IMPROVEMENTS IN PERSPECTIVE DRAWING APPARATUS
Year: 1883

page_text: LETTERS PATENT to Herbert John Haddan, of Kensington, Middlesex for an
Invention of IMPROVEMENTS IN PERSPECTIVE DRAWING APPARATUS com-
municated to him from abroad by William Sweet Worden of Nebraska United
States
COMPLETE SPECIFICATION filed by the said Herbert John Haddan at the
Office of the Commissioners of Patents on the 3rd July 1883..
HERBERT JOHN HADDAN, of Kensington, Middlesex, "IMPROVEMENTS IN
PERSPECTIVE DRAWING APPARATUS" communicated to me from abroad by William
Sweet Worden of Nebraska United States
This invention relates to apparatus or devices for free-hand perspective drawing,
and has for its object to provide a simple, inexpensive, and efficient means whereby
this art may be readily and quickly acquired.
In the drawings, Fig. 1, is a perspective view of the apparatus; Fig. 2, a side
view, showing the manner of using; Fig. 3, a vertical sectional view; and Fig. 4, a
top view.
Referring to the drawings, A designates a rectangular frame forming the front
of the camera.
From the four corners of frame A extend, rearwardly, convergent
bars or pieces B B and C C, the top pair of which being designated by the latter
letters. To the ends of the convergent bars, is secured a rear rectangular frame, D,
forming the back of the camera. The inner rear edge, E, of the side bars, F F, of
frame A are formed with vertical grooves G, as shown, in which is arranged a front
glass plate, H. In rear of the latter is placed a sheet of perforated paper, I, the
whole being secured in place by spring catches, J, on side bars, F F, the catches
preferably consisting of a coil, K, having a projecting arm, I, and a turned over
end, M.
The operation and advantages of my invention will be readily understood. In
practice, the fore-head is placed against the top rail of rear frame D and, with a
pencil in the right hand, the landscape or object seen through the glass and paper,
is drawn on the latter.
The landscape or object is seen in reduced true perspective, and as the eye
follows the outlines, the pencil need only follow the eye. Thus a true perspective

page_text: of any object may be quickly obtained, and by altering the distance between the
object and apparatus, by removing the latter, the size of the drawing will be
increased or diminished, as desired.
When one side of the perforated paper has been drawn on, it may be turned over
and the other side utilized, as the drawing on one side, does not in the slightest
degree interfere with the other. The paper may then be separated from the frame
and if desired the landscape may be reproduced and enlarged on drawing paper
with a pantagraph. In this manner unskilled persons can readily produce a
perspective drawing, and the eye is trained in this art.
I claim as new -
1. The combination, in a perspective drawing apparatus, with the front frame,
carrying a glass plate and perforated drawing sheet, of the rear frame or rest; as
set forth.
2. The combination, in a perspective drawing apparatus, of the front frame having
its side pieces provided with spring catches, a glass plate, a perforated drawing
sheet placed in rear of the glass, the rearward connecting bars or pieces, and the
rear frame or fore-head rest; as set forth
3. The combination, in a perspective drawing apparatus, of the rectangular front
frame, having the side pieces grooved and provided with spring catches and
provided at its four corners with convergent rearward extending rods or pieces,
and the rear rectangular frame or rest; as set forth.
"
In witness whereof I the said Herbert John Haddan have hereunto set my
hand and seal this second day of July in the year of Our Lord one thousand
eight hundred and eighty three.