Portable Copying Presses wherein Pressure is Applied by Means of Two Wedges.
Year: 1889

page_text: Date of Application, 22nd Nov., 1889
Complete Specification Left, 21st Aug., 1890-Accepted, 4th Oct., 1890
PROVISIONAL SPECIFICATION.
Portable Copying Presses wherein Pressure is Applied by Means of
Two Wedges.
GEORGE FREDERICK LEE GILES Dock House, Southampton Civil Engineer, do
hereby declare the nature of this invention to be as follows:-
The copying of a letter is effected by means of a wedge working in slides at the
sides of the box, this wedge when pressed inwards exerts a pressure on a wedge shaped
block of wood immediately below it, the latter being hinged at the back, so as to adapt
itself to the thickness of the paper or book & transmit an even pressure on the plane
surface immediately beneath it on which the paper rests. The wedge shaped block is
double hinged so that it will lift up to admit the paper & the adjusting of the same.
+
Two pieces of india-rubber felt or some other soft & elastic material are placed
beneath the lower wedge the letter or the copying book, & the oil paper being between.
This soft material insures an even pressure on the paper. The letter is copied with
ordinary copying paper and ink.
The machine can be made of any size & of any metal, as well as of wood, and
adapted to any thickness of copying letter books.
COMPLETE SPECIFICATION.
Portable Copying Presses wherein Pressure is Applied by Means of
Two Wedges.
I, GEORGE FREDERICK LEE GILES, Dock. House, Southampton, Civil Engineer, 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:-
The copying of a letter is effected by means of a wedge working in slides at the
sides of the box, this wedge when pressed inwards exerts a pressure on a wedge shaped
block of wood immediately below it, the latter being hinged at the back so as to adapt
itself to the thickness of the paper or book and transmit an even pressure on the plane
surface immediately beneath it on which the paper rests. The wedge shaped block is
double hinged so that it will lift up to admit the paper and the adjusting of the
same.
Two pieces of india-rubber, felt or some other soft and elastic material are placed
beneath the lower wedge, the letter or the copying book, and the oil paper being
between them. This soft material insures an even pressure on the paper. The letter
is copied with ordinary copying paper and ink.
The machine can be made of any size and of any metal as well as of wood, and
adapted to any thickness of copying letter books.
DESCRIPTION OF THE DRAWINGS.

page_text: to move up or down a short distance parallel to itself to receive copying books of
different thicknesses. The wedge c is provided with a handle c¹ by which it can be
pushed in or out, it also has a projecting iongue c" which can be struck or pushed in
case of the wedge sticking.
In place of both only one of the blocks may be wedge shaped the groove in the 5
frame being in this case made to incline so as to produce the wedging action.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. The combination of a frame and two blocks so formed that when one of the 1
blocks is pushed in a wedging action is obtained substantially as described.
2. The combination of the frame a and blocks b and c substantially as described.
3. In apparatus such as is referred to in the preceding claims the double hinges b¹
substantially as described.