IMPROVEMENTS IN MACHINERY FOR THE PRODUCTION OF HOLLOW MOULDED FORMS IN METAL
Year: 1881

page_text: LETTERS PATENT to Ebenezer Hoskins, of Birmingham, in the County of
Warwick, Manufacturer, and Charles Harvey, of the same Place, Manager, for
an Invention of "IMPROVEMENTS IN MACHINERY FOR THE PRODUCTION OF
HOLLOW MOULDED FORMS IN METAL."
PROVISIONAL SPECIFICATION left by the said Ebenezer Hoskins and
Charles Harvey at the Office of the Commissioners of Patents on the
8th September 1881.
EBENEZER HOSKINS, of Birmingham, in the County of Warwick, Manufacturer,
and CHARLES HARVEY, of the same Place, Manager. "IMPROVEMENTS
MACHINERY FOR THE PRODUCTION OF HOLLOW MOULDED FORMS IN METAL."
IN
This Invention refers to improved machinery for turning or spinning hollow
moulded forms in metal, such forms, for instance, as bedstead and cornice pole
mounts and the bodies of tea and coffee pots and other similar articles. The
machinery consists of a strong frame similar to a lathe carrying spindles and
driving pulleys, and upon the upper ends of two such spindles are fixed rolls whose
peripheries are cut to the section or profile required to produce the moulding or
profile of the article. In one form of the machine two such rolls are used, a large
one and a small one. The metal blank stamped into a conical form or shell with
straight tapered sides is placed over the smaller roll, which is then advanced by a
slide up to the larger one and both rolls are then driven in the same direction, the
result being that the conical shell is forced into the forms on the rolls and thereby
moulded. It is then removed from the smaller roll and finished. In another form
of the machinery three rolls are employed, one moveable on a horizontal plane on a
slide, and the conical shell is dropped between the rolls, which rolls are then
caused to revolve and spin the moulding on to the shell; or by a third arrange-
ment a series of consecutive rolls is employed, each pair taking down the shell
gradually.
Other forms than tapered ones may be similarly produced.

page_text: SPECIFICATION. in pursuance of the conditions of the Letters Patent filed by
the said Ebenezer Hoskins and Charles Harvey in the Great Seal Patent
Office on the 7th March 1882.
EBENEZER HOSKINS, of Birmingham, in the County of Warwick, Manufacturer,
and CHARLES HARVEY, of the same Place, Manager. "IMPROVEMENTS
MACHINERY FOR THE PRODUCTION OF HOLLOW MOULDED FORMS IN METAL."
IN
This Invention refers to improved machinery for turning or spinning hollow
moulded forms in metal, such forms, for instance, as bedstead and cornice pole
mounts and the bodies of tea and coffee pots and other similar articles. The
machinery consists of a strong frame similar to a lathe carrying spindles and
driving pulleys, and upon the upper ends of two such spindles are fixed rolls whose
peripheries are cut to the section or profile required to produce the moulding or
profile of the article. In one form of the machine two such rolls are used, a large
one and a small one. The metal blank stamped into a conical form or shell with
straight tapered sides is placed over the smaller roll, which is then advanced by a
slide up to the larger one and both rolls are then driven in the same direction, the
result being that the conical shell is forced into the forms on the rolls and
thereby moulded. It is then removed from the smaller roll and finished.
In another form of the machine three rolls are employed, one moveable in a
horizontal plane on a slide, and the conical shell is dropped between the rolls,
which rolls are then caused to revolve and spin the moulding on to the shell; or by
a third arrangement a series of consecutive rolls is employed, each pair taking
down the shell gradually. Other forms than tapered ones may be similarly
produced.
.
Figure 1 represents one form of the machine in side elevation; Figure 2, a
longitudinal section; Figure 3, a cross section; and Figure 4, a plan. B, B, and H
are revolving rolls made in one or more parts and turned to the desired shape for
forming the pattern-on-a-mount-or-other-article-required-to-be moulded. The
rolls B, B, are driven on spindles A, A, by the pulleys A¹. The roll H may either
be driven by belt or run loose on the spindle I. The rolls B, B, and spindles A, A,
are made to approach or recede from each other as it is necessary to adjust them
according to the size of the article under operation; this is done by means of the
eccentric bos wheels D and D', which wheels are made to revolve wholly or in part
of a revolution by the toothed pinions F and band wheel F', so that by altering
the position of these wheels we open or close the rolls B, B, to the desired distance
from each other. The roll H attached to the spindle I and arm G¹ works on a
slide G which is worked by levers and connections K and K₁; these levers and
connections are moved backwards and forwards by the cam M driven by the
pulleys N and gear wheels 0 and O¹, so that any pressure may be given to the
mount or other form revolving between the rolls by forcing the roll H against it,
or this slide G may be worked by hand lever only and may be made adjustable to
the size of the article under operation by the sliding joint P; C, C, are bearings
carrying the spindles A, A, and are adjusted by the hand wheels and screws C¹;
E is the framework or casing of the machine.
Figures 5 and 6 represent, another form of machine for shaping mounts and
other hollow forms; it consists of a frame A having suitable receivers and holder
for carrying a series of revolving spindles; two of these spindles are shewn at B; B,
and another at C. The spindle C is made adjustable so that it may be made to
approach or recede from the roll spindles B, B, and the rolls D. The rolls D have
any desired ornamental design turned on them corresponding to the pattern
intended to be produced on the mount or article under operation. Another roll E

