Combined Maximum and Integrating Electric Meter.
Year: 1899

page_text: COMPLETE SPECIFICATION (AMENDED).
Combined Maximum and Integrating Electric Meter.
I, EDWARD SILVEY HALSEY, being an Electrician by trade,, and residing at
1501 and 1502, Manhattan Building, 315, Dearhorn Street, Chicago, Illinois,
U.S.A., 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:-
My invention relates to maximum recording meters and the objects of my
invention are:
First To utilize the common intergrating supply meters that are now in
use and make them perform a second function. At present they are connected
in series with a separate maximum meter (or two of them if on a three wire
circuit) where the maximum meters have been adapted for a discount system.
Second To make a more accurate and reliable maximum meter that is more
easily tested and cared for.
Third A simple means of retarding the revolving of a spindle in its socket,
as will be described more fully herein after and in the claims.
I attain these objects by the mechanism illustrated in the accompanying draw-
ings, in which
Fig. 1 will be recognized as a vertical view of the essential parts of a common
integrating watt-meter, with the attachments necessary to carry out my inven-
tion added thereto.
.
Fig. 2 is a partial section thereof, especially illustrating my attachments
thereto, and the change made in the shaft.
Fig. 3 is a view as it appears looking down from the top with the field coils
and armature removed.
Fig. 4 is a sectional plan view through the line 4-4 of Fig. 2.
Similar numerals refer to similar parts throughout the several views
The several parts of a Thomson watt-meter are indicated as follows: 9 & 9 series
coils; 1 armature; 12 armature shaft; 2 copper retarding disk; 10 bottom bear-
ing; 8 drag magnet; 15 a recording mechanism (shown in fraction) being of
the gear wheel type, carrying a pointer surrounded by figures in circular arrange-
ment in the ordinary way, and is driven by the worm gear at the top of the shaft.
C

page_text: 1
The several parts added thereto in carrying out my invention are as follows:
a second shaft point 13; shown in Fig. 2, and formed by cutting the shaft, and
dressing one end to a point and the other end flat, so that they may work against
each other. The flexible coupling 3, being a sleeve socket embracing the shaft
having their contact dressed with a viscous material, and joined to a spiral
spring 7, which may be known as a part of the flexible coupling 3. The gravity
pall 4 carried at the end of an arm secured to the top of said sleeve; the cap
shaped ratchet wheel 11, having teeth on the lower side or brim, and being
secured to the upper section of the shaft by a set screw, and having riveted to
it an indicator 6, and having secured to the inside of its flange the outer end
of spring 7.
The kilo-watt scale 5. is cut or marked on the rim of the rotating disk 2.
Having briefly described the drawing I will now describe my invention in
full.
A
Taking an integrating meter of any motor_type, preferably one retarded by
a metalic disk, acted upon by drag magnets. I first cut the shaft in two between
the armature and the dragging mechanism, dressing one of the cut ends down
to a point, 13, and the other is made a cup bearing or is polished flat.
metallic sleeve is then fixed rigid to the lower portion of 12, as is seen in Fig. 2.
The ratchet wheel 11 is then secured to the upper portion of the shaft by a set
screw. Now the sleeve which is fixed to the drag portion is coupled, through
the medium of the spring 7, to the ratchet wheel which is fixed to the upper
or motor portion. An arm fixed to the upper end of said sleeve carries a pall 4,
or a suitable clutch, which is adjusted to allow the free advance of the upper
parts carrying the index finger 6, but will not allow a relax. The upper part
is perfectly loose in the sleeve, the scale corresponds to the capacity of the meter,
and the spring is adjusted so that when the pointer reaches the top of the scale
the indication is the full load of the meter. It is evident that the indication
will always be equal to the greatest load that may have passed since the last
resetting, which is accomplished by disengaging the pall and re-establishing the
zero.
It is obvious also that the torque of the armature is opposed entirely by the
lower portion or disk, consequently the torque and drag are always and under
all conditions equal, and further that the springs torsion (it being the medium
through which they are connected) is always equal to the torque of the armature.
The pointer or indicator is of thin elastic metal so that it can spring down
to the disk to take accurate readings.
It is also obvious that my invention is applicable to either ampere or watt
meters of the motor class.
It is quite important that a maximum meter should indicate slowly, so as not
to be seriously affected by accidental over loads or short circuits. I overcome
this trouble by charging the socket formed by the sleeve in which the shaft
moves, with viscous material of rosinous or tarry matter of such a consistency
as to make the motion of the indicator very sluggish, and yet so thick that it
will not run out to an objectionable extent when the meter is left in an inverted
position.'
I am aware that a spring has been attached to a meter shaft for intermittent
use, but I am not aware that any device similar to my invention has previously
been used.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I am aware that it
is not new to employ a ratchet and pawl mechanism in electric maximum
demand meters, and I lay no claim to such niechanism generally, but I declare
that what I claim is:-
1st claim In a combined maximum and integrating electric meter a rotating

