Nut-Cracking Machine. Page: 3 of 5
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UNITED STATES PATENT OFFICEo
RUDOLPH C. KOERBER, OF AUSTIN, TEXAS.
NUT-CRACKING MACHINE.
SPErCIFICATION forming part of Letters Patent No. 353,143, dated November 23,1886.
Application filed Mgay 13, 1886. Serial No. 202,077. (No model.)To all whoni it nbay conCerln:
Be it known that I, RUDOLPH C. KOERBER,
a citizen of the United States, residing at Aus-
tin, in the county of Travis and State of Texas,
5 have invented new and useful Improvements
- in Nut-Cracking Machines, of which the fol-
lowing is a specification.
This invention has for its object to provide
a novel machine for rapidly cracking nuts, to
to split the shells thereof from end to end, and
also transversely, if desired.
The object of my invention is accomplished
by the construction and combination of devices
hereinafter described and claimed, reference
15 being made to the accompanying drawings, in
which-
Figure 1 represents a horizontal section in
the plane x x, Fig. 2, of a nut-cracking ma-
chine embodying my invention. Fig. 2 is a
20 vertical section of the same in the plane x' x',
Fig. 1. Fig. 3 is a similar section in the plane
y y, Fig. 1. Figs. 4 and 5 are side elevations
of the piercers and piercer-carriers detached.
Fig. 6 is a similar view of a modification of
25 such piercers.
Similar letters indicate corresponding parts.
In the drawings, the letters A A' designate,
respectively, the body and cover of a casing
which contains the working parts of the ma-
30 chine and supports the driving and feeding
attachments. In this casing are arranged a
radial series of carriers, B, to which are se-
cured the shell-piercers C, and said carriers
are guided at one end in suitable ways formed
35 in a hub, D,while at their other ends they are
guided in ways formed in a concentric guide-
ring, D', so that the carriers can move only in
the direction of their lengths.
The shell-piercers C in this example are
40 formed integral with the carriers, and as shown
in the drawings, Figs. 1, 2, 4, and 5, have a
cutting contour corresponding to the shape of
the nut, so that they will penetrate the shell
lengthwise from one end to the other. To
45 sever the shell transversely,each alternate car-
rier is provided with additional shell-piercers,
C',that are placed at right angles to the piercers
C, and centrally between the ends thereof, so
as to penetrate the shell of the nut approxi-
50 mately at its greatest diameter.
To impart a motion to all of the radialpiercer-carriers in a direction toward their
common center, I make use of a cam-ring, E,
which carries a number of cams, E', (one for
each piercer-carrier,) that engage with the 55
ends of the piercer-carriers when said ring is
rotated. A rotary motion can be imparted to
this cam-ring in any suitable manner; but as
shown in the drawings I provide the same
with a pendent circular rack, F, which is re- 60o
ceived in a circular recess, f, in the body of
the casing, and is engaged by a bevel-gear, G,
that is mounted upon a shaft, -I, having bear-
ings in the casing. A pulley, h, upon this
shaft can be connected to a pulley on a coun- 65
ter-shaft by a belt when the machine is to be
operated by power, and a post, h', on the end
of the shaft affording hold for a crank gives
means to operate the machine by hand.
As the cam-ring moves in the direction of 70
arrow 1, Fig. 1, the piercer-carriers B are al-
ternately engaged by the cams and then re-
leased, after which release they are returned
to their normal position, Fig. 1, by springs B',
that are confined between the hub D and lugs 75
b, extending from said carriers. To prevent
the springs from becoming disengaged, one
end of each enters a recess in the hub D, while
a post, b', extending from each of the lugs, en-
ters the other end of each spring. 80
The nut to be cracked is placed in a central
chamber, I, extending entirely through the
hub D, and into which the shell-piercers pro-
trude when forced inward by the cams, and
said chamber is closed at its discharging end 85
by a movable door, J, which is secured to an
arbor, j, having bearings in the casing. To
automatically open and close this door by the
rotation of the shaft, so as to discharge the
cracked nut, I provide the arbor j with two 90o
pins or projections, j' j, which are engaged by
a post, hi, extending from the end of the shaft
H. The post h' engages the pinj' to close the
door and the pin j' to open the door, so that
with each rotation of the shaft the door is 95
opened and closed once. The gears on the
cam-ring and shaft are so proportioned that
one rotation of the shaft will cause the cam-
ring to revolve through the length of one cam.
Consequently the door is opened as each nut Ico
is cracked.
To automatically feed the nuts to the receiv-
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Koerber, Rudolph C. Nut-Cracking Machine., patent, November 23, 1886; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth171401/m1/3/: accessed June 22, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.