Improvements in or connected with Tri-colour Hand Signal Lamps.
Year: 1899

page_text: Date of Application, 20th Apr., 1899
Complete Specification Left, 19th Jan., 1900—Accepted, 31st Mar.,
1900
PROVISIONAL SPECIFICATION.
Improvements in or connected with Tri-colour Hand Signal Lamps.
I, HENRY GEORGE GASTRILL WILKINS, of Bolingbroke, Ealing Common, W.,
Gentleman, do hereby declare the nature of this invention to be as follows:-
This invention relates to improvements in or connected with tri-colour hand
signal lamps and refers more particularly to the special arrangement of the
moveable parts whereby the different colours may be readily turned on or off by
the operator with one hand either from the top or back handle, and so that any
colour may be retained and locked in the required position; while it may be readily
released and another colour turned on when required.
In carrying my invention into practical effect, I provide an internal drum or
cylinder designed to carry the required different colours, said drum or cylinder
being capable of turning or revolving on pivots projecting from same and working
in the top and bottom of the lamp frame. I further provide, preferably a toothed
wheel, so fixed to the frame of the drum or cylinder, preferably at the bottom,
that its centre shall be the centre of the lamp, and so arranged that it can be
operated by a second toothed wheel or toothed quadrant or sector the centre of
which shall be preferably outside the case or wall of the lamp proper and at the
back thereof. To the centre of this toothed wheel or toothed quadrant or sector
and preferably at right angles, I affix a spindle, axis or rod of any suitable material
and of sufficient size and length so that it may extend up the side of the lamp and
is capable of being bent or carried over the top of same to any convenient position.
This spindle, axis or rod may be furnished with any conveniently arranged
projecting part or parts by means of which it may be turned or rotated, in the
required direction and to the necessary degree. By the movement or rotation
imparted to this spindle, axis or rod, the desired movement is conveyed to the
aforesaid internal drum or cylinder for the purpose of changing the colours as
required. I further provide in any convenient position on the lamp, a clip or
clips, spring or other suitable arrangement or mechanism whereby the internal
drum or cylinder may be locked or retained in the required position.
Dated this 20th day of April 1899.
F. G. CASSELL
(Of Cassell & Co.),
22, Glasshouse Street, Regent Street, London, W.,
Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in or connected with Tri-colour Hand Signal Lamps.
I, HENRY GEORGE GASTRILL WILKINS, of Bolingbroke, Ealing Common, W.,
Gentleman, 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 improvements in or connected with hand signal-

page_text: lamps, and refers more particularly to the special arrangement of the movable
parts, whereby the different colours may be readily turned on or off by the operator
with one hand either by means of a handle arranged at the top or at the back of
the lamp. By the arrangement of the mechanism of this lamp the desired colour
is retained and locked in position while it allows of it being readily released and
another colour turned on when required.
In order that this invention may be fully understood, I will now proceed to
describe same with reference to the accompanying drawings, in which-
Fig. 1 is a side elevation of the lamp.
Fig. 2 is a longitudinal section through same.
Fig. 3 is a cross section, and
Fig. 4 is a detail view, of a part of the operating mechanism.
evonqu
Like letters of reference indicate corresponding parts throughout the-several
views.
In carrying this invention into practical effect, the lamp comprises an outer
cylindrical body or case a, fitted with a hinged front plate b, carrying the lens
and lens-tube c, and a hinged top d, secured in position by means of a suitable
catch, so as to allow of its being opened when required.
These parts are of very ordinary and well known construction and are not
possessed of novel features.
Within the body of the lamp an internal drum or cylinder e is arranged, prefer-
ably constructed of thin sheet metal and strengthened by means of wire rings f,
arranged at the top and bottom thereof. This drum or cylinder is open in the
front for about one third of its circumference to allow of the light clearly
passing through the same while the other two thirds is equally divided into
two parts, each of which is furnished with an opening or window, and behind
each of which a curved plate of suitably.coloured and transparent material g
is arranged within carriers h, soldered or secured in any suitable manner to the
body of the drum or cylinder. To the back of the said drum or cylinder e a stout
wire is soldered, the upper end of which is bent over to the centre and then
upwards at right angles, as at ', where it takes a bearing in a cross piece k,
secured to the hinged top or lid d of the lamp, while at its lower extremity it is
also bent out towards the centre of the lamp, as at 2, and around the top of a
pin, passing through the bottom of the lamp, and in this manner the internal
drum or cylinder is centrally pivotted so as to be free to turn or revolve.
The operating mechanism by means of which the internal drum or cylinder e
is turned or revolved comprises a small pinion m, mounted on the pin 7 and
secured to the arm 2 of the wire i, and a toothed quadrant m¹, the extremity m²
of which passes through the back of the lamp and is secured to an upwardly
projecting spindle or rod n, pivoted to the bottom of the lamp in such a manner
as to be free to turn or revolve. The rod n extends up parallel with the side of
the lamp and is of sufficient length to allow of its being bent over the top, as
at n', where it passes through a suitable opening in the upper handle o, and it is
furnished at a convenient point with a thumb-piece p, by means of which it may
be readily turned or revolved, as required, and to the necessary degree.
The operation of the parts is as follows:
Upon turning the rod or spindle n, either by the right angled arm n¹, or by
the thumb-piece p, in one direction or the other, the toothed quadrant m¹ is also
caused to revolve, which movement is imparted to the pinion m, thereby causing
the inner drum or cylinder e to also turn or revolve and bringing one or other of
the of the transparent coloured plates g between the illuminator and the lens and
lens-tube c, and in this manner a white light or either one of two colours may be
shewn. The internal drum or cylinder e is preferably locked in the required
position upon releasing the operating rod or spindle n by means of a small pin 7,
projecting from the upper extremity of a spring plate q', which is suitable secured
to the back of the lamp. The ping passes through a hole or perforation in the
body of the lamp and in the normal position-viz., when a white light is shewing-

