US Patent: 5,580X
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| Power Press for Punching Copper, &c. for Ship's Use
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Patentee:
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| George Darracott (exact or similar names) - Boston, Suffolk County, MA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Granted: |
Jul. 21, 1829 |
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Patent Pictures:
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Journal of the Franklin Institute Vol. 7, Oct. 1829 pg. 262 |
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Joel Havens
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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. There are no patent drawings available. This patent is in the database for reference only.
“For a machine called the Power Press,' for Punching Copper, or other Metallic Plates, for ships' use; George Darracott, Boston, Massachusetts, July 21.
This press is intended to punch, at once, all the holes required in a sheet of copper, or other metal. A strong frame of wood is secured together by bolts and screws; the upper timber of this frame, is about five feet long, fourteen inches wide, and six inches thick, the ends and bottom being of corresponding strength. Under this is a moveable piece, or follower, which is capable of being raised, by means of the progressive levers, or toggle joints, which are placed 'below it. This follower is, in the specification, denominated the plattin; it is about four feet seven inches long, thirteen inches wide, and six inches thick. These two timbers stand at about four inches apart. This space is occupied by two pieces of plank, each about two inches thick, and of the same length and width with the plattin; in the upper one are fixed as many punches as there are to be holes sin the sheet, and in the lower one corresponding dies; a sheet of iron being placed between each plank, and its corresponding timber, to support the punches and dies.
The power is obtained by an arrangement of progressive levers similar to that shown in the margin; the middle joint being forced down by a lever, causes the plattin to rise, and the plate! upon it to be perforated.”
Journal of the Franklin Institute Vol. 7, Oct. 1829 pgs. 261-262
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