An Improved Regulator Combined with a Portable Battery for Controlling the Light of Incandescent Electric Lamps Used for Surgical and other Purposes.
Year: 1886

page_text: Date of Application, 7th Oct., 1886.
Complete Left, 18th Dec., 1886.
Complete Accepted, 25th Feb., 1887.
PROVISIONAL SPECIFICATION.
An Improved Regulator Combined with a Portable Battery for
Controlling the Light of Incandescent Electric Lamps Used for
Surgical and other Purposes.
JOHN BRANDON MEDLAND 12 Borough High Street Southwark in the County of
Surrey, Optician do hereby declare the nature of this invention to be as follows:-
My Invention consists in, An Improved Regulator, combined with a portable battery
for controlling the light of Incandescent Electric lamps, used for Surgical, and other
purposes and is carried into effect as follows.
A Box, or Case is provided of sufficient size to contain 2, or 4, or more small sized
cells of the Bichromate, Grove, or other type of primary battery, or the same number
of secondary cells. A wire is led from one pole of either kind of battery to the
regulator, which I prefer to mount upon the top of the box, or case.
This regulator
consists of a square, or round, or other shaped piece of wood, ebonite, or other good
insulating substance, and is fastened in any convenient manner to the top of the box as
described.
Upon part of the insulated substance of the regulator is wound a spiral of Platinum,
or German silver wire of high resistance, one end of which is in connection with one
pole of the battery. Surrounding the high resistance spiral, or encasing it, is a thin
metal tube, or cover, having a slot upon its underside. This tube, or cover is carefully
insulated from the spiral resistance, but is connected to the lead coupled up to lamp.
Upon this metal tube or cover slides a metal ring, or clamp (furnished with a set
screw), which makes good electrical contact with it, this clamp is so formed as to make
a good rubbing contact on its underside with the spiral, which is exposed by reason
of the slot in the cover at this point. The regulation is effected as follows:
The current being switched on, flows through the spiral until it reaches the clamp,
it then traverses the tube, enters the lamp by the lead connected to it, and returns
through the filiament to the opposite pole of the battery. By sliding the clamp along
the tube, or cover, the full length of the spiral resistances can be inserted, and the
light of the lamp cut down to its lowest point; and by reversing the process, the full
luminosity can be obtained. By practice the exact amount of current suitable for the
filiament can be determined, and its rupture avoided.
The lamp can be fastened by any suitable method to the box, or can be mounted
upon any form of holder suitable for Surgical, or other purposes for which a portable
generator is employed.
FRANCIS M. ROGERS,
Applicant's Agent.

page_text: An Improved Regulator Combined with a Portable Battery for
Controlling the Light of Incandescent Electric Lamps Used for
Surgical and other Purposes.
I JOHN BRANDON MADLAND 12 Borough High Street Southwark in the County of
Surrey, Optician 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 consists in, An Improved Regulator combined with a portable battery
for controlling the light of Incandescent Electric lamps used for Surgical and other
purposes. The means I employ for carrying my invention into effect will be readily
understood by reference to the drawing in which
Fig. 1, shews a sectional elevation of the improved regulator mounted upon a
portable battery.
Fig. 2, an outside view of the regulator.
Fig. 3, an end section upon line A. B.
Fig. 4, an end view of Regulator.
The box or case A Fig. 1 may be of any shape sufficiently large to contain 2, 4, or
more cells of the Bichromate, Grove, or other type of primary battery, or the same
number of secondary cells. A wire is led from one pole of either kind of battery
employed to the regulator B, which consists of a square, or round, or other shaped
piece of wood. ebonite or other good insulating substance, and is preferably fastened to
the lid of the box. Upon part of the insulated substance of the regulator B, is wound
a spiral wire C, which may consist of Platinum, or German silver wire of high
resistance one end of this wire may be driven into the insulating substance of the
regulator, and the other is connected to one pole of the battery. Surrounding this spiral
or encasing it, is a thin metal tube, or cover E, slotted along its under side see Fig. 3.
This tube E, is carefully insulated from the spiral (, but is connected up to the lead,
or other connection with the lamp.
Upon this metal tube, or cover slides a metal ring or clamp F, furnished with a set
screw G. this clamp is so formed as to make good electrical contact with the tube E,
and on its underside a rubbing contact with the spiral wire ( which is exposed by
reason of the slot in said tube, or cover.
The regulation is effected as follows. The current being switched on, flows through
the spiral until it reaches the clamp, it then traverses the tube and the lamp by the
lead connected to it, and returns through the filiament to the opposite pole of the
battery. By sliding the clamp F, along the metal tube, or cover, the full length of
the spiral resistance can be inserted, and the light of the lamp cut down to its lowest
point, and by reversing the process the full luminosity can be obtained, consequently,
by experiment the exact current suited to any filiament can be determined and its
rupture avoided. The lamp is shewn mounted upon terminals on the regulator, which

page_text: is shown in Fig. 1. mounted on a box of square form, containing the battery cells. It
may however be mounted in any convenient manner upon any form of box, or be
mounted up in any form of holder suited for surgical, or other purposes with which a
portable generator is used.
Having now particularly described and ascertained the nature of my said Invention,
and in what manner the same is to be performed; I would wish it understood, that I
am aware that a sliding resistance as an independent instrument has been used for
moderating the light of incandescent lamps, and that I lay no claim to such, neither do
I lay claim to any particular arrangement of primary, or secondary battery, or shape
or combination of cells, or case containing them, neither do I bind myself to the exact
shape, or configuration of regulator. What I believe to be novel, and declare that I
claim is
1st. An Improved regulator constructed as described, combined with a portable
battery used for surgical, and other purposes, for the purpose of controlling, or
regulating the light of an Incandescent lamp, or lamps, sustained by the current
derived from such portable battery, substantially as set forth.
2nd. The combination, and use of a slide resistance regulator constructed as described,
with a portable battery, composed of 2, 4, or more primary cells of the Bichromate,
Grove, or other well known type, or with secondary cells substantially as described.
FRANCIS M. ROGERS,
Applicant's Agent.