Improvements in Castors.
Year: 1891

page_text: Date of Application, 3rd July, 1891
Complete Specification Left, 4th Apr., 1892-Accepted, 7th May, 1892
PROVISIONAL SPECIFICATION.
Improvements in Castors.
I CHARLES WILLIAM DAVIES of 8 High Street Harlesden in the County of
Middlesex Architect do hereby declare the nature of this invention to be as
follows:-
My invention relates to improvements in castors for pianos furniture (especially
of the heavy kind) trolleys and other articles requiring to be pushed about.
This improved castor consists of a roller of hard metal porcelain vulcanite or
other hard ball having a bearing on a number of smaller hard metal porcelain
vulcanite or other hard balls retained in a circular groove by which means the hard
roller having a moveable bearing-can revolve very freely and in any direction.
The smaller balls rotate in a matrix or chamber of hard metal the whole being
enclosed in a capsule of bell metal brass or other metal-for the purpose of keeping
the various parts together-the capsule being perforated at the bottom to allow a
portion of the ball roller to protrude and bear upon the floor or surface on which it
is to move.
Dated this 3rd day of July 1801
TONGUE & BIRKBECK,
34, Southampton Buildings, Chancery Lane, London, W.C.,
Agents for the Patentee.
COMPLETE SPECIFICATION.
Improvements in Castors.
I, CHARLES WILLIAM DAVIES formerly of 8, High Street, Harlesden but now of
3, Roskell Terrace, Lower Richmond Road, Putney, in the County of Middlesex,
Architect, 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 :-
My invention relates to improvements in castors for pianos furniture (especially
of the heavy kind) trolleys and other articles requiring to be pushed about."
This improved castor consists of a roller of hard metal porcelain vulcanite or
other hard ball having a bearing on a number of smaller hard metal porcelain
vulcanite or other hard balls retained in a circular groove by which means the
hard roller-having a movable bearing-can revolve very freely and in any
direction.
The smaller balls rotate in a matrix or chamber having a groove or channel
therein and formed of hard metal either as a casting or otherwise the whole being
enclosed in a capsule of bell metal brass or other metal-for the purpose of keeping
the various parts together-the capsule being perforated at the bottom to allow a
portion of the ball roller to protrude and bear upon the floor or surface on which it
is to move.
And in order that my invention may be easily understood and readily carried
into practice I will proceed to further describe same with reference to the drawings
hereunto annexed.

page_text: Fig. 3 is a cross sectional underside plan―on line 1-1 Fig. 1-of the matrix or
loose casting d with the small bearing balls removed.
Fig. 4 is a cross sectional underside plan on line 2-2 Fig. 1 with the bearing
balls in position.
a is the ball which on its under side bears on the floor or surface on which it is
moved.
This ball is held in position by the capsule or cover which is screwed onto or
otherwise suitably secured to e the inner cap or part secured by screws or otherwise
to the furniture or other article.
d. is the matrix or loose inner casting or part having channel or groove e running
all round same which channel e closely fits the anti-friction bearing balls which
are placed therein and thus the balls cannot get out of place or jam as they all
fit snugly in the channel e which is advantageously completely filled with the said
balls f.
Thus the capsule or cover encloses & retains in position not only the roller
ball a and bearing balls but also the loose casting or part d containing the
groove or channel e therein-this, method of construction greatly facilitating
production and economising the cost of same.
This loose part or loose casting d with the grooves such as e therein is the
essential novel feature in my present invention.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed 1 declare that what 1
claim is
―:
1. The roller ball a and the small bearing balls f-the latter fitting snugly in a
channel such as e formed in the loose casting d-in combination with said casting
or loose part d and the enclosing capsule or cover screwed or secured to a mount
or cap such as c fixed on the furniture or other article substantially in the manner
and for the purposes hereinbefore described and illustrated in the drawings hereunto
annexed.
2. 1 claim the loose casting or part d containing a channel such as e and mounted
and retained by and in combination with the enclosing cover or capsule substan-
tially in the manner and for the purposes hereinbefore described and illustrated in
the drawings hereunto annexed.
Dated this ath day of Auril 1809
TONGUE & BIRKBECK,
34, Southampton Buildings, Chancery Lane, London, W.C.,
Agents for the Applicant.