IMPROVEMENTS IN CENTRIFUGAL SEPARATING MACHINES AND IN APPARATUS CONNECTED THEREWITH
Year: 1882

page_text: LETTERS PATENT to Friedrich Hermann Felix Engel Civil Engineer and
Patent Agent in the city of Hamburg Germany for an Invention of
"IMPROVEMENTS IN CENTRIFUGAL SEPARATING MACHINES AND IN APPARATUS
CONNECTED THEREWITH A communication to him by Heinrich Petersen,
Engineer, of Hamburg in the German Empire
PROVISIONAL SPECIFICATION left by the said Friedrich Hermann Felix
Engel at the Office of the Commissioners of Patents on the 6th November
1882.
FRIEDRICH HERMANN FELIX ENGEL Civil Engineer and Patent Agent in the
city of Hamburg Germany, "IMPROVEMENTS IN CENTRIFUGAL SEPARATING
MACHINES AND IN APPARATUS CONNECTED THEREWITH a communication to me
by Heinrich Petersen, Engineer of Hamburg in the German Empire
»
This Invention relates to certain improvements in centrifugal separating
machines and in apparatus connected there with and to a certain class of centrifugal
machines used for separating fluids of different specific gravity in which cutters or
peeling off devices are employed for removing one, several, or all separated part or
parts of the fluid out of the machine and has for its object to simplify the
construction and to improve the action of such machines.
The new or improved apparatus employed herein consists of a tube or pipe
furnished in front with a cutting edge which tube is supported by an arm or other
part of the frame in which it can be turned round its own axis as well as be moved
forward and backward. The sharp edge of the tube is led against the rotating ring
of liquid that has to be removed out of the centrifugal vessel and consequently said
liquid is by the cutting edge peeled off from the rotating ring and runs through the
tube out of the machine. As the tube can within the supporting frame be turned
round its axis a new part of the cutting edge can be brought in contact with the
liquid in case this should be desirable either because that one part of the edge is
worse or in case impurities should come before the cutting part of the tool or from
other reasons that may happen.

page_text: The forward and backward motion that can be applied to the tube in its
longitudinal axis enables of adjusting the cutter in its position to the liquid ring
that has to be removed, or to force the cutting edge more or less deep into the
surface of the rotating ring of liquid.
In case the cutting tube is introduced into the interior of the centrifugal vessel
this vessel can by stopping the feeding of the machine with compound liquid be
fully or partially emptied of its contents by gradually introducing the tube deeper
into the centrifugal vessel.
The forward and backward motion of the tube cutter may be executed by giving
the tube an outer thread and by furnishing the support with a corresponding inner
thread. If the tube is then turned by a hand wheel attached to its outer end it
can either be more or less introduced into the rotating vessel towards its inner
circumference or be removed from out the vessel by turning it in reverse direction.
The: forward and backward motion of the tube can also be executed by a rack and
pinion or by lever transmission or other suitable mechanical means well known to
practical engineers.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Friedrich Hermann Felix Engel in the Great Seal Patent Office
on the 5th May 1883.
FRIEDRICH HERMANN FELIX ENGEL Civil Engineer and Patent Agent in the
city of Hamburg Germany. IMPROVEMENTS IN CENTRIFUGAL SEPARATING
MACHINES AND IN APPARATUS CONNECTED THEREWITH ' a communication to ine
by Heinrich Petersen Engineer of Hamburg in the German Empire
"
This Invention relates to certain improvements in centrifugal separating machines
and in apparatus connected therewith and to a certain class of centrifugal machines
used for separating fluids of different specific gravity in which cutters or skimming
off devices are employed for removing one several, or all separated part or parts of
the fluid out of the machine and has for its object to simplify the construction and
to improve the action of such machines.
The new or improved apparatus employed herein consists of a tube or pipe
furnished in front with a cutting edge which tube is supported by an arm or other
part of the frame in which it can be turned round upon its own axis as well as be
moved forward and backward. The sharp edge of the tube is advanced against the
rotating ring of liquid that has to be removed out of the centrifugal vessel and
consequently said liquid is by the cutting edge skimmed off from the rotating ring
and runs through the tube out of the machine. As the tube can be turned round
its axis within the supporting frame a new part of the cutting edge can be brought
in contact with the liquid in case this should be desirable either because that one
part of the edge is imperfect or in case impurities should have come before the
cutting part of the tool or from other causes that may arise.
The forward and backward motion that can be applied to the tube in its longi-
tudinal axis admits of adjusting the cutter in its position to the liquid ring that
has to be removed, or to force the cutting edge more or less deep into the surface of
the rotating ring of liquid.
In case the cutting tube is introduced into the interior of the centrifugal vessel,
this vessel can by stopping the feeding of the machine with compound liquid be
fully or partly emptied of its contents by gradually introducing the tube deeper
into the centrifugal vessel.
The forward and backward motion of the tube cutter may be imparted by giving
the tube an outer thread and by furnishing the support with a corresponding inner
thread. If the tube is then turned by a hand wheel attached to its outer end it
can either be more or less introduced into the rotating vessel towards its inner.
circumference or be removed from out the vessel by turning it in reverse direction.
The forward and back motion of the tube can also be executed by a rack and
pinion or by lever transmission or other suitable mechanical means well known to
practical engineers.
In order that the said Invention may be well understood there is annexed hereto
a sheet of drawings wherein the Invention is shown as applied to a centrifugal
drum C fixed to the end of a shaft D rotating in horizontal direction. Fig 1 being
a front view partly in section and Fig 2 a sectional plan of drum and cutter.
The cutter A consists of a straight tube having a sharp cutting edge e which
tube is supported or carried in a bracket or framing S in which it can be turned
round its own axis by a hand wheel R lever or other suitable device so as to
bring a new part of the cutting edge in contact with the liquid that has to be
removed out of the drum if the part before used is worn or in case this is desirable
from any other reason. The grooving of the front part of the tube has for its
purpose to prevent parts of the liquid that would by splashing or otherwise come

