Year: 1898

page_text: Date of Application, 15th Feb., 1898
Complete Specification Lett, 14th Oct., 1893-Accepted, 11th Feb.,
1899
THOMAS WATLING SHORT, WILLIAM JAMES MASON, trading as Short and
Mason, Scientific Instrument Makers, 40, Hatton Garden, London, E.C., do hereby
declare the nature of this invention to be as follows:-
Our invention has reference to improvements in anemometers and has for its
object to enable all the indicating hands or pointers of such instruments to be
readily and quickly returned to zero after each operation of the instruments thereby
obviating the necessity of writing down the last recorded figures before proceeding
to a further operation, in order to make allowance for the same when calculating
the result of the subsequent test.
Anemometers are instruments having trains of toothed wheels and pinions
carrying pointers or hands denoting figures on a dial. Such toothed wheels
pinions and pointers being operated by an endless screw or worm attached to a fan.
Anemometers of this class are made to set to zero by employing either a supple-
mentary wheel. which at will is brought into connection with the train by means
of a lever or one of the wheels of the actual train in either case they are made to
extend beyond the diameter of the case or box containing the mechanism, and by
turning these projecting wheels by hand, the pointers or hands may be returned to the
zero of the dial. Apart from the mechanical difficulties attending these methods
the loss of time in working the several pointers to their respective zero's is
considerable.
According to our invention we obviate this loss of time and the dangers
attendant upon having part of the mechanism projecting from the case, by
arranging that the staff or spindle carrying the pointer or hand be turned directly
on its own centre without in any way interfering with, or actuating the train of
wheels and pinions, and this may be done regardless of whether the endless screw or
worm be in connection with the train of wheels and pinions or not.
To accomplish this we make the staff or spindle carrying the pointer or hand
to turn within its own wheel & pinion-and irrespective of them, each staff or
spindle is produced through the movement plate and squared, and can then be
turned either way by means of a squared pipe, or by a button or winged screw
permanently attached to it.
Dated thin Wiftoonth day of Walun 1908
THOMAS WATLING SHORT and WILLIAM JAMES MASON, carrying on business as
Short and Mason, Scientific Instrument Makers, 40, Hatton Garden, London, E.C.,
do hereby declare the nature of this invention and in what manner the same is to
Price SAT

page_text: be performed, to be particularly described and ascertained in and by the following
statement:
Our invention has reference to improvements in anemometers and has for its
object to enable all the indicating hands of such instruments to be readily and
quickly returned to zero after each operation of the instrument, thereby obviating
the necessity of writing down the last recorded figures, before proceeding to a
further observation in order to make allowance for the same when calculating the
result of this subsequent observation.
Anemometers are instruments having trains of toothed wheels and pinions
carrying pointers or hands denoting figures on a dial such toothed wheels pinions
and pointers being operated by an endless screw or worm attached to a fan.
Some anemometers of this kind are made to set zero by employing either a
supplementary wheel which-at will-is brought to connection with the train
by means of a lever, or by one of the wheels of the actual train-in either case
the wheels are made to extend beyond the diameter of the case or box containing
the movement and by turning these by hand the pointers of the dials can be
returned to zero. Apart from the mechanical diffulties attending these methods,
the loss of time in working the several pointers to the respective zeros is important.
According to our invention we obviate this less of time, and the difficulties
attendant upon having part of the mechanis projecting from the case, by
arranging that the staff or spindle carrying the pointer or hand can be turned
directly upon its own centre without in any way actuating or interfering with
the train of wheels and pinions, and this may be done regardless as to whether
the endless screw or worm be in connexion with the train of wheels and pinions
or not.
To accomplish this we make the staff or spindle carrying the pointer to tuin
within the geared wheel and pinion, and irrespective of them. Each staff is
produced through the movement plate, and the end squared so that it can be
turned in either direction by means of a key-and such key may be separate-or
permanently attached to the square. The annexed drawings more particularly
explain our invention E and F are respectively the top and bottom plates between
which the geared wheels and pinions of the anemometer are contained B is a hollow
pinion which with or without the geared wheel C rivetted on to it fits with what
is known as a "spring fitting" over the staff A, carrying the pointer H, and
allows that staff to be turned within it by means of the-squared projection D
without operating the train-at the same time this fitting is sufficiently tight to
respond to the action of the other wheels and pinions of the train when set in
motion by the fan-without any loss or error arising from the fact of the hollow
pinion B not being otherwise fastened to the staff A. The working part of the
pinion B and the geared wheel C may be fixed at any part of the pinion. The
squared projection D may be turned by a key arrangement to be separate and
applied in turn to each square, or may be turned by a key comprised in a burton,
wing screw, or other arrangement permanently fixed to cach square.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that what
we claim is:-
An improvement in the manufacture of anemometers by which the index hands
can be readily returned to zero after an observation substantially as herein de-
scribed and for the purpose stated.
14:1
1
1900
THOMAS WATLING SHORT.
WILLIAM JAMES MASON.