Improvements in Locks for Miners' Safety Lamps
Year: 1896

page_text: JOSEPHUS MOORE, Winding Engineman 15 South Street Ynishir, Porth,
Rhondda Valley, Glamorganshire do hereby declare the nature of this invention.
to be as follows:-
The lock is made of brass or gunmetal, and is attached to the case of an ordinary
miners safety lamp.
It consists of a jacketed shell marked A in drawing.
In this shell there is a cylinder marked D in drawing.
The shell is curved to the same circle as the case of a miners safety lamp, and
can be attached to it by soldering or small screws.
B is the piston which traverses through cylinder D and is pressed into "shut,"
or closed by spring C which is coiled to the cylinder circle.
E is the air passage which leads into cylinder from hole in shell at H.
F is a small projection which is fast to piston B but projects under the shell A
and into a small hole in the "pot" of a miners safety lamp, and thereby "locking
it."
G is an ordinary cylinder of a small hand air pump, which is attached by the
mouth piece and pipe K. M. to the mouth of air passage at H.
The air pump lifts the small piston upwards, and the spring keeps it closed.
I is the leather piston ring, which is actuated by pulling handle J.
Dated this 23rd day of September 1896.
JOSEPHUS MOORE.
Improvements in Locks for Miners' Safety Lamps.
JOSEPHUS MOORE, Winding Engineman 15 South Street Ynishir, Porth,
Rhondda Valley, Glamorganshire do hereby declare the nature of this invention
5 and in what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement:-
The drawing referred to is that filed with my Provisional Specification.
The Lock is made of brass, or any metal, and is attached to an ordinary miners
Safety Lamp. It consists of a shell marked A in drawing in which there is a
cylinder marked D in drawing, the shell A is curved to the same circle as a
miners Safety Lamp on the inner side. B is the piston which is in cylinder.
O is a spring on upper end of piston. E. is an air passage which leads into
cylinder and out to side at H. F is a small tongue which is in one with the
.

page_text: piston but projects under the shell, and into an annular space in the oil pot of
the Lamp, and prevents the Lamp being opened. G is an ordinary air pump
which exhaust the air from from the cylinder D, through passage E and out through
hole at H, thereby lifting the projecting piece F out of its hole, and opening the
lock.
In simple words, the air is exhausted from behind a small piston, which forms
the lock bolt" and the lock can then be opened. To shut the lock the "air
pump" is withdrawn from the aperture H, the atmospheric pressure along with
the spring presses it down and locks it.
The apparatus acts in the same way to whatever article it is attached viz. by
exhausting the air behind the the piston bolt.
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:
First. The improvements in miners, Safety Lamp locks, substantially as herein
set forth and shown in Figure 1 to 5 of the aforementioned drawing.
Second. In miners Safety lamp locks the inner chamber E,
Piston B&F in Figure 2, together with the Special passage H in Figure 1, to
fix suction pump to exhaust air from chamber E Figure 2.
Dated this 18th September 1897.
Spring C,
JOSEPHUS MOORE,
Applicant.