Improvements in the Mode of and Means for the Rectification of Weights.
Year: 1893

page_text: Date of Application, 11th Oct., 1893
Complete Specification Left, 11th July, 1894-Accepted, 6th Oct., 1894
PROVISIONAL SPECIFICATION.
Improvements in the Mode of and Means for the Rectification of
Weights.
I, JOHN SMITH, of Bewdley, in the County of Worcester, Brassfounder do
hereby declare the nature of my said invention to be as follows:-
My invention has for its object improvements in the mode of & means for the
rectification of weights by which means I enable inspectors of weights and
measures to readily rectify weights in accordance with the requirements of the law
and at the same time without the machinery or tools which has hitherto been
necessary to properly effect the purpose.
In carrying my invention into effect I provide a special tool to be afterwards
described by means of which I am enabled by the aid of an ordinary brace to form
a groove around the bottom of the ordinary recess which is formed for the purpose
of receiving the additional metal required to be added to the weight. I then take
a domed metal cup or disc which is of the same size as the hole sunk and which I
insert in the sinking with the dome up after which I punch the dome in so that the
edges of the disc enter the groove previously formed in the recess. If required
lead may be inserted in the recess prior to the brass disc being inserted. The
special tool for forming the groove consists of a steel tube of the same diameter as
the recess and having a solid point which fits in the centre of the sinking or recess.
Two, three, or more slots are formed in the sides of the tube in which two, three,
or more, cutting tools are so mounted as to be operated by an internal cone which
is screwed into the brace end of the tool so that when the tool is inserted in the
recess the turning of the screw causes the cutters to protrude and thus cut the
groove when the tool is revolved by the brace. The cutter points are provided
with inclines so that after the cone has been withdrawn the tool can be taken from
the recess ready for the insertion of the metal discs as before described.
Dated this 10th day of October 1893.
GEORGE BARKER,
77, Colmore Row, Birmingham, Agent.
COMPLETE SPECIFICATION.
Improvements in the Mode of and Means for the Rectification of
Weights.
1, JOHN SMITH of Bewdley in the County of Worcester Brassfounder do
hereby declare the nature of my said invention and in what manner the same
is to be performed to be particularly described and ascertained in and by the
following statement :--
My invention has for its object improvements in the mode of & means for the
rectification of weights by which means I enable inspectors of weight and measures
to readily rectify weights in accordance with the requirements of the law and at the
same time without the machinery or tools which have hitherto been necessary to
properly effect the purpose.

page_text: In carrying my invention into effect I provide a special tool to be afterwards
described by means of which I am enabled by the aid of an ordinary brace to form
a groove around the bottom of the ordinary recess which is formed for the purpose
of receiving the additional metal required to be added to the weight. I then take
a domed metal cup or disc which is of the same size as the hole sunk and which
I insert in the sinking with the dome up after which I punch the dome in so that
the edges of the disc enter the groove previously formed in the recess. If required
lead may be inserted in the recess prior to the brass disc being inserted. The
special tool for forming the groove consists of a steel tube of the same diameter as
the recess and having a solid point which fits in the centre of the sinking or recess.
Two, three, or more slots are formed in the sides of the tube in which two three or
more cutting tools are so mounted as to be operated by a internal cone which is
screwed into the brace end of the tool so that when the tool is inserted in the recess
the turning of the screw causes the cutters to protrude and thus cut the groove
when the tool is revolved by the brace. The cutter points are provided with
inclines so that after the cone has been withdrawn the tool can be taken from the
recess ready for the insertion of the metal discs as before described.
In order that my invention may be clearly understood and more casily carried
into practice I have appended hereunto a double sized sheet of drawings upon
which I have fully illustrated my said improvements and the mode of carrying the
same into effect.
"Figure 1 is an elevation of the tool for making the groove.
Figure 1 is a vertical section through Figure 1. .
Figure 2 is a cross section through same.
! J
I
Figure 3 is a section through part of a weight shewing the ordinary recess:
Figure 4 is a similar section to Figure 2 but shewing the groove formed around
same.
Figure 5 is a section of the domed disc.
Figure 6 is a similar section to Figure 2 shewing the disc inserted.
Figure 7 is also a similar section but shewing the disc punched home into
*position.
;
In carrying my invention into effect I provide a special tool A to be afterward's
described by means of which I am enabled by the aid of an ordinary brace to form
a groove around the bottom of the ordinary recess B which is formed for the
purpose of receiving the additional metal required to be added to the weight. I
then take the domed metal cup or disc C which is of the same size as the sunk
hole B and which I insert in the sinking with the dome up as shewn by Figure 6
after which I punch the dome in so that the edges of the disc enter the groove b
previously formed around the side of the recess as shewn at Figure 7. If required
lead may be inserted in the recess prior to the brass disc C being inserted.
The special tool A for forming the groove consists of a steel tube of the same
diameter as the recess B and having a solid point a' which fits in the centre of the
sinking or recess B. Two, three or more slots are formed in the sides of the tube
in which two three or more cutting tools E are so mounted as to be operated by an
internal cone F which is screwed into the brace end of the tool so that when the
tool is inserted in the recess the turning of the screw causes the cutter points E
to protrude and thus cut the groove when the tool is revolved by the- brace.
The cutter points are provided with the inclines faces e so that alter the cone
has been withdrawn the tool can be taken from the recess ready for the insertion
of the metal discs as before described.
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 :-
1st. The improvements in the mode of and means for the rectifications of weights
substantially as and for the purpose herein set forth and shewn upon the accompanying
drawing.

page_text: 2nd. The tool A for undercutting the groove b substantially as and for the
purpose herein set forth and shewn upon the drawings.
Dated this 10th day of July 1894.
GEORGE BARKER,
77, Colmore Row, Birmingham, Agent.