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    • 2. 发明专利
    • An Improved Rotary Internal Combustion Engine.
    • GB190515936A
    • 1906-11-03
    • GB190515936D
    • 1905-08-03
    • LEHMANN ALEXANDER
    • LEHMANN ALEXANDER
    • 15,936. Lehmann, A. Aug. 3. Gas and like engines, rotary. A revolving- cylinder engine has its cylinders in co-axial pairs on opposite sides of the crank-shaft, the piston - rods being attached to a transverselyslotted yoke b in which the crank-shaft c works ; the slot b in the yoke is not quite at right-angles to the cylinder axis, so that the pistons dwell at the end of their strokes. The engines work on a two-stroke cycle, a charge being drawn through the crank-shaft and port i into the space k, whence it is forced through a chamber l, passages m, n, and ports o into the cylinder and expels the exhaust through ports u which alternate with the ports o. A flange on the head of the piston is notched to uncover the ports o, and the ports p between the notches have grooves p to direct the incoming charge over the cylinder walls. The chambers k are separated from the crank chamber d, which is fitted with stuffing-boxes g and is supplied with oil up to the level of the overflow pipe t through passages q, r, s. Some oil enters the charge inlet i through the pipe t. The frame turns about the crank-shaft on roller bearings as shown.
    • 3. 发明专利
    • An Improved Rotary Internal Combustion Engines.
    • GB190400125A
    • 1904-12-01
    • GB190400125D
    • 1904-01-02
    • ZINGEL GUSTAVUS MARTINLEHMANN ALEXANDER
    • ZINGEL GUSTAVUS MARTINLEHMANN ALEXANDER
    • 125. Zingel, G. M., and Lehmann, A. Jan. 2. Revolving-cylinder type.-An internal-combustion engine has two or more cylinders revolving about a fixed axis. The framework carrying the cylinders carries also exhaust silencers and coolers and serves as a flywheel, and in some cases as a driving-wheel. The cylinders A', A , Fig. 1, are formed in one with a central chamber C. Fig. 5 shows an axial section of the central chamber C. The central shaft B is not continuous, and its two parts carry recessed discs B at their ends on which the casing C runs on ball bearings. Escape of fluid is prevented by plates E', E , spring pressed against flanges e', e . The chamber C is divided into three compartments C , C , C by two discs F', F , which are held against an internal flange F in the chamber by a screw with a spring washer. The fixed eccentric or crank-pin h passes through the chamber C, and the connecting-rods g are arranged on opposite sides of the discs F , F'. The explosive mixture enters the space C between the discs F , F , through the hollow crank-pin h, and escapes to the chambers C , C . In order to effect the distribution, the periphery of each disc F , F is cut away at one place, and the flange F is correspondingly bevelled. The gases issue in a thin sheet, and are thus thoroughly mixed. The discs F , F' may be made thin and flexible and may be circularly corrugated, in order to yield and admit gas to the chambers C , C when their pressures fall below that in the chamber C . After compression by the descending piston the gases pass by passages k , k , Fig. 1, to ports in the cylinders. A guard m on the piston deflects the charge upwards, and prevents mixture with the exhaust, which escapes by a port L' and pipe o' to one of two semicircular cylindrical chambers P' forming the periphery of the framework. Each chamber P is divided into several compartments by partitions q . Compartments are connected by thin metal casings secured to the exteriors of the chambers P and perforations r. The gases escape at the end of each chamber P through perforations.
    • 5. 发明专利
    • Improvements in and relating to Ironing Machines.
    • GB191322422A
    • 1914-10-05
    • GB191322422D
    • 1913-10-04
    • LEHMANN ALEXANDER
    • LEHMANN ALEXANDER
    • D06F71/26
    • 22,422. Lehmann, A. Oct. 4. No Patent granted (Sealing fee not paid). Ironing-machines with roller and stationary iron. -The necks or collar-bands and yokes of shirts are ironed by placing them in position upon a partly felt-covered former a, a mounted upon a rotating shaft b driven by means of screw gearing e with pedal-operated belt-shifting gear, the former being heated internally by means of a gas burner a . After the work is in position, an iron h, shaped to correspond with the former, is forced against it and is kept stationary in the pressing position during ironing. The iron is heated internally, air and gas being supplied through the hollow arm h that supports it, and the necessary movement is obtained by means of a handle k carrying a camplate grooved to engage the teeth of a wheel h secured to the arm and pivoted upon a spindle j . A stationary guard g, constructed of any suitable fabric and supported upon the spindle b, prevent entanglement of the sbirt with the mechanism. According to the Provisional Specification, the front of the shirt is carried by a wire guard to ensure the shirt remaining in position ; the handle for moving the pressing-iron may also operate by means of teeth thereon.