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    • 6. 发明专利
    • An Improved Adjusting Spanner, Plyers, and Screw-driver Combined.
    • GB190620602A
    • 1907-07-25
    • GB190620602D
    • 1906-09-17
    • FREEMAN DAVID WISWOULD
    • FREEMAN DAVID WISWOULD
    • 20,602. Freeman, D. W. Sept. 17. Combination tools.-A combination hand-gripping tool, of the type in which a loose jaw is cornected by pin-and-slot mechanism to an operating-handle on the fixed jaw, is arranged to act as a spanner, pliers, and screwdriver. The tool, as shown in Fig. 1, comprises a long arm A which is shaped at one end to form a screwdriver J, and has a fixed jaw B with a lateral extension D at the other end. The movable jaw C slides on the extension D and is actuated from the short arm F, which is pivoted at E and is connected to the movable jaw by the pin-and-slot connexion H. The two jaws are maintained in the gripping position by the binding action of the loose jaw upon the slide piece, or by means of notches and a suitable spring or catch. In a modified construction, the fixed jaw is bent at 'right-angles to the stem A, the guide D omitted, and the movable jaw slides on the shank A of the fixed jaw. According to the Provisional Specification, when the tool is required only for use as a spanner and screwdriver, the arm F is omitted, and the movable jaw C has a pin-and-slot connexion with a short member riveted to the slide D.
    • 7. 发明专利
    • TRANSFORMER CORE COMPRISING GROUPS OF AMORPHOUS STEEL STRIPSWRAPPED ABOUT THE CORE WINDOW
    • CA2096149C
    • 2003-08-12
    • CA2096149
    • 1993-05-13
    • FREEMAN DAVID R
    • FREEMAN DAVID R
    • H01F27/24H01F27/25H01F41/02
    • This transformer core comprises superposed groups of amorphous steel strip wrapped about the core window, each group comprising an inner section and an outer section disposed in superposed relationship and each section comprising many thin layers of amorphous steel strip. Each of the layers in a section has a length dimension measured between the transversely-extending edges of the layer located at opposite ends of the section. The layers in the inner section of a group have substantially equal lengths, and the layers in the outer section of said group have substantially equal lengths of a greater value than the lengths of the layers in the inner section. At one end of each group the transversely-extending edges of all the layers in said group are substantially aligned to form a smooth edge. At the other end of the group (i) the transversely-extending edges of the layers in the inner section are disposed to form a beveled edge for the inner section, (ii) the transversely-extending edges of the layers in the outer section are disposed to form a beveled edge for the outer section, and (iii) the beveled edge of the outer section overlaps the beveled edge of the inner section.