Improvements in Scissors and the like.
Year: 1890

page_text: Date of Application, 7th Mar., 1890-Accepted, 12th Apr., 1890
COMPLETE SPECIFICATION.
Improvements in Scissors and the like.
We FRIEDERICH WILHELM BECKMANN and JOHANN ALBERT HENCKELS both of
Solingen in the Empire of Germany, Manufacturers 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:-
The object of this invention is to enable a pair of scissors or the like to be taken to
pieces in a quick and easy manner, without injury to the parts such as the screw thread
of the pivot and the female screw therefor, as has been the case heretofore with the
usual construction of scissors. A further object is to render possible the regulation of
the tension between the blades or the pressure of the blades one upon the other.
Generally it is not necessary to take scissors frequently to pieces; with surgical
scissors however this must or ought to be done after each use for the purpose of
disinfection. This invention is therefore especially suitable to surgical scissors.
In the accompanying drawing is shown a pair of surgical scissors constructed
according to this invention. Figs. 1 and 2 are front elevations of the pair of scissors
opened and closed respectively. Fig. 3 is a side elevation and fig. 4 a section on
line a a of fig. 2. Fig. 5, is a cross-section on line bb of fig. 2.
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R and R are the handles of the two scissor-halves, which are revolvably connected
by the pivot m, of the two blades & and s' the one blade s is adapted to slide in tho
part R belonging thereto, so that it is moved within said part to produce a drawing-
cut. The mechanism of producing this drawing-cut has however nothing to do with
the present invention and being well known needs no further explanation.
This invention relates to the connection and the tightening of the blades on the
pivot m. With most scissors this adjustment is done by a rivetting of the pivot-end
after the two parts have been connected by the pivot; sometimes by a female screw
provided in the one part for engagement of the screw threaded end of the pivot. In
the present instance the pivot is neither rivetted nor provided with scrow-threads.
The pivot m has however two grooves or recesses e el opposite to each other, within
which is placed a plate k provided with a slot so that the arms rest up against the
under edge of the head d of the pivot m. The plate as seen by figs. 3 and 4, is bent
or curved to provide a rest for the plate upon the blade R¹. The other end of the
plate can be fastened down towards the blade R' by a screw v. By tightening the
screw v, the pivot m is drawn up by the plate k and the plate k is brought into tension.
By tightening the screw more or less the tension between the blades can be adjusted
as required. To take the scissors to pieces, the screw is loosened, and the plate k
withdrawn from the pivot m, after which the latter can be removed.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed, we declare that what we
claim is:
The combination with the two scissor blades of the pivot connecting them, a lever-
plate engaging with said pivot at one end and attached by an adjustable screw at
the other end to one of said blades, whereby the blades are held on the pivot and
pressed together with adjustable tension substantially as and for the purpose set
forth.
HERBERT & Co.,
18, Buckingham Street, Strand, London, W.C., Agents to Applicants.