Improvements in Machinery for Making Tubs, Buckets, and other similar Vessels for Use in Collieries, Mines, and other Places.
Year: 1893

page_text: Date of Application, 7th Sept., 1893
Complete Specification Left, 7th June, 1894-Accepted, 7th July, 1894
PROVISIONAL SPECIFICATION.
Improvements in Machinery for Making Tubs, Buckets, and other
similar Vessels for Use in Collieries, Mines, and other Places.
I, WILLIAM HESLOP, of Westmoreland Avenue, Bridlington Quay, in the
County of York, Engineer, do hereby declare the nature of this invention to be as
follows:-
The object of my invention is to construct machinery in such a manner that tubs,
buckets, and other similar vessels may be pressed or stamped out of single sheets
of metal at one or more operations.
According to my invention I provide male and female dies, the female die having
corrugations on its inner surface and the male die having corresponding corrugations
on its outer surface. The corrugations, which may be of any number to suit the
required shape of the tub to be produced, are made to taper down towards the base
of the dies.
A guide frame is provided of suitable size and shape to cover the upper edge of
the female die, and on the under side of the guide frame transverse projections or
ribs are formed corresponding in position to the outer bends of the corrugations.
This guide frame can be held down to the female die by means of bolts, clamps, or
other convenient means.
The plate to be pressed is cut to the required shape, the edge of same conforming
with the number of corrugations in the dies, and the edge line of the said plate
corresponding in length to the corrugated edge of the die. The plate is then
placed on the female die, and the guide frame is brought into position, the
projecting parts of the lower surface of the guide frame resting on the plate at its
projecting bends. The guide frame is then fastened in position, and on the dies
being brought together, the plate is drawn between them, the superfluity of the
metal plate being taken up in the corrugations at the sides.
The plates may be pressed either in a hot or cold state, and several operations
may be performed in order to bring the plate to the required shape. The plate
may be pressed by different forms of dies in order to bring it gradually to the
required shape, and various shapes and sizes of coal and other tubs may be formed
from one set of dies by making the said dies in sections and changing the said
sections as required.
Dated this 7th day of September 1893.
BREWER & SON,
London and Leeds, Agents for Applicant.
COMPLETE SPECIFICATION.
Improvements in Machinery for Making Tubs, Buckets, and other
similar Vessels for Use in Collieries, Mines, and other Places.
I, WILLIAM HESLOP, of Westmoreland Avenue, Bridlington Quay, 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 :-
The object of my invention is to construct machinery in such a manner, that
tubs, buckets, cisterns, baths, and other similar vessels, (hereafter called tubs),
may be pressed or stamped out of single sheets of metal, at one or more operations.

