Improvements in Ball Castors.
Year: 1887

page_text: Date of Application, 23rd May, 1887
Complete Left, 20th Sept., 1887
Complete Accepted, 4th Nov., 1887
Improvements in Ball Castors.
HENRY DANIEL BOOTH, 10 Trigon Terrace, Fentiman Road Clapham Road S.W.
in the County of Surrey, Wood Turner CYRUS COPUs, 22 Clapham Road S.W.
London in the County of Surrey Undertaker do hereby declare the nature of this
invention to be as follows :-
The object of this invention is to construct Ball Castors with a roomy flat top
receptacle with a marginal rim slighty rounded outwards to take all opposition away
from the rolling of the Ball, Fig. 2 is this said portion shewn with socket but its advan-
tage is seen more clearly in Fig 4. The Ball is kept from falling out by screwing or
fixing a cap or shell Fig. 3 to Fig. 2. The cap or shell having on its underside a
recess a trifle smaller in diameter than the diameter of Ball through this the Ball
protrudes the edge of the recess is rounded somewhat Fig. 4. shews each portion in
position. By this construction weight or dirt will not affect the action or rolling of
the Ball. It can be made as screw or plate or any other description of Castor. Fig. I.
shews outside view.
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32
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1009
HENRY DANIEL BOOTH.
CYRUS COPUS.

page_text: COMPLETE SPECIFICATION.
Improvements in Ball Castors.
HENRY DANIEL BOOTH late of 10 Trigon Terrace Clapham Road London S.W.
now residing at 47 Durham Street Harleyford Road Kennington Oval London, S.E.
Wood Turner CYRUS COPUS, 22 Clapham Road, London S.W. Undertaker 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:
The object of this invention is to construct ball castors with a roomy flat top
receptaclo and marginal rim rounding outwards to tako all opposition away from the
roll of the ball. Fig. 2 is this said portion shewn with socket (see drawings left with
Provisional) Its advantage is seen more clearly in Fig. 4. The ball is kept from
falling out by screwing or fixing a cap or shell Fig. 3 to Fig. 2. The cap or shell having
on its underside a recess a trifle less than the diameter of ball through it the ball
protrudes, the edge of its recess is rounded somewhat. Fig. 4 shews each portion in
position and Fig. I is outside view of Castor. In carrying out this invention a roomy
flat top receptacle with marginal rim rounding outwards is used which reduces friction
considerably thereby enabling the ball to revolve easily. The rim can be separate and
placed or fixed within and be made of harder metal or substance than the outer shell,
it could be grooved or notched for any accumulation of dirt to drop out if taken up
by the ball. The receptacle could be extended downwards and form the outer casing
for ball (more fully explained later on). This Top Receptacle used in either of these
methods may be made deep or shallow and can be made of any hard substance or
metals. Brass steel or iron being most preferable, it may also be made by a combina-
tion of or insertions of the same. The Top Receptacle shewn with socket could be
pierced for screws or pins on its underside to be put up underneath, or as usual out-
side. In the case of plate or screw castor, the underside of top receptacle may be
pierced for screws or pins to be put up from the inside, or either may be extended
outside in width by widening the plate outside or depth. By making same with a neck
for screws to be put up, it may also have in either case a fixed central screw, or a stout
loose screw to be put up underneath, or it could be cast or made with a hole of any
shape to recieve a screw, the shape of the hole and portion of screw which it recieves,
of such a nature to keep the screw from slipping round, for an instance, -A square
hole and a squaro shouldered screw placed in the same, this would serve the same
purpose as a fixed screw, in either of these methods the head of screw (which could be
round or flat) could form the top point of contact for Ball. A Ball is used of any
hard substance or composition, which is kept from falling out, by screwing (or any
other method) a cap or shell to the Top Receptacle, the cap or shell having a hole for
Ball to protrude through to meet the ground, Another method would be, instead of
Top Receptacle and cap separate for to make the same in one continuous whole which
could be made prong or claw shape or plain, and the Ball placed within and the edge
(or edges as the case may be) contracted by a hammer or suitable press, leaving at the

page_text: same time freedom of revolution for the Ball. The lower partial covering or casing
of Ball (by any of the methods mentioned herein) are so made that by allowing
sufficient depth, when the Ball comes in contact with the ground it revolves without
touching the lower edge or edges as the case may be, its points of contact being the
floor, the top, and around the rim of top which is very trivial. In the case of Bed-
steads (Iron or Metal) this is very suitable it can be made to fix to any kind of same
or may form part or whole of that portion of bedstead which usually recieves the
same.
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 :
I. The construction of Ball Castors, with a roomy flat top receptacle and marginal
rim rounding outwards from the inside deep or shallow, separate, or part of a divided
casing, or forming part of one continuous casing, the top underside being in some
cases the head of fixing pin or screw.
II. Reducing by this roomy construction the points of contact so that the ball
touches only the ground & top underside (or head of screw) and around the rim of
top receptacle.