1000000030

H Y D R

S T A T

SIr

Iheteelh

four raeks, which

h.og

by 111'0 ehaios

o\'er

Ihe pullies

Q..

and L; and

l!te lower ends of lhefe

racl~s

Ihere are fuu r iron rods fixed, which [,0 down 11110

rhe fou r foreing pumps, S, R, M, and N. Ancl, as lhe

wheel, turo, Ihe racks and pump.rods are alternJl(ly

mo.ed

up and down.

Thus, fuppore lhe whecl G has pullcd down the rack

aod drawo up lHe rack K by Ihe ehain: as lhe 1?f1

loolh of

jullleaves Ihe upperOloll loolh o( 1, lhe fidl

toolh ofH is ready 10 lakeimo lhe 10\\ ermofi loalh of 1he

t3ck

and pull il dowo as fu as lhe lcelh So; ard lhen

the raek

is pulled

upw~rd

through lhe uhole fpace of

its lec:h, and the wheel G is ready to lake hold of il,

aod pull it dowo acaio , and fo draw up lhe olher _ _

In lhe fame manntr, Ihe ..hee!s

aod

work Ihe racks

aod

There fou r wheels are 6xed on lhe 1.xlé of lhe sre3t

"" heel io fuch a maooer, with refpeél 10 rhe poGlions 0'1'

their teeth, that whilll thry continue lurlliog rouod. Iher..

is oer.r one inOant of lime in whjeh one or olher of th:

pump rods is nor goiog dowo aod forcing Ihe water. So

Ihal, in lhis engine, lhere is no oecaúon for ha,'ing a

p,eoe,.1air·vclfel to a!1 the pumps, 10 procure a coollaot

IIream of waler flowing from Ihe upper eod of Ihe main

pipe.

Fromeach

lhef~

rumps, nCa! lhe lowefi eod, in

the waler, lhele goes off a pipe,

'I.th

a valve

its

fanhellendfram Ihe pump; aod lhefe

er.ds

of Ihe pipesall

enter ooe c1ófe bcx, inlo ,.hich lhe)' Jeliver Ihe

.al~r:

and iota this box, lhe lower eod of Ihe

m.in

eonduél pipe

il fixe.i. So lh?t, a, lhe watcr is (orced or

pllnl~d

iOlo

Ihe box, il is alfo pulhed up Ihe maio rore 10 lhe beight

Ihat it i6 iOlended 10 oe ratred,

is come down10 Ihe poúlionof

will be in the poú–

tion 01" ,'.

T I,emore pcrrendicululy Ihe piflon rods move upaod

do\\o in Ihe pumps, Ihe freer and bwer will Iheir firokes

be: bUI a IlI tle J,,'ialion

(,001

¡he perpendicular wil!

nOI be maleri.1 Thelefore, wheo Ihe pump·rods

E, and

go down imo a deep \Vd l, Ihey may be moved

Ji" l1l)' by Ihe cranks, as is done in a \"ery good borfe·

eng:ne or lhis (on al lhe 1?le Sir

J~mes

Creed's at Green·

wch, ",hieh rorces up waler about 64 (eel froma weJl

IInder grcund,

a reCen ior 00 Ihe 10p of his houre,

HU! wheo lhe eranks are ooly at a fmal! height above Ihe

pumps, lhe pillons mufi be moved byvibraling levm,

:I!

in Ihe ..bove engine al Hlenheim: ancl the longer Ihe

!e–

"ers are, Ibe oearer will lhe Ilrokes be ta

perpendicu-

1" .

Lel us (uppofe, that in fuch an engioe as Sir James

Creed's , lhe greal whee! is Iwelve (eel diaOleter, Ihetrun–

die (aur

(ceI ,

and Ihe radius or lenglh af each craok

olOe

inches, working a pillon ioilSpomp Let Ihere

time

pumps io all, and Ibe bore of each pump be (oor inches

diameter. T hen, if lhe greal whee! has time limes as

many cogs as lhe lronJle has ndl'eS, lhe trundle aod

eraoks will So time limes round for eaeh revolulion

oí

Ihe hor(ts and wheel, aod Ihe Ihree cranks will make

oine IIrokes o( Ihe pumps in tlnl time, each firoke being

18 ioches (or double lhe lenglh or thecraok) io a four.

inch bore.

Le!

Ihe

d:~.meler

of lhe horfe' walk be 18

feet, and

Ih~

perper.dicular heighl 10 whieh Ihe water

i.t

raiftd abore lhe fu rface or Ihe \Vell be 64 feet.

