Improvements in the Manufacture of Projectiles.
Year: 1890

page_text: Date of Application, 18th June. 1890
Complete Specification Left, 18th Mar., 1891-Accepted. 25th Apr., 1891
PROVISIONAL SPECIFICATION.
Improvements in the Manufacture of Projectiles.
1, HENRY SCHLUND, of Aston Lane, Perry Barr, Birmingham, in the County
of Warwick, Engineer, do hereby declare the nature of this invention to be as
follows:-
This invention relates to apparatus employed for the purpose of heating short
the ends of hollow projectiles which may be afterwards closed in, and in carrying
it into effect I prefer to proceed as follows:-
or more
I provide any suitable forin of framework upon which is suitable mechanism or
means for revolving a hollow block or equivalent which is intended to carry the
shell to be operated upon. At its base the shell is adapted to revolve within a
"brick "
preferably made of iron or fire-clay and provided with one
openings preferably two and placed at any desired angle and through which blow-
pipe jets are introduced and operate upon the shell as it is revolved. A suitable
cover may with advantage be provided so as to concentrate the heat as much as
possible on the part of the projectile to be heated and an extractor or device for
removing the shell when finished is provided and preferably operated by a lever
conveniently placed for the operator.
Generally the blow-pipe jets may be arranged opposite to each other but they
may be placed in any suitable relation.
When the shells have been heated they may be closed in by any suitable dies or
equivalent.
Any desired number of shells may be treated at the same time the apparatus
being adapted for this purpose.
Dated this 18th day of June 1890.
W. P. THOMPSON & BOULT,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in the Manufacture of Projectiles.
I, HENRY SCHLUND, of Aston Lane, Perry Barr, Birmingham, in the County
of Warwick, 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 :-
This invention relates to apparatus employed for the purpose of heating short
the ends of hollow projectiles which may be afterwards closed in, and in carrying
it into effect. I prefer to proceed as follows :-
وو
:-
I provide any suitable form of framework upon which is suitable mechanism or
means for revolving a hollow block or equivalent which is intended to carry the
shell to be operated upon. At its base the shell is adapted to revolve within a
55 brick preferably made of iron or fire-clay and provided with one or more
openings preferably two and placed at any desired angle and through which blow-
pipe jets are introduced and operate upon the shell as it is revolved. A suitable
cover may with advantage be provided so as to concentrate the heat as much as
possible on the part of the projectile to be heated and an extractor or device for
removing the shell when finished is provided and preferably operated by a lever
conveniently placed for the operator.
Generally the blow-pipe jets may be arranged opposite to each other but they
may be placed in any suitable relation.

