Improvements in Pens Employed in Autonatic Recording Instruments..
Year: 1889

page_text: Date of Application, 15th Apr., 1889
Complete Specification Left, 9th Jan., 1890-4ccept:d, 15th Feb., 13.0
PROVISIONAL SPECIFICATION.
Improvements in Pens Employed in Autonatic Recording
Instruments..
I JAMES SELBY, of the Firm of Gray and Selby, 27 Pelham Street, Nottingham,
Opticians, do hereby declare the nature of this invention to be as follows:-
In order to avoid the errors arising from the friction of pencils usually. employed
on the piper in automatic recording instruments, I employ a pen for marking the
diagrams; the said pen consists of a tube of glass, metal, or other suitable material
having a fine orifice at one end, the other end of the tube is secured in a reservoir
containing ink or other marking flaid, the reservoir is either hinged, pivotted, or
swivelled to a rod so as to swing freely, the rod being carried by an arm or bracket
attached to the recording part of the instrument on which it is used.
I am thus enabled to obtain an accurate and indelible diagram.
H. W. GOUGH, C.E.,
Agent.
COMPLETE SPECIFICATION.
Improvements in Pens Employed in Automatic Recording
Instruments.
1 JAMES SELBY, of the Firm of Gray and Solby, 27 Pelham Street, Nottingham,
Opticians, 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 :-
DESCRIPTION OF THE DRAWINGS.
Figure 1 shows a front view of one of my improved pens and a bracket
carrying it.
Figure 2 shows a right side view of the same, and
Figure 3 shows a side view of the pen with the ink reservoir in section.
In order to avoid the errors arising from the friction of pencils usually employed
on the paper in automatic recording instruments.
For marking the diagrams I employ a pen A which consists of a tube of glass,
metal, or other suitable material, having a fine orifice in its outer end.
•
The tube is provided with a screw threaded nut B and india rubber washer C.
After the back end of the tube, and the india rubber washer, have been inserted in
an interiorly screw threaded hole formed near the bottom of a reservoir D containing
ink or other marking fluid, by screwing up the nut B the washer C will be compressed
and form a fluid tight joint.
The reservoir near its upper end is provided with a bar D¹, perforated horizontally
to swing freely on a rod E, carried by a bracket E, provided with two set screws E³
and E, the front of the bar D' has a flat spring D soldered to it, having its outer
end slotted and bent at a right angle over the end of the bar so as to engage with a
groove cut near the outer end of the rod E and thus prevents the reservoir sliding off
the rol when in use. The lower set screw E is for attaching the bracket to the
recording instrument on which it is used, and the upper set screw E³ upon which the
reservoir rests is for holding the point of the pen away from the surface of the paper
or other material on which the diagram is to be made when the paper or other
material is being changed.
By such means I aun enabled to obtain an accurate and indelible diagram

page_text: Having now particularly des ribed 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 :-
The construction and employment in automatic recording instruments, of a pen
carried by a reservoir, swinging on a bracket attached to each recording instrument,
substantially as described and illustrated in the Drawings annexed.
Datori :th I.. of T1000
Witness,
H. W. GOUGH, C.E.,
Nottingham.
JAMES SELBY.
Witness,
H. W. GoгGH, C.E.,
Nottingham.