https://www.datamp.org/ Recently added patents en-us https://www.datamp.org/patents/displayPatent.php?id=39647&pn=1,386,149 Wrench Patentee: Allen C. Allan - Chicago IL Granted:1921-08-02
Manufactured by ALLAN-DIFFENBAUGH Wrench and Tool Co. - Baraboo WI

Introduces a pivot-bolt as an alternate to the "pass through" connection in the sliding pivot tongs / wrench patented by Allan in April, 1920 (pat. no. 1,337,986). The shape of the tongs halves and location of the slot for the pivot is such that the jaws remain parallel through their range of adjustment. A plier wrench conforming to this patent was produced, marked "Patent Pending." It appears in a February 1921 ad appearing in conjunction with a brief article about the ALLAN-DIFFENBAUGH "factory." This is the middle of three patents cited on the KANT-SLIP plier wrench. This patent together with the April 1920 patent was used in the KANT SLIP A.D. WRENCH & TOOL CO BARABOO WIS tongs wrench (see patent no. 1,490,902, 2nd image).
This is one of 83,694 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=35498&pn=1,862,817 Wrench Patentee: Joseph Eifel - Chicago IL Granted:1932-06-14
Manufactured by American Plierench Corporation - Chicago IL

The pivot point rides in a slot; a spring against the pivot pushes the handle into engagement with the sliding jaw. The sliding jaws are interchangeable; three jaw styles are shown in the drawings. The siding pivot allows the movable jaw and handle to be re-set in relation to each other so the handles are comfortable through a wide range of jaw openings. The gearing feature has sufficient mechanical advantage that these pliers will hold their grip "hands free." The tool includes a wire cutter, and one handle ends in a screwdriver. Some parts in some versions of the tool show the Dec. 31, 1927 date. The tools were offered through direct advertising & "agency" arrangements, rather than through "traditional" wholesale & retail channels. Eifel produced extra jaws, jaw blanks, and auxiliary parts to accompany the tool. These were offered as "kits." Some ads noted parts were standardized so that parts made after 1932 would fit any tool made after 1932. A smaller 7 inch size was also introduced ca. 1932 / 1933. The tool continued to be produced for several decades, with additional jaw forms and auxiliary parts introduced after WWII, and a succession of company names after Eifel's "retirement" and death. Eifel's earliest versions of this tool were based on patent no. 1,181,654. Eifel produced successive editions of a 64 page promotion and instructional booklet that accompanied some of these tools; the earliest is dated 1922. He also had other advertising materials promoting the tools and their potential uses. His pre-WWII advertising in popular magazines promoted "agency" and "distribution" roles with inflated claims of potential income which resulted in Federal Trade Commission "cease & desist" orders in a couple of instances.
This is one of 83,694 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=84391&pn=322,177 Cabinet Bed Patentee: Sarah E. Goode - Chicago, Cook County IL Granted:1885-07-14

This was the first patent issued to an African-American woman. Abstract: This invention relates to that class of sectional bedsteads adapted to be folded together when not in use, so as to occupy less space, and made generally to resemble some article of furniture when so folded. The objects of this invention are, first, to provide a folding bed of novel construction, adapted, when folded together, to form a desk suitable for office or general use; second, to provide for counterbalancing the weight of the folding sections of the bed, so that they may be easily raised or lowered in folding or unfolding the bed; third, to provide for holding the hinged or folding sections securely in place when the bed is unfolded, and, fourth, to provide an automatic auxiliary support for the bedding at the middle when the bed is unfolded. Claim: The combination, with the stationary section A and the folding sections B C, hinged on opposite sides of said stationary section, of a suspended bedding-support, h, secured at each end to the respective folding sections B C, the automatic auxiliary support E, and the 8; jointed braces o.
This is one of 83,694 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=29173&pn=1,553,068 Wrench Patentee: August Edwin Carlberg - Worcester MA Granted:1925-09-08
Manufactured by Walden-Worcester, Inc. - Worcester MA
Assigned to Walden-Worcester, Inc. - Worcester MA

The patent covers the extended "loop" providing extra leverage for initial loosening and final tightening with a "speed" brace wrench. Introduced as the "Double Power Brace Wrench." Several Walden-Worcester No. 15xx and No. 17xx speeders employed this design. Examples are known with "PAT PEND." and with the patent number. The numbering reflects sizes in 32nds - 22/32 = 11/16; 20/32 = 5/8. The "knob" handle end shown on this drawing reflects S.R. Enberg's March 1, 1923 patent no. 1,537,529. Moses, Hammond, Morse & Nolte - patent attorneys
This is one of 83,694 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=17352&pn=135,084 Wrench Patentee: Edward A. Cooper - Lancaster NY Granted:1873-01-21

The patent is for the "lips" or "flanges" which keep the open end from sliding down past a nut while it is run down a bolt. It is shown in the context of a carriage or wagon wrench. An 1876 hardware catalog lists "COOPER"S COMMON SENSE WRENCH." One known example is marked with the patent date; the marking may not show depending on wear & quality of the original casting. This type of feature also appears in some "malleable implement wrenches" with part numbers.
This is one of 83,694 patents currently in the database at datamp.org

]]>