IMPROVEMENTS IN INDICATING REGULATOR COCKS AND VALVES
Year: 1878

page_text: LETTERS PATENT to Alfred Adams, of Narborough, and Thomas Coltman, of
the Town of Leicester, both in the County of Leicester, for the Invention
of "IMPROVEMENTS IN INDICATING REGULATOR COCKS AND VALVES."
Sealed the 13th September 1878. and dated the 30th March 1878
PROVISIONAL SPECIFICATION left by the said Alfred Adams and Thomas
Coltman at the Office of the Commissioners of Patents on the 30th March
1878.
ALFRED ADAMS, of Narborough, and THOMAS COLTMAN, of the Town of Leicester,
both in the County of Leicester. "IMPROVEMENTS IN INDICATING REGULATOR
COCKS AND VALVES."
We employ several modifications, one of which consists of a double-barreled
chamber; each chamber is bored out conically to receive a plug constructed as
follows: Each plug is of such diameter as to allow of its being bored out a portion of
its length longitudinally; its outer periphery has a V shaped groove cut in it com-
mencing at a point and gradually increasing in width until equal to the inlet orifice
in the barrel at its side, this groove communicates with the longitudinal bore,
which communicates with an outlet; the stem of each plug carries a toothed wheel,
which may gear into each other, or into an intermediate wheel.
A second modification consists of a barrel provided with two inlets and one
outlet; the barrel is bored out to receive a hollow plug having two wedge-shaped
openings on its periphery, reversely placed, and communicating with the outlet
through the hollow plug; the widest portion of each wedge-shaped opening is of
equal width with the diameter of the inlet. Each cock is provided with an indicating
scale to shew the temperature or the relative proportions of the fluids passing
through.
Other modifications consist of combinations of the above-described parts.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Alfred Adams and Thomas Coltman in the Great Seal Patent Office
on the 24th September 1878.
ALFRED ADAMS, of Narborough, and THOMAS COLTMAN, of the Town of Leicester,
both in the County of Leicester. "IMPROVEMENTS IN INDICATING REGULATOR
COCKS AND VALVES."
We employ several modifications, one of which consists of a double-barreled
chauber; cach chamber is bored out conically to receive a plug constructed as
follows: Each plug is of such diameter as to allow of its being bored out a portion
of its length longitudinally; its outer periphery has a V shaped groove cut in it, 1
commencing at a point, and gradually increasing in width until equal to the inlet
orifice in the barrel at its side; this groove communicates with the longitudinal
bore, which communicates with an outlet; the stem of each plug carries a toothed
wheel, which may gear into each other, or into an intermediate wheel.
A second modification consists of a barrel provided with two inlets and one 1
outlet, the barrel is bored out to receive a hollow plug, having two wedge-shaped
openings on its periphery, reversely placed and communicating with the outlet
through the hollow plug; the widest portion of each wedge-shaped opening is of
equal width with the diameter of the inlet. Each cock is provided with an indi-
cating scale to shew the temperature or the relative proportions of the fluids passing 2
through.
Othen modifications nonint of ans
Figure 1 is an outer view of one of our improved indicating regulator cocks ; Figure
2 is a side view of the same.
Figure 3, a plan of the upper flange of the barrel.
Figure 4 shews a side view of the hollow plug, and the barrel and indicating plate
in section.
Figure 5 is a view of the periphery of the plug spread out to shew the two wedge-
shaped openings.
The corresponding parts in each Figure are lettered alike.
Our improved indicating regulator cock consists of a barrel A provided with
two inlets A1, A2, and one outlet A³, the barrel is bored out to receive a hollow
plug B, having two wedge-shaped openings B1, B2, reversely placed, and communi-
cating with the outlet B³ through the bottom of the hollow plug'; the widest portion
of each wedge-shaped opening is of equal-width to the inlet.
Each cock may be provided with an indicating scale, in addition to the lettering
on the outside of the cap C, so as to shew the temperature or the relative proportions
of the fluids passed through the inlets.
The cap C has a flange on its lower side, which forms a recess to receive a
suitable packing, which is pressed down upon the bevelled shoulder of the hollow
plug by means of three (or more screws) shown at Figures 1 and 2, thus keeping the
hollow plug in position and forming a tight joint, the stem of the plug is round and
fits a central hole in the cap, above which the stem forms a square to receive a hand
lever D held thereon by a screw and terminating in an indicating pointer.
inlets and outlet are each screwed on the outside so as to be readily connected
where required.
The
Having now described the nature of our said Invention, and the manner of per-

page_text: forming the same, we declare that we claim for an indicating regulator cock sub-
stantially as herein-before described, and illustrated in the accompanying
Drawings.
In witness whereof, we, the said Alfred Adams and Thomas Coltman, have
hereunto set our hands and seals, this
day of September, in
the year of our Lord One thousand eight hundred and seventy-eight.
Witness,
H. W. GOUGH, C.E.,
Nottingham.
(L.S.)
ALFRED ADAMS.
THOMAS COLTMAN. (L.S.)