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    • 4. 发明专利
    • Improvements in holders or bases for supporting trees, poles and the like
    • GB304927A
    • 1929-01-31
    • GB373128
    • 1928-02-06
    • JAMES CAMERON SMITH
    • A47G33/12
    • 304,927. Smith, J. C. Feb. 6, 1928. Pedestal stands; flower stands.-A base for supporting a Christmas tree pole, &c. in a vertical position is moulded of heavy material such as concrete and provided with a central opening 11 to receive the pole &c. 9 which is held in position by wedges 10, arranged in longitudinal recesses in the opening 11. Each wedge may extend vertically, shown at 12, above the base to give greater support and may be provided with a recess 13 into which the pole &c. will expand. The bottom of the base is recessed at 6 to receive a water pan 7 and the upper surface is formed with a beaded rim 8 to prevent overflowing of water poured into the opening 11. To further secure the poles &c. 9, a nail may be passed through an inclined hole 29 in the base. In a modification the recess 6 may be provided with castors. In a further modification shown in Fig. 4 the pole is gripped by bowed springs 14 arranged in longitudinal recesses 16. When the clamping devices are removed from the opening 11 the base may be used as a flower stand or jardiniere.
    • 5. 发明专利
    • Improvements in heat-conserving ovens or stoves
    • GB615853A
    • 1949-01-12
    • GB2427546
    • 1946-08-15
    • ANGUS CAMERON SMITHTHOMAS LESLIE MCDONALD
    • 615,853. Electric heat-storage stoves. SMITH, A. C., and McDONALD, T. L. Aug. 15, 1946, Nos. 24275 and 24276. [Class 39 (iii)] A metal heat-storage block 2 is embedded in asbestos or other heat insulating material 16, 17 except for a flat exposed surface 3, the whole being mounted in a container ; and the block 3 is heated by radiation from electric heaters 11 in recesses 9 in the underside of the block forming air pockets open at one end only. The block is of reduced thickness round the recesses and of increased thickness near the rectangular hot-plate surface 3. Needle point bearings 14 adjustably secured on the base of the block reduce heat transmission to the container. A lateral stay 18 is pivoted to the block and the container. Heat insulation 13 is placed in a channel 12 in the top of the container, and an insulated cover may be placed over the surface 3. The bottom wall of an oven may be formed by the block, the flat sides of which are secured to extensions 29 of the inner oven walls. A heat-responsive element of a thermal switch in a hole 42 in a side of the block operates so that the heating elements are in parallel when the block is in use and in series when not.