B:

Pneumatics,

'"'o's^ e ^ e V tumbles into its cavity, ana rans ocmiiaJ'i,! Endsrr, of two fender Springs, which like[ sS ®*nds detain it. The Key in this Position is,. t ^ e Figure. Then opening the Hammer againiet * s brought into its proper Place near the dif-* ^ a F’ c , and the Bore of the Key makes again

y >of that of the Shooting Barrel.

^is j 1 evidently appears how expeditious a Methodl be p of charging and discharging a Gun; and wenst°Mer Ce condensed Air as great as that of Gun-ytid 0 ^’ Gch an Air-Gun would actually answer thernan y Guns, and prove the best Defence againstj^lis e ^tnen or Robbers that People are aware of; be-dgBt (-y n f bey have Reason to suspect them, they

run, an

19 *

^ arr els, i n which the Pistons c c, c c, move^ Chains fasten’d to each of them, and

to

by .

W hi « Means, of Course, the Pin P^> is pufh’d up,dis >0 stands upon it, and thus opens the Valve V, andIr. aro-po *t,„ u>..n„p This is all evident from a bare

bring in another Bullet to succeed I instanta-

i>v, *y> there is a Part called the Hammer H, Whicha sti -

Yjl* iar § es the Bullet.

** of the Cut,

the jPDare Hole goes on upon the fame square End ofof the Cock, and turns it about so as to place^ In dric Bore of the Key I K in any Situation re-st^ • Thus when the Bullet is in the Gun, thethe ly r fends as in the Figure, where the Bore ofMi e ^" e y coincides with that of the Barrel K K ; buth 0u st*e Ball is discharged, the Hammer H is instantlyHot; *■ ^own to shut the Pan of the Gun, by which>i the Bore of the Key is turned into the Situationas to coincide now with the Orifice of the Ma-ant ^ upon lifting the Gun upright, the Ball

Plate

XXX.

Fig. 3,4.

a Cq etl ma ke five or six Discharges before the Thiefl0 Within Pistol-shot.

td in all other Cases where

the Air-Gun,

it 1S s e< l u ired to be condensed to a very great De-%e 5 , W G be requisite to have the Syringe of a smalln °t exceeding i- an Inch in Diameter; be-I cause,