447

^NODOM.]

.AND SURGICAL INSTRUMENTS.

North, North Central, and South Central G alleries.

PI tlle liquid by an overshot wheel, and working in com-ssed air without cock or valve,ad' a * eilt water and spirit meter, self-acting, capable of^Justment under varying pressure. Patent spirit-meter,Rowing at the same time the quantity measured and itsij e y value, in order to obviate mistake or fraud,y, Je novelty of the power-engine consists in its being ahei eivnieter and a water-pressure engine, and also in itsPart a PP^ ca hle to steam power without alteration of its• It is represented in fig. 1.

Pp , le machine consists of an outer case or cistern, con-pi nin g two collapsible measuring-vessels, connected bylow ° r tu ' Jes to a four-way tap or slide-valve at thea , er part, and at the upper part they are connected byPa 6ain working on a centre, one end of which centre; n ?? es through the outer case, and gives motion to theq gating chain of wheels, and also to a beam andadrvV nt corlnecte< l with driving gear. The liquid is(l 1 . r '" t te<l through the upper part of the case, and with-at the lower part, after having passed through the !tq^Psible measuring vessel. Attached to the four-way j'Ha ■ >1 ' va ^ ve Is ail arrangement of rods or chains connect- ]g it with a tube containing a weight, or a weight other- jfall so that, as the measuring vessels rise and

re ’ tap or valve is acted upon and the motion is

tjj erse< I, the liquid is allowed to rise in the case until>h . treasuring vessels are immersed, and as the pipe byMth ^ liquid is conveyed to the case is not connectedjp a the four-way tap or valve, the liquid flow's freelyStl . all times, according to the pressure, thus the mea-vessels, having the same pressure without asr? ln ! are not exposed to undue strain,the n tur mng the tap to withdraw the liquid and startw a ttachine, the measuring vessels to which the four-°the tap or valve I s open, will descend and empty thefillin' "assuring vessels, at the same time rising andact; ° vintil a certain point is attained, when, by thev a j n .°f the weights and rods, the action of the tap oral So e ls reversed, and consequently that of the vesselsliq ! , ail< l thus motion will continue as long as there isit, £ 1° pass through, or until the tap is turned to stopr ack * * e m °tl° n is converted into a circular one by the.j, a ud pinion represented in fig. 2.

°Pe £V atent meter (fig- 3 )> ™ construction, resembles the !th e -U. ore described, but has no external apparatus except ji n la mcator. There is no loss of power in the liquid pass-ad? through the meter to a high level. It is perfect in jpotent under varying pressures, and consists of two jatta l 6rs ’ containing a float in each; to these floats ai-eWiti? he fi a r °d having a projecting pin at the upper part, 1A moveable beam is fixed over

Wim "" =u a r °d havinga pointer attached.

;i tl p . pointer attacnea. A moveame oeam is nxea over jtpph Pet ween the cylinder, having rods and chains at-t'D'n'ft t0 W01 'fi tl |e indicating chain of wheels, and toth e p v fi° ur "Way tap at the lower part of, and betweenwaders. On the top of the cylinders are placedair a ap J e ^ et °fi es an( l chambers, to allow of the escape ofthey a tae cylinders are being filled, and to admit air asthere - Te fi e ? n g emptied. Also on the top of each cylindera slot 1 * a ? ’ n filcator, graduated to small quantities, havingWith tb* 1<: (fi 1 ’ 011 ?! 1 which passes the pin of the float-rodfloat (1 6 P°' nter > indicating the quantity drawn off as the''fluid ri. Ceil '' s ‘ R°th cylinders having been filled with'fie rod l - 0ne " oa * ' s I° ¥n by the P' n at the end ofthe oth ’ a under the ketch on the top of the cylinder;Positi 0 p r fi°at' s U P an fi has forced the beam to an inclinedthe tap^ rising as the cylinder filled. On turningitig in't withdraw the liquid, the float descends, show-fluantitvi escent ’ fiy Ifi e poiuter on the scale, the exact°f the r j rawn °ff> until, in its descent, the pin at the topPassing h < ? 0Dles u P on I* 16 ketch, forcing it back andattachlq / lt; ’ but ' u forcing it back, as the ketch isr od, the fl t ' le ot fi er ketch on the opposite cylinder by athi- 0u , j 01 at. held down is now released, and risingIhe f 0ur t “ e liquid, reverses the beam, thereby turningPass e( j -^ay tap, and indicating one measure of liquidL 1*1(1 dpy, ^ lc e mpty cylinder is now filled, the float being°u as j 0 n as before, and so the motion and indicating go' ar ned to | t aS ^ ere ’ s liquid to flow, or until the tap is

Fig. 2.

o

'

Brown’s Patent Power-engine.

The power obtained will, of course, depend upon theamount of pressure applied by either steam or water thatmay be the prime mover.

Fig. 3.

Brown’s Patent Meter.