Improved Regulator for Electric Currents.
Year: 1889

page_text: Date of Application, 26th Nov., 1889-Accepted, 4th Jan., 1890
COMPLETE SPECIFICATION.
Improved Regulator for Electric Currents.
I WENZEL ROBERT MICHL of Wettr on the Rubr, in the Kingdom of Prussia
German Empire, Electrician 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 has for its object to provide a self-acting regulator for electric
currents and the manner in which I prefer to carry my invention into effect is shewn
in the accompanying drawings.
A box, open at the sides made up of the boards X X¹ serves for receiving the
resistance spirals and is fixed at a convenient place against a wall. On the board X
the contact-plates P 1-19 the number of which may be altered as desired are
arranged in a semi-circle and underneath them are two brackets CC¹ to which
the shunt magnets M & M' are fixed, the anchors A & A¹ of which are connected
with the regulator casing, which consist of plates q & q¹ connected to each other
by means of bolts H, H¹ & H2 and connected with box X, X¹ by means of the
lengthened bolts H2 & H³. The fixed shafts d & d' which carry the anchors A & A¹
are turnable on the shaft, and the turnable shaft W for the wheel mechanisms are
bedded in the plates q & q'.
Perpendicularly on shaft W and firmly connected with it stands shaft a with cone-
wheel D' which is geared in the mitre-wheels G, G, which are both provided with
toothed rings that can be geared in the chain-discs N, N¹. The mitre-wheels and
chain discs are turnable on shaft W and the one end of chains k k¹ which pass
over the discs is fixed to the front wall of casing q, while the other chain end
hangs free.
The wheel R which is fixed firmly on shaft W gears with the lower toothed half
in the mechanism T¹ the shaft of which carries the fly wing P. The upper non-
toothed half of the wheel R is provided with a semi-circular slit S₁ for the through
going bolt H2 and above such slit the sliding spring F is fixed, the outwards hent
point of which slides on the contact plate P.
In the rest position both anchors are drawn towards the spiral spring and with
the catches standing out from shanks ss clicked into the toothed rings of
wheels G G¹, but as soon as the strain alters, the position of the anchors also
alter.
In the position as in the drawing the tension is too high and consequently the
piston of the solenoid K which is connected with the pole of a dynamo, has been
raised, whereby the pin f2 comes in contact with spring f and sends the current to
shunt-magnet M.
The shunt-magnet attracts anchor A¹ and thereby causes the catch of shank to be
raised from the toothed ring of wheel G. The weight L hanging on the chain now
pulls the latter downwards and thereby causes the wheel G to turn, which thereby
sets cone-wheel D in motion, but as wheel G prevents the former from rotating on
its own shaft, it must turn G¹, whereby shaft W and with that also wheel R turn in
the direction indicated by arrow, so that the slide spring F places itself against a
higher marked contact plate and thereby connects as many resistance spirals as are
required in order to establish the proper tension.
As soon as the proper tension has been attained the anchor A rises from the shunt
magnet M and the pin on the shank again catches the toothed ring of wheel G,
whereby it is stopped and any further turning of wheel R is prevented.
The contrary action is attained with the regulator when the tension decreases,
for then the solenoid piston sinks and gives f³ contact with spring f¹, hereupon the
current reaches shunt-magnet M¹ which attracts anchor A and thus brings the pin

page_text: on the shanks away from the toothed ring of wheel G. The weight L now causes
the wheel g¹ to turn and that again the mitre-wheel D on shaft W and wheel R' in
the opposite direction, whereby the sliding spring F places itself on a lower marked
contact plate P when the proper. tension is attained, that is to say the requisite number
of resistance spirals where put out of contact.
When the chains are run out then the discs are released from wheels G G¹ and
the weights may then be pulled up as the discs are loose on shaft W.
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:
An improved regulator for electric currents arranged substantially as described
and shewn in. the drawings.
London, the 26th day of November 1889.
WENZEL ROBERT MICHL.
Per C. R. Bonne & Co.,
41, Eastcheap, Reg. Pat. Agents.