Improvements in Air and Water Tight Covers for Junction Boxes used in Electrical Distribution, and for other purposes.
Year: 1893

page_text: Date of Application, 13th Sept., 1893
Complete Specification Left, 12th June, 1894-Accepted, 13th Sept., 1894
PROVISIONAL SPECIFICATION.
Improvements in Air and Water Tight Covers for Junction Boxes
used in Electrical Distribution, and for other purposes.
SYDNEY WILLIAM BAYNES Electrical Engineer 37 Spring Gardens Manninghamn
Bradford Yorkshire. I do hereby declare the nature of this invention to be as
follows:-
I construct the lid or cover in such a manner that it passes over the outside of
the box or other appliance, and projects down the sides, three or four inches,
according to the depth and head of water it is desired it shall resist.
A second rim or projecting flange is provided to the inside of the cover and fits
into a groove or trough round the edge of the box. I fill the said groove or trough
with oil, or other suitable substance, so that when the lid is on and the inside rim
submerged for about two inches in the trough, the said combination forms an air
and water tight chamber.
An air passage connects the outer underside of the lid with a bladder, or other
suitable arrangement, which occupies the centre or other appropriate position of
the lid inside the box. This allows the lid to be removed and replaced without
forcing over the oil or other substance in the groove or trough before named, by
equalizing any difference of pressure which may occur between the underside of
the lid on the outside, and the inside of the box or chamber.
I sometimes employ two lids, the one dropping into the trough described, and
the other covering the first one and passing down far enough to trap sufficient air
to prevent any water from entering the box as described.
In some cases I employ an air cock to allow the air to pass between the inside of
the box and the atmosphere, when shifting the lid.
Dated this 12th day of September 1893.
SYDNEY WILLIAM BAYNES.
COMPLETE 'SPECIFICATION.
Improvements in Air and Water Tight Covers for Junction Boxes
used in Electrical Distribution, and for other purposes.
SYDNEY WILLIAM BAYNES Electrical Engineer 37 Spring Gardens Manningham
Bradford Yorkshire. I SYDNEY WILLIAM BAYNES 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 :-
I construct the lid or cover in such a manner that it passes over the outside of
the box or other appliance and projects down the sides three or four inches,
according to the depth and head of water it is desired it shall resist.
A second rim or projecting flange is provided to the inside of the cover, and fits
into a groove or trough round the edge of the box. I fill the said groove or trough
with oil or other suitable substance, so that when the lid is on and the inside rii
submerged for about two inches in the trough, the said combination forms an air
and water-tight chamber. See Sheet 2. A and A is the lid passing down over
outside of box. B and B the second rim or projecting flange forming (in this case)
part of the cover and dipping down into the oil groove (C and C) round the edge
of the box.

page_text: An air passage connects the outer side of the lid with a bladder, or other suitable
arrangement, which occupies the centre or other appropriate position of the lid
inside the box. See Sheet 1. E air passage opening under the main cover, F bladder.
This allows the lid to be removed and replaced without forcing over the oil or
other substance in the groove or trough before named, by equalizing any difference
of pressure which may occur between the underside of the lid on the outside, and
the inside of the box or chamber.
I sometimes employ two lids, the one dropping into the trough described, and the
other covering the first one and passing down far enough to trap sufficient air to
prevent any water from entering the box as described. See Sheet 1. G G G shows
the inside lid and H. H. H. indicates the outside lid.
In some cases I employ an air cock to allow the air to pass between the inside of
the box and the atmosphere, when shifting the lid. See Sheet 3. W, air cock.
I sometimes when convenient dispense with the cock and air passages, and make
the oil trough of ample depth to avoid the oil being driven over when the lid is
forced down and the air compressed inside the box. Sheet 3 shows how my
invention may be applied to other purposes.
In this case a water recording meter is shown in an air and water tight chamber,
A and A shows the outside rim projecting down over the outside of the chamber
B and B the inside rim dipping into the oil groove. C and C shows the oil groove
encircling the edge of chamber.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is t be performed, I declare that what I
claim is-
1st. An arrangement whereby lids of boxes for use in electrical distribution and
other purposes, are rendered air and water tight, substantially as set forth.
2nd. An arrangement for equalizing the air between the atmosphere and inside
chamber or box, substantially as set forth.
Dated this 11th day of June 1894.
SYDNEY WILLIAM BAYNES.