for other Purposes.
Year: 1885

page_text: for other Purposes.
I WILLIAM JAMES LANCASTER trading as J. Lancaster and Son of Colmore Row
Birmingham in the County of Warwick, Optician, do hereby declare the nature
of said invention for A NEW OR IMPROVED FOLDING LAMP FOR PHOTOGRAPHIC
WORK AND FOR OTHER PURPOSES," to be as follows:-
The object of my invention is to make the said lamps extremely portable when
not in use,
without employing loose or detachable parts. The parts of the said
lamps are so constructed and arranged, that they may be folded up when not in
use, into a very small compass.
"
I will describe my invention as applied to a Ruby" lamp for general photo-
graphic work and which lamp resembles the shape of a rectangular prism.
The back of the lamp is made in the form of a shallow rectangular box or case
preferably longer in its upright or vertical direction. This shallow case or open
box is made somewhat longer than the lamp to be formed, and the back of this
case constitutes the back of the lamp; and hinged to the top of the inside of this
case is a triangular plate, with turned up edges, and this plate which is perforated
with suitable holes, forms the top of the lamp. Another triangular plate of the
same proportions as the former, is hinged near the bottom of the inside of the case
or back and makes the bottom of the lamp, while the prolonged or extended part
of the case makes the foot of the lamp or a base upon which it rests.
The space
between the bottom of this prolonged part, and the underside of the lamp forms a
box, wherein a candle or lamp tube or holder to be used with the lamp may be
placed.
The sides of the lamp are like folding glazed doors hinged to the upper edge of
the longer sides of the case, and these glazed sides rest upon the inclined sides of
the triangular plates forming the top and bottom of the lamp. Channels or recesses
are made at the upper and lower edges of the said folding sides wherein the turned
up edges of the hinge top and bottom plates lie when the parts are opened out and
placed in position when the lamp is in use.
The underside plate of the lamp is pierced with suitable air openings, and also
with a central opening, through which a candle tube or candle holder is placed;
and hinged to one side of the case is a lid or covering which when the lamp is in

page_text: use, constitutes a reflector, but when the parts are folded up or collapsed, it forms
a lid to the box or case wherein the top, bottom and sides of the lamp are folded up
one upon each other. The near edge of one of the sides of the lamp is provided
with a peg or an extended foot part which forms the front stand of the lamp.
Thus the parts of the lamp which are hinged together, are made up of a back
shallow case or a box with shallow sides, which has hinged at its top, bottom and
sides, folding plates, which when put in position or together for use, they constitute
a lamp of the shape of an oblong prism; while the cover or lid can be thrown back
or used as a reflector or can be employed for stopping off light, or if necessary, for
regulating the amount of light to be emitted.from one side of the lamp.
The front edge of one of the sides is provided with a yielding flange, which
forcibly holds and overlaps the other front edge on the two sides coming together.
The bottom edge of the case, the bottom edge of the lid and the extended peg on
the front form a secure base to the lamp.
To fold up the lamp, first press back the two sides, then fold up the top bottom
and sides to within the inside of the case, and afterwards close the lid which
makes a compact shallow rectangular box having enclosed within it the parts of
the lamp.
The application of my invention to pocket lamps, bicycle lamps and other
portable lamps for various purposes, differs in no essential respect from its applica;
tion to a lamp to be used in photographic work as herein-before described.
Dated this twantumaand

page_text: .
A New or Improved Folding Lamp for Photographic Work and
for other Purposes.
I, WILLIAM JAMES LANCASTER trading as J. Lancaster and Son of Colmore Row
Birmingham in the County of Warwick Optician do hereby declare the nature
of said invention for "A NEW OR IMPROVED FOLDING LAMP FOR PHOTOGRAPHIC
WORK AND FOR OTHER PURPOSES "and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement:-
The object of my invention is to make the said lamps extremely portable when
not in use, without employing loose or detachable parts. The parts of the said
lamps are so constructed and arranged, that they may be folded up when not in
use, into a very small compass.
I will describe my invention as applied to a "Ruby" lamp for general photo-
graphic work, and which lamp resembles the shape of a rectangular prism.
The back of the lamp is made in the form of a shallow rectangular box or case
preferably longer in its upright or vertical direction. This shallow case or open
box is made somewhat longer than the lamp to be formed, and the back of this
case constitutes the back of the lamp; and hinged to the top of the inside of this
case is a triangular plate, with turned up edges, and this plate which is perforated
with suitable holes, forms the top of the lamp. Another triangular plate of the
same proportions as the former, is hinged near the bottom of the inside of the case
or back and makes the bottom of the lamp, while the prolonged or extended part
of the case makes the foot of the lamp or a base upon which it rests. The space
between the bottom of this prolonged part, and the underside of the lamp forms a
box wherein a candle or lamp tube or holder to be used with the lamp may be
placed, when the lamp is not in use.
The sides of the lamp are like folding glazed doors, hinged to the upper edge of
the longer sides of the case, and these glazed sides rest upon the inclined sides of
the triangular plates forming the top and bottoin of the lamp. Channels or recesses
are made at the upper and lower edges of the said folding sides, wherein the turned
up edges of the hinge top and bottom plates lie when the parts are opened out and
placed in position when the lamp is in use.
The underside plate of the lamp is pierced with suitable air openings, and also
with a central opening, through which a candle tube or candle holder is placed;
and hinged to one side of the case is a lid or covering which when the lamp is in
use, constitutes a reflector, but when the parts are folded up or collapsed, it forms
a lid to the box or case, wherein the top, bottom and sides of the lamp are folded
up one upon each other. The near edge of one of the sides of the lamp is provided
with a peg, or an extended foot part which forms the front stand of the lamp.
Thus the parts of the lamp which are hinged together, are made up of a back
shallow case or a box with shallow sides, which has hinged at its top, bottom and
sides, folding plates, which when put in position or together for use, constitute
a lamp of the shape of an oblong prism; while the cover or lid can be thrown back
J

