Apparatus for the Manufacture of Hollow Bodies of Cement or like Substances.
Year: 1888

page_text: PROVISIONAL SPECIFICATION.
Apparatus for the Manufacture of Hollow Bodies of Cement or like
Substances.
We Dr. GEORG BORSCHE Counsellor of State and FERDINAND BRÜNJES, Works
Director, both of Leopoldshall-Stassfurt in the German Empire do hereby declare the
nature of said invention for "APPARATUS FOR THE MANUFACTURE OF HOLLOW BODIES
OF CEMENT OR LIKE SUBSTANCES" to be as follows:-
The apparatus of this invention consists of a mould opening upon hinges and provided
with a perforated bottom. A number of vertical tubes or rods gearing into each other
by toothed wheels fixed on to or in one piece with them are in connection through the
central one of the tubes with a screwed shaft, working through a nut and toothed
gearing up and down so to either enter the whole body of tubes into the mould or to
withdraw them froin the same. The tubes are each furnished with a point at the
bottom to take into and be held in place by the perforations in the bottom of the
mould; they are likewise suitably guided at top.
The cement or like substance which it is desired to form into a hollow body is
mixed with water to a suitable consistency and run into the mould after the tubes.
have been entered and set therein, where it is allowed to remain until it has become
sufficiently hard to bear its own weight without changing its form. The whole of the
tubes are then simultaneously set in rotary motion and raised up out of the mould by
operating the screwed shaft in the desired direction, leaving the formed hollow body
behind in the mould from which it is removed and dried.
CAPITAINE & VON HERTLING,
89, Chancery Lane, London, W.C.,
Agents for the Applicants.

page_text: COMPLETE SPECIFICATION.
Apparatus for the Manufacture of Hollow Bodies of Cement or like
Substances.
We, Dr. GEORG BORSCHE Counsellor of Commerce and FERDINAND BRÜNJES, Works
Director, both of Leopoldshall-Stassfurt in the German Empire 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 apparatus of this invention is shewn in the accompanying drawings in which
Fig. 1 is a part sectional side elevation of the same, Fig. 2 an end elevation, Figs.
and 4 horizontal sections (to an enlarged scale) taken respectively through
lines A B and CD of Fig. 1 and Figs. 5 and 6 horizontal sections to the smaller
scale through lines E-F and G-H of the same figure. A is a casing constructed of
strong plate iron in the top and bottom covers B, B of which, are carried so as to
revolve therein, the upper ends of a group of any suitable number (twenty five are
shewn) of pipes or rods serving as cores. Ca casing with through apertures
immediately opposite those of casing A serving for the parallel guidance of said cores
when these are raised and lowered. All the cores are furnished with a projecting point
at their bottom ends. Dare springs. Ea mould casing with perforated bottom F
into the perforations of which the points at the bottom ends of the cores are pressed.
The mould casing is constructed in two parts or halves to one of which is fixed the
perforated bottom F whilst the other is carried on the fixed part on hinges to allow of
the mould casing being readily opened and closed, Fig. 1 shewing it open and Fig. 2
shewing it closed. Each of the cores has fixed on it or on an extension thereof, a
toothed wheel, the central core from which all the other cores are driven carrying
double wheel G, or it may be two separate wheels. The central core H is carried
upwards in the form of a spindle; at X it is connected by means of a socket H'-
fitted with an engaging and disengaging spindle,--to a single or multiple threaded
rod H to work in screw nut 1" and stayed or guided in boss I of stay I'. The screw
rod has for a portion of its length a vertical groove K (Fig. 2) into which engages
a key L carried by toothed wheel M so that the screw rod will turn in the same
direction as, and with the wheel M. The boss of this latter has a recess N in which a
plate fixed by screw bolts engages and prevents the said wheel from lifting.
a
The double toothed wheel G drives from its lower set of teeth G2, the wheels 1, 2,
3, 4 (Fig. 3) in the same horizontal plane, and from its upper set G³, the wheels 5, 6,
7, 8, (Fig. 4). Wheel 5 in turn drives 9 and 10. Wheel 6, drives 11 and 12.
Wheel 7 drives 13 and 14. Wheel 8 drives 15 and 16. Above wheels 10, 11, 13, 16
of the outer circle of cores which as before stated are driven from 5, 6; 7, 8, are other
wheels 10, 11, 13ª, 16. Wheel 10 engages in and drives 23, 24 in the same
horizontal plane. Similarly wheel 11ª in 19, 20. Wheel 13 in 21, 22, and wheel 16ª
in 17, 18.
The formation of hollow bodies or objects of cement or like substances by means of
the said apparatus is accomplished by mixing the substance to be operated upon with

page_text: so much water as will allow of it being poured into the mould casing E which is done
after the cores have been fixed therein and so as completely to fill up the spaces
between the cores. It it is then allowed to stand some time, the length of which
will be readily determinable after a little practice-until it has hardened or solidified
so far that a block formed of it will bear its own weight. without changing its form.
The wheel M is then set in motion driving the central core H direct, and from this all
the other cores through the several toothed wheels fixed on them or on parts extending
from them. Simultaneously therewith the screw rod H2 ascends through screw
nut and gradually lifts all the cores whilst these are revolving, it being only by
means of these simultaneous revolving and ascending motions that the cores can be
removed from the moulded objects without altering their shape or injuring them.
The moulded objects are removed from the mould casing, dried and applied to any
suitable purpose.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is :
The apparatus for the manufacture of hollow bodies or objects of cement or liko
substances by which a group or system of cores is raised, whilst cach core is revolving,
from out of the nearly hard or hardening material in the mould casing, substantially
as described and shewn.