Improvements in or relating to Gas Checks or Taps.
Year: 1890

page_text: Date of Application, 15th Jan., 1890
Complete Specification Left, 15th Oct., 1890-Accepted, 20th Dec., 1890
PROVISIONAL SPECIFICATION.
Improvements in or relating to Gas Checks or Taps.
I WILLIAM HALL, of 14 Broad Street Corner, City of Birmingham, County of
Warwick, Electrical Engineer, do hereby declare the nature of this invention to be as
follows:-
Improvements in or relating to gas checks or taps.
My invention has reference, as hereinafter described to gas checks or taps, and
relates more particularly to what are known as pilot lights or bye-pass taps.
By my invention the aforesaid articles are much simplified in the process of their
manufacture, are more effective in their action, and the cost of their production much
reduced.
Pilot lights or bye-pass taps of ordinary construction consist of an arrangement,
whereby a small jet of gas can be left alight when the tap is nearly turned off or
closed, this result being obtained either by a small branch pipe, conducting a small
quantity of gas to or near the burner, or by a slot or undercut in the body or plug
of the tap for the same purpose.
According to my new and improved arrangement, I construct a gas check or tap
in which I extend the thumb plate, or the outer end of the plug in the form of a
cranked arm, or lever, and at a right angle to the plug.
The said cranked arm, or lever, is so arranged that when the plug be turned off in
one direction, the cranked part of the arm or lever is brought to bear against the
outer side of the body of the tap, or some portion of the pipe leading thereto or
therefrom, thus a small quantity of gas is allowed to pass through the tap to the
burner.
In turning the lever, or arm, in the opposite direction, the gas is entirely turned off,
on account of the position of the cranked part of the arm or lever, allowing the plug
to entirely cover the holes or gas passages in the body of the tap.
In applying my said invention to ordinary thumb checks or taps, I connect the
aforesaid crank, arm, or lever, to the thumb plate of the check or tap by soldering,
brazing, or riveting.
Or I may attach to the end of the crank, arm, or lever, a U or fork shape clip, and
connect to any part of the thumb plate of the tap either by a set screw or peg, or I
may make a clip in the entire length of the thumb plate, having a hook at both ends
and connect it by a set screw or peg.
Or I may attach to the end of the said crank, arm, or lever, depending fork like
arms, and connect them to the thumb plate by bending the ends of the forks in
opposite directions around the said thumb plate.
My said invention as before described, may be applied to a square end plug tap,
or to any form of plug tap by slightly modifying the form, or position, of the aforesaid
cranked arm or lever.
Dated this Fourteenth day of January 1890.

