US Patent: 33,615
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Pier
Improvement in Modes of Lowering Piers into the Water
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Patentee:
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| Chester Van Horn (exact or similar names) - Springfield, Hampden County, MA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Granted: |
Oct. 29, 1861 |
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Patent Pictures:
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Joel Havens
"Vintage Machinery" entry for Springfield Tool Co.
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Description: |
| Munn & Co.- patent attorneys
Abstract:
In building piers of masonry for bridges and other structures over water the piers are in many cases built on platforms which are powered into the water from time to time as the work progresses until the platforms rest on the bottom. The platforms now used for such purpose are supported by screw-rods from a suitable framing and the nuts of the rods turned independently and separately by operatives when the platforms are to be lowered, The difficulty attending this arrangement is the expense and tediousness of the operation of lowering, and also the care required in keeping the platforms level or horizontal, as the rods require to be lowered precisely alike. The object of the within described invention is to overcome these difficulties; and to this end I connect the nuts of the several screw-rods by mechanism so arranged that all the nuts will be operated simultaneously from one and the same driving-shaft, and consequently not only much labor saved in lowering the platforms but the horizontality of the same always preserved.
Claim:
The connecting of the several nuts D of the screw-rods B to a common driving-shaft J, substantially as shown or in an equivalent way, when said screw-rods and nuts are employed to sustain a platform C for the purpose of lowering piers into the water during the course of construction. |
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