If you find a patent number or patent date by this manufacturer that is not on this
list, please contact the Site Historian.
Key to Links for Patent Information
USPTO = U.S. Patent Office .
Images of the actual patent can be viewed on the U.S. Patent Office web site but
a special TIFF viewer must be installed with your browser in order properly work.
More information on how to configure your computer to view these patents can be
found at TIFF image Viewers
for Patent Images.
DATAMP = Directory of American Tool And
Machinery Patents . A sister site to VintageMachinery.org with information
on patents related to machinery and tools. A much easier user interface than the
USPTO's for finding information on machinery patents.
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12,747
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Apr. 17, 1855
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Slide Rest for Lathes
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Chester Van Horn |
Springfield, Hampden County, MA |
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15,538
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Aug. 12, 1856
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Planing Metal
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Chester Van Horn |
Springfield, Windsor County, MA |
Note the overarm tool support.
By 1867 Springfield Tool Co.'s machinery lineup was being manufactured by D. L. Harris & Co. |
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33,615
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Oct. 29, 1861
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Improvement in Modes of Lowering Piers into the Water
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Chester Van Horn |
Springfield, Hampden County, MA |
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. |