An Improved Instrument for Opening Sheet Metal Cans or Boxes.
Year: 1891

page_text: Date of Application, 23rd Dec., 1891
Complete Specification Left. 22nd Sept., 1892-Accepted, 22nd Oct., 1892
PROVISIONAL SPECIFICATION.
An Improved Instrument for Opening Sheet Metal Cans or Boxes.
We, THOMAS WILLIAM NEWEY and JOSEPH HENRY NEWEY, trading together
as Thomas Newey and Sons, of Allison Street, in the City of Birmingham, Joiners
Tool and Steel Toy Manufacturers, do hereby declare the nature of this invention
to be as follows:-
This invention consists in the hereindescribed improved instrument for opening
sheet metal cans or boxes which is so constructed as to be cheap to manufacture
and when in use is not liable to slip, is self guiding and makes a very clean cut.
The said instrument consists of a short pointed blade of the usual form which is
shouldered down at one end to form a shank which is threaded through a guiding
and fulcrum plate and driven into or otherwise secured to a wooden or other handle.
The said guiding and fulcrum plate thus held very securely between the shoulders
of the blade and the end of the handle.
The guiding and fulcrum plate is situated at the base of the blade in a plane at
right angles thereto. That side of the guiding and fulcrum plate which bears on
the top of the sides of the case or box when the instrument is in use, has a notch
in which the top of the sides of the case or box engages as the cut is being made
thus keeping the blade in position and the cut close to the edge of the case or box.
A portion of the lower side of the guiding and fulcrum plate bears upon that
portion of the top of the case or box which is being cut out and by preventing
this portion rising a cleaner cut is made. This is an important feature of this
invention.
Dated this 22nd day of December 1901
CHARLES BOSWORTH KETLEY,
Agent for the Applicants.
COMPLETE SPECIFICATION.
An Improved Instrument for Opening Sheet Metal Cans or Boxes.
We, THOMAS WILLIAM NEWEY and JOSEPH HENRY NEWEY, trading
together as Thomas Newey & Sons, of Allison Street, in the City of Birmingham,
Joiners Tool and Steel Toy 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 :-
This invention consists in the hereindescribed improved instrument for opening
sheet metal cans or boxes which is so constructed as to be cheap to manufacture
and when in use is not liable to slip, is self guiding and makes a very clean cut.
We will describe this invention by referring to the accompanying drawings
on which
Fig. 1 is a side elevation and Fig. 2 is a plan and Fig. 3 is a front view of our
said improved instrument; Figs. 4 and 5 shew parts of the same separately and
Fig. 6 shews how the said instrument is used.
The same letters of reference indicate the same parts in all the figures.
The said instrument consists of a short pointed blade A. of the usual form (shewn
separately by Fig. 4) which is shouldered down at one end a¹ to form the shank a²
which is threaded through the hole 6' in the guiding and fulcrum plate B (shewn
separately by Fig. 5) and is driven or otherwise secured to a wooden or other
handle C. The guiding and fulcrum plate B is thus held see Figs. 1 and 2 very

page_text: securely between the shoulders a' of the blade A and the end c of the handle C.
The guiding and fulcrum plate B is situated at the base a' of the blade A in a
plane at right angles thereto. The lower side of the said plate B, that is the side
which bears on the top of the sides of the can or box D when the instrument is
in use as shewn in Fig. 6 has a notch 62 in which the top d of the sides of the can
or box D engages as the cut is being made thus keeping the blade A in position
and making the blade self guiding and non liable to slip and ensuring the cut
(indicated by the line e in Fig. 6) being made close to the edge of the can or box.
A portion of the lower side of the guiding and fulcrum plate B is shaped as
shewn so as to bear upon the portion marked in Fig. 6 of the top of the can or
box D which is being cut out and by preventing this portion rising a very clean
cut is made. This is an important feature of this invention.
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 :-
:
1. In an instrument for opening sheet metal cans or boxes and in combination
with blade thereof such as A, the use of a guiding and fulcrum plate such as B
shaped so as to engage with the top of the sides of the box or case and bear upon
the part which is being cut out, substantially as hereinbefore described and
illustrated by the accompanying drawings.
2. The improved instrument for opening sheet metal cans or boxes hereinbefore
described and illustrated by the accompanying drawings.
Dated this 21st day of September 1892.
CHARLES BOSWORTH KETLEY.
Agent for the Applicants.