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

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Updated: 4 hours 2 min ago

US Patent: 739,992

4 hours 2 min ago
Yieldable Pitman for Power Hammers Patentees: Frank F. Davidson - Tama, Tama County IA , George T. Strite - Tama, Tama County IA Granted:1903-09-29


This is one of 60,858 patents currently in the database at datamp.org

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GB Patent: 171,500,401

March 22, 2019 - 11:03am
Cleaning and curing the Indian corn growing in the several colonies of America Patentees: Sybilla Masters - Philadelphia PA , Thomas Masters - Philadelphia PA Granted:1715-11-25

This patent is significant for a few reasons. It is the first patent issued to a resident of the American colonies. It is the first (known) patent for an invention created by a woman. She was not permitted to apply for the patent herself, so her husband applied on her behalf, stating that the invention was "found out by Sybilla Masters his wife". Even acknowledging that a woman had invented something was seen as irregular but Thomas was able to do so because of his political prominence (Masters had earlier served as alderman and mayor of Philadelphia, then as a provincial councilor). The Masters produced the cornmeal from this invention, selling it as "Tuscarora Rice" as a treatment for tuberculosis as well as a foodstuff. The invention itself consisted of a horizontal wood with a series of pegs sticking out of the cylinder. A handle rotated the cylinder and pegs to left and then drop mortars into pestles that were filled with corn. The machine could be powered by water-wheel or by horse-power
This is one of 60,856 patents currently in the database at datamp.org

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US Patent: 2,704,479

March 21, 2019 - 10:49am
Slidable Jaw, Ratchet-Operated Wrench Having A Detachably Pivotally Adjustable Handle Patentee: Ted Stang - Rockford IL Granted:1955-03-22

The key element of the patent is a ratchet connection between the handle and the frame holding the adjustable jaw. This allows for adjusting the angle between the head and handle to enable the wrench to operate in locations difficult of access. A known example uses the simpler of the alternate ratchet forms described in the patent. Tedd Products Co., Rockford, IL marketed this as the HANDI-FLEX wrench. The patents cited as references includes the early Meader ratchet -- nos. 45,931, 525,683, 525,684, 1,564,838, 1,650,085, 1,724,491 and 1,944,171.
This is one of 60,837 patents currently in the database at datamp.org

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US Patent: 705,730

March 20, 2019 - 10:36am
Balanced slide-valve Patentee: John T. Wilson - Jersey Shore PA Granted:1902-07-29


This is one of 60,836 patents currently in the database at datamp.org

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US Patent: 1,390,498

March 19, 2019 - 10:34am
Glazier's Hammer Patentee: Franklin R. Chandlee - St. Joseph MO Granted:1921-09-13

Triangular shaped head that allows the handle to be rotated to the best working position while keeping the one side of the hammer flat to the glass while hammering in glazier points. Chisel on the opposite end is not an element of the patent claim. Example known but with no mfg. markings.
This is one of 60,836 patents currently in the database at datamp.org

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GB Patent: 184,209,382

March 18, 2019 - 10:33am
Improvements in machinery or apparatus for forging, stamping, and cutting iron and other substances Patentee: James Nasmyth - Patricoft, near Manchester England Granted:1842-12-09

The piston rod coming out at the bottom of the cylinder is attached to the hammer. High-pressure steam is let in under the piston, which raises piston and hammer to any required height. The hammer is guided by planed rails. The cylinder valve opens the hammer falls on the work with full force due of gravity and then is immediately lifted by new steam entering the cylinder. To lessen the force of the blow the steam timing can be advanced so that the steam enters the cylinder before the hammer has hit the work, and that steam absorbs some of the force. Nasmyth claimed that this system could be so precisely adjusted that the hammer blow could be made to step within one-tenth of an inch of the anvil. A later refinement was to use a double-acting cylinder that allowed the force of the hammer to exceed that due solely to falling by gravity.
This is one of 60,835 patents currently in the database at datamp.org

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US Patent: 1,514,808

March 16, 2019 - 10:08am
Skirt Marker Patentee: Rudolph Wasserman - New York NY Granted:1924-11-11

Chalk dust is forced out of a thin opening from the chalk canister to mark a line on the skirt at the proper height.
This is one of 60,822 patents currently in the database at datamp.org

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US Patent: 878,672

March 15, 2019 - 10:04am
Tool Holder Patentee: Pearl H. Robinson - Shelton, Fairfield County CT Granted:1908-02-11


This is one of 60,813 patents currently in the database at datamp.org

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CA Patent: 89,850

March 14, 2019 - 9:45am
Power Hammer Patentee: Henry W. Hathorn - Mason City, Cerro Gordo County IA Granted:1904-11-01