page_text: COMPLETE SPECIFICATION.
Improvements in or relating to Gas Checks or Taps.
I, WILLIAM HALL of 14, Broad Street Corner, City of Birmingham, County of
Warwick, Electrical 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 has reference as hereinafter described to gas checks or taps, and
relates more particularly to what are known as pilot light or bye-pass taps.
By my invention the aforesaid articles are much simplified in the process of their
manufacture, are more effective in their action and the cost of their production much
reduced. Pilot light or bye-pass taps of ordinary construction consist of an arrange-
ment whereby a small jet of gas can be left alight when the tap is nearly turned off
or closed, this result being obtained either by a small branch pipe conducting a small
quantity of gas to or near the burner, or by a slot or undercut in the body or plug
of the tap for the same purpose.
According to my new and improved arrangement I construct a gas check or tap, in
which I extend the thumb plate, or the outer end of the plug in the form of a
cranked arm or lever, and at a right angle to the plug. The said cranked arm
or lever is so arranged that when the plug be turned off in one direction the
cranked part of the arm or lever is brought to bear against the outer side of the body
of the tap, or some portion of the pipe, leading thereto or therefrom, thus a small
quantity of gas is allowed to pass through the tap to the burner. In turning the
lever or arm in the opposite direction, the gas is entirely turned off, on account of the
position of the cranked part of the arm or lever, allowing the plug to entirely cover
the holes or gas passages in the body of the tap.
In applying my said invention to ordinary thumb-checks or taps, I connect the
aforesaid crank, arm, or lever to the thumb-plate of the check or tap by soldering,
brazing, or riveting.
Or I may attach to the end of the crank arm, or lever a U shaped clip and connect
it to any part of the thumb plate of the tap either by a set screw or peg. Or I may
make a clip the entire length of the thumb plate having a hook at both ends, and I
connect it by a set screw or peg. Or I may attach to the end of the said crank arm,
or lever, depending fork like arms and connect them to the thumb plate, by bending
the ends of the forks in opposite directions around the said thumb plate.
My said invention, as before described, may be applied to a square end plug tap, or
to any form of plug tap by slightly modifying the form, or position of the aforesaid
cranked arm or lever.
I will now proceed to describe with reference to the accompanying drawings, the
manner in which my invention may be performed.
Figure 1 represents a side elevation, Figure 2, a plan of the under side, and
Figure 3, an end elevation of my said invention applied to the thumb plate of an
ordinary gas tap.
1
Figure 4, represents my invention detached from the thumb plate.
Figures 5, 6, 7, 8, 9, and 10, represent other methods of applying my said
invention to gas checks or taps.
The same letters of reference indicate the same parts in the several figures of the
drawing3.
a, is the thumb plate of an ordinary plug, connected to a gas tap, b is the cranked
arm or lever attached to the thumb plate a, by the U shaped clip d, shown more
plainly at Figure 3. e is a set screw or peg, for attaching the lever to the thumb
plate. is the gas pipe supplying gas to the tap.
In applying my said invention to an ordinary gas tap, as shown at Figures 1, 2,
and 3, the U shaped clip d, is placed in position on the thumb plate a, and is
fixed thereto by the set screw e.

page_text: The lever b, is cranked, and adjusted to the desired position also to bear against
the gas pipe f, and limit the supply of gas.
Figure 2, shows the manner in which the lever b, operates the plug or tap of
the gas pipe.
When the gas is turned on full, the lever is in the position shown at b, by moving
the lever to the position shown in dotted lines at 63, the gas is nearly turned off or
reduced to a small jet, the bent part of the lever b, bearing against the gas pipe f
which prevents the plug from entirely covering the holes formed in the body of
the tap, thus allowing a small quantity of gas to escape to the burner. When the
lever is turned in the opposite direction shown at 63, the gas is entirely turned off,
the bent part of the lever b, being some distance away from the gas pipe f.
Figures 5, and 6, represent an elevation and plan of the lever b attached to the
clip d made the entire length of the thumb plate, and connected thereto by the
projecting ends g, and h, and the set screw e, the lever being adjusted in the same
manner described in Figure 2.
Figures 7, and 8, represent front and end elevations of another method of attaching
the lever to a thumb plate, by soldering, brazing, or riveting the said lever to a
metallic plate.
Figure 8 having depending fork like arms i, i, which I bend around the thumb
plate a.
Figures 9, and 10 represent in side elevation and plan, respectively, my invention,
applied to a square end plug tap, in which I connect the lever b, to the plug a by
a projecting screw e on the end of the said lever, which is held in position by the
nut k, the lever is bent in the manner before described in reference to the other
arrangements.
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 :-
(1st) The combination with an ordinary gas check or tap, an extending cranked
arm or lever connected with the plug, whereby the plug may be turned nearly off
leaving a small passage for the gas to escape to the burner, substantially as herein
described and illustrated in the accompanying drawings.
(2nd) The construction of a lever for attaching to ordinary gas taps or plugs, for
the purpose herein described and illustrated in the several figures of the accompanying
drawings.
Dated this 15th day of October 1890.
RAYNER & CASSELL,
37, Chancery Lane, London, W.C., Agents for the Applicant