Improvements in Furniture Castors.
Year: 1892

page_text: Date of Application; 16th July, 1892-Accepted, 20th Aug., 1892
COMPLETE SPECIFICATION.
Improvements in Furniture Castors.
I, SAMSON CHAMBERS of Broad Oaks, Attercliffe, Sheffield, in the County of
York, Gentleman, 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 more particularly to the framework of castors; and the
rollers that I prefer to use in combination with such frames are described in my prior
Patent No. 11660 of 1891, but other rollers may be used if desired.
The annexed sheet of drawings illustrates my invention, and similar letters of
reference indicate similar parts in any of the figures.
Fig. 1, is a side elevation of a castor, partially shown in section, and is adapted
for heavy articles such as pianos.
Fig. 2, a similar view of an improved castor for lighter articles.
Fig. 3, a similar view of a "forked-frame" castor.
In carrying out my invention in the construction of a castor frame as illustrated
in Fig. 1, I make the said frame to consist of two chief parts, one part to carry the
roller and to turn with it, and the other part to be secured to the article of
furniture, both parts being connected by a pin or screw.
A, is the part carrying the roller, B, the part to be secured to the article of
furniture, C the pin.
As the roller that I prefer to use is of a spherical form, I make the lower part
of A, circular, and the upper part A', dome shaped, so as to entirely cover the
roller, and this dome may be made solid with the remainder of the part A, or be
made separate therefrom and be removable.
The upper part A2, which I have shown in section has a recess or socket hole D,
to receive the lower part of the part B, and a screwthreaded hole E, to receive
the screwed end of the pin C.
The two parts A and B, may be constructed, to bear upon each other at F, or
at G, and I may interpose a washer between the two parts in either place.
To hold the two parts together, I use a pin C, having a shoulder C', let into the
face of B, the shank passes through the lower part of B, and screws tightly into
the part A, where the projecting end may be slightly enlarged by the hammer to
prevent unscrewing; or I may use a screw such as J, secured by a washer, or cap
on the top of B.
I prefer to make the top of B, square when used for pianos to give a large area of
surface for the piano to bear upon, and it is also provided with screw holes H, the
pin C, may be plain or provided with a screw thread.
For smaller articles the plate B, see Fig. 2, may be round, or of other form to
correspond with the part to which it is to be attached, or it may be a socket to
receive the end of a chair leg or the like.
In Fig. 3, I have shown the part A, made with the usual forked arms A³;
between which the roller is held, and I have also shown the substitution of a
common screw J, in place of the pin C.
The part B, fits into the part A, as before described, and the screw J, is passed
upwards through the two parts, and into the piece of furniture, and in all cases
auxiliary screws may be used if desired, in which case the part B, would have holes
such as H, in Fig. 1.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is
1. In furniture castors, the part A, made to cover over the roller, and baring

page_text: a socket to receive the socket piece upon the part B, both said parts being secured
together by a screwed pin C, or by a wood-screw such as J, substantially as herein-
before described and with reference to the drawings.
2. A furniture castor having a part A, with forked arms A³ to carry the roller,
and a part B, fitting into the socket of A, both parts being held together, and
secured to the article of furniture by means of a screw J, with or without auxiliary
screws and substantially as hereinbefore described with reference to Fig. 3 of the
<drawings.
Dated the 8th day of July 1892.
ROBT. F. DRURY, C.P.A.,
Bank Buildings, George Street, Sheffield, Agent for Applicant.