page_text: When the shells have been heated they may be closed in by any suitable dies or
equivalent.
Any desired number of shells may be treated at the same time the apparatus
being adapted for this purpose.
In the accompanying drawings :-
Figure 1 is a vertical section of a machine adapted to carry out this invention
and provided with a single blow-pipe jet.
Figure 2 is a plan of a portion of a similar machine but provided with two
blow-pipes for each shell.
Figure 3 is a vertical section of an apparatus similar to Figure 1 but provided
with two blow-pipes one at each side of the machine.
Figure 4 is a plan similar to Figure 2 but showing one blow-pipe at each side of
the shell as in Figure 3.
Like letters represent like parts throughout the drawings.
A. represents any suitable kind of framework in the top B of which are
provided the openings C to accommodate the shell to be heated. D is a block or
cover provided with a recess or opening E for the shell and an entering recess or
opening F for the passage of the flame to the shell. G is the shell carried in the
block suitably journaled at I in the framework and having the toothed pinion J
upon it and by which it may be revolved. K are steel or other washers by which
the block H may be raised when it falls through wear. L is the blow-pipe supplied
with gas and air under pressure by the pipes M and N in the well known manner.
O is a rod normally just clear of the nose of the projectile G and jointed at P to
the foot lever Q the latter being pivoted at R in the framing A.
In working this apparatus the block H is revolved by the toothed pinion J
engaging with one or more of its neighbours or with another toothed wheel by
which it is set in motion. Or instead of the wheel J pulleys and belts or equivalent
device may be employed. The block in revolving carries the shell G with it
so that the latter also revolves and thus presents continuously and regularly every
portion of its end to the action of the flame from the blow-pipe L. When
sufficiently heated the outer end of the foot lever Q is depressed forcing out the
rod which lifts the shell out of the block H so that it can be removed to the
die or press for further treatment.
To further close in the cavity E in which the base of the shell is heated a
movable cover S may be employed and arranged so as to be removed in any con-
venient manner as by rotating upon the vertical axis so as to turn sideways off*
the block D by sliding longitudinally off it, or, and this is the arrangement shown
in Figure 1 of the drawings, by being raised vertically. In this figure the cover S
is shown bolted to the end of a rod T whose lower end is jointed to an extension
of the foot lever Q. This is a particularly convenient arrangement as by it when
the foot lever is operated at the same time that the projectile G is lifted by the
rod O the cover $ is also lifted but at a greater speed and to a greater extent (by
reason of the increased length of the lever arm from the fulcrum R) so that by
the one movement the cover is taken out of the way and the shell raised.
In Figure 2 the same arrangement is indicated as in Figure 1 it being under-
stood that in either of these figures a single blow-pipe or more than one may be
employed.
Figures 3 and 4 represent similar apparatus excepting that in this case the
blow-pipes instead of being arranged side by side as in Figure 2 are placed
opposite each other the openings F in the block D being also oppositely arranged.
Otherwise the construction and operation are the same in both cases.
It will be seen that the shell is thus well protected from the attack of the
flame excepting at that portion which is required to be heated while the portion
to be heated is not only fully exposed to the attack of the flame but is surrounded
with the block D which may be formed of iron, fire-clay or other suitable material
adapted to retain and reflect the heat as much as possible.
For small shells the vertical arrangement above described and shown in the

page_text: drawings is the most suitable but for large shells which cannot be expelled from
the apparatus by the foot lever it is desirable to have the block H lying
horizontally instead of vertically the shell being carried in the block in a similar
manner and if necessary (and this may also be done in the vertical arrangement)
secured in the block by means of a suitable set screw or other clamping device.
In any case however the upper plate B or equivalent device for protecting those
portions of the shell which it is not desired to heat from the flame would be
employed.
Having now particularly described and ascertained the nature of the said iuven-
tion, and in what manner the same is to be performed, I declare that what I
claim is
I. The method of heating a portion of a projectile consisting in subjecting the
requisite portion of the projectile while revolving to the action of one or more
blow-pipe jets substantially as described and illustrated in the accompanying
drawings.
II. In an apparatus for heating a portion of a projectile the combination with
a revolving block such as H and one or more blow-pipes L of a recessed block
such as D substantially as and for the purpose described and illustrated in the
accompanying drawings.
III. In a machine for heating a portion of a projectile the combination with a
revolving block such as H having a central longitudinal opening of a rod such
as O adapted to be moved by the operator for the purpose of expelling the
projectile substantially as described and illustrated in the accompanying drawings.
IV. In a machine for heating a portion of a projectile and having a revolving
block such as H and recessed block such as D and cover S therefor the com-
bination with the projectile expeller O or its operating lever Q of a rod such as T
carrying the cover S and connected to the said lever or projectile expeller at
a point farther from the fulcrum R than the point P at which the projectile
expeller joins the lever substantially as and for the purpose described and
illustrated in Figure 1 of the accompanying drawings.
V. In an apparatus for heating a portion of a projectile the employment of a
revolving projectile-carrying-block such as H substantially as described aud
illustrated in the accompanying drawings.
VI. In a machine for heating a portion of a projectile the employment of a
protecting plate such as B through which the part to be heated projects substantially
as and for the purpose described and illustrated in the accompanying drawings.
Dated this 18th day of March 1891.
Dated this 18th day of March 1891.
HENKI SCHLUND.
W. P. Thompson & Boult,
Agents for the Applicant.
HENKI SCHLUND,
W. P. Thompson & Boult,
Agents for the Applicant.