IMPROVEMENTS IN MECHANISM FOR SUPPLYING AIR TO LAMPS
Year: 1884

page_text: PROVISIONAL
DEVIFICATION.
I WILLIAM ROBERT LAKE of the firm of Haseltine Lake & Co Patent Agents
Southampton Buildings in the County of Middlesex do hereby declare the nature
of my Invention for "IMPROVEMENTS IN MECHANISM FOR SUPPLYING AIR TO
LAMPS" to be as follows:-
This Invention relates to mechanism for supplying air to lamps of that class
wherein the necessity for a chimney is obviated by forcing air to the burner in the
required quantity.
Tho said Invention consists partly in the combination in such mechanism, of a
frame and springs arranged outside the said frame for imparting motion to wheels
comprised in said mechanism.
It also partly consists in the combination in such mechanism, of a single shaft
projecting beyond the frame of the mechanism, and springs arranged on the end
portions of the shaft outside the said frame.
It also partly consists in the combination in such mechanism, of a single shaft,
two springs mounted on the said shaft and a stop motion acting in conjunction
with the shaft to prevent the springs from being unwound to such an extent as to
materially weaken the force with which they operate.
It also partly consists in the combination in such mechanism, of a single shaft,
two springs arranged on the said shaft, and an upright shaft whereby the
mechanism while in an elevated position-may be wound from below.
It also partly consists in the combination of a single shaft, springs arranged
thereon, a train of wheels comprising a gear wheel having inclined teeth, a worm
deriving motion from the latter, a chamber communicating with the burner of a
lamp, and a fan arranged in the chamber and deriving a rotary movement through
the agency of said worm.
As the lamp in which the improved mechanism is used may be of ordinary form
and the novel features involve only the mechanism for supplying air thereto I have
not deemed it necessary to describe more than the said mechanism.
The frame of the improved mechanism consists essentially of two side-pieces
which are preferably made of metal and suitable cross pieces, which may also be
advantageously made of metal, connecting them.

page_text: The main shaft or arbor of the mechanism is supported in the sido pieces of the
frame so that it can rotate, and its ends extend considerably beyond the side pieces
of the frame.
Two convolute springs, preferably made of thin bands of steel, are provided.
The inner end of each of these springs is fastened to the main shaft outside one of
the side pieces of the frame and at the outer end to a stud.
The ends, or either end, of the main shaft are, or is, made polygonal or otherwise
adapted to be interlocked with a key whereby it may be turned to wind up the
springs.
On the main shaft is fixed a ratchet wheel which engages with a pawl pivotally
connected to a gear-wheel mounted loosely on said shaft. A spring holds this pawl
in engagement with the ratchet-wheel. Owing to this connection of the gear-wheel
which constitutes the main driver of the mechanism, with the main shaft the said
shaft may be rotated to wind up the springs without causing the rotation of the
gear wheel and yet it is enabled to impart motion to the said gear-wheel when
rotated by the springs.
By arranging the springs outsido the frame of the mechanism I enable them to
be readily reached for cleaning, repairs or replacement by others, without disturbing
tho rest of the mechanism.
On the main shaft is affixed, a bevel gear-wheel which engages with a bevel
gear-wheel mounted on an upright shaft which is journalled in the frame of the
mechanism and projects beyond the bottom of the latter. The lower end of the
upright shaft is adapted to receive a key whereby it may be turned to effect the
winding of the springs. The advantage of this shaft is that it enables the springs
to be wound up from below when the lamp containing the mechanism is used in an
elevated position.
'
On the main shaft is affixed a tooth which operates in conjunction with a wheel
which is pivotally connected by a screw, or an analogous device, with one of the
side pieces of the frame so as to be free to rotate. This wheel has a number of
recesses in its periphery and a blank peripherical space. At each rotation of the
shaft the said tooth enters one of the recesses and turns the wheel far enough for
the said tooth to engage with the next of the recesses at the succeeding rotation of
tho shaft, until finally the tooth comes in contact with the blank space, whereupon
the mechanism is stopped. By employing this stop motion I prevent the springs
from becoming so reduced in power before stopping as to materially reduce the
force with which they supply air to the lamp.
The first mentioned gear wheel engages with a pinion mounted on a pinion
shaft journalled in the side pieces of the frame of the mechanism.
On the pinion shaft is a gear wheel that engages with a pinion mounted on a
second pinion shaft. The latter shaft is journalled in the frame and has also
affixed to it a gear wheel which engages with a pinion mounted on a third shaft
journalled in the frame. This shaft carries a gear-wheel having suitably inclined
teeth to impart motion to a worm on a second upright shaft which is journalled in
the frame and in a chamber. The second shaft is furnished with a fan which is
arranged in the said chamber. The latter is perforated below the fan and at the
upper end communicates with the draft-plate or air distributer of the burner used
in the lamp.
Dated this 10th day of June 1884.

