Improvements in or relating to Axles for Deadening Shocks and. Vibrations in Cycles, Carriages, and other Vehicles.
Year: 1894

page_text: Date of Application, 12th June, 1894
Complete Specification Left, 21st Nov., 1894-Accepted, 15th Dec., 1894
PROVISIONAL SPECIFICATION.
Improvements in or relating to Axles for Deadening Shocks and.
Vibrations in Cycles, Carriages, and other Vehicles.
A communication from HENRI FARJAS, of Paris, in the Republic of France.
ALFRED JULIUS BOULT of 323 High Holborn, in the County of Middlesex,.
Chartered Patent Agent, do hereby declare the nature of this invention to be as
follows:-
This invention relates to improvements in that class of wheel attaching device
for deadening shocks and vibrations in vehicles in which cach wheel is mounted on
a journal or axle or in a bearing at the upper end of a link or crank or a pair of
such links or cranks herein for convenience termed "
suspensory cranks
suspensory crank arms at whose lower ends are provided other journals or
pivots or bearings for connection with the framing of the vehicle.
16
"
or
In arrangements such as above referred to the horizontal vibration of shock are
alone deadeued, whereas on the contrary vertical vibration and shock cannot
always be so, on account of the frequency with which the suspensory crank is in
the vertical position. In the present invention a means of obviating such vertical
position of the crank, to remedy the drawback referred to is adopted.
To this end, I interpose a coiled spring encircling the crank-axle journal, and
having its two ends secured the one to the suspensory crank-arm, and the other to
a vertical arm of the road wheel axle, the said spring being so arranged that the
crank-arm when in a state of rest, is always maintained in a position slightly out of
the perpendicular.
It will easily be understood that each vertical shock from below upwards will be
deadened at once by means of the angular opening thus created between the arms
which opening is already established by the action of the spring; and that every
horizontal shock, as well as every vertical shock from above downwards will be
deadened or absorbed by the consequent reduction of the amplitude of the said
angle.
Dated this 12th day of June 1894.
W. P. THOMPSON & BOULT,
Of London, Nottingham, Liverpool, and Manchester,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in or relating to Axles for Deadening Shocks and.
Vibrations in Cycles, Carriages, and other Vehicles.
A communication from HENRI FARJAS, Engineer, of 42, Boulevard Bonne
Nouvelle, Paris, in the Republic of France.
I, ALFRED JULIUS BOULT of 323 High Holborn in the County of Middlesex,
Chartered Patent Agent, 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 an improvement in axles for deadening shocks and
Price Rd1

page_text: vibrations in vehicles for which I filed a Provisional Specification on the 7th of
May 1894 No. 9050.
In the previous arrangement all horizontal vibration and shock is alone deadened,
whereas on the contrary vertical vibration and shock cannot always be so, on
account of the frequency with which the suspensory crank is in the vertical position.
In the present invention a means of obviating such vertical position of the crank
to remedy the drawback referred to is adopted.
To this end there is provided a coiled spring R (Fig. 1) encircling the crank-
axle journal c and having its two ends secured one to the suspensory crank arm e
and the other to a vertical arm a¹ of the axle bar a, the said spring R being so
arranged that the crank arme when in a state of rest is always maintained in a
position slightly out of the perpendicular, as represented in Figure 2 of the
accompanying drawings, which illustrates a carriage axle, and in Figure 3, showing
the application of the system to bicycles.
It will easily be understood from an examination of these three figures that each
vertical shock from below upwards will be deadened at once by means of the
angular opening thus created between the arms a' and e which opening is already
established by the action of the spring R, and that every horizontal shock as well
as every vertical shock from above downwards will be deadened or absorbed by
the consequent reduction of the amplitude of the said angle.
Figure 3 represents the application of this coiled spring to the front wheel of a
bicycle, but the inventor can also apply it to the driving wheel.
Having now particularly described and ascertained the nature of the said inven-
tion as communicated to me by my foreign correspondent, and in what manner the
same is to be performed I declare that what I claim is ;-
In a road vehicle the combination with a road wheel an axle bar and a suspensory
crank arm such as e of a coiled spring for the purpose of diverting from the vertical
position the suspensory crank arm uniting the axle bar to the wheel with a view to
deaden vertical vibration and shock substantially as described and illustrated in the
accompanying drawings.
Dated this 20th day of November 1894.
W. P. THOMPSON & BOULT,
Agents for the Applicant.