Improvements in or connected with Electric Arc Lamps.
Year: 1891

page_text: Date of Application, 17th Nov., 1891
Complete Specification Left, 17th Aug., 1892-Accepted, 17th Sept., 1892
PROVISIONAL SPECIFICATION.
Improvements in or connected with Electric Arc Lamps.
I JOHN BRUNSWICK BARTON of 38 St. Johns Road Longsight Manchester in
the County of Lancaster Merchant do hereby declare the nature of this invention
(a communication to me from abroad by William Jandus of 1905 Euclid Avenue
Cleveland Ohio United States of America Inventor) to be as follows:-
The annexed drawings and the following description set forth in detail mechanical
forms embodying this invention such detail construction being but examples of
various mechanical forms in which the principle of the invention may be used.
In said drawings
:-
Figure 1 represents a vertical section of one form of this improved device
showing a part of the upper carbon holder and the two carbons, Figure 2 a similar
section of another form and Figure 3 a section of the device applied to an electric
candle.
In the drawings the letter A indicates the upper carbon holding rod having its
lower end a reduced and screw threaded. Said reduced and screw threaded end a
is screwed into a screw threaded bore bin a metallic cap B having the lower portion
of its interior cavity screw threaded. The carbon holding rod and the cap are
A carbon
electrically connected the cap forming a part of the carbon holder.
socket c is screwed into the cavity of the cap B and is cut away for a portion of its
upper end a clamping block d fitting in said cut away portion and having a sct
screw e bearing against it said screw passing through a screw threaded opening
in the cap. The lower end of the cap has a flange and the lower end of the
socket has a flange u and the inwardly bent flange of a globe C of glass or other
transparent or translucent refractory material is clamped between said flanges having
gaskets or packing rings mm of asbestos interposed between said flanges and the
flanges and n. The globe is advantageously of cylindrical shape is open at the
lower end and has a hermetically closed joint at the upper end.
The upper carbon is clamped in the socket e by means of the clamping block d
and the set screw and the lower carbon projects up through the lower open end of
the globe.
In Figure 2 the flange g of the socket is illustrated as having a screw threaded
edge upon which a collar D having an inwardly projecting flange upon its lower
edge is screwed. Said collar clamps an outwardly projecting flange upon the
upper edge of the globe. The other parts of the device are like the parts illustrated
in Figure 1 the form illustrated in this figure (Figure 2) being simply to show the
application of the device to a globe having an outwardly projecting flange.
In Figure 3 of the drawings the device is illustrated applied to an electric
candle the globe being in this case shown as formed integrally closed at its
upper end and held with its open lower end upon the base P by means of suitable
clamps xy.
In this device is accomplished a desirable end which has not to my knowledge
been accomplished by other attachments for are lamps. The combustion at the are
within the globe will rarify the air within the latter and will consume the oxygen
of the air contained within the globe whereupon the carbonous gases thus produced
will prevent air from passing up to the arc with the exception of the small quantity
which may gradually be admitted by the mingling of the surrounding air with the
inclosed gases at the open bottom of the globe. There can be absolutely no
circulation of air in the globe on account of the hermetic closing of the upper end
of the same and this latter point the complete hermetic closing of the upper end of

page_text: the globe I consider and have found by practical experiments to be the essential
point of advantage in my invention.
As the globe and holder for the same are rigidly connected to the carbon holder
the point of the arc can never be brought near to the open lower end of the globe
by consumption of the carbons as would be liable to happen if the globe were
separately supported from the carbon holder. The carbons may be renewed and
trimmed as easily as in any are lamp now in use and the device may be attached
to any arc lamp and will effect as has been found by practice and experiments a
saving of about 85% in the consumption of the carbons. While this item will not
amount to any considerable sum as far as the cost of the carbons is concerned
the saving will result from the less amount of attention required by the lamps on
account of the longer life of the carbons.
All cinders and particles of solid carbon may freely escape at the open lower end
of the globe and the globe will besides its other offices fill the office of the common
open globes now used in protecting the are from atmospheric disturbances.
The foregoing description and the accompanying drawings set forth in detail
mechanisms embodying this invention. Changes may be made in the same provided
the principles of construction hereinbefore set forth are employed.
Dated this 17th day of November 1891
.
TONGUE & BIRKBECK,
34, Southampton Buildings, Chancery Lane, London, W.C.,
Agents for the Patentee.
COMPLETE SPECIFICATION.
Improvements in or connected with Electric Arc Lamps.
I, JOHN BRUNSWICK BARTON of 46 St. Johns Road, Longsight, Manchester in
the County of Lancaster, Merchant, do hereby declare the nature of this invention
(a communication to me from abroad by William Jaudus of 1905 Euclid Avenue,
Cleveland, Ohio, United States of America, Inventor) and in what manner the same
is to be performed to be particularly described and ascertained in and by the following
statement :-
The annexed drawings (ie. those left with the Provisional Specification) and the
following description set forth in detail mechanical forms embodying this invention
such detail construction being but examples of various mechanical forms in which
the principle of this invention may be used.
Referring to the said drawings left with the Provisional Specification:-
Figure 1 represents a vertical section of one form of this improved device showing
a part of the upper carbon holder and the two carbons Figure 2 a similar section
of another form and Figure 3 a section of the device applied to an electric
candle.
In the said drawings the letter A indicates the upper carbon holding rod having
its lower end a reduced and screw threaded. Said reduced and screw threaded
end a is screwed into a screw threaded bore b in a metallic cap B having the lower
portion of its interior cavity screw threaded. The carbon holding rod and the cap
are electrically connected the cap forming a part of the carbon holder. A carbon
socket c is screwed into the cavity of the cap B and is cut away for a portion of
its upper end a clamping block d fitting in said cut away portion and having a set
screw e bearing against it said screw passing through a screw threaded opening f
in the cap. The lower end of the cap has a flange y and the lower end of the
socket has a flange u and the inwardly bent flange of a globe C of glass or other
transparent or translucent refractory material is clamped between said flanges
having gaskets or packing rings m m of asbestos interposed between said flanges
and the flanges and c. The globe is advantageously of cylindrical shape is open
at the lower end and has a hermetically closed joint at the upper end.
26

