The hectograph is a device for making copies of written work. Teachers
whose schools have limited black-board space will find it of great
service. Recipes and other rules for work may be copied and distributed
to the pupils, and thus kept in a permanent form. Many other uses in
connection with the general work of the school will suggest themselves.
The following are the directions for making:
Soak 1-1/2 ounces of white glue in three ounces of water until it is
well softened. Cook in a double boiler until the whole mass is smooth.
Remove from the fire and add six ounces of glycerine. Mix well, re-heat,
skim, and pour into a shallow pan or on a slate. Prick the bubbles as
soon as they show. Allow the mixture to stand for twenty-four hours, and
it is then ready for use.
Write the material to be copied, in hectograph ink, on a sheet of the
same size as that on which the copy is to be made. Write clearly and
space carefully. Wipe the hectograph with a damp cloth. Lay a sheet of
unglazed paper on the hectograph, rub it carefully, and take off at
once. This removes any drops of water, but leaves the surface moist. Lay
the written side of the sheet on the hectograph and rub it carefully
over its whole surface with a soft cloth, so that every particle of the
writing comes in contact with the surface of the hectograph. Leave it
there for four or five minutes. Lift one corner and peel off carefully.
Lay a plain sheet on the hectograph and rub as before. Take off as
before. If the copy is not clear, leave the next sheet on a little
longer. When sufficient copies have been made, wash the hectograph with
a wet cloth before putting it away. Keep in a cool, dry place.