Year: 1887

page_text: Date of Application, 4th Apr., 1857
Complete Left, 4th Jan., 1888
Complete Accepted, 29th Mar., 1888
Implements.
We, BERNHARD NEUMANN, and ERNST KÜHNE, Manufacturers, trading under the
firm of Kühne, Sievers, and Neumann, both of Köln on the Rhine, in the Kingdom
of Prussia, German Empire, do hereby declare the nature of this Invention to be as
follows:-
Our invention relates to improvements in scissors, shears, tongs, nippers, and
similar implements, particularly those used for surgical use; and the object of our
invention is to provide an easy and convenient means of uniting the two blades or
sides of a pair of scissors, shears, tongs or nippers and other implements of the kind
in a manner, that they may at any time be casily and readily separated and securely
reunited, for the purpose of cleaning or grinding the same; the improvements also
serve to lessen the friction between the two blades or halves, and a uniform pressure
in cutting is thereby obtained, without the use of rivets or screws.
The scissors and shears provided with the improvements of our invention are
particularly intended for application' in surgical use, which requires a smooth,
perfectly regular and reliable action of the implement, as also its absolute cleanness,
to avoid even the slightest portions of septic impurities being introduced into the
wounded parts.
We, therefore, will describe our invention with reference to a pair of surgical
scissors the application to any other scissors, shears, tongs, nippers and similar
implements consisting of two blades, or halves, will be easily understood, being
essentially and materially the same.
Instead of the rivet or screw usually employed in uniting the two blades, we use,
according to our invention, a loose stud or pivot with a crosshead or cain at the
outer end, and formed on or secured to a slightly curved plate or securing spring
blade of elastic metal, such as steel or brass, by a round bearing collar at the other
end. One of the blades of the scissors has, at the centre of motion, a cylindrical
hole extending through the blade, and into which fits the collar of the stud or pivot.
The other blade of the scissors has a similar cylindrical hole outside, which however,

page_text: does not extend through the blade, but only about half way into the metal. The
remaining partition is equally pierced, but not cylindrically; but has a slot extending
through this partition oblong or oval in shape and congruent with the shape of the
cam of the pivot.
In uniting the two blades, or halves, of the pair of scissors, the pivot is passed
with its cam through the cylindrical hole of the one blade from the outside, and
projects from its inside; then it is passed through the oblong or oval slot in the other
blade, from the inside, and by a slight turn of either of the blades, the cam of the
pivot will take a position across the corresponding slot and thereby will be prevented
from sliding out of the said slot.
In order to prevent the said cam from coming again into a position parallel to the
slot, while the blades are being opened or working against each other, the clastic
blade secured to the pivot, is of sufficient length to extend down upon the shank of
one limb of the scissors, and is secured upon said shank by a clamp formed at the
end of said plate. The middle part of the pivot and collar being cylindrical allows
of the two blades turning freely and concentrically around it, while the cam and
spring blade firmly hold the two blades together. When the two blades are to be
separated for the purpose of thoroughly cleaning the same, the elastic or spring plate
secured to the pivot needs only to be lifted from the catch on the shank of the
scissors to which it is clamped; and then turned into the position to bring the cam
of the pivot parallel to the slot into which it fits, so as to allow the one blade to he
taken off the pivot. The other blade with the cylindrical slot may be readily taken
off the pivot. No projecting parts on the blades offer any obstacle in cleaning or in
grinding the same and this mode of uniting the two blades offers the greatest facility
for an immediate connection and disconnection of the blades, as also for thoroughly
cleaning and carefully grinding the same.

