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    • 3. 发明专利
    • Improvements relating to the refining of paraffin wax
    • GB507761A
    • 1939-06-16
    • GB3491237
    • 1937-12-16
    • BURMAH OIL CO LTDCHARLES ROBINSON SCOTT HARLEY
    • C10G73/36
    • 507,761. Refining paraffin wax. BURMAH OIL CO., Ltd., and HARLEY, C. R. S. Dec. 16, 1937, No. 34912. [Class 91] Paraflin wax is refined by impregnating a carrier of absorbent and reinforcing material to form a solid film, heating the impregnated carrier, and subjecting it to momentary pressure so as to release and remove the sweats. The carrier may be an endless band of cotton duck or a similar wool fabric and may be heated and pressed at successively higher temperatures; in examples, the temperature is increased in small stages from 110‹ or 130‹ to 180‹ F., and sweats removed at each stage. As described, a dry endless band a is immersed in molten wax in a jacketed tank c, excess wax may be removed as the band moves out of the tank by two adjustable doctor blades (not shown), and the band may be cooled in air or passed through cold water in tank d to solidify the wax. When a sufficient length of the band has been impregnated with solid wax the band is passed comtinously through tanks c, d and between sets of rolls b, b immersed in water or other liquid in sweating tanks e. The water is kept at successively higher temperatures in successive tanks by electric heating with thermostatic control. The band is brought up to the necessary temperature in tanks e before reaching the rolls. Each pair of rolls is enclosed in an open casing h, so that the sweats may be,skimmed off and collected separately as they rise to the surface of the water. In a modification. Fig. 3 (not shown), the band moves horizontally through the sweating tanks. The pressure on the band may be adjusted by tensioning a spring which raises the lower roll. A smooth temperature gradient may be maintained in the sweating tanks by thermostatic control. Removal of the sweats may be aided by circulating the water in tanks e or by adding surface-tension reducers e.g., soaps, there may be more than two rolls in a set, and the rolls may be ribbed. The band is dried after leaving the last sweating tank.
    • 4. 发明专利
    • Spring forks for cycles
    • GB348534A
    • 1931-05-11
    • GB454330
    • 1930-02-11
    • CHARLES ROBINSON ZEIDLER
    • B62K25/24
    • 348,534. Spring forks. ZEIDLER, C. R., 253, Two Mile Hill Road, Kingswood, Bristol. Feb. 11, 1930, No. 4543. [Class 136 (iii).] A spring fork for pedal cycles comprises an unsprung main fork member, a supplementary fork member mounted on the main fork member by means of three slidable mountings, one at or near each of the lower ends of the fork and a third above the periphery of the wheel, and one or more springs between the main and supplementary fork members, and is characterized in that the lower slidable mountings are disposed wholly below the wheel axle. The main fork member a is provided with a steering-column c, and a supplementary fork member m, adapted to carry the wheel at q, is slidably mounted at or near its ends on the main fork member under the control of a C-spring t secured to the crown b. The lower ends of the supplementary member m are provided with plunger-like extensions r adapted to slide in bored lugs d, which are fitted with packing-glands f and oil cups e for lubricant, a coiled compression spring being interposed between the end of each extension r and the bottom of the cup e. The upper ends of the members m are connected together by a bolt o, on which is pivoted an eyed stud l having a head adapted to slide in a T-sectional slot j in a box h depending from a bracket g, which is mounted between nuts on the threaded end of the steering-column c. A rubber &c. buffer p on the bolt o is adapted to engage the bracket g to limit the extreme upward movement. The C-spring t is looped around and bolted to a cross-bar n between the members m, the bolt hole in the spring being enlarged to permit pivotal movement of the spring.