This is the Canadian equivalent of U. S. patent #758,361.
This is one of 60,812 patents currently in the database at datamp.org

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US Patent: 502,042

March 13, 2019 - 7:52am
Hoof Cleaning Tool Patentee: Robert C. Jenner - San Antonio, Bexar County TX Granted:1893-07-25


This is one of 60,794 patents currently in the database at datamp.org

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US Patent: 3,293,754

March 12, 2019 - 7:08am
Scribing Tool Patentees: Albert Joseph Lenzini - San Francisco CA , Max A. Holzwarth - South San Francisco CA Granted:1966-12-27


This is one of 60,793 patents currently in the database at datamp.org

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US Patent: 758,361

March 11, 2019 - 7:06am
Power Hammer Patentee: Henry W. Hathorn - Mason City, Cerro Gordo County IA Granted:1904-04-25


This is one of 60,791 patents currently in the database at datamp.org

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US Patent: 302,520

March 10, 2019 - 6:59am
Trip Hammer Patentee: Isaac L. Penney - Minneapolis, Hennepin County MN Granted:1884-07-22


This is one of 60,788 patents currently in the database at datamp.org

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US Patent: 2,776,679

March 9, 2019 - 5:47am
Overhead belt work feeding device for a saw Patentee: Hugh W. King - Corinth MS Granted:1957-01-08


This is one of 60,781 patents currently in the database at datamp.org

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US Patent: 753,915

March 8, 2019 - 5:05am
Wrench Patentee: Charles H. W. Relyea - North Adams MI Granted:1904-03-08

The adjustable jaw is held open by a spring, and the opening size adjusted by a "stepped" wedge. Both the fixed and adjustable ends are "alligator wrenches." The patent claims the structure and function of the adjustable jaw. A known example is marked with the patentee name and patent date. Compare the wedge adjustment in this wrench to the T.F. Vandegrift patent 444,171.
This is one of 60,780 patents currently in the database at datamp.org

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US Patent: 199,568

March 7, 2019 - 4:54am
Improvement in Lasting Hammers Patentee: Patrick F. Peters - Natick MA Granted:1878-01-22

Used for lasting shoes by combining a hammer, awl, and spring. The spring is utilized to help withdraw the awl from the sole.
This is one of 60,774 patents currently in the database at datamp.org

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US Patent: 716,521

March 4, 2019 - 2:57am
Saw Handle Patentee: Maschil D. Converse - New York New York Granted:1902-12-23

An improvement to cast iron Compass/ Keyhole saws, An off set "Key Pin", locks the blade into place.
This is one of 60,772 patents currently in the database at datamp.org

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US Patent: 54,653

March 1, 2019 - 2:00am
Nut Cracker &c. Patentee: George L. Witsil - Philadelphia PA Granted:1866-05-08

The combination includes the functions of ice pick, "gas burner forceps," pipe tongs, nut cracker, tack and nail puller, hammer, meat tenderer, and plate lifter.
This is one of 60,767 patents currently in the database at datamp.org

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US Patent: 2,120,031

February 28, 2019 - 1:56am
Lubricating Device Patentee: Hunter B. McElrath - Winston-Salem NC Granted:1938-06-07

The leaf spring spreader is a sliding wedge operated by a lever with a cam-tipped end. The lubricant (graphited grease) is injected from an outside source. The tool is fairly large scale, and appears to be intended for use on truck suspension springs. Corresponding tool is marked, "THE RENSON PRODUCTS CO. CONSHOHOCKEN PA. SPRING CONDITIONER. PATENT PENDING."
This is one of 60,758 patents currently in the database at datamp.org

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US Patent: 1,578,699

February 26, 2019 - 1:19am
Leaf-Spring Lubricator Patentee: Ralph W. Ammons - Los Angeles CA Granted:1926-03-30

The wedge shaped "fixed" jaw has a central bore for passage of lubricant. The end with the "spreader" can be adjusted to compensate for different widths of springs by a clamping nut and wedge teeth that engage the base of the frame. The "spreader" is a circular piece eccentrically mounted on a shaft; the edge ranges from thin to thick. The shaft holding the spreader extends some distance beyond the frame base and the portion extending beyond the frame is hexagonal. An auxiliary wrench (fig. 4 in the drawings) operates the shaft with the "spreader" and also is used to loosen and tighten the clamping nut. An example of the auxiliary wrench is known, marked "T5 - R W AMMONS L.A. CAL / PAT PEND"
This is one of 60,741 patents currently in the database at datamp.org

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