page_text: COMPLETE SPECIFICATION.
Improvements in Scissors, Shears, Tongs, Nippers, and similar
Implements.
We, BERNHARD NEUMANN and ERNST KÜHNE, trading as Kühne, Sievers, and
Neumann, both of Cöln on the Rhine, in the Kingdom of Prussia, German Empire,
Manufacturers, do hereby declare the nature of this invention and in what manner
the same is to bo performed, to be particularly described and ascertained in and by
the following statement:-
Our invention relates to improvements in scissors, shears, tongs, nippers, and
similar implements, particularly such for surgical use, and the object of our invention
is to provide an easy and convenient means of uniting the two blades or sides of a
pair of scissors, shears, tongs, or nippers, and other implements of the kind, in a
manner that they may at any time be easily and readily separated and re-united for
the purpose of cleaning or grinding the same; the improvement also serves to lossen
the friction between the two blades or halves, and a uniform clastic pressure in
cutting is thereby obtained.
The scissors and shears provided with our invention are particularly intended for
application in surgical use, which requires a smooth, perfectly regular, certain and
reliable action of the implement, as also its absolute cleanness to avoid even the
slightest portions of septic impurities to be introduced into the wounded parts. We,
therefore, will describe our invention with reference to a pair of surgical scissors;
the application with any other scissors, shears, tongs, nippers, and similar implements
consisting of two blades, or halves, will be easily understood, being materially
the same.
With reference to the annexed drawings,
Figure 1 represents a pair of surgical scissors consisting of the two halves A and B,
united by means of the new device of our invention; Figure 2 is an upper view of
one of the blades A; Figure 3 a view of the same blade A from below; Figure an
upper view of the other blade B; Figure 5 a transverse section of the blade A along
the line m-n of Figure 2; Figure 6 a transverse section of the blade B along the
lines of Figure 4; Figure 7 is a view from below of the elastic blade and
pivot serving to unite the two halves A and B; Figure 8 is a side elevation of said
blade C; Figure 9 a transverse section in the plane of the paper of the pivot shown
in Figure 8, and Figure 10 a transverse section along the line -y of Figure 8.
Instead of the rivet usually employed in uniting the two halves A and B of a pair
of scissors, shears or other implements of the kind, we use, according to our
invention, a loose pivot e with a cam or crosspiece e¹ at one end and a slightly curved
plate C of steel or other elastic metal secured at the other end. One of the blades,
in the drawings the blade B, has at the centre of motion a cylindrical hole extending
through the blade and into which fits the crosspiece c¹ of the pivot c. The other
blade A has a similar cylindrical hole a outside, which, however, does not extend

page_text: through the blade, but only about half way into the metal. The remaining partition
is equally pierced, but not cylindrically; the slot a extending through this partition
is oblong or oval and congruent with the shape of the crosspiece c¹ of the pivot c;
this slot a' crosses the longitudinal centre-line of the blade at an acute angle.
In uniting the two blades or halves A and B of the pair of scissors, the pivot c is
passed with its crosspiece c¹ through the cylindrical hole b of the blade B from outside,
and project from it inside; then it is passed through the oblong or oval slot a¹ in the
other blade A from inside, and by a slight turn of either of the blades, the crosspiece c¹
of the pivot c will take a position across the slot a' and, thereby, will be prevented
from sliding out of the said slot. In order to prevent the crosspiece c¹ from coming
again into a position parallel to the slot a while the blades are being opened or
working against each other, the elastic blade C secured to the pivot c, of sufficient
length to extend down upon the shank of the scissors, is secured upon the shank of
blade B by a clamp d, formed at the lower end of said blade C and clasping elastically
on an edge of the shank, as shown in Figure 1.
The middle part of the pivot c is cylindrical, and allows the two blades A and B to
turn freely around it, while the crosspiece c¹ firmly holds the two blades together.
When the two halves A and B are to be separated for the purpose of thoroughly
cleaning the same, the elastic plate secured to the pivot c needs only to be lifted
from the shank to which it is clamped, and then turned into the position to bring
the crosspiece c¹ of the pivot c parallel to the slot a' into which it fits, so as to allow
the blade A to be taken off the pivot.. No projecting parts on the blades offer any
obstacle in cleaning or in grinding the same, and this mode of uniting the two blades
offers the greatest facility for an immediate connection and disconnection of the
blades, as also for thoroughly cleaning and carefully grinding the same.
An elastic pressure is exercised by the plate in holding the two blades together ;
this soft and equal pressure secures a certain and uniform action of the implement in
cutting.
Having now particularly 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 :-
The combination with two blades or halves of a pair of scissors, shears, tongs,
nippers or other implements of the kind, of a pivot fitting loosely into a hole of the
one blade and entering with a cam or crosspiece into a corresponding slot of the
other blade, an elastic plate secured to said pivot serving to adjust the crosspiece with
reference to the said slot by clamping said plate upon the shank of the implement.
January
Water RT of January 1929
WM. P. THOMPSON & Co.,
Of 6, Lord Street, Liverpool,
Filing Agents for the Applicants.