New-York daily tribune. [volume] (New-York [N.Y.]) 1842-1866, 1852-07-09
srrRNCE AND THE USEFUL ARTS.


Quarts Cruskiag Maekine.-A new and very
veil contrived machine has been constructed in
Nev.York. by Mr.. John A. Collins, for the pur-
nose OF extracting gold from quartz rocks. On a
round cast iron plate, which forms the bed plate
Of the machine, six or more concal wheels, whose
axes converge toward the center, are made to
travel round and to crush in their way the pieces
Of rock which are put under them. The neceS-
saTy pressure and the motion are given by al VI
genious continuance, which consists OF ah''"o'
circular plate resting on the wheels ana "niea
fixed by keys on the axis, this axis oei"s P"' -
motion by steam engine. Al e,
In the machine which we have seen, AZ NO VI
Duase. street, there are SIX otner "noo'' o'0'
the second plate and third plate over 'heln'
Th;s third nlste is connected with the first by
vertical columns. and held down to the required
,.,su,e NV india. rubber springs, so that il piece
ns,oct l. barder than the others, the wheel rising
owe, Il presses the springs, which give back
stronger counter-pressure, sufficient to crush the
piece at least it prevents any danger Of breaking
the machinery.
BY the above arrangement, there is no friction
in the machine, either by rotary axes by sliding
pieces. There is only rotation of wheesbn plane
surfaces, so that very little power is consumed by
the machine itself. There are necessary coRtri-
vances TO make a current of water pass over the
powdered rock. Three or more superposed sets OF
wheels could be used instead Of two, If 1t was
necessary.
Plowing by Steam.-A rotary steam
pillow has been invented by James Usher, Edn-
burgh. II is much ike a locomotive, with hon-
zontal shaft in front, on which are fixed arms
forming mold-boards and coulters. There are
three arms in the circumference, and on the length
Of the shaft five, which enable it to cut five fur
rows at the same time. This Plow weighs hVe
tuns, is ten horsepower, and costs ,411' IL
moves at the velocity Of $50 yards per hour and
REQUIRES an engineer and two men to tend it. 1t
blows six acres in day. When the blowing APP
paratus is disconnected, the machine may be used
for any other purpose as a steam engine.
Lord Willoughby Scoresby'has also made ex-
perments in steam-plowing. lie employs two
steam engines at the same time, one at each ex-
tremity of the field. The plow plays between
them, forward and backward by means Of ropes
attached and rolled around capstans, with which
the machines are provided. Two men are en-
ployed to drive the engines, four to shift the pow
and engines, one to hold the pillow, and three boys
at trucks. To pillow an acre requires cwt. Of
coke, making the cost to be shillngs, which is
half the price of doing the work by horses, with
the advantage that steam does it in half the time.
Electric TeiegraphS on RGitroads.-Mr.
ORielly has issued circular calling the attention
of the public and Of railway managers to the neces-
city ofputtng up lines Of telegraph along railroads,
with instruments at each station, so that before
leaving station the conductor of a train may as
certain whether the track is clear, and give infor
nation that he is uponit. BY this means acct
dents involving the loss of life may be avoided and
the destruction ofproperty saved to an extent far
exceeding the cost Of erecting and operating the
wires.
Submarine Telegraph between England
and freiond.-As has already been stated in The
Tribune, the laying of the wire across st. Georges
Channel was performed on the LIST of June. The
rope was rather less than one inch in diameter,
and was composed of central copper wire in
closed in double gutta-percha tube, and sur
rounded by twelve galvanized iron wires. The
breadth of the Channel being only fifty miles,
eighty miles of line were put on board to prevent
repetition of the accident which happened between
Dover and Calais. At the end Of ten miles it was
determined to compare the distance run over with
the length of the line run out and it was found
that only twelve miles of it had been expended
The next comparison showed 90 miles of line to
l6 miles distance the next, 81 to %; the next
SIS to AZ finally, for the 50 miles DISTANCE only 6j
miles of line were expended. During the opera
ton the vessels moved at the rate of four miles an
hour. The greatest depth passed over was 81
fathoms.
Groicing Trees from Cuttings.-A
French gentleman, named Deacroi1, has discov-
cred new mode of propagating trees from cut
tings, which has proved successful for apples
pears plums, apricots, &C., as well as for roses
and other plants that tenacious of life. This
method is to bend the cutting in the form of
bow and to put it in the ground at the two ex-
tremties. leaving only the middle part exposed
and on level with the surface of the ground.
There must at that point be good bud or shoot.
AL other parts being protected by the earth from
drying, give vigor to the bud, which soon trans
formed into leaves, by which in its turn it draws
from the atmosphere the carbon necessary to the
formation Of the roots. The method Of planting is
to form two ridges, and placing the cuttings
the fnnrow between, cover the ends with eaith,
press it upon them, and water freely. The cut
tings should be Of last years growth.
Steamboats, With0ut Chmneys.-Eight
steamboats, are building to run on the river Thames
They are to be fitted up in American style to
draw only eighteen inches of water, and the smoke
is to be carried by blower under the paddle.
wheels.
Small. por IN Bank Notes. DR.. c. II.
Buckler Of Baltimore says: 1.-THE inmate OF
smallpox hospital generally keeps what little
money he may chance to have about his person.