A New or Improved Construction of Ball Castors for Furniture and the like.
Year: 1898

page_text: Date of Application, 19th Dec., 1898
Complete Specification Left, 19th Oct., 1899-Accepted, 19th Dec., 1899
PROVISIONAL SPECIFICATION.
A New or Improved Construction of Ball Castors for Furniture
and the like.
We, JULES HIPPOLYTE CORTHÉSY, of 83, Newman Street, Oxford Street, London,
W., Journalist, and EDWIN PERCY HASLAM, of 115, Fleet Street, in the City of
London, Journalist, do hereby declare the nature of this invention to be as
follows:-
This invention relates to a new and improved construction of ball bearing
castors for furniture or the like.
The bearing or ground portion of the castor is broadly a sphere with two axes
of rotation supported in arms of the castor attachment plate or attachment socket
piece or centre screw pin serving as the attachment of the castor to the article
of furniture or otherwise the article to be supported.
The said arms or a half cup forming or affording two points of support for
axle studs serve as bearings therefor.
The axle studs constitute portions of a circular plate of diameter equal to that
of the ball or sphere which is to form the supporting runner proper of the castor.
The said circular plate may be made with a recessed or cupped concentric
grove on each side face thereof to serve as ball races for a set or sets of ball
bearings.
The sphere or ball of the castor consists of two hemispheres or portions and
are mounted upon an axle or studs forming an axle passing through and at
right angles to the centre plate to hold said hemispherical portions securely
together, but leaving them free to run upon said axle, and with the flat sides
face to face against and with the circular supporting plate and with the balls
of the bearing intermediately disposed in the ball races between the said hemi-
spherical parts and the circular plate.
The two hemispherical portions are not quite hemispheres, in as much as, the
thickness of the supporting plate constitutes a portion of the full sphere or ball.
The mounting of the studs of the supporting disc constituting the primary
axle is made upon a line obliquely to the horizontal to afford a compound action
of the hemispherical portions and of the complete sphere or ball of the castor.
When required additional rollers may be placed between the supporting plate
faces and the flat surfaces of the hemispherical portions to distribute the
pressure.

page_text: A New or improved Construction of Ball Castors for Furniture
and the like.
We, JULES HIPPOLYTE CORTHESY, of 83, Newman Street, Oxford Street, London,
W., Journalist, and Enwix PERCY HASLAM, of 115, Fleet Street, in the City of
London, Journaust, 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 a new or improved construction of ball bearing
castors for furniture and the like.
The bearing or ground portion of the castor is broadly a sphere with two
axes of rotation, (i.e. two trunnions or studs) supported in arms of the castor
attachment plate or attachment socket piece or centre screw pin serving as the
attachment of the castor to the article of furniture or otherwise the article to be
supported.
The said arms or a half cap forming or affording two points of support for
axle studs, serve as bearings therefor.
The axle studs constitute portions of a circular plate of diameter nearly equal
or equal to that of the ball or sphere which is to form the supporting runner
proper of the castor.
The said circular plate may be made with a recessed or cupped eccentric
groove on each side face thereof, to serve as ball races for a set or sets of ball
bearings.
The sphere or ball of the castor consists of two hemispheres or portions and
are mounted upon an axle, or studs forming an axle, passing through and at
right angles to the centre plate, to hold said hemispherical portions securely
together but leaving them free to run upon said axle and with the flat sides
face to face against and with the circular supporting plate and with the balls
of the bearing intermediately disposed in the ball races between the said hemi-
spherical parts and the circular plate.
The two hemispherical portions are not quite hemispheres in as much as the
thickness of the supporting plate constitutes a portion of the full sphere or ball.
The mounting of the studs of the supporting disc, constituting the primary
axle, is made upon a line obliquely to the horizontal to afford a compound action
of the hemispherical portions, and of the complete sphere or ball of the castor.
When required additional rollers may be placed between the supporting plate
faces and the flat surfaces of the hemispherical portions to distribute the
pressure.
In order that this invention may be well understood and be carried into
practice there is hereunto annexed a sheet of drawings and the same will be
referred to in the following more particular description by figures and letters,
like letters referring to similar parts throughout.
In Fig. 1, is shown in vertical partial section a fitting of castor according to
this invention, the trail piece being of somewhat cup like form.
As shown this terminates upward in an attachment plate A, fitting into a
recessed socket piece at B; between the plate C, of the socket piece are ball
races for bearings I). E is a central pin passing through plates A, and C, upward
into the material F', of the article of furniture.
It is to be understood that this method of attachment of the trail piece need
not always be followed.
Fig. 2 shows detached in face view but partly in section, the double hemi-

page_text: spheres a, with which together with the supporting axle plate b, forms the
spherical bearing or ground portion of the castor.
Fig. 3 represents in face view, detached, the axle supporting plate, the
trunnions c, whereof will be supported in the ends d, of the arms of the trail
piece as shown in Figs. 1 and 4; the points of support c, being mounted in a
line obliquely to the horizontal, as shown it is an angle of 60° but this may be
varied as for instance to an angle of 45°.
Fig. 4, is an under view of Fig. 1, the two hemispherical portions of the
ball being removed from the supporting axle plate b, but indicated by dotted lines.
Fig. 5, shows in partial section, a supporting ball composed of a supporting
axle plate and two hemispherical portions fitted with ball bearings the collars k¹,
being either fast or loose on the axle k.
Fig. 6 represents a face view of the supporting axle plate, with recessed spaces i
therein to receive rollers, against which the flats of the semi-spherical portions
will bear, and work on the binding axle k.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what
wo claim is :-
The new or improved construction of ball castors for furniture and the like,
constructed combined and operating as and for the purpose herein described
in reference to and shown by the respective figures of the drawings.
Dated this 13th day of October 1899.
For the Applicant,
WALTER A. BARLOW,
Consulting Engineer and Patent Expert,
306, High Holborn, London, W.C.