Improvements in or connected with Miners Safety Lamps."
Year: 1897

page_text: Date of Application, 16th Feb., 1897
Complete Specification Left, 11th Nov., 1897-Accepted, 11th Dec.,
1897
66
PROVISIONAL SPECIFICATION.
Improvements in or connected with Miners Safety Lamps."
We, WILLIAM ACKROYD, of The Crescent, Ripon, Colliery Proprietor, and
WILLIAM BEST, of Morley, near Leeds, Engineer, both in the County of York, do
hereby declare the nature of this invention to be as follows:
Much difficulty and annoyance has hitherto been caused with miners safety lamps,
owing to the pricker projecting below the base of the lamp, thus rendering the
wick liable to be moved accidentally on placing the lamp on the ground, by reason,
of the pricker being forced upward by its contact with the floor. The possibility
of raising the wick to such an extent that its base is raised away from the lamp
bottom, has also been a great disadvantage, as the lamp can be trimmed and the
wick raised, until the latter is of too short an extent to touch the base of the lamp
vessel, when the flame will burn freely for a short time and then extinguish in
spite of the presence of a good supply of oil.
The object of our invention is to arrange and construct the prickers and wicks
of miners lamps, in such a manner that the said wicks cannot be moved acci-
dentally by the pricker, and when the wick is consumed to a certain degree it
cannot be raised any further by means of the pricker.
According to our invention, we form a slot in the wick tube for the pricker to
enter and engage with the wick, and the pricker is so constructed that it can move
a short distance above the termination of the slot. A. spring is provided on the
pricker, for the purpose of keeping it in an upward position, and when the pricker
is in its most upward position its point rests opposite the wick tube above the slot.
The wick is formed with a slot in same, which comes in front of the slot in the
wick tube, before it has been sufficiently consumed to leave the base of the oil
reservoir.
In order to regulate the height of the wick, the pricker is pulled down against
its spring and actuated in the ordinary way, and when the required alteration has
been effected, the pricker is let go and the spring carries it up and holds it away
from contact with the wick. This regulation of the wick can be effected, until
the slot in the said wick comes in front of the wick tube, when the pricker having
no portion of the wick to engage with, the upward movement is stopped and the
end of the wick is prevented from being raised above the base of the oil reservoir.
Dated ibis 15th Day of February A.D.. 1897.
BREWER & SON
London and Leeds. Agents for the Applicants.
" Improvements in or connected with Miners Safety Lamps."
We, WILLIAM ACKROYD, of The Crescent, Ripon, Colliery Proprietor, and
WILLIAM BEST, of Morley, near Leeds, Engineer, both in the County of York, do
[Price Sd.1

page_text: hereby declare the nature of this invention and in what manner the same is to
be performed, to be particulary described and ascertained in and by the following
statement:-
Much difficulty and annoyance has hitherto been caused with miners safety
lamps, owing to the pricker projecting below the base of the lamp, thus rendering
the wick liable to be moved accidently on placing the lamp on the ground, by reason
of the pricker being forced upward by its conact with the floor.
of raising the wick to such an extent that its base is raised away from the lamp
The possibility
bottom, has also been a great disadvantage, as the lamp can be trimmed and the
wick raised, until the latter is of too short an extent to touch the base of the lamp
vessel, when the flame will burn freely for a short time and then extinguish in
spite of the presence of a good supply of oil.
The object of our invention is to arrange and construct the prickers and wicks
of miners lamps, in such a manner that the said wicks cannot be moved acci-
dentally by the pricker, and when the wick is consumed to a certain degree it
cannot be raised any further by means of the pricker.
In order that our invention may be clearly understood, we will proceed to
describe same with reference to the accompanying drawing, in which Figure 1
is a side section, Figure 2 a cross section, and Figure 3 a detail view, of our inven-
tion as applied to a miners safety lamp.
According to our invention, we form a slot A in the wick tube B for the pricker
C to enter and engage with the wick 1), and the pricker C is so constructed that it
can move a short distance above the termination of the slot A.
provided on the pricker C, for the purpose of keeping it in an upward position,
A spring E is
and when the pricker C is in its most upward position its point rests opposite the
wick tube B above the slot A, as seen at Figure 1. The wick D is formed with a
slot G in same, which comes in front of the slot A, before it has been sufficiently
consumed to leave the base of the oil reservoir H.
In order to regulate the height of the wick D, the pricker C is pulled down
against the spring E and actuated in the ordinary way, and when the required
alteration has been effected, the pricker C is let go and the spring E carries it up
and holds it away from contact with the wick D, thus preventing the wick being
moved accidentally. This regulation of the wick can be effected until the slot
comes in front of the slot A, when the pricker C having no portion of the wick to
engage with, the upward movement is stopped and the end of the wick is pre-
vented from being raised above the base of the oil reservoir H.
Having now particularly described and ascertained the nature of our said in-
vention, and in what manner the same is to be performed, we declare that what
we claim is:-
1. The pricker C having a spring E on same, substantially as and for the pur-
poses set forth.
2. The wick D having a slot G in same, substantially as and for the purposes
set forth.
3. The pricker C provided with a spring E on same, in combination with the
wick D having a slot G in same, substantially as and for the purposes set forth.
Dated this 10th day of November A.D). 1897
BREWER & SON
London and Leeds. Agents for the Applicants.