Improvements in Miners' Safety Lamps.
Year: 1892

page_text: Date of Application, 18th June, 1892
Complete Specification Left, 18th Mar., 1893-Accepted, 20th May, 1893
PROVISIONAL SPECIFICATION.
Improvements in Miners' Safety Lamps.
1, THOMAS MORRIS, of 21 Wood Lane, West Bromwich, in the County of
Stafford, Miner, do hereby declare the nature of my said invention to be as
follows:
My invention has for its object improvements in miners safety lamps by which I
render such lamps more secure and so that the fire damp cannot by any means
reach the light and no amount of draught however strong can affect the light.
In carrying my invention into effect I form the metal base or vessel of the lamp
to screw into the underside of the frame carrying the glass and through this
frame I form a series of holes or perforations which are carried into a circular
chamber around the joint and then through the rim of the vessel passing into a
saucer shaped base which is formed over the oil vessel the burner being in the
centre. Over this saucer shaped space and around the burner I put a gauze
covering forming it into an air chamber which is supplied by air from the outside
and from this chamber the air passes up through the gauze covering and thus
supplies the necessary air for combustion. At the top of the lamp I form the
aperture in the ordinary way above the gauze guard but in addition I form a
pivotted guard which upon being turned upon its pivot closes the aperture and
this prevents the passage of air and consequently extinguishes the light.
Dated this 17th day of June 1892
GEORGE BARKER,
77, Colmore Row, Birmingham, Agent.
COMPLETE SPECIFICATION.
Improvements in Miners' Safety Lamps.
I, THOMAS MORRIS, of 21 Wood Lane, West Bromwich, in the County of
Stafford, Miner, do hereby declare the nature of my said 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 miners safety lamps by which I
render such lamps more secure and so that the fire damp cannot by any means
reach the light and no amount of draught however strong can affect the light.
In carrying my invention into effect 1 form the metal base or vessel of the lamp
to screw into the underside of the frame carrying the glass and through this frame
1 form a series of holes or perforations which are carried into a circular chamber
around the joint and then through the rim of the vessel passing into a saucer shaped
base which is formed over the oil vessel the burner being in the centre. Over this
saucer shaped space and around the burner I put a gauze covering forming it into
an air chamber which is supplied by air from the outside and from this chamber
the air passes up through the gauze covering and thus supplies the necessary air
for combustion. At the top of the lamp I form the aperture in the ordinary way
above the gauze guard but in addition I form a pivotted guard which, upon being
turned upon its pivot closes the aperture and this prevents the passage of air and
consequently extinguishes the light.
In order that my invention may be clearly understood and more easily carried
into practice I have appended hereunto a double sized sheet of drawings upon
which I have fully illustrated the nature of my said improvements.

page_text: Figure 1., is a view of the lamp complete.
Figure 2., is a vertical section through the base of the lamp.
Figure 3., is a sectional plan of Figure 1 and 2.
Figure 4., is a vertical section through the top part of the lamp.
Figure 5., is a sectional plan of Figure 4.
In carrying out my invention the metal base B is made to screw into the under-
side of the main frame A of the lamp. A series of perforations or holes a¹ are
formed through the bottom a² of the frame into the chamber a³ which runs around
the base of the lamp and is formed between the top part a² and the base B. From
this chamber as a series of holes or perforations are formed so as to convey the
air into the cup 2 from which it passes into the main part of the lamp through the
gauze cap E which is made to fit around the burner and is secured in position by
the screw stopper el in which the burner F is mounted. In this way sufficient air
is conveyed to the burner for combustion but provision is made for regulating the
quantity of air passing through the lamp by means of the guard H which is
mounted to turn on the top a' of the lamp in which the air exits a and a are formed
so that by turning the band until its flat part and ² more or less covers the exits
even to closing them all together which stops the air for combustion and thus
extinguishes the lamp. To prevent any entrance of fire damp at these exits the
gauze case K is provided within the frame and for gaining all the possible light the
top part of the frame is provided with apertures M which have an internal glass N
which is protected from the heat by the internal gauze K an outer casing being
mounted to turn so that in case of the glass becoming broken the apertures M may.
be covered. The base is locked to the main frame by a set screw which is operated
-by a key.
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 :-
In a miners' safety lamp the means for and mode of couveying the air into the
lamp in combination with the means for regulating the quantity passing through,
substantially as herein set forth and shown upon the accompanying drawings.
Dated this 17th day of March 1893.
GEORGE BARKER,
77, Colmore Row, Birmingham, Agent for Applicant.
GEORGE BARKER,
77, Colmore Row, Birmingham, Agent for Applicant.