(1981) Весы Thomas Braby (Томас Брейби) of Lambeth in London. Лондон. Великобритания
Весы Великобритании - https://funtofil.livejournal.com/716896.html
Весы пружинные до 37-ми Фунтов Томаса Брейби (Thomas Braby)
This unusual scale falls into the category of spring scale due to the fact that coach springs were used as the resistant.
It dates from the first half of the 19th century and is attributed to Thomas Braby of London.
There are not many known examples making it a rare acquisition for a collector.
Learn more about scales - https://www.isasc.org/Tutorial/index.html
Весы пружинные до 29-ти Фунтов Томаса Брейби (Thomas Braby)
Коллекция Luc Persoons
Весы пружинные Томаса Брейби (Thomas Braby)
Весы пружинные Томаса Брейби (Thomas Braby)
Весы пружинные Томаса Брейби (Thomas Braby)
Читать - https://www.isasce.com/Edition%2034.pdf
Braby Love
We are still receiving queries from the great British public! A gentleman from the English Midlands had acquired an interesting piece of ironmongery
at a car boot sale and contacted us for further enlightenment. Unfortunately, I was also somewhat unenlightened so had to refer to Diana who put me wise, or at least wiser.
Back articles in Equilibrium advised that the device dated from the first half of the 19th century and was the work of one Thomas Braby of Lambeth in London.
The instrument is described in EQM issue 2 of 1995 when only two examples were recorded, with weighing capacities of 28lb and 42 lb respectively.
The design of the balance seemed to have derived from the maker’s original business in the area of horse drawn transport. Such vehicles incorporated suspension
springs to ensure a less bumpy ride and it must have occurred to somebody that the flexure springs of suspension systems might also have a use as a weighing resistant.
The C spring, D spring and other alphabetically inspired flexures had already been adopted in the Continental Mancur, the Marriot Dial machine etc so theBraby
Scale is seen as novel rather than revolutionary. Flexure springs were inferior in accuracy and precision to the torsion spring in helical form which eventually
became the standard resistant in spring devices.
The example described by our enquirer has a weighing capacity of 29lbs rather than 28lbs indicating perhaps, that the manufacture of each instrument was
a bit on the empirical side of precision.
Весы квадрантные Томаса Брейби (Thomas Braby)
Смотреть - https://collection.sciencemuseumgroup.org.uk/objects/co58050/braby-quadrant-type-postal-scales-pendulum-balance-scales
Braby's Balance, or Weighing Apparatus, unites the properties of the bent lever balance, and the steelyard.
It has been termed a domestic balance by the inventor, from its being peculiarly adapted for family purposes,
such as weighing meat, bread, butter, etc. In the figure A B C is a frame of cast-iron, which has the greater
part of its weight towards A, in consequence of its greater thickness at that part. F is a fixed fulcrum,
and E H a movable suspender, which has a scale and hook at its lower extremity. E K G are three distinct
points to which the suspender E H may be applied, and to which belong, respectively,
the three graduated scales of weights f C, c d, a b. When the suspender is applied at G, the apparatus is in
equilibrio with the edge A B horizontal, and the suspender cuts the zero of the scale a b.
If a weight be now placed in the scale, the whole apparatus turns about F, and the point on the side B C descends till
the equilibrium is again established. The weight placed in the scale may now be read off from the point where
the suspender cuts the scale a b, which registers to ounces, and is adapted to bodies whose weight does not exceed two pounds.
If the weight of the body exceeds two pounds, but is under eleven, the suspender is placed at K; and when the upper
edge of the balance is horizontal, the weight, or number 2, is found a little to the right of the index of the suspender;
if, now, weights exceeding two pounds be placed in the scale, the whole again turns about F, and the weight of the body is
shown on the graduated arc c d, which extends to eleven pounds, and registers to every two ounces. If the weight of
the body exceeds eleven pounds, the suspender is hung on at E, and the weights are ascertained in the same manner on
the scale f C to thirty pounds; the subdivisions on this scale are quarters of pounds. The same principle might be extended
to weights greater than the above. To prevent mistake, the three points of support, G, K, E, are numbered l, 2, 3;
and the corresponding arcs are respectively numbered in the same manner. When the hook is used instead of the scale,
the latter is turned upwards, there being a joint at H for that purpose.
Смотреть - https://chestofbooks.com/crafts/mechanics/Engineer-Mechanic-Encyclopedia-Vol1/Balance-Part-5.html
Braby quadrant type, self-indicating weigher, 1826, size 18"x9 1/2" quadrant in brass with cast-steel counterpoise,
and fixed fulcrum; graduated to weigh tup to 22 lbs Av. by ouces. Inscribed: Braby, maker, Vine St. Lambeth (scale-pan
and its metal suspender missing)
