Improvements in Cases or Boxes for Fitting in Life and other Boats for Increase of Buoyancy, also Applicable to Foot Warmers and other Air-tight Cases or Boxes.
Year: 1888

page_text: Date of Application, 20th Apr., 1888
Complete Specification Left, 18th Jan., 1889
Complete Specification Accepted. 23rd Feb., 1889
Improvements in Cases or Boxes for Fitting in Life and other Boats
for Increase of Buoyancy, also Applicable to Foot Warmers and
other Air-tight Cases or Boxes.
We, EDWIN JAMES PRESTON, of the firm of J. Stone and Company, Engineers, and
THOMAS ATKINSON, in the employ of the said firm both of Deptford in the County of
Kent do hereby declare the nature of the said invention to be as follows:-
These improvements are applicable to air tight cases or boxes such as are used for
increasing the buoyancy of life-boats and other boats; but they may also be applied
to foot-warmers and other air or watertight cases or boxes. We make such cases or
boxes of any suitable or required form and dimensions partly or wholly of corrugated
or indented sheet metal. For some purposes we make them with corrugated sides and
with flat top and bottom, but sometimes we form the latter with circular oval or other
depressions or recesses the object of the invention being to increase the strength and
stiffness but so as to afford, a certain elasticity to the surfaces to allow for expansion
and contraction by changes of temperature while at the same time preventing racking
or straining of the joints especially those between the sides and the top and bottom.
For life-boats and the like these cases would be made of sheet copper, Muntz metal or
the like. The sides may be joined to the top and bottom by soldering and with or
without flanging. The corrugations or flutings may run the whole height of the sides
or part of same. Where. such cases are made with rounded corner or corners such
corner parts of the sides need not be corrugated.
Clases constructed according to this invention may be made of very light material
and yet be very strong.
1000

page_text: COMPLETE SPECIFICATION..
Improvements in Cases or Boxes for Fitting in Life and other Boats
for Increase of Buoyancy, also Applicable to Foot Warmers and
other Air-tight Cases or Boxes.
:
We, EDWIN JAMES PRESTON of the firm of J. Stone and Company Engineers and
THOMAS ATKINSON in the employ of the said firm both of Deptford in the County of
Kent 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 :-
These improvements are applicable to airtight cases or boxes such as are used for
increasing the buoyancy of life boats and other boats; but they may also be applied to
footwarmers and similar air or water tight cases or boxes. We make such cases or
boxes of any suitable or required form and dimensions partly or wholly of corrugated
or otherwise indented sheet metal. For some purposes we make them with corrugated
sides and with flat top and bottom, but sometimes we form the latter with circular oval
or other depressions or recesses; the object of the invention being to increase the strength
and stiffness but so as to afford a certain elasticity to the surfaces to allow for expansion
and contraction by changes of, temperature while at the same time preventing racking
or straining of the joints especially those between the sides and the top and bottom.
For life boats and the like these cases would be made of sheet copper Muntz metal or
the like.
"
.3
The sides may be joined to the top and bottom by soldering and with or without
flanging. The corrugations or flutings may run the whole height of the sides or part
of same.
When such cases are made with rounded corner or corners such corner parts
of the sides need not be corrugated.
Cases constructed according to this invention may be made of very light material
and yet be very strong.
In the accompanying drawings we have shown some examples or forms in which the
invention may be carried into effect. Figure 1 is a plan of underside of a box made of
a form to fit the inside of the stem of a life boat, Figure 2 is an end view and Figure 3
a vertical longitudinal section. It is as an example made of corrugated sheet copper
throughout the corrugatious being carried nearly up to the edges. The ends A are
flanged over the sides B and soldered on airtight.
Figures 4, 5 and 6 are end view, longitudinal section and transverse section respec-
tively of a box suitable for being placed laterally in a life boat. In this case as another
example the ends 'A are flanged up with a shoulder to rest against the ends of the
sides B.
Figure 7 is a plan and Figure 8 a transverse section through a footwarmer made
entirely of corrugated sheet metal the ends being here as another example flanged
outside the sides or we may make the ends of cast metal with or without corresponding.
corrugations.

page_text: If the vent hole in the plug should become choked up and the side or sides hence
slightly collapse because of the vacuum forming while cooling, the springy nature of
the material will when air is readmitted cause the same to assume the original form.
The corrugations or other indentations may suitably be effected by passing the sheets
through rolls, the edges being afterwards flattened down by hammering or pressed. Or
with specially made rolls the corrugations or other indentations inay be made wholly
by means of the said rolls. Or the corrugations or other indentations may be produced
by pressing dies. Cupshaped indentations are suitable for some purposes.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is:-
First-Constructing cases or boxes and other receptacles for increasing the buoy-
ancy of life and other boats wholly or partly of corrugated or indented sheet metal
substantially as set forth.
Second Constructing cases or boxes for, footwarmers wholly or partly of corrugated
or otherwise indented sheet metal substantially as set forth.
Dated this 18th day of January 1889.
EDWIN JAMES PRESTON.
THOMAS ATKINSON.
By Jensen & Son,
'
77, Chancery Lane, London, W.C.,
Patent Agents. .

