New-York daily tribune. [volume] (New-York [N.Y.]) 1842-1866, 1855-01-24
NEW INVENTIONS.

PoFrERs SPRIsG-HAMnER STONE DRESSING M
cBrsE-Tbir machine is based on the principle VI hs
maIet and cbi..l ordinarily used by hand in The
act Of stone dressing. II consists Of adjusabl,
frame, in which is arranged a tool-holder and seha
of hammers, disposed at an angle Of about forty6w
degrees, the angle being increased or diminished "
cordDg 10 the hardness of the stone 10 be worked
The hammers run on wheels. and are each one 6ot Ia
width being lifted by means Of cams attached to
con mon shaft and thrown down in rapid succsssios
by the action ofsprings against the tool holder which
il adjusted as TO firmly retain the cutters In tN
required position constantly resting upon the saracs
OF the stone which is placed carriage that mova
contiI uousy at the rate Of from twenty-five to fnJ
inches per minute, according to the hardness Of ua
stone, carrying the cutters back as the ham
mers Lifted after each successive blow, each han
mer giving about four hundred blows per mlsatA
The number Of hammers varies in each machine,
according TO the width Of the cutting surface, vh
from two feet to six feet wide. Tho tools used IN
very similar in form to those used by hand, and hA
machine cuts plane surfaces and all kinds Of moldin1
and columns with great rapidty and precision TN
tool holder IL furnished with leather or in iiarbba
cushions restng upon the heads Of the cutters, VI
motions Of which regulated by means OF srex-
bar in such to enable the operator to give
asy desired intensity TO each blow necessary to ~
cure the mort delicate execution. This machine
exceedingly simple, compact and durable, requiring
but little power to keep it in full action, easily ks
in order, and requires but three men to attendt
while performing the labor Of from rs to 400 ssfk
men. II is estimated by the inventor that the go
raj introduction Of this machine into our stone-ygA
would reduce the cost Of dressed stone Of all kis&
about 30 per cent. below present rates The mschns
may be eeen in operation at No. IS Gsnseyoortst-
North River, together with the various specinena
marble and brown. stone work. More than fly pst
ents have been granted for machines and improve
Dents in stone dressing machinery, nearly si
which have, on trial, been found 10 be defective
the rotary cutters in W sons patent coming neafesS
the conditions quTed for complete here.or~
Porters machine 10 entirely novel in It's incepo@'
and combines the required philosophical condiiOs
with & reat practical simplicity and aptitude for ~
purposes for which it Is d. signed.
WARsERs FoUsDERY APPARATUs.-This sinph
ard effective sppsrstus designed to facilitate the ~
of moldng. especially in those castings which reQan
to be Indefinitely reproduced, seems TO Posss
qualities which entte it to special and fsvnsss
mention among the valuable improvements - labor
ssyiDg machinery. Hitherto but very little saeees
has attended the inventor, who may have soass~
introduce new combinations Of machinery 70 sop1'
sede the slow and tedious processes Of band moi".'
Warmers apparatus consists Of q number Of
chemical conirivances, which, taken Together 49,
up the sum Of a very important and usefai Ia'eaS
The fret contrivance il for preparing the ssoa Pe
pAratory TO placing /. in the flask. The sec'oa ~
sisis of frame and leyer-press sTrsnse"'n' =.
forcing the pattern, with an equal pressurs' Over
eutbe nodded ,urfsce into the sand in the n''A,
moving the same sihou disturbing nc "'~