Improvements in Shears.
Year: 1892

page_text: Date of Application, 3rd Feb., 1892-Accepted, 5th Mar., 1892
COMPLETE SPECIFICATION.
Improvements in Shears.
I, JACOB ALBERT SCHMIDT of the firm of Jacob Bunger Sohn of Barmen in the
Empire of Germany, Merchant 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 so construct sheep clipping shears and the like
that the two blades may be separated one from the other for sharpening, by a
simple and expeditious movement, and as simply and quickly put together again.
The improved shears are represented in the annexed drawing in which
Fig. 1 is a side view of the shears.
Fig. 2 is an edge view partly broken on the line a a.
Fig. 3 is a section on line b b.
Fig. 4 a section on line c c.
Fig. 5 illustrates the method of grasping the shears to separate the blades.
Fig. 6 is an edge view of one of the blades.
The nature of the invention consists in so pivoting the two shanks of the bla.les
together by hook like projections taking into suitably shaped slots that the spring
like action and connection of the blades is not impaired, while by a suitable move-
ment the one blade may be swung away from the other in a plane perpendicular to
the plane of the blades and the blades thus separated.
In carrying the invention into effect the shanks H H' of the respective blades
are each made with a spring like inward return bend at their ends terminating in a
flat part m m', so that when these flat parts m m' are placed one on the other in
the same direction, the blades are in position for cutting and the shears are operated
as any other shears.
On the face of one of the parts m' are two hook like projections o o and in the
other part m are two correspond curved slots ii so that by placing the parts one on
the other as in Fig. 6 the hooks enter the slots, and by turning the blades towards
each other the hooks take over the ends of the slots and the two parts m m¹ are
held together against any separation of their adjacent faces. To maintain the
parts m m in this position which is that for rendering the shears ready for use a
projection or projections on one or both of the faces m m' snaps into a recess
or recesses corresponding thereto in the other face so that the shears cannot
accidentally beconic unfastened.
To unfasten the shears to remove the one blade from 'the other the shanks H H¹
are pulled apart as in Fig. 5, and having sprung the blade on the shank H' behind
that on the shank H, the shank H₁ may be moved away and the shank H towards
the operator, until the hooks oo become disengaged from behind the ends of the
slots ii and can be lifted out of the slots.
Other forms of fastening adapted to be unfastened by a rotary movement could
be substituted for the fastening.o o ii without departing from this invention, but
the form described is simple and convenient as the hooks o o can be stamped out of
the metal of the part m' as shown in Fig. 4.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is;-
1. In shears, the combination with the shanks H H1 of the return bent exten-
sions m m' adapted to be secured one on the other and to be separated from each
other by a twisting movement in a plane perpendicular to that of the blades
substantially as described.

page_text: 2. In shears, the combination with the shanks H H' of the return bent exten-
sions mm² secured together by hooks oo and slots ii and fastened by a snap
fastening such as sherein described, for the purpose set forth.
Dated this 3rd day of February 1892.
HERBERT & Co.,
18, Buckingham Street, Strand, London, W.C., Agents to Applicant.