IMPROVEMENTS IN BEAM SCALES, STEELYARDS, AND OTHER HANGING BALANCES."
Year: 1881

page_text: LETTERS PATENT to William Beilby Avery, of Birmingham, in the County
of Warwick, for an Invention of "IMPROVEMENTS IN BEAM SCALES,
STEELYARDS, AND OTHER HANGING BALANCES."
PROVISIONAL SPECIFICATION left by the said William Beilby Avery at
the Office of the Commissioners of Patents on the 29th October 1881.
WILLIAM BEILBY AVERY, of Birmingham, in the County of Warwick.
"IMPROVEMENTS IN BEAM SCALES, STEELYARDS, AND OTHER HANGING BALANCES."
This Invention relates to all kinds of balances which are capable of being
suspended, whether from overhead by a chain or book, or in bearings on the top
of a pillar, and in which a cross or rest for the pan supported by a rigid cranked
bar pendent from the beam is used, and the Invention consists in making. the
cross or rest detachable from the cranked rod for convenience of packing, and at
the same time provide for a perfectly rigid connection when the two parts are put
together for use.
To this end I rivet or otherwise secure on either side of the cranked bar a plate
which projects somewhat beyond the end of the bar. Each of these plates is
formed with a turned up hooked portion on the outer edge, and a turned down
hooked lug or projection on the inner edge, the inner and outer hooked portions
being in the same line.
The end of one of the arms of the cross or rest is formed to fit accurately into
the space between the plates, and is provided with two pins placed a short distance
apart in the same line, and intended to take one over and the other under the
hooked portions of the cranked bar.
When making the connection the rest is placed up against the outer edge of
the bar, and the second pin from the end of the arm is placed in the outer
hooked portion; the rest is then turned down until the other pin on the rest
arm engages under the hooked lug or projection at the back of the cranked bar,
and the connection is completed. By this means a perfectly rigid connection is
made, as the rest arm fitting accurately between the plates prevents any lateral
motion, and the weight of the contents of the pan tends to prevent any vertical
motion.
To detach the rest it is only necessary to turn it up against the face of the
bar and then lift it off.
Instead of securing the side plates to the cranked bar, they may be secured
to the rest arm. In this case however the hooked portions will be formed on
the bar itself, the pins being passed through the plates on the rest arm.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said William Beilby Avery in the Great Seal Patent Office on the
29th April 1882.
WILLIAM BEILBY AVERY, of Birmingham, in the County of Warwick.
"IMPROVEMENTS IN BEAM SCALES, STEELYARDS, AND OTHER HANGING BALANCES."
This Invention relates to balances which are capable of being suspended, whether
from overhead by a chain or hook, or in bearings on the top of a pillar, and have a
cross or rest for the pan supported by a pendent cranked bar. The Invention
consists in making the cross or rest detachable from the cranked bar for con-
venience of packing, providing at the same time for a perfectly rigid connection
when the two parts are put together for use.
In the accompanying Drawings, Fig. 1 shews in side elevation the pendent
cranked bar with its rest attached thereto according to my Invention.
Fig. 2 is an edge view of the same, and Fig. 3 is a plan view of the rest detached
from its supporting bar.
The cranked bar A terminates at its upper end as usual in a hook or eye, which
is suspended from the end knife-edge of the scale beam.
The lower end of this bar is formed with or has rivetted or otherwise secured to
it a pair of plates a, a, which project somewhat beyond the end of the bar. Each
of these plates is similarly formed with a turned up hook a' on the outer edge, and
a turned down hook a on the inner edge.
B, B, B', is the rest, which in this case is formed of threo radial arms for
receiving the scale pan. The arm B is formed to fit accurately into the space
between the plates a, and is provided with two pins b, b, placed a short distance
apart in the same line, and intended to take one under and the other over the
looks a, a, of the plates a, and rest both in the same horizontal plane, by which
means the scale pan will be held in a horizontal position, and its centre will be
brought into the line of suspension of the cranked bar.
When making the connection the rest is placed up against the outer edge of the
bar, as shewn by dots in Fig. 1, and the pin b' is placed in the hooks a¹; the rest
is then turned down until the pin bengages with the hooks a² at the back of the
cranked bar, the connection is then completed. By this means a perfectly rigid
coupling is made, as the rest arm fitting accurately between the plates prevents
any lateral motion, and the weight of the contents of the pan tends to prevent any
vertical motion.
To detach the rest it is only necessary to turn it to the dotted position of Fig. 1,
when it may be lifted off.
In
An obvious modification of this Invention is illustrated at Figures 4 and 5.
Fig. 4 being a side view of the coupling, and Fig. 5 a back view of the same.
this example side plates a' are secured to the rest arm B², and serve to carry the
pins b, b; and the hooks a', a³, are formed from the pendent bar A itself by
casting or forging.
In this case the parts are attached by inserting the end of the bar A between the
plates of the rest aru, and engaging the hooks with the pins in the manner before
described.
Having now set forth the nature of my Invention of "Improvements in Beam
Scales, Steelyards, and other Hanging Balances," and explained the manner of
carrying the same into effect, I wish it to be understood that under the above in
part recited Letters Patent I claim,―

page_text: Connecting the scale pan rest with its pendent cranked bar by a rigid hooked
coupling, in the manner and for the purpose above explained.
In witness whereof, I, the said William Beilby Avery, have hereunto set my
band and seal, the Twenty-eighth day of April, in the year of our Lord
One thousand eight hundred and eighty two.
Witness,
WILL. H. BEACH,
Woodfield,
Oaken,
Nr. Wolverhampton.
WILLIAM BEILBY AVERY. (LS.)