Improvements relating to Lanterns for Electric Lamps and to Posts for Supporting the same.
Year: 1889

page_text: Date of Application, 4th July, 1889-Accepted, 31st Aug., 1889
COMPLETE SPECIFICATION.
Improvements relating to Lanterns for Electric Lamps and to Posts
for Supporting the same.
I, RICHARD EDWARD KEEN, of Homewood, London Road, St. Leonards on Sea,
Gentleman, 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 lanterns for electric lamps and to post or columns for
supporting such lanterns, and is designed to improve the construction of the
same.
In the specification of former Letters Patent granted to me and dated the
25th April 1888, No. 6157, I have described certain improvements in lanterns for
electric arc lamps and in posts or columns for supporting them.
My present invention comprises an improved method or manner of connecting or
attaching a lantern for an arc electric lamp to the post or column so that the said
lantern may be readily connected therewith or disconnected therefrom, and whereby
I am enabled to form the top or upper portion of the said lantern as well as the lower
portion thereof, of opal or similar material.
In the said former specification, moreover, I have described an improved step for
posts or columns which is permanently hinged or pivoted directly to the post or
column, thus necessitating the provision of lugs or the like on the said column for
the reception of the binge pin or pivot. This arrangement has been found dis-
advantageous by reason of the difficulty of replacing a step if the lugs to which
it is hinged or pivoted should be accidentally damaged or broken, and for other
reasons.
According to another part of my present invention I provide a separate device
comprising a suitable plate or bracket which can be readily attached to and removed
from the post or column and which has a step hinged or pivoted to it. Therefore
if the said step should be damaged it may be readily replaced.
In the accompanying drawings I have shown how my said invention may be
conveniently and advantageously carried into practice.
Figure 1 shows in elevation a portion of a post or column with the lantern attached
or connected therewith constructed according to my present invention.
Figure 2 is a plan thereof the upper portion or top of the lantern being
removed.
Figure 3 is a sectional view showing a detail of construction.
Figure 4 is a front elevation, and
Figure 5 is a side elevation partly in section both drawn to an enlarged scale
illustrating my improved step.
Like letters indicate corresponding parts throughout the drawings.
A is the post or column, B is the lantern, C is the globe or bulb of the electric
lamp.
The post or column A is connected by means of supports A' with a ring or socket D
formed of cast iron or other suitable material. Upon the inside of the ring or
socket D is provided a rim flange or projection D¹.
The lantern B is constructed of opal or opaque glass or other suitable material, and
consists in a lower part B and an upper part B¹. The lower part B is provided with
metal rings E, E¹. The ring E' is formed of a suitable diameter to pass easily
through the rim or flange D' upon the ring or socket D. E' are projections or lugs
upon the ring E' which are adapted to pass through apertures D² provided in the rim
or flange D¹. D³ are projections upon the said rim or flange D'intended to secure

page_text: the lugs or projections E' in position when the lower part B of the lantern is
connected to the ring or socket D as hereinafter described. The lower part B of the
lantern can be readily connected to the said ring or socket D in the following
manner that is to say, the projections or lugs E2 upon the ring E¹ are passed through
the apertures D² in the rim or flange D' and the lower part B of the lantern is then
turned round until the said projections or lugs E3 can be caused to rest between the
projections D³ as more clearly shown in Figure 1. To remove or disconnect the
lower part B of the lantern from the ring or socket D.all that is necessary is to
raise.the said lower part B until the projections or lugs E2 will clear the projections D³,
and turn round the said part B. until the said projections or..lugs.E2 are opposite.the
apertures D2 when the said lower part B can be removed. By this arrangement I
.am enabled to form the upper part B₁ as well as the lower part. B of the lantern of
opal or opaque glass, thus adding greatly to the appearance of the said 'lantern. "The
upper part B of the lantern is provided with a metal ring F the projecting portion
of which is adapted to fit into the upper part of the ring or socket D. F is an
ornamental flange provided upon the ring F. To secure the upper part B₁ of the
lantern more securely in position I sometimes provide screw bolts F2 which pass
through the ornamental flange F' and are screwed into suitably internally screw
threaded holes provided in bosses D* upon the ring D. G is an ornamental metal top
secured to the upper extremity of the upper part B' of the lantern. The globe or
bulb C of the arc electric lamp is secured in any suitable manner to the ring E of
the lower part B of the lantern. I prefer to so construct the metal rings E, E¹ and F
and the metal top G that they can be readily removed from the lower part B.and
the upper part B of the lantern, so that should the opal or opaque glass portions
become broken they can be replaced without the necessity for replacing the said
metal rings. H, H are lugs either forming part of or firmly attached to the ring or
socket D. I is a ring formed of any suitable insulating material and secured to the
said lugs H. The ring 1 is intended to support the electric lamp.
Figures 4 and 5 illustrate my improved device comprising a step J pivoted or hinged
at J to lugs K upon a piece or plate L. L¹ is a recess in the said piece or plate L
into which the step J is adapted to fit when closed. In order to retain the step in
the said recess II form the hole J2 through which the pivot J passes oval or slotted.
By forming the hole in this manner the step J when closed or shut will drop down
in such a manner as to cause the hinge or joint to bind and thus prevent the said
step from falling down into its open position. To open the step J the latter must
be raised so as to obtain the necessary clearance in the joint or hinge. J³ is a hole or
recess in the said step intended to permit the insertion of some suitable tool or instru-
.ment for facilitating the lifting and opening of the said step. The piece L is moreover
provided with holes L' through which are passed screw bolts M for securing it to the
post or column A.
Any convenient number of these steps may be employed, placed at any suitable
distance apart upon the post or column.
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 :-
First. The improved means substantially as described for readily connecting the
lantern with the post or column. and disconnecting it therefrom.
Second. A lantern for an electric lamp, formed in two parts of opal or opaque
glass or other suitable material and provided with removable metal rings, substantially
as, and for the purpose, set forth.
Third. The improved device comprising the step hinged or pivoted to a suitable
plate or bracket for attachment to the post or column, and adapted to enter a recess.in
the said plate or bracket and means for preventing accidental displacement of the
said step from the said. recess, substantially as described and for the purpose
specified.

page_text: Fourth. The improved apparatus comprising the post or column and the lantern
constructed substantially as described with reference to Figures 1 to 3 of the
accompanying drawings.
Dated this 4th day of Inly 1880
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, Agents for the Applicant.