AN IMPROVED LANTERN SLIDE
Year: 1884

page_text: I WALTER HENRY BULPITT trading as Bulpitt and Sons of Camden Street
Birmingham in the County of Warwick Lamp Manufacturer and Tin Plate Worker
do hereby declare the nature of my invention for AN IMPROVED LANTERN
SLIDE," to be as follows, that is to say
"
ff
Hitherto the slides for covering the light of lanterns have been made from
several pieces of tin or other metal-i,e,-the vertical cover or other shield has
been one piece and the conical top has been a second piece joined to the vertical
piece and the crinkled top or ventilator has been a third piece fastened to the
conical top by a split cotter.
Now my improved lantern slides are made from one piece of tin or other metal,
as follows:-
To form the conical top of the slide I cut V pieces out of the tin or other plate
and close them together the V pieces being in size just sufficient to suit the taper
of the top. Immediately at the base of the cone I form a head or corrugation
around to stiffen the slide and to form a collar for it.
To attach the crinkle or ventilator to the shield I punch up several lips or
tongues from the conical top which pass through holes in the crinkle or ventilator
they are then turned down thus securing it in its position without solder.
GEORGE BARKER,
Agent for the Applicant,
77, Colmore Row, Birmingham.

page_text: COMPLETE SPECIFICATION.
I, WALTER HENRY.BULPITT trading as Bulpitt & Sons of Camden Street,
Birmingham in the County of Warwick "Lamp Manufacturer and Tin plate
Worker do hereby declare the nature of my invention for "AN IMPROVED LANTERN
SLIDE" and in what manner the same is to be performed to be particularly
described and ascertained in and by the following statement, to be as follows, that
is to say :-
Hitherto the slides for covering the light of lanterns have been made from
several pieces of tin or other metal i.e the vertical cover or shield has been one piece
and the conical top has been a second piece joined to the vertical piece and the
crinkle top or ventilator has been a third piece fastened to the conical top by a
split cotter.
Now my improved lantern slides are made from one piece of tin or other metal
as follows:-
:-
To form the conical top of the slide I cut V pieces out of the tin or other plate
and close them together the V pieces being in size just sufficient to suit the taper
of the top. Immediately at the base of the cone I form, a head or corrugations
around to stiffen the slide and to form a collar for it.
To attach the crinkle or ventilator to the slide I punch up several lips or
tongues from the conical top which pass through holes in the crinkle or ventilator
and they are then turned down such securing it in its position without solder.
In order that my invention may be clearly understood and more easily carried
into practice I have appended hereunto a sheet, of drawings containing four
figures which illustrates the mode of forming a lantern slide according to my_
Invention.
Figure 1 is a plate or sheet of metal from which the slide is to be made and it
will be observed that it is notched out with the V notches B, B in such a manner
that when it is curved round into a circle so as to bring the two edges C and D
together that the upper parts or projecting pieces E form the conical roof of the
slide as clearly shown by the Figures 2 and 3. It will thus be clearly seen that
the whole of the body of the slide is formed from the one piece of metal shown by
Figure 1. Of course the crinkled top or ventilator K as seen at Figure 4 is a
separate piece afterwards placed on to complete the slide and may be fastened by
the lips N punched up out of the base of any of the pieces E or cotters may be
used.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to. be performed I declare that what
I claim is
C
The improved lantern slide consisting in the main body of one piece of metal as
shown by Figures 1, 2, and 3 cut out in notches B to leave the fingers E for
forming the top of the slide substantially as and for the purpose herein set forth.
ПЯТРО CATO Tith day at
100%
Uaren Tho kth day
GEORGE BARKER,
Agent for the Applicant,
77, Colmore Row, Birmingham.