Improvements in or relating to Indicating Mechanism and Dials for Testing and such like Apparatus.
Year: 1898

page_text: Date of Application, 4th Nov., 1898
Complete Specification Left, 4th Aug., 1899-Accepted, 16th Sept., 1899
Improvements in or relating to Indicating Mechanism and Dials
for Testing and such like Apparatus.
I, GRAYDON POORE, of 213a, New North Road, in the County of London, Civil
Engineer, do hereby declare the nature of this invention to be as follows:-
The
My invention relates to mechanism for use in connection with the indicating
dials of testing and such like apparatus wherein an indicating pointer runs over
a graduated scale upon the dial for the purpose of indicating the test.
invention is particularly applicable to penny-in-the-slot apparatus, such as
weighing machines, strength testers, fortune tellers, and so forth and the object
is to provide novel and efficient means for operating the indicating pointer and
at the same time rendering the cause of its movement invisible to the spectator
and thereby to cause both mystification and amusement.
To this end, instead of connecting and operating the pointer in the usual way
I connect it to and cause it to be driven by the movement of a glass disc
mounted preferably on a knife edge and capable of a required amount of
rotary or angular motion about same. The disc is connected by a
flexible cord or the like from a point on its periphery to a moving part
of the testing mechanism, whatever it may be, in such manner that any move-
ment thereof will transmit some motion to the said glass disc. The glass disc
is connected through suitable intermediate multiplying gear to the pointer which
runs over a suitably graduated stationary glass dial in front thereof. Behind the
moving disc is another stationary glass which may be clear or a mirror. To the
front disc or to both the front and back stationary glass discs are fixed inclined
shields or «
bezels" by which the whole of the peripheral margin of the moving
glass disc is covered and rendered invisible from the front.
Thus on application of the test load or power the glass disc is, through its
connection with a moving part of the machine, caused to perform a corresponding
movement and transmit same through the multiplying gear to the indicating
pointer. Owing to the margin of the glass disc being covered its movement is
invisible to the spectator and no cause for same is apparent or assignable.
Dated this Fourth day of November 1898.
Improvements in or relating to Indicating Mechanism and Dials
for Testing and such like Apparatus.
I, GRAYDON POORE, of 213A, New North Road, in the County of London, Civil
Engineer, do hereby declare the nature of this invention, and in what manner
[Price S.1

page_text: the same is to be performed, to be particularly described and ascertained in and
by the following statement:-
My invention relates to mechanism for use in connection with the indicating
dials of testing and such like apparatus wherein an indicating pointer runs over
a graduated scale upon the dial for the purpose of indicating the test. The
invention is particularly applicable to penny-in-the-slot apparatus, such as
weighing machines, strength testers, fortune tellers, and so forth, and the object
is to provide novel and efficient means for operating the indicating pointer and
at the same time rendering the cause of its movement invisible to the spectator
and thereby to cause both mystification and amusement.
In full description of my invention I will refer to the accompanying drawings
wherein Fig. 1 is a front view of the dial and improved indicating apparatus,
Fig. 2 a sectional side elevation of same, and Fig. 3 a rear view of the indicating
and multiplying mechanisms.
Instead of connecting and operating the pointer in the usual way I connect it
to and cause it to be driven by the movement of a glass disc A mounted centrally
on a knife edge, or upon a sleeve such as is shown running loose upon a finger 1
projecting from a fixed frame B, the said disc A being capable of a required amount
of rotary or angular motion about said finger. The disc A is connected by a
flexible cord a or the like from a point a¹ on its periphery to a moving part of
the testing mechanism, whatever it may be, for instance to the penny-bucket in
coin-freed machines, in such manner that any movement thereof will transmit
some motion to the glass disc; the said motion need only be very slight and is
proportionate to the weight or strength to be tested, as the case may be, and the
disc is returned to original position after operation by means of a counterweight
such as or otherwise conveniently. The glass disc A is connected through
suitable intermediate multiplying gear to the pointer P which runs over a
graduated stationary glass dial 1) in front thereof and to which is attached the
frame B. The multiplying gear shown consists of a quadrant E carried in the
frame B and meshing with a pinion F upon a shaft f to which the pointer P is
fixed said quadrant E is actuated at its lower end e by a slotted arm el connected
to the loose sleeve upon which the glass disc A is mounted so that by the
least rotary movement of the disc A. and quadrant E the shaft F and pointer P
s is
make a proportionately greater movement (say in the ratio of about 1 to 8).
a light spiral spring for preventing backlash between the quadrant E and
pinion F in order to ensure accuracy of indication. Behind the moving disc A
is another stationary plate G which may be of clear glass or a mirror. To the
front dial D or to both the front dial and rear stationary glass disc G are fixed
inclined shields or "bezels" H H by which the whole of the peripheral margin
of the moving glass disc A is covered and rendered invisible from the front. The
usual glass front G¹ is provided in the face of the machine to prevent any tamper-
ing with the pointer l'.
By this arrangement on application of the test load or power the glass disc A
is, through its connection a with a moving part of the machine, caused to perform
a corresponding movement and transmit same through the multiplying gear to
the indicating pointer P. Owing to the margin of the glass disc being covered
by the bezels H H its movement is invisible to the spectator and no cause for same
is apparent or assignable.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is:
In indicating mechanism and dials for testing and such like apparatus, the
improved means for operating the indicator pointer and at the same time obscuring
the cause of its movement, consisting in the combination with a fixed rear plate,
disc, or mirror and a front graduated transparent dial of an intermediate glass

page_text: disc capable of partial rotary or angular movement and connected from its peri-
phery to some moving part of the testing mechanism, intermediate multiplying
gear for operating the pointer, and fixed shields surrounding the moving glass
disc, all arranged or adapted to operate substantially as hereinabove described
and illustrated in the drawing.