Improvements in Scissors and smears.
Year: 1886

page_text: Improvements in Scissors and smears.
I MARTIN PULVERMANN, of No 12, Cooper's Row, Crutched Friars, in the city
of London, Merchant do hereby declare the nature of this invention (a communi-
cation from abroad by Messieurs Gerresheim and Son, of Solingen, in the Empire
of Germany, Manufacturers) to be as follows:-
This invention relates to improvements in scissors and shears.
In scissors and shears as hitherto manufactured the angle of the cutting edges'
varied from about forty five degrees to five degrees and the scissors or shears would
not therefore cut properly or efficiently at or towards the base of the cutting edges
but only towards the middle, and when the scissors or shears were used with the
blades nearly closed they would not as is well known cut near the points.
This invention consists in so arranging the cutting edges of scissors and shears
that they shall incline outwardly from the base when the blades are in a closed
position whereby a nearly constant cutting angle is obtained throughout the whole
length of the cutting edges.
In the accompanying drawing which illustrates these improvements figures 1
and 2. are diagrams shewing respectively the angle of the cutting edge of the blades
of the improved scissors or shears and that of scissors and shears as hitherto
constructed. Figure 3 is an elevation of the improved scissors or shears in their
closed position; figure 4 shews the same partially opened and in figure 5 they are
shewn opened to their full extent.
°
In carrying out the invention the cutting edges of the blades are arranged so
that they shall incline outwardly from the base for a certain distance as shewn in
figure 1 instead of inwardly (as has hitherto been the case) as shewn in figure 2.
This arrangement of the cutting edges of a pair of scissors or shears allows of a
constant or nearly constant angle of the cutting edges being obtained so that the
said scissors or shears can cut equally well whether they are fully opened as shown.
in figure 5 or only partially opened as shown in figure 4.

page_text: The advantage of a nearly constant angle of the cutting edges obtained by this
invention over the constantly varying angle of the cutting edges of scissors and
shears as hitherto manufactured is greatest when the said angle measures twenty
five degrees in which case it has been found that scissors and shears will cut at
any point or points of their length in a regular and efficient manner.
I MARTIN PULVERMANN, of N° 12, Cooper's Row, Crutched Friars, in the city
of London, Merchant, do hereby declare the nature of this invention (a communi-
cation from abroad by Messieurs Gerresheim and Son, of Solingen, in the empire
of Germany, Manufacturers) 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 improvements in scissors and shears.
In scissors and shears as hitherto manufactured the angle of the cutting edges
varied from about forty five degrees to five degrees and the scissors or shears would
not therefore cut properly or efficiently at or towards the base of the cutting edges
but only towards the middle and when the scissors or shears were used with the
blades nearly closed they would not, as is well known, cut near the points.
C
This invention consists in so arranging the cutting edges of scissors and shears
that they shall incline outwardly from the base when the blades are in a closed
position whereby a nearly constant cutting angle is obtained throughout the whole
length of the cutting edges.
In the accompanying drawing which illustrates these improvements figures 1
and 2 are diagrams shewing respectively the angle of the cutting edges of the
blades of the improved scissors or shears and that of scissors and shears as hitherto
constructed. Figure 3 is an elevation of the improved scissors or shears in their
closed position; figure 4 shews the same partially opened and in figure 5 they are
shewn opened to nearly their full extent.
In carrying out the invention the cutting edges of the blades are arranged so
that they shall incline outwardly from the base for a certain distance as shown
at a, a, to b, 61, in figure 1 (instead of inwardly from the base to the point as has
hitherto been the case and as shown at A, A³, to B, B¹, in figure 2) the cutting

page_text: edges of my improved scissors then converging towards each other as shown at 6, b¹,
to c, c¹, figure 1.
This arrangement of the cutting edges of a pair of scissors or shears allows of a
constant or nearly constant angle of the cutting edges being obtained (as is clearly
illustrated in figures 4 and 5 of the drawing) so that the said scissors or shears
can cut equally well whether they are fully opened or nearly fully opened, as shewn
in figure 5, or only partially opened as shewn in figure 4.
The advantage of a nearly constant angle of the cutting edges obtained by this
invention over the constantly varying angle of the cutting edges of scissors and
shears as hitherto manufactured is greatest when the said angle measures twenty
five degrees in which case it has been found that scissors and shears will cut at
any point or points of their length in a regular and efficient manner.
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
1. Forming the cutting edges of scissors and shears in such a manner that they
incline outwardly from the base for a certain distance when the blades are in a
closed position as and for the purpose hereinbefore described.
2. The improved scissors or shears substantially as hereinbefore described and
illustrated in the accompanying drawing.
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