Improvements in Police Lanterns.
Year: 1893

page_text: Date of Application, 20th July, 1893
Complete Specification Left, 11th Dec., 1893-Accepted, 27th Jan., 1894
Improvements in Police Lanterns.
I SAMUEL BRUCE EDMONDS of 69 Camden Street, in the City of Birmingham,
Works Manager, do hereby declare the nature of this invention to be as
follows:-
These improvements consist firstly in forming the slide or darkener in corruga-
tions. By using this form the ribs or corrugations confine the light much more
perfectly, when the darkener is being turned, than the ordinary smooth surface
can do.
These corrugations are used as channels to conduct the air from perforations
in the outer case of the lamp to feed the light and thus the light is sustained in
a thoroughly satisfactory manner. A great advantage in introducing the air in
this manner is that the air passing down the corrugations keeps the body of the
lantern cool. The darkener or slide is secured from falling out of place and
moved with accuracy by means of constructing the knob and slot arrangement as
follows: Upon the body of the lantern are two catches placed so that when the
knob for turning the slide comes in contact with them the slide has been turned
to its full extent either in front or behind the light. These catches work in the
slot in the top of the darkener or slide and so keep it in place, two small gaps
in the side of the slot being formed so that when they come opposite the catches
the darkener can be removed from the lantern but will be held securely in its
position at every other point.
Another improvement consists in forming the door and lens carrier in one piece,
thereby avoiding soldering. And a recess being provided for fixing the lens the
bell in front is soldered on and the lamp japanned before the lens is inserted. To
insert the lens it is only necessary to place it in the recess provided for it and
secure it by a wire ring or other simple means, and it can be removed and replaced
by a new one with very little trouble.
Another improvement in these lanterns consists in forming the opening at the
front large enough to allow of applying the ordinary slide arrangement for fixing
the oil vessel, which arrangement is the safest and easiest way of removing and
replacing the oil vessel and by making the opening at the front large I am enabled
to use a sliding oil vessel upon the bottom of which I form a cup or gallery to
retain any oil that may leak or overflow from the vessel and thus overcome the
objection arising from the leakage of the lamps.
Dated this 19th day of July 1893.
HENRY F. TALBOT,
7, Cherry Street, Birmingham, Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Police Lanterns.
1, SAMUEL BRUCE EDMONDS, of 69 Camden Street in the City of Birmingham,
10 Works Manager, do hereby declare the nature of this invention and in what
manner the same is to be performed, to be particularly described and ascertained
Price 8d1

page_text: in and by the following statement, reference being had to the accompanying
drawings and to the letters and figures marked thereon :-
These improvements consist;
Firstly, in forming the slide or darkener in corrugations. By using this form
the ribs or corrugations confine the light much more perfectly when the darkener is
turned than the ordinary smooth surface can do.
These corrugations also form channels for conducting the air from perforations
in the outer case of the lantern to the light, thereby sustaining the flame in a more
satisfactory manner.
Another great advantage in introducing the air in this manner is that the air
passing down the channels formed by the corrugations keeps the body of the
lantern cool.
The improvements consist;
Secondly, in forming the door and lens carrier in one piece, thereby avoiding
soldering. A recess being provided for fixing the lens by a wire ring or other
simple means; thus facilitating the removal and renewal of the lens.
Referring to the accompanying sheet of drawings Fig. 1 is a view of a lantern
with the door thrown back exposing the opening closed by the corrugated slide or
darkener.
Fig. 2 is a plan of same on line a, a, with the door closed and Fig. 3 an inside
view of the door and lens carrier.
(A) Figs. 1 & 2 is the corrugated slide or darkener fitted into the body of the
lantern and turning to or fro in the usual way. These corrugations form channels (D)
for conducting the air between them and the outer case (B) from perforations ()
round the top of the outer case of the lantern, for sustaining the flame of the
lamp, and the air thus passing between the outer case (B) and the slide (A) will
keep the body of the lantern cool.
The darkener or slide (A) may be made secure from falling out of place and
turned by any desired suitable means, as, I do not wish to confine myself to the
method referred to in the Provisional Specification of this Patent.
The opening at the front of the lamp inay be as shewn large enough to allow of
the sliding in and out of the lamp.
The door (E) and lens carrier (F) are made of one piece of metal stamped into
the required form, so that the lens (L) may be placed in from the back, and held
there by the wire ring (W) or other simple means.
The bell (G) may be soldered on and the lamp japanned before the insertion of
the lens (L). And the lens (1) can readily be removed and replaced.
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. Forming upon the slides or darkeners of police and similar lanterns ribs or
corrugations substantially as herein set forth and described.
2. Forming the door and lens carrier of police and similar lanterns in one piece
thereby avoiding soldering.
Dated this 8th day of December 1893.
HENRY F. TALBOT,
7, Cherry Street, Birmingham, Agent for the Applicant.