Year: 1889

page_text: is shown. It is of circular or argand shape. From the interior of the cylindrical
burner, an upright or post B', extends, and upon this post may be mounted the
central light and heat reflecting-core B, which, in this instance is an elongated
cylinder, placed over the post and resting upon a flange thereon. The pencils u, are
suspended above tlie burner B, and carried in the same manner as shown in ngure 6,
in a circular head or trough, the trough being supported centrally upon the post B'.
The burner B, is provided with the ordinary, horizontal, annular flange v, upon
which is mounted the ordinary cone-shaped deflector D; and spring arms d, that. hold
the lamp chimney E. The horizontal flange b, is provided with a series of apertures b',
and a circular, movable plate. F, having corresponding apertures, is arranged
beneath the flange. By turning the plate, the amount of air admitted to the exterior
of the flame may be regulated. Below the plate F, a series of short, horizontal
tubes G, extend from the outer wall z, of the burner, to the interior of the inner
cylinder y, and around the outer wall, is arranged a movable collar or band z,
having apertures corresponding with the tubes G. By moving this band, therefore,
the amount of air supplied to the interior of the burner may be regulated. The
band z, is provided with a projecting spring arm a¹, by which it may be turned, and
this arm has, upon its upper face, a tooth, that engages in notches, in the under
face of the movable ring F. When the ring or band is turned so that the tooth does
not engage the notches f, either may be adjusted separately. By bringing the tooth
into engagement with one of the notches, the movement of the armis z', actuates both
the band z, and the ring F, and, as the parts are adjusted, the supply of air may
be simultaneously increased at the centre and decreased at the exterior, or vice
versa: or both supplies may be increased or decreased together.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed 1 declare that what I
claim is
1. A tubular incandescing pencil, formed of a refractory material, substantially
as set forth.
2. An incandescing element consisting of magnesia or similar refractory sub-
stance, in tubular form.
3. The combination with a gas burner, of a group of tubular incandescing pencils,
arranged or hung vertically above the burner.
4. The combination with a series of incandescing pencils or filaments, of a
centrally arranged reflecting-core of the same or like material.
5. The combination with a group of incandescing pencils or filaments, of a
reflector of like material, arranged in the interior of said group, in such manner
as to reflect the light and heat outwardly.
6. The combination of a circular burner, a circular series of incandescing
elements or pencils arranged above the burner, upon a support extending up from
the center of the burner, and an interior reflecting core arranged within the circle
of incandescent material.
7. The combination of the circular burner having interior and exterior air-supply
inlets, and simultaneously adjustable air-supply regulators, as F and z.
8. The combination of a circular burner. its flange having air-inlets. the movable
ring F, having corresponding apertures, the air-tubes G, leading to the interior of
the burner, the band or collar z, having corresponding apertures, and interlocking
devices, as f, and 2, for locking the ring and band together for simultaneous
adjustment.
Doted this 21st day of July 1880
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