page_text: of similar design revolving with the spindle C is driven by hand or otherwise by
the pulley F, and is caused to press against the roll D by means of the hand
lever G and links H, H; these links are made adjustable by means of the shifting
joint I. The mount J is placed upon or over the roll E, and by moving the hand lever G
the roll E and mount J are forcibly pressed against the rolls D, D; by this means
we obtain a pressure internally and externally on the article revolving between the
rolls. We also propose using other spindles carrying suitable rolls to work in con-
junction with the rolls D and E, these spindles to revolve either in front or behind
the last named rolls, and they may be made to adjust to any angle relatively to the
spindles B and C, so as to suit the various shapes of the articles upon which we
desire to form the pattern.
Figure 7 is another form of machine for the same purpose as those already
described; it consists of a frame A with suitable bearings and attachments for
carrying one, two, or more spindles, and is provided with a screw I; or a lever or
cam action may be employed to give a lateral or end thrust to one or more of the
spindles; B is one of the main spindles driven by the pulley C. On this spindle is
secured and revolves with it a roll D of conical shape. Another roll E of similar
shape to that marked D revolves loosely on the spindle B, but in the opposite
direction to D. One or more spindles, one of which is shewn at F, carry smaller
rolls H the shape to be produced, and are held in position and made adjustable by
suitable attachments to the frame A. A series of these spindles may be arranged
at right or any other convenient angles round the spindle B, so that a number of
articles may be operated upon at the same time instead of driving the rolls D
and E on one spindle we propose in some cases to carry the two main rolls
on separate spindles, so that we may adjust them at any desired angle to each
other.
Figure 8 shews a modification of another form of roll, the ornamental design
being made on the internal diameter of the roll A. Another roll B of smaller
diameter is caused to revolve within the roll A. Two smaller rolls C running
loosely on guide studs are made to press against the mount; one roll would press
against its outer diameter and the other against its inner diameter, thus causing
the mount to take the design formed on the rolls A, B, and C; or the same result
may be obtained by using one small roll B, Figure 9, running loosely on a
stud C.
In Figure 10 the action is the same as that described in Figure 5, but with two
rolls only instead of three.
Having thus described the nature of our said Invention, and the manner in
which the same is to be carried into effect, we wish it to be understood that we do
not limit ourselves to the precise details of the machine herein described and
illustrated.
But we claim the combination and arrangement of moulding rolls with
their gearing and adjusting appliances formning machinery for the production of
hollow moulded forms in metal, substantially as herein more fully set forth and
specified.
In witness whereof, we, the said Ebenezer Hoskins and Charles Harvey, have
hereunto set our hands and seals, this Second day of March, in the year of
EBENEZER HOSKINS. (I.S.)
CHARLES HARVEY.
(L.S.)