Wheels and similar Purposes.
Year: 1885

page_text: Wheels and similar Purposes.
We JOHN LAKE BAKER and THOMAS NEWTON Cox of Hargrave in the County
of Northampton Engineers do hereby declare the nature of our invention for
IMPROVEMENTS IN RISING AND SINKING PLATFORMS FOR TIREING WHEELS OR OTHER
PURPOSES to be as follows:-
To reduce very considerably the power that is usually required for raising plat-
forms and also to provide a quick and easy dip, it being important that a wheel
should be quickly immersed in water as soon as the hot tire is placed upon it, to
prevent the wood from being burnt and quickly raised again for final adjustment,
before being allowed to sink for complete cooling.
The Platforms are firmly supported at three or more points near the circum-
ference upon three or more rollers or balls resting upon three or more inclined
planes or cams, the rollers being carried upon horizontal, radial arms joined together
at the centre, and kept in position by a central pin, or the rollers or balls may be
carried in a circular cage which cage is also kept in position by a central pin. The
Platforms, rollers and cams are placed in a tank of water, the platform lying loose
upon the rollers, the cams being fastened to the bottom of the tank the rollers are
set in motion by a vertical arm, projecting above the edge of the tank from the end
of one of the horizontal arms that carry the rollers, or the outside of the cage if a
cage is used, the rollers move round easily upon the cams, raising or lowering
the platform with them accordingly as they are moved to the right or left, the
necessary power being applied to them by a lever attached to the top of the
aforesaid vertical arm. To reduce to a minimum the labour necessary to move the
rollers we use a counterbalancing weight with chain and pulleys to act upon the
rollers either by direct attachment to one of the radial arms or cage or by connec-
tion with the aforesaid vertical arm or lever, and we provide for the unequal effect
that the weight would exert at the varying position of the vertical arm or radial
horizontal arm (as the case may be) 'to which it is attached by encreasing the incline
of the cams as the rollers ascend, so as to keep the platform and weight as nearly
as possible in a continual state of balance.

page_text: Sometimes we attach the cams to the underneath side of the platform instead of
to the bottom of the tank in which case the cams rise and fall with the platform
and the rollers travel round at the bottom of the tank, the rest of the arrangements
and the result obtained being in all respects similar to the method first described of
attaching the cams to the bottom of the tank, but we use the first described method
for preference.
COMPLETE SPECIFICATION.
Improvements in Rising and Sinking Platforms for Tireing
Wheels and similar Purposes.
We, JOHN LAKE BAKER and THOMAS NEWTON Cox, Engineers of Hargrave in
the County of Northampton do hereby declare the nature of our invention for
IMPROVEMENTS IN RISING AND SINKING PLATFORMS and in what manner the same
is to be performed, to be particularly described and ascertained in and by the
following statement :-
The Platform A. A. A. see plan and section, is firmly supported at three points
near the circumference upon three rollers or balls, B. B. B. B. B. resting upon three
inclined planes or cams C. C. C. C. the rollers being carried upon horizontal radial
arms D. D. D. D. D joined together at the centre and kept in position by a central
pin O. or the rollers or balls may be carried in a circular cage, which cage is also
kept in position by a central pin-The Platform, rollers and cams are placed in a
tank of water E. E. the platform lying loose upon the rollers, the cams being
fastened to the bottom of the tank. The rollers are set in motion by a vertical arm F.
projecting above the edge of the tank E. E. from the end of one of the horizontal
arms that carry the rollers, or the outside of the cage, if a cage is used, or they may
be acted upon by a lever attached to the edge of the platform A. The rollers move
round easily upon the three cams, raising or lowering the platform with them
accordingly as they are moved to the right or left, the necessary power being
applied to them by a lever G. G. attached to the top of the aforesaid vertical
arm F. F. To reduce to a minimum the labour necessary to move the rollers, we
use a counterbalancing weight H. with chain K. and pulley J. to act upon the
rollers either by direct attachment to one of the radial arms D. or cage, if a cage is
used, or by connection with the aforesaid vertical arm F. F. or lever G. and we
provide for the unequal effect that the weight would exert at the varying position
of the vertical arm F. or radial horizontal arm D. (as the case may be) to which it
i
]

page_text: is attached, by increasing the incline of the cams as the rollers ascend, so as to keep
the platform and weight as nearly as possible in a continual state of balance.
Sometimes we attach the cams to the underneath side of the platform instead of
to the bottom of the tank in which case the cains rise and fall with the platform,
and the rollers travel round at the bottom of the tank the rest of the arrangements
and the result obtained being in all respects similar to the method first described of
attaching the cams to the bottom of the tank, but we use the first described method
for preference.
Having now particularly described and ascertained the nature of our said
Invention, and in what manner the same is to be performed, we declare that what
we claim is
1. The raising or lowering of platforms for tireing wheels or similar purposes by
means of three or more rollers or balls connected together by radial arms or enclosed
in a cage, working upon cams, independently of the platform, motion being conveyed
to the rollers, either direct, or by means of the superincumbent Platform.
2. The application of a counterbalancing weight in the manner described and
shewn upon the drawings.