New-York daily tribune. [volume] (New-York [N.Y.]) 1842-1866, 1855-02-12


ANEW ExcAyArIya AND DREDGING MAcHISr.-
year ago or more we described q new Excsvatsr
invented By Mr. Tsggart Of Roxbury, which, - II sp-
reared in the model, seemed 10 promise very valus-
bIe results. The invention has now been perfected
and patented, and working machines have been con-
structed and thoroughly tested. correspondenthas
furnished us with the following account OF trial 70
Gently made of one OF the machines:
Through The politepess Of Of the proprietors,
had the pleasure Of Witnessing Of RoxbarX On the
ipg end Dredging Machine, recently invented By
John Tsggart Of that city, and, A. ! am informed,
patented in the United States aud several forsagu
countries. ,, ,n.,..
VA. exceedingly stormy, end the driving snow, By
Accomplishing in the unprotected gearing, q times
percsptby impaired that uniformity, ease, and grace
u motion, said by many present to have been Wit
messed at former but more pryste trials.
lowing TO the ipclemepcy OF the weather. me COM
papy of spectators present was comparatively snan,
which deficiency, however, va: ahundAntly supplied
in and % OF . sS e
the most important persons observed wa deAegs-
tiou. o. was informed, from the Eoginesring and
Surveying Corps Of Boston harbor several capitalists
and dis.isg uished machinss Of Roxbury and liz
neiehboripe cities, together with the inventor and
several propretOrs OF the machine. The meonankm
Of the machine is extremely simple and consists Of
two opposing scoops with their adjacent lever and
vertical vibi stipg BOONE massive prclsessg crane,
sustaining the executive parts and In It, tarn sup.
ported BY secondary platform which sustains the
machinery, steam-boisr, engine, &C., and fsvoives
upon stAtionAr{ platform, which rsss. SsSn ,sus
OF wrought iron, and are msssivs and espscious:
They weigh nearly four tuns, and remove, wnee Mica
TO their utmost capacity about ninety cubie hee or
four. and ahalf tuns Of earth q each application:
They ere compelled to pssstrste BY te force Of
gravity. lsded however, when necessary, y he On.
tire weight Of the machine and TO gresp ~ powsr
spplied over Q doublerun Of puiisys; ccnssqsnsy
they are scarcely 70 Be resisted by sny 0ssssy ''
not elected for exhibition was hat On vheh
N. machine wss built This land 10 low and messny,
and when free from frost o6os little reslstaaee q ne
STsiDsIy Tp,s% oSssvsd % Be- cssa more
Tot IN d,pth. and 70 be wholly impsnsRsese - piek
Ard iron bar, whom applied By the arn o. euong
b, e ssT os sssP q .ssr PS sSsea Ss
.Ssm ,eiznS slsysdng and discharxug u snesnoas
load with incredible ease and rspidity.
ine this time channel ditch or canal vs. GU sssgs
Is froztn earth about thirty feet In Length ~ -
In breadth. and from eight TO YEN iees ~,
he esrth removed thersfrom dsposhd, ~ Peuas
revolution of the mschme q P"n'
mese n 1. oSyous from the dimensions Of lii chen.
peI ditch or canal that the amount OF earn scDcveo
;neIn.ienced attendants, must have msasus9 up-
ward Of twelve hundred cubic feet and - seea esnss
foo, Of that material il found BY sctad e1Ra -
weigh hundred and four pound. Y sv,S sss - =
weight on the lowest Pc:s,Si: Of s. "a - a.
eeston mentioned, and other gsntlsnssn psSsScsSw-
clsyed themseiyes fully convinced OF ~ - ~
~ and usdoubtsd Utility e l = e. a1s:or "a
Offering their eong,st s.saros dem Ass 1.
Piie.et,s 3. 80 ".sv - oves-sdimese ~ vess 80
s% 1s:s. sss !. si.'s sss >. =
for removing oUs snS western fvsrs, snA ~ e.se.-
southsIna EsrSer, Ge., q our large eon.s.aa &c
es,-took theu @s''' "As EYE WffHIss."1
mated i
IT,. o,t on ! psn Of the Western Divkiss q e