IMPROVEMENTS IN APPARATUS OR MEANS FOR PREVENTING THE ENTRANCE OF DUST INTO RAILWAY CARRIAGES
Year: 1873

page_text: LETTERS PATENT to John Henry Johnson, of 47, Lincoln's Inn
Fields, in the County of Middlesex, Gentleman, for the Invention
of "IMPROVEMENTS IN APPARATUS OR MEANS FOR PREVENTING THE ENTRANCE
OF DUST INTO RAILWAY CARRIAGES."-A communication from abroad by
John Wellby, of New Brunswick, in the Dominion of Canada.
Scaled the 25th April 1873, and dated the 20th February 1873.
PROVISIONAL SPECIFICATION left by the said John Henry Johnson
at the Office of the Commissioners of Patents, with his Petition, on
the 26th February 1873.
I, JOHN HENRY JOHNSON, of 47, Lincoln's Inn Fields, in the
County of Middlesex, Gentleman, do hereby declare the nature of the
said Invention for "IMPROVEMENTS IN APPARATUS OR MEANS FOR PREVENTING
THE ENTRANCE OF DUST INTO RAILWAY CARRIAGES," a communication to me
from abroad by John Wellby, of New Brunswick, in the Dominion of
Canada to be as follow-

page_text: in the application of a peculiar dust screen or guard, herein-after
described, to the ends and sides or to the sides only of each carriage.
These screens or guards are situate at the lower part of the body of the
carriage, and are made to project a short distance outwards from the
ends or sides, whilst they are also brought down as near to the ground 5
as practicable in order to serve as an effectual hood or screen to the
wheels, and thoreby prevent the rising of the dust to the doors and
windows of the carriages.
The screens for the sides of the carriage are composed of two or more
triangular ends or cross pins of wood or metal connected together by 1
longitudinal rods or bars at the top and bottom (outer) angle. This
frame which should extend outwards at the foot in a downward slanting
direction to a distance of, say 6 or 8 inches, and the lowest part of the
frame should be as near the ground as practicable. Into the upper
angle of the frame there is fitted so as to be readily moveable when 1
required a roller with a blind wound thereon, such roller being turned
by a fixed or removeable handle mounted on one or both ends thereof.
The blind which acts as the screen is when in use drawn down or
unrolled and fastened securely to the lowest outer bar of the frame, but
when access to the wheels is required or the roller is to be removed, the 2
said blind is to be wound up. The end screens are of similar con-
struction to the above with this difference that the roller blind or screen
is replaced by a permanent one of thin wood or metal, whilst the frame
may be made to stand out further than the frames of the side screens so
that when the carriages are coupled up the two end screons shall meet 2
as close as possible.
In cases where the carriages are made with entrances at the ends and
fitted with outside platforms the ond scroons twill be entirely covered by
SPECIFICATION in pursuance of the conditions of the Letters Patent 30
filed by the said John Henry Johnson in the Great Seal Patent
Office on the 22nd August 1873.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, John
HENRY JOHNSON, of 47, Lincoln's Inn Fields, in the County of
Middlesex, Gentleman, send greeting.

page_text: WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing dato the Twenty-sixth day of Fèbruary, in 'tho
year of our Lord One thousand eight hundred and seventy-three, in tho
thirty-sixth year of Her reign, did, for Herself, Hér hoirs and successors,
give and grant unto me, the said John Henry Johnson, Her special
licenso that I, the said John Henry Johnson, my exécutors, adminis
trators, and assigns, or such others as I, the 'said John Henry Johnson,
my executors, administrators, or assigns, should at any time agred with,
and no others, from time to time and all times thereafter during
the term therein expressed, should and lawfully might make, use,
exercise, and vend, within the United Kingdom of Great Britain and
Ireland, the Channel Islands, and Isle of Man, an Invention for
**IMPROVEMENTS IN APPARATUS OR MEANS FOR PREVENTING THE ENTRANCE OF
DUST INTO RAILWAY CARRIAGES," a communication to me from abroad by
John Wellby, of New Brunswick; in the Dominion of Canada, upon the
condition (amongst others) that I, the said John Henry Johnson, my
oxecutors or administrators, by an instrument in writing under my
hand and scal, should particularly describe and ascertain the nature
of the said Invention, and. in what manner the same was to be per-
formed, and cause the same to be. filed in the Great Seal Patent Offico
within six calendar months next and immediately after the date of the
said Letters Patent.
NOW KNOW YE, that I, the said John Henry Johnson, do hereby
declare the nature of tho said Invention, and in what manner the
same is to be performed, to be particularly described and ascertained
in and by the following statement, reference being had to the accom-
panying Drawings and to the letters and figures marked thereon, that
is to say :-
1
The said Invention has for its object tho prevention of the entranco of
dust into the interior of railway carriages whilst travelling, and consists
in the application of a peculiar dust screen or guard, heroin-after
described, to the ends and sides or to the sides only of each carriage.
These screens or guards are situate at the lower part of the body of the
carriage, and are made to project a short distance outwards from the
ends or sides whilst they are also brought down as near to. the ground as
practicable in order to serve as an effectual liood or screen to the wheels
and thereby provent the rising of the dust to the doors and windows of
the carriages.

page_text: ground as possible. This roller and blind B should be made to move in
and out of the frame so as to be applied to any carriage that may be
required. C is the handle (which may be a fixture or not) by which
the blind is casily rolled up after use or for facilating the greasing
of the wheels during the journey..
D (Figure 2) is the platform across which access is afforded from one
carriage to another when mado with end doors; E shews the side of the
frame joining the end of the side screen a.
H represents a break hand wheel and spindle the latter passing
through a hole in the screen of which F is the front part. The wholo of
this screen should bo a covered fixed one, made of thin iron or wood
coming down as low as practicable to the ground, and so fixed that the
carriages being coupled the two ends should meet as close as possiblo
without danger of breaking as in Figure 2. I (in Figure 3) shows in
dotted lines the place of the steps off the entrance platform.
Having now described and particularly ascertained the nature of the
said Invention and the manner in which tho same is or may bo used or
carried into effect, I would observo in conclusion that what I consider to
be novel and original, and therefore claim as the Invention secured to
me by the herein-before in part recited Letters Patent is, the side screen
rollers and blind, either separately or in conjunction with the end screens
when used substantially as and for the purpose herein-before described.
In witness whereof, I, the said John Henry Johnson, have to
this my Specification set my hand and seal, this Twenty-second
day of August One thousand eight hundred and seventy-threo...