AN IMPROVED ILLUMINATED NIGHT CLOCK
Year: 1870

page_text: LETTERS PATENT to William Robert Lake, of the "International
Patent Office," Southampton Buildings, London, Consulting
Engineer, for the Invention of "AN IMPROVED ILLUMINATED NIGHT
CLOCK." A communication from abroad by Victor Atanas Pierret
and Fritz Borel, of the Firm of Pierret and Company, of Paris, in
the Empire of France.
Scaled the 6th September 1870, and dated the 4th April 1870.
PROVISIONAL SPECIFICATION left by the said William Robert Lake
at the Office of the Commissioners of Patents, with his Petition,
on the 4th April 1870.
I, WILLIAM ROBERT LAKE, of the "International Patent Office,"
Southampton Buildings, London, Consulting Engineer, do hereby
declare the nature of the said Invention for "AN IMPROVED ILLUMINATED
NIGHT CLOCK," a communication, to be as follows:-
The said Invention relates to a special combination of clockwork with
a night lamp or other lighting apparatus constructed and arranged in
such a manner as to render apparent in the night divisions of time
marked upon a globe of a glass or other translucent or transparent
material.

page_text: The said Invention consists in the construction of the clockwork
movement, in the arrangement of the night lamp or other lighting
apparatus, and the combination of the latter with the said clockwork.
In a night clock constructed according to this Invention the clock-
work is supported upon a stand or foot of any suitable form and gives a 5
rotative motion to the entire lamp or lighting apparatus carried thereon.
The wheelwork is so calculated that the lamp makes one complete
revolution in twelve hours; the said lamp preferably carries a globe of
unpolished glass or other translucent or transparent material upon
whose exterior surface is the dial with the usual hourly divisions. 1
Against this globe, but not in contact with it, is an immoveable index
hand or pointer securely fixed upon a plate of the clockwork. This hand
or pointer is so arranged that all the divisions of time are caused by the
motion of the lamp or apparatus to pass successively over the same.
In order that the said Invention may be more fully understood I have 1
given an example thereof in the accompanying Drawing.
Figure 1 is a vertical elevation of the said apparatus, the globe being
in section to show the internal arrangement;. Figure 2 is a plan of the
top of the clockwork.
The position of the clockwork is horizontal, and the pointer a is fixed 2
as herein-before stated. The wheel which controls the lamp forms no
part of the ordinary wheelwork. 6 is a barrel or spring box of ordinary
construction having at one end a wheel c, which gears into another
wheel d fixed on a vertical arborf passing through the centre of the
two plates g; h is a plate or disc carried on the upper end of the arborƒ; 2
i is the lamp or night light supported on the said plate h; j is the globe
with the transparent dial, also supported on the plate h; k is a cover
placed on the top of the globe j. This cover supports a chimney / which
is provided to prevent the flickering of the light. The said cover / is
perforated to permit the passage of a current of air sufficient to prevent 3
the carbonizing of the wick.
By the peculiar arrangement of the wheels of the clockwork the
barrel 6 makes a complete revolution in six hours, while the plate h,
and consequently the globe and dial, make one revolution in twelve
hours. To accomplish this object I form the wheel c with only half as 3
many teeth as the wheel d. By dispensing with the wheel c and placing
a small pinion on the arbor of the pinion of the main wheel I should
obtain the same result. The rotation of the lamp might also be effected

page_text: The
by a pinion keyed on the upper end of the axis of the barrel and gearing
with a toothed wheel or circular rack fixed below the plate h.
escapement is placed on the upper plate. The auchor or pallet is a small
notched cylinder m with two teeth. The escape wheel has teeth cut
on its edge. The bridge o of this wheel serves also to carry one of the
pivots of the pallet arbor p. The pendulum rod 7 passes through the
clock plates.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said William Robert Lake in the Great Seal Patent
Office on the 7th September 1870.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
ROBERT LAKE, of the "International Patent Office," Southampton
Buildings, London, Consulting Engineer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Fourth day of April, in the year
of our Lord One thousand eight hundred and seventy, in the thirty-
third year of Her reign, did, for Herself, ler heirs and successors, give
and grant unto me, the said William Robert Lake, Ier special licence
that I, the said William Robert Lake, my executors, administrators, and
assigns, or such others as I, the said William Robert Lake, my excentors,
administrators, and assigns, should at any time agree with, and no
others, from time to time and at all times thereafter during the term
therein expressed, should and lawfully might make, use, exercise, and
vend, within the United Kingdom of Great Britain and Ireland, the
Channel Islands, and Isle of Man, an Invention for "AN IMPROVED
ILLUMINATED NIGHT CLOCK," a communication to me from abroad by
Victor Atanas Pierret and Fritz Borel, of the Firm of Pierret and Com-
pany, of Paris, in the Empire of France, upon the condition (amongst
others) that I, the said William Robert Lake, my executors or adminis-
trators, by an instrument in writing under my, or their, or one of
their hands and scals, should particularly describe and ascertain the
nature of the said Invention, and in what manner the same
was to
be performed, and cause the same to be filed in the Great Seal Patent
Office within six calendar months next and immediately after the date
of the said Letters Patent.

