A New or Improved Machine or unmairing Dlaugur
Year: 1888

page_text: Date of Application, 3rd Feb., 1888
Specification Accepted, 16th Mar., 1888
A New or Improved Machine or unmairing Dlaugur
We, JOHANN HEINRICH KOOPMANN, and JOHANN DITTMER KOOPMANN, both of
Hamburg, in the Empire of Germany, Manufacturers, 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 the unhairing of slaughtered swine and consists in a
machine for this purpose.
The improved machine is represented in the accompanying drawings, in which
Fig. 1 is longitudinal section and Fig. 2 a plan thereof.
The machine comprises firstly a number of horizontal cylinders a preferably
hollowed towards the centre, which are provided with knives or scrapers band revolve
in the direction indicated by arrows; secondly, a shaft c carrying wings and arranged
sidewise of said cylinders; thirdly, the horizontal arms d which are so secured to two
parallel endless chains ee that when the latter are revolved by the chain wheels ff
in the direction indicated by arrows the arms move parallel to each other over the
cylinders and fourthly the inclined table or platfarm g.
The machine operates as follows: At the front side A of the machine is situated the
scalding pan, here the swine are hooked fast on the arms d by means of a device
allowing of the rolling or turning of the swine and are drawn by the same over the
knife-cylinders a onto the table y.
Owing to the inclined position of the cylinders a, and by the action of the wing
shaft c the swine turn or roll so that as they are drawn over the machine, their whole
surface comes in contact with the cylinders and the hairs are everywhere removed by
the knives b.
The machine is actuated by the pulley revolving the main shaft i and by aid of
mitre wheels the axle and the latter by bevelled wheels the cylinders a.
The wing
The chains e e
shaft c is revolved from the shaft by chain l, axles mn and chain o.
are actuated by the wheels from the main axle i or by hand crank.
The chains e e and the arms d can be stopped during work to fasten the swine to
the same. For this purpose the gearing is not rigidly connected with the main shaft i,

page_text: but may be engaged by means of a clutch which can be inserted at pleasure by
means of the lever s, screw spindlet and the cord running over pulley u turning
said screw spindle and thus moving the lever s.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that what we
claim is
1. A machine for unhairing slaughtered swine comprising rotary cylinders or
paraboloids a furnished with knives or scrapers in combination with means for
drawing the swine over the same.
2. The combination with means for drawing the swine of rotary cylinders or
paraboloids a arranged in inclined position to the direction of draught, substantially
as illustrated and described.
with the cylinders or paraboloids a
3. The combination of the wing shaft
substantially as and for the purpose set forth.
Dated this 3rd day of February 1888