Year: 1886

page_text: Date of Application, 8th Nov., 1886. .
Complete Left, 8th Aug., 1887.
Complete Accepted, 13th Sept., 1887.
We, EDWARD PATTERSON of 24, Daniel Street, Everton, Liverpool, in the County
of Lancaster, Machinist, and WILLIAM HENRY STRYPE, of 41 Norwood Grove,
Liverpool aforesaid, Accountant, do hereby declare the nature of this invention to be
as follows:
This invention relates to miners' safety lamps with automatic extinguishing
appliances. We employ an oil cistern provided with a screwed cup and wick tube
arranged either for a flat or round wick.
There are two concentric glass tubes within the inner one of which the flame burns;
they are supported and held in position by rings and pillars or rods. Between
the concentric glass tubes is an annular space for admission of air to feed the flame,
such air passes downward between the glass tubes then upward and into the inner
tube. Above the flame is or are a gauze cone or cones capable of being readily
withdrawn for cleaning or repairs. Above the concentric tubes are three metal
shields of conoidal form the arrangement being such that air enters near the bottom of the
outer one, passes upward between it and the intermediate one, and then down between
the intermediate and inner shields to the space between the glass tubes, and thence
through gauze or a perforated plate to the interior of the inner glass tube in which
the flame burns.
For causing the light to be automatically extinguished should the lamp be tampered
with after once being lighted and put together, an arrangement is employed such
that on partially unscrewing the upper portion of the lamp a loose perforated bottom
supported on a suitable compressed spiral spring will immediately be released
and will rise moving before it the parts of an extinguisher which will thus close upon
the flame and extinguish it, thus no locking arrangement is required.
According to a modification for automatically extinguishing the light when hoods
or the before described extinguishers are not employed, the perforated plate supported
by the before mentioned spiral spring is provided with a tubular extinguisher capable
of sliding easily over the wick tube so that when released and driven upwards it will
ncircle and extinguish the flame.

page_text: In this arrangement the inner glass tube is loose and the perforated bottom is also
loose so that it can slide within the said glass tube. Thus the naked light cannot be
exposed.
Before the lamp can be sufficiently unscrewed to emit flame or products of
combustion, otherwise than through the exits specially provided therefore, the flame
will be automatically extinguished.
The construction is such that the air to support combustion enters the inner casing
in close proximity to the lighted wick thus ensuring a bright and clear light.
The ordinary wick trimmer at present in use may be employed.
n
01 1
CAT
1
3004
W. LLOYD WISE,
46, Lincoln's Inn Fields, London, W.C.,
Agent for the Applicant.

page_text: We, EDWARD PATTERSON of 125 Northumberland Terrace, Everton, late of
24 Daniel Street, Everton, Liverpool, in the County of Lancaster, Machinist, and
WILLIAM HENRY STRYPE, of 41, Norwood Grove, Liverpool, aforesaid, Accountant,
do hereby declare the nature of this invention to be as follows:-
This invention relates to miners' safety lamps with automatic extinguishing
appliances. We employ an oil cistern provided with a screwed cup and wick tube
arranged either for a flat or round wick.
There are two concentric glass tubes within the inner one of which the flame burns ;
they are supported and held in position by rings and pillars or rods.
Between the concentric glass tubes is an annular space for admission of air to feed
the flame such air passes downward between the glass tubes then upward and into the
inner tube.
Above the flame is or are à gauze or perforated sheet metal cone or cones capable
of being readily withdrawn for cleaning or repairs. Above the concentric tubes are
three metal shields of conoidal form the arrangement being such that air enters near
the bottom of the outer one, passes upwards between it and the intermediate one and
then down between the intermediate and inner shields to the space between the glass
tubes, and thence through gauze or a perforated plate to the interior of the inner glass
tube in which the flame burns.
For causing the light to be automatically extinguished should the lamp be tampered
with after once being lighted and put together, an arrangement is employed such
that on partially unscrewing the upper portion of the lamp a loose perforated bottom
supported on a suitable compressed spiral spring will immediately be released and
will rise moving before it the parts of an extinguisher, which will thus close upon the
flame and extinguish it, thus no locking arrangement is required.
According to a modification for automatically extinguishing the light when hoods
or the before described extinguisher are not employed, the perforated plate supported
by the before mentioned spiral spring is provided with a tubular extinguisher capable
of sliding easily over the wick tube so that when released and driven upwards it will
encircle and extinguish the flame.
In this arrangement the inner glass tube is loose and the perforated bottom is also
loose so that it can slide within the said glass tube. Thus the naked light cannot
be exposed.
Before the lamp can be sufficiently unscrewed to emit flame or products of
combustion, otherwise than through the exits specially provided therfor, the flame will
be automatically extinguished.
The construction is such that the air to support combustion enters the inner casing
in close proximity to the lighted wick thus ensuring a bright and clear light. The
ordinary wick trimmer at present in use may be employed.
Referring to the accompanying sheet of drawings.
Fig. 1 represents in section an improved miner's lamp, according to this invention
in its normal or lighted condition.

