Improvements in Shears and Scissors.
Year: 1892

page_text: Date of Application, 5th Aug., 1892-Accepted, 17th Sept., 1892
COMPLETE SPECIFICATION.
Improvements in Shears and Scissors.
We, HEINRICH HAHN and LUDWIG LÖCHEL, both of '18, Grosse Wollweber-
gasse, Danzig, in the Kingdom of Prussia, German Empire, Surgeons, 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:-
Our invention relates to shears or scissors constructed in such manner that one
blade is somewhat retracted in relation to the other during the closing movement
of the shears or scissors, and consists in providing one of the blades with two slots,
and the other with two pins sliding in said slots, as will be described more fully
hereinafter.
Our invention will be more readily understood by the aid of the accompanying
drawings, in which :
3
Fig. 1 shows our improved scissors in their closed position, and
Fig. 2 shows them fully opened.
Similar letters refer to similar parts in both views.
In carrying our invention into effect, we make the blades A A¹ of the usual
shape, and cut two slots B and D into one of the same, for instance the upper
blade A, as shown. One of these slots D, extends parallel to the length of the
blade, the other B is made oblique thereto. The other blade-the lower blade A',
as shown is provided with two pins C and E, fitting into the slots B and D
respectively. The pin E is identical with the common central pin forming the
pivot for the blades of ordinary shears or scissors.
We wish it to be understood that shears and scissors of usual construction may
be very easily altered according to our invention, as the only thing necessary in
this case is to cut the slots B and D into one of the blades, and to provide the other
with an additional pin C.
The operation of our improved shears is as follows: In the open position of the
blades (Fig. 2) the pins C and E are both at the rear ends of the slots B and D
respectively. Now, when shutting the shears, the blades A and A¹ will turn
around the pin E, which serves as a pivot. At the same time the pin C, by gliding
in the oblique slot B, will cause the upper blade A to recede in relation to the
lower blade A'. The longitudinal slot D allows such a receding movement. When
the shears are fully closed (Fig. 1) the pins C and E are at the front ends of the
slots B and D respectively.
The above described construction of shears and scissors is very advantageous,
first on account of the considerably increased facility with which resistant
substances, such as thick fabrics, are cut, this being due to the described receding
movement of one of the blades during the cutting period; secondly, all parts may
be cleaned easily, none of them being covered constantly by some other part,
whereas in shears and scissors of usual construction it is hardly possible to clean
thoroughly the parts next to the pivot; thirdly, any shears or scissors may be
readily altered so as to conform with our invention, as already mentioned.
Having now fully described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
Shears and scissors having one blade provided with two pins, and the other blade
with a longitudinal and an oblique slot for the reception of the said pins, so that a

page_text: receding movement of one blade in relation to the other is obtained when shutting
the shears or scissors, substantially as and for the purpose described.
Dated this 5th day of August 1892.
HEINRICH HAHN,
LUDWIG LÖCHEL,
By Geo. H. Rayner,
37, Chancery Lane, London, W.C., Agent for the Applicants.