Improvements in Revolution Counters.
Year: 1892

page_text: Date of Application, 28th Nov., 1892
Complete Specification Left, 24th Aug., 1893-Accepted, 7th Oct., 1893
PROVISIONAL SPECIFICATION.
[Communicated from abroad by Dr. OSCAR MAY, Electrical Engineer, of
Oberweg 48, Frankfort on Maine.]
Improvements in Revolution Counters.
I, OSCAR AUGUST BEREND, Engineer, of 61 Fore Street, London, E.C. do
hereby declare the nature of this invention to be as follows:-
This invention consists of a speed-counter, of which the essential differences
from those previously constructed are,
(1.) It is made in the shape of a watch.
(2.) The disc in which the figures are marked is graduated with two different sets
of figures side by side, either one set of which is visible through a perforated plate
covering this disc which can rotate to a certain extent thus causing that set of
figures to be visible under the perforated plate corresponding with the direction of
rotation in the shaft of which it is desired to ascertain the speed.
The chief advantages arising from these alterations are:-
(1.) That the counter can be carried about just like an ordinary watch without
requiring a loose case or other protection.
(2.) That it entirely obviates the possibility of a false reading of the counter
which easily arises if the direction of rotation is not carefully noticed.
The new form of counter is also provided with a means similar to that employed
in a watch to enable the hand or pointer to be set back at zero at any moment.
All the works of the counter are enclosed in a glass faced watch case, to enable
it, as previously mentioned, to be carried loose in the pocket, as all the parts are
completely protected from damage or the admission of dust.
The counter as above described can either be made separately or in conjunction
with an ordinary watch, without being outside the scope of this invention.
Dated this Twenty-fourth day of November 1892.
OSCAR AUGUST BEREND.
COMPLETE SPECIFICATION.
Improvements in Revolution Counters.
OSCAR AUGUST BEREND, 61 Fore Street, London, E.C. Electrical 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 :-
This invention consists of a revolution counter of which the essential differences
from those previously constructed are :-
(1.) It is made in the shape of a watch.
(2.) The disc in which the figures are marked is graduated with two different sets
of figures side by side, either one set of which is visible through a perforated plate
covering this disc which can rotate to a certain extent thus causing that set of
figures to be visible under the perforated plate corresponding with the direction of
rotation in the shaft of which it is desired to ascertain the number of revolutions.
The chief advantages arising from these alterations are:--
(1.) That the counter can be carried about just like an ordinary watch, without
requiring a loose case or other protection.
(2.) That it entirely obviates the possibility of a false reading of the counter
which easily arises if the direction of rotation is not carefully noticed.

page_text: The new form of counter is also provided with a means similar to that employed
in a watch to enable the hands or pointer to be set back at zero at any moment.
All the works of the counter are enclosed in a glass faced watch case, to enable
it as previously mentioned to be carried loose in the pocket, as all the parts
are completely protected from damage or the admission of dust.
The drawings attached hereto represent the counter.
Fig. 1 is a plan view of the lower plate, showing the means employed for
transferring the revolutions of the shaft to the counter.
Fig. 2 is a plan view of the middle plate showing the graduated disc P. -
Fig. 3 is a plan view of the complete works.
Fig. 4 an elevation (section) of the gearing driven by the rotating spindle.
Fig. 5 an elevation (section) of the gearing for moving the indicator, that is to
say, the figured disc.
In order to avoid complication, and to render the drawings as distinct as possible,
the actual watch case is omitted in each drawing.
As is evident from the drawings, the movement or rotation of the shaft which is
to be counted is transmitted to the counter by means of the screw worm A which
is fitted with a triangular point.
This worm drives the worm wheel D, and thence the toothed wheels B & C
which are geared into each other. The toothed wheel C is fitted with a long hub
or sleeve, and is only fixed to the index pointer spindle by friction, the latter can
therefore, by means of the key F or other convenient means, be freely turned in
either direction as required.
The rotation of this frictionally driven spindle E is translated in the usual way
to the pointers L & M by means of the wheel work G H and 1 K exactly as in a
watch. These pointers L & M move over the top plate N which is divided or
graduated at the edge, the graduations depending on the proportions of the gearing
translating the motion of the shaft. Between this plate N and the toothed wheel K
is the numbered or figured disc P, which is kept in contact with the wheel K by
means of the spring O.
On this disc are two sets of figures in numerical order, the one set reading in
reverse direction to the other.
Only the one of these sets of figures, which correspond to the direction of rotation,
is visible through the perforations in the plate N, and this is effected by the
revolution of the gearing carrying with it the disc P, until the latter comes in
contact with the stop Q, thus causing its correct adjustment beneath the plate N.
By means of the key F or other suitable contrivance, the counter
immediately reset at zero after use.
can be
The counter as above described can either be made separately or in conjunction
with an ordinary watch, without being outside the scope of this invention.
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.) A revolution counter fitted with a figured disc P which disc is moveable
within certain limits, and is provided with a double set of figures of which only
that set corresponding with the direction of rotation is visible through the
perforations of a plate N fixed above the disc P.
(2.) In revolution counters of the class described in Claim 1 means to enable the
pointers to be at any time readily set back to zero.
(3.) Revolution counters of the class described in Claims 1 & 2 arranged in
shape like an ordinary watch in glass fronted case.
Dated this Twenty-fourth day of August 1893.
O. BEREND.