Improvements in or applicable to Scissors, Pincers, and other like Tools.
Year: 1890

page_text: Date of Application, 14th June, 1890
Complete Specification Left, 13th Mar., 1891-Accepted, 25th Apr., 1891
PROVISIONAL SPECIFICATION.
Improvements in or applicable to Scissors, Pincers, and other
like Tools.
A communication from abroad by MARIE WEBER, of Zürich, in the Republic of
Switzerland.
I, WILLIAM PHILLIPS THOMPSON, F.C.S., M.I.M.E., of the Agency for
Foreign Patent Solicitors, 6, Lord Street, Liverpool, and 6, Bank Street,
Manchester, both in the County of Lancaster, and 323, High Holborn, in the
County of Middlesex, Civil Engineer, do hereby declare the nature of this
invention to be as follows:-
This invention relates to pincers, scissors and similar tools, and has mainly for
its object a device which enables the parts of the said tools, pivoted on a common
centre, to be separated from each other quickly and without the assistance of any
tool whatever.
This is a very great advantage, especially for surgical instruments, as, after each
time of using, a thorough and speedy disinfection of the various parts can be
performed, and in the case of other tools the pivot and friction surfaces can be well
oiled and cleaned. This fastener is also distinguished from any other existing at
present by great solidity and simplicity.
On the annexed drawing, the fastening device is shown in Figures 1 to 4 on a
pair of scissors, and in Figures 5 and 6 on ligature nippers: in these,
Figure 1 is a front view of the scissors closed.
Figure 1 a part of a pair of scissors opened.
Figure 2 a side view of Figure 1.
Figures 3 and 4 the two parts of a pair of scissors separated.
Figure 5 a front view of binding nippers.
Figure 6 a plan of one blade of the nippers shown in Figure 5.
The part a is provided with a slot a', which widens out below into an opening a¹*,
so that the head of the pin b', fixed on the blade b, can pass through the same.
Above the slot a' there is a projection a² which corresponds with a groove b³,
situated round the pin &, and into which the projection fits so exactly that its height
is equal to the difference between the groove and the diameter of the pin. The
part 6 is further provided with a slot 62 of the same depth as the groove b² and of
the same breadth as the projection a².
The connection of the two parts a and b is brought about by placing one on the
other in such a way that the extension a' of the slots stands above the head of the
pin ', and at the commencement of the notch &². The parts a and b are then drawn
against each other, in such a way, that the projection a², sliding through the slot 62,
is received by the groove ². The pin is in this position held by the slot a' and
the latter is covered by the head of the pin . By a movement of the parts a and b
against one another, and separating them, the projection a² is moved round the pin
into the groove b². An automatic disengaging of the parts cannot take place, as
the scissors or other instrument cannot open far enough, when cutting, to enable this
to take place.
In the nippers shown in Figures 5 and 6, the fastening arrangement, as may be
easily seen from the drawing, is similar to that described above.
Instead of making the groove b³, as shown in Figures 1 and 3, it can be arranged
as in Figure 1ª. In this case the slot is so placed that the enlargement a¹* is at
the top, and correspondingly the projection as at the bottom of the slot a'. The
''
ነገ

page_text: groove could be hollowed out on its outer circumference so as to replace the
covering head of the pin b'.
Dated this 12th dox of Tune 1890
WM. P. THOMPSON & Co.,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in or applicable to Scissors, Pincers, and other
like Tools.
A communication from abroad by MARIE WEBER, of Zürich, in the Republic of
Switzerland.
I, WILLIAM PHILLIPS THOMPSON, F.C.S., M.I.M.E., of the Agency for
Foreign Patent Solicitors, 6, Lord Street, Liverpool, and 6, Bank Street,
Manchester, both in the County of Lancaster, and 323, High Holborn, in the
County of Middlesex, Civil Engineer, 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 pincers, scissors and similar tools, and has mainly for its
object a device which enables the parts of the said tools, pivoted on a common
centre, to be separated from each other quickly and without the assistance of
any tool whatever.
This is a very great advantage, especially for surgical instruments, as, after
each time of using, a thorough and speedy disinfection of the various parts can
be performed, and in the case of other tools the pivot and friction surfaces can
be well oiled and cleaned. This fastener is also distinguished from any other
existing at present by great solidity and simplicity.
On the annexed drawing, the fastening device is shown in Figures 1 to 4 on
a pair of scissors, and in Figures 5 and 6 on ligature nippers; in these,
Figure 1 is a front view of the scissors closed;
Figure 1 a part of the same open;
Figure 1 shows a modification;
Figure 2 a side view of Figure 1, partly in section ;
Figures 3 and 4 the two parts of a pair of scissors separated;
Figure 5 a side view of one blade of the nippers shown in Figure 6;
Figure 6 a front view of binding nippers.
The part a is provided with a slot a', which widens out below into an
opening a³, so that the head of the pin ', fixed on the blade b, can pass through
said opening. Above the slot a¹ there is a projection a² which corresponds with
a groove, situated round the pin 6, and into which the projection fits so that
its height is equal to the difference between the radius of the groove and the
radius of the pin. The part 6 is further provided with a slot of the same
depth as the groove band of the same breadth as the projection a².
The connection of the two parts a and is brought about by placing one on the
other in such a way that the enlarged opening as of the slot a' passes over the head
of the pin and the projection a² engages the slot 6³. The parts a and b are then
drawn in opposite directions till the projection a², sliding through the slot 6³, is
received by the annular groove 2. The head of the pin 6' in this position covers
the slot a and thus prevents the parts a and b from being separated as shown in
Figures 1 and 2. To separate the parts a and b, the former is turned round the
pin till the projection a² is opposite the slot 63, it is then pressed outwardly along
the said slot till the enlarged opening a³ is opposite the head of the pin. The
parts cannot become separated accidentally as the scissors or other instrument cannot
open far enough, when cutting, to enable this to take place.
In the nippers shown in Figures 5 and 6, the fastening arrangement, as may be
easily seen from the drawing, is similar to that described above.

page_text: Instead of making the groove b³, as shown in Figures 1 and 3, it can be arranged
as in Figure 1ª. In this case the slot a' is so placed that the enlargement a³, is at
the top, and the projection a* at the bottom. The groove & could be undercut or
recessed on its outer periphery so as to replace the covering head of the pin 6'.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, as communicated to me
by my foreign correspondent, I declare that what I claim is :-
The improved pivot connection for scissors, pincers or like instruments, in which
one member of the instrument is provided with an elongated slot a¹ having a
projection a' at one end of the slot on the inner face of said member, and the other
member is provided on its inner face with an annular groove having a lateral slot 6³,
the projection a being held in engagement with the annular groove by a head on
the pivot pin, adapted to pass through an enlarged portion of the slot a' when the
members are put together, or by undercutting or recessing the outer periphery of
the annular groove and forming the projection of a corresponding shape, substan-
tially as described.
D
Lo
1
L 1001
WM. P. THOMPSON & Co.,
Agents for the Applicant.