Improvements relating to Concrete and the like.

    公开(公告)号:GB117504A

    公开(公告)日:1918-07-25

    申请号:GB1069017

    申请日:1917-07-25

    Abstract: 117,504. Stewart, W. J. July 25, 1917. Concretes of low specific gravity are formed by fixing moulded elements of a shapable material such as vitreous clay, or non-vitreous clay, subsequently receiving a vitreous coating and sanding. The aggregate is prepared by moulding clay in uniform moulds, e.g. of spherical form, burning, glazing to render non-absorbent, and causing sand to adhere to the glaze before cool to produce a rough surface. Such aggregates, in differing forms and sizes, from a quarter to three-quarters of an inch in diameter, are employed with sand and lime to constitute concretes, which, if they are to be moulded, may have the aggregate elements systematically arranged according to size in the mould. The matrix material, such as cement, is caused to flow in from below upwards preferably under pressure so as to displace air and obviate bubbles.

    Improvements in Means for Constructing Pile Foundations.

    公开(公告)号:GB191503444A

    公开(公告)日:1915-11-11

    申请号:GB191503444D

    申请日:1915-03-04

    Abstract: 3444. Stewart, W. J., [Assignee of Frankignoul, E.]. Feb. 14, [Convention date]. Piling; piles, driving.-In sinking metallic tubing for the formation of concrete piling for foundations, of the kind wherein a movable metallic piece resting on a rim near the bottom of the tube is struck by a monkey, a wooden or other elastic member k is interposed between the ordinary inelastic member c and the ground. The wooden piece k may be provided with a metal cone l or may itself be pointed and prolonged to any suitable length, in which case it may remain in the ground to serve as the base of the pile formed by ramming concrete into the tubing b. Water-tight rings r may be placed between the wooden piece k and the ring e.

    Improvements in and relating to the Construction of Piles.

    公开(公告)号:GB191008488A

    公开(公告)日:1911-01-05

    申请号:GB191008488D

    申请日:1910-04-08

    Abstract: 8488. Stewart, W. J. April 8. Piles; piles, driving. - Hollow wooden and other piles, which may, after driving, be filled with concrete, are constructed of stout longitudinal ribs 1 alternating with lighter ribs 2 and connected together, ior example, by means of stays not shown in Fig. 2. A light sheathing 4 of wood or other suitable material is connected to the ribs; and on the outside of the sheathing are secured longitudinal pieces 5 of hoop iron &c., to the exterior of which are fastened hoops 6. The shoe, which consists of a baulk of timber 7 having an iron or steel point 8, is attached to the ribs 1, 2, and the sheathing 4 and vertical pieces 5 may also be brought down over the shoe. The pile is driven by means of a core provided with fixed or adjustable horizontal or longitudinal ribs which contact with the lighter ribs of the pile. Fig. 8 shows a hollow core 10 with ribs 11 which are made to collapse inwardly by means of toggles 16 operated by a rod 17. Fig. 6 shows a solid core 10 projecting through the bottom of a pile and provided with shoulders 12, as described in Specification 7454/09, or with projections 14, 15 for assisting in pulling the pile downwards.

    Improvements in and in the Method of Driving Hollow Reinforced Concrete Piles.

    公开(公告)号:GB190907454A

    公开(公告)日:1909-05-28

    申请号:GB190907454D

    申请日:1908-05-28

    Abstract: 7454. Stewart, W. J. May 28, 1908. Piles ; p i l e s, driving. - Relates to the method of driving hollow reinforced concrete piles by means of a driver acting within the pile, and formed with projections engaging with projections on the interior surfaces of the pile. The improvements comprise the use of segmental projections 11, Fig. 1, on the driver, and corresponding segmental projections 10 on the pile, or, as an alternative, pivoted levers 13, Fig. 4, which are separated by means of disks 15 on a rod 16, may be caused to engage with shoulders 12, on which are placed cushions 6. A collapsible shoe, Fig. 7, may be employed in combination with these drivers. This comprises arms 19, to which a light mantle 22 is temporarily secured, and movably pivoted to the driver by means of pivots 21 running in slots 20. When the driver is withdrawn, the mantle 22 is left in the ground, the disk 23 rises into a cavity, and the arms 19 collapse. The driver may be constructed of T-irons, Fig. 6, bolted or riveted together and carrying collars or projections, not shown. Specification 28,269/07 is referred to.

    Improvements in and relating to Excavating for Concrete or other Piles, Well Sinking and other Work of a similar kind.

    公开(公告)号:GB190614647A

    公开(公告)日:1907-04-04

    申请号:GB190614647D

    申请日:1906-06-27

    Abstract: 14,647. Stewart, W. J. June 27. Excavating; piles.-Excavating - apparatus for sinking concrete and other piles, wells, caissons, and shafts, and for mining and other purposes, comprises a stout outer tube fitted with a suitable cutting-shoe and a sliding inner tube in which the material may be removed. Fig. 4 shows the outer tube 1 fitted with the shoe 2 and having a collar 10 on the inner tube 6 resting on a shoulder on the shoe. The tube 6 and the collar 10 are split to facilitate the withdrawal of the material when the rod 19 is raised. Fig. 6 shows a modified form of contracted mouthpiece for the tube 6. The tube 6 is provided with a number of guide-bars 12 which serve to lock the conical mouthpiece 13 in position. Fig. 7 shows the lower end of the tube 6 provided with hinged jaws 16 connected to the rods 19 by links 11. Quadrant-shaped plates 18 are secured to the upper part of the jaws to close any opening between them and the end of the tube 6.

    Improvements in or relating to Ferro-concrete Ship Construction.

    公开(公告)号:GB123558A

    公开(公告)日:1919-02-20

    申请号:GB302818

    申请日:1918-02-20

    Abstract: 123,558. Stewart, W. J., and Woolcock, J. Feb. 20, 1918. Concrete vessels.-In reinforced-concrete ships, the reinforcement consists of two parallel networks, the transverse members of which comprise two elements or bars a, b, spaced apart by inclined ties e, such transverse members being adapted to be ber.t to the section of the vessel without altering the spacing of the elements. The elements may be corrugated to permit alteration of length when bending. The longitudinals d, e are supported in the angles between the elements and the ties, as shown. The ties may all slope in the same direction, and they may be bent around the elements a, b. Or the reinforcement may be formed by slotting and expanding the light double-bulbed rolled section shown in Fig. 5.

    Improvements in the Moulding or Casting of Reinforced Concrete Ships and other Structures.

    公开(公告)号:GB123115A

    公开(公告)日:1919-02-06

    申请号:GB1617417

    申请日:1917-11-06

    Abstract: 123,115. Stewart, W. J. Nov. 6, 1917. Concrete vessels. - In the moulding or casting of reinforced concrete ships and other structures, a skeleton comprising metal reinforcement such as is described in Specifications 115,695 and 115,797, is built up on supporting means as a self - contained structure, and the casing or mould a, a for shaping the concrete is attached to the reinforcement b y bolts e and nuts c, which are connected together in pairs, as shown on the right-hand side of Fig. 1, or are linked by flexible connexions d with parts b of the reinforcement, preferably on the opposite side of the skeleton. The apertures left when the bolts e and casing are removed, are subsequently filled in with concrete. The invention is applicable in the case of ship structures where pro-cast reinforced transverse frames cast and matured prior to incorporation in the structure are employed. as described in Specification 122,045.

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