IMPROVE- MENTS IN HAND SHEARS
Year: 1884

page_text: We FREDERICK HARRIS, New George Street Sheffield in the County of York
Manufacturer, and HENRY WOOLHOUSE, 136 Alderson Road of Sheffield aforesaid,
Shear Grinder, do hereby declare the nature of our said invention for "IMPROVE-
MENTS IN HAND SHEARS to be as follows:-
Our invention relates to certain improvements upon the shears described in the
Specification of Patent No 3764, 1874, granted to the said Henry Woolhouse, and
refers more particularly to the joints of such shears, having for its object to
increase the efficiency of the said joint and to otherwise improve the shears.
In carrying out our invention in the construction of a pair of sheep shears for
example, we preferably attach the blades to the shanks by means of rivets or
screwe, so that they may if desirable, be taken off, and be replaced at any time.
The shanks are made hollow in the usual way, and the joint is what may be
termed a four-plate joint, that is, there are four thicknesses of metal through which
the joint pin passes.
It is formed by continuing the sides of the spout shaped shanks, at about right-
angles to the shank, one side projecting considerably more than the other; the
parts of the opposite shank being a fac-simile of those described, so that when put
together they form a compact and strong joint, and are held together by a suitable
bolt and nut passed through the four flat portions of metal.
AU shaped spring is now placed between the shanks, the ends of the spring
resting in the hollow of the shanks.
This spring may be taken out and replaced by one of different strength with the
greatest facility, an advantage readily understood by sheep shearers.
Instead of the blades being attached to shanks formed by casting them to shape
in any suitable metal, we may make each blade and shank of one continuous piece
of material, by punching, stamping or bossing the various parts.
If preferred we may make the joint a three plate joint, that is, one plate to pass
between two plates, and secured by a screw as before described.
ROBT F. DRURY,
Agent for the Applicants.

page_text: We FREDERICK HARRIS, New George Street Sheffield in the County of York
Manufacturer, and HENRY WOOLHOUSE, 136 Alderson Road of Sheffield aforesaid,
Shear Grinder do hereby declare the nature of our invention for IMPROVEMENTS. IN
HAND SHEARS and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement:-
Our invention relates to improvements upon the hand shears described in the
specification of Henry Woolhouse N° 3764, 1874, and refers particularly to the
handles or shanks and the joints of such shears, having for its object to increase
the efficiency of the said joint and to otherwise improve the shears.
And in order that our improvements may be clearly seen and defined we annex
a sheet of drawings, in which the same letters of reference indicate the same parts
in any of the figures in which they occur.
Fig. 1, represents a pair of our improved handshears.
Fig. 2, shows one half of the shears.
Fig. 3, a view of the handle from inside.
Fig. 4, Flat steel spring.
Fig. 5, Edge view of same when bent.
Fig. 6, Screw and nut:
In carrying out our invention in the manufacture of a pair of Sheep Shears for
example, as shown in Fig 1, we preferably punch out the blades A, A',-from steel,
but they may be forged or otherwise made.
We make the shanks B, B', preferably by casting them to the shape shown in
what is known as malleable cast iron, having a slot C for the tang of the blade, and
two side plates D, and D', to form the joint. (The shanks may be made if found
desirable by punching out of sheet steel or iron and doubling over, as is well
understood, or for some uses such as for vine dressing, the blade and shank may
be cast in one piece). The blades are ground and finished and rivetted to tho
shanks at E, E.
When the joint is put together it may be termed a four plate joint that is, the
joint pin F passes through four thicknesses of metal, while the shape of the
plates D-from a stop and prevent the shear blades opening beyond the desired
distance.
After the blades and shanks are put together and secured by the screw F, the
spring shown in Figs 4 and 5, is inserted into the hollows of the shanks as shown
in Fig 1, which completes the shear.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that what
we claim is'
In hand shears, the construction of the joint in the manner, substantially as
hereinbefore described and illustrated.