Improvements in Fish Scaling Knives.
Year: 1892

page_text: Date of Application, 1st Nov., 1892-Accepted, 31st Dec.. 1892
COMPLETE SPECIFICATION.
Improvements in Fish Scaling Knives.
A communication from ADOLPH GUTTZEIT and JOHANN BECK, both of
Graudenz, West Prussia, in the Empire of Germany, Manufacturers.
I WILLIAM PHILLIPS THOMPSON, F.C.S., M.I.M.E., of the Agency for
Foreign Patent Solicitors, 6 Lord Street Liverpool and 6 Bank Street Manchester,
both in the County of Lancaster, and 323 High Holborn in the County of
Middlesex, Civil Engineer, 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 :-
The scaling of fish with ordinary knives is a dirty, slow, and on account of the
poison in fish, dangerous business. Further when using an ordinary knife the flesh
of the fish is often injured in rapid scaling.
This drawback is fully removed in the knife forming the object of this invention,
the main principle of which consists in providing a blade with W shaped teeth.
On the accompanying drawing this knife is shown in two modifications.
Figs. 1-3 show a knife with two blades A, & B, one of which A serves as
scaling knife, and Fig. 4 shows a single bladed knife.
The knife, Figs. 1 & 2, consists of the scaling blade A and the knife blade B.
The scaling blade A is provided with W shaped teeth, by means of which the
firmly attached scales may be very easily removed. By this peculiar arrangement
of teeth the knife works extremely easily and surely, as the lower cutting edges
of the teeth grip the scales at their roots, whilst the side edges of the teeth assist
in removing the scales.
To prevent the scales flying all about, a removable scale catcher E is attached,
which has studs F which studs engage in slots G G' of the scaling knife. This
scale catcher may however be connected with the knife in any other suitable
detachable manner.
The blade B is inserted in the handle H. If it be desired to use this blade, the
handle H is turned on the hinge I so that the scaling blade A, after the removal
of the scale catcher E may be inserted in the handle H, and the blade B is
uncovered.
The catch K, which is let into the handle H, serves for fastening both the knife
blade and the scaling blade. This catch has a pin L Fig. 3 and at its lower end a
spring M.
When this catch K is pressed down its pin L engages respectively
either in the slot G of the scaling blade A or in the slot N of the knife blade B.
Instead of the hinged movable handle H, a sliding off handle might be employed
which according to the purpose for which it is required might be pushed over one
or the other of the blades.
Fig. 4 shows an essentially similar fish scaling knife to that shown in Figs. 1 & 2.
In this case however only a single blade is employed which is provided with a
scaling as well as a cutting edge. Consequently the handle H of this knife is a
permanently fixed one. It is only necessary when the scales have been removed
with the scaling edge D, and the scale catcher E taken off, to turn this knife
upside down so that the teeth side is uppermost, and the cutting edge faces
downwards. The fish can be then cleaned out and divided with the cutting edge.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, as communicated to me by
my foreign correspondents, I declare that what I claim is
1. A fish scaling knife consisting of two blades (A & B) one of which has

page_text: 2. In the herein before described kind of fish scaling knife the arrangement of
the scaling and cutting edge in different blades revoluble on the handle hinge (I)
and according to which is used may be inserted in the handle H, and may be fixed
by means of a catch (K) having a pin (L) and spring (M) the pin being capable
of engaging in the slots G¹ N of the scaling or cutting blades respectively.
3. In the hereinbefore described kind of fish scaling knife, providing a handle
which may be released & drawn off, and according to which blade is in use may be
placed over one or the other.
4. In the hereinbefore described kind of fish scaling knife, a single blade with
fixed handle which has at one side a W shaped toothed edge, and on the other side
a cutting edge, Fig. 4.
5. In the hereinbefore described kind of fish scaling knife, providing a removable
scale catcher E.
Dated this 31st day of October 1892
WM. P. THOMPSON & Co.,
Agents for the Applicant.