page_text: Fig. 2 is an elevation partially in section shewing the body of the lamp sufficiently
unscrewed from the oil cistern to allow the extinguishing tube to rise up and
extinguish the flame.
Fig. 3 is a plan or top view of the lower portion of the lamp shewing the latch and
extinguishing tube and perforated plate in position ready for the upper portion of the
lamp to be screwed on to the oil cistern.
Fig. 4 is a sectional plan on line 6. 7. of Fig. 1 shewing the glass tubes, air space
and pillars or rods.
Fig. 5 is a similar view. in an inverted position shewing the underside of the rings
to which the conoidal shields are attached.
The circular oil cistern A. is provided with a screw cap B. for retaining the circular
wick tube C. in position.
The exterior of the oil cistern is provided with a screw thread on which there
screws a ring F. Upon this ring and the ring E, which fits inside it, the whole
of the upper part of the lamp is mounted. The portion above the two concentric
glasses K. K. is connected to the ring F. by the posts or pillars R. R. which
are shewn as formed each of an internal rod and an external tube or ferrule acting as
'a distance piece.
These rods are screwed at their upper ends into a ring N., and on this, and an
inner ring L, fitting inside it, the metal shields M. P. Q. are carried.
The air to support combustion enters by the holes n. n. in the ring N. and rises
between the shields Q. and F. It then passes through perforations in the shield P.
and descends between the shields P and M. and through holes 1. 1. in the ring L.
into the annular space J. between the glasses K. K. These are held in position
at their lower ends by the ring E. which is perforated with small holes e. c. to allow
the air to pass through it, and gain access through the perforated or gauze plate D¹
to the flame.
The upper ends of the glass tubes K. K. are held by the perforated ring L to which
is attached the inner conoidal shield M. Figs. 1. and 2.
By unscrewing the perforated ring plate E. from out of the ring F. the glasses may
be removed for cleaning or other purposes. Also the perforated ring L and inner
conoidal shield M. can be taken out for cleaning the perforated or gauze head
or cap S. Figs. 1. 2. and 5.
At the top of the shields there is another flanged ring T. not perforated.
This serves to connect the upper ends of the shields, Q. & P. and also for
the attachment of the two perforated tops U. U. The top U. U. is made of two
perforated domeshaped or spherical plates put together as shewn in Figs. 1. & 2.
The perforations are so arranged that they are not opposite each other while the
shape of the top deflects the air current of the mine and prevents it blowing the
carbonic acid back on to the flame.
An ordinary hook or ring V. is provided for carrying or hanging the lamp up by.
By this arrangement the air to support combustion first enters through the
perforated ring N. thence flows upwards between the shields P. Q. and through
perforations at the upper end of the shield P and afterwards passes downwards
by the annular space. J. between the glass tubes K. K. until it reaches the space
between the top of the oil cistern and the perforated plate E. from whence it rises to
the wick.
Encircling the wick tube is another tube D. to which is attached a perforated plate
or disc D¹ of the requisite size to cover or close the space formed in the ring for the
admission of air to the flame. This circular ring E. is screw threaded on its edge, to
take into the ring flango F as shewn in Figs. 1. and 2.
The perforated dise D¹ has one or more (in this case two) projections or armis d.
formed on its lower side, and suitably made to take into retaining catches G fixed
to the oil cistern as shewn in Figs. 1. 2. and 3.
Beneath the perforated disc plate D¹ a spiral spring H. is provided inside the
lower portion of extinguishing tube.
This spring when free raises or forces the extinguisher D. and perforated disc

page_text: plate D¹ up into the position shewn in Fig. 2. thereby automatically extinguishing
the flame.
It will be understood that before lighting the lamp the extinguisher D. and
perforated disc D₁ are first forced downwards, thereby compressing the spiral
spring H. until the arms. d. or projections thereon can by partially rotating same
from right to left engage with the catches G. G. Fig. 3. where they will be held
whilst the upper portion of the lamp is screwed on the oil cistern A.
The thread on the outer side of the oil cistern A. and inside of the ring F. is
of a coarse pitch. On the ring E one or more pins or projections D2 are fixed of
such a length that when the upper portion of the lamp has been screwed down within
(say) one half a revolution from being home, the said pins will engage with the
projections or arms on the perforated plate D₁ and will on screwing the lamp the
remaining half revolution, rotate the said perforated disc plate D¹ and extinguishing
tube D, sufficiently to disengage the arms. d. from the catches or latches G. G. and
thus release them.
The spiral spring will then force the perforated disc D' against the underside
of the ring plate E. where it will be prevented from rising higher until the lamp
is unscrewed which cannot be done whilst the flame is burning without automatically
extinguishing it.
When the extinguisher is in its normal position that is so as to allow the flame
to burn, the upper end of the extinguishing tube will be level with the upper end
of the wick tube as shewn in Fig. 1. and as the lamp is unscrewed the extinguishing
tube will rise on the wick tube until the light is extinguished before the casing
can be removed.
Thus in miners lamps according to this invention no locking apparatus is necessary
as it is impossible for the miner to open the lamp whilst the flame burns.
Suitable packing rings such as asbestos may be inserted at the ends of the glass tubes
to prevent them from breaking, and to allow for expansion.
Having now particularly described and ascertained the nature of our said invention
and in what manner the same is to be performed we declare that what we claim
in Miners' safety lamps is :-
1. The combination with three conoidal shields, and two concentric cylindrical
glasses, of a loose ring of gauze or perforated plate, the arrangement being such that
the air to feed combustion descends between the two glasses, and then rises around
the wick substantially as described.
2. In combination with two concentric cylindrical glasses and ring of gauze
or perforated plate through which the air rises to the flame, a conoidal shield with a
perforated sheet metal or gauze top, the said shield being capable of being easily
withdrawn to be cleaned substantially as described and shewn on the drawings.
3. An automatic extinguishing apparatus which extinguishes the flame if it be
attempted to open the lamp whilst burning substantially as described.
4. In an automatic extinguishing apparatus for safety lamps a loose perforated
plate or ring of gauze carrying an extinguishing tube and provided with catches,
in combination with latches such as G, and a spring, substantially as described.
5. We also claim the improved automatic extinguishing safety miner's lamp
constructed, arranged and operating substantially as described with reference to the
drawings.
Dated this 6th day of Angust 1887.