Improvements in Self-indicating Weighing Machines.
Year: 1893

page_text: Date of Application, 24th Oct., 1893
Complete Specification Left, 24th July, 1894-Accepted, 8th Sept., 1894
PROVISIONAL SPECIFICATION.
Improvements in Self-indicating Weighing Machines.
HUGH SMITH, Junior, and OSBOURNE SMITH, Engineers, Possil Engine
Works, Glasgow, Lanarkshire, do hereby declare the nature of this invention to be
as follows:-
This invention relates to improvements in self-indicating platform weighing
machines, and consists in the application of a novel indicating arrangement to such
machines.
We hereunto append drawings so that the nature of our said invention may be
understood.
Fig. 1, Sheet 1, represents a front elevation of the indicating arrangement for
a platform weighing machine, and our invention consists in the application of a
segment dial Pand in the application of two or more pointers, the drawing here-
unto appended, Fig. 1, Sheet 1, showing four pointers, A, B, C, and D, respectively.
These pointers are made to revolve, and are of different lengths from the centre
upon which they revolve; and the dial P has rows of indications arranged one
above the other so that as each pointer comes round, its length corresponds with
these rows of indications, and so that we may obtain the indications within small
compass for the greater convenience of the man in attendance reading the said
indications as the cart, truck, or other article to be weighed passes over or is
placed on the platform of the machine. The power to work the pointers A, B, C,
and D is obtained through a system of levers similar to that generally fitted to
platform weighing machines with the ordinary index lever arrangement, and the
aforesaid pointers A, B, C, and D are caused to revolve in a similar manner to that
in which former machines have been made to cause a single pointer to revolve,
which is as follows:-When the article to be weighed is placed on the table or
platform of the machine, the weight acting through the aforesaid system of levers
(of which M is what is usually termed the low lever, attached by a rod to the
lever L at G, the lever L being supported on column at H) causes the float end of
lever L to rise, and the amount or distance which the aforesaid lever L rises
is controlled by a float F attached thereto at K and working in water in a tank T.
The said float F will thus only rise to give as much displacement of water as is due
to the amount of pull exerted thereon by the amount of weight placed on the
table or platform, as hereinbefore described. The pointers A, B, C, and D are
attached to a spindle S to which also a drum O is attached, and round the said
drum two light chains R and V are passed having one end of each secured to the
drum O, the other end of chain R being secured to lever L and the other end of
chain V being secured to a small weight W, so that as the lever L rises and falls,-
the drum O, spindle S, and pointers A B C and D are caused to revolve in the
one direction by the pull of lever L and in the other direction by the weight W.
We may adapt our arrangement of pointers, as herein before described, to any
system of self-indicating weighing machines, whether regulated by means of a
float F as already described, or a spring, or other mechanical arrangement.
Dated 23rd day of October 1893.
HUGH SMITH, JUNR.
OSBOURNE SMITH.

page_text: COMPLETE SPECIFICATION.
Improvements in Self-indicating Weighing Machines.
HUGH SMITH Junr., and OSBOURNE SMITH, Engineers, Possil Engine Works,
Glasgow, in the County of Lanarkshire, 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 relates to improvements in self-indicating platform weighing
machiues, and consists in the application of a novel indicating arrangement to such
machines.
The drawings referred to are those filed with our Provisional Specification.
Fig. 1, Sheet 1, represents a front elevation of the indicating arrangement for a
platform weighing machine, and our invention consists in the application of a
segment dial P and in the application of two or more pointers, the drawing Fig. 1,
Sheet 1, showing four pointers, A, B, C, and D, respectively. These pointers are
made to revolve, and are of different lengths from the centre upon which they
revolve; and the dial P has rows of indications arranged one above the other, so
that as each pointer comes round, its length corresponds with these rows of
indications, and so that we may obtain the indications within small compass for
the greater convenience of the man in attendance reading the said indications as
the cart, truck, or other article to be weighed passes over or is placed on the
platform of the machine. The power to work the pointers A, B, C, and D is
obtained through a system of levers similar to that generally fitted to platform
weighing machines with the ordinary index lever arrangement, and the aforesaid
pointers A, B, C, and D are caused to revolve in a similar manner to that in
which former machines have been made to cause a single pointer to revolve, which
is as follows:-
When the article to be weighed is placed on the table or platform of the machine,
the weight acting through the aforesaid system of levers (of which M is what is
usually termed the low lever attached by a rod to the lever L at G, the lever L being
supported on column at H) causes the float end of lever L to rise, and the amount
or distance which the aforesaid lever L rises is controlled by a float F attached
thereto at K and working in water in a tank T. The said float F will thus only
rise to give as much displacement of water as is due to the amount of pull exerted
thereon by the amount of weight placed on the table or platform, as hereinbefore
described. The pointers A, B, C, and D are attached to a spindle S to which
also a drum O is attached, and round the said drum two light chains R and V are
passed having one end of each secured to the drum O, the other end of chain R
being secured to lever L and the other end of chain V being secured to a small
weight W, so that as the lever L rises and falls,-the drum O, spindle S, and
pointers A B C and D are caused to revolve in the one direction by the pull of
lever Land in the other direction by the weight W.
We may adapt our arrangement of pointers, as hereinbefore described, to any
system of self-indicating weighing machines, whether regulated by means of a
float F, as already described, or a spring, or other mechanical arrangement.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
The novel form of dial with two or more rows of indications, and two or more
revolving pointers of different lengths turning on the same centre, the lengths of

page_text: the pointers being made to correspond with the rows of indications,―the object
being to bring a large number of indications within small compass for the greater
convenience of the man in attendance reading the said indications.
Dated this 23rd July 1894.
HUGH SMITH, JUNR.
OSBOURNE SMITH.