An Improved Draught and Dust Excluder or Closing Device Applicable to Railway Carriage Doors and otherwise.
Year: 1887

page_text: Date of Application, 9th June, 1887
Complete Left, 8th Mar., 1888
Complete Accepted, 13th Apr., 1888
An Improved Draught and Dust Excluder or Closing Device
Applicable to Railway Carriage Doors and otherwise.
I, FREDERICK ATTOOK, of Somerset House, Newton Heath, Manchester, in the
County of Lancaster, Engineer, do hereby declare the nature of this invention to be
as follows:-
:-
The object of my invention is to provide in a simple and efficient manner for the
exclusion of inrush of air, dust, &c. which occurs through the openings or chambers
designed to receive sliding windows or shutters such as those (the windows) of
Railway Carriage doors and others of the like kind; also to prevent the dropping of
lighted matches and other articles into the said openings.
For this purpose I provide a horizontal flap that may be of metal or other material
and which is so formed proportioned and hinged or pivotted that normally it will
assume an attitude in which its surface will be in a vertical plane, or approximately so,
but when the window is raised and placed in the closed position the lower edge of the
window frame bearing against the flap will cause the same to partly rotate upon its
hinges or pivots into a position in which it will close the opening out of which the
window or shutter has been raised.
The construction of the flap is such that the use of springs to control it may be
dispensed with.
Apparatus as described may be used in conjunction with means such as described in
the specification of my former patent No. 1954 dated 5 May 1881, for excluding dust
draughts &c. at the tops of sliding windows. My invention can be applied to windows
& shutters of private houses &c.

page_text: Applicable to Railway Carriage Doors and otherwise.
I, FREDERICK ATTOCK of Somerset House, Newton Heath, Manchester, in the
County of Lancaster, Engineer, 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 :-
The object of my invention is to provide in a simple and efficient manner for the
exclusion of inrush of air, dust, &c. which occurs through the openings or chambers
designed to receive sliding windows or shutters such as those (the windows) of
railway carriage doors and others of the like kind; also to prevent the dropping of
lighed matches and other articles into the said openings.
For this purpose I provide a flap that may be of metal or other material and which
is so formed proportioned and hinged or pivotted that normally it will assume an
attitude in which its surface will be in a vertical plane, or approximately so, but when
the window is raised and placed in the closed position the lower edge of the window
frame bearing against the flap will cause the same to partly rotate upon its hinges or
pivots into a position in which it will close the opening out of which the window or
shutter has been raised. The construction of the flap is such that the use of springs
to control it may be dispensed with.
Apparatus as described may be used in conjunction with means such as described in
the specification of my former Patent No. 1954 dated 5 May 1881 for excluding dust,
draughts &c. at the tops of sliding windows. My invention can be applied to windows
and shutters of private houses &c.
In the accompanying sheet of illustrative drawings,
Figs. 1 and 2 shew in transverse section so much of a railway carriage door and
sliding window as is necessary to shew the application thereto of my improved draught
and dust excluder, Fig. 1 shewing the window in its lowered or open position and
Fig. 2 shewing it in its raised or closed position.
I is a flap of suitable material such as metal, pivotted or journalled at its ends to
a plate 2 secured to a cross bar 3 forming part of the door . 5 is a garnish rail
provided with a seat 6 that extends across it, and against which the flap can be caused
to close, after the manner of a valve closing against its seat and so as to form a good
joint. The flap 1 is so constructed and pivotted that when the window 7 is not closed
the flap hangs freely as represented in Fig. 1, but when the window is raised from the
chamber 8 moved laterally and then released and so closed in the usual manner its
bottom depresses the upper part of the flap causing its inner part to close against the
seat 6.
The opening at the top of the chamber 8 is thus closed and the passage of air,
dust, etc. therethrough prevented.

page_text: Having now particularly described and ascertained the nature of my said inven
tion and in what manner the same is to be performed, I wish it to be noted
that 1 do not claim broadly the use of a flap for excluding draught and dust as I am
aware it has been proposed to apply and use such in various ways but I declare that
what I do claim is
My improved draught and dust excluder or closing device freely suspended and
arranged to be closed by the window or shutter substantially in the manner
hereinabove described and applicable to railway carriage doors and otherwise as set
forth.
W. LLOYD WISE,
Agent for the Applicant.