page_text: NOW KNOW YE, that I, the said William Robert Lake, do hereby
declare the nature of the said 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 accompanying
Drawing, forming a part of this Specification :-
The said Invention relates to a special combination of clockwork with
a night lamp or other lighting apparatus constructed and arranged in
such a manner as to render apparent in the night divisions of time
marked upon a globe of glass or other translucent or transparent
material.
The said Invention consists in the construction of the clockwork
movement, in the arrangement of the night lamp or other lighting
apparatus, and in the means for maintaining the proper relation between
the latter and the said clockwork.
In a night clock constructed according to this Invention the clock-
work is supported upon a stand or foot of any suitable form and gives a
rotative motion to the entire lamp or lighting apparatus carried thereon.
The wheelwork is so calculated that the lamp makes one completo
revolution in twelve hours; the said lamp preferably carries a globe of
unpolished glass or other translucent or transparent material upon
whose exterior surface is the dial with the usual hourly divisions.
Against this globe, but not in contact with it, is an immoveable index
hand or pointer securely fixed upon a plate of the clockwork. This
hand or pointer is so arranged that all the hourly divisions of the dial
are caused by the rotative motion of the lamp or apparatus to pass
successively over the same.
In order that the said Invention may be more fully understood I havo
given an example thereof in the accompanying Drawing.
Figure 1 is a vertical elevation of the said apparatus, the globe being
in section to show the internal arrangement; Figure 2 is a plan of the
top of the clockwork.
The position of the clockwork is horizontal, and the pointer a is fixed,
as herein-before stated. The wheel which controls the lamp forms no
part of the ordinary wheelwork. 6 is a barrel or spring box of ordinary
construction baving on its cover a wheel c, which gears into another
wheel & fixed on a vertical arbor passing through the centre of the
two plates g; h is a plate or disc carried on the upper end of the arborf;

page_text: i is an inner lamp or night light supported on the said plate h; j is the
globe with the transparent dial, also supported on the plate h; k is a
cover placed on the top of the globe j. This cover supports a glass or
chimney which is intended to prevent the flickering of the light. The
said cover k is perforated to permit the passage of a current of air
sufficient to prevent the carbonizing of the wick.
By the peculiar arrangement of the wheels of the clockwork the
barrel makes a complete revolution in six hours, while the plate h, and
consequently the globe and dial, make one revolution in twelve hours.
To accomplish this object I form the wheel c with only half as many
teeth as the wheel d. By dispensing with the wheel c and placing a
small pinion on the arbor of the pinion of the main wheel I should
obtain the same result. The rotation of the lamp might also be effected
by a pinion keyed on the upper end of the axis of the barrel and gearing
with a toothed wheel or circular rack fixed below the plate h. The
escapement is placed on the upper plate. The anchor or pallet is a
small notched cylinder m taking two teeth. The escape wheel n has
teeth cut on its edge. The bridge o of this wheel serves also to carry
one of the pivots of the pallet arbor p. The pendulum rod 7 passes
through the clock plates.
Having thus fully described the said Invention as communicated to
me by my foreign correspondents, I wish it understood that I claim,
the combined clock and lamp or night clock herein above described and
represented with the peculiar construction of clockwork, the arrangement
of the lamp, night light, or other apparatus, and the means whereby the
proper relation is maintained between the latter and the clockwork,
substantially as set forth.
In witness whereof, I, the said William Robert Lake, have hereunto
set my hand and seal, this Seventh day of September, in the year
of our Lord One thousand cight hundred and seventy.
Witness,
E. C. JACKSON.
WILLIAM ROBERT LAKE. (L.S.)