IMPROVEMENTS IN THE CONSTRUCTION OF THE METALLIC FRAMES OF HALL LAMPS AND OTHER LAMPS to bo as follows:-
Year: 1884

page_text: WO WILLIAM JOHN LOVETT of College Works, Summer Hill Birmingham in the
County of Warwick Lamp and Gas Fitting Manufacturer and FRANK WILLIAM
EVANS of N° 21 George Street West, Birmingham aforosaid Manager of Works do
hereby declare the nature of the said Invention for "IMPROVEMENTS IN THE
CONSTRUCTION OF THE METALLIC FRAMES OF HALL LAMPS AND OTHER LAMPS
to bo as follows:-
"
Our Invention has reference principally to such hall and other lamps as have a
square or rectangular figure in plan, but our Invention may also be applied to
lamps having other shapes.
Our said Invention consists in constructing the junctions of the bars of which
the metallic frames of the said lamps are made or built up in the manner
herein after described.
By constructing the junctions of the bars of which the said frames are made
according to our Invention the unconnected bars may be packed for transit or
storage and when required may be readily connected together for forming the
lamp frame. Further, the ordinary soldering of the joints is dispensed with and
increased strength in the junctions of the bars obtained.
We construct the frames of the lamps of a series of nearly flat horizontal bars
and a series of vertical angle bars. Near the end of each of the horizontal bars of
the frame, wo form two (or more) holes and near the end of each web of the
vertical angle bars we form two (or more) screwed holes. The holes in the
horizontal bars and those in the vertical bars are at the same distances apart and
are so arranged that when the ends of the horizontal bars are placed against the
webs of the vertical angle bars, the two sets of holes in the horizontal and vertical
bars coincide.
In order to secure the horizontal bars to the vertical bar where they join, we use
an angular junction piece or clip of a size and shape suitable to embrace the ends
of the two horizontal bars situated at right angles to one another. Each web of
the angular junction piece or clip has two (or more) plain or unscrewed holes
corresponding in position with the holes in the horizontal and vertical bars..
After having arranged the junctions of the horizontal and vertical bars in their

page_text: proper relative positions and placed the angular junction piece or clip in its place
so that the holes in it coincide with those in said horizontal and vertical bars,
screw pins are passed from the outside of the bars into the coincident holes and
screwed into the screwed holes in the vertical angle bar. In this way the several
junctions of the bars are made and the frame of the lamp built up. The junctions
are much stronger than those produced by soldering and as the unconnected bars
of the lamp frame can be packed into a flat parcel, great facility for their transit
and storage is obtained.
Dated this 19th day of January 1884
We WILLIAM JOHN LOVETT-of-College-Works, Summer Hill, Birmingham in
the County of Warwick Lamp and Gas Fitting Manufacturer and FRANK WILLIAM
EVANS. of No 21 George Street West, Birmingham aforesaid, Manager of Works
-do-hereby-declare-the-nature of our Invention-for-IMPROVEMENTS IN THE
CONSTRUCTION OF THE METALLIC FRAMES OF HALL LAMPS and other LAMPS™”-
and in what manner the same is to be performed to be particularly described
and ascertained-in and by the following statement
Our Invention has reference principally to such hall and other lamps as have a
square or rectangular figure in plan but our Invention may also be applied to
lamps having other shapes.
Our said Invention consists in constructing the junctions of the bars of which
the metallic frames of the said lamps are made or built up in the manner herein
after described.
By constructing the junctions of the bars of which the said frames are made
according to our Invention the unconnected bars may be packed for transit or
storage and when required may be readily connected together for forming the lamp
frame. Further the ordinary soldering of the joints is dispensed with and increased
strength in the junctions of the bars obtained.
Wo construct the frames of the lamps of a series of nearly flat horizontal bars
and a series of vertical angle bars. Near the end of each of the horizontal bars of
the frame we form two (or more) holes and near the end of each web of the vertical
angle bars we form two (or more) screwed holes. The holes in the horizontal
bars and those in the vertical bars are at the same distances apart and are so
arranged that when the ends of the horizontal bars are placed against the webs of
the vertical angle bars the two sets of holes in the horizontal and vertical bars
coincide.
In order to secure the horizontal bars to the vertical bar where they join, we use
an angular junction piece or clip of a size and shape suitable to embrace the ends

