Year: 1886

page_text: I, CARL R. Voos of 38 and 40 Kochstrasse, Solingen in the Empire of Germany,
Manufacturer, do hereby declare the nature of this invention to be as follows:―
Previous to my invention the blades of scissors have generally been connected
together rigidly, by means of a screw which also served as a fulcrum. The blades
connected together in the manner mentioned, on cutting, move in close contact
with each other, and are subject to being pressed apart from each other by the stuff
under operation.
By such rigid connection the blades are made so as to contain a certain amount
of spring power which is obtained by giving the saine a bent form.
The spring power obtained in the said manner is not uniform along the whole of
the blade and is generally greater at the beginning of a cut than it is on the com-
pletion of a cut.
This invention has for its object to overcome these defects, by pressing the
cutting edges of the blades together selfactingly and uniformly, so as to ensure a
uniform and easy cutting with the scissors.
To attain the object mentioned I consider as novel and patentable in this inven-
tion, the employment of a removable blade mounted on a pin in combination with
a spring (buffer) pressing against such blade.
In my invention the two scissor blades are not connected together as usual by
means of rivet or screw, but by a prolonged pin or screw, in such a manner that
the upper blade may be lifted off the lower one, and the upper one pressed against
the lower one by means of a spring (spiral spring buffer).
The upper blade is furnished with a metal bush, in which I insert the spring.
The screw or pin which is fixed into the lower blade is formed with a head,
between which and the upper blade, the aforesaid spring is employed, which spring
presses the upper blade always against the lower one, and that in such a manner,
that the points of the blade, on account of being bent inwardly, on closing the
scissors will gradually get pressed more and more together, in order that in cases
where the blades are not bent equally, there will be always an elastic back bearing
of each respective blade which assures a uniform cut in all instances.

page_text: It will be understood that in place of a spiral spring an ordinary flat spring, etc,
or india rubber buffer, etc, may be employed without departing from the nature of
my invention which is applicable to all kinds of scissors.
To impart the necessary spring power to the scissor blades, in order to produce a
scissor which cuts easily and well without much exertion, it has heretofore been
necessary to have the thickness of the blade in a certain proportion to the bend of
the same, which difficulty by my invention is overcome.
In my invention I obtain the spring power by the action of the aforementioned
spring the action of which can be made to suit the purpose, as regards strength and
by means of which the scissors are caused to cut at any part of the blades.

page_text: I, CARL REINHARD Voos of Solingen in the German Empire, Manufacturer do
hereby declare the nature of my invention for IMPROVEMENTS IN SCISSORS and
in what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement :-
The object of this invention is to hold the two blades of the shears together by
a pivot pin which has a yielding spring interposed between its head and the
contiguous blade of the shears so as to permit the blades of the shears a motion to
or from each other for their more efficient operation.
In scissors heretofore used the two blades revolved on a rigid screw or rivet as
an axis, and by this means, they were secured together. The two blades of the
scissors connected in this manner pass each other very closely and snugly and it is
impossible to separate them by any body placed between them without straining
them. The parts must assume a more or less curvilinear form in order to produce
a true adjustment of the cutting edges. The deflection thus produced is a very
irregular one along the entire cutting edge and is generally greater at the beginning
of the cut than nearer its end.
The following construction obviates this objection, and tends to produce a
uniform and self regulating pressure by means of a spring, upon the cutting
edges T and T2 thus causing an absolutely uniform and smooth cut.
I consider the following new and patentable:
The removable cutting jaw, T2, revolving on the stud c, in combination with a
spiral compression spring s, which presses T² to T¹.
In the accompanying drawing, Figure 1, is a longitudinal elevation of my
improved scissors, and Figure 2 is a side elevation with a part thereof shown in
section. Figure 3 shows the section in a larger scale.
The two blades T¹ T² of the scissors are not connected as usual by means of a
rivet or screw, but by means of a stud or shouldered pin in such a manner, that
the blade T can be removed from contact with the blade T¹, but is constantly
pressed against T¹, by means of a spiral spring s, or elastic buffer of any suitable
material.
8
A metal bushing B is introduced into a hole countersunk in the upper or
exposed surface of T', as shown in the drawing, and the spiral spring s is seated in
it. The stud which is firmly secured to the lower part T', of the scissors, centers
and guides the spring 8, between the head R, and the shoulder on T. This
spring constantly presses the cutting edge T2, against the cutting edge T'. In
consequence of the curvilinear form of the two blades (concavity), the spring is
compressed more as the scissors are closed, so that even with an irregular curvature
of the cutting edges, the edges are constantly and gently pressed together and always
in close contact at the cutting point, thus insuring a uniform and smooth cut. This
is always true, whether the cutting is done near the point or whether it is done near
the shank or pivot.
The foregoing invention may be applied to all kinds of scissors and shears and it
is in no way restricted to this one case.

page_text: Heretofore, in easy working and good cutting scissora, the thickness of the
blades had to bear a distinct ratio to the amount of curvature in order to produce
the required elasticity with a minimuin expenditure of force. In this invention
this result is accomplished by the spring, 8, and the two cutting edges of the
blades are always kept in contact; its action may always be controlled and the
scissors will cut with any part of its edge smoothly, the edges being constantly
subjected to a uniform pressure towards each other.
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:
"A blade T2, of a pair of scissors or shears, revolving on a stud or shouldered
"pin, c, and capable of a longitudinal motion on this pin or stud, in combination
"with a spring or buffer acting on this blade, for the purpose of pressing together
the two blades uniformly during the operation of cutting, substantially as shown
"and described."
"