A New or Improved Attachment for Incandescent Gas-burners.
Year: 1896

page_text: Date of Application, 15th pr., 1896
Complete Specification Left, 15th Jan., 1897-Accepted, 13th Mar., 1897
PROVISIONAL SPECIFICATION.
A New or Improved Attachment for Incandescent Gas-burners.
I, CHARLES HOWARD of 12 Mosedale Street, Camberwell, London S.E., Gas
Engineer, do hereby declare the nature of this invention to be as follows:-
My invention has for its object to provide a means for the more even distribution
of the necessary updraught in incandescent gas burners, and for preventing
boisterous winds or decided draughts from distorting the flame, and the consequent
rupture of the incandescent mantle as obtains in such burners as at présent made
and used.
For the purposes of my invention I cast, blow or otherwise produce of any kind
of crystal or other perfectly transparent glass, a cone or cup which may vary in
size to suit particular burners, the said cone or cup being so shaped as to be easily
seated upon and within the chimney gallery and surrounding but not in actual
touch with the burner, a sufficient space existing between these to permit an upward.
passage of evenly distributed air close to and all round the burner.
The upper outer edge of the said cone would be so shaped as to permit the
chimney to be seated thereon, while the under surface of the same may be hollowed
or tapered outwardly so as to present a large surface for the collection of air and
the concentration of same around the burner.
Dated this 15th day of April 1896.
GEO. THOS. HYDE,
1 Broad Street Buildings, London, E.C., Agent for the Applicant.
A New or Improved Attachment for Incandescent Gas-burners.
I, CHARLES HOWARD of 12 Mosedale Street, Camberwell London S.E. Gas
Engineer, do hereby declare the nature of this 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 relates to an improved transparent glass attachment for
incandescent gas-burners, and has for its objects to provide a means for more
evenly distributing the necessary updraught around the burner, and for preventing
sudden winds or decided draughts from distorting the flame and the consequent
rupture of the mantle as obtains with such burners as at present made and used,
and this without causing a downward shadow as in similar devices made of metal
and other opaque substances.
In order that my invention and the manner of its application to such burners
may be fully understood I have hereunto appended a sheet of drawings, of
which,
Figs. 1 and 2 are a perspective view and central vertical section of my said
attachment substantially as I prefer to construct the same.
Fig. 3 is an elevation of such a burner with my improved attachment in position
thereon.

page_text: Fig. 4 is a view similar to Fig. 3 but with my said attachment and the chimney
and globe gallery of the burner in section.
Fig. 5 is a top plan of my attachment and the burner of the lamp only,
illustrating the approximate size of the space I prefer shall exist between the one
and the other.
Fig. 6 is an under plan view of Fig. 5 with the lower end of the burner tube in
section.
For the purposes of my invention I cast, blow or otherwise produce of crystal or
other perfectly transparent colorless or tinted glass a cone or bottomless cup A, the
inner surface of the wall of which may be, and preferably would be perfectly
vertical, as shown in Figs. 2 and 4, so as to be perfectly parallel with the sides of
the burner of the lamp when in position thereon. The outer surface of the sides
of AI prefer shall be slightly tapered or coued as shewn by e in Fig. 4 in order
that the lower end may be slightly thicker that the upper, and I may arrange that
the said outer surface may be perfectly plain, or ribbed or otherwise ornamented
as may be desired. Upon the lower end of the said cone or cup 1 provide a
flange B, the outer diameter of which is such as to permit this to be easily seated
upon and within the chimney gallery C of the burner as shewn in Fig. 4, the
width of the said flange B being such as to permit the ordinary chimney D to rest
thereon as shewn in the same figure.
By reference to Fig. 6 it will be seen that the outer diameter of the flange B is
that shewn by a while its inner diameter is that shewn by b, the approximate size
of the opening at the bottom of the gallery C being that shewn by the dotted
circle c, this being the space provided in such burners for admitting air to the
burner to support combustion, and this space, while larger than that necessary for
this purpose, has been found indispensable in order to prevent a downward shadow
and consequent obstruction of the light. It will therefore be understood that by
the application of my invention I reduce the diameter of the said space c by the
difference between this and the diameter of B at b, the space between the latter
and the burner tube E being ample for admitting the necessary air to the burner F,
while the close proximity of the upper surface of A to the said burner concentrates
the updraught and brings this closer to the burner and ensures a steady and even
light, and by thus narrowing the diameter of the said air inlet from c to b without
obstructing the downward passage of the light I materially reduce the possibility
of sudden winds, or decided draughts arising from persons or objects passing
rapidly beneath the burner, from distorting the flame or rupturing the mantle.
It may be found advantageous in certain atmospheres to slightly increase the
size of the opening at the lower end of the cone A, in which case I provide a
rebate or semi groove d in this, as shewn in Figs. 2, 4 and 6, or in lieu of d I may
form the inner surface of A larger at the bottom than at the top or in other words
tapered outwardly, and by reason of the tapered or coned formation of the outer
surface of A, chimneys of varying cross sectional diameter may be used, the lower
end of this resting upon any part of the outer surface of A.
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,
In combination with an incandescent gas burner, the employment of a transparent
glass cone or cup such as A, having a broad bottom flange B, adapted to rest upon
and within the chimney gallery of the burner, and receive and hold the chimney D
substantially as and for the purposes herein described and shewn by the
accompanying drawings.
1007
GEO. THOS. HYDE,
1 Broad Street Buildings, London, E.C., Agent for the Applicant.