IMPROVEMENTS IN STOVES FOR SINGEING HOGS
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 STOVES FOR SINGEING HOGS."-A communication from
abroad by Johann Heinrich Koopmann and Johann Ditmer Koopmann,
trading under the Firm of J. D. Koopmann, in the City 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 20th January
1882.
FRIEDRICH HERMANN FELIX ENGEL Civil Engineer and Patent Agent in the
City of Hamburg, Germany. IMPROVEMENTS IN STOVES FOR SINGEING HOGS."
A communication by Johann Heinrich Koopmann and Johann Ditmer Koopmann
trading under the Firm of J.D. Koopmann in the City of Hamburg in the German
Empire.
This Invention relates to improvements in stoves for singeing hogs to ensure
continuous action and has for its object to facilitate and improve the work
and increase the production in comparison with stoves hitherto used for this
purpose.
The improved stove is built of bricks in rectangular shape, and is enclosed by
cast iron covering plates lined with fire bricks and fire clay. This stove has fire
places on opposite sides preferably two on one side and one fire-place on the
opposite side arranged in height between the two fire places aforesaid. The flame
or heating gases pass from the respective fire places through grates formed of fire
proof material into the singeing-room or space of the stove and from there through
a flue or flues into the chimney.
The stove has two openings at the ends of the singeing-room which openings are
closed by two turning-doors furnished with four wings forming the same number
of compartments of which one compartment of each door is enclosed by a corre-
sponding cast iron quadrant attached to the outer wall of the stove. Parallel to

page_text: the singeing-room and on the top of the stove is placed a shaft which can be
moved from one side of the stove by a rack-wheel and chain and by means of bevil
gears the movements of the shaft are transported to one of the turning doors that
forms the entrance into the singeing room whilst the opposite door is not in
connection with the above shaft.
The bodies of the hogs or carcases are each suspended by means of a cross-bar
and wheel on a rail or iron bar placed inclined, are moved towards the outer wing
of the entrance door and as soon as the operator turns the shaft by pulling the
chain of the rack-wheel one carcase enters the compartment formed by the turning
door and cast iron quadrant.
The rail is passed in inclined plane through the stove and by a further pull of
the chain the door is turned for another quarter of a circle and the carcase enters
the singeing room where it is singed by the heating gases whilst passing through
this room.
At same time while entering the singeing room another carcase runs
into the compartment just emptied and in a continuous course the stove is filled
with carcases placed one beside the other and each suspended on the rail. By
means of stops moved by the outer shaft the wheels, or pulleys carrying the
different carcases are stopped during the time that the shaft stands still but as
soon as the latter is turned all the stops are lifted for a moment allowing sufficient
time for a new carcase to enter the stove and for all the carcases to pass forward a
certain distance after which all wheels and carcases are again arrested by the stops
falling down again.
The outlet door begins to turn when the first carcase has arrived at the end of
the singeing room by pressure of this body and as the rail is prolonged outside the
stove and continued in inclined position the singed carcases one after the other
leave the stove without assistance further than by merely pulling the chain of the
rack wheel as before described. For cooling the rail as far as the latter is passed
through the stove it may be combined with a tank containing water.

