IMPROVEMENTS IN THE METHOD OF AND IN APPARATUS FOR RAISING LIQUIDS, BLOWING AIR, PROPELLING SHIPS, KNEADING DOUGHY MASSES, FORWARDING GRAIN, AND OTHER LIKE PURPOSES."
Year: 1876

page_text: "
LETTERS PATENT to Frank Wirth, of the Firm of Wirth and Company, Patent
Agency, of Frankfort-on-the-Main, in the Empire of Germany, for the
Invention of IMPROVEMENTS IN THE METHOD OF AND IN APPARATUS FOR
RAISING LIQUIDS, BLOWING AIR, PROPELLING SHIPS, KNEADING DOUGHY
MASSES, FORWARDING GRAIN, AND OTHER LIKE PURPOSES." A communication
from George Sigl, Manufacturer, residing at Vienna, in the Empire of Austria,
PROVISIONAL SPECIFICATION left by the said Frank Wirth at the Office of
the Commissioners of Patents on the 4th February 1876.
FRANK WIRTH, of the Firin of Wirth and Company, Patent Agency, of Frankfort-
"IMPROVEMENTS IN THE METHOD OF
on-the-Main, in the Empire of Germany.
AND
IN APPARATUS FOR RAISING LIQUIDS, BLOWING AIR, PROPELLING SHIPs,
KNEADING DOUGHY MASSES, FORWARDING GRAIN, AND OTHER LIKE PURPOSES."
A communication.
My Invention relates more particularly to certain improvements in the adaptation
of screws for raising liquids, blowing air, propelling ships, kneading doughy inasses,
forwarding grain, and other like purposes, and consists in combining two or more
screws in such a manner that their threads fit one in the other, and they are in
consequence of this arrangement always touching at some one point; also by
placing on a revolving axle an endless screw, the threads of the latter fitting into
the teeth of a worm wheel, the axle of which is placed at right angles to the shaft
of the screw.
The above-mentioned are the most approved methods of adapting my Invention,
but I do not confine my Invention to simply these two apparatuses.
The first of the aforesaid apparatuses consist of two screws, of which the one has
a right and the other a left-hand thread; these screws are placed in a wind-tight
fitting case with their axles parallel, and the threads of each fitting in the grooves
of the other along the line of contact. Both screws are made to revolve in opposite
directions. This being the case it will be readily seen that water, air, doughy mass,
and the like, being taken up at one end of the case is, so to say, screwed up to the
other.
E
The same ends are obtained by using my Invention as described in the second

page_text: Thus
apparatus, which consists of an endless screw running in a worm wheel in such a
manner that the threads of the screw fill up wind-tight tho spaces between the
teoth of the wheel, the screw itself being surrounded by a tight-fitting case.
the grooves of the screw being closed in all direction forwards the water, air, mass,
and the like taken up at one end of the casing to the other.
As in the first arrangement the threads of the right and left hand screws, and
in the second arrangement the teeth of the worm wheel and threads of the endless
screw follow continuously one after the other, and reverse motion of the mass taken
up is thus always impossible, a great quantity of water, air, doughy mass, and tho
like can be forwardod undor high pressure, and at great speed, by a very small
amount of power.
The apparatus can be consequently used in preference to others for the following
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by the
said Frank Wirth in the Great Seal Patent Office on the 3rd August 1876.
FRANK WIRTH, of the Firm of Wirth and Company, Patent Agency, of Frankfort-
on-the-Main, in the Empire of Germany, "IMPROVEMENTS IN THE METHOD OF AND
IN APPARATUS FOR RAISING LIQUIDS, BLOWING AIR, PROPELLING SHIPS, KNEADING
DOUGHY MASSES, FORWARDING GRAIN, AND OTHER LIKE PURPOSES." A communi-
cation from George Sigl, Manufacturer, residing at Vienna, in the Empire of Austria.
My Invention relates more particularly to improvements in the adaptation of
screws for raising liquids, blowing air, propelling ships, kneading doughy or plastic
masses, and for other like purposes.
According to this Invention I place on a revolving axle an endless screw, the
threads of which fit into the teetli of a worm wheel, the axle of the latter being
placed at right angles to the shaft of the screw.
The endless screw runs in the worm wheel in such a manner that the threads of
the screw fill up air-tight the spaces between the teeth of the wheel, the screw itself
being surrounded by a tightly fitting case. Thus the grooves of the screw being
closed in all directions propels forward the water, air, or mass of material taken up at
one end of the casing to the other.
The said apparatus may consequently be used very advantageously for the
following purposes, that is to say :-
As a suction and forcing pump for liquids.
As a blower and ventilator.
As a propelling machine for ships in lieu of the screw propellors and paddle
wheels used herein-before.
And, as a press for kneading doughy or plastic masses for bread and bricks,
tiles, and the like.
Having now explained the principle of my Invention, I will proceed with a full
description thereof, referring to the Drawings which illustrate the method of prac-
tically working my Invention, as herein-before explained.
Figure 1 represents a vertical section of a double apparatus constructed in
accordance with my Invention.
Figure 2 is a vertical section of a single apparatus constructed in accordance with
the said Invention.

page_text: Figure 3 represents a section on the line a, b, Figure 2.
S, S, Figure 1, are two endless screws with right and left hand threads fitting in
a wind or air-tight case. On the spindle A is a belt wheel, by which motion is
transmitted to the screws. On both sides of the pulley the spindle runs through
stuffing boxes to prevent the entrance of the external air into the cases. The teeth
of the worm wheels R, R, fit exactly into the grooves of the screws, the latter
fitting the walls of the casing, wind or air tight, thus separating the grooves one
from the other, and forming a partition between the suction and delivery pipes.
The worm wheels R, R, resting on movable beds, and having strong pivots, are
enabled to withstand the pressure exercised upon them.
The single apparatus represented in Figure 2 is substantially of the same con-
struction as that shown in Figure 1.
Figure 3 shews the manner in which the worm wheel R gears with the endless
screw S.
The operation of this apparatus is very simple. At each revolution of the screw S
the contents of a groove of the endless screw is forwarded by the gearing tooth
from the suction to the delivery space of the casing. The working capacity of the
apparatus depends on the depth and breadth of the grooves and numbers of revo-
lutions in a given space of time.
"
Having thus fully described my Invention, and the manner in which the same
is to be carried into practise, I wish it understood that I do not limit myself
to the peculiar arrangements shown in the Drawings and explained in the abovo
Specification, and that I claim,―
First. An arrangement allowing the continuous division or separation of the
grooves of a screw or screws, which division or separation may be effected by a worm
wheel, a rack, or other means, in the manner and for the purpose specified.
Second. In combination with a wind or air-tight casing, the screw S, Figure 2,
and worm wheel R, as above set forth.
Third. In combination with a wind or air-tight casing, the screws S, S, Figure 1,
worm wheels R, R, and belt wheel fixed on the spindle A, as above set forth.
In witness whereof, I, the said Frank Wirth, have hereunto set my hand and
seal, this Nineteenth day of July, in the year of our Lord One thousand
eight hundred and seventy-six.