Improvements in Machinery for Pressing Boats from Sheet Metal.
Year: 1893

page_text: Date of Application, 18th Apr., 1893
Complete Specification Left, 17th Jan., 1894-Accepted, 17th Feb., 1894
PROVISIONAL SPECIFICATION.
Improvements in Machinery for Pressing Boats from Sheet Metal.
I, WILLIAM HESLOP, of Calder Vale Road, Wakefield, in the County of York,
Engineer, do hereby declare the nature of this invention to be as follows:-
In the Specification of my Patent No. 5391 A.D. 1892, I have described and
shewn in the drawings dies for pressing half a boat from a single sheet of metal,
such dies being constructed of several sections.
By employing the dies described in the above Specification, boats could only be
produced having one and the same width of beam according to the size of such
dies; a new set of dies being necessary for every variation or alteration of width
of boat required to be made.
The object of my present invention is to construct apparatus in such a manner
that the dies may be made deeper with facility, thereby enabling boats of various
widths or beam to be manufactured from one and the same set of dies.
According to my invention I remove the centre section of the lower die, and
replace it with a taper section, having its lower part broader than the upper part.
This insertion of a taper section throws the die out of the horizontal line, raising
the end in proportion to the amount of the angles of the taper section; consequently
it is necessary to provide taper packing pieces to place below or underneath the
remaining sections of the die, in order to take the pressure in a vertical direction.
Taper packing pieces are also provided on the upper edge of the die, in order to
bring the upper part, which forms the keel of the boat, into a horizontal line, the
said packing pieces being deeper near the centre of the die and tapering off to
either end of same. In the upper part of each of the end die sections I insert a
plate which is tapered to the required degree, thus leading the upper surface of
the end sections of the die into a horizontal line with the taper packing pieces.
The upper die is also altered by inserting a taper centre section, and taper
packing pieces on the upper surface of the die; no taper packing pieces being
required at the lower part or surface of the said die. The flange on the upper die,
for pressing the keel of the boat, is formed on these taper sections; the centre taper
section, however, which is the depth of the die, also carries a part of the said
flange.
In this manner the depth of the dies may be increased to any reasonable
extent, and thus boats of various width of beam may be pressed from one and
the same set of dies, thereby obviating the great cost of making large numbers
of dies.
Dated this 18th day of April 1893
COMPLETE SPECIFICATION.
Improvements in Machinery for Pressing Boats from Sheet Metal.
I, WILLIAM HESLOP, of Calder Vale Road, Wakefield, in the County of York,
Engineer, 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 :-
In the Specification of my Patent No. 5391 A.D. 1892 I have described and
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page_text: shown in the drawings, dies for pressing half a boat from a single sheet of metal,
such dies being constructed of several sections.
By employing the dies described in the above Specification, boats could only be
produced having one and the same width of beam according to the size of such dies;
a new set of dies being necessary for every variation or alteration of width of boat
required to be made.
The object of my present invention is to construct apparatus in such a manner
that the dies may be made deeper with facility, thereby enabling boats of various
widths of beam to be manufactured from one and the same set of dies.
In order that my invention may be clearly understood, I will proceed to describe
same with reference to the accompanying drawings, in which similar letters refer
to like parts in all the figures.
Figures 1 and 2 are longitudinal sections, shewing respectively upper and lower
dies constructed in accordance with my invention, and Figures 3 and 4 are
transverse sections of said dies.
According to my invention I remove the centre section of the lower die, and
replace it with a taper section A, having its lower part broader than the upper
part. This insertion of the taper section A throws the die out of the horizontal
line, raising the end in proportion to the amount of the angles of the taper section;
consequently it is necessary to provide taper packing pieces B to place below or
underneath the remaining sections C of the die, in order to take the pressure in
a vertical direction. Taper packing pieces B' are also provided on the upper edge
of the die, in order to bring the upper part which forms the keel of the boat, into a
horizontal line, the said packing pieces B' being deeper near the centre of the die,
and tapering off to either end of same. In the upper part of each of the end dic
sections C, I insert a plate D, which is tapered to the required degree, thus leading
the upper surface of the end sections C of the die into a horizontal line with the
taper packing pieces B'.
The upper die is also altered by inserting a taper centre section E, and taper
packing pieces F on the upper surface of the remaining sections H of the die; no
taper packing pieces being required at the lower part or surface of the said die.
The flange F on the upper die, for pressing the keel of the boat, is formed on these
taper sections F; the centre taper section E however, which is the depth of the
die, also carries a part of the said flange F¹.
In this manner the depth of the dies may be increased to any reasonable extent,
and thus boats of various width of beam may be pressed from one and the same set
of dies, thereby obviating the great cost of making large numbers of dies.
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 :-
1. In machinery for pressing boats, a central taper section A, taper packing
pieces B and B', and packing plates D, substantially as and for the purposes
set forth.
2. In machinery for pressing boats, a central taper section E, and taper packing
pieces F, substantially as and for the purposes set forth.
3. The employment of taper sections and packing pieces for throwing the dies
out of the original form, and thus enabling boats of various widths of beam to be
made from one and the same set of dies, substantially as herein set forth.
4. The general arrangement, construction and combination of the various parts
forming the machinery for pressing boats from sheet metal, substantially as herein
set forth.
Dated this 17th day of Ta1001