Improvements in Reservoir Pens.
Year: 1892

page_text: Date of Application, 20th Feb., 1892-Accepted, 26th Mar., 1892
COMPLETE SPECIFICATION.
Improvements in Reservoir Pens.
We, EDWIN LIONEL BLAKE, of 39, Brook Lane, Glodwick, Clerk, ROBERT
HENRY PLATT, of 131, Honeywell Lane, Mechanic, and SAMUEL TAYLOR, of
102, Hollins Road, Secretary, all of Oldham, in the County of Lancaster, 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 :-
This invention relates more particularly to improvements in that class of reservoir
pens in which a piston is employed for the purpose of charging the reservoir with
ink and feeding the pen therewith and has for its object to provide means whereby
such pens are rendered more reliable, simple and effective than heretofore has been
the case.
And in order that our invention may be more fully understood we have caused to
be appended hereunto one sheet of drawings marked with letters of reference
indicating like parts in the various figures.
Fig. 1 is an elevation of our improved reservoir pen with cover or cap in
section.
Fig. 2 is a longitudinal section without cover or cap.
Fig. 3 a bottom view of the end of the feeding nib without pen.
Fig. 4 is a cross section of Fig. 2 on line A-B.
Fig. 5 is a longitudinal section of the piston detached.
Fig. 6 is an external view of the reservoir pen when empty or nearly so and with
cover or cap in position.
In carrying out our invention and referring to the figures generally a is the
casing or reservoir, the piston, c the feeding nib, d the pen, e the cover or cap.
The casing or reservoir a near its outer end we furnish externally with a stud or
pin and the piston b with a sleeve or jacket g having a bayonet sloth, the sleeve
or jacket g being a fit with and sliding on the casing or reservoir a and the bayonet
slot receiving the stud or pin f adapted to control the piston b in its longitudinal
movement and lock it in position when drawn out to its full extent, by causing the
stud or pin f to enter the cross part of the slot h, as shown in Fig. 1.
In order to always ensure a proper fit of the piston 6 in the casing or reservoir a.
which is a matter of great importance, we form the piston & with a shell closed at
its face and split longitudinally a suitable distance behind the same, as shown more
particularly in Figs. 4 & 5. Inside the said shell we fit a rubber or other elastic
plug i, which serves as a spring and slightly expands the shell of the piston b, fills
up its slit 6 and thus always ensures a tight fit between the same and the casing or
reservoir a.
The feeding nib c consists of a taper tube, suitably fixed to the casing or
reservoir which tube may be internally furnished with a midfeather c' projecting
in front against the pen d.
a,
To prevent the ink leaving the casing or reservoir a through the capillary
attraction, when the pen is not in use and to permit of regulating the flow of ink,
according to its fluidity and the pen used, we may provide the feeding nib c with a
valve c², by preference such as illustrated in Figs. 2 & 3, adapted to cut off or
regulate communication between the pen d and the casing or reservoir a.
When the casing or reservoir a is empty the sleeve or jacket g and piston b are
in the position shown in Fig. 6 and it is desired to fill the same with ink, the cover
or cap e is removed, the valve c² opened, the pen d and the end of the feeding
nib c dipped into the ink vessel and the piston b drawn back into position shown
in Fios 1 & 2

page_text: Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, we declare that what
we claim, is-
"In reservoir pens'
17
1st. The general construction and combination of parts constituting our improve-
ments operating substantially as and for the purpose specified.
2nd. The combination of the piston having a sleeve or jacket g, with the casing
or reservoir a, the casing or reservoir a having externally a stud or pin f and the
sleeve or jacket g a bayonet. slot h adapted to receive the stud or pin f, substantially
as and for the purpose set forth.
3rd. The ink reservoir piston b, formed with a shell closed at its face and split
longitudinally behind the same, adapted to receive a rubber or other elastic plug i,
substantially as and for the purpose set forth.
4th. The use of a valve
the purpose set forth.
employed in the feeding nib e, substantially as and for
Dated this 19th day of February 1892.
F. BOSSHARDT & Co.,
4, Corporation Street, Manchester, Agents to Applicants.