With view, however, securing more
practical and efficient circuit -controller in
which not only the relative speed the ter
minals but also the frequency the makes 85
and breaks should very high devised the
the form instrument described appli
cation filed June 1897, Serial No. discovering a
means for avoiding the loss incident the
use ordinary forms circuit-controllers
45 haveled recognize certain laws govern
ing the waste eiiergy and making de
pendent chiefly, the velocity with which
the terminals approach and.
Extended experiment and investigation
conducted with the aim of.
ELECTRICAL-CIRCUIT CONTROLLER. 609,345, dated August 16, 1898.
On the contrary, the current-curve resulting
from make and break generally very
steep and particularly when, sys- 65
tem, the circuit-controller effects the charg
ing and discharging condenser, and con
sequently the loss energy still more
rapidly reduced increased velocity ap
proach and separation.ction-coil the.
practical and economical conversion con
siderable amounts electrical energy it-s
means, particularly cases which high
frequency the makes and breaks re-
43 quired. Such device, though meet
ing fully many requirements practice, is
nevertheless subject certain limitations in
the matter attaining high relative speed
of approach and separation the terminals, 100
since the path movement the conduct
ing projections not directly away from and
toward the fluid, but more less tangential
to the surface the latter, the velocity of
. For example, the ease or
dinary indu.nited States Patent Office.recede from one
another and also more less the form of
50 the current-wave. (N
om
odel. The demonstration 70
of these facts and the recognition the im
possibility attaining the desired results by
using ordinary forms circuit-controllers
led toinvent new and essentially different
means for making and breaking circuit 75
which have utilized conducting fluid, such
as mercury, the material for one both of
the terminals and devised novel means for
effecting rapidly-intermittent contact be
tween the fluid and conductor series 80
conductors forming the other terminal.
To all whom concern:
Be known that Nikola Tesla, resid
ing New York, the county and State of
New York, have invented certain new and
5 .
639,227, which receptacle rotated to
impart rapid movement body con- 90
ducting fluid contained therein, which is
brought rapidly-intermittent contact with
a conductor having peripheral projections
extending into the fluid, the movement the
latter being conveniently utilized rotate 95
the conductor.
The loss energy occasioned the causes
mentioned may very considerable and is
generally such greatly restrict the use of
35 the circuit-controller and render impossible . Serial N
o. The tendency the current per
sist after the actual disjunction precede
the conjunction the terminals exists in
20 varying degrees different forms appa
ratus, according the special conditions
present.
N .
In every form electrical apparatus in-
io volving means for making and breaking,
more less abruptly, circuit waste en
ergy occurs during the periods make or
break, both, due the passage the cur
rent through arc formed between the re-
15 ceding approaching terminals contacts,
or, more generally, through path high re
sistance. Briefly stated, from both
theoretical considerations and practical ex
periment appears that the loss energy
in any device for making and breaking cir
cuit, other conditions being the same, in
versely proportional rather the square than 55
to the first power the speed relative ve
locity the terminals approaching and re
ceding from one another instance in
which the current-curve not steep to
materially depart from one which maybe 60
represented sine function the time;
but such case seldom obtains practice. tendency the
formation arc the break is, rule,
25 the greater, while certain forms appa
ratus have invented which the discharge
of condenser utilized this tendency is
greatest the instant immediately preced
ing the conjunction the contacts thecir-
30 cuit-controller which effects the discharge of
the condenser.} .
Applicationfiled December 2,1897.useful Improvements Electrical-Circuit
Controllers, which the following speci
fication, reference being had the drawings
accompanying and forming part the same.
SPECIFICATION' forming part Letters Patent No. 660,518
