IMPROVEMENTS IN MINERS SAFETY LAMPS to be as follows:-
Year: 1885

page_text: I, WILLIAM MORGAN of Pontypridd in the County of Glamorgan Engineer do
hereby declare the nature of my invention for "IMPROVEMENTS IN MINERS
SAFETY LAMPS to be as follows:-
"
My Invention relates first to improvements in miners safety lamps of the
character described in the specifications of Letters Patent granted to me and
dated 12th June 1882 N° 2750 and 12th December 1882 N° 5925 and also in the
Provisional Specification of Letters Patent now being applied for by me and
dated 27th September 1884 N° 12874 and the object of the first part of my.
improvements is to obtain more perfect combustion and consequent efficiency of
light by arranging the tubular wire gauze screens through which air is admitted
to support combustion in combination with the method of mounting a central tube
so as to carry off the products of combustion direct from the flame of the lamp.
For this purpose a central tube is supported just above the flame of the lamp by
means of a wire gauze cone or other material or connection attached to it. The
upper end of the cone or other connection is formed with a flange which is secured
to the upper end of the innermost wire gauze (also formed with a flange) by
means of a wire gauze cap which is placed over the two flanges the circular edge
of the cap being then closed in under the two flanges the central tube and the wire
gauze being thus secured together.
The carbonic acid gas and products of combustion being carried away by the
central tube are thus prevented from mixing with the atmospheric air as it enters
the lamp and a more brilliant light is by this means obtained.
When the wire gauze cap over the central tube is destroyed by the effect of the
gas upon it it can be easily removed and a new one substituted for it without
destroying the tube and cone of wire gauze.
Another part of my improvements in miners safety lamps relates to the construc-
tion and action of the locks so as to simplify and expedite the locking of the lamps
at the same time making it impossible for the miner to open the lamp and obtain
a light without being detected.
For this purpose projections are formed or applied to the lamp which come
opposite to or over each other when the two parts of the lamp are screwed or
connected together. A passage is formed through one of the projections and,
partly through the other for the reception of a pin or locking bolt (advantageously

page_text: of lead) or other suitable material. The pin or bolt is formed with a slot recess or
set off into or under which a spring fixed in the passage enters and prevents the
pin or bolt from being withdrawn which thus locks or secures the two parts of the
lamp together. A space is left between the two projections so that the pin or bolt
may be readily cut through to unlock the lamp when required.
This method of locking may be applied to other parts of a miners lamp if
desired.
I WILLIAM MORGAN of Pontypridd in the County of Glamorgan 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 first to improvements in miners safety lamps of the
character described in the Specifications of Letters Patent granted to me and
dated 12th June 1882 N° 2750 and 12th December 1882 N° 5925 and also in the
Provisional Specification of Letters Patent now being applied for by me and
dated 27th September 1884 N° 12874 and the object of the first part of my
improvements is to obtain more perfect combustion and consequent efficiency of
light by arranging the tubular wire gauze screens through which air is admitted
to support combustion in combination with the method of mounting a central tube
so as to carry off the products of combustion direct from the flame of the lamp.
For this purpose a central tube is supported just above the flame of the lamp by
means of a wire gauze cone or other material or connection attached to it. The
upper end of the cone or other connection is formed with a flange which is secured
to the upper end of the innermost wire gauze (also formed with a flange) by
means of a wire gauze cap which is placed over the two flanges the circular edge
of the cap being then closed in under the two flanges the central tube and the wire
gauze being thus secured together.
The carbonic acid gas and products of combustion being carried by the central
tube are thus prevented from mixing with the atmospheric air as it enters the
lamp and a more brilliant light is by this means obtained.
When the wire gauze cap over the central tube is destroyed by the effect of the
gas upon it it can be easily removed and a new one substituted for it without
destroying the tube and cone of wire gauze.

