Bauhaus-Universität Weimar

Titel:
The Book of the Lantern. Being a Practical Guide to the Working of the Optical (or Magic) Lantern. With Full and Precise Directions for Making and Coloring Lantern Pictures.
Person:
Hepworth, T. C.
PURL:
https://digitalesammlungen.uni-weimar.de/viewer/image/lit39440/104/
THE BOOK OF THE LANTERN. 
93 
T know most of the lecture-halls in the kingdom, but I am 
not aware of a single one where this arrangement exists. 
The lecturer who visits these places is responsible for 
bringing his own screen, and his assistant must fit it up, 
an operation which is sometimes,—owing to the structure 
of the hall,—very troublesome and difficult. A permanent 
rolled-up screen would obviate all this difficulty, and would 
add greatly, for the reasons already given, to the success of 
the exhibition. I can only suppose that this is one of those 
matters which comes under the head of everybody’s 
business, and therefore nobody attends to it, or seeks to 
remedy what I feel is a mistake. 
We will next consider the method of hanging a sheet on 
a portable frame. Some lecturers adopt this plan, and if 
they are not afraid of adding to their luggage a huge 
bundle of sticks, they certainly have the advantage of 
being independent of ladders, staples, and all the things 
necessary for hanging a sheet in the ordinary way. There 
are several descriptions of frames made for this purpose, 
which are sold by dealers ; some are good, and some 
are very much the reverse, giving much more trouble 
than they are worth. Perhaps the best form of frame is 
that which is made of round pine sticks, about 4 or 5 feet 
long, like broom-sticks, and which fit to one another,— 
fishing-rod fashion,—by means of brass sockets. The 
corners of the frame are represented by sockets mitred, and 
brazed together, see fig. 37. Such a frame as this is easily 
put up. First of all the top pieces are socketed together, 
and furnished with their corner pieces and one length of 
the wooden rods. The side pieces are next placed in their
        

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