A Device for Indicating or Counting the Revolutions of Rotating Bodies.
Year: 1895

page_text: Date of Application, 24th Apr., 1895
Complete Specification Left, 24th Jan., 1896-Accepted, 29th Feb.. 1896
PROVISIONAL SPECIFICATION.
A Device for Indicating or Counting the Revolutions of
Rotating Bodies.
I, FRIEDRICH WILHELM GUSTAV BRUIN, of 1 Schaperstrasse, Berlin, W., in
the Empire of Germany, do hereby declare the nature of this invention to be as
follows:-
This novel device is intended to indicate in a direct manner the number of
revolutions performed by rotary bodies-preferably where they are made to rotate
continuously, or to accomplish a series of turns in succession-and it consists of
three main parts, viz., a hollow ring or annular channel, a ball located within such
hollow ring, and registering or checking mechanism, which is connected with the
said.ring; a feeding or actuating lever or pawl, forming part of such mechanism,
extends through a slot into the annular channel.
The hollow ring or annular channel is connected with the body, whose revolutions
are to be recorded, in such a manner that it together with the recording mechanism:
is rotated along with such body, whilst the aforesaid ball which is comparatively
heavy remains at rest in a convenient position in the lower part of the channel.
Owing to this arrangement the feeding lever or pawl, at each revolution strikes the
ball or weight once, and is shifted sideways by the same until after sliding along,
and over the ball, it drops into the annular space again. Each such movement of
the latter is "ticked" off by the recording mechanism as a sign indicative of the
fact that one revolution has been completed, such mechanism being of any suitable
or well known construction.
It will be observed that the arrangement, together with all of its parts, constitutes
one connected whole, it being feasible for all its component devices to be fitted
together in the builder's factory beforehand, so as to be in readiness for immediate
use. The consequence is, that it is in no case necessary to send out or deliver
apparatus fitted up only partially, and to leave the fitting of the remaining part or
parts to be performed upon their arrival at their destination, which would require
the attendance of an experienced fitter. All that remains to be done at the place
of delivery is to connect the complete apparatus with the rotary body whose.
revolutions it is desired to record or count, an operation for which any unskilled:
operative is qualified. This is a circumstance of paramount importance for the
practical utility of the novel instrument, as in many cases where its application is
useful or desirable skilled labour may not be available.
Dated this 24th day of April 1895.
HASELTINE, LAKE & Co.,
45 Southampton Buildings, London, W.C., Agents for the Applicant.

page_text: Rotating Bodies.
I, FRIEDRICH WILHELM GUSTAV BRUHN, of 1 Schaperstrasse, Berlin, W., in
the Empire of Germany, Director, 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 novel device is intended to indicate in a direct manner the number of
revolutions performed by rotary bodies-preferably where they are made to rotate
continuously, or to accomplish a series of turns in succession-and it consists of
three main parts, viz. a hollow ring or annular chamber, a ball located within such
hollow ring, and registering or checking mechanism, which is connected with the
said ring; a feeding or actuating lever or pawl, forming part of such mechanism,
extends through a slot into the annular channel.
In order to make my invention more clearly understood reference is had to the
accompanying drawing in which
Figures 1 and 2 are sectional side elevations of my improved device illustrating
the positions of the working parts in relation to each other at different states of
action.
Similar letters refer to similar parts in both views.
The hollow ring or annular channel a of which only a fraction is shown in
Figures 1 and 2 is connected with the body, whose revolutions are to be recorded,
in such a manner that it together with the recording mechanisin R is rotated along
with such body, whilst the ball which is comparatively heavy remains at rest in
a convenient position in the lower part of the channel. Owing to this arrangement
the feeding lever or pawl c, at each revolution strikes the ball or weight once,
Figure 1, and is shifted sideways by the same, Figure 2, until after sliding along,
and over the ball, it drops into the annular space again. Each such movement of
the latter is "ticked" off by the recording mechanism, such as R, as a sign
indicative of the fact that one revolution has been completed, such mechanism being
of any suitable or well known construction.
It will be observed that the arrangement, together with all of its parts, constitutes
one connected whole, it being feasible for all its component devices to be fitted
together in the builder's factory beforehand, so as to be in readiness for immediate
use. The consequence is, that it is in no case necessary to send out or deliver
apparatus only partially fitted up, and to leave the fitting of the remaining part or
parts to be performed upon their arrival at their destination, which would require
the attendance of an experienced fitter. All that remains to be done at the place
of delivery is to connect the complete apparatus with the rotary body, i.e. a wheel,
whose revolutions it is desired to record or count, an operation for which any
unskilled operative is qualified. This is a circumstance of paramount importance
for the practical utility of the said novel instrument, as in many cases where its
application is useful or desirable skilled labour may not be available.
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 :-
A device for indicating or counting the revolutions of rotating bodies which
consists of a rotating hollow ring or annular channel, a ball located within such
hollow ring and a registering or checking mechanism; an actuating lever or pawl

page_text: of the said registering mechanism extending into the said annular channel, all
arranged substantially as and for the purpose set forth.
Dated this 24th day of January 1896.
HASELTINE, LAKE & Co.,
45 Southampton Buildings, London, W.C., Agents for the Applicant.