The sun. [volume] (New York [N.Y.]) 1833-1916, 1891-08-10
"A NEW POWER.
steam and Heated Air Together Outwork
Eteam-Possibly n Rev olution.

steam and Heated Air Together Outwork
steam-Possibiy n Revelation.
Prom the Lonson 7rmes
y Is well known that the practical efficiency
T I'M, n mechanical work done by q pound Of
version OF heat Into motion-,,is greatly less
than theory tells us Il should be: y has been
form, Ks las found much favor with inven:
Of combined mir and steam appeared TO DO
practical method OF improving the steam
engines sms sns ao%n ano 10 sh
present time tbore has been no record OF COM
tS s HSH2 pfa Is Syns at
the steam engine.
Among others Tho have taken deep p5sS
ward Field E. Who has s BEEN sas We known ior
bosr bsarins bis nams Ills VIM s%s S
vas So,o grtest step in advance In In, ne steam
sseno11 in : ysrS, rsmsTEaSIe desree. And
:, Put ip few plain words. Mr.. Field produces
work In an engine with the use Of only from
70 Be- d the Tho sno S 10
perform 4, the came amouat Of work This vol
uMo OF mixed eaSee consists OF small volume
heated air. Whatever OF invention there is In
the present connection relates to tho epparstps
lions namely. tho experimental. whereby Mr..
covery and The prsctisa. By wiic6 he u Illus
trates the aG,pp,, i OF those nrncip!es in
Ses
.sss !a1 ;SsSss, y s%ss E SsS
bers 81 liilsrsn. CAPACITIES. and working
to prevent condensation or loss OF heat q high
tempsrature Is maintained In each Of the
To soh
81 tho measuring chambers nat, a. a pressure Of
ls wS 70
with a load Of III rounds TO o height, Of ,5s
smaller Of the two chambers was then Laii
ana aes an heeunSl Sestsa
air ct Temperature .n Of 400. Eahrenheit
praetico aud at stnospheric pressure as shown
by tho respective gauges. The. proportions
he u Ss "a q.
the gauges on both chamber instantly showed
q pressure OF 60 pounds per square inch. Upon
to the cylndsr The weighted piston was rapidly
driven up n inches. which was as high US It
ment being repeated tho weighted piston rose
Violent 6ow Humber 81 other
we're made with SINH lar results. and as whole
S sa 10 bs t ss Sa{ 9u vs
Of heated Dir ,dii. Thsy further showed that
The PROPORTIONS which Mr. Field employs s0 Ia
1t should be observed that in practice the air
Is heated ut little or no cost by the waste hent
which IN an ordinary engine escapes into the
Tls s 1 81, h here inyolved have been put
tS Be supersdded TO the sxis, ny ensine WORKS.
each end Of the cylinder Each Of thsss CHAM M
into which Is delivered proportionae charge rye
Of stenSm: The mixture 1s delivered irom each
END he cynder Causing The
Gpon the OCCASION OF our visit ne engine was
And heated nT il about the p5eP
Mnder which This run was made We're
the same as in tho previous run. and the same
ed that the temrsrasHrs IN The e' air ar chamber
should not TO less han 400 deg. Fair. for the
Of H. Fact .hs Of
ture during the engine trials was not higher
than 800 deg. but was generally much lower.
owing to the draughts and to Tho inefficient
construction OF the heating apparatus. On
comparing the results OF the two engine runs
made respectively with pure steam and with
combined steam and heated air. It was found
that there was an absolute gain of A per cont
In favor OF tho Field system Us against ordina-
~ steam.
The system. as we'll as the experimental ap.
three three epeieesrSi namely NJ Collect Homer
Perry +. Nursey. C. t.. each OF whose reports
substantistes this scoQomy and points to still
and efficiently fitted with the neces sary ad-
lmncts for working upon Mr.: Fields principle
This. in fact, Is what is now being done. and In
due course the results will be arrived at and
made known. Should they confirm the results
already attained-and there does not appear
70 be any reason why they should not-Mr
ficll's discovery cannot fail 10 produce o
complete revolution Ia motive power. The
opinion Of this system entertained by Mr.. D. K.
Clark. whose report has already been referred
to. may be, gathered by the following extract
from that document: " 1t means an enormous
commercial success. II properly manipulated,
and under Mr. Fields expe risncsd supervision
il seems quite possible that thia engine will
bring about the same benefit with regard TO
tn. economical use OF steam as Bsssemor's
steel gave to Its own specific industries"
MEYER SAW DIVIDED SKIRT.