Improvements in the Method of Moulding Blocks of Concrete with a Metal Facing on one or More Sides for Fortification and other similar Purposes.
Year: 1888

page_text: Date of Application, 23rd July, 1888
Specification Accepted, 21st Sept., 1888
Improvements in the Method of Moulding Blocks of Concrete with a
Metal Facing on one or More Sides for Fortification and other
similar Purposes.
I, JOSEF KLEINPETER of the town of Leobersdorf, near Vienna, Austria, Manager,
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 present invention is to provide large blocks of concrete, cement
and the like with an armour plating in order to protect such said blocks against the
destructive effects of all kinds of projectile when employed for fortification or other
similar purposes.
The importance of the improvements effected by my invention will be clearly
evident on considering the fact that the concrete or cement blocks, for instance, of
armour plated shields or targets are almost invariably demolished when a shot or
projectile hits the target.
The essential feature of my invention consists in simultaneously providing with
armour either the upper, lower or longitudinal surfaces of one or more concrete or
other blocks, according to requirement or as may be determined by the position the
blocks are intended to occupy in the fortification of armoured shields or targets.
In the accompanying drawings,
Figure 1 represents the armour plating p applied to only one side of a concrete
block.
Figure 2 represents a block having the armour plating p applied to two sides,
combined with a block with only one armoured side.
Figure 3 illustrates a concrete or cement block protected by armour on from three
to five sides.
In order to carry my said invention into effect I proceed as follows:
The armour plating which is intended to protect the concrete or cement block, is
cast in such manner as to be provided with dovetail shaped, projecting ledges or ribs,
such as a a, as represented in the accompanying drawings.

page_text: The said plating p is now brought into a form or mould in such manner that three
sides of the concrete or cement block or hardened mass to be subsequently produced
will be formed by the walls of the mould.
The hollow space created by the armour plating and the walls of the mould is filled
with a hardening or binding mass or material such as, for instance, Concrete or Beton
or Concrete mixed with stones, cement etc., then stamped down by any suitable
appliance.
If desirable the ribs or projecting ledges a a can be omitted but this would decrease
the strength of the connection between the armour plating and the concrete or other
block.
In the case of plating only one side of a block, the mould must have four walls or
sides, if, however, the armouring is to extend over more than one side of the block it
naturally follows that the walls of the mould must be decreased in number according
to the number of sides armoured, that is to say, a block plated on five sides does not
require the employment of a mould as in this case the block is entirely surrounded by
armour plates.
It will be evident that the use of my improved armour plated blocks for military
purposes is not limited to targets alone but that the same can be employed with like
good advantage in all cases where concrete or cement walls and such like, (whether
over or below the level of the ground,) are likely. to be subjected to the effects of a
bombardment.
Having now particularly described and ascertained the nature of my said invention
I declare that what 1 claim is :-
The improved method, as herein described, of armouring blocks of concrete, cement,
beton and the like, for fortification purposes, consisting in providing armour plates or
shields with ribs or projecting ledges, such as a a, placing these plates in a mould, filling
this mould with a hardening mass or material such as concrete or beton or beton mixed
with stones or cement etc. and stamping to a firm and compact state, substantially as
described in the foregoing specification and shown on the accompanying drawings.
Dated this 23rd day of July 1888.