page_text: takes between two stops r, projecting from the outer surface of the drum or
cylinder, while when the said drum or cylinder is turned so as to interpose one
of the coloured plates g between the illuminator and the lens c, it is locked
in position by the pin 9 engaging with a projecting part r, which prevents
movement in one direction, while movement in the other direction is prevented
by the arm of the wire i coming into contact with the body s.
When it is required to release the internal drum or cylinder so as to allow it
to be revolved, the rod or spindle n is drawn back, either by raising the right
angled arm n¹ or by applying pressure to the thumb-piece p, when the spring
plate is also drawn back, freeing the pin q from the projection r or r¹ through
the connecting piece t.
s is a raised body furnished with grooves or slides s' and to which is secured an
illuminator or burning lamp of any suitable and well known construction by
means of a projecting part of the lamp or a plate projecting from the bottom
thereof taking beneath the slides s', and in this manner it can be readily removed
when required.
The lower portion of the rod n and the mechanism for locking the internal
drum or cylinder e in position is enclosed in a metal case y, projecting from the
back of the lamp and to which a second handle z is secured. Stops n² are
provided on the handle o to indicate the central position of the operating rod n.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is;
1. In a signal lamp, the combination with a body a, hinged front b carrying
lens and lens tube c and hinged top d; of a centrally pivoted internal drum or
cylinder such as e furnished with coloured transparent plates such as g designed
or revolved when required, substantially as set forth.
2. The combination with a signalling lamp containing a centrally pivoted
internal drum or cylinder; of operating mechanism consisting of a pinion such
as m and a toothed quadrant such as m³, an operating rod or spindle n furnished
with right angled arm n' and thumb-piece 2, substantially as set forth.
3. The combination with a signalling lamp containing a centrally pivoted
internal drum or cylinder designed to be turned or revolved by a pinion such
as m, and quadrant such as m' through an operating rod or spindle n by its right
angled arm nor thumb-piece p; of locking mechanism comprising a spring
plate q', projecting pin q passing through the the back of the lamp and engaging
with stops r, r; and a connecting piece t, substantially as set forth.
4. The improvements in signalling lamps consisting in the arrangement of a
centrally pivotted internal drum or cylinder such as e carried by the right angled
extensions and 2 of the wire i, furnished with a front opening, and side open-
ings covered by transparent coloured plates such as and caused to turn or
revolve by a quadrant such as m¹ engaging a pinion such as m and turned by an
operating rod n through the right angled arm or thumb-piece p and locked
in the required position by a ping projecting from the spring plate ' passing
through the back of the lamp and engaging stops r, rl, and operated through the
connection piece t, the whole combined, arranged and operated, substantially as
herein described and shewn in the accompanying drawings.
Dated this 18th day of January 1900
F. G. CASSELL
(Of Cassell & Co.),
22, Glasshouse Street, Regent Street, London, W.,
Agent for the Applicant.