page_text: Another part of my improvements in miners safety lamps relates to the construc-
tion and action of the locks so as to simplify and expedite the locking of the lamps
at the same time making it impossible for the miner to open the lamp and obtain
a light without being detected.
For this purpose projections are formed or applied to the lamp which come
opposite to or over each other when the two parts of the lamp are screwed or
connected together. A passage is formed through one of the projections and partly
through the other for the reception of a pin or locking bolt (advantageously of
lead) or other suitable material. The pin or bolt is formed with a slot recess or set
off into or under which a spring fixed in the passage enters and prevents the pin
or bolt from being withdrawn which thus locks or secures the two parts of the
lamp together. A space is left between the two projections so that the pin or bolt
may be readily cut through to unlock the lamp when required.
This method of locking may be applied to other parts of a miners lamp if
desired.
And in order that my said invention may be most fully understood and readily
carried into practice I will proceed to describe the drawings hereunto annexed.
The first part of my improvements in order to obtain more perfect combustion
and efficiency of light in miners lamps is represented by Figures 1, 2, 3, 4, 5 and 6
of the drawings hereto annexed.
According to this part of my improvements I arrange the tubular wire gauze
screens through which air is admitted to support combustion in combination with
the method of mounting the central tube e so as to carry off the products of
combustion direct from the flame of the lamp.
The central tube e is supported just above the flame of the lamp by means of
the wire gauze cone e¹ (or other suitable material or connection) attached to it.
The upper end of the cone e¹ (or other connection) is formed with a flange which
is secured to the upper end of the innermost wire gauze ex (also formed with a
flange) by means of a wire gauze cap e² which is placed over the two flanges the
circular edge of the cap e³ being then closed in under the two flanges by which
means the central tube e and the wire gauze e* are thus secured together.
The carbonic acid gas and products of combustion being carried away by the
central tube e are thus prevented from mixing with the atmospheric air as it enters
the lamp and a more brilliant light is by this means obtained.
When the wire gauze cap e' over the central tube is destroyed by the effect of
the gas upon it, it can be easily removed and a new one substituted for it without
destroying the tube c and cone e¹ of wire gauze.
Figure 7 shows the wire gauze cone e¹ arranged within the central tube e conical
gauze surfaces e** being arranged in combination with the gauze cone e* to increase
the surfaces of the gauze screens and thus afford increased protection from the risk
of explosion.
Another part of my improvements in miners lamps relates to the improved
construction and action of the locks so as to simplify and expedite the locking of
the lamps at the same time making it impossible for the miner to open his lamp
and obtain a light without being detected.
Figures 8, 9, 10, 11, 12 and 13 show several views of the oil box of a miners
lamp where the parts are screwed together having this part of my improvements
applied thereto. For this purpose projections j and j¹ are forined one on the lamp
and the other on the oil box which come opposite to or over each other when the
two parts of the lamp are screwed or connected together.
A passage is formed through the projection and partly through the projection;
for the reception of the pin or locking bolt % (advantageously made of lead) or
other suitable material.
The pin or bolt k is formed with a slot recess shoulder or set off k³ into or under
which a spring fixed in the passage through the projection 1 enters and prevents
the pin or bolt k from being withdrawn after it has been inserted, to lock and

page_text: secure the two parts of the lamp together. The method of arranging and applying
the retaining spring may be varied.
A space is left between the two projections j and j' so that the pin or bolt k may
be readily cut through to unlock the lamp when required.
This improved method of locking may be applied to other parts of a miners
lamp if desired.
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* I claim the arrangement and application of the tube e cone e¹ cap e² and
cone ex arranged to act substantially in the manner and for the purpose herein
described and represented in Figures 1, 2, 3, 4, 5 and 6 of the drawings annexed.
I also claim the improved form and arrangement of the wire gauze screens
represented by Figure 7 of the drawings.
2nd I claim the improved arrangement and construction of locks for securing the
parts of a miners lamp together (to prevent the miner from opening his lamp
without being detected) by means of a pin or bolt / held in position and arranged
to act substantially in the manner and for the purpose herein described and
represented in Figures 8, 9, 10, 11, 12 and 13 of the drawings annexed.