Improvements in or relating to Pumps.
Year: 1899

page_text: Date of Application, 8th Nov., 1899-Accepted, 20th Jan., 1900
WORLDPE DIECTIVATION.
Improvements in or relating to Pumps.
I, WILHELM HANEMANN, of Friedrichsfelderstrasse 57, Mannheim, in the
Empire of Germany, Mechanic, 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 improvements in or relating to suction apparatus or
pumps for liquids intended principally for use in breweries, by which the
liquid especially beer in consequence of the even working of the apparatus is
conducted to the filtering apparatus or other place free of froth thereby pre-
venting the escape or loss of carbonic acid. This purpose is obtained by the
peculiar movement of the piston of the pressure cylinder and by the manner
of reversing of the action of the same.
In the accompanying drawing the invention is illustrated:
Fig. 1 is a sectional elevation, Fig. 2 a plan view and Figs. 3, 4 and 5 show
details.
In the pressure cylinder A of the suction apparatus pump the piston B works,
the rod C of which is scrow threaded for a certain distance in order to be moved
by means of a female screw formed by the nave of worm wheel D gearing with
the worm D. The worm D' is driven by a conical wheel W₁seated on the
axle of the same and in the one or other direction of revolution accordingly as
the one or other of the conical wheels W which are in gear with the wheel W',
is coupled with the driving shaft II. The shaft II can be driven by any suit-
able means, such as fast and loose pulleys.
The clutches W on the shaft H are thrown in and out of gear by means of
lever-rods actuated by mechanism for regulating and reversing the action.
The reversing is dono by the piston rod C by means of abutments connected to
same and these abutments are formed by the short tubular stems E³ of
pistons moving lightly in cylinders E carried by arm E from piston rod C
and put by means of hoses in connection with the pressure pipe of the liquid
coming out of the cylinder A.
The pressure of springs Es (Fig. 5) on the backs of the pistons E³ tend to
draw the stems E further into their encasing cylinders E, while the pressure
of the liquid on the fronts of the pistons Etends to push the stems further out.
The abutments formed by the outer ends of the stems operate alternately
against an abutment F during the to and fro movement of the piston rod C
which abutment is arranged in the middle of the connecting rod F of the
disengaging levers of the reversing gear. By means of a bolt Gmovable
in the sockel G of the connecting piece and having chamfered edges and
an angular piece of the bed plate of the apparatus to co-operate with the
bolt the reversing is ensured.
The manner of working the apparatus is as follows:-
The cylinder A sucks the liquid to be filtered out of the receiver containing
the same, for example from vessel N (Fig. 1) through union P pipe M and

page_text: entrance of the valve box S (Fig. 3), and presses it into a pipe T which is
connected by hoses, (not shown) with the cylinders E¹.
The apparatus is put in action, one or other of the two toothed wheels W
driving the toothed wheel W. The toothed wheel W turns the worm D' to
the right or left and the worm wheel I) and the piston rod C are put in action.
By this means the to and fro movement of the piston B is done without sudden
movement, and the foaming of the liquid pumped thereby, is as much as
possible prevented.
If by any reason over pressure is caused which shows on the manometers
arranged on the cylinders E', the piston will be caused to make short strokes
in the cylinder as the springs in the cylinders are more compressed by the
over pressure, the stems Ex project more when the springs are so compressed,
and the stems meet the abutment of the clutch regulating motion sooner 50
that the clutches W are sooner thrown out of gear on the one side and re-
engaged on the other. The result is of course shorter strokes of the piston in
the pressure cylinder which continue until the over pressure ceases, the speed
of the flow of the liquid being thus regulated.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed I declare that what
I claim 18:
Improved suction apparatus or pump intended principally for use in breweries
in which the piston of the pressure cylinder is moved to and fro by a worm-wheel
gearing, the piston rod being provided with a thread which gears in a female
screw formed by the nave of a wormed wheel, the worm of which is turned in the
one or other direction by means of a reversing mechanism whereby this latter is
sooner or later thrown out of and into gear when the pressure alters by means
of abutments arranged on the piston rod with the intervention of regulating
pistons under spring pressure and connected with the pressure pipe by means
of hoses so that the strokes of the piston in the pressure cylinder are lengthened
or shortened, thus regulating the speed of forwarding the liquid.
Dated this 8th day of November 1800
HERBERT HADDAN & Co.,
Agents to Applicant 18, Buckingham Street, Strand, W.C.