An Improved Device applicable to Typewriters, for Protecting their Working Parts from Dust.
Year: 1894

page_text: Date of Application, 12th Dec., 1894
Complete Specification Left, 4th Sept., 1895-Accepted, 12th Oct., 1895
PROVISIONAL SPECIFICATION.
An Improved Device applicable to Typewriters, for Protecting
their Working Parts from Dust.
I, JAMES RICHARD GREENHALGH, of 25, Lisburne Road, South Hampstead,
in the County of Middlesex, Clerk, do hereby declare the nature of this invention
to be as follows:-
This invention relates to a device applicable to a typewriter for intercepting
dust and abraded matter, which would otherwise fall into and derange the working
parts of the machine, when ink-eraser is applied to the paper (without removing
the same from the machine) for the purpose of correcting a typographical error.
Assuming the invention to be applied, by way of example, to what is known as
a "Yöst" typewriter, the device consists of a tray extending across the main ring,
and provided with supports adapted to take a bearing on either side thereof. The
leading edge of the tray is deeply recessed to clear the centre-guide or guide
holder, whilst the edges are slightly turned upwards, the better to retain the
particles of matter which fall upon and are caught by the tray.
Inasmuch as the above-described dust-collecting device in no way interferes
with the proper action of the machine, it may be left in position whilst the
machine is in use, and only removed at intervals for emptying.
1
1004
G. G. M. HARDINGHAM,
91, Fleet Street, London, E.C., Chartered Patent Agent.
An Improved Device applicable to Typewriters, for Protecting
their Working Parts from Dust.
I, JAMES RICHARD GREENHALCH, of 25, Lisburne Road, South Hampstead,
in the County of Middlesex, Clerk, 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 to a device applicable to a typewriter for intercepting
dust and abraded matter, which would otherwise fall into and derange the working
parts of the machine, when ink-eraser is applied to the paper (without removing the
same from the machine) for the purpose of correcting a typographical error.
In the accompanying drawings,
Fig. 1 is a perspective view of the device, the subject of the invention.
"
Fig. 2 is a plan illustrating the application of the same (by way of example) to
what is known as a "Yöst typewriter; only so much of the actual machine being
shown as is necessary to explain the application of the invention. The carriage is
thrown back into the position it would assume when the operator wishes to effect
the erasure of an error.

page_text: The device consists of a tray A which extends across the main ring a and
beneath the track of the carriage of the typewriter. The tray is provided with
supports B B adapted to take a bearing on the plate c on either side of the main
ring a.
One edge of the tray is deeply recessed at C in order to clear the centre-
guide or guide holder d, whilst the opposite edge fits against the inner side of the
bar e upon which the scale is marked. The edges are slightly turned upwards,
the better to retain the particles of dust or abraded matter which fall upon, and
are caught by, the tray.
Inasmuch as the above-described dust-collecting device in no way interferes with
the proper action of the machine, it may be left in position whilst the machine is
in use, and only removed. at intervals for emptying."
If desired, instead of all the edges of the tray being turned upwards, those edges
which project over the supports B B may be flat or may be turned downwards, as
shown in the drawings; the dust or other matter caught by the tray being
discharged by sweeping the same over these edges, thus avoiding the removal of
the tray for the purpose of emptying.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I claim :-
For use in protecting the working parts of typewriters, a dust-intercepting and
collecting tray arranged beneath the carriage and extending across the main ring,
substantially as described with reference to the accompanying drawings.
Doted this 99th dor of Anoust 1405
Noted this 20th
↳ day
August 1905
For the Applicant,
G. G. M. HARDINGHAM,
191, Fleet Street, London, E.C., Chartered Patent Agent.