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 20th July 1882.
FRIEDRICH HERMANN FELIX ENGEL Civil Engineer and Patent Agent in the
City of Hamburg Germany. "IMPROVEMENTS IN STOVES FOR SINGEING HOGS"
A communication by Johann Heinrich Koopmann and Johann Ditmer Koopmann
trading under the Firm of J. D. Koopmann in the City of Hamburg in the German
Empire.
This invention relates to certain improvements in stoves for singeing hog-
carcases to ensure continuous action and has for its object to facilitate and improve
the work and to increase the production in comparison with stoves hitherto used
for this purpose.
The improved stove which is built of bricks (partly of fire-proof material) is
of rectangular or other convenient shape and may be enclosed by cast-iron covering-
plates.
At different heights and preferably arranged on opposite sides are fire-places
from which the flames or heating gases are passed into the singeing-room and are
further carried through flues into the chimney.
'
On those sides of the stove that are not furnished with fire places entrance and
outlet openings for the carcases are arranged and these openings are each closed by
a turning door furnished with four or more or less wings forming the same number
of compartments of which one compartment of each door is enclosed by a corre-
sponding cast iron quadrant or mantle attached to the outer wall of the stove.
The bodies or carcases of the hogs are each suspended by means of a cross-bar
and wheel on a rail or iron bar passed through the stove and extending outside
the stove sufficiently to bring the carcases on to this rail or bar and to remove it
from the same after having passed through the stove. The rail is preferably
placed in an inclined plane so that the carcases once brought on to the rail pass
through the stove without further assistance whilst each carcase can at certain
intervals be arrested in its forward motion by stops or other arrangement moved
by an operator or person attending to the singeing process of the stove.
In the accompanying sheet of drawings is represented one construction of this
improved stove; Fig. 1 being a longitudinal section Fig 2 a front view and Fig. 3
a ground plan in section. R is the singeing room containing the carcases suspended
by wheels to rail P passed through the upper part of the stove. This rail must be
cooled by water from a water-tank F which may cover the whole top of the
singeing room or only part of same as is shown in the drawings. A, B, and C
represent fire-places of any convenient number and construction arranged at
opposite sides of the stove and d are openings or grates through which the heating
gases are led into room R from whence the same pass into chimney i. One or
more openings a are formed in the wall of the stove for inspecting the process of
singeing, such openings being closed with glass or other suitable transparent
material. H and H¹ represent turning doors furnished in this case with four
wings r each but more or less wings may be used according to the number of com-
partments required; 8 s¹ represent the quadrants for closing one compartment
formed of two corresponding wings of each door. The carcases pass along the
rail P through the stove in direction of the arrows as shown in Fig 3 of the
drawings.
vare stop pins used for arresting at intervals the carriage wheels of the different
carcases, these pins are lifted and lowered by cam-wheels z fastened to shaft e
which latter is placed on top of the stove and which is moved by a chain pulley b.

page_text: At each pull of the chain the entrance-door H is turned by means of gearing m n
for a quarter of a circle and one carcase enters the stove whilst at same time all
stop pins are lifted and all carcases in room R roll forward to the next stop that
has dropped again during the time of motion of the carcases.
Door H opens by
the pressure of that carcase which has already been singed and this latter rolls out
of the stove and along rail P where it is received by the workmen.
.
The mechanical arrangement for moving and arresting the motion of the carcase
and of the inlet-door H' may be modified and any other convenient construction
may be applied also the number of carcases placed at one time in the singeing-
room may be varied according to the amount of work required to be done. In the
drawing is shown a stove intended for the reception of three carcases placed inside
the singeing room at one time but more or less may be so placed and the dimensions
of the stove and the number of fire places be regulated accordingly.
Having now described the nature and particulars of the said Invention I
claim: --
Firstly. The continual action of singeing stoves provided with the rail or bar P
on which the carcases are suspended by rollers which rail or bar is passed through
the stove and prolonged at the ends outside the stove to receive and deliver the
carcases substantially as herein described and as shown in reference to the
drawings.
Secondly. The application of different fire-places more or less in number arranged
at opposite sides of the stove and at different heights substantially as berein
described and as shown in reference to the accompanying drawings.
Thirdly. The application of water tank F for cooling the rail or bar P as herein
described in reference to the accompanying drawings.
Fourthly. The turnable wing-doors H, H' in combination with the moving
entrance door moving the suspended carcases at intervals according to the progress
of the work substantially as herein described and as represented in the accom-
panying sheet of drawings.
Fifthly. The combined construction of a stove for singeing hog's carcases in
continual action substantially as herein described and as specified in reference to
the accompanying drawings.
In witness whereof I the said Friedrich Hermann Felix Engel have here-
unto set my hand and seal this Seventeenth day of July in the year of
our Lord One thousand eight hundred and eighty two.