page_text: The upper carbon is clamped in the socket c by means of clamping block d and
the set screw and the lower carbon projects up through the lower open end of the
globe.
In Figure 2 the flange g of the socket is illustrated as having a screw threaded
edge h upon which a collar D having an inwardly projecting flange n upon its lower
edge is screwed. Said collar clamps an outwardly projecting flange
upon the
upper edge of the globe. The other parts of the device are like the parts illustrated
in Figure 1 the form illustrated in this figure (Figure 2) being simply to show the
application of the device to a globe having an outwardly projecting flange.
In Figure 3 of the drawings the device is illustrated applied to an electric candle
the globe being in this case shown as formed integrally closed at its upper end and
held with its open lower end upon the base P by means of suitable clamps a y.
In this device is accomplished a desirable end which has not to my knowledge
been accomplished by other attachments for are lamps.. The combustion at the are
within the globe will rarify the air within the latter and will consume the oxygen
of the air contained within the globe whereupon the carbonous gases thus produced
will prevent air from passing up to the arc with the exception of the small quantity
which may gradually be admitted by the mingling of the surrounding air with the
enclosed gases at the open bottom of the globe. There can be absolutely no
circulation of air in the globe on account of the hernetic closing of the upper end
of the same and this latter point the complete hermetic closing of the upper end. of
the globe I consider and have found by practical experiments to be the essential
point of advantage in this invention.
As the globe and holder for the same are rigidly connected to the carbon holder
the point of the are can never be brought near to the open lower end of the globe
by consumption of the carbons as would be liable to happen if the globe were
separately supported from the carbon holder. The carbons may be renewed and
trimmed as easily as in any arc lamp now in use and the device may be attached to
any are lamp and will effect as has been found by practice and experiments a saving
of about 85% in the consumption of the carbons. While this item will not amount
to any considerable sum as far as the cost of the carbons is concerned the saving
will result from the less amount of attention required by the lamps on account of
the longer life of the carbons.
All cinders and particles of solid carbon may freely escape at the open lower end
of the globe and the globe will besides its other offices fill the office of the common
open globes now nsed in protecting the arc from atmospheric disturbances.
The foregoing description and the said accompanying drawings set forth in detail
mechanisms embodying this invention. Change may be made in the same provided
the principles of construction hereinbefore set forth are employed.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is
1. In an arc lamp an arc-inclosing chamber hermetically closed at all points
excepting at its lower end substantially as set forth.
2. In an are lamp the combination with a carbon holder of an arc-inclosing
globe open at its lower end and hermetically closed at all other points and
hermetically joined at its upper end to the lower end of said carbon holder substan-
tially as set forth.
3. In an arc lamp the combination of a carbon holding rod a carbon clamp at the
lower end of said rod and an arc-inclosing globe open at its lower end and
hermetically joined to said rod and clamp at its upper end substantially as
set forth.
4. In an arc lamp the combination of a carbon holding rod a hermetically closed
cap at the lower end of said rod a carbon clamp within said cap and an arc-
inclosing globe open at its lower end and hermetically joined to the lower edge of
said cap substantially as set forth.

page_text: 5. In an are lamp the combination of a carbon holding rod a bermetically closed
cap at the lower end of said rod having a flange at its lower edgera.carbom clamp
within said cap and an arc-inclosing globe open at its lower end and provided with
a flange at its upper end hermetically clamped against the flange of said cap sub-
stantially as set forth.
6. In an arc lamp the combination with a carbon clamp inclosed in a cap closed
at the top and a depending are inclosing globe. more or less open at its lower spart
and having an annular flange at its connecting portion of two asbestos packing rings
respectively located on opposite sides of said flange and a clamping device which
fastens together said cap flange and asbestos rings substantially as set forth.
7. In an arc lamp the combination of a cap an arc-inclosing globe open at its
lower end and hermetically joined at its upper end. to said cap a carbon, holding
socket screwed into said cap and having a cut away portion a clamping block in
said cut away portion and a set screw inserted through said cap to bear. against
said clamping block substantially as set forth.
8. In an arc lamp the combination with a closed cap B.having an annular. Hange
and a depending arc-inclosing globe open at its lower part and..formed with an
annular flange at its upper portion of packing and a clamp which secures together
said cap flange said globe flange and said packing together with the: carbon socket e
inclosed within said cap adjustable clamping block d and set screw.e substantially:
as described.
"Dated this 17th day of August 1809
TONGUE & BIRKBECK,
34, Southampton Buildings, Chancery Lane, London, W.C.,
Agents for the Applicant.