Metal Receptacles.
Year: 1886

page_text: Date of Application, 24th May, 1886.
Complete Left, 23rd Feb., 1887.
Complete Accepted, 25th Mar., 1887.
similar Sheet Metal Receptacles.
We, WILLIAM JOB HOWCROFT, of No. 24 Alpine Road, Rotherhithe in the County
of Surrey, Iron Plate Worker, and ARTHUR CHARLES MOORE, of 220 Anerley Road,
Anerley in the County of Surrey; Galvanizer,-do-hereby declare the nature of this
invention to be as follows:-
Our.invention relates to an improved construction of machinery for the manufacture
of sheet metal buckets and similar sheet metal receptacles, the parts of which are
secured together by folded joints.
For this purpose a mandril having the configuration of the body of the bucket or
other receptacle is mounted on a vertical spindle receiving rotary motion by bevil
gearing from a driving shaft; a second mandril or roller having the counter configura-
tion of the first inandril is mounted loose on a spindle carried by a lever by which it
receives either a vertical or horizontal motion so as to bring the counter mandril to
bear with pressure against the surface of the first mandril. Upon the latter are
placed the bent plates for forming the bucket, having their meeting edges bent over
and hooked into each other. The counter mandril is then made to bear with pressure
against the plates on the rotating mandril so as to squeeze the folded joints tightly
together. A small roller mounted on the end of a lever is then made to bear upon
the upper edge of the plates so united, so as to splay the edge outwards somewhat,
after which a circular plate or disc forming the bottom of the bucket, with its peri-
phery turned up at an angle is placed upon the said splayed edge, and a circular die
plate with bevilled periphery mounted upon a movable arm of the machine is brought
over the bottom plate of the bucket and is moved downward by a screw, so as to press
the edges of the bottom and the bucket between it and a bevilled surface formed on
the upper end of the counter mandril to press them closely together, the outer edges
of the parts being slightly curved over outwards. A grooved roller carried by a lever

page_text: is then brought to bear upon these edges so as to, bend them over and thus secure the
bottom to the bucket by a close folded joint.
Another roller carried by a lever mounted on a slide is in like manner made to bear
against the lower edge of the bucket so as to splay it outwards, and, after fitting a
wire ring at the bend, the edge is turned over such ring by another grooved roller on
a lever. The formation of the bucket, with the exception of the ears and bail, being
thus completed it is removed from the mandril.
The attachments of the levers and mandrils are made adjustable, and the mandrils
are arranged to be changed to suit buckets or other receptacles of different sizes or
configurations.
ABEL & IMRAY,
28, Southampton Buildings, London, W.C.,
Agents for the Applicants.

page_text: similar Sheet Metal Receptacles.
We, WILLIAM JOB HOWCROFT of No. 24 Alpine Road, Rotherhithe in the County
of Surrey, Iron Plate Worker, and ARTHUR CHARLES MOORE, of 220 Anerley Road,
Anerley in the County of Surrey, Galvanizer 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:-
Our invention relates to an improved construction of machinery for the manufacture
of sheet metal buckets and similar sheet metal receptacles, the parts of which are
secured together by folded joints.
The construction and mode of operation of this machine will be readily understood
on reference to the accompanying drawings in which Fig. 1 shews a front view and
Fig. 2 a side view of the machine.
A mandril A having the configuration of the body of the bucket or other receptacle
is mounted upon a vertical shaft B receiving rotary motion from a driving shaft C
with fast and loose pullies. A second mandril or counter roller D having the counter
configuration of A is mounted on a spindle E pivotted to the framing F at E' and
connected at its upper end by a link G to a lever H pivotted to the top of the
framing F by the downward motion of which, lever the counter mandril D is
moved laterally so as to bear with pressure against the surface of mandril A. Upon
the latter are placed the blanks I Fig. 3 for forming the bucket, being bent plates
having their meeting edges bent over so as to hook into each other, and the blank is
forced down tight on to the mandril by means of the circular bevilled die plate J
carried by a screw spindle K screwing through an arm L pivotted to the top of the
framing F so that it can be swung clear of the mandril, and having a suitable butt
joint or stop for bringing it accurately into position.
When the blank is in position on the mandril A, the counter mandril D is made to
press against it as described, thereby squeezing the folded edge of the blank tightly
together. The movement of the lever H for this purpose may be effected either by a
treadle M and connecting rod N as shewn or by any other suitable means. The
bevilled die plate J is then forced down by means of its screw, into the upper end of
the blank I, which projects somewhat above the upper end of the mandril A whereby
such edge will be splayed outward somewhat as shewn at IFig. 4, the bevilled edge
of the die being made to press such edge between it and the correspondingly bevilled
upper end of the counter mandril D, so as to obtain the exact amount of splay
required. The die J is then raised sufficiently to allow of the previously forined
bottom plate O Fig. 5 of the bucket being placed with its circular groove upon the
upper edge of I, whereupon the die J is again screwed down so as to hold the plate
in position, and a grooved roller P carried by a lever Qadjustably pivotted to the
framing F then made to bear against the projecting edge of the plate O and to bend
0

page_text: it round the splayed edge I¹ of the blank so as to form a close joint therewith, as
shewn at Fig. 6.
A second bevilled or grooved roller R, adjustably carried by a lever S is then made
to bear against the inside of the lower edge of I so as to splay this edge outwards as
shewn at 13 Fig. 4, after which a third grooved roller T carried by a lever U pivotted to
the framing F is made to bear against the splayed lower edge so as to bend it round
and form a bead round the open end of the bucket, as shewn at Fig. 6. If desired, a
wire ring may be placed upon the bevilled edge I before it bending round, so as to
be enclosed.in and thus strengthen the bead..
The bucket being so far completed, the die J is turned aside and the bucket is
removed from the mandril, and another blank is introduced.
The mandrils A, D, and die J are arranged so as to be changeable to suit buckets
of different shapes and sizes.
Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed, we declare that what we claim is :-
1. The use for manufacturing sheet metal buckets and similar sheet metal
receptacles of a machine wherein a mandril such as A for carrying the blank of the
bucket operates in combination with a counter mandril or roller such as D for
compressing the longitudinal folded joint of the blank, a bevilled die plate J for
splaying outwards the bottom edge of the blank, and a grooved roller such as P for
bending the grooved edge of the bottom plate round the splayed edge so as to form a
tight joint therewith, substantially as herein described with reference to the accom-
panying drawings.
2. In combination with the machine for manufacturing sheet metal buckets such as
is referred to in the preceding claim, the use of a grooved or bevilled roller such as R
for splaying the edge of the upper end of the bucket, and a grooved roller such as T
for bending round the said splayed edge so as to form a bead, substantially as herein
described with reference to the accompanying drawings.
Dated this 23rd day of February 1887.
ABEL & IMRAY,
Agents for the Applicants.