Means of Electric Light.
Year: 1885

page_text: Means of Electric Light.
I, ERIC HENRY STUART BRUCE, M.A of Exeter College in city of Oxford, in
County of Oxfordshire gentleman, do hereby declare the nature of my said
invention for IMPROVEMENTS IN SANDWICH BOARDS FOR ADVERTISING BY NIGHT
BY MEANS OF ELECTRIC LIGHT, to be as follows:-
The Invention consists of a combination of sandwich boards, one or more portable
electric batteries, primary or secondary, one or more incandescent electric lamps, one
or more lamp holders, leads, connections, one or more reflectors. The sandwich
boards to be made of wood, metal or other suitable material or a frame work
covered with canvass or other suitable substance. The batteries may be placed on
the inner or outer side of each sandwich board or one battery on one side alone
may be used either to light both sandwich boards or one alone. The battery
supplies the current to light one or more incandescent electric lamps placed in
such a manner upon the board or boards as to illuminate the advertisement upon,
the board or boards a reflector is used in connection with each lamp to intensify
the light.
Improvements in Sandwich Boards for Advertising by Night by
Means of Electric Light.
I ERIC HENRY STUART BRUCE M.A. of Exeter College in city of Oxford in
County of Oxfordshire Gentleman, 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 consists of a combination of sandwich boards one or more portable
electric batteries primary or secondary, one or more incandescent electric lamps, one
CD

page_text: or more lamp holders, leads, connections, one or more reflectors. The sandwich
boards to be made of wood, metal or other suitable material or a frame work
covered with canvass or other suitable substance. The batteries may be placed on
the inner or outer side of each sandwich board or one battery on one side alone
may be used either to light both sandwich boards or one alone.. The battery
supplies the current to light one or more incandescent electric lamps placed in
such a manner upon the board or boards as to illuminate the advertisement upon
the board or boards. A reflector is used in connection with each lamp to intensify
the light.
The invention is illustrated in the accompanying drawings wherein fig. 1 shows
the front of one sandwich board illuminated by the lamp & reflector. Figure 2
shows the back of same board containing flat battery to light electric lamp with
pulley, arrangement for lowering and raising plates of battery. Figure 3 shows
side view of board showing the whole arrangement of battery, lamp, reflector
conducting wires &°.
I prefer to make the sandwich board thus-a wooden frame work a (Fig. 2)
covered with a sheet of tin b (Fig. 2) on the front of which latter the advertisement
is pasted-The frame work is traversed on the inside by two cross pieces of
wood c. c (Fig. 2) between which the battery d rests as shewn in Fig. 3-I make
the battery as flat as possible and the case d¹ (Fig. 3) is made high enough to
admit of the plates d² being raised from the solution d in the cells d' by a pulley
arrangement e as shewn in both Figs 2 & 3-Two straps G. G. (Fig. 2) keep the
battery in position-The leads G. G (Fig. 2) pass up the stem / (Fig. 2) of
reflector as in Fig. 1 & 3 to the lamp of (Fig. 3).
In these Drawings one side alone of the sandwich board is represented as being
fitted up-In practice the other board may be similarly fitted up at the option of
the user.
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
The herein described apparatus for advertizing by night by means of electric
light consisting in the combination with a sandwich board of one or more Electric
Incandescent Lamps one or more reflectors, in connection with a portable battery
as and for the purpose hereinbefore specified and as shewn in the accompanying
drawings.