Year: 1888

page_text: I, WALTER HENRY BULPITT trading as Bulpitt & Sons of Camden Street Birming-
ham in the County of Warwick Lamp Manufacturer and Tin Plate Worker 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
statement:-
My invention has for its object improvements in lamps having particular reference
to those lamps which usually rest upon a table or other base and which are always
capable of being moved from place to place either by the use of a handle or otherwise.
Many accidents have ocurred at various times through such lamps being turned over
or accidentally knocked down and this has been frequently the case where there are
children and to meet this difficulty various devices have been invented in order that
the lamp should be immediately extinguished if accidentally thrown over.
Now my invention is intended to more perfectly meet this need with less complication
of parts.
In order that the invention may be clearly understood and more easily carried into
practical effect I have appended hereunto a double sized sheet of drawings upon which
I have illustrated the same by 6 figures thereon.
Figure 1 is a part sectional side elevation of a hand lamp A showing the extinguish-
ing arrangement folded back so that the wick is bare and ready for lighting.
Figure 2 is also a sectional side elevation of a similar lamp showing a modification
of how the extinguisher is operated.
Figures 3 are a broken off front and broken off side elevation of the burner part
showing the mode of securing the burner B to the mouth a' of the reservoir.
Figure 4 is a broken off enlarged side elevation and part section of the extinguisher
of the burner B in its open condition.
Figure 5 is an enlarged side elevation and part section of the same burner with the
extinguisher closed.
Figure 6 is an plan of the same extinguisher in the position as shown at Figure 4.
The hand lamp which I have chosen to illustrate this invention is an ordinary table
lamp consisting of the oil reservoir or main body A the foot a' and the burner part B
with the handle a by which it may be carried from place to place. The extinguisher

page_text: contained inside the burner B and mounted around the wick case is a form well
known to the public and 1 therefore lay no claim to the details thereof, and will only
sufficiently describe it to enable others to understand my invention as it relates thereto.
The main portion of the extinguisher E is formed so as to constitute a cover and two
ends as well as a portion of a side and finishes with two ears e¹ and e' which have
suitable slots e³ to which the mechanism forming my invention is attached. The other
side of the extinguisher is formed by the sliding flap e' which has two horns e³ and e
which enter the holes e' in the main portion. The main portion E turns upon the
pivots which are secured to the ledge e which is soldered or otherwise fastened to
the wick case b¹ and thus as the extinguisher lifted or depressed by the cross bar e¹0
working in the slots e³ in the projecting ears e¹ and e² it is either closed or opened as
may be desired. Now in order to make this extinguisher self-acting I attach to the
burner the spring barrel K in which is mounted the spring piston rod k¹ with the coil
spring screw nut k³ and tapped end k for adjusting the nut 3 and which projects
sufficiently low to rest on the end m¹ of the lever M which is mounted in an oil-tight
chamber P of sufficient size to receive the same. This chamber may be of any con-
venient shape according to the form of the lever used but it is not necessary that it
should occupy much space. This chamber P finishes with the barrel p' which projects
sufficiently upwards to enter the bottom part of the burner b' so as to steady the
spring case K. The piston rod k¹ is connected to a cross bar e¹0 which works loosely
in the slots e aforesaid. The lever M is pivotted at m² to any convenient portion of
the lamp or handle thereof and projects to m³ where it is formed into a suitable shape
to be held by the hand lever N which continues upwards and is formed into a bow or
other convenient shape at n¹ and continues downwards to the pivot n finishing with a
round or circular foot n³ of any convenient shape so as not to scratch or injure the top
of a table or other place where it may be required to stand. Now apart from this
hand lever N and cross lever M the normal condition of the extinguisher would be
a closed one because of the action of the spring 2 in the barrel K but immediately
these levers are mounted into position and the lamp set upon its base the spring
is brought into compression and the rod ¹ is lifted which has the effect of opening the
extiuguisher E. It will now be obvious that immediately the lamp is turned over or
lifted from its base the lever N will be relieved from the natural pressure at n³ and the
extinguisher will be instantly closed by the action of the spring .
Should it however be desired to remove the lamp while still lighted the hand will
enclose the lever N as well as the handle a and thus the lever M would be held in the
position as shown upon the drawing and the lamp would continue to burn. In the
case of the lamp shown by Figure 2 the only difference in the working is that a tube R
is carried through the reservoir part A of the lamp body and a rod S passes up through
this tube meeting the screw nut k³ which is mounted upon the spring rod k¹ so that
when the lamp stands upon its base the end n³ of the lever N supports the said rod
and keeps the spring in compression which maintains the extinguisher E in its open
position. Immediately the lamp is removed such as in the case of its being turned
over the pressure of the rod S against the screw nut is removed and the spring k²
instantly closes the extinguisher. When it is desired to carry the lamp about the room
the hand lever N is enclosed with the handle a² which prevents the spring from
operating and the lamp is maintained in its lighted condition. In order to make the
lamp as light as possible the rod S may be constructed of a hollow tube of tin having
its top end and bottom end if necessary made solid with a suitable plug.
One of the great advantages of the details of my construction is that the burner B
can be removed at any time from the mouth as of the reservoir A and lifted right
away therefrom. For the sake of extra security and so as not to depend entirely upon
friction when they are put together I hinge a thumb latch V to the base of the
burner B which turns under a suitable latch T which is secured to the mouth a³ of
the reservior A. In Figures 3 the latch V is shown locked underneath T. One of
the principal advantages of these improvements is that the extinguisher must always
be closed by the action of the spring barrel K in whatever position the lamp may be
in, other than standing upon its base, that is, unless the lever N is held by the hand.

page_text: 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 :-
First: The improvements in lamps fitted with extinguishers E and operated by a
spring barrel K in combination with the levers M, N, and chamber P and reservoir A
all substantially as and for the purpose herein set forth and shown upon the drawings
by Figures 1, 3, 4, 5 & 6.
Second-The improvements in lamps having extinguishers Ę in combination with
the spring barrel K and tube R and rod S and lever N all operating substantially as
and for the purpose herein set forth and shown upon the drawings by Figures 2, 3,
4, 5 & 6.
Third In lamps which are automatically extinguished when instantly turned over
the use of the spring barrel mechanism K in conjunction with an extinguisher as and
for the purpose herein set forth.
GEORGE BARKER,
77, Colmore Row, Birmingham,
Agent for Applicant.