Improvements in Castors for Furniture.
Year: 1892

page_text: Date of Application, 1st Apr., 1892
Complete Specification Left, 2nd Jan., 1893-Accepted, 11th Feb., 1893
PROVISIONAL SPECIFICATION.
Improvements in Castors for Furniture.
I, JOHANNES BÜRDE 15 Gordon House Road Highgate Road London, N.W.
Military Instructor, do hereby declare the nature of this invention to be as
follows:-
This invention relates to an improved furniture castor in which a combination
of balls and roller is used.
This castor is fixed to the leg of the table, couch or other article by means of
a screw fixed to or in one with the upper part of the castor and projecting as a
circular rod for some distance below. A loose ring is placed on the rod and a
circular case of the same diameter as the upper part of the castor with a number
of radial arms projecting inwardly, is placed around it, forming with the ring. a
number of compartments, preferably six. A steel ball is placed in each of these
compartments and the lower part of the castor carrying the roller is then put on,
holding the balls in place.
The roller is situated a little to one side of this carrier, which is provided with
a central hole through which the spindle above mentioned passes, being prevented
from coming off by a pin passing through the lower part of the spindle or a collar
at its end.
With this arrangement the roller will turn in any direction on very slight
pressure, as it is loose on the spindle, the whole weight being taken by the balls
which always remain in their own compartments. The castor can be readily taken
off or taken to pieces and put together again if required; as the various parts are
loosely held together.
Dated this 1st day of April 1892
GEO. H. RAYNER,
37, Chancery Lane, London, W.C., Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Castors for Furniture.
I, JOHANNES BÜRDE; 15 Gordon House Road, Highgate Road, London, N.W.
Military Instructor 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 improved furniture castor in which a combination
of balls and roller is used.
The upper part of the castor is formed with a circular rod projecting for some
3 distance below. A loose ring is placed on the rod and a circular case of the same
diameter as the upper part of the castor with a number of radial arms projecting
inwardly, is placed around it, forming with the ring a number of compartments
preferably six, or a loose disc may be employed pierced with a central hole for the
pin and with a number of holes for the balls. A steel ball is placed in each of
these compartments and the lower part of the castor carrying the roller is then
put on, bolding the balls in place.
The roller is situated a little to one side of this carrier, which is provided with
a central hole through which the spindle above mentioned passes, being prevented
from coming off by rivetting or bỹ a pin passing through the lower part of the
spindle or a collar at its end.

page_text: With this arrangement the roller will turn in any direction on very slight
pressure, as it is loose on the spindle the whole weight being taken by the balls
which always remain in their own compartments. The castor can be readily taken off
or taken to pieces and put together again if required, as the various parts are
loosely held together.
In order that my invention may be more clearly understood, reference is had
to the accompanying sheet of illustrative drawings, in which
Fig. 1, is a vertical section of a castor according to my invention, and
Fig. 2, a front elevation of a similar castor, showing a different method of fixing
to the leg of an article of furniture, and
Figs. 3 & 4 plans of the loose disc or ring forming the chambers for the balls.
A is the upper part of the castor fixed to the leg by means of the cap B or
screw C and carrying on its under-side the stout pin D. This projects downwards
through the underside of the lower part E of the castor carrying the roller F,
the disc G, with central hole and a number of holes H arranged around the centre,
being placed on the pin. The balls J are retained in these holes, the top A resting
on the balls which are thus situated between the upper and lower parts in separate
compartments.
The lower part and disc may be fastened on the pin D in any suitable manner,
such as by a pin or rivetting as shown, allowing them to turn easily on the pin.
The disc is shown with a small boss resting on the lower part of the castor and
serving as a bearing, but this may be dispensed with.
Fig. 4 shows another method of forming the compartments for the balls, by
means of the ring K fitting loosely around the pin D and the outer ring L with
radial arms L' projecting inwardly a suitable distance. The ring K may be
separate from the radial arms or may be formed in one with them.
Having now particularly described & 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 :-
1. A castor formed of an upper part or disc A carrying a pin D, a disc or
rings & partitions forming compartments carrying balls, and a lower part E
carrying a roller, fitted loosely on the pin Ď, substantially as described and
illustrated in the accompanying drawings.
2. In a castor of the kind described, a disc or rings and partitions forming,
along with the upper and lower parts, compartments in which balls can be inserted,
substantially as and for the purposes specified.
Dated this 31st day of Dasambar 1000
GEO. H. RAYNER,
37, Chancery Lane, W.C., Agent for the Applicant.