US1106383A - Stave-retaining device for silos. - Google Patents

Description

W. A. HOLNAGEL. TAVB RETAINiNG DEVICE FOR SILOS.

APPLIGATION FILED 1330.18, 1912.

Patented Aug. 11, 1914.

WITNESSES: QLAES'M QTBNMA.

ATTORNEY THE NORRIS PETERS CO., PHOTO-LITHOHIWASHINGTON D. C:

UNITED smrns Parana? onrron.

WILLIAM A. HOLNAGEL, 0F SAGINAW, MICHIGAN, ASSIG-NOR TO FARMERS HANDY WAGON CO., 0F SAG-INAW, MICHIGAN, A CORPORATION OF MICHIGAN.

STAVE-RETAINING DEVICE FOR SILOS.

Specification of Letters Patent.

Patented Aug. 11, 1914.

Application filed December 18, 1912. Serial No. 737,530.

To all whom it may concern Be it known that I, WILLIAM A. HOLNA- GEL, a citizen of the United States, residing at Saginaw, in the county of Saginaw and State of Michigan, have invented certain new and useful Improvements in Stave-Retaining Devices for Silos; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention is a reinforcing device for stave silos and the improvement relates more particularly to the construction and mode of operation of a reinforcing device adapted to reduce the liability of collapse of stave silos when subjected to heavy wind pressure such as is developed during a wind storm or hurricane.

As is well known, stave silos are usually built of a number of tongued and grooved staves bound together by means of external hoops, and my improvement adds to such a silo, independent of the hoops, a reinforcing device adapted to prevent the caving in of the sides of the silo under heavy wind pressure.

With these and certain other objects in view which will appear later in the specification, my invention consists in the devices described and claimed and the equivalents thereof.

In the drawings, Figure 1 represents a front view of a silo with my improved reinforcing device attached; Fig. 2 is a perspective detail of a number of staves to which the device is applied; Fig. 3 is a part horizontal section showing a number of staves with the device in place, as viewed from above; and Fig. A is a perspective view of one of the fastenings of the stifi'ening device.

As is clearly shown in the drawings, the stiffening device consists of a circumferential band or girder fastened to the outside of the silo. The silo itself is formed of the usual staves l bound together by hoops 2. The stiffening band is preferably formed of a plurality of relatively short bars 3, preferably formed of cast metal and provided with longitudinal slots 4 separated midway the length of the bars by a cross-brace 5 preferably cast integral with the bar. The centralbrace 5 is formed with an opening to recelve a wood screw 6 or equivalent device by which the bar is fastened to the outer face of the silo stave. These bars 3 are arranged end to end to form a band extending circumferentially around the silo staves. Between the ends of adjacent bars a clearance space is left to allow for the expansion and contraction of the staves.

Adjacent bars 3 are connected by an in tel-locking member 7 consisting preferably of a T iron. The bottom flange of the interlocking member 7 is received in the slots 4, the remaining flange of the T extending horizontally to form a stiffening rib. The screws 6 and the T iron 7 prevent the staves from slipping upon each other lengthwise and thus allowing the silo to become distorted when subjected to heavy wind pressure.

The bars 3 and the T irons 7 together form a stiffening band or girder that prevents collapse of the silo wall inward when subjected to heavy wind pressure.

Having described my invention, what I claim and desire to secure by Letters Patent, is

1.. In a stiffening device, the combination with the staves of a silo, of a socket-member secured to each of the silo-staves, said socket members arranged to extend in spaced relation circumferentially around said silostaves; and a T-shaped member slidably received in each pair of adjacent socket-members spanning the space therebetween, permitting self-adjustment of the T-shaped members during either expansion or contraction of the silostaves.

2. In a stiffening device, the combination with the staves of a silo, of a socket member secured to each of the silo staves having a pair of oppositely extending longitudinally disposed slots separated by means of a cross-brace, means for fastening each socket member to a silo stave; and a T- shaped stiffening member having opposite ends slidably received in each pair of adjacent socket members.

In testimony whereof, I afliX my signa ture in presence of two witnesses.

WILLIAM A. HOLNAGEL. TVitnesses:

FRED P. CORY, HARRY W. KINNEY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. O.

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