Apparatus for Supporting Pendent Globes, applicable to the Globes of Enclosed Arc Lamps.
Year: 1899

page_text: Date of Application, 2000
Complete Specification Left, 26th Mar., 1900-Accepted, 28th Apr., 1900
PROVISIONAL SPECIFICATION.
Apparatus for Supporting Pendent Globes, applicable to the Globes
of Enclosed Arc Lamps.
We, TURE IVAR SÖDERLUND and OSCAR ALBIN EKVALL, both of 9, St. Eriks-
gatan, Stockholm, Sweden, Engineers, do hereby declare the nature of this inven-
tion to be as follows:
This invention relates to a device for supporting the inner globe of electric
lamps with enclosed arc light, which apparatus can moreover be advantageously
employed for other purposes.
Referring to the accompanying drawing:
The lower carbon of the arc lamp is carried by the two vertical rods b b
which are fastened above to the fixed parts of the lamp. To each rod is revolubly
attached a hook directed outwards and so that the said hook clasps the rod
on both sides, and is movable on a bolt passing through holes in the hook and
the rod respectively. The point of the hook moves in a vertical plane and the
movement of the hook downwards is limited by the rod when the hook reaches
a nearly horizontal position; the upward movement is likewise limited by the
rod when the hook is nearly vertical.
1
The cover d is provided with holes for the rods b b and for the upper carbon k
and can be raised or lowered guided by the rods. On the cover d the loops gg
are so fixed that they can surround the hooks c c without, however, touching
them, when the cover takes up its lowermost position, that is, when it rests
on the inner globe
a.
-
This globe is simply fixed by being pushed into its place. Thereby its upper
edge meets the under side of the hooks cc which in consequence of their own
weight cause their points to project as far out as possible.
The hooks are consequently lifted until the upper part of the globe which
is of a smaller diameter than the rest is just outside the points of the hooks,
when the latter are freed and fall down. When the hooks have again reached
their lowest position the globe can be let go and it will remain hanging on the
hooks. The cover d now rests on the upper edge of the globe and forms together
therewith an enclosed space around the arc-light.
If the globe is to be removed for replacing the carbon for instance one hand
is placed round it and it is lifted, whereon the cover d and the loops gg follow
the motion until the latter push against the lower edges of the hooks and bring
them into a vertical position. If the cover is then firmly held by one hand
in this upper position the globe can then be taken away with the other hand
without difficulty.
By means of the device above described it is easy to put on the globe firmly
and release it again which is especially useful for putting in carbons.
The details can of course be varied in manifold ways, without alteration in
the inventive idea. For instance, the hooks ce and the loops g can be placed

page_text: outside the globe instead of inside, or the loops can be replaced by the hooks
and so forth.
Dated this 26th day of Luna 1800
W. P. THOMPSON & Co.,
322, High Holborn, London, W.C., Patent Agents for the Applicants.
Apparatus for Supporting Pendent Globes, applicable to the Globes
of Enclosed Arc Lamps.
We, TURE IVAR SÖDERLUND and OSCAR ALBIN EKVALL, both of 9, St. Eriks-
gatan, Stockholm, Sweden, Engineers, do hereby declare the nature of this inven-
tion and in what manner the same is to be performed to be particularly described
and ascertained in and by the following statement:-
1
This invention relates to a device for supporting the inner globe of electric
lamps with enclosed arc light, which apparatus can moreover be advantageously
employed for other purposes.
Referring to the drawing accompanying the Provisional Specification:-
The lower carbon of the arc lamp is carried by the two vertical rods b b
which are fastened above to the fixed parts of the lamp. To each rod is revolubly
attached a hook directed outwards and so that the said hook clasps the rod
on both sides, and is movable on a bolt passing through holes in the hook and
the rod respectively. The point of the hook moves in a vertical plane and the
movement of the hook downwards is limited by the rod when the hook reaches
a nearly horizontal position; the upward movement is likewise limited by the
rod when the hook is nearly vertical.
The cover is provided with holes for the rods 66 and for the upper carbon k
and can be raised or lowered guided by the rods. On the cover d the loops gg
are so fixed that they can surround the hooks c c without, however, touching
them, when the cover d takes up its lowermost position, that is, when it rests
on the inner globe a.
This globe is simply fixed by being pushed into its place. Thereby its upper
edge meets the under side of the hooks cc which in consequence of their own
weight cause their points to project as far out as possible.
The hooks are consequently lifted until the upper part of the globe which
is of a smaller diameter than the rest is just outside the points of the hooks,
when the latter are freed and fall down. When the hooks have again reached
their lowest position the globe can be let go and it will remain hanging on the
hooks. The cover d now rests on the upper edge of the globe and forms together
therewith an enclosed space around the arc-light.
If the globe is to be removed for replacing the carbon for instance one hand
is placed round it and it is lifted, whereon the cover d and the loops gg follow
the motion until the latter push against the lower edges of the hooks and bring
them into a vertical position. If the cover is then firmly held by one hand
in this upper position the globe can then be taken away with the other hand
without difficulty.
By means of the device above described it is easy to put on the globe firmly
and release it again which is especially useful for putting in carbons.
The details can of course be varied in manifold ways, without alteration in
the inventive idea. For instance, the hooks c and the loops 9 can be placed
outside the globe instead of inside, or the loops can be replaced by the hooks
and so forth.

page_text: 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. An improved securing device for lamp globes in which two or more hooks »
revolubly attached to the fixed parts of the lamp are so disposed that when the
said globe a is put in its place the hooks will be pushed back by the upper edge
thereof, and will spring back again, and separate so far as to enable the said
globe a to rest upon them.
2. In the apparatus hereinbefore set forth, the modification that the hooks t
supporting the globe can be turned out of their position of rest by means of
loops, hooks, or the like y engaging under them, the said loops being so placed
in a movable part d accessible from the outside. The said part d being capable
of such a position that the loops can take hold of the hooks and open them in
order to release the globe, substantially as set forth.
Duth Ofth day of March 1900.
W. P. THOMPSON & Co.,
Of London, Liverpool, Manchester and Birmingham.