A new system of practical domestic economy.

Date:
1828
Catalogue details

Licence: Public Domain Mark

Credit: A new system of practical domestic economy. Source: Wellcome Collection.

    66/508 (page 50)
    a particular quarter, connected with the posi- tion of some higher building, or a hill, or grove of trees. In such cases the common turncap, as made by tinmen and ii'onmongers, will generally be found fully adequate to the end proposed. A case has occurred of curing a smoky chimney ex- posed to the MVY. wind, and commanded by a lofty building on the SE. by the following con- trivance. A painted tin cap of a conical form was sus- pended by a ring and swivel, so as to swing over the mouth of the chimney-pot by means of an arched strap or bar of iron nailed on each side of the chimney. When a gust of wind laid this cap (which, from its resemblance in form and use to an umbrella, is called a paravent or wind-guard,) close to tbe pot on one side, it opened a wider pas- sage for tbe escape of the smoke on the opposite side, whichever way the wind came; while rain, hail, &c. were effectually prevented from descend- ing the flue. A patent has recently been granted for an appa- ratus to be fitted to chamber-doors, and applicable, indeed, to every kind of door, for the purpose of stopping out cold currents of air from parlours, drawing-rooms, dining-rooms, balls, passages, bed- rooms, &c. See. and likewise for stopping out sound, smoke, steam, dust, foul air, and floating vapours from without; so contrived as to admit, when re- quired, any quantity of air in an instant by a sim- ple movement with the thumb and finger. Rooms having this invention, will be more equally heated throughout with a saving of nearly half the fuel. On the lower part of the door is fixed tin? patent slider, made of thin wood or iron japanned. When the door is shut against the jamb, it presses against