IMPROVEMENTS IN OR APPLICABLE TO THE SLIDING WINDOWS OF RAILWAY CARRIAGES, TRAMCARS, AND OTHER VEHICLES
Year: 1881

page_text: LETTERS PATENT to Frederick Attock, of Newton Heath, near Manchester,
in the County of Lancaster, for an Invention of "IMPROVEMENTS IN OR
APPLICABLE TO THE SLIDING WINDOWS OF RAILWAY CARRIAGES, TRAMCARS,
AND OTHER VEHICLES."
PROVISIONAL SPECIFICATION left by the said Frederick Attock at the
Office of the Commissioners of Patents on the 5th May 1881.
FREDERICK ATTOCK, of Newton Heath, near Manchester, in the County of
Lancaster. "IMPROVEMENTS IN OR APPLICABLE TO THE SLIDING WINDOWS OF
RAILWAY CARRIAGES, TRAMCARS, AND OTHER VEHICLES."
The object of this Invention is certain improvements in sliding windows of
railway carriages, tram cars, and other vehicles, whereby the same are prevented
jarring or rattling in their frames, and whereby draught is effectually excluded,
and consists in applying to the upper framework of the window opening a bar of
wood or other suitable material, which is so shaped and mounted in position as
that its upper edge shall constantly press against the fixed framework, whilst its
lower edge shall press against the upper part of the framework or sash of the
sliding window when closed, this being accomplished by the introduction of two or
more screws or studs which are screwed into the inner face of the aforesaid bar,
and which serve by passing through plates secured to the fixed framework to hold
the said bar in position, the requisite yielding and spring pressure of such bar being
obtained by having coiled springs surrounding the said screws or studs between
their heads and the guiding plates before mentioned. The application of this
spring bar serving to produce a perfectly air tight joint at the upper part of the
window, so as to effectually exclude draughts and weather, and also preventing
the unpleasant rattle or jarring of the sliding window in its framework.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Frederick Attock in the Great Seal Patent Office on the
5th November 1881.
FREDERICK ATTOCK, of Newton Heath, near Manchester, in the County of
Lancaster. "IMPROVEMENTS IN OR APPLICABLE TO THE SLIDING WINDOWS OF
RAILWAY CARRIAGES, TRAM-CARS, AND OTHER VEHICLES."
The object of this Invention is certain improvements in sliding windows of
railway carriages, tram-cars, and other vehicles, whereby the same are prevented
jarring or rattling in their frames, and whereby draught and dust are effectually
excluded. And in order that this my said Invention may be the more readily
understood and carried into practical effect, I have hereunto annexed a Drawing
representing a transverse section of so much of a railway carriage door and sliding
window as is necessary to shew the application of my improvements.
In carrying out my Invention I apply to the upper framework A of the window
opening B a bar of wood or other suitable material C, which is curved or rounded
at its upper edge cas illustrated, and is so mounted in position that such upper
edge shall constantly press against the correspondingly formed groove formed in
the upper framework A, whilst its lower edge d shall press against the upper part
of the framework or sash D of the sliding window E when closed.
This pressing action is accomplished by the application of two or more screws
or studs F, which are screwed as illustrated into the inner face of the wooden bar C,
and which serve by passing through metallic plates G secured to the fixed frame-
work A to hold the bar C in position, the requisite yielding and spring pressure
upon such bar being obtained by having coiled springs I or other suitable springs
surrounding the said screws or studs between their heads and the guiding plates
before mentioned; or other suitable springs might be substituted for the same
purpose. The application of this spring bar (which although only shewn on the
Drawing as applied to the top of the sliding window is equally applicable to the
sides of such windows) serves to produce a perfectly air tight joint, so as to effectually
exclude draughts, dust, and weather, and also to prevent the unpleasant rattle or
jarring of the sliding window in the framework.
Having thus particularly described and ascertained the nature of this my said
Invention, together with the best methods with which I am acquainted for
carrying the same into practical effect, I wish it to be distinctly understood that
I claim as my Invention and desire to secure by Letters Patent,―
The application of a spring bar to the sliding windows of railway carriages,
tram-cars, and other vehicles, mounted and operating substantially as and for the
purposes herein before described and illustrated on the accompanying Drawing.
In witness whereof, I, the said Frederick Attock, have hereunto set my hand
& seal, this 4th day of November, in the year of our Lord 1881.