THE ADVOCATE OF INDUSTRY, AND JOURNAL OF SCIENTIFIC, MECHANICAL AND OTHER IMPROVEMENTS. b#
VOL.
XIII. THE PUBLISHED WEEKLY
NEW YORK, MARCH 20, 1858. GEIB'S IMP:s.OVED FLOUR BOLT.
NO. ,28.
SCIENTIFIC AMERICAN, At
No.
128
O. D. lKUNN, S. H. "VALES, A. E. BEACH.
Fulton stn:.et, (Sun �Buildlng8,) Nell'York, B"t" MUNN &; CO.
Low S the AmeriCl
Booksellers, tho British Agent. receive-Jubscr ptions the Single-copies of the1):'?er are on.salo at the omce of J' : 1 eriodical staree in this city, ':!:t;: e it Slid the �l'CDlainder in l!Iix U16Dths. IY" Seo Prospectus on last page. No Ageuts employed.
advancet
Prlfpls :ar., :":Ut:
all the Sampson. on & Co., 47 Ludgate Hilil London, Eng., are to for ScIENTIFIO AMERIO,'N.
TERMS-Two Dollars per anumD.-Ono Dollar III
Traveling
with seeing spots, like flies, moving before jeots. their eyes, especially in looking at bright ob These spots have been called by "the
Persons in growing old are often troubled
Spots
In
the Eyes.
object,
head suddenly, and fixing the eye upon an
p.rofession"
muuae
voljtantea. After raising the
Dr. Mackenzie, in his elaborate work on the eye, describes these as resembling
the muscae appear to descend gradually.
twisted semi-transparent tubes, partially filled with globules, which sometimes motion, but reaIly have no motion indepen
minute
appear in considers
dent of thll ball of the eye, and the vessels of the retina.
that the globules are blood passing through Many persons frequently notice the mil.scae
he
nervous persons are very often frip;htened at
upon snow on which the sun is shining, aud beholding them, because they are gcncrany
t'olitanles in their eyes, especially in looking
or amourosis. nomenon.
considered a disease, and forerllnner of cataract comfort to many persons regarding this phe From late experiments he
Sir David Brewster gives some
the eyes have no connection with mentioned.
come to the conclusiou that t.he spots seen� by "This valuable resnlt," he
has
" hns been deduced from Il econdite property
tho diseases says,
mllscae
veloped in our day."
of divergent light, which has only been de He also asserts that the eral phenomena present themselves to
t'olitantes are harmless, and their gen
night by looking at a candle through a lens of short focal length. the luminous field is seen covered with twisted When In such
pinhole in a piece of brass or cnrd, and at
he states, by looking
and young.
eyes of evory person he has examined-old
the
They may be seen in daylight,
at the sky through
a
The special
observations
tubes filled with globules in motion. place, they are not t he mmcae
bolt, and 8ll keep the superior portion free it speekled.
meal, good and inferior, in one and the same
to avoid the necessity of
object
of this improved bolt is
rebolting all the
blac'k spots are seen by the eyes, not changing insensible spots in the retina, and are just sources of alarm as symptoms of amourosis. A few years since, we remember of a para person ill
from the substnnces which <lark en it and make
volitantes, but
the newspapers regarding sme
graph which was quoted very extensively in
which the atmosphere is supposed to be com posed, in the form of small transparent glob plate in the bright sunshine.
France, who was enabled to see the atoms of
discharged separately from it.
To the bottom of the chest, A, and underneath rior boltings of D pass throngh h into a proper ferior boltings of the first bolt are fed into the the elevated end of its bolt, C, there are at- receptaole, and the second quality passes' second bolt, certain portions of the boltings of tached two spouts, c d, each having a slide, e, through the spouts, i, into J, and then through which are mixed, and others aro allowed to be nt its top. Spouts, ff', are also attached to K into H again, where it is again carried up tors and conveyers, so arranged� that the in graving, which is a perspective view of the be fully understood by reference to the cn machine, All this will the bottom of the chest below the depressed end of its bolt, and these communicate with the bottom of the elevator, H, lInd a. spout, them to the elevator. dlings" passes through quality the above description it to be rebolted, and the third quality or " mid
of two or moro bolts in connection with elevl
This il done by the employment
2 shows a section through the top of of flour passes down into a proper receptacle in front through the spout, 0, and the second quality of th!l bolts, so as to feed the meal at their cle- through d. Th e inferior qualities pass down YBted epds. At the bottom of eaeh box, A B, through f f into the bottom of H, together there is placed longitudinally a conveyer, I, with the "tailings" of bolt C. T he se inferior they l'e limply shafts, b, having knives or_ qualities are fed into the elevated end of D by pins, a, plnced on them In a spiral direetion. II through-an inclined spout, A". The supe one of tho clevators, which are placed
Fig.
ules, by looking through a pinhole in a metal
period, a person came from some distance to It was a long dark
About that
show its construction.
with parts
of
the sides removed te
receives the "tailings"
of b<flt, C,
proof of this discovery.
our olllce, and exhibited what he consiclered a
end, by looking through which, these globules however, were not the I).toms of ail', but the could be distinctly seen in motion.
paper tube, with a very minute pinhole in its
ends of both may be adjusted higher or lowel', tion by having nuts, E, ing are connected. 80 as to give them a greater or less inclina
considerably larger than
ated in the usual manner.
stands, containing bolts, C D, made and oper
A 'B arc two rectangular boxes on suitable The bolt, D, is
chest, B, and under the elevated end of its bolt, spouts,
To the
and delivers bottom of
g,
D, there are spouts, h, i, i, i, i, and is now the case,
will be seen that the meal is not rebolted in C, and in consequence the fine or fancy flour will not be speckled as through the bolt in rebolting, and the will be from fine bran passing
or
"ship stuff"
j j, and the throughj'j'.
fourth
From
C, and the deprQssed which are on screw
They,
munic&te with a box conveyer,
pressed end of the bolt.
j, j, j' j',
are attached under the de-
J, the lower part of which is connected to the The operation of the machine is as follows: from the stones passes into
containiLlg
The apouts,
a conveyor,
i, com-
tured.
mueh superior to that now manufao
flour
muscae volitantes, as has since been demon strated by Sir David Brewster. The muscat lIre generally invisible in ordinary light j it is only by divergent light, such as that 11' hich diverges from a small aperture, that t hey are witnessed.
rods,
F, to which the lower
over hand pulleys, and placed within trunks or boxes.
vators of the common construction-that is,. lower part of elevator, G, from which it is buckets are placed on endless belts and passed carried into the elevated end of C through an inclined Ipout, A'. by belts in
G H are two sets of ele
ends of
the bear
H, by means of a spout, K.
The meal
the
to' furnish any further information. tained a patent on Jan. .. t., ..
Geib, of Mifflintown, Pa., who will be happy
The inventor of this flour bolt is Da vid
5, 1858.
He ob
the usual way.
Both bolts being rotated
The finest quality
bel' about 1),000,000, in all North America.
I ndian blood
A CAREFUL. estimate of all the persons
indieates that they now num
of
� 1858 SCIENTIFIC AMRICAN, INC.
