Improvements in what are known as Automatic or Coin-freed Weighing Machines.
Year: 1889

page_text: Date of Application, 22nd Aug., 1889
Complete Specification Left, 21st June, 1890-Accepted, 26th July, 1890
PROVISIONAL SPECIFICATION.
Improvements in what are known as Automatic or Coin-freed
Weighing Machines.
I, PERCIVAL EVERITT, of 47, Cannon Street, in the City of London, Engineer, do
hereby declare the nature of this invention to be as follows:-
This invention relates to improvements in what are known as automatic or coin-
freed weighing machines, that is to say, of the kind first invented and patented
by me by Letters Patent No. 16433, dated the 13th December 1884, the object
of the present improvements being to simplify the construction and reduce the
cost of the manufacture of such machines and to render their performance more
accurate.
According to my present improvements the underside of the movable platform is
jointed to one end of a lever fulcrummed on centres, knife edges or other suitable
bearings, the other end of the said lever being connected to the balance spring or
other counterpoise in the base of the machine. The said lever carries an arm to
which is jointed one end of a rod, the other end of the rod being jointed to a bell
crank lever connected with a vertical rod or its equivalent, which passes up the stand
or case of the weighing machine behind the dial thereon, its upper end being provided
with a stop.
I employ a toothed quadrant which gears with the pinion on the arbor of the hand
or index, one end of the said quadrant having a counter-weight and the other end
carrying a coin-bucket or receptacle, the said quadrant and its parts being similar to
those described in the Specification of my said former patent, but I now provide the
said quadrant with a stop or projection, so that when the herein before described vertical
rod has been moved down under the effect of the weight of the person or body on the
weighing platform and the proper coin has been inserted in the apparatus, the said
quadrant will be moved on its arbor until the stop of the quadrant comes against the
stop on the said vertical rod, and as the quadrant in its motion moves with it the
indicating hand or pointer the weight of the person or body being weighed will be
indicated on the dial in the usual manner.
When the weight is removed from the platform the parts will return to their normal
position.
COMPLETE SPECIFICATION.
Improvements in what are known as Automatic or Coin-freed
Weighing Machines.
I, PERCIVAL EVERITT, of 47, Cannon Street, in the City of London, Engineer, 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:-
1
This invention relates to improvements in what are known as automatic or coin-freed
weighing machines, that is to say, of the kind first invented and patented by me by
Letters Patent No. 16443, dated the 13th December 1884, the object of the present
improvements being to simplify the construction and reduce the cost of the manufacture
of such machines.
In order to enable my invention to be fully understood I will describe the same with
reference to the accompanying drawing, in which

page_text: Figure 1 is a side elevation partly in section of a coin-freed weighing machine,
constructed according to my present improvements.
Figure 2 is a horizontal section of the same on the line x x of figure 1.
Figure 3 is a rear elevation partly in section of the upper portion of the machine
and
Figure 4 is a horizontal section on the line y y of figure 3.
Similar letters of reference indicate similar or corresponding parts in the
drawing.
According to my present improvements the underside of the movable platform a is
provided with arms b, b which are jointed at c, c to one end of a lever d fulcrummed
on centres at e, e (or it may be fulcrummed on knife-edges or other suitable bearings,)
the other end of the said lever is connected to the balance-spring for other counterpoise
in the base of the machine. 9, 9 are links jointed to the lower ends of the arms b, b
and to the base for the purpose of maintaining the horizontal position of the platform a.
The lever d has an arm h, the free end of which is jointed at i to one end of a rod k,
the other end of which is jointed at / to one arm of a bell-crank lever m, the other arm
of which is connected at n with a vertical rod o (or its equivalent) which passes up the
stand p into the case 9 of the weighing machine behind the dial thereon, its upper end
being provided with a stop r.
I employ a toothed quadrant s which gears with the pinion on the arbor of the hand
or index, one end of the said quadrant having a counter-weight t, and the other end
carrying a coin-bucket or receptacle u, the said quadrant and its parts being similar
to those described in the Specification of my said former patent, but I now provide the
said quadrants with a stop or projection v. By this arrangement when the herein before
described vertical rod o has been moved down under the effect of the weight of the
person or body on the weighing platform a and the proper coin has been inserted
in the apparatus, the said quadrants will be moved on its arbor until the stop v
of the quadrant s comes against the stop on the said vertical rod o, and as
the quadrant in its motion moves with it the indicating hand or pointer the weight
of the person or body being weighed will be indicated on the dial in the usual
manner.
.
When the weight is removed from the platform the parts will be returned to their
normal position by the spring f.
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 an automatic or coin-freed weighing machine connecting the movable platform
with the spring (or other counterpoise) in the base of the machine, substantially as
described and illustrated in figures 1 and 2 of the accompanying drawing.
2. The combination of parts forming the improvements in automatic or coin-freed
weighing machines hereinbefore described and illustrated in the accompanying
drawing.
Dated the 21st day of June 1800
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.