page_text: According to my invention I take a plate of metal of a suitable shape, and by
the employment of male and female dies, press or stamp such plate to the required
shape of tub to be produced..
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.
Figure 1 is a section of male and female dies constructed according to my
invention, with a plate in position ready for stamping. Figure 2 is a section of
the same dies when brought together with plate pressed into shape, and Figure 3 is
a sectional plan of same, showing the process of stamping a tub at one operation,
(see Sheet 1). In Sheets 2 and 3, I have shown dies for stamping a tub at two
operations, the first operation being performed by dies shown in section
at Figures 4, 5, and 6; the second operation being performed by dies shown
at Figs. 7, 8 and 9.
Referring to Sheet 1, I employ the male die A, having corrugations B on its
exterior surfaces. C is the female die, composed of suitable sections, having
corrugations D on its inner surface, and provided with a separate movable section E
forming the base. A guide frame F is provided of suitable size and shape to cover
the upper edge C₁ of the female die C, and on the underside of the guide frame F,
projecting parts or ribs F! are formed corresponding in position to the outer bends
of the corrugations of the dies. This guide frame F can be held down to the
female die C, by bolts, cramps, or other convenient means.
G is the plate to be pressed, which is cut to the required shape, the edge of same
conforming with the number of corrugations of the dies. This plate G is placed
on the female die C, and the guide frame F is brought into position thereon, the
projecting parts F" on the under surface of the guide frame resting on the plate G
at its projecting bends. The guide frame F is then fastened in position, and on.
the dies A and C being brought together, the plate G is drawn between them, the
superfluity of the metal plate being taken up in the corrugations at the sides.
The dies A and C are now brought apart, and the lower section E is raised by
means of the plunger H, thus raising the pressed tub out of the female die C.
Referring to Sheet 2, the male die A is of a similar description to that shown in
Sheet 1, with the exception that its exterior surface is smooth, instead of corrugated.
The female die C is also smooth on its inner surface, and is provided with a separate
movable section E forming the base. The said die C is composed of four sections,
viz. two side sections J and two end sections K, such sections being placed
together so as to leave a space L at each corner of the die, the spaces L being
wider at the top than at the bottom as seen at Fig. 4. The end sections K are
provided with movable sides K', which are free to slide up and down in the
guides K. The plate G having been placed on the female die C, the dies A and C
are brought together, bending the plate between them, and forcing the superfluous
metal into the spaces L, thereby forming folds M at the corners of the partially
formed tub, as seen at Fig. 6. The dies A and C are now brought apart, and the
lower section E is raised by means of the plunger H, thus raising the partially
formed tub, and simultaneously lifting the movable sides K' in the end sections K,
which has the effect of liberating the said tub, and allowing it to pass out of the
female die, when the said movable sides K' fall down into their normal position.
The partially formed tub is now ready for the second or completing operation
(see Sheet 3), the dies for this operation being similar to those shown at Sheet 1, the
male die A having corrugations B on its exterior surfaces at its two sides, whilst
the exterior surfaces at its two ends remain smooth. The female die C which is
composed of suitable sections, is corrugated at D on its two inner sides, whilst the
inner ends of the said die are made smooth, and such die C is also provided with a
separate movable section E forming the base. The unfinished tub having been
placed on the female die C, as shown at Fig. 7, the dies A and C are brought
together, pressing the plate between them, which has the effect of corrugating the
sides and bottom of tub, whilst the folds M at each corner are pressed close to the

page_text: straight ends of the said tub in the manner shown at Fig. 9. The dies A and C
are now brought apart and the lower section E is raised by means of the plunger H,.
thus raising the completed tub out of the female die C.
Any required number of corrugations may be made on the sides of the dies to
suit the required shape of tub to be produced, and the sides of the dies whether
corrugated or plain, are made to taper down towards the base as shown, thereby
assisting greatly in the formation and removal of the tub from the dies.
The plates from which the tubs are to be formed, may be pressed either in a.
hot or cold state, and several operations and different forms of dies may be employed
in order to bring the plate gradually to the required shape.
By making the dies in sections, various sizes of tubs may be formed from one set
of dies; such variation in size of tub produced being effected by adding or
removing suitable sections to or from the main portion of the 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 stamping tubs or other vessels out of sheet metal, the corru-
gated formation of the male and female dies whereby the superfluous metal is
taken up evenly, substantially as described.
2. The combination of the male die A, corrugations B, female die C, corru-
gations D, movable section E, and guide frame F, substantially as and for the
purposes set forth.
3. In machinery for pressing or stamping tubs or other vessels out of sheet metal,.
a lower female die having recesses or spaces in its sides, in combination with an
upper male die, substantially as and for the purposes set forth.
4. The employment of a female die, composed of sections J, J, KK, and having
a lower movable section E, in combination with a male die A, substantially as
shown in Figs. 4, 5 and 6 of the accompanying drawings and for the purposes set.
forth.
5. The employment of a female die C having a movable lower section É, in
combination with an upper finishing male die A, substantially as shown in Figs. 7, 8
and 9 of the accompanying drawings, and for the purposes set forth.
6. The construction and arrangement of machinery for the manufacture of tubs
or other vessels, substantially as described and shown in the accompanying
drawings.
Dated this 7th day of June 1804
BREWER & SON,
London and Leeds, Agents for Applicant.