Improvements in Carbon-holders for Electric Arc Lamps.
Year: 1897

page_text: I, FREDERIC STANHOPE WORSLEY, of 119 Church Lane, Charlton, in the County of
Kent, Electrical Engineer, do hereby declare the nature of this Invention to be as
follows:-
This Invention has for its object to provide means whereby a carbon-holder can be
readily adapted for receiving and holding carbons of different diameters.
According to this Invention I make the carbon-holder with a "permanent" socket
of a size sufficient to accommodate a carbon of the largest diameter applicable for
use in the particular lamp, and I provide for each such holder a socket or bush whose
external diameter is substantially the same as the bore of the "permanent " socket
into which it is fitted and whose bore is of a diameter substantially the same as that
of the next size of carbon to be used in the lamp. A similar socket or bush may be
fitted into this socket or bush for the next size carbon and so on with any number of
such sockets or bushes in accordance with the number of sizes of carbons to be used
in the lamp. Or for each size carbon a socket or bush may be provided with a bore
to fit the carbon and an external diameter to fit the "permanent" socket. The
sockets or bushes may be cylindrical or of any other suitable shape in cross section.
The socket or bushes may be secured in place and the carbons be fixed therein by
any suitable means for example for securing the carbon they may be provided with a
hole through which a pinching screw passes which screw when screwed inwards
through the said hole bears on the carbon to hold it in position and the sockets or
bushes may be held in place by a screw or screws passing through the exterior socket
or sockets and engaging in a recess or recesses in the socket or bush to be held.
Dated this 3rd day of Nov 1807
Improvements in Carbon-holders for Electric Arc Lamps.
I, FREDERIC STANHOPE WORSLEY, of 119 Church Lane, Charlton, in the County of
Kent, Electrical Engineer, do hereby declare the nature of my 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 has for its object to provide means whereby a carbon holder can be
readily adapted for receiving and holding carbons of different diameters. The
accompanying drawing represents in plan partly in section in Figure 1 and in vertical
section in Figure 2 a holder made in accordance with this Invention. Figure 3
shews an inner socket or bush separately.

page_text: According to this Invention the carbon-holder is made with a "permanent" socket A
of a size sufficient to accommodate a carbon of the largest diameter applicable for
use in the particular lamp with which the holder is to be used and for each such
holder there is provided a socket or bush B whose external diameter is substantially
the same as the bore of the "permanent "socket A into which it is fitted and whose
bore is of a diameter substantially the same as that of the smaller size of carbon to
be used in the lamp. If the holder is to accommodate more than two sizes of carbons
a similar socket, or bush, may be fitted into this socket, or bush, for the next smaller
size carbon and so on with any number of such sockets or bushes in accordance with
the number of sizes of carbons to be used in the lamp. Or for each size carbon
a socket or bush B may be provided with a hore to fit the carbon and an external
diameter to fit the "permanent" socket. The sockets or bushes may be cylindrical
or of any other suitable shape in cross section.
The sockets, or bushes, may be secured in place and the carbons be fixed therein
by any suitable means for example for securing the carbon they may be provided with
a hole through which a pinching screw C passes which screw C when screwed
inwards in the screw hole therefor in the permanent socket A passes through the said
hole band bears on the carbon to hold it in position and the socket or bush or sockets
or bushes may be held in place by a screw or screws d passing through a screwed
hole or screwed holes in the permanent socket A and through the other socket or
each of the other sockets, if more than two be used, and engaging in a recess or
recesses in the socket or bush to be held.
Having now particularly described and ascertained the nature of this Inven-
tion and in what manner the samo is to be performed I declare that what I
claim is —
1. A Carbon-holder for electric arc lamps consisting of a "permanent " socket
corresponding to the largest size carbon and provided with a removable socket or
bush or removable sockets or bushes to suit the smaller size carbon or carbons sub-
stantially as herein before described.
2. A carbon-holder for electric are lamps consisting of a permanent socket such
as A and a removable bush or socket or removable bushes or sockets such as B pro-
vided with a hole b for the passage of the screw C which pinches the carbon and with
means for fixing, such as the securing screw or screws d and recess or recesses b
substantially as herein before described.
Dated this 2nd day of December 1807
JOHNSONS & WILLCOX,
47 Lincoln's Inn Fields, London, W.C., Agents.