page_text: onto the outer surface of the tube; to run down along this surface; such parts of
liquid will drip off from the grooves.
For the purpose of emptying the centrifugal drum partly or wholly by the
cutter A the latter can be moved forward in its supports so as to enter the drum
more or less. This may be done by giving the tube an outer thread o to fit a
female thread m of the support as is shown in Fig 2 of the drawings, in conse-
quence of which the cutter when turned in one direction will enter the drum more
or less whilst when turned in the other direction it will be removed from the
drum. In the drawing in Figure 1 the cutter is shown in its position as peeling
off the lighter liquid placed nearest to the axle of the machine whilst in Figure 21
its position is shown when nearly all the liquid contained in the drum is drawn off
by this cutter, The support S is pivoted onto a bolt Z round which it can be
swung to bring the cutter into or out of acting position and t is a screw to keep
the support in position when the cutter is in working position,
Instead of a screw thread a rack and pinion may be used to move tube A 1
forward or backward within support S. In that case a concentric tubo is used in
which tube A is held turnable in either direction. The outer concentric tube is
guided in a support and is furnished with a rack into which a pinion gears that
can be turned by a band-wheel or crank.
Any other known device for sliding the tube A in its support may be used.
Having now described the nature and particulars of the said Invention I would
have it understood that I am aware that tubes have been used before for tho
purpose of removing liquids out of centrifugal apparatus and I do not claim this
generally but what I claim is;-
Firstly. The application of a tube furnished with a cutting edge in front and
turnable round its own axis in a support or bracket for the purpose of changing
the acting part of the cutting edge without interrupting the operation of the cutter
as herein set forth and shown by the drawings.
Secondly. The combination of a cutting tube as herein specified with a mechanical
arrangement, as a thread, rack and pinion or levers, for the purpose of sliding such
cutter tube forward or backward in its support, to draw off more or less of the
liquid contained in the drum as and for the purpose herein described in reference
to and shown by the accompanying drawings,
In witness whereof I the said Friedrich Hermann Felix Engel have hereunto
set my hand and seal this first day of May in the year of our Lord One
thousand eight hundred and eighty-three
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