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US Patent: 6,715X
Railroad Rails
Rails or Plates for Railroad Carriage Wheels
Patentee:
James Stimpson (exact or similar names) - Baltimore, MD

USPTO Classifications:
238/131

Tool Categories:
transportation : railroads : track and switches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Granted: Aug. 23, 1831

Reissue Information:
Reissued as 9,129X (Sep. 26, 1835)

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Description:
Most of the patents prior to 1836 were lost in the Dec. 1836 fire. Only about 2,000 of the almost 10,000 documents were recovered. Little is known about this patent. Only the patent drawing is available. This patent is in the database for reference only.

“For an improvement in the mode of Forming and using cast or wrought iron plates, or rails, for Rail-road Carriage Wheels to run upon; James Stimpson, city of Baltimore, Maryland, August 23.

The claim in this case is to the application of cast or wrought iron plates for the use of rail-ways on the streets and wharves of cities, or elsewhere. The objects of said improvement being to employ rails that will not present any obstacles to the ordinary use of streets, or sustain injury therefrom, and so to form the plates at the intersections of streets, or other crossings, that cars will readily pass over them, and also on circles of small radius.

The rails are to be formed with a groove in them to receive the flanches of the wheels; on one side of the groove, the width is to be sufficient for the tread of the wheel; on the other, it need not exceed three-quarters of an inch. These rails are to be laid flush with the pavement of the streets. At corners to be turned the rails are to be cast, or made of the proper curvature, one of them only being provided with a groove, as the flanch is to run upon the other, upon the principle described in No. 37. Provision is to be made by scrapers, or brushes, preceding the carriages, to clear the grooves of dust, ice, and other obstructions.”

Journal of the Franklin Institute, Vol. 13, Feb. 1832 pg. 125

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