Improvements in and connected with Furniture Castors.
Year: 1889

page_text: Date of Application, 22nd Mar., 1889
Complete Specification Left, 3rd Dec., 1889-Accepted, 11th Jan., 1890
PROVISIONAL SPECIFICATION.
Improvements in and connected with Furniture Castors.
I, ALEXANDER THOMAS ELOURE of 13 Great James Street, Bedford Row, in the
County of Middlesex, Clerk, do hereby declare the nature of this invention to be as
follows
This invention relates to improvements in furniture castors whereby the same can
be more securely attached to the legs of chairs, tables, or other similar articles of
furniture, than heretofore.
According to this invention I construct the castor with a central cylindrical
upright piece attached to or constructed in one with the pivot pin on which the castor
turns, and of which it forms a continuation extending for a short distance above
the outer socket. This central upright is solid and any suitable number of screw holes
are tapped spirally around its circumference, the ordinary outer socket being
provided with corresponding spirally arranged holes to take the screws.
The method of securing the castor is as follows:-
A cylindrical hole is drilled longitudinally for the reception of the central upright
into which the same is inserted and the castor secured by passing the screws through.
the wood into the tapped holes. When the ordinary wood screws are used, they are
provided at their tips with a machine cut thread corresponding in pitch to the threads
tapped in the central upright.
Dated this 2nd day of March 1889
CASTLE SMITH,
Per F. W. Golby,
"Invention" Office, 54, Fleet Street, London, E.C., Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in and connected with Furniture Castors.
I,ALEXANDER THOMAS ELOURE, of 13 Great James Street, Bedford Row, in the
County of Middlesex, Clerk, 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 improvements in furniture castors whereby the same can
be more securely attached to the legs of chairs, tables, or other articles of furniture
than heretofore.
According to this invention I construct the castor with a central cylindrical
upright piece attached to or constructed in one with the pivot pin on which the castor
turns, and of which it forms a continuation extending for a short distance above the
outer socket. This central upright is solid and any suitable number of screw holes are
tapped spirally around its circumference, the ordinary outer socket being provided
with corresponding spirally arranged holes to take the screws.
The method of securing the castors is as follows:-A cylindrical hole is drilled
longitudinally for the reception of the central upright into which the same is inserted
and the castor secured by passing the screws through the wood into the tapped holes.
And in order that my invention may be more fully understood and carried into
practice, I will now proceed to describe the same with reference to the accompanying
drawings in which similar letters indicate corresponding parts.
Figure 1 is an elevation and Figure 2 a sectional elevation shewing my invention
applied to the leg of a table or other piece of furniture.
A is the central upright piece shewn cylindrical in the drawings but it may be of
other section if desired. The said upright A 1 prefer to rigidly attach to or form in
Pin G27

page_text: one with the pivot pin B, but the upright may be affixed to the base plate of the
castor socket D. Screw holes E are tapped spirally around the circumference of the
upright A, or they may all lie in one horizontal plane, so as to adapt my invention to
the present form of socket.castor where the nail or screw holes are arranged in a
horizontal line around the circumference of the socket.
In securing castors to the legs of furniture, I proceed as follows:-I drill or other-
wise form a central vertical hole in the bottom of the leg F corresponding to the
shape of the upright piece A affixed to the castor, i.e. circular, triangular, square, or
of other cross section. The upright piece A, which has been previously affixed to the
pivot pin B or is formed in one with it, or is otherwise securely attached to the castor,
I then pass into this hole and secure it by means of screw nails G the points of which
are tapped with threads corresponding to the threads E in the upright A, the said
screw nails G being passed through the wood of the leg F into the tapped holes E
with which the screw points engage and form a secure fastening.
By this method of fastening, the wood of the leg is not liable to split, and the
screw nails are kept horizontal, and are thus better able to resist side strains in the
castor. Moreover the invention is easily adapted to the present form of furniture
castor and requires no extra labour in fixing. When using the invention for flat
plate castors the central upright A need not be tapped with the screw holes.
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) In furniture castors the central upright A formed in one with or rigidly
affixed to the pivot pin B or to the base plate C and having holes E tapped around
its circumference to correspond with screw or nail holes in the castor socket D,
substantially as and for the purpose hereinbefore set forth and illustrated in the
accompanying drawings.
(2) The improved method of securing castors by means of a central upright sub-
stantially as described and illustrated.
Dated this 2nd day of D 1000
CASTLE SMITH,
Per F. W. Golby,
Invention" Office, 54, Fleet Street, London, E.C., Agent for the Applicant.
.