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# Title: Lexicon Technicum: Or, An Universal English Dictionary Of Arts And Sciences (shelfmarks Leibn. Marg. 71; ZEN Leibn. Marg. 71)
# Folio - , page id 806933011:0044
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in che Baromerer would FaIl an Inch. Bur since) Aoppd wich a Cork, harins a Perins txed co ii
ehe Fixpantion of Rir increales as che weishe oF chac ic mighe be dravn ouc ac che uxper Orisice
che Incumbent Armosphere decreales, or a5 the
of the Receirer, and chenthe Cla(S Neck OF CHE
Nercury sintes in che Baromerer; che upper Parrs Recoirer beins ell warmed, and chrust into ihe
ot che Air must be much more raretied than che
lorver, and consequently che Heighe of che Armo-
Sehere much prearer chan 5 Miles.
AIR POME. An Instrumene eo exhaust the
RIT OHE OF PrOPeE VesselS. NIT. Boyle OWnS hC
Cement, ic Ailled the Incerstices berwixe the Lin
Plare and che Receirer, 25 al(o Betveen che In.
cernal Superticies of the Receiver and the Chante
ot the Cock.
The lover pare is the suctine. Pump Or Air-
had ehe first hint oE ic From Schorrus, Wvho Pump, supPOEECd Dy a Frame ot Woud, wirtu
had publisted co ehe Worid, (buc ME. Boyle
had nor leen the BOOH) chac onc Orro Gerick,
Threc LCg5 (TIT) l0 contrived; for the freer mori-
on ot the Hland, chat one side oF ir may Rand per-
Consul os Mazdebureh, had Found out a ay oF pendicular; acrols che midse ofthe Frame is nail-
eracuatine OTa(S V essels, by luckins our the air
Ac che Mouch oF che Vessel, D unsed under Wa-
Ter. Bac ehis Firxine Was detective in EWO re-
ed 2 Board, (222) 10 wtich ehe Pump is fastned.
The Pump is made up OF FOUT PAFES; viZ. RN
exact and srons Clinder oF Bra(S OF abOuE 14
sPectS: T. Thac in order ro eracuare the Vesses, Inches in lenech, wich a Cariey ot abour 3 Tuches
here Was required che continual labour ot cvo diamerer; to which is ficced a Sucker made un oE
Arons Ilen For EvOFTOUTS. 2. The Recciver and EvO ParES; che one (44) Comenhac lels in Ldia-
Eingine beins aIlot one piece, chere vas no az meter chan ehie Carier ot che Cytinder; on which
co sec chinss in and our of ic, in order 10 ery 2-
a thick piece ot cannd L eacher iS nailed, Wbere-
ny Experimenes uxon chem. Po remedy which, by ic closes (o exactiy co che Cylinder, chac chc
and eo supply chose Imperfections Which MIV. Boyle
had heard che Orto Gerick Ensine laboured un-
der, he directed onc Mr. G. and DF. FTock EO COn
Rir cannot insinnate ic PelF berween them: THC
orher pare beins a chick and narroW Plate OF I.
ron (55) is firmly jorned ro the midale of chc
erire a never and becrer sir-Pump; wrhich Dr. Former Parr (14); ie is lomentiac longer rhan
Fook effected in che follomins torm, wrhich L will che Cylinder; one Edse ol ic beins smoorh, bue
deseribe because ir as the first ofrhe kind made che ocher indented (as in che Figure) wich a rov
here.
Ot Tccth; to che Incerctices of wrtrich arc herec
Ihis Sir-Pump consists OF ENO ParES; a Gla(S- ehe Tecch oF a (maiI Tron Nutr (P B) which is
Vessel, and a Pump ro deaW the Air out oF it.
Fastned by rvo Scaples (22) 10 the under side oE
The Classis express d by che Fig. T. Ahavins che crols BOard (222) on wtich che Cylinder
rests, and is curned co and fro by che Manubri-
um or Flandle (7)
The last pare oF the Pump is the Valve (R)
concain aedur 601b. Ot Wacer.  Cautelet beins a Fole ac che Fop of che Cxlinder, a lirrle
caper romards rhe Caviey; to chistsole is tered a
BraIS PeDG, 10 bC pur in or FaKen ONF upOn OC
Calion.
