Improvements in or relating to Gas Lamps.
Year: 1895

page_text: Date of Application, 16th. Aug., 1895-Accepted, 7th Dec., 1895
Improvements in or relating to Gas Lamps.
1, WALTER JOHN THOMAS, 16 Cuthill Road Denmark Hill S.E. Gas Engineer,
do hereby declare the nature of this invention aud in what manuer the same is to
be performed, to be particularly described and ascertained in and by the following:
statement
This invention relates to gas lamps and consists in certain improvements, to be.
hereafter fully described & by which a better light is obtained and at the same
time giving more effectual ventilation.
. In order that iny invention may be fully understood I now refer to the annexed
drawing in which
Figure 1. is a sectional elevation of my invention.
Figure 2. is a sectional elevation of a modified arrangement.
Figure 3 further modified arrangement in sectional side elevation.
Figure 4 vertical section of modified form of chamber for preventing the entrance
of deposits to the burner.
Referring to Figure 1. a are the burners which are carried by the tubes b which
are in connection with the gas supply which passes through the main pipe c and.
thence to the branch pipes d of which there may be a convenient number. ⚫ is the
chamber or pipe which supplies jets a. f is a chamber having the baffle plates g & h
for preventing the deposits of carbon & the like from being carried into the
burners or jets a. When desired I sometimes employ a chamber of the con-
struction shown in Figure 4 in which the perforated diaphragms or baffle plate
prevents the return of deposits to the burners. The course of the fumes or
gases is clearly shown by the arrows, cold air entering the cone u, v and
between the cones p, o, n, forming the flues for the passage of the fumes and
gases. By the passage of a certain amount of heated air and fumes or gases.
over both sides of the reflector dome ; the same is more equally heated and
cracking of the enamelling of same is prevented. I sometimes find it convenient.
to employ a regulating valve at the points r and g of any suitable form. m is a
baffle plate placed over the aperture w in the dome or reflector j. In this case
two separate rows of burners are shown but I may if desired employ more than
two rows upon the same principle.
Referring to Figure 2. In this case the dome or reflector j has the aperture a & y
and also the baffle plate z the course of the fumes or gases being again shown by
the arrows. In this case the supply pipe c is closed or plugged at 1, the pipe 2:
being employed to convey the gas supply. The direction of which is shown by the
arrows 5; this pipe having a tap or valve so that the supply may be regulated as
desired, and either set of burners may be employed either the outer or inner circle
of burners, or both as required.
Referring to Figure the dome or reflector j is provided with an outer
casing so as to form a chamber for containing heated air so as to maintain
the dome or reflector j at an equal temperature on both sides, apertures 4 being
provided for the passage of the fumes or gases.
Referring to Figure 4. 5 & 6 are two rings or segments which are secured
together by any suitable means. is a baffle plate which is perforated at 9 so that
any deposits of solid matter will be retained therein & prevented from entering the
burners or jets.

page_text: In some cases I find it convenient to employ a cone surrounding the supply
pipe c, in place of the cone a, said cone being closed instead of open as at u and
having apertures therein for the entrance of air or gases.
I may if desired employ a cover or casing upon the dome or reflector, a space
being left between the said dome or reflector & the casing containing air which
will become heated when the lamp is in use and thus prevent the cracking of the
enamel on the dome or reflector through sudden or unequal cooling.
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 :-
1. The combined construction and arrangement of the various parts substantially
as described and shown herein.
2. In gas lamps of the class herein described, in combination, one or more domes
or reflectors which are heated by the flame of corresponding gas jets with or
without baffle plates placed over apertures in said dome or reflector, cones forming
passages or flues p, o, n, for the exit of fumes and gases cones & k forming
passages or flues for the entrance of cold or heated air, to the flames or jets a
chamber having a baffle plate or plates for preventing the passage of solid matter
to the burners or jets substantially as herein described & illustrated.
3. In domes or reflectors for gas lamps, a covering or casing upon said dome
forming a chamber or receptacle for air which when the lamp is in use prevents
the sudden and unequal cooling of said dome or reflector.
Dated this 12th day of August 1895.
E. EATON,
Agent for Applicant.