Improvements in Furniture Castors.
Year: 1889

page_text: Date of Application, 23rd Nov., 1889
Complete Specification Left, 23rd Aug., 1890-Accepted, 4th Oct., 1890
PROVISIONAL SPECIFICATION.
Improvements in Furniture Castors.
I, ARTHUR MOORE, of London Works, Aston Lane, Aston, Warwickshire,
Brassfounder, do hereby declare the nature of this invention to be as follows:-
This invention has reference to those furniture castors which are provided with
sockets for their attachment and the invention consists of improvements in the said
sockets whereby they can be attached to the legs of furniture without the use of
screws.
In carrying out this invention I make a castor socket from sheet steel and divide it
longitudinally by vertical slots extending for a certain distance from the upper edge
of the socket towards its base so as to divide the socket into spring tongues preferably
four in number. Each of these spring tongues is provided with one or more pointed
teeth either formed along the upper edge of the tongue or by piercing a V-shaped
hole or holes in the body of the same. When the castor socket above described is
forced on to the leg of a piece of furniture the socket being divided as above described
grips the leg and fits firmly thereon and it is there secured by bending and forcing
the said teeth into the leg. The centre pin of the castor on which the horn piece
turns passes through the bottom of the socket and is secured thereto by a washer
inside and by being rivetted as usual but in order to add greater strength to the
underside of the socket the same is dished upwardly.
Dated this 22nd day of November 1889.
CHARLES BOSWORTH KETLEY,
Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Furniture Castors.
I, ARTHUR MOORE, of Globe Works, Mill Street, Birmingham, late of London
Works, Aston Lane, Aston, Warwickshire, Brassfounder, 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 has reference to those furniture castors which are provided with
sockets for their attachment and the invention consists of improvements in the said
sockets whereby they can be attached to the legs of furniture without the use of
screws.
In carrying out this invention I make a castor socket from sheet steel or other
ductile sheet metal or alloy and divide it longitudinally by vertical slots extending
for a certain distance from the upper edge of the socket towards its base so as to
divide the socket into spring tongues preferably four in number. Each of these
spring tongues is or may be provided with one or more pointed teeth either formed
along the upper edge of the tongue or by piercing a V-shaped hole or holes in the
body of the same. When the castor socket above described is forced on to the leg of
piece of furniture the socket being divided as above described grips the leg and fits
firmly thereon. It is there secured by bending and forcing the said teeth into the
leg. The centre pin of the castor on which the horn piece turns passes through the
bottom of the socket and is secured thereto by a washer inside and by being rivetted
as usual but in order to add greater strength to the underside of the socket the same
is dished upwardly.

page_text: vention attened to the leg of a piece of furniture;
Fig. 2 is a longitudinal section of the same;
Fig. 3 is an elevation and
Fig. 4 a sectional elevation of a modified form of the same;
Figs. 5 and 6 represent in elevation and section respectively a further modification
of my invention ;
Figs. 7 and 8 shew details of the socket of the castor illustrated by Figs. 5 and 6 ;
and
Fig. 9 represents the blank for forming the said socket.
The same letters of reference indicate the same or corresponding parts in all the
figures of the drawings.
A is the socket of the castor divided by vertical slots into spring tongues c so
that when the castor socket is driven on to the leg of a piece of furniture the
spring tongues c will grip the leg and make the socket fit firmly thereon. The said
sockets can either be raised from sheet metal in the usual way and then slotted at 6 by
sawing or punching (see Figs. 1, 2, 3 and 4) or the socket can be formed from a star
or cross-shaped sheet metal blank (see Fig. 9) the lateral projections of which are of
such a shape that when turned up around the centre (see Fig. 7) they will form the
spring tongues c. In this case I prefer to use a cup-shaped washer d around the base
of the socket in order to strengthen the same (see Figs. 5, 6 and 8) which is secured
thereto by the usual centre pin e rivetted over inside.
Ordinary raising tools are used for raising the blank (Fig. 9) into the socket
(Figs. 5 and 7) which being well known require no description here.
The teeth which 1 sometimes form on the spring tongues c of the socket are
marked. In the example illustrated by Figs. 1 and 2 the teeth are formed by
piercing a V shaped hole in the body of the tongue so that when the castor socket
has been forced on to the leg, if it does not then hold firmly it can be further
secured by bending these tongues f inwardly into the leg (see Fig. 2). In the
example illustrated by Figs. 3 and 4 the teeth fare formed along the top edge of the
tongues c. There may be any number of those teeth but I find one on each tongue
as shewn to be sufficient. The base or underside g of the socket is or may be
strengthened by being dished upwardly as shown in Figs. 2 and 4.
The sockets above described can if desired be cased over or covered with thin sheet
brass in the same way that other sockets are covered and when the socket is made
from a cross or star shaped blank as above described the blank has to be covered
with the sheet brass before being raised into the castor form as will readily be
understood.
Although the castor sockets above described will hold on the legs perfectly well
without screws still they can of course be pierced with screw holes and screws used
for additional security if desired.
I find that if a castor socket is divided into four spring tongues as shewn it
answers very well in practice but I wish it to be understood that I do not limit
myself to any particular number of these spring tongues.
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 :-
1. The improvements in socket furniture castors to enable them to be affixed to the
legs of furniture without the use of screws hereinbefore described and illustrated by
the accompanying drawings, that is to say, dividing the sockets into spring tongues
adapted to grip the furniture leg when the castor is forced thereon the said tongues
being either made with teeth, or not, as herein before set forth.
2. A castor of the kind denoted by claim 1 made from a cross or star shaped blank
and having the base strengthened by the cup-shaped washer d, or not so strengthened,

page_text: substantially as herein before described and illustrated by Figs. 5, 6, 7 and 8 of the
accompanying drawings.
3. A castor socket of the kind denoted under claim 1 having its base strengthened
by being dished upwardly as hereinbefore described and illustrated by Figs. 2 and 4
5 of the accompanying drawings.
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