Flavins chus described che Fingine, ic Will Be
requisire tor the berrer exclusion ot che ourmard
(D B) cessoles a Brazen Rins, Which 1s1o coret, Rir, and che more casie morins ot che Sucher,
Scop- cock and KECY S, 25 allo the Valve, ChaE
ot chis Ring is sirred a Brals Scopple (FG) (0) lomerimes Oyl and Water rogerher prove more
exact 45 to prevene any considerab. e accels ot effectual: AIsO char the Ingrels ot che Air Berwixt
che Brass Cover and cheRing may be likewile pre-
a Fice (FYT) oE abour half an Inch Biamerer, renced, the Fdlges oF boch mult iththe former
encompals d Wich a Rins or Socket ot Brals, 10 Cemene be caretusly plaistered, and spread on
a FTole ac esle L’op with a Corel hicced to ic, and
aI(O a Scop. Cock Fastened ro the extremity oF is
Neck belobs o Cares Bet sate enough 10
(BO) O che Hole ac the Lop OL LK reset (A)
is abont Hur lnches, the Orine eisci
compasied wich a Lix ot abouc an Inch in heishe,
ohole use is for the Corer ro rest on; wtrich
Corer l delcribed in ihe second bisure, nere
and ro De clolely cemented on the Lip (BC) ol
ehe ArleFigure. Toche incernal caperins Criticecher. Mould be ivell oyled rith Sallad Oyl; bui
RXCCEMat Air: In ehe midst ofchis Cover elelS)
ertrich is likevise Acred a Scoppe (R) of ches wich a hor Tron, chac ic may run che becter and
Tame Metal, (0 exquisicely ad apced EO IL, FhaE iLAIII che licele Caviries.
mas be curned round ichoue admirrins in the
Lninasbelns cnus fcced, andcne loWe an
(IaII brazen LLins (L) sixed ro che borrom ofs ocher ar, the sucker is dravit donn ov
more irharis concained in che exhrausted Vesle,
Wwichoue unstoppins ic. Thac che Scop. cock (8)
che Neck and lorver Oritice ol the Receiver, and ed 10 25 ro aftord a palsage berwixe che Recciver
Lin (MI, Y, V, WV) was loder d on ro che Stans, Leceiver will delcend into rhe Cylinder, and b,
ot che Cock (X), ot lensch enoush co corer che cumins back che KEer, chac may be prevencels
Neck ot che Receiver, and cemented on with trom Ayins back into che Receirer, and may allo
Eltch, Rocin and Wood. ashes vell incorporared by openins che Valve, and windins ux che Suck-
cogether and poured hoc inro che Caviry oE rhe er be forced inro che open dir; and s0 by lelle-
che Scopple (F6); cheule ot wirich Srring is to com; by which means ite LI I CrVeH Ode de
esse Csicet, alsel à succeon o inout bet
ins prerented, che Cadits os ine Cylinder must
least Air, and yer may be pur in or ralen our ac (O) oFche Scop cock beins pur into che upper O
pleature: Throuph che lomer end ol ic, chere is a ritice ot che Cylinder, chen che Ilandle being
liccle Hole (8) made For che passase ot a Srrins, curned rill the Sucker riles ro che rop ot ic, and
(8, 9, 10) which is likemise co pas chroush a Mucrins che Valve wich che Plue, and turnine che
(in che Arlt Fisure) mishe be berrer tastened i empried of Air; then il the Turn. cock be Turn-
more exactly exclude che dir, a chin Plare otate Lset, PaIOI CHC AM COMAIHCA MM CBE
elace; and co prevene che Cemene trom runnins raced exsuctions of che Rir our ot the Receiver
ino che Ocilice (k) ot che dhante (X) ic Was and Expullions oE ic aBain out ol che C plinder, il
na