An Automatic Recording Pyrometer.
Year: 1893

page_text: Date of Application, 13th Dec., 1893
Complete Specification Left, 12th Sept., 1894-Accepted, 1st Dec., 1894
PROVISIONAL SPECIFICATION.
An Automatic Recording Pyrometer.
I, WALTER
CROOKE Junior of The North Lincolnshire Iron Works
Frodingham in the County of Lincolnshire, Iron-works Manager do hereby
declare the nature of this invention to be as follows :--
My invention has for its object improvements in the construction of a continuous
automatic record of temperatures of air, gas, steam, water &c. &c.
I make a cylinder or vessel containing dessicated air or gas (hereinafter referred
to as air &c.) connected by means of a capillary tube of suitable material to a
hollow diaphram, piston, or bent tube (hereinafter referred to as diaphram &c.)
which by the increase or decrease of pressure caused by the expansion or contraction
of the air &c. in the before mentioned cylinder causes the movement of the
diaphram &c. which in its turn actuates an arm or lever at the end of which is
secured a pen, pencil, or other marking point which pen &c. marks the rise and fall
of the diaphram &c. on a paper secured to a drum moved by clockwork.
In order to record the temperature of any air gas or water &c. I insert the above
mentioned cylinder into the chamber oven furnace or flue which contains the air
gas &c. to be tested, the air &c. in the cylinder expands or contracts with any
increase or decrease of temperature and causes the air &c. contained in the cylinder
to flow through the capillary tube and operate upon the diaphram &c. which again
in its turn moves the arm holding the pen &c. upon the prepared paper surrounding
the drum moved by clockwork and thus a continuous record of the temperature to
which the outside of the cylinder is exposed is obtained.
Dated this 9th day of December 1893.
WALTER CROOKE, Jr.
COMPLETE SPECIFICATION.
An Automatic Recording Pyrometer.
1, WALTER CROOKE Junior of North Lincoln Iron Works Frodingham in the
County of Lincolnshire Iron Works Manager 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 has for its object improvements in the construction of continuous
automatic recording pyrometers giving a continuous automatic record of temperatures
of air, gas, steam, water &c. &c.
I make a cylinder or vessel containing dessicated air or gas (hereinafter referred
to as air &c.) connected by means of a capillary tube of suitable material to a
diaphram piston or bent tube (hereinafter referred to as diaphram &c.) which by
the increase of degrees of pressure caused by the expansion or contraction of the
air &c. in the before mentioned cylinder causes the movement of the diaphram &c.
which in turn actuates an arm or lever at the end of which is secured a pen pencil
or other marking point which pen &c. marks the rise and fall of the diaphram &c.
on a paper secured to the drum moved by clockwork.
In order to record the temperature of any air, gas, water &c. I insert the above
mentioned cylinder into the chamber oven, furnace or flues which contain the air,
gas, &c. &c. to be tested. The air &c. in the cylinder expands or contracts with
any increase or decrease of temperature and causes the air &c. contained in the

page_text: cylinder to flow through the capillary tube and operate upon the diaphram &c.
which again in its turn moves the arm holding the pen &c. upon the prepared paper
cylinder or drum moved by clockwork and thus a continuous record of the
temperature to which the outside of the cylinder is exposed is obtained.
In order that the nature of the invention may be more clearly understood in
Sheet II show a cylinder or cylinders A, A, inserted in a chamber or chambers B, B,
containing the air or gas to be tested, to which cylinder or cylinders A A is attached
a capillary tube or tubes C, C, which convey the air &c. to a diaphram or
diaphrams D, D, which actuate a lever or levers E E moving a pencil or
pencils F. F. upon a drum G turned by clockwork.
The rise & fall of the pencils F. F. is in proportion to the rise & fall of the
temperatures of the air or gas in the chambers B. B. and this in combination with
the drum G makes a continuous record of the temperature of the air or gas in the
chambers B. B.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I hereby declare that
I do not claim as new the expansion of air in a cylinder &c. or the movement of
a lever as in the case of the aneroid barometer but what I do claim is
The construction of a combination of cylinder inserted in the air or gas to be
tested, connected by means of a capillary tube to a diaphram piston or bent tube
and drum substantially as described in the above Specification and shown in the
accompanying drawing.
In witness whereof I, the said Walter Crooke, Junior, have hereunto set my
hand, dated this Eleventh day of September 1894.
WALTER CROOKE, Jв.