Improvements in or relating to Scissors, Shears, or the like.
Year: 1891

page_text: COMPLETE SPECIFICATION.
Improvements in or relating to Scissors, Shears, or the like.
I, CARL HAMANN, of Hamburg, in the Empire of Germany, Scissor Manufacturer,
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 or shears of any kind in which the one blade is
in one part with or fixed immovably to the one handle and the other blade is
pivoted thereto and is moved by the other handle also pivoted to the first but not
connected to the second blade in one immovable whole.
The improvement relates principally to the relative positions given to the
respective pins or the like by which the second handle and the second blade are
severally pivoted to the first handle with blade thereon. Formerly these two pins
were arranged one above the other that is to say nearer to the point of the fixed
blade, the pin carrying the second handle being usually the lower or further from
the point. According to the present invention these two pins are arranged on the
same level or substantially so, the result of which is that during the closing of the
scissors, the amount of the shifting of the blades one over the other is less in
proportion to the closing of the handles during the commencement of the cutting
stroke than it is at the finishing of the stroke. By this construction therefore, less
strength is required when the cut is commenced, the strength required or work
necessary increasing as the cut progresses, which arrangement, especially with the
cutting of thick or tough materials, ensures considerably greater comfort in the
use of the scissors or shears.
The accompanying drawings illustrate the manner in which the invention is
performed,
Fig. 1 being a view of an improved pair of tailors' shears open,
Fig. 2 part of the same closed,
Fig. 3 a side view thereof,
Figs. 4 and 5 sections respectively on lines and ec of Fig. 2.
Fig. 6 illustrates the invention as applied to garden shears.
The same letters of reference indicate the same or corresponding parts throughout
the figures.
G and Gindicate respectively the two shanks or handles of the shears, the
handle G being prolonged to form the blade, while the other blade s pivoted
to the blade s at is connected to a prolongation of the handle G by means of a
pinthereon engaging in a slot m in the said prolongation of the handle G. The
handle G is pivoted to the blade sat a. The improved shears are distinguished
from others by the relative positions of the pins a and b with regard to the general
line of length of the shears these pins being on the same level or substantially so,
as described, so that when the shears are closed, the angle at formed by the
pins a, b, r in this position is a right angle or nearly so and this angle becomes more
and more obtuse as the shears are opened to a greater and greater extent.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed, I declare that what I
claim is :-
Shears, scissors or the like in which one of the handles or shanks carries a fixed
blade and the other handle or shank is pivoted thereto and connected by a

page_text: prolongation beyond its pivotal point with the second blade pivoted to the first, the
pivots of the blade and of the handle being on the same level or substantially
so as herein-described.
Dated this 5th day of ML 1901
HERBERT & Co.,
18, Buckingham Street, Strand, Loudon, W.C., Agents for the Applicant.