If lhe ho,fcs go at

l~e

r2te of IWO miles2n hour (which

:s ver)' moderaJe walking) lhey will turo lhe great whcel

18i

lime; louod in anhour.

10 eaeh mn of rhe wh:cJ Ihe piflons

m~ke

nioe

firoke~

in Ihe pumps, which amouot 10 1683 in an hour.

pU/IIp'(lI

uin(

l. go

h.r¡u.

E I I1 k'

ro: r21,es a co,umn o waler 1

ioehes long,

WII ER~

a fireamor fa ll of water caonot be had, and aDd fou r

illcr.es

Ihick, in Ihe

pC!ll~

barreis; whieh eo–

gcndemen

\V~nt.

ro have water rai(ed, and brollghl lO

lumn,

IIp01l

Ihe d.fetnl cf Ihe pilion, is forocd iOlo the

Ihrir houres from a ri"ulet or fpring; tltis may bnffcr. majn pip:. whofe rerpeod:c\:I. r ahiluJe abovc Ihe forfaee

red by a horre eogine, working time (oreing.puntpS ",hich o: tl:e well is

fcel.

fI~nd

io a refervoir fillcd by Ihe (pring or ri,'uler : Ihe

01\',

ú~e~

col~I::n

w~.ler

ioehe, long. aod four

pi~ons

being moved up aod down io the pumps by meaos inchts Ihitk , eo,mins 226.18 nlbic indles, lhis oumber

of a triple craok ABC, which, as il is rurned round by l11ultiplied by

16S3

(Ihe

11r~~e,

in an

h~ur)

giv(l

;30661

rhe Iruodle

(Plale 100. úg.

6.)

raires aod depreflcs (or lhe

~'Imber ofcul,icin.~hcsof\\'alerraiftdinanhou r,

Ihe rods

if the whecl has Ihree limes as many

g~lIon,

in lI'ine·meafllrc. eomains '3 1cuhic ioche!,

cogs as the Iruodle has f1am or rounds, Ihe trundle ao I b)' \\'hieh

c!il':d lB0661,

and il quoles 1468 in

ro~nd'

craoks will make lime revt,lutioos for every ooc of l!le ntlm'ltrS, fur Ihe rUl11b'r of

~Jl!unl

raiftd in an hour'

wheel : and

eaeh crank ",ill feleh a firoke in lhe lime ' WI::c!I, ¿ivir:ul hy

63,

giv:s 26}

hoglh~¡ds

--Ir

Ih~

il goes rouod, Ihe Ihree cranks will make oioc

nrol¡~s f~r

Itorf,!

g~ fJ¡¡~r,

Ire

qu~nlil y

r21(ed will be fo

m~ch

Ihe

e.rry tIIrn of lhegrea whcel.

g"'~lcr.

The mnks fllOuld be made of can iroo,

bee~u(e

lh'l

In Ihi,

cakl',~ali~n

il is

(~pro(cd

Ihal no

W~ter

is IVa(l.

",i:: nOl bcod

and Ihey Ihould eaeh make an angle

Ihe

cn~ine.

Bal as no (oTcine m¡;ine ean be lilp,

120 wilh uOlh of Ihe olhm, as at n,

which is

(a l

r"frd 10 le,lt h-fs lhan

f,f,h pan of Ihe caleul:md qu"n–

il \Vere) a view of Iheir r2dii, in looking endwife al lhe my of \\arer, Lmoeen Ihe p.noos

~nd

bmels, antl

ax!s: aod Ihen there

will

alw.ys

one or olher of Ihtm II·c I:pcn:ng .lId fnlltrinJ of Iho valves, Ihe horfes ought

gOlngdOIVnward, whieh will pulh Ihe w3!Cr forwa rd wilh 10 I'.'llk altr,oll 2} milc!

prr

hOllr IQ(mh

Ihis lofs ,

a eominued II ream inlO Ihe main pipe , Fur, whm

<o!t:0l3

aler four ioches Ihiek, 3n.! 64 fcet

a~moíl

al ils lowefi fituation, antl is lherefore jufi begio.

hi~h,

wci;:hs

9,'0

pounds averdl'po;fc. or

4 ~4

pOllnd s

~,ng

10 lofe ilS atlion upon Ihe pillon whirh il moves,

tro~

a~d

Ihl! WCIAhl, tugelher w;lh lhe (riélion of lhe

II bcginoing to move dov,nward, whieh IVill by il! pillon c0r.¡ne,

rhe

r~Gllancc

Ihat mur. b·: OVCleOIl1C I>y Ihe

coolinuc Ibe

rrop~lIing

force upoo Ihe warer : and wbeo

reo Clh of

Ih~

bnrfcs.

The