page_text: This Specification was, upon the 8th day of July 1891, Amended under
Sections 18 to 21 of the Patents, Designs, and Trade Marks Act, 1883.
Improvements in Cases or Boxes for Fitting in Life and other Boats
for Increase of Buoyancy, also Applicable to Foot Warmers and
other Air-tight Cases or Boxes.
We, EDWIN JAMES PRESTON, of the firm of J. Stone and Company, Engineers, and
THOMAS ATKINSON, in the employ of the said firm both of Deptford in the County of
Kent do hereby declare the nature of the said invention to be as follows:-
These improvements are applicable to air tight cases or boxes such as are used for
increasing the buoyancy of life-boats and other boats; but they may also be applied
to foot-warmers and other air or watertight cases or boxes. We make such cases or
boxes of any suitable or required form and dimensions partly or wholly of corrugated
or indented sheet metal. For some purposes we make them with corrugated sides and
with flat top and bottom, but sometimes we form the latter with circular oval or other
depressions or recesses the object of the invention being to increase the strength and
stiffness but so as to afford a certain elasticity to the surfaces- to allow for expansion
and contraction by changes of temperature while at the same time preventing racking
or straining of the joints especially those between the sides and the top and bottom.
For life-boats and the like these cases would be made of sheet copper, Muntz metal or
the like. The sides may be joined to the top and bottom by soldering and with or
without flanging. The corrugations or flutings may run the whole height of the sides
or part of same. Where such cases are made with rounded corner or corners such
corner parts of the sides need not be corrugated.
Cases constructed according to this invention may be made of very light material
and yet be very strong.
A
1 1000

page_text: COMPLETE SPECIFICATION (AMENDED).
Improvements in Cases or Boxes for Fitting in Life and other Boats
for Increase of Buoyancy, also Applicable to Foot Warmers-and
other Air-tight-Cases-or-Boxes.
We, EDWIN JAMES PRESTON of the firm of J. Stone and Company Engineers and
THOMAS ATKINSON in the employ of the said firm both of Deptford in the County of
Kent 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 :-
These improvements are applicable to airtight cases or boxes such as are used for
increasing the buoyancy of life boats and other boats; but they may also be applied to
footwarmers and similar-air or water tight-eases or boxes. We make such cases or
boxes of any suitable or required form and dimensions partly or wholly of corrugated
or otherwise indented sheet metal, For come purposes we make them with corrugated
sides and with flat top and bottom, but sometimes we form the latter with eirenlur oval
or other depressions or recesses, the object of the invention being to increase the strength
and stiffness while obviating the necessity of internal bulkheads or supports and stiffening
'seams but so as to afford a certain elasticity to the surfaces to allow for expansion and
contraction by changes of temperature while at the same time preventing racking or
straining of the joints especially those between the sides and the top and bottom.
For life boats and the like These cases would be are made of sheet copper Muntz
metal or the like. other analogous alloys of copper.
The sides may be joined to the top and bottom by soldering and with or without
flanging. The corrugations or flutings may run the whole height of the sides or length
or part of same. When such cases are made with rounded corner or corners such
corner parts of the sides need not be corrugated.
Cases constructed according to this invention may be made of very light material
and yet be very strong.
In the accompanying drawings we have shown some examples or forms in which the
invention may be carried into effect.. Figure.l-is a plan of underside of a box made of
a form to fit the insides of the stem of a life boat, Figure 2 is an end view and Figure 3
a vertical longitudinal section. It is as an example made of corrugated sheet copper
throughout the corrugations' being carried nearly up to the edges. The ends A are
flanged over the sides B and soldered on airtight.
Figures 4, 5 and 6 are end view, longitudinal section and transverse section respec-
tively of a box suitable for being placed laterally in a life boat. In this case as another
example the ends A are flanged up with a shoulder to rest against the ends of the
sides B.
1
"
1.14
Figure 7 is a plan and Figure 8 a transverse section through a footwarmer made
entirely of corrugated sheet metal the ends being here as another example flanged
outside the sides or we may make the ends of cast metal with or without corresponding
corrugations.

page_text: If the vent hole in the plug should become choked up and the side or sides-henee
slightly collapse-because of the vacuum forming while cooling, the springy nature of
the material will when air is readmitted cause the same to assume the original form.
The corrugations or other indentations may suitably be effected by passing the sheets
through rolls, the edges being afterwards flattened down by hammering or pressing. Or
with specially made rolls the corrugations or other indentations may be made wholly
by means of the said rolls. Or the corrugations or other indentations may be produced
by pressing dies. Cupshaped indentations are suitable for some purposes. the small
or short surfaces and we do not claim them for long surfaces where we prefer to use
longitudinal corrugations.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is :-
First Constructing cases or boxes and other receptacles for increasing the buoy-
ancy of life and other boats wholly or partly of corrugated or indented sheet metal
substantially as set forth copper or alloys of copper substantially as described.
Second Constructing enses or boxes for footwarmers wholly or partly of corrugated
or otherwise-indented sheet metal substantially as set forth.
Dated this 18th day of January 1889.
EDWIN JAMES PRESTON.
THOMAS ATKINSON.
By Jensen & Son,
77, Chancery Lane, London, W.C.,
Patent Agents.