New or Improved Carriers for Supporting Magnesium Flash-lamps used for Photographic Purposes.
Year: 1890

page_text: Date of Application, 2nd Jan., 1890
Complete Specification Left, 2nd Oct., 1890-Accepted, 15th Nov., 1890
PROVISIONAL SPECIFICATION.
New or Improved Carriers for Supporting Magnesium Flash-lamps
used for Photographic Purposes.
I, ROBERT SLINGSBY, of 168 High Street, Lincoln, Photographic Artist, do
hereby declare the nature of the said invention to be as follows:-
This invention relates to new or improved carriers for supporting magnesium flash
lamps used for the purpose of securing artistic dispositions of lighting for photo-
graphing in halls, theatres, rooms, apartments, or other enclosed spaces.
These new
or improved carriers may be arranged horizontally or vertically.
When arranged horizontally, the carrier consists of a support stretched across the
hall, room, or other enclosed space where the photograph is to be taken, as near
the ceiling as possible. To this support is connected, by a special device, a light
framework sufficiently large to carry any required number of the usual magnesium
flash lamps, and suspended by pulleys so that it can be raised or lowered at will to
enable the lamps to be charged and lighted.
When the carrier is arranged vertically, it consists of an upright rod provided with
a foot to enable it to stand on the floor. One or more arms are adapted to slide
on the aforesaid upright rod, each such arm being adapted to carry one or more
magnesium flash lamps and to be set in various directions in order to spread the
area of illumination. These arms can be lowered on the aforesaid upright rod to
enable the lamps to be charged and lit and be then raised thereon to any required
height.
The vertical carriers will be found sufficient in photographing ordinary apartments
up to say forty feet by thirty feet by twenty feet high; and in photographing groups
and interiors of large apartments or spaces they can be used in conjunction with the
horizontally arranged carriers.
These carriers may also support suitable reflectors to aid the lamps. They are
intended to supply the photographer with facilities for using any number of magnesium
flash lamps he may consider requisite to illuminate any given subject; and for placing
the lights so as to secure the best artistic effects.
DL: 1
1000
COMPLETE SPECIFICATION.
New or Improved Carriers for Supporting Magnesium Flash-lamps
used for Photographic Purposes.
I, ROBERT SLINGSBY, of 168 High Street, Lincoln, Photographic Artist, do
hereby declare the nature of the said invention, and in what manner the same is
to be performed, to be particularly described and ascertained in and by the following
statement, reference being had to the accompanying two sheets of drawings and to the
letters and figures marked thereon, that is to say :-
This invention relates to new or improved carriers for supporting magnesium flash
lamps, used for the purpose of securing artistic dispositions of lighting for photo-
graphing in balls, theatres, rooms, apartments, or other enclosed spaces.
In the drawings hereto annexed,
1: 1
1
11

