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W. S. Laycock
| Name | W. S. Laycock |
| Ortssitz | Sheffield (England) |
| Straße | Victoria Street |
| Art des Unternehmens | Metallwarenfabrik |
| Anmerkungen | Bezeichnet als "Railway-Carriage Fittings Works". Stellt Rollen für Stoff-Rollos und Ventilatoren für Schiffe und Bahnen her. |
| Quellenangaben | [Institution of Mechanical Engineers: Visits to Works (1890)] = Grace's Guide |
| Produkt |
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Kommentar |
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1890 |
Besuch Inst. Mech. Ing. |
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| ZEIT | 1890 |
| THEMA | Beschreibung |
| TEXT | Novel machinery is employed for the manufacture of blind rollers and other fittings invented by him for railway carriages and steamships, &c. The blind rollers are so contrived that the blind, made usually of horse-hair cloth, will stay in any position intermediate between top and bottom. Within the hollow brass box at one end of the roller is coiled a spiral spring tending to roll the blind up. At the bottom of the blind is a weight just too heavy for the spring to lift but when the weight is lifted by hand, the blind will roll up. When the weight is unsupported, the blind is prevented from running down by a ratchet and paul in the brass box at the other end of the roller. The ratchet is connected with the roller by a pair of friction discs pressed together by a spring; a slight pull by the hand is sufficient to overcome the friction of the discs, and to draw the blind down. It is then retained in any position by the weight, which is not heavy enough to make the friction discs slip; while the spring tending to pull the blind lip is not strong enough to overcome the weight. The device is simple, and little likely to get out of order.
A double-cone ventilator for railway carriages is constructed of two hollow cones, laid horizontally in the same straight line, base to base, with a space between; the space is surrounded at a short distance by a flat ring, which also covers a short length of the cones. There is thus an annular space between the bases of the cones, and an external annular space between these and the outside ring surrounding them. A short open pipe from the roof of the carriage communicates with the interior of the cones. The horizontal axis of the cones being placed transversely to the direction of motion, the air on striking their surfaces is deflected laterally towards the apex on each side, thereby producing a partial vacuum underneath the flat ring, and thus inducing a suction from the carriage through the short pipe into the interior of the cones. When this pipe is 4 inches diameter, it is found that at a speed of 60 miles an hour a light diaphragm placed across its mouth will support a weight of 2.5 ounces.
Among the numerous other articles produced at these works are lubricators for axle journals, spring seats, window lifts, and draught excluders. The machinery employed in the manufacture is driven by a gas engine, and the electric lighting apparatus by another of a different kind. |
| QUELLE | [Institution of Mechanical Engineers: Visits to Works (1890)] = Grace's Guide |
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