d.
A better way, and one which will permit the use of heavier metal,
is to cut each side of the shade separately and fasten them
together by riveting a piece of metal over each joint. The shape
of this piece can be made so as to accentuate the rivet heads and
thus give a pleasing effect.
For art-glass the metal panels are
[Illustration: The Completed Lamp]
cut out, the glass is inserted from the under side and held in
place by small clips soldered to the frame of the shade. Pleasing
effects are obtained by using one kind of metal, as brass, and
reinforcing and riveting with another metal, such as copper.
[Illustration: METAL SHADE--Construction of Shade]
** Illuminating a Watch Dial at Night [149]
This picture shows a watch holder, with a device to receive an
ordinary electric pocket lamp and battery. The battery is set in a
bracket under which a reflector extends downward to throw the
light on the dial of the watch and to protect the eyes from the
direct light. The entire stand and bracket are made from sheet
metal. The base is formed to make a tray to hold pins and collar
buttons. It is not necessary to seek in the darkness for a push
button or switch, as in ordinary devices, but a light pressure
with the palm of the hand will make the lamp glow.
[Illustration: Lamp]
** Home-Made Photographic Copying Stand [149]
The difficulties of bad lighting on small articles can be entirely
avoided by the use of a suitable support for the camera, the
object and the background.
[Illustration: Secures Good Light on Small Objects]
For illustrations it is often an advantage to show an object with
a perfectly plain background and no deep shadows. When using the
stand as illustrated this is a very simple matter. Figure 1 shows
the side, and Fig. 2 the front view of this stand. The stand is
very easily constructed from pipe and pipe fittings. The main pipe
of the stand will need to be of proper length to suit the focus of
your camera. This can be determined by finding the length from the
lens to the object after the bellows are extended to their full
length. The arms holding the glass, as shown in the sketch, should
be set at a point about the middle of the main tube. The cross
that holds the middle arms should be 3/4 in. one way and 1/2 in.
the other. This will allow for adjustment of the glass table. A
small set screw provided in the back of this cross will hold the
table in any position desired. Th
|