Improvements in Apparatus for Regulating the Arc in Electric Arc Lamps.
Year: 1892

page_text: Date of Application, 12th July, 1892
Complete Specification Left, 11th Apr., 1893-Accepted, 13th May, 1893
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Regulating the Arc in Electric
Arc Lamps.
We, ALFRED WILLIAM MONEY, and HERBERT NASH, both of 19 Palace
Gardens Mansions, Notting Hill Gate, in the County of Middlesex, Electrical and
General Engineers, do hereby declare the nature of this invention to be as
follows: :-
:.
The invention has for its object an improved construction of apparatus for
regulating the arc in electric arc lamps.
In carrying our present invention into operation we preferably employ two electro-
magnets, one in series with the main circuit, the other a shunt across the arc, such
electro-magnets being connected to rocking levers, the centre of which latter is
pivotted to a fixed axis. One of these rocking levers is connected by a link with
the regulating clutch or break apparatus hereinafter described.
The axis of the pinion gearing into the rack rod has, as heretofore, a break or
clutch wheel or disc secured thereon, and mounted loosely on such axis is a lever,
which is either forked or double so as to pass on each side of the wheel or disc
and take its bearing on the axis at each side thereof.
This double or forked lever has pivotted thereto the outer end of the short arm
of a bell crank lever, whose long arm is, at its outer end, connected, by the aforesaid
link, with the rocking lever before described. At or near the angle of the said
bell crank lever is mounted a friction pad to act against the periphery of the break
wheel or disc.
At a suitable point on the rocking lever, between its axis and the end thereof to
which is pinjointed the link connected with the bell crank lever, we connect the
upper end of another link, whose lower end is connected to the outer end of the
double or forked. lever. The connection between the rocking lever and the last
mentioned link is by a pin in the rocking lever passing through a short slot in the
upper end of said link, thereby producing a lost motion which causes the said link,
in combination with the aforesaid link and bell crank lever, to cause the friction
pad to be gradually applied to, and to be gradually removed from, the break or
clutch wheel.
As the rocking levers move on their axis in one direction, the friction pad is
pressed against the periphery of the break or clutch wheel or disc and gives it a
slight turn, which, by the pinion and rack, separates the two carbon points. Then,
as the resistance of the arc increases, which is caused by the consumption of the
carbons, the rocking levers are made to rock on their centre in the contrary
direction, whereby the long arm of the bell crank lever is lowered and thereby
draws the friction pad away from the wheel or disc, the action of the second link
causing this withdrawal to take place in a very gradual manner, thereby checking
the too sudden descent of the carbon, which latter falls by gravity until the
resistance of the are is at its normal, at which time the friction pad is applied to
the wheel or disc, thus holding the rack rod in position until the carbons are further
consumed.
We would have it understood that various arrangements of electro-magnets may
be employed for acting upon the bell crank lever carrying the break or clutch
lever.
Dated this 10th da
[Price 8d.]
ALFRED WM. MONEY,
HERBERT NASH,
By Harris & Mills,
23, Southampton Buildings, London, W.C., Agents.

page_text: COMPLETE SPECIFICATION.
Improvements in Apparatus for Regulating the Arc in Electric
Arc Lamps.
We, ALFRED WILLIAM MONEY, and HERBERT NASII, both of 19 Palace
Gardens Mansions, Notting Hill Gate, in the County of Middlesex, Electrical and
General Engineers, 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, reference being had to the accompanying
drawings and to the figures and letters marked thereon:-
The invention has for its object an improved construction of apparatus for
regulating the arc in electric arc lamps.
In the accompanying drawings
Figures 1 and 2 are two elevations drawn at right angles to each other and
Figure 3 is a sectional plan drawn on the line 1. 1. of Figure 1 of an electric arc
lamp fitted with our improved regulating apparatus.
In carrying our present invention into operation we preferably employ_two
electro-magnets a, b, one, a, in series with the main circuit, the other, 6, a shunt
across the arc, the cores a' b¹ of such electro-magnets being connected to rocking
levers cc, the centres of which latter are pivotted to a fixed axis d. One of these
rocking levers c c is connected by a link i with the regulating clutch or break.
apparatus hereinafter described.
The axis e of the pinion e¹ gearing into the rack rod f, has, as heretofore, a break
or clutch wheel or disc e secured thereon, and mounted loosely on such axis e is a
lever g, which is either forked or double so as to pass on each side of the wheel or
disc e and take its bearing on the axis e at each side thereof..
This double or forked lever g has pivotted thereto the outer end of the shorter
arm of a bell crank lever, whose longer arm is, at its outer end, connected, by the
aforesaid link i, with the rocking lever c before described. At or near the angle of
the said bell crank lever his mounted a friction pad j to act against the periphery
of the break wheel or disc e².
At a suitable point on the rocking lever c, between its axis d and the end thereof
to which is pinjointed the link i connected with the bell crank lever h, we connect
the upper end of another link k, whose lower end is connected to the outer end of
the double or forked lever g.
The connection between the rocking lever c and the last mentioned link k is by a
pin c¹ in the rocking lever passing through a short slot ¹ in the upper end of said
link, thereby producing a lost motion, which causes the said link k, in combination
with the aforesaid link i and bell crank lever h, to gradually apply the friction
pad j to, and gradually remove it from, the break or clutch wheel e².
As the rocking levers c move on their axis in one direction, the friction pad is
pressed against the periphery of the break or clutch wheel or disc e³ and gives it a
slight turn, which, by the pinion e¹ and rack ƒ, separates the two carbon points.
Then, as the resistance of the arc increases, which is caused by the consumption of
the carbons, the rocking levers c are made to rock on their centre d in the contrary
direction, whereby the longer arm of the bell crank lever is lowered and thereby
draws the friction padj away from the wheel or disc e², the action of the second
link causing this withdrawal to take place in a very gradual manner, thereby
checking the too sudden descent of the carbon, which latter falls by gravity until
the resistance of the arc is at its normal, at which time the friction pad ; is applied
to the wheel or disc e, thus holding the rack rod f in position until the carbons are
further consumed.
We would here remark that various arrangements of electro-magnets may be
employed for acting upon the bell crank lever h carrying the friction pad j.

page_text: Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we-
claim is :-
1. The novel construction and arrangement of apparatus for regulating the arc
in electric arc lamps, substantially as herein shown and described.
2. In electric arc lamps, the combination with rocking levers operated by any
suitable arrangement of electro-magnets, of arc regulating apparatus consisting of
double or forked lever g mounted on the axis e of the pinion e' gearing with the
rack rod, a clutch wheel or disc e' on the axis e, a bell crank lever / pinjointed at.
the outer end of its shorter arm to the lever g, a friction pad ; at the angle of the
said bell crank lever to act against the clutch wheel or disc e, a link i pinjointed
to the outer end of the longer arm of the bell crank lever hand to the longer end
of a rocking lever c, and a link k pinjointed to the outer end of the double or forked
lever g and connected by a pin and slot to a rocking lever c, substantially as herein.
shown and described.
3. In arc regulating apparatus for electric arc lamps, the combination with rocking
levers operated by any suitable arrangement of electro-magnets and with a suitable
break or clutch wheel, of a lever g carrying the axis of a bell crank lever h, a
friction pad j at or near the angle of said bell crank lever h and acting against the
break or clutch wheel, and suitable connections between such levers g and h and a
rocking lever c, substantially as herein shown and described.
Dated this 11th day of April 1893.
A. W. MONEY,.
H. NASH,
By Harris & Mills,
23, Southampton Buildings, London, W.C., Agents.