Improvements in the Construction of Chair or other Castors.
Year: 1892

page_text: Date of Application, 18th July, 1892
Complete Specification Left, 13th Sept., 1892-Accepted, 15th Oct., 1892
PROVISIONAL SPECIFICATION.
Improvements in the Construction of Chair or other Castors.
I, JAMES LLOYD of Queen Street Horbury near Wakefield Yorkshire, Watch-
maker do hereby declare the nature of this invention to be as follows :-
Hitherto the ordinary castor used for chairs, tables & other similar articles has
'been defective in its uncertainty of action & the liability to get out of order by
reason of the great amount of strain which was unavoidably subjected to & by reason
of its imperfect construction.
'
The ordinary castor is secured to the leg of the chair or other article by means
of a ferrule or cup with screws through the side.
The frame which contains the roller is connected to the ferrule by means of a
shouldered spindle which is rivetted at each end.
Now my invention is secured to the leg of the chair or other article by means of
a ferrule or cup with screws at the side and by a long screw- which passes through
another cup immediately under the ferrule and into the center of the leg from
below, this lower cup is attached to the frame which contains the roller and contains
balls of metal or other suitable material which revolve round the screw already
named and which passes through both cups. The upper ferrule or cup is provided
with a seat which keeps the balls in position.
HENRY PERCIVAL DAWSON,
Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in the Construction of Chair or other Castors.
I, JAMES LLOYD of Queen Street Horbury in the County of York, Watchmaker,
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 :-
Hitherto the ordinary castor used for chairs, tables and other similar articles has
been defective in its uncertainty of action and the liability to get out of order by
reason of the great amount of strain it was unavoidably subjected to and by reason
of its imperfect construction.
The ordinary castor is secured to the leg of the chair or other similar article by
means of a ferrule or cup with screws through the side. The frame which contains
the roller is connected to the ferrule or cup by means of a shouldered spindle
which is rivetted at each end.
Now my invention is secured to the leg of the chair or other article by means of
screws at the side through the ferrule or cup and by a long screw which passes
through another cup immediately under the ferrule and into the center of the leg
from below, this lower cup is attached to the frame which contains the roller and
contains balls of metal or other suitable material which revolve round the screw
already named which passes through both cups.
The upper ferrule or cup is provided with a seat which keeps the balls in
position.
In order that my invention may be better understood I will now describe the
drawings which accompany this application.
Fig. 1 is a front elevation of the lower portion of a chair or table leg with castor
attached. A is the lower portion of leg. B is the upper cup or ferrule secured to

page_text: leg. C is the lower cup containing the balls. E is the frame which holds the
roller. F is the roller.
Fig. 2 is a section of Fig. 1.
C lower cup containing balls.
into the leg of chair or table.
A leg of chair or table. B upper cup or ferrule.
D is the long screw passing through both cups &
E frame which holds the roller. F roller.
Fig. 3 plan of Fig. 1 through C.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is:
The construction of a castor with ball bearings which is capable of being moved
in any direction with less strain & friction than has hitherto been the case and that
is less liable to get out of order and is capable of being repaired without removing
the upper ferrule from the leg of the chair or other article.
Dated this 12th day of September 1892.
HENRY PERCIVAL DAWSON,
Agent for Applicant,