https://www.datamp.org/ Recently added patents en-us https://www.datamp.org/patents/displayPatent.php?id=85456&pn=1,250,328 Combination Tool Patentee: Edwin L. Langford - Haledon NJ Granted:1917-12-18
Manufactured by E. EDELMANN & Co. - Chicago IL

"Nested" screwdrivers; the head of the smallest size has two sets of threads corresponding to interior threads in the middle and largest sizes. The patent date appears on an example of an E. EDELMANN "3-in-1" nested screwdriver although the internal construction of that screwdriver does not correspond to this patent's claims. The smallest size slides into the hollow handle of the middle size, which in turn fits into the largest size. The threaded cap fits threads in the middle and large sizes. The overall length is almost 5 3/4 inches. In most EDELMANN nested 3-in-1 screwdrivers, the smallest size is threaded into the internal bore of the next largest size, and the two together slip into the largest, which has a threaded retaining cap. The overall length of those 3-in-1 screwdrivers is given as 3 3/4 inches. A similar structure appears in EDELMANN's 4-in-1 screwdriver and in the company's HAN-D hammer with screwdrivers nested in the handle [see patents D54,162 (U.S.), CA-216,934 (Canada) and GB-142,008 (Great Britain)].
This is one of 84,751 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=85455&pn=216,934 Combination Tool Patentee: Erich Edelmann - Chicago IL Granted:1922-03-21
Manufactured by E. EDELMANN & Co. - Chicago IL

Light weight "ball pein" hammer with multiple size nested screwdrivers stored in the handle. Corresponds to British patent GB-142,008 and U.S. Design patent D54,162. Produced as Edelmann's "HAN-D" hammer. The arrangement of the screwdrivers resembles Edelmann's earlier 4-in-1 screwdriver (where the two smallest sizes are "loose" inside the next larger size), and one form of the "Three--in-One" screwdriver. Edelmann also used an alternate arrangement for nested screwdrivers based on 1917 patent no. 1,250,328.
This is one of 84,751 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=50176&pn=D54,162 Hammer Patentee: Erich Edelmann - Chicago IL Granted:1919-11-11
Manufactured by E. EDELMANN & Co. - Chicago IL

Ball-pein hammer with a knurled metal handle; the design seems to show parting lines, so the design may reflect a hammer with nested screwdrivers in the handle. Edelmann received British patent GB-142,008 and Canadian patent CA-216,934 for a hammer with nested screwdrivers stored within its hollow handle. Appears as the HAN-D hammer in a 1920 Edelmann ad. The screwdriver arrangement resembles Edelmann's 4-in-1 screwdriver which had been in production for most of the prior decade. Edelmann also used an alternate arrangement for nested screwdrivers based on 1917 patent no. 1,250,328.
This is one of 84,751 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=76225&pn=148 Improvement in Machines for Nicking and Turning the Heads of Wood-Screws Patentee: Thomas W. Harvey - Poughkeepsie, Dutchess County NY Granted:1837-03-25

Claim: The general combination of the different parts, by the union and arrangement of which in one machine the nicking and turning of the heads are effected simultaneously, which operations have been heretofore performed separately and in distinct machines.
This is one of 84,751 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=27635&pn=2,447,094 Helical Spring Actuated Sliding Side Jaw Wrench Patentee: Royal H. Schlote - Milwaukee WI Granted:1948-08-17
Manufactured by Trebor Machinery Company - Milwaukee WI
Assigned to G. F. Schlote & Company, Inc. - Milwaukee WI

The side slide drives a helical slot in a shaft which transfers power through bevel gears to a worm that adjusts the movable jaw. The specifications cite patent nos. 703,898, 1,354,782, 1,391,180 and 1,739,182 as references.
This is one of 84,751 patents currently in the database at datamp.org

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