Silo Construction Page: 2 of 3
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UNITED STATES PATENT OFFICE.
PAUL A. DIETZ, OF FORT WORTH, TEXAS.
SILO CONSTRUCTION.Specification of Letters Patent.
Patented Nov. 13, 1917.
Application filed November 7, 1916. Serial No. 129,937.
To all whom it may concern:
Be it known that I, PAUL A. DIETz, a citi-
zen of the United States, residing at Fort
Worth, in the county of Tarrant and State
5 of Texas, have invented certain new and use-
ful Improvements in Silo Construction, of
which the following is a specification.
My invention relates to silos and more
particularly to cylindrical wooden stave
10 silos; and the object is to provide single wall
vertical cylindrical silos and to make silos
which are strong and durable and economi-
cal. Another object is to provide means for
taking up shrinkage between the staves and
15 to keep the wall air and water tight. An-
other object is to provide means in connec-
tion with the wall construction that will
hold the wall against collapsing or caving
in when subjected to strong winds. The im-
20 proved silo has the wooden construction
which is a non-conductor of moisture, heat,
and cold and has the improved construction
by which the shrinkage can be remedied or
taken up at any time. Other objects and
25 advantages will be fully explained in the
following description and the invention will
be more particularly pointed out in the
claims.
Reference is had to the accompanying
30 drawings which form a part of this appli-
cation.
Figure 1 is a side elevation of the body of
a silo which shows the stave arrangement.
Fig. 2 is a broken detail view of a wedge for
35 taking up shrinkage, showing the devices
for operating the wedge. Fig. 3 is a plan
view of a wedge, showing the clip attached
to the wedge which is to be engaged by the
cable for tightening the wedge. Fig. 4 is a
40 horizontal section of a portion of the staves
of the silo, showing the devices for sealing
and for taking up the shrinkage. Fig. 5 is
a similar view on- a larger scale. Fig. 6
illustrates a variation in the devices for tak-
45 ing up the shrinkage.
Similar characters of reference are used
to indicate the same parts throughout the
several views.
One of the principal features of this im-
50 proved silo is the cylindrical single vertical
wall construction. The staves consist of
timbers which are two by four inches in
cross-section. The timbers 1 are set verti-
cally and as the wall is cylindrical the inner
55 edges of the timbers will be beveled suffi-
ciently to make the timbers lie against eachother throughout their entire length and
width. All the timbers indicated by the
character 1 have grooves 2 in each side there-
of -and all the timbers indicated by the char- 60
acter 3 have grooves 2 in one side only.
Bands 13 of ordinary construction hold the
staves 1 in place. Sealing strips or members
4 are inserted in the grooves of adjacent tim-
bers and extend throughout the length of 65
the timbers for the purpose of sealing the
joints between the members. This construc-
tion is preferable to the tongue and groove
construction because it is less expensive and
the grooves can be made deeper and the seal- 70
ing members will guard against shrinkage
leaks. The .construction of the two by four
inch timbers with the manner of sealing
makes an inexpensive structure which is
relatively very strong. Of course heavier 75
timbers may be used if desirable. Provision
is made for guarding against leaks by
shrinkage of the timbers and also against
the timbers shrinking so much that the wall
would be liable to fall inwardly or down- 80
wardly. The timbers 1 and 3 are kept
pressed against each other by wedges 5. The
timbers 3 are placed at intervals and a
wedge 5 is placed between two timbers 3.
Provison is made for tightening the timber . 85
whenever the timbers shrink. Cables 6 are
anchored to some rigid structure in or on
the ground and connected to the wedges 5
and provided with turnbuckles T. The
wedges 5 can be forced radially outward by 90
the cables and turnbuckles by simply tight-
ening the turnbuckles. The cables 6 thus
serve as braces for the silo wall. In order
to prevent angular corners about the inner
edges of the wedges, the angles may be filled 95
with vertical strips 8. In order to make a
horizontal pull on the wedges 5, crank brack-
ets 9 are pivotally mounted in bearings 10
which are bolted to the timbers 3. The ends
of the cranks 9 project far enough through 100
the bearings 10 to provide for expansion of
the members 3. The cables 6 run on top of
the crank brackets 9 which will swing down-
wardly to some extent when the cables are
tightened. The cables 6 may be attached to 105
the wedges 5 in any suitable manner. The
drawings show metal straps 11 bent to form
an eye for the cables in the bight thereof
and the two ends of the strap may be counter
sunk in the sides of the wedge as shown in 110
Fig. 3 and the ends of the strap driven into
the wedge.1,246,564.
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Dietz, Paul A. Silo Construction, patent, November 13, 1917; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth853659/m1/2/: accessed July 6, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.