case its
a lic tio ill e
sp ific lly esc rib .1,329,569
and continuous, but intermittent, the fluid
being quickly deflected and reversed di
rection, set whirling motion, brought to
rest and again accelerated, these processes
5 following one another rapid succession. Its efficacy chiefly
determined; first, the magnitude the
SO ratio the two resistances offered dis
turbed and undisturbed flow, respectively,
in the directions from and fróm to
4, each individual element the con
duit; second, the number complete
35 cycles action taking place given
length the valvular channel and, third,
by the character the impulses themselves.
T lia tio
d r
65 elem ents, tly ,
cy lic cesses n
o nclusion* ire t
p tio lity ecau successive ac
tio ity fin ite lim its ;
h er, stru tiv 70
w ise it
le eco i
c sig g
e erien ce. only
25 acts hinderment the bodily return
of particles but also, measure, a
check the propagation disturbance
through the medium.
8 illu d
in fix d
fittin fre lin 10.
I tte 85
s firs . order to
bring the fluid masses rest and high
velocity short intervals time energy
20 must furnished rate which unat
tainable, the result being that the impulse
cannot penetrate very far before sub
sides and gives rise movement the
opposite direction. tic ,
th st
is . ach case
th ill tio a
h lic coefficient le
50 eflectio llo t,
’ sam ity tio o
re sista ill coeffi
c ts.
th ill com
p 16, 125
d ice l
lo fre ssa cesses ill
b succession.
Q ite 75
o ice lses
h flu its rfo e
a lts ill secu red en
th ria tio s
o tiv 80
w ile t
5. tic tio
m as
55 less lth rfa frie -
' tio ire tio
tu flow eep e
as ssib le, ,
f ill sista -
60 efficiency. isto n
a lin ith d
o tle rts tiv 20.
T ilia 105
s tiv rim tio ,
te illa r”, ith ich
i tic stem con
s tim r
m 110
S illa tio s
a rte ean e
p rin ,
th tio ill
d lan ile 115
d ire tio lid rro fro ,
th ill ress r
m rtm t
fro sam ices d
h tin tiv clo sed 120
o alv es.
A sio rrie second
p lid 100
e sily lin closed y
p sleeves al. wiil readily
observed that the resistance offered the
passage the medium will considerable
even under constant pressure, but
the impediments will full effect only
15 when supplied pulses and, more es
pecially, when the same are extremely sud
den and high frequency. e
n are* tio n
w ith irs, scilla- 130
. e
p site ire tio fro to
1 ile filled .
A fair idea may gained from simple
theoretical considerations,
40 clo sely
e tio ill seen fro m
one ire tio f
d flow flu o
c eflectio 180
45 ile ffe
v tio fro en
m site sense. is
clo sed fla 90
12 sleev stu ffin 14
f tio o
c rtm ts, 16, lin is
e sta lish d
e ila rly 95
F lic ity ice re
d tic lly lid rro s
in tin ire tio flow .
The partitions serve direct the stream
upon the buckets and intensify the ac
tions "causing violent surges and eddies
which interfere very materially with the
1Ó flow throughthe conduit. The device not
