Improvements in or Connected with Miner's Safety Lamps.
Year: 1897

page_text: Date of Application, 10th June, 1897-Accepted, 10th July, 1897
COMPLETE SPECIFICATION.
Improvements in or Connected with Miner's Safety Lamps.
I, AUGUSTE LAUNE of 108 Rue de l'Evêché, Marseille in the French Republic,
Mechanical 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 :-
This invention relates to miner's safety lamps fitted with mechanism or apparatus
for lighting the lamp without opening the same for which Letters Patent No. 12913
A. D. 1895 have been granted to me, and consists chiefly in improvements in the
match delivering and striking apparatus the object of which is to render said apparatus
simpler and cheaper.
In order that my invention may be readily understood and carried out I have
hereunto appended two sheets of drawings on which
Figure 1 represents an elevation partly in section of the lamp consisting of the
bottom part G containing the oil receptacle and match striking apparatus attached
thereto, the cage H with glass H¹ and the chimney consisting of the wire gauze
chimney tand the sheet iron cover T with openings f round the top.
Figure 2 shews a section along line C D of Figure 1 ;
Figure 3 an elevation partly in section of the bottom part G and Fig. 4 a top view
of the same, without any of the attachments.
Figure 5 a section along line A B of Fig. 1; with the match striking mechanism
removed;
Fig. 6 a half elevation and half section of the cage H and Fig. 7 a half top view and
half section along line M N of Fig. 6;
Fig. 8 a half section and half elevation and Fig. 9 a plan of the hoop t¹ forming the
base of the chimney T.
Fig. 10 represents the wire gauge mantle t fixed between the copper hoops t²
and by means of four diametrically opposite centre punchings d;
Fig. 11 the small rods effecting the delivery and striking of the match, and Fig. 12
a plan of the cover & Fig. 11;
Figs. 13, 14 and 15 front and side views and plan of the wick holder o.
Figs. 16 and 17 show the match striker in its normal position;
Figs. 18 and 19 a sectional elevation and plan of the match barrel;
Fig. 20 the rod for locking the cover of the match cylinder;
Fig. 21 a half section and half elevation of the glass H¹;
Fig. 22 a half section of the bottom part along line E F Figs. 4 and 6 ;
Figs. 23 and 24 a section and plan of the ring o¹ Figs. 1 and 25 that fixes the
wick holder;
Fig. 25 a section through the match striking mechanism with the parts in the
lighting position.
As in the arrangement described in my Specification No. 12913 A. D. 1895 a
cylinder g is soldered into the bottom part G of the lamp, into which a match barrel u
is inserted. The barrel consists of a central stem u¹ formed with a square hole and
two discs u² u³ into which the tubes u' arranged in a circle are placed. The barrel u
ron

page_text: is held in the cylinder by a cover & screwed into the bottom end of the cylinder,
and locked in its position by means of a rod a² which is screwed into the tapped hole
of the lug 8¹ through the tube a, Figs. 2 and 5, from the top, so that the cover 8
cannot be unscrewed and matches abstracted after the lamp has been locked in the
usual way. A rod i¹ formed square in its middle part passes through the stem u³ and
the match barrel can be turned round by turning the rod by means of the knob.p. A
spring R is bolted to the top plate g¹ and has fixed in its free end a centre point or
its equivalent which enters into one of the tubes ut and thereby secures the barrel in
such a position that one of the tubes is underneath the tube of the match striker.
The lower end of the rod i is round and a crank n is mounted loosely on the rod, the
outer end of which carries a rod i, the end of which when the rod is pulled down as
far as it will go, enters the cover 8 and allows the barrel to be turned, and when
pushed up, pushes a match out of the tube above it into and through the striker c.
The matches can be inserted into the barrel through a hole g² Figs. 1 and 5 when the
lamp is open without the cover 8 being unscrewed.
The striker consists of a tube c fixed in the top plate g and having a bracket c¹
soldered to it on which a piece c² is hinged, having a short tubular part forming a
prolongation of the tube c when in its normal position (Figs. 16 and 17) and a curved
A spring
tail piece through a slot in which the upper end of the rod passes.
blade m bent so as to overhang the tube c as shewn is fixed to the back of the
bracket c¹ and holds the piece 2 down upon the tube C with a slight pressure.
The remaining parts
A wire 61 for raising the wick passes through a tube b.
of the lamp and the way they are put together are clearly shewn on the
drawings.
The matches are filled into the barrel one by one through the hole g² when the
lamp is open for filling in oil. After the lamp has been closed, and locked by a pad-
locked pin passed through the lugs g³ g₁ or otherwise, the lamp can be lit by quickly
pushing up the knob p. This will push up the rod i by means of the crank 'n and
push the match, contained in the tube u just then above n, up through the
tube c and force it against the curved roughened surface of the spring m.
At the same time as the striking end of the match is pushed against m the square
part of rod strikes against the curved tail and by turning the same carries
the head of the match along the roughened surface of m and strikes it, and then
turns it over further into the position shewn in dotted lines on Fig. 25 and lights
the wick. When the knob is pulled down again the nut 2 screwed upon the
upper end of the rod i¹ turns the piece c² back into its normal position.
To relight the lamp if it becomes extinguished, the barrel is turned to place the
next tube u' underneath the striker c and the knob p pushed up again.
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 :-
1. In a miner's safety lamp the improved construction or arrangement of mechanism
for pushing out, holding, striking and presenting each match contained in a multi-
tubular barrel successively to the wick substantially as hereinbefore described and
illustrated by the drawings.
2. The improved general arrangement or combination of parts of a miner's safety
lamp provided with an internal match striking apparatus substantially as herein before
described and illustrated by the drawings.
Dated this 9th day
R. J. URQUHART,
57, Barton Arcade, Manchester, 6, Clayton Square, Liverpool,
Consulting Engineer and Patent Agent.