page_text: or used as a reflector, or can be employed for stopping off light, or if necessary, for
regulating the amount of light to be emitted from one side of the lamp.
The front edge of one of the sides is provided with a yielding flange, which
forcibly holds and overlaps the other front edge on the two sides coming together.
The bottom edge of the case, the bottom edge of the lid and the extended peg on
the front, form a secure base to the lamp.
To fold up the lamp, first press back the two sides, then fold up the top, bottom
and sides to within the inside of the case, and afterwards close the lid which
makes a compact shallow rectangular box, having enclosed within it the parts of
the lamp.
The application of my invention to pocket lamps, bicycle lamps and other
portable lamps for various purposes, differs in no essential respect from its applica-
tion to a lamp to be used in photographic work as herein before described.
I will now proceed to describe with reference to the accompanying drawing the
manner in which the same is to be performed.
Figure 1 is a front elevation of a folding lamp (for photographic work) con-
structed according to my invention; the cover or lid which encloses the same, being
shown open or thrown back. Figure 2 is a transverso vertical section on the
dotted lines A B figure 1, and figure 3 is a longitudinal vertical section on the
dotted lines CD, with the cover or lid closed. Figure 4 is a front elevation of
the lamp with the parts in their respective positions, when the said lamp is in use.
Figure 5 is an end elevation of figure 4.
The same letters of reference indicate corresponding parts in the several figures
of the drawing.
a is the back of the lamp, made in the form of a shallow rectangular box or
case, somewhat longer than the body of the lamp. This extension of the said back
is marked a, and constitutes the base or rest upon which the lamp proper is
supported and hinged to the top of the inside of the said case a, is a triangular
plate b (shown in dotted lines in figure 1.) This plate is provided with a false
bottom perforated about its middle with a hole 68, through which the products of
combustion from the lamp, pass, and is conducted through holes or perforations a³
in the top flange of the back of the case; so that the products of combustion from
the lamp first pass through the hole 62 in the false bottom b¹, and from thence pass
away through the piercings a³; and this said plate b forms the top of the lamp, and
is hinged at bc is another triangular plate of the same size as that of the former,
and hinged at c* to the inside of the back of the case, and near the bottom thereof.
This last named triangular hinged flap c, makes the bottom to the lamp, while the
prolonged or extended part of the case a² makes the foot to the lamp, and the space
between the bottom of this prolonged part, and the underside of the bottom of the
lamp, forms a rectangular box, wherein a candle or Jamp tube or holder d (to be
used for lighting the lamp) is placed, when the lamp is not in use.
b
The sides ef of the lamp are like folding glazed doors, binged respectively
at e f to the longer sides of the back a, and which said glazed sides rest upon the
edges of the triangular top and bottom plates 6 c, and the edges of which latter, fit
or lie within channels or ruts ea f³, when the parts are opened out, and placed in
position, when the lamp is in use, as in figures 4 and 5.
The under side or bottom c of the lamp, is pierced with holes c³, and a central
socket c, through which the front or nozzle end of the candle tube passes; the
piercings are bridged over by half flutings c³, so as to prevent the direct passage of
light through the said bottom. g is a flap or cover hinged at g³ to the offside of
the case a, and when this lid is not in use for enclosing in, or covering up the
collapsed parts of the lamp, as in figures 2 and 3, the inside surface is so polished
or burnished, as to constitute a reflector.
To the near edge of the side f of the lamp, is a peg h, which forms the front
stand or front foot, which when combined with the bottom of the back a and lid g,
forms a tripod rest for the lamp to stand upon. Thus, the parts of the lamp when
opened out and put in position for use, make a lamp prismatio in-cross section, and

page_text: the cover or lid when thrown back more or less, is employed for stopping off or
regulating the amount of light that shall be emitted from one side.
The front edge of the side f is provided with a yielding flange f', which when
the meeting edges of the two sides e and f are brought together, it holds and
secures the sides in position.
When the lamp is required to be used for photographic work or for other
purposes, first open the lid, then turn outwards the top, bottom and sides b, c, e, f,
place them in position as in figures 4 and 5, then insert the candle tube d in the
socket c, when the lamp is ready for use.
To fold up the lamp, first disconnect the flange f* from the meeting edge e, then
open outwards the sides ef and fold up the top and bottom plates bc, and also the
glazed sides e. f to within the inside of the case, as in figures 1, and 3, and which
said parts are afterwards enclosed by the lid g, thus forming a compact shallow
rectangular box, having enclosed within it the other parts.
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
In a folding or collapsable lamp, to be used in photographic work, and for other
purposes; consisting of a back or shallow box a, triangular top and bottom hinged
Haps b, c, (respectively provided with products of combustion outlets, and candle
tube sockets) hinged sides or glazed doors e, f, supporting foot or rest h, candle
tube box a², and combined hinged lid and reflector g-The lamp being constructed,
and the parts arranged and combined, substantially as, and for the purpose herein
described and set forth.