Improvements in Machinery for Cutting in Pieces Tin Plate, Waste Scraps, and other Thin Metallic Sheet Scrap.
Year: 1884

page_text: Improvements in Machinery for Cutting in Pieces Tin Plate,
Waste Scraps, and other Thin Metallic Sheet Scrap.
[Communicated from abroad by Monsieur Ludolph Poensgen, of Düsseldorff, in
the Empire of Germany.]
I, WILLIAM PHILLIPS THOMPSON Fel. Inst. P.A. of the Liverpool and London
Agency for Foreign Patent Solicitors, 6 Lord Street Liverpool, in the County of
Lancaster, Civil Engineer do hereby declare the nature of the said Invention for
IMPROVEMENTS IN MACHINERY FOR CUTTING IN PIECES TIN PLATE WASTE SCRAPS,
AND OTHER THIN METALLIC SHEET SCRAP and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement:
The Invention is best described by aid of the accompanying Drawings of a
machine designed for cutting up tin plate waste scraps of every description and
reducing them to small pieces. It is also applicable for cutting up thin untinned
iron plates and thin sheet brass or copper scrap.
This machine works as follows: The waste scraps to be cut up having been
placed on the feeding table A, are levelled as uniformly as possible by hand or by
means of a rake, and pushed towards the first pair of cylinders B, B. The scraps
pass between these, and are equalized, that is to say, pressed into the form of a
cake which slides down an inclined plane C to guiding rolls C, C. These deliver
the cake over the fixed knife D, the edge of which is notched. A series of
cutters F F are arranged upon a cutting cylinder E, which revolves at great speed,
and these cutters are so fixed that the larger ones exactly fill the spaces left by the
notches in the fixed knife, but without touching the edges of the notches, whilst
the smaller ones pass close by the cutting edges of the teeth of the fixed knife D.
The scraps are sheared between the fixed knife and the revolving cutters. The
long and short cutters of the cylinder are arranged as uniformly as possible upon
its surface, and in such a manner that for every notch in the fixed knife there
exists a long cutter, and that for every cutting tooth of the fixed knife there is a
corresponding short cutter.
The quicker the cylinder revolves, and the nearer the cutting edges of the cutters
upon it are adjusted to the cutting edges of the fixed knife, the better the apparatus
will work. The driving of the machine is best managed by means of a belt pulley
fixed directly on the axle of the cutting cylinder.

page_text: The guiding cylinders, as well as the compressing cylinders are driven from the
axle of the cutting cylinder by means of suitably adjusted toothed wheels, so
arranged that the guiding cylinders rotate rather more quickly than the com-
pressing cylinders, and that the distance travelled by the compressed materials,
effected by the rotation of the guiding cylinders at each revolution of the cutting
cylinder should be somewhat shorter than the depth of the notches in the fixed
knife.
Having now particularly described and ascertained the nature of the said
Invention, as communicated to me, and in what manner the same is to be
performed, I declare that what I claim is :-
The manufacture and use of a machine consisting principally of a-fixed and
notched knife, combined with a cutting cylinder revolving alongside the fixed
knife, and provided with cutters alternately long and short arranged so as to
correspond with the teeth and notches of the fixed knife, to effect the cutting into
small pieces of scraps of tinned iron plate, or other thin tough metal plate.
It is, of course immaterial whether the teeth be placed on the cutting cylinder,
or whether this cylinder be constructed of saw blades having each one or more
teeth, and whether the delivery of the tin plate scraps to the knives be made by
hand or automatically by the cylinders.