Year: 1887

page_text: Date of Application, 19th Feb., 1887
Complete Left, 21st Nov., 1887
Complete Accepted, 23rd Dec., 1887
I, FRANK BISHOP of the firm of Marion and Co. of Soho Square in the County
of Middlesex, Manufacturing photographic Stationers &c., do hereby declare the
nature of this invention to be as follows:-
My Invention relates to an improved collapsible lantern for use in the photographic
dark room, and the Invention consists essentially in the employment of a coiled
spring for distending the colored media or fabric forming the sides of the lantern, in
such a way as to permit of its being readily collapsed, and in the construction of the
lantern as hereinafter described. The lantern may be of circular square or polygonal
form in cross-section, and its sides are formed of one or more thicknesses of colored
fabric or flexible medium which may either be bellows like or plain so as when collapsed
to fold regularly or irregularly as preferred, and it is connected at top to a cap and
at bottom to a ring between which is fixed a strong openly coiled spring that runs
around the internal circumference of the lantern and tends to force the ring and cap
apart so as to hold the flexible fabric distended. The bottom ring fits in or on to a
cupped base provided with means of holding the candle or other source of light and
in which the flexible upper part of the lantern is received when collapsed, means
being provided for retaining it in this position. By this construction, the lantern
may be compressed into a compact form for transport, and will be instantly distended
in readiness for use when required.
Dated this 19th day of February 1887.
52WAD
F. DISHOT.
By A. M. & Wm. Clark,
53, Chancery Lane, London,
Patent Agents.

page_text: I FRANK BISHOP of the firm of Marion & Company of Soho Square in the County
of Middlesex, Manufacturing photographic Stationers &c. 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 :-
My invention relates to an improved collapsible lantern for use in the photographic
dark room; and the invention consists in the construction of lantern hereinafter
described and shown, the essential feature thereof being the employment of a coiled
spring in combination with a collapsible lantern chamber, whereby the lantern will
be automatically distended for use and which will permit of its being readily collapsed
into a very small compass in the manner described.
Reference is to be had to the accompanying drawings forming part of this specifi-
cation wherein figure 1 is a vertical section, and figure 2 a plan, of the improved
collapsible lantern, as extended for use. Figure 3 is an elevation of the same collapsed.
Figure 4 is a vertical section of the collapsible lantern chamber separately. Figure 5
is a section, and figure 6 a plan of the base. The same letters of reference indicate
the same parts in all the figures.
The lantern may be of circular, square, or polygonal form in plan, a square one
being shown in the drawing. It comprises a collapsible lantern chamber A and a
base B. The former is constituted by bellows-like sides of ruby cloth 6 or other
suitable flexible medium connected at top to a metal cap cand at bottom to an annular
metal plate d. Between the plates c and d is fixed a strong openly coiled wire
spring C which tends to force c and d apart so as to keep the collapsible chamber
distended. The end of the spring is soldered to the plate d to keep the spring in
position. The bottom plate d rests in the cupped base B which is provided with a
cup or holder e for the candle around which the plate d passes. In this base B, the
whole of the flexible lantern chamber A is received when collapsed, as shown in
figure 3, pivoted wire loops f, or other means being provided for retaining it in this
position. By this construction the lantern may be compressed into a compact form
for transport and will be instantly distended in readiness for use when required.
The cap c has an outlet for the products of combustion, shielded by a guard c¹ below
the outlet, rivetted to the cap plate c. The candle holder e is supported by a plate g
a slight distance above the bottom of the base B in which is a central inlet for air
shielded by the plate g. In this holder is placed a metal box h containing a night
light. The pivots of the loops f form feet to raise the base B sufficiently off the table
to admit air.

page_text: Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed, I declare that what
I claim is-
The herein described photographic dark room lantern consisting essentially in the
combination with a bellows-like lantern chamber of an internal coiled spring for
distending the same and of a cupped base for receiving the chamber when collapsed,
as described.
Dated this 21st day of November 1887.
F. BISHOP.
By A. M. & Wm. Clark,
53, Chancery Lane, London,
Patent Agents.