Improvements in Magic Lantern Slides.
Year: 1889

page_text: Date of Application, 5th Mar., 1889
Specification Accepted, 4th May,. 1889
Improvements in Magic Lantern Slides.
I WILLIAM CHARLES HUGHES of Brewster House 82 Mortimer Road De Beauvoir
Town N. Optician 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 has for its object the covering of the edges of Magic Lantern slides
and the like with thin sheet Copper, brass or other ductile or malleable metal, in such
a manner as to more perfectly protect the edges of said Magic Lantern slides, than if
covered-in-gummed paper or braid as heretofore which is liable to get roughed up
and broken away after a little use.
In carrying out my invention I may either use a narrow strip of suitable metal of
troughed or channelled shape with pieces cut out at intervals corresponding with the
width of the slide to be covered thus allowing it to be bent round the edge of the said
slide without creasing, or, I may take a square piece of sheet metal and cut therein a
central hole of the size required, and at a predetermined distance from said aperture
turn up the edge of the metal all round previously cutting the four corners in such a
manner that the edges of the sheet metal can be pressed over the edges of the slide
without creasing.
In order that my invention may be the better understood I have appended the
accompanying sheet of drawings in which Fig. 1. is a view of the channeled strip of
metal A in which are cut the nicks B equidistant the width of the slide L to be
covered from each other, at the end E is left projecting a very narrow short strip of
metal G at the end F is a narrow but longer strip of metal H. On referring to
Figs. 2 and 3 the use of the thin strips G and H as also the method of covering the
slide is clearly set forth in Fig. 2 two sides of the slide L are covered, the strip of
channeled metal A is now brought up the right side and along the top when the
longer strip of metal H is doubled around the shorter strip G as shewn at Fig. 3.
when it is pressed closely down to the side of the copper strip shewn in dotted lines
thus securely fastening the whole of the metal edge to the slide L without solder gum
or the like cement.

page_text: Figs. 4, 5, 6, and 7, refer to the second part of my invention in which I is the
square sheet of metal with the aperture J cut therein and the corners K are also cut
away to the shape shewn, it is now bent up all around corresponding to the width of
the slide L as shewn at Fig. 5. and is lapped over the edge of and pressed down upon
the face of the slide as shewn at Fig. 7, fig. 6 being the obverse side, in this case no
joint is necessary to secure the metal to the slide insamuch as it is made in one whole
piece without a break, and being turned over the edge of the slide in the manner
described cannot come off.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed 1 declare that what I
claim is.
First. The channeled strip of copper or brass or other ductile or malleable metal
with tongues G H and nicks B CD, as and for the purpose described and set forth in
Figs. 12 and 3.
Second. The covering of Magic Lantern slides with a square piece of sheet metal
with aperture J cut therein as and for the purpose described and set forth.
Dated this 5th day of March 1889.
WILLIAM CHARLES HUGHES.