The bridle knots, E, are shown in detail at H and J. H is a square
knot, which may be easily loosened and
[Illustration: Detail of Box Kite]
shifted to a different position on the bridle, thus adjusting the
lengths of F and G. A bowline knot should be tied at J, as shown,
to prevent slipping. If the kite is used in a light wind, loosen
the square knot and shift nearer to G, thus shortening G and
lengthening F, and if a strong wind is blowing, shift toward F,
thereby lengthening G and making F shorter. In a very strong wind
do not use the bridle, but fasten a string securely to the stick
at K.
--Contributed by Edw. E. Harbert, Chicago.
** Lubricating a Camera Shutter [58]
An experienced photographer uses blacklead [graphite] for grooves
about a camera or holder. A small quantity is rubbed well into the
grooves and on the edges of shutters, that refuse to slide easily,
with gratifying results. Care must be taken to allow no dust to
settle in the holders, however.
** Simple Open-Circuit Telegraph Line [59]
By using the circuit shown in the sketch for short-distance
telegraph lines, the extra switches and wiring found in many
circuits are done away with.
Pages:
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151