Improvements in Swing Joints or Ceiling Connections for Carrying Suspended Electric Light Fittings.
Year: 1898

page_text: Date of Application, 27th Apr., 1898
Complete Specification Left, 27th Jan., 1899-Accepted, 1st Apr., 1899
PROVISIONAL SPECIFICATION.
Improvements in Swing Joints or Ceiling Connections for Carrying
Suspended Electric Light Fittings.
We, VERITYS LIMITED, and PERCY GARNISS EBBUTT, both of Plume Works,
Aston, Warwickshire, Electrical Engineers, do hereby declare the nature of this
invention to be as follows:-
This invention has for its object the production of a simple, effective, and cheap
method of suspending electric light fittings in such a manner that they shall always
hang perpendicularly and be free to rotate through a certain angle in either
direction, or swing through a certain angle in any direction.
In carrying out this invention we provide a ball-joint consisting of a flange plate
or fixing plate having one part preferably of a hemispherical or cup-shape. In this
said cup-shaped portion we provide a smoothly turned or ground in half ball or
other suitably shaped metal piece which is either partly cut away or provided with one
or more projections which engage with one or more projections, on the inner side of
the cup-shaped plate; or we may provide the half ball with projections which shall
move in holes or recesses in the cup-shaped plate, thus preventing the half ball
from rotating through a complete circle and thereby twisting the wires.
1 1000
Improvements in Swing Joints or Ceiling Connections for Carrying
Suspended Electric Light Fittings.
We, VERITYS. LIMITED, and PERCY GARNISS EBBUTT, all of Plume Works,
Aston, in the county of Warwick, Electrical Engineers, 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, reference being had to
the drawings accompanying this specification and to the figures and letters shewn
thereon:-
Our present invention has for its object the production of a simple, effective and
cheap method of suspending electric light fittings in such a manner that they shall

page_text: always hang perpendicularly and be free to rotate through a certain angle in either
direction or to swing through a certain angle in any direction.
Figure 1. Represents a sectional view.
Figure 2. A plan.
Figure 3. Represents an alternative method, sectional view.
Figure 4. Plan of same.
In carrying out our invention we provide a ball-joint consisting of a flange plate
or fixing plate (A) having one part preferably formed of a hemispherical or cup
shape (A¹). In this cup shaped portion we provide a smoothly turned or ground
'n half ball or other suitably shaped metal piece (B) which is either partly cut away
or provided with one or more projections (C) which engage with one or more
projections (D) on the inner side of the cup portion of the flange plate or fixing
plate; or we may provide the half ball or metal piece (B) with projections (C¹)
Figures 3 and 4 which shall move in holes slots or recesses (DI) in the cup portion
of the flange plate or fixing plate, in either case the half ball or metal piece (B) is
prevented from rotating a complete circle round the cup (A³) and thereby twisting
the wires.
Modifications to the above may be effected without departing from the essential
features of our invention.
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
we claim is:-
Firstly. In swing joints or ceiling connections for carrying suspended electric
light fittings, the improvements consisting of the formation and arrangement of
flange plate or fixing plate (A) and the formation and arrangement of a half ball
or other suitably shaped metal piece (B) said metal piece having projections (C)
thereon which engage a projection or projections (D) all operating in combination
and for the purpose substantially as described and illustrated in Figures 1 and 2
of the drawings.
Secondly. In swing joints or ceiling connections for carrying suspended electric
light fittings, the improvements consisting of the formation and arrangement of
flange plate or fixing plate (A) and the formation and arrangement of metal piece (B)
having projections or flanges (C¹) thereon which engage slots or recesses (1)¹) the
parts (A) and (B) operating in combination as and for the purpose herein described
and illustrated in Figures 3 and 4 of the drawings.
Dated this 26th day of To 1800
EDWD. J. PAYNE & SON,
Warwick Chambers, 104, Colmore Row, Birmingham.
Patent Agents for the Applicants.