, 15th June, 1889
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Delivering Measured Quantities of
Liquid.
1, FRANCIS EDWARD MAC MAHON, of No. 2 Princes Mansions, Victoria Street,
Westminster, in the County of Middlesex, Engineer do hereby declare the nature of
this Invention to be as follows :—
My Invention relates to an improved device for receiving and storing the air
expelled by liquids from any chamber or receptacle and enabling such air to follow
and replace the liquids as they are withdrawn-This can be used as a substitute for
valves when applied for example to liquid measuring apparatus-It will also operate
one or more electric contacts which will be the means for registering on a counter the
value or quantity of liquid withdrawn from any suitable vessel or receptacle.
My improved device consists of an air-tight collapsible vessel or charuber made of
india-rubber or of any other suitable material and having a capacity suitable for
storing the air displaced by the liquids.
In carrying my Invention to practice I apply the said device to an opening ou
the top of a chamber or receptacle provided with a suitable neck and which is supplied
and emptied by a two-way cock-When the liquid enters the said chamber or
receptacle it expels the air which having no other exit escapes into the air-tight
collapsible vessel or chamber-The expansion of the said collapsible chamber is
regulated by an adjustable piston working within a cylinder.
"When it is required to register the value or quantity of liquid supplied I arrange
the collapsible vessel or chamber to operate a slide, which slide makes one or more
electric contacts, such contact being thus the means of registering upon a counter the
value or quantity desired.
HUGHES, ELI & HUGHES,
76, Chancery Lane, London, W.C., Agents for the Applicant.
COMPLETE
SPECIFICATION.
Improvements in Apparatus for Delivering Measured Quantities of
Liquid.
I, FRANCIS EDWARD MAC MAHON, of No. 2, Prince's Mansions, Victoria Street
Westminster, in the County of Middlesex, 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 :-
My Invention relates to an improved device for receiving and storing the air
expelled by liquids from any chamber or receptacle and enabling such air to follow
and replace the liquids as they are withdrawn.
My improved device consists of an air tight collapsible vessel or chamber made of
india rubber or any other suitable material and having a capacity suitable for storing
the air displaced by the liquids or fluids.
In carrying my Invention into practice I apply the said device to an opening on
the top of a chamber or receptacle provided with a suitable neck and which is supplied
and emptied by a two-way cock. When the liquid enters the said chamber or
receptacle it expels the air which having no other exit escapes into the air tight
collapsible vessel or chamber. The expansion of the said collapsible chamber is
regulated by an adjustable piston working within a cylinder.
When it is required to register the value or quantity of liquid supplied, I arrange
the collapsible vessel or chamber to operate a slide which makes one or more electric

page_text: contacts, such contact being thus the means of registering upon a counter the value or
quantity desired.
DESCRIPTION OF THE DRAWINGS.
Figure 1 is a front elevation and Figure 2 a vertical section of an apparatus
constructed according to my invention.
a is the chamber which is made of glass. is the india rubber collapsible
vassol. e is a twoway cock for admitting liquid into and drawing it off from the
chamber a.
d is a piston which regulates the expansion of the vessel b and e is
the cylinder in which it works. is a spring pressing down the piston, this however
may be omitted as also may the piston and cylinder in enses where the vessel bis
sufficiently olastic or a weight may be substituted.
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 :-
--
1. The combination of a chamber, a two-way cock for admitting liquid into and
drawing it off from the chamber and an airtight collapsible vessel for receiving the air
from the chamber substantially as described."
2. Apparatus for delivering measured quantities of liquid substantially as described
and shown in the drawings.
DL: OIL
1