An Improved Lime Light Lantern for Illuminating Purposes and the like.
Year: 1895

page_text: Date of Application, 10th Sept., 1895
Complete Specification Left, 2nd June, 1896-Accepted, 5th Sept., 1896
PROVISIONAL SPECIFICATION.
An Improved Lime Light Lantern for Illuminating Purposes and
the like.
We WILLIAM BUTCHER and WILLIAM FREDERIC BUTCHER, Dealers in
Photographic Apparatus and HUGH OAKLEY DRAKE Photographic Assistant all of
Tranquil Vale Blackheath in the County of Kent do hereby declare the nature of
this invention to be as follows:-
This invention relates to an improved form of lantern, made entirely of metal.
Supported on a metal stand that will hold the apparatus firmly on to any beam,
joist, tie, chair back, ladder or any object usually found in rooms used for
entertainments. And will yet allow the light to be thrown in any direction either
upwards, as from a floor to a stage, or downwards as from a roof to the stage also
from right to left.
The body of the lantern consists of a cylinder of Russian iron, or other suitable
metal of sufficient diameter inside to take the lens to be used. And long enough
to accomodate the jet at the back of the lens. A slot is cut through half the
diameter to allow the tinters to slide in front of the lens.
The lens is held in position by a flange inside the cylinder about two inches from
the front, against which the back of the lens rests. And is secured by a projection
at the bottom & by a screw passing through the top.
Inside the cylinder or body at the bottom two strips of metal are rivetted to
form grooves that will hold the tray firmly that carrys the jet. On both sides of
the body is a projecting screw fitted with a milled nut for clamping the body at any
angle to the stand.
The stand consists of a metal fork with two prongs upwards, through the end of
The lower
each prong is a hole into which the above two projecting screws fit.
end of the fork fits into a tube or socket that is attached to a strong cramp by
means of a moveable elbow joint clamped by a thump screw. A screw is provided
at the top of the tube or socket that will either fit the fork or allow it to revolve
freely.
The features we claim as our invention are as follows.
A lime light box made entirely of metal.
Its cylindrical form.
The use of a metal stand as described for lime light boxes or optical lanterns.
For either one or more parts or for the apparatus used as a whole.

page_text: t
COMPLETE SPECIFICATION.
An Improved Lime Light Lantern for Illuminating Purposes and
the like.
WILLIAM BUTCHER and WILLIAM FREDERIC BUTCHER both of Tranquil
Vale Blackheath, in the County of Kent, trading as W. Butcher & Son,
Manufacturers of Photographic Apparatus, and HUGH OAKLEY DRAKE, late of
The Vale Blackheath now residing at Quintin Road, Lee in the County of Kent,
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 an improved, form of lantern technically known as a
lime light box, which is used in theatres and other places of amusement where the
stage requires to be brilliantly illuminated. Such boxes are usually made of
wood and are always square, and are very cumbersome and not convenient for
manipulation.
This lime light.box or-lantern is made entirely of metal, and is entirely a new
design, being supported on a metal, stand that will hold the apparatus firmly on to
any beam, joist, tie, chair. back, ladder, steps, or any object usually found in rooms
used for entertainments.. At the same time it will allow the light to be thrown in
any direction either upwards as from the floor to the stage, or downwards as from
the roof to the stage, or at any angle. either from the right or the left.
I will now particularly describe the different portions of the apparatus.
The body A forming the main portion, consists of a cylindrical tube, open at
both ends, made in Russian iron or other suitable metal, of sufficient diameter to
take the lens to be used inside (usually .6. inches. diameter), and long enough to
accomodate the jet (which conveys the gases) at the back of the lens (usually
about 10 to 12 inches long) at one end of the tube, which forms the front, two slots
are cut through half the diameter, to allow various tinters C. C. being placed in
front of the lens, in order that a variety of colours may be thrown upon the object
required to be illuminated.
Immediately behind the slots is placed the lens B. A flange is fixed inside the
cylindrical body in the correct position that is leaving sufficient space between the
back tinter slot and the flange for the thickness of the lens.
Against this flange the back of the lens rests, and is secured in position by a
projection at the bottom, inside of which the lens B is slipped and a thumb
screw D passing through the top of the body which is screwed down, after the
lens B is placed in position.
Inside the cylindrical body A and at the bottom of same two strips of metal are
rivetted (length ways) to form grooves, that will hold the usual lime light tray
firmly and allow the same to be slid backwards and forwards along the body.
.This tray carries the usual upright pin upon which is supported any of the
ordinary pressure jets for producing the lime-light. On each side of the body is
rivetted a projecting screw fitted with.a milled nut E the projecting piece is only
screwed part of the way down, leaving about one quarter of an inch plain, this forms
a pivot on which the body swings in the stand, the pivots are placed in the proper
position to balance the lens, and the milled nuts E when screwed up form a clamp,
to hold the body in any required position.
A loose cowl top is fitted into the top of the body giving the necessary
ventilation to the same, it is supplied loose for the convenience of packing into a
small space.
The stand or support is made in cast metal and consists of three parts, viz. :-
A fork G with two prongs, through the end of each prong is a hole, into which
the two projecting screws on the body slip, the body is thus hung in the fork and

page_text: in this way swings either up or down and when required to be fixed the milled
nuts E on the projecting screws are tightened up. The handle H is about 8 inches
long and is round.
A socket I into one end of which the handle of the fork slides forms the second
piece this fits loosely and by its means the body A may be revolved in any direction
from right to left, a thumb screw is provided so that if necessary the body can be
fixed in any position.
This socket joint also enables the body to be raised or lowered some 6 inches
according to requirements. The other end of the socket forms a hinged elbow
joint with the third piece and is provided with a thumb screw or lever screw J.
This particular movement gives a greater variety of positions in which the
apparatus may be fixed.
A clamp K forms the third piece, the top of same is secured to the bottom of
the socket I by means of the elbow hinge as above described the clamp portion is
the usual arm with thumb screw coming up through the bottom so that by its
means the whole apparatus is fixed to the required support in the room.
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 I
claim is
1. A lime light box made entirely of metal.
2. Its cylindrical form.
3. The use of a metal stand as described for lime light boxes or optical
lanterns.
Tn 1000
WILLIAM BUTCHER.
W. F. BUTCHER.
H. O. DRAKE.