page_text: of the two horizontal bars situated at right angles to one another. Each web of
the angular junction piece or clip has two (or more) plain or unscrewed holes
corresponding in position with the holes in the horizontal and vertical bars. After
having arranged the junctions of the horizontal and vertical bars in their proper
relative positions and placed the angular junction piece or clip in its place so that
the holes in it coincide with those in the said horizontal and vertical bars, screw
pins are passed from the outside of the bars into the coincident holes and serowed
into the screwed holes in the vertical angle bar. In this way tho several junctions
of the bars are made and the frame of the lamp built up. The junctions are much
stronger than those produced by soldering and as the unconnected bars of the lamp
frame can be packed into a flat parcel great facility for their transit and storage is
obtained.
Figure 1 of the accompanying Drawing represents in elevation and plan the
metallic frame of a square hall or other lamp constructed according to our Invention;
Figure 2 represents in side elevation and plan one of the vertical angle bars of the
framo detached; Figure 3 represents in side elevation and edge view, one of the
upper horizontal bars of the frame detached; Figure 4 represents in side elevation
and edge view one of the lower horizontal bars of the frame detached; Figure 5
represents in front elevation and edge view one of tho angular junction pieces or
clips detached; Figure 6 represents in horizontal section and Figure 7 in vertical
section the junctions of two of the sides of the lamp frame.
Figures 2, 3, 4, 5, 6 and 7 are drawn of the full size: a, a are the nearly flat
bars constituting the horizontal parts of the frame and b, b are the vertical angle
bars to which the horizontal bars a, a aro joined. Those horizontal bars a, a
which form the upper part of the lamp frame may have any desired ornamental
design or pattern given to them; or all the horizontal bars may be made
ornamental.
c, c are the angular junction pieces or clips. Near each end of the horizontal
bars a, a is a hole d and near the end of each web of the vertical angle bars b, b is
a screwed hole e. Or each end of the horizontal bars a, a and each web of the
angle bars b, b may have two or more holes of the kinds described made in them.
Holes are also made in tho angular junction pieces or clips c, c. The ends of
the angular bars b b are provided with pairs of beadings g, g and the longitudinal
edges of the horizontal bars a a are provided with beadings h, h of the same shape
and at the same distance apart as the pairs of beadings g, g on the angle bars b, b.
The clips or angular junction pieces c, care also provided with beadings i, i at the
angle. The beadings of the bars a and b and clips or angular pieces c, c can engage
with one another so as to interlock and maintain the several parts in the proper
relative positions for joining the parts of the frame. After having arranged the
junctions of the horizontal and vertical bars a, b in their proper relative positions
and placed the angular junction pieco or clip in its place so that the holes in it
coincide with those in the horizontal and vertical bars and made the several parts
interlock by their beadings the screw pins kk are passed into the coincident holes
in the clip c and bars a and screwed into the screwed holes e, e in the vertical
angle bar b as represented in Figures 6 and 7. In this way the several junctions
of the bars a, b are made and the frame of the lamp built up. Lamp frames having
an oblong figure in plan or a polygonal figure in plan may be built up of horizontal
bars and vertical angle bars and angular clips as illustrated with respect to a
square frame the angles being varied according to the number of the sides of tho
lamp frame.
Instead of using screws for fastening the junctions of the parts a, b, c together
as described and represented, the said parts may be rivetted or the said parts may
be secured together by folding over portions of the bars a, a upon the angle bars b
and clips c. For this purpose a perforated pattern is by preference used in the
bars a, a, the folding over parts being partly pierced out so as to form part of the
pattern or design of the frame of the lamp.

page_text: When a simple frame is required the angular pieces or clips c may be dispensed
with and the bars a and angle bars b only be used. In this modification, the angle
bars b are outside the bars a instead of inside as represented in the Drawing, the
horizontal and angle bars being secured together in the ways herein before
described. The bars a and b may either be made by stamping or drawing or by
casting. When a cast frame is to be made in order to avoid the extra thickness at
the angle or joints of the frame, we cast the clip upon the angle bar b or when the
length of the anglo bar b or depth of the frame renders such casting impracticable_
the clip may be brazed to the angle bar b.
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:-
The improvements in the construction of the metallic frames of hall and other
lamps herein before described and illustrated in the accompanying Drawing; that
is to say, the several methods herein before described and illustrated of constructing
the junctions of the bars of which the metallic frames of the said lamps are built
up, whereby the unconnected bars may be packed for transit or storage and may
be readily connected together for forming the lamp frame without soldering.
Dated this Second day of September 1884.