Year: 1897

page_text: I, JOHN THOMAS PETFORD, of the Standard Bedstead Works, School Brow, War-
rington, in the County of Lancaster, Manager, do hereby declare the nature of
this invention to be as follows:-
This invention relates to castors for bedsteads and other articles of furniture
and its object is to produce a castor which shall be cheap and simple in construc-
tion, easy running and durable.
The body of the improved castor is cast, preferably in chills, in the form of a
cup which is adapted to contain a metallic or other ball, and which preferably
has in its concavity a plurality of paps. The ball is of sufficient dimensions to
protrude from the mouth of the cup and is retained in place by a cap or the like
which fits upon the mouth of the cup and is formed with an opening to fit around
and over the ball, the diameter of this opening being less than the diameter of
the ball.
The cap may be screwed in place or be secured in any other suitable manner.
In use the cup is inverted so that the contained ball may roll upon the ground
or floor and form a support for the bedstead or the like.
If desired the cup or its paps may rest directly upon the ball but it is preferred
to interpose smaller balls between them. In this case suitable grooves, beds,
races or the like may be cast in the cup for the reception of the balls, or separate
suitably formed devices may be afterwards added. In one form the smaller balls
may be simply inserted between the large ball and the concentric cup the whole
being retained in place by the cap herein before described.
The cup may either be cast with the foot or leg with which it is to be used or
it may be formed separately and be attached in any usual or suitable manner,
as for example by being combined with a spun metal casing or a partly cast and
partly spun casing or foot. In such cases the herein before described cap may be
dispensed with and the ball may be retained by spinning or burnishing over the
metal.
Dand this th 1
D
1003
improvements in Castors for Bedsteads and the like.
I, JOHN THOMAS PETFORD, of the Standard Bedstead Works, School Brow, War-
rington, in the County of Lancaster, Manager, do hereby declare the nature of
[Price 8d.]

page_text: 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 castors for bedsteads and other articles of furniture
and its object is to produce a castor which shall be cheap and simple in construc-
tion, easy running and durable.
The body of the improved castor is cast, preferably in chills, in the form of a
cup which is adapted to contain a metallic or other suitable ball, and which pre-
ferably has in its concavity a plurality of paps. The ball has a sufficient diameter
to cause it to protrude from the mouth of the cup and it is retained in place by
a cap or the like which fits upon the mouth of the cup and is formed with an
opening to fit around and over the ball, the diameter of this opening being less
than the diameter of the ball. The cap may be screwed in place or be secured in
any other suitable manner. In use the cup is inverted so that the protruding
part of the contained ball may roll upon the ground or floor and form a support
for the bedstead or other article.
I will more fully describe my said invention with reference to the accompany-
ing drawings in which;-
Figures 1 and 2 shew one form of my improved castor in elevation and partial
section respectively; Figures 3 and 4, vertical sections of modified forms; and
Figure 5 an inverted plan of Figure 3.
As represented by Figures and 2, the inverted cup C is supposed to be cast
in the bottom of the leg L of the bedstead or other article, the hemi-spherical
paps P being cast in the concavity of the cup. The castor ball B, is preferably
made of steel or other hard metal, porcelain or the like substance, is introduced
into the cup and is there retained by means of the ring or cap R which may be
screwed into the bottom of the leg as indicated.
In the modified form represented by Figure 3, the inverted cup is cast upon a
separate piece L' and the ring R is omitted. The concavity of the cup is formed
by two concentric bores. The paps Pare formed on the shoulder between the
two bores as is indicated by Figure 5. The part L' is connected with the leg L
by means of a brass tube T which, being spun or burnished into the irregularities
of outline in the two parts, connects them together. The lower end of the tube T
is allowed to project, and after the ball B has been inserted this projecting part
is spun or burnished over in substitution for the ring R of Figures 1 and 2.
In the further modification represented by Figure 4, the inverted cup is formed
in the bottom of the leg as in the first example given, but the cup is deeper and
has no paps.
Contact with the ball is made along a narrow zone just above its
equator. The ball is retained in the cup in the same way as described with refer-
ence to Figure 3.
The illustrated examples are described as typical of the modifications which I
may employ in the construction of my cup and ball castor in their more elemen-
tary forms.
It will be understood however that these may be departed from in
many ways without departing from my invention. Thus, when cost does not
interfere, I may, and prefer to interpose small balls between the cup and ball in
such a manner as to form ball-bearings between the cup and ball. In this case,
suitable grooves beds races cages or the like may be arranged in the cup for the
reception of the balls or any known and suitable arrangement may be utilised in
the construction of such additional ball bearings which do not form any part of
my present invention.
Having now particularly described and ascertained the nature of my said in-
vention and in what manner the same is to be performed, I declare that what I
claim is;
1. The combination and arrangement with a cup and ball castor for bedsteads

page_text: structed to rest upon the ball, substantially as hereinbefore described with refer-
ence to the accompanying drawings.
2. As a means for retaining the ball in a cup and ball castor for bedsteads
and other similar articles, a metallic or other suitable tube secured upon the
lower part of the leg or castor and having its lower end contracted so as to retain
the ball, substantially as herein before described with reference to the accompany-
ing drawings.
3. In a cup and ball castor for bedsteads and other similar articles, a castor
body formed separately from the leg and united thereto by an enclosing tube
burnished upon both parts, the lower part of the enclosing tube being contracted
by burnishing spinning or the like so as to retain the ball in the cup, substan-
tially as herein before described with reference to the accompanying drawings.
Dated this 26th day of August A.1). 1898.
W. E. HEYS & SON,
Agents for the Applicant.