page_text: I, WILLIAM ROBERT LAKE, of the firm of Haseltine, Lake and Co., Patent
Agents, Southampton Buildings in the County of Middlesex do hereby declare tho
nature of my Invention for "IMPROVEMENTS IN MECHANISM FOR SUPPLYING AIR
TO LAMPS" 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 mechanism for supplying air to lamps of that class
wherein the necessity for a chimney is obviated by forcing air to the burner in the
required quantity.
The said Invention consists partly in the combination in such mechanism, of a
frame and springs arranged outside the said frame for imparting motion to wheels
comprised in the said mechanism.
It also partly consists in the combination in such mechanism, of a single shaft
projecting beyond the frame of the mechanism, and springs arranged on the end
portions of the shaft outside the said frame.
It also partly consists in the combination, in such mechanism, of a single shaft,
two springs mounted on the said shaft, and a stop motion acting in conjunction
with the shaft to provent the springs from being unwound to such an extent as to
materially weaken the force with which they operate.
It also partly consists in the combination, in such mechanism, of a single shaft,
two springs arranged on the said shaft, and an upright shaft whereby the
mechanism, while in an elevated position, may be wound from below.
It also partly consists in the combination of a single shaft, springs arranged
thereon, a train of wheels comprising a gear wheel having inclined teeth, a worm
deriving motion from the latter, a chamber communicating with the burner of a
lamp, and a fan arranged in the chamber and deriving a rotary movement through
the agency of said worm.
As the lamp in which the improved mechanism is used may be of ordinary form
and the novel features involve only the mechanism for supplying air thereto, I have
not deemed it necessary to describo more than the said mechanism.
In the accompanying Drawing
Figure 1 is a side view of mechanism constructed according to this Invention. .
Figure 2 is a view of the same taken in a plane at right angles to Figuro 1,
certain parts being shewn in section; and
Figure 3 is a view of a detail.
Similar letters of reference indicate corresponding parts in the several Figures.
The frame A of the improved mechanism consists essentially of two sido picces
which are preferably made of metal, and suitable cross pieces, which may also bo
advantageously made of metal connecting them.
B indicates the main shaft or arbor of the mechanism. It is supported in the
side pieces of the frame so that it can rotate, and its ends extend considerably
beyond the side-pieces of the frame.
C indicates two convolute springs preferably made of thin bands of steel. At
the inner end, each of these springs is fastened to the shaft B outside one of the
side pieces of the frame, and at the outer end to a stud D.
The ends or either end of the shaft B is made polygonal, or otherwise adapted to
be interlocked with a key, whereby it may be turned to wind up the springs C.
On the shaft B is fixed a ratchet wheel D which engages with a pawl D¹
pivotally connected to a gear-wheel E mounted loosely on the said shaft. A
spring a holds this pawl in engagement with the ratchet wheel. Owing to this
connection of the gear wheel E, which constitutes the main driver of the mechanism,
with the shaft B, the said shaft may be rotated to wind up the springs O without
•

page_text: causing the rotation of the gear wheel E and yet it is enabled to impart motion to
the said gear-wheel when rotated by the springs.
By arranging the springs C outside the frame of the mechanism I enable them to
be readily reached for cleaning, repairs, or replacement by others, without disturbing
the rest of the mechanism.
On the shaft B is affixed a bevel gear-wheel F engaging with a bevel gear-wheel
mounted on an upright shaft G which is journalled in the frame of the mechanism
and projects beyond the bottoin of the latter. The lower end of the shaft G is
adapted to receive a key whereby it may be turned to effect the winding of the
springs C. The advantage of this shaft is that it enables the springs C to be
wound up from below when the lamp containing the mechanism is used in an
elevated position.
On the shaft B is affixed a tooth H which operates in conjunction with a wheel I
pivotally connected by a screw or an analogous device with one of the side pieces
of the frame so as to be free to rotate. This wheel has a number of recesses b in
its periphery and a blank peripherical space b¹. At each rotation of the shaft the
said tooth H enters one of the recesses b and turns the wheel I far enough for the
Eaid tooth to engage with the next of the recesses at the succeeding rotation of
the shaft, until finally the tooth comes in contact with the blank space b¹ whereupon
the mechanism is stopped. By employing this stop motion I prevent the springs C
from becoming so reduced in power before stopping as to materially reduce the
force with which they supply air to the lamp.
The gear-wheel E engages with a pinion J mounted on a shaft J¹ journalled in
the side pieces of the frame A of the mechanism.
On the shaft J¹ is a gear wheel J' which engages with a pinion K mounted on a
shaft K. The shaft K' is journalled in the frame A, and has affixed to it a
gear-wheel K which engages with a pinion L mounted on a shaft L' journalled
in the frame A. This shaft L' carries a gear-wheel L³ having suitably inclined
teeth to impart motion to a worm M on an upright shaft M' which is journalled
in the frame A, and in a chamber O. The shaft M¹ is furnished with a fan N which
is arranged in the chamber O. The said chamber is perforated below the fan, and
at the upper end communicates with the draft-plate or air-distributer of the burner
. used in the lamp.
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
I claim in mechanism for supplying air to lamps :-
--
First. The combination of a frame, and springs arranged outside the said frame.
Second. The combination of a frame, the shaft B having its ends extended
beyond the frame, and the springs C arranged on the shaft outside the frame.
Third. The combination of a frame, the shaft B having the springs C mounted
on it, and a stop motion for the said shaft preventing the too great unwinding of
the springs.
Fourth. The combination of the shaft B, the springs C, and the shaft G geared
to the shaft B.
Fifth. The combination of the shaft B, the springs C, the train of wheels
comprising the gear-wheel L³, the shaft having the worm M, the chamber O, and
the fan N.