Lamp Frames for Public or Private Lighting by Gas or other Illuminant.
Year: 1897

page_text: Date of Application, 19th Oct., 1897
Complete Specification Left, 15th July, 1898-Accepted, 19th Oct., 1898
PROVISIONAL SPECIFICATION.
PROVISIONAL SPECIFICATION.
Lamp Frames for Public or Private Lighting by Gas or other
Illuminant.
SAMUEL LINDLEY, Gas Engineer, Gas Works, South Hylton, Sunderland,
Durham, FREDERICK ALEXANDER LINDLEY, Gas Engineer, Gas Works, South
Hylton, JOSEPII EWART LINDLEY, Gas Works, South Hylton, Gas Engineer, do
hereby declare the nature of this invention to be as follows:-
We purpose making patterns of lamp frames, of various shapes and sizes. Then
casting these patterns in cast malleable iron or other compound, or mixture of
metals from which castings of a servicable nature for lamp frames may be made
in sections. We purpose securing these sections by screws, screw bolts, rivets, or
brazing.
We expect by these means to build up a cheaper and more durable lamp than
has hitherto been produced.
SAMUEL LINDLEY.
FREDERICK ALEXANDER LINDLEY,
JOSEPH EWART LINDLEY,
Lamp Frames for Public or Private Lighting by Gas or other
Illuminant.
We, SAMUEL LINDLEY, Gas-works, South Hylton, in the Parish of Ford, near
Sunderland, County of Durham, Gas Engineer, FREDERICK ALEXANDER LINDLEY,
Gas-works, South Hylton, Gas Engineer, JOSEPH EWART LINDLEY, Gas-works,
South Hylton, 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 ascer-
tained in and by the following statement:-
Instead of the lamps made from sheet metal as they are now (and have been for
a long time) in from twenty to thirty different parts, with as many soldered
joints, which soldered joints are often the weakest part of very weak frames instead
of being the strongest. We purpose casting our frames from patterns not requiring
half the number of joints, or parts, and no solder. These castings to be made of
cast malleable iron, cast malleable steel, aluminium, or any suitable alloys.
The enclosed drawings will illustrate the manner the patterns are made, and
show how the different parts are secured together to form the whole lamp,

page_text: Figure 1 is a view of complete lamp, the body of which is formed of four flat
frames. Two like Figure 2 being cast with gibs marked G on, and at right angles
to the edge of the frame, these gibs have holes drilled in them to receive the screw
bolts marked S, B, Figure 1. Fig. 24, is a flat view of one gib. The other two
frames like Fig. 3 are cast with narrow apertures or slots in them see S, Fig. 3.
Each of these four frames has also gibs marked g. Figs. 2 and 3, through which
an hole is drilled for a pin to keep the glass in its place.
On bringing the frames together, the slots marked S, are brought over the gibs
marked G, and the bolts marked S, B, passed through the holes in the gibs, thus
binding the frames firmly together.
Fig. 4 is a plan view of bottom of lamp with hole in centre for gas tube and
apertures which are covered with a perforated material to admit air, or one side
may be fitted with a flap door for lighting. The holes marked H are for the screw
bolts. Fig. 5 is a plan view of top of lamp, and 5* a sectional view of same.
The circular rim shown may be fitted with opal, glass, earthenware, or metal
dome. with a ventilator attached. The holes H, are for the bolts S, B, which bind
the whole together.
The bottom ends of screw bolts are used for fixing the lamp to frog. The pro-
jecting flange at the top is intended to rest on a cradle where such are used. The
door may be cast with lugs on, through which holes are drilled, and hung to one
of the bolts, or may be hinged in the usual manner. The frames of octagon or
hexagon lamps will require a slightly different arrangement, but will be fastened
firmly together by screws, or screw bolts.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that what
we claim is:-
1. Casting lamp frames of the rectilineal order in parts, instead of making them
of sheet metal as heretofore.
2. Bringing and binding the said parts firmly together by means of screws,
screw bolts, or riveting, so as to form a complete frame without solder.
Dated this 14th day of July 1898.
SAMUEL LINDLEY.
FREDERICK ALEXANDER LINDLEY.
JOSEPH EWART LINDLEY.