page_text: or
motor; a counting mechanism; a maximum indicator being a pointer and scale;
a suitable device for preserving the maximum indication; the armature
rotating part of said motor being revolved in a given direction by, and at a
velocity in proportion to, the measured current, simultaneously operating said
counting mechanism and, by its force, raising the indication on said maximum
scale to the maximum amount passed through the meter.
2nd claim-In a maximum recording electric meter, a motor rotated in a given
direction by the measured current; a breaking or drag mechanism for said
motor being a closed conductor cutting the lines of force of a magnetic field;
an indicator being a suitable pointer and scale to show the maximum effect of
the current passed through the meter; a device to preserve the maximum indica-
tion of said indicator; the force of said motor pulling against the drag between
the said closed conductor and said magnetic field, forcing a relative movement or
indication on said scale, thereby establishing a maximum indication
3rd claim In a maximum recording electric meter. in combination; a pointer
and scale pivoted in moveable relation to one another to indicate the maximum;
a device forcing an indication by the power of the current being measured; a
device for preserving the said maximum indication; a part or surface revolving
opposite another surface or part and dragging through the medium of an inter-
posed viscous material upon said opposite surface or part; one of said parts
or surfaces being fixed with the said pointer and the other of said parts or sur-
faces being fixed in its relation with said scale, thereby making any movement
of indication slow or sluggish, substantially as shown and specified.
al
4th claim In a maximum electric recorder a rotating armature (1);
rotating drag part (2); a suitable indicator set rotating with said parts, one
portion of said indicator set lagging in its circuit behind another part thereof
in correspondence to the load, thus establishing a maximum indication.
5th claim maximum electric current or energy indicator consisting of a
rotating motive part (1); a lagging part (2); an elastic coupling connecting
the two said parts; an indicator (6) carried by one of said parts; an indicator
carried by the other said part whereby the maximum current that may pass can
be determined.
6th claim In a combined maximum and indicating electric meter a motor
part (1); a drag part (2); an elastic coupling (3); a mechanical clutch or
detent (4); and an indicator (6).
7th claim In combination with an integrating electric meter an armature
shaft being of two parts or sections; a sleeve coupling (3) joining to-gether the
two said parts of shaft and fixed to one of them; a dressing of viscous material
on the interior of said sleeve; a spring (7) forming part of the coupling; an
index (5); an indicator (6); a detent or clutch (4), all for the purposes specified.
Sth claim In an electric meter a revolving armature (1): a revolving drag
part and a flexible coupling joining the two said parts to-gether.
9th claim In an electric meter a revolving armature shaft having a flexible
joint and bearing intermediate between the end bearings, as shown and specified.
10th claim-In a maximum electric meter an armature shaft being of two
severed parts, combined with an elastic coupling and a suitable detent prevent-
ing one part of said shaft from returning in its relation to the other part thereof
as specified.
11th claim-In a maximum electric meter the following combination; a
sleeve socket, a stem or spindle moveable in said socket; a viscous material in
said sleeve, and in contact with said stem, retarding any motion between them.
12th claim In a maximum recording instrument a shaft bearing formed by
a sleeve or socket; a dense viscous dressing in said bearing, for the purpose of
preventing any but sluggish motion thereof.
13th claim In a maximum recording meter, an index (5): an indicator (6):
a suitable detent retaining the said parts at a maximum relation to one another;
a rotating armature (1); a drag magnet (8); a rotating metallic disc (2) dragging

page_text: through eddy currents generated therein upon said magnet's field, all combined
with a suitable retarding device to cause a sluggish indication.
14th claim-In a combined maximum and integrating electric meter, an
index (5); a radial indicator (6): a rotating armature (1); a drag magnet (8);
a drag disc (2) acting through its foucault currents upon said magnet; and a
retarding device suitable to permit only a sluggish indication of said indicator.
15th claim In a combined maximum and integrating electric meter, an
armature (1); an indicator (6); a ratchet wheel (11); a pawl (4); a spring (7):
a drag magnet (8): a drag disc (2) acting through its foucault currents upon
said magnet, and viscous material as a retarding agent for said indicator.
16th claim In a combined maximum integrating electric meter an
ture (1) an indicator (6); a spring (7); a drag magnet (8): a drag disc (2)
dragging through its foucault currents upon said magnet; and viscous material
as a retarding agent for said indicator.
arma-
17th claim In a maximum recording meter, an armature (1); a vertical
shaft (12) a cap shaped ratchet wheel (11) on said shaft; a pall engaging the
vertical teeth on the flange of said wheel, a spring coupling (7); an indicator (6)
and a, drag part (2).
18th claim In a maximum recording electric meter, a motor rotated in a
given direction by the measured current: a breaking or drag mechanism for
said motor, being a closed conductor cutting the lines of force of a magnetio
field an indicator being a suitable pointer and scale to show the maximum effect
of the current passed through the meter. A device to preserve the maximum
indication of said indicator. A suitable retarding device to permit only a sluggish
indication the force of said motor pulling against the drag between the said
closed conductor and said magnetic field forcing a relative movement or indica-
tion on said scale thereby establishing a maximum indication.
19th claim In a combined maximum and integrating electric meter an
index (5); a radial indicator (6); a spring (7); a rotating armature (1) a
detent (4); a drag magnet (8); a drag part (2); acting through its foucault
currents upon said magnet thereby producing a maximum indication on said
index.
Dated this 26th day of September 1800