Improvements in Shearing Machines.
Year: 1898

page_text: Complete Specification Left, 14th Apr., 1898-Accepted, 4th June, 1898
Improvements in Shearing Machines.
I, MATTS WIKSTRÖM, of Kramfors, in the Kingdom of Sweden, Inspector, 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 a device for common shearing machines provided with
two toothed plates placed one above the other and permitting of movement being
transmitted from a shaft, so that the shearing device can be used for shearing
sheep and other animals.
In the accompanying drawings,
Figure 1 is a vertical longitudinal section,
Figure 2 a partial horizontal section, and
Figure 3 a cross section of the shearing device.
The shearing machine consists of a handle, through which is introduced a shaft 3
connected with a flexible shaft 2. On the inner end of the shaft 3 there is mounted
a wheel or disc 4, the outer border or periphery of which is bevelled or formed as
a cone and undulated in such a way that each outward undulation is diametrically
opposite an inward undulation. This disc might also be replaced by a truncated
and undulated cone, secured to the shaft 3. The disc or cone 4 is situated in a
casing consisting of two parts screwed together. The one part is formed by the
outer end of the handle 1 and the other part of two pieces 6 and 7, on which the
shear blades 8 and are mounted. In the space between the parts 6 and 7 a
lever 10 formed as a fork is located to turn on a pivot 11 passing through the
parts 6 and 7. The rear arms of the lever 10 embrace the undulated disc 4, and
the forked end of the said lever is introduced between two shoulders 12 on the
upper shear blade. When the shafts together with the disc 4 are rotated, the
periphery of the disc whose surface is conical (for facilitating the adjustment of
its engaging surface relative to the forked lever) actuates the forked lever 10 and
gives it an oscillating movement, whereby the upper cutter is moved on the lower.
The handle permits the shearing device to be moved on the surface to be sheared.
The moveable parts of the machine may be lubricated in any suitable way.
It is evident that the undulated border or periphery of the disc acts in such a
manner, that only the outward undulations or crests displace the lever 10 and move
the cutter. Consequently it is not necessary that these crests be joined to each
other as they may be separated by apertures or replaced by projections. By the
present invention the number of cuts of each revolution of the disc is increased.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what I
claim is:
-
1. In shearing devices; a revoluble disc (4), the edge of which is undulated or
provided with a number of projections, said disc being arranged to actuate a forked
lever, which is connected to the upper cutter, in order to increase the number of

page_text: cuts for each revolution of the revoluble disc, substantially as herein before
described.
2. In a shearing device such as described, forming a bevelled or conical face
on the undulated border or periphery of the revoluble disc on which bears the
rear arms of the cutter-actuating lever, in order to enable the engaging surface of
the disc to be regulated relative to the said arms of the lever, substantially as
hereinbefore described.
3. The general construction and combination of parts taken as a whole, forming
the improved shearing machine, substantially as hereinbefore described and
illustrated.
Dated this 10th day or Apгu 1038.
WM. P. THOMPSON & Co.,
Of 6, Lord Street, Liverpool, Agents for the Applicant.