IMPROVEMENTS IN MODERATOR LAMPS
Year: 1854

page_text: LETTERS PATENT to Alfred Tylor, of Warwick Lane, Newgate Street, in
the City of London, for the Invention of "IMPROVEMENTS IN MODERATOR
LAMPS." A communication.
-
ealed the 25th August 1854, and dated the 7th April 1854.
PROVISIONAL SPECIFICATION left by the said Alfred Tylor at the
Office of the Commissioners of Patents, with his Petition, on the 7th
April 1854.
I, ALFRED TYLOR, of Warwick Lane, Newgate Street, City of London,
do hereby declare the nature of the said Invention for "IMPROVEMENTS IN
MODERATOR LAMPS" to be as follows:-
Heretofore the means of supplying the burners of moderator lamps with oil
(I mean particularly the description of lamps that you have the power of
screwing and unscrewing the burner from the cylinder or body of lamp) has
been by fixing the supply tube in the centre of the plunger, and connecting the
rack for the purpose of winding up the plunger by a shackle to the supply
tube, thereby causing the pull on the rack in raising the plunger to pull the
plunger on one side of the cylinder.
Now the improvements consist in making the centre part of the plunger
moveable by a swivel in the centre, and in fixing the rack for the purpose of
winding up the plunger in the centre of the said swivel. I thereby obtain a
perfect central pull on the plunger instead of, as heretofore, on the side; and in
fixing the supply tube in the side of the same swivel, I get a clear passage for
the oil to the burner; at the same time I maintain the power of screwing and
unscrewing the burner from the cylinder or body of lamp.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Alfred Tylor in the Great Seal Patent Office on the 7th
October 1854.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, ALFRED
TYLOR, of Warwick Lane, Newgate Street, in the City of London, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Seventh day of April, in the year of our Lord One
thousand eight hundred and fifty-four, in the seventeenth year of Her reign,
did, for Herself, Her heirs and successors, give and grant unto me, the said
Alfred Tylor, of Warwick Lane, Newgate Street, Her special licence that I,
the said Alfred Tylor, my executors, administrators, and assigns, or such other's
as I, the said Alfred Tylor, my executors, administrators, and assigns, should at
any time agree with, and no others, from time to time and at all times there-
after 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 "IMPROVEMENTS IN
MODERATOR LAMPS," upon the condition (amongst others) that I, the said Alfred
Tylor, by an instrument in writing under my hand and seal, 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.
NOW KNOW YE, that I, the said Alfred Tylor, do hereby declare the
nature of my said Invention, and in what manner the same is to be performed,
to be particularly described and ascertained in and by the following state-
ment:-
My Invention consists of improvements in moderator lamps; and in order
that my Invention may be fully understood and carried into effect, I will
proceed to describe the Drawings annexed, and the figures and letters marked
thereon. Figures 1 and 2 are elevations of moderator lamps with my improve-
ments attached. A is the cylinder or body of lamp; B, the plunger leather;
C, the rack; D, the pinion by which the rack C winds up the plunger; E,
the supply tube that feeds the burner F with oil; G, in both elevations, is the
swivel in centre of plunger, which is my improvement, and enables me to carry
out my Invention about to be described; H is the screw by which the burner
F is screwed and unscrewed from the body of lamp A; I, I, are two plates of
metal that keep the plunger B to the shape of the cylinder or body A. The

page_text: two plates I, I, have holes through them, likewise the plunger leather B, to
admit the swivel G to fit through them to work round, the joint of which is
made sound by a leather washer or any other suitable material. It will be
seen, by reference to Drawings, that in Figure 1 the swivel G is screwed to the
plates I, I, and the plunger B by a nut screwed, and in Figure 2 a washer
riveted over.
The only difference between Figure 1 and Figure 2 in action
is, that in Figure 1 the swivel turns round independant of the plunger, and is
made tight by a leather washer, and in Figure 2 the bottom plate I is attached
to the swivel G and turns, making the plunger to be its own washer, still
maintaining the central action of the swivel. J is a bridge across the swivel G,
with a square hole to allow the rack to work through, so that the rack C in
the commencement of winding up is independant of the plunger until the
pin K by the rack rising comes in contact with the bridge J, then the plunger
can be wound up. Now it will be seen that the rack C, when the plunger is
wound up, can be depressed to the same extent it rose previous to acting upon
the plunger, so as not to appear through the burner. Now I shall be able to
show the utility of my improvements by the Drawings annexed. By having the
swivel G in the centre of plunger, I am enabled to fix the rack in the centre
of the said swivel, by which I obtain a central pull on the plunger B, instead
of as heretofore on the side, and am likewise able to obtain a more direct
passage of oil to the burner by fixing the supply tube at one side the centre of
swivel, instead of, as heretofore, in the centre of plunger. By these arrange-
ments I am enabled to screw and unscrew the burner from the body of lamp
by the rack C, the supply tube E being fixed in the swivel G, turning round
in the plunger, leaving top plate I and the spring K stationary in cylinder
of lamp.
Having thus described the nature of my Invention, and the manner of per-
forming the same, I would have it understood that what I claim is,―
The mode of combining the parts to produce the actions described as in
respect to Figures 1 and 2.
In witness whereof, I, the said Alfred Tylor, has hereunto set my
hand and seal, this Seventh day of October, in the year of our Lord
One thousand eight hundred and fifty-four.
ALFRED TYLOR. (L.S.)