An Improved Roller Castor Used in Household Furniture and for other Purposes.
Year: 1887

page_text: Date of Application, 25th June, 1887
Complete Left, 23rd Mar., 1888
Complete Accepted, 27th Apr., 1888
PROVISIONAL SPECIFICATION.
An Improved Roller Castor Used in Household Furniture and for
other Purposes.
I, EDWARD BULL, of Clare Hall Road, Halifax, Yorkshire, Civil Engineer and
Surveyor, do hereby declare the nature of this invention to be as follows:-
My invention has reference to a new and improved construction of roller castor, to
be used in connection with household furniture, pianos, bedsteads, and for other
purposes, the object of my invention being to produce a castor on the roller principle,
where the weight of the said furniture or other body is over the centre of the roller,
and not on one side, as is now the case.
In carrying out my invention I place the roller upon a horizontal pin or stud.
which roller is carried by a suitably shaped bracket provided with a stud or pivot
arranged at a position above the centre of the roller. The roller and its carrier are
inserted in a cup with the pivot working within a cavity or other surface, all arranged
in such a manner that the weight of the roller rests upon the pivot, so that when the
furniture requires to be moved in another direction the roller will adjust itself to the
required position, and this takes place with the least possible amount of friction.
The roller and its carrier are kept within the cup by a screwed cap.
By constructing a castor according to my invention they can be made to readily
adjust themselves to any altered position of the furniture.
TL than at Tune A D 1887
TASKER & CROSSLEY,
Halifax, Agents.

page_text: COMPLETE SPECIFICATION.
An Improved Roller Castor Used in Household Furniture and for
other Purposes.
I, EDWARD BULL, of Clare Hall Road Halifax, Yorkshire, Civil Engineer and
Surveyor 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 :-
My invention has reference to a new and improved construction of roller castor to
be used in connection with household furniture, pianos, bedsteads, and for other
purposes, the object of my invention being to produce a castor on the roller principle,
where the weight of the said furniture or other body is over the centre of the roller,
and not on one side, as is now the case.
In order that my invention may be more fully understood, I will now make
reference to the accompanying sheet of Drawings, wherein Fig. 1 is elevation of a
castor constructed according to my invention, Fig. 2 opposite view of same, and
Fig. 3 section thereof, shewing the internal parts more clearly. a is the ordinary
roller free to revolve upon a stud b carried by a bracket c, the upper end of which
bracket is suitably shaped to work like a pivot in a cavity formed in the shell d.
The upper end of the bracket c is also grooved for the reception of pins e which pins
not only support the bracket so as to prevent its falling out, but the bracket is free to
revolve on the said pins, so that whilst the roller a is free to revolve in one direction,
the bracket c is free to revolve on its pivotted end at right angles thereto. Instead of
the bracket c being kept within the shell d by the pins e, a cap may be screwed on the
bottom of the said shell so as to keep the bracket from falling out, as will be easily
understood.
By constructing castors as above described and shewn in the Drawings, they will
be found to readily adjust themselves to any altered position of the furniture to which
they may be attached.
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 1
claim is :-
Firstly In castors, the combination of a roller such as a with a pivotted bracket
such as b for purposes substantially as described and shewn in the Drawings.
Secondly-In castors, the arrangement substantially as herein shewn and described
whereby a roller, whilst free to revolve upon its own axis, receives rotary motion at
right angles thereto in manner described.