Improvements in the Lessening or Impeding the Transmission of Vibration from Railway or other Carriage Wheels to Body of Carriage and thence to Passengers Contained therein.
Year: 1894

page_text: Date of Application, 13th Mar., 1894
Complete Specification Left, 10th Dec., 1894-Accepted, 2nd Feb., 1896
PROVISIONAL SPECIFICATION..
Improvements in the Lessening or Impeding the Transmission of
Vibration from Railway or other Carriage Wheels to Body of
Carriage and thence to Passengers Contained therein.
I GEORGE POWELL 104 Newgate Street London do hereby declare the nature
of this invention to be as follows:
When a
railway carriage is in motion the floor vibrates & if there be nothing
between the framework and the body of the carriage it would be impossible to ride
therein with any degree of comfort. India rubber has been used previously to
lessen the vibration but as this material perishes in time & is very costly I find a
more desirable article is a substance such as that known as cork carpet composed of
a combination of cork & linseed oil pressed between heated rollers upon a
foundation of canvas & made so that the particles which compose it cohere com-
paratively loosely. The substance must be of the thickness of 1 inch or more.
When this is laid on the framework of the carriage & the body of the carriage is
placed upon it the vibration of the wheels becomes transmitted to the particles
composing the substance and is thereby deadened or lost. The material may be
placed all round the framework of the carriage or in pieces measuring 12 inches
by 3 inches or six inches by three inches-or of any desired size.
Dated this 12th day of March 1894
GEORGE POWELL.
Improvements in the Lessening or Impeding the Transmission of
Vibration from Railway or other Carriage Wheels to Body of
Carriage and thence to Passengers Contained therein.
I, GEORGE POWELL, 104 Newgate Street, London, Screen Manufacturer, 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:
When a railway carriage is in motion the floor vibrates and if there were
nothing between the framework and the body of the carriage it would be impossible
to ride therein with any degree of comfort. India rubber has been used previously
to lessen the vibration but this material is costly and not very durable. Now I find
that a more desirable article is a substance such as that known as cork carpet
composed of a combination of cork and linseed oil pressed between heated rollers
upon a foundation of canvas and made so that the particles which compose it cohere
comparatively loosely. The substance must be of sufficient thickness to have the
desired cushioning effect. Satisfactory results may be obtained with a thickness of
one inch or more. With this cushioning material laid on the framework of the
carriage and the body of the carriage placed upon it, the vibration of the wheels
and frame when the vehicle is avelling becomes transmitted to the particles
•

page_text: composing the substance and is thereby deadened or lost. The material may be
placed as a pad or cushion in one or more layers all round the framework between
it and the body of the carriage or I make pads or cushions of suitable thickness
and of any convenient size, say for examples twelve inches by three inches or
six inches by three inches adapted to be interposed either close together or at
suitable intervals between the under frame and the body of the carriage so that the
body rests upon them.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed I declare that what I'
claim is :-
1. In a railway carriage or like vehicle a layer or layers of cork carpet such as
hereinabove described interposed between the body of the vehicle and the under-
frame or framework that supports or carries the body substantially as described for
the purpose specified.
2. For lessening or impeding the transmission of vibration from railway or
other carriage wheels to the carriage bodies in the manner set forth pads or
cushions made of cork and linseed oil with a canvas foundation as hereinabove
described.
Deted this 10th day of December 1804
GEORGE POWELL.
W. Lloyd Wise,
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicant.