Improved Drawing Pen.
Year: 1899

page_text: Date of Application, 1st July, 1899
Complete Specification Left, 31st Mar., 1900-Accepted, 5th May,
1900
PROVISIONAL SPECIFICATION
An Improved Drawing Pen.
I, FELIX GAUFROY, of L'Isle Sur le Doubs, Departement du Doubs, in the
Republic of France, Manufacturer, do hereby declare the nature of this invention
to be as follows:-
The invention has for object the construction of a drawing-pen which will per-
mit of the alternate tracing of strong and fine lines, and to pass from the tracing
of strong lines to fine lines, and vice versa, without the necessity of regulating
the drawing-pen each time the change is made, as is the case with drawing-pens
at present in use.
The drawing-pen which forms the subject of the present invention is formed
with two symmetrical branches or arms in conjunction with the body or stem of
These branches are slightly bent or
the drawing pen to be held in the hand.
curved towards each other at one of their extremities to form the nibs of the pen,
as in ordinary, to carry the ink. Near the commencement of these curves there
is provided an axis of oscillation on which the branches or arms are mounted, by
means of sockets or otherwise, and they may be arranged to be recessed into the
stem or otherwise as found desirable. Near the upper extremity of these branches
is disposed between, them a spring, which is fixed to one of the branches. This
spring has the effect of keeping the upper part of these branches expanded apart,
and as a consequence presses together the lower parts, or pen nibs, for to produce.
the fine lines. The action of the spring is regulated, for varying at will the fine-
Another screw of like
ness of the fine lines, by a screw having a milled head.
character, placed between the axis of oscillation and the lower extremities of the
branches, regulates the strong lines. The two screws pass freely through one of
the branches and are screwed into the other. Thus, at one and the same time,
the drawing-pen regulated by the two screws above named, can be made to trace
By holding the drawing-peu freely in the hand.
at will either fine or strong lines.
in the customary manner fine lines can be drawn; but by exerting with the fingers
a slight pressure on the upper parts of the branches or lever arms, strong or thick
lines can be produced. Variations in detail both of design and material, as well
() as dimensions may be made, without departing from the peculiar character of the
invention.
1
To 1899
WILLIAM GADD, C.D.,
64, Barton Arcade, Manchester,
Agent for Applicant,

page_text: An improved Drawing ren.
I, FELIX GAUFROY, of L'Isle-sur-le-Doubs, France, Manufacturer, do hereby
declare the nature of this invention and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement:-
This invention relates to a drawing-pen, with which both fine and thick lines
may be traced, without any alteration of the pen, that is to say without previously
regulating the parts to correspond with the desired stroke, as it is necessary to do
in using an ordinary drawing-pen. The requisite change in the point, or nib,
is effeced by the pressure of the operator's fingers, while still holding the pen in
the act of drawing the lines. In the annexed drawings-
Fig. 1. is a rear elevation of the drawing-pen:
Fig. 2 is a plan view;
Fig. 3. is a front elevation;
Fig. 4. shows certain details in the construction.
'-
Referring to these drawings, A and B are the two symmetrical branches which
compose the body of the pen. C, C are the lower parts of these branches which
combine to form the nib, or point, of the pen. D is the fulcrum, on which the two
branches work. Near the upper end of the branches, there is a spring E, secured
to one of them. by a screw; this spring tends to keep the upper ends apart, or
extended, and consequently to bring the lower ends, or points, C together, in
order to produce a fine line; the spring is adjusted by a screw F, according to
the degree of fineness required in the fine stroke. A screw G, near the other end
of the branches, serves to regulate the degree of thickness, which will be given to
the thick stroke. Both these screws have heads with a milled edge to facilitate
the turning of them, and the said screws turn freely in the branch A, their
threaded part being inserted in branch B.
After having adjusted the parts as above described, by means of the two screws,
the operator can draw fine and thick lines, alternately, or as he may desire to pro-
duce them, that is to say, if he holds the pen lightly, in the usual manner, the
lines drawn will be fine, whereas if he wishes to draw thick lines, he has only to
press slightly with his fingers on the lever-arms forming the upper part of the pen.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed I declare that what
I claim is
1. A drawing-pen, by means of which fine and thick lines may be drawn
without having to alter the parts each time it is desired to change the thickness
of the line, and which is characterised by having two branches pivoted on an axis
situated near their pointed ends, a screw having its head milled round the edge,
and serving to adjust the pointed ends of the branches, and another screw, like-
wise with a milled head, serving to adjust or regulate the action of a spring placed
near the upper ends of the said branches, substantially as described.
2. In a drawing-pen as claimed under No. 1, the combination of two parallel
branches A and B, terminating in two parts CC slightly curved towards each
other to hold the ink, when in use; an axis, or fulcrum D; a screw G, the head
of which is milled round the edge, regulating the degree of separation between
the parts C, C; the flat spring E, tending to keep the upper ends of the branches
apart and a screw F with a milled head, serving to regulate the action of the

page_text: spring E, both these screws turning loosely in branch A and having their threaded
parts screwed into branch B, the whole substantially as described and as shewn
in the accompanying drawings.
FELIX GAUFROY.
By Charles Bauer, Imrie & Co.,
72, Cannon Street, London, E.C.