Improvements relating to Soissors, Pincers, and the like.
Year: 1893

page_text: Date of Application, 31st Jan., 1893-Accepted, 4th Mar., 1893-
COMPLETE SPECIFICATION.
Improvements relating to Soissors, Pincers, and the like.
1, CARL HAMANN of Reinbeck in the Empire of Germany, of no occupation, 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 scissors and pincers and to similar instruments having
two blades, jaws or cheeks which are intended to be moved to or from each other
by hand to produce a cutting, holding or other effect of pressure on an object
placed between them.
In ordinary scissors it will be noticed that the length of the cut bears a gradually
increasing proportion to the amount of relative movement of the handles as the
scissors approach a completely closed position, so much so that the first half of the
length of the cut requires from ths to ths of the whole movement of the handles
while the last half of the out is given by only th to ths of the movement of the
haudles.
The object of the present invention is to do away with this inequality of force in
the cut and either to render the cut equally powerful throughout or if desired more
powerful towards the end of the cut than at the beginning. A similar object is
intended for pincers nippers and the like, namely that the power shall be equal
throughout or shall inorcase as the jaws or cheeks approach their closest position.
An incidental advantage of the improved construction hereinafter described is
that the blades, jaws or cheeks having their common pivotal point further removed
from their operating edges or faces, will, for the same opening width present a
more acute angle to one another than with ordinary scissors pincers or the like.
This invention consists in making the blades (which term is intended to include
any form of cutting or other blade jaw or cheek) separate from the handles and
pivoting the two blades together on a pivot common to both and the two handles
together also on a pivot common to both, each handle being also pivoted to onoh
blade at a point intermediate of the common handle pivot which lies then uearor
the outer ends of the blades, and of the common blade pivot which lies then
nearer to the outer ends of the handles.
Such construction is illustrated in the annexed drawing in which
Fig. 1 shows scissors made according to this invention as they appear when
opened and Fig. 2 the same when closed.
Fig. 3 illustrates pincers so made as they appear when opened and Fig. 4 the
same when closed.
The blades A. B are pivoted together at a, the handles A' B' are pivoted
together at b, while the handle A' is pivoted to the blade A at e and the handle B'
to the blade B at d.
The blades and the handles must be cut away slightly as shown to afford space
for the pivots a and b when the scissors are closed. The construction of the
pincers or other tools is exactly the same as that above stated the same reference
letters being used to indicate the same or equivalent parts throughout the drawing.
Having now particularly described and ascertained the nature of this said inven-
tion and in what manner the same is to be performed I declare that what I
claim is ;-
In scissors, pincers and the like the combination of two blades pivoted on a pivot
common to both and two handles also pivoted on a pivot common to both the said
blades and handles boing respectively pivoted one blade to one handlo, the other

page_text: blade to the other handle at points intermediate of the two common pivots
aforesaid, substantially as described.
Dated this 31st day of Januar❤ 1002
R. HADDAN,
Herbert Haddan & Co.,
18, Buokingham Street, Strand, London, Agent for Applicant.