Latest Addition to the Directory of American Tools and Machinery Patents (DATAMP)

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Updated: 21 hours 1 min ago

US Patent: 912

September 20, 2019 - 8:07am
Corn Sheller Patentee: Rufus Porter - Billerica, Middlesex County MA Granted:1838-09-12


This is one of 61,990 patents currently in the database at datamp.org

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US Patent: 294,296

September 14, 2019 - 6:22am
Lathe-chuck Patentees: David E. Whiton - West Stafford CT , Lucius E. Whiton - Est Stafford CT Granted:1884-02-26

"Our invention relates to that class of lathe-chucks whose jaws are moved radially in guide ways or slots made in the front face of the shell or case by a rotary disk operated by pinions within the shell, and provided with a convolute or scroll thread made on its outer face, which engages in the teeth made on the back side of each jaw. The object of our invention is to secure the greatest strength, durability, and accuracy in and to completely inclose all the actuating parts, to give easy access to the same when desired, and to provide means to secure the back plate to the shell at the same time the chuck is secured to the chuck-plate..."
This is one of 61,931 patents currently in the database at datamp.org

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US Patent: 1,391,039

September 12, 2019 - 5:57am
Electric Grinder Patentee: Chester H. Beach - Racine, Racine County WI Granted:1921-09-20

Sheridan, Jones, Sheridan & Smith patent attorneys.
This is one of 61,909 patents currently in the database at datamp.org

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US Patent: 1,859,068

September 11, 2019 - 5:49am
Electric Grinder Patentee: Chester H. Beach - Racine, Racine County WI Granted:1932-05-17


This is one of 61,905 patents currently in the database at datamp.org

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US Patent: 1,370,598

September 10, 2019 - 5:12am
Chuck Patentee: Donald H. Lapointe - Hartford, Hartford County CT Granted:1921-03-08


This is one of 61,904 patents currently in the database at datamp.org

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CA Patent: 380,483

September 9, 2019 - 5:01am
Lathe Patentee: John T. Hepburn - Toronto ON Canada Granted:1939-04-04

"This invention relates to new and useful improvements in lathes and particularly to lathes used in the manufacture of shells. In manufacturing shells they must be a predetermined weight when finished and it is usual to weigh them before they form the recess in the base. The inspector or party weighing the shells marks in any suitable manner on the shell the excess weight. This mark is used as a guide in the finishing of the product as the shell is practically finished and the final operation of recessing and finishing the base allows the operator to set the machine to take off the necessary metal to bring the shell to the correct weight. The amount of material to be machined off per millimeter of base thickness bears a certain relationship to the weight in grammes and in my invention, I make use of this relationship to set the machine for making the necessary cuts..."
This is one of 61,899 patents currently in the database at datamp.org

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US Patent: 625,046

September 6, 2019 - 4:02am
Screwdriver Patentee: Charles A. Mann - Buffalo NY Granted:1899-05-16

Known example marked with manufacturer and patent date.
This is one of 61,877 patents currently in the database at datamp.org

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US Patent: 1,200,718

September 5, 2019 - 4:02am
Cutter-head Patentee: Henry L. Fisher - Waynesboro PA Granted:1916-10-10


This is one of 61,877 patents currently in the database at datamp.org

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US Patent: 103,821

September 4, 2019 - 4:00am
Improvement in the construction of horse-power for cotton-gins, &c. Patentee: James M. Albertson - New London CT Granted:1870-06-07


This is one of 61,875 patents currently in the database at datamp.org

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US Patent: 2,144,486

September 3, 2019 - 3:50am
Locating Device Patentee: Edmund M. Erb - West Hartford, Hartford County CT Granted:1939-01-17

Also patented in Great Britain, patent #GB-501631.
This is one of 61,867 patents currently in the database at datamp.org

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CA Patent: 585,712

September 1, 2019 - 3:33am
Rectifier assemblies Patentee: Carl Stanley Weyandt - Homer City PA Granted:1959-10-27

The inventor operated Syntron Co., makers of the "Syntron Electric Hammer".
This is one of 61,836 patents currently in the database at datamp.org

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US Patent: 1,465,733

August 31, 2019 - 3:30am
Bending Machine Patentee: Julius H. Holmgreen - San Antonio, Bexar County TX Granted:1923-08-21


This is one of 61,805 patents currently in the database at datamp.org

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US Patent: 119,838

August 29, 2019 - 3:29am
Improvement in Pipe Wrenches Patentees: David Frank - Allentown PA , Theophilus Snyder - Allentown PA Granted:1871-10-10

The combination of graduated hook sizes on the spring-loaded rotating head and on the main bar enable to tool to grasp a wide range of pipe sizes.
This is one of 61,776 patents currently in the database at datamp.org

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US Patent: 594,632

August 28, 2019 - 3:27am
Speed Regulator Patentee: Nathaniel Lombard - Boston, Middlesex County MA Granted:1897-11-30


This is one of 61,764 patents currently in the database at datamp.org

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US Patent: 220,034

August 27, 2019 - 3:14am
Turbine Water-Wheel Patentee: John S. Rechard - York, York County PA Granted:1879-09-30


This is one of 61,759 patents currently in the database at datamp.org

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US Patent: 282,258

August 26, 2019 - 3:13am
Belt-fastener Patentee: Henry Blake - Pepperell MA Granted:1883-07-31

An undated catalog from Hall & Brown Wood Working Machine Co. features "Blake's Belt Studs", available in 8 different sizes.
This is one of 61,751 patents currently in the database at datamp.org

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US Patent: 475,470

August 25, 2019 - 3:02am
Tape measure reel Patentee: Justus Roe - Patchogue NY Granted:1892-05-24


This is one of 61,747 patents currently in the database at datamp.org

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