Improvements in Fluid Pressure Recorders.
Year: 1899

page_text: Date of Application, 26th Oct., 1899
Complete Specification Left, 26th July, 1900 -Accepted, 1st Sept., 1900
PROVIDIUNAL SPECIFICATION.
Improvements in Fluid Pressure Recorders.
ISAAC SMITH and WILLIAM SMITH, of the Firm of Sydney Smith and Sons,
of Basford Brass Works, Nottingham, Brass Founders, do hereby declare the
nature of this invention to be as follows:-
1
This invention relates to improvements in recorders for automatically register-
ing variations in the pressure of steam, water or other fluids, and recording the
times at which such variations occur, the object of the invention being the pro-
duction of a recorder, simple in construction, reliable and efficient in its action,
and without corrugated tubes or other delicate parts likely to get out of order.
According to this invention the registering finger is connected by links or
other connections to one end of a Bourdon pressure gauge tube, the other end
of which is in communication with the fluid whose pressure it is desired to
record. The free end of the registering finger is provided with a pencil or other
marker and is arranged to sweep across a dial sheet which is suitably mounted
and is rotated by clock mechanism, the said dial sheet being marked with
lines which indicate pressures and times.
Teled
0541
1
e
1
1000
W. H. POTTER,
Patent Agent, Brougham Chambers, Nottingham.
ISAAC SMITH and WILLIAM SMITH, of the Firm of Sydney Smith and Sons,
of Basford Brass Works, Nottingham, Brass Founders, 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 recorders for automatically register-
ing variations in the pressure of steam, water or other fluids, and recording the
times of which such variations occur, the object of the invention being the pro-
duction of a recorder simple in construction, reliable and efficient in its action,
and without corrugated tubes or other delicate parts likely to get out of order.
According to this invention the registering finger is connected by links or
other connections to one end of a Bourdon pressure gauge tube, the other end
of which is in communication with the fluid whose pressure it is desired to
record. The free end of the registering finger is provided with a pencil or other
marker and is arranged to sweep across a dial sheet which is suitably mounted
[Price 8di

page_text: and is rotated by clock mechanism, the said dial sheet being marked with
lines which indicate pressures and times.
In the drawings which are attached hereto there is shown in elevation an
arrangement of a pressure recorder as designed for attaching to a steam boiler.
The syphon pipe from the boiler is connected to the socket a which communicates
with the Bourdon tube b the end e of which is connected to a lever e on the
axle f by a link d, this part of the recorder being constructed and arranged
similarly to an ordinary pressure gauge. The axle f is fitted to turn in suit-
able bearings and carries an arm or pointer g, the upper end of which carries a
pencil h, or is provided with ink or other means for marking the dial sheet k.
The dial, carrying the slicet k, is mounted upon the axle m of clock mechanism
placed behind the same upon the frame to which the other parts of the
recorder are attached. The dial sheet which is usually of paper, is printed with
a number of circles which are numbered according to the pressures to be recorded
and there are also a number of radial curves having a radius equal to the length
of the arm g and arranged to divide the sheet, preferably, into twelve or twenty
four parts according to the arrangement of the clock driving the same.
The recorder is enclosed in a suitable case with a glass face.
Instead of the recording sheet being in the form of a dise, it may be in the
form of a ribbon or tape, and the clock mechanism may be arranged to actuate
such ribbon by friction rollers or the like, so as to give it equal motions in equal
times.
The improved recorded may be applied to steam boilers, water mains, gaso-
meters and be used for other similar purposes.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what
we claim is: -
A fluid pressure recorder constructed, arranged and operating as herein de-
scribed with reference to the accompanying drawings and for the purpose
specified.
Dated this 25th de
T.... 1000
W. H. POTTER,
Patent Agent, Brougham Chambers, Nottingham.