page_text: gure 2 an underside view of the devices for supporting the carrier.
Figure 3 a plan.
Figure 4 an end elevation, and
Figures 5, 6, 7, 8 and 9 full sized detail views of certain of the parts.
The carrier consists of a supporting wire or cord A, stretched across the hall, room,
or other enclosed space where the photograph is to be taken, by means of small pulley
blocks B. This supporting wire or cord A may be placed at any convenient height.
C is a piece of wood about three feet long, more or less, fixed to the wire or cord A at
about the centre thereof, by means of screw clips or clamps D, shown clearly in
Figure 7. This piece of wood C carries on its underside two grooved pulleys E
placed one at each end. C is another piece of wood about eighteen inches long, more
or less, fixed by clips or clamps D to the wire or cord A near one side of the hall in
the same way as the piece C. This second 'piece of wood C' carries on its underside
two grooved pulleys E. F F are cords passing over the pulleys E E snd E', and
secured respectively to wire rings or loops 1, connected by cords H, to the frame-
work G of the carrier, which latter is raised and lowered by the said cords F as may
be required to bring it into a suitable position and to enable the magnesium lamps
to be charged and lighted. G is a light framework, sufficiently large to carry the
required number of the usual magnesium flash lamps. It is constructed preferably of
square wooden rods, connected together, where desired, by means of screw clamps K,
shown clearly in Figures 8 and 9. J is a light wire cord secured at each end to the
framework G and threaded through the loops I, and being stretched taut forms with
the said framework a kind of girder well adapted to carry the weight of the lamps and
their tubes. L are the magnesium flash lamps, supported on sliding lamp carriers L'.
M are the india rubber tubes, connecting the flash lamps L with the distributor N
supported on the carrier N₁ (shown more clearly in Figures 5 and 6) secured
adjustably on one of the bars of the frame G by the screw clip N2. O is a main india-
rubber tube of about " or " bore connected to the distributor N at one end, and to
the pneumatic discharging apparatus at the other, which latter is placed as usual in
any convenient position within reach of the operator.
Figure 10 is an elevation of a carrier arranged vertically.
Figure 11 a plan of same.
Figure 12 a plan of the foot of such carrier.
Figures 13, 14 and 15 full sized detail views of certain of the parts, and
Figure 16 detail views of another part to a scale of half full size.
A is a foot composed of two cross pieces of wood halved together and secured to
one another by the lower screwed end of the upright rod or standard B which passes
through their point of intersection, and may he tightened up by a nut underneath.
The upright rod or standard B may be of wood, but preferably terminates at its lower
end in a metallic socket B' at the lower end of which is formed the aforesaid screw
which passes through and secures together the pieces forming the foot A. The
upright rod B may be made of the required length in one piece, but for convenience
of packing and removal from place to place and for facility of adjustment, I prefer to
make it in two parts connected together by screw clips or clamps D, shown more
clearly in Figure 13, these clips allow of the upper part of the rod B being raised
or lowered and fixed at any desired height on the lower part of the rod or
standard. CC are cords or stays passing from the ends of the cross A to a hook J
secured near the upper end of the lower part of the rod B for the purpose of stiffening
and strengthening the same. E E are double screw clips or clamps adapted to slide
vertically, and to be fixed at any desired height on the upright rod B, (see Figures 14
and 15) and to receive and hold square arms or rods FF which can be set at any
required angle to each other, as shown in dotted lines in Figure 11, so as to enable
the operator to place his lamps in positions suitable for artistic lighting. G are lamp
carriers adjustable on the arms F, they carry the magnesium flash lamps H, each of
which is held in place between the three springs H³, shown in Figure 16. These
lamp carriers are also adapted to carry a reflector H* of white cardboard, silvered
paper, or other suitable material, placed between the pegs H². A light wire frame

page_text: covered with any suitable semi-transparent material, to act as a diffuser, may be
secured in the holes H³ in front of the lamp. I are the rubber tubes leading from
the flash lamps to the pneumatic discharging ball I.
Reflectors and diffusers may also be applied to the lamp carriers I♪ of the hori-
zontally arranged carrier, shown in Figures 1 to 9.
The clips or clamps may be made of any suitable material, but I prefer to make
them of spring steel of suitable thickness.
The vertical carriers will be found sufficient for ordinary photographic portraiture
and for photographic groups in apartments of moderate dimensions; and in photo-
graphing large groups and interiors of large apartinents, or spaces, they can be
used in conjunction with the horizontally arranged carriers.
These carriers are intended to supply the photographer with facilities for using any
number of magnesium flash lamps he may consider requisite to illuminate any given
subject, and for placing the lights so as to secure the best artistic effects.
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 :-
First. The new or improved carrier, for supporting flash lamps for photographic
purposes, consisting of the lamp supporting framework, in combination with means
for supporting and raising and lowering the same, substantially as hereinhefore
described, and illustrated in Figures 1 to 9 of the drawings.
Second. The new or improved carrier for supporting flash lamps for photographic
purposes, consisting of an upright or vertically supported rod or standard, having
lamp supporting armis arranged and adapted so as to be adjustable vertically and
radially thereon, substantially as herein before described, and illustrated in Figures 10
to 16 of the drawings.
Dated this 2nd day of October 1890.