The Artizan . f such a pliant, elastic, or soft nature as to conform readilyto the shape of the body, and not to prevent the free use of the arms and upperpart of the person, or to confine the chest, so as to impede the action of the lungs,on which the capability of enduring prolonged exertion or fatigue much seems to have been generally supposed that the least possible amount ofbuoyancy which would suffice to raise the mouth above the surface of the waterwas all that was required, and, accordingly, many of the belts which are sold inthe shops have only buoyant power equal to 68 or
The Artizan . f such a pliant, elastic, or soft nature as to conform readilyto the shape of the body, and not to prevent the free use of the arms and upperpart of the person, or to confine the chest, so as to impede the action of the lungs,on which the capability of enduring prolonged exertion or fatigue much seems to have been generally supposed that the least possible amount ofbuoyancy which would suffice to raise the mouth above the surface of the waterwas all that was required, and, accordingly, many of the belts which are sold inthe shops have only buoyant power equal to 68 or 10 lbs. A little considerationwill, however, make it apparent that the largest amount of buoj-ancy_ which canbe obtained, without seriously incommoding the wearer, and depriving him ofthe free use of his limbs, is no more than is requisite. We believe that a life-belt for an adult person of average size ought to have, atthe least, buoyant power equal to 20 lbs., and as much more as can convenientlybe The Aktizan,]July l, 1861. J Correspondence.—Notices to Correspondents; 165 The belts, as used by the crews of the boats of the Royal National Life-boatInstitution, and invented by Captain J. R. Ward, , its Inspector of Life-boats, have much greater buoyancy than any kind of cork belt previously intro-duced, and have other important peculiarities. 1. Their buoyant power is from 20 to 24 lbs.* 2. The cork is uncovered, so that its quality can always be discerned, and it isdivided into many narrow pieces, each of which is separately sewn on to a stronglinen or duck belt, covering the body from the arm pits to below the hips. 3. These pieces of cork are distributed in two rows, one above, and the otherbelow the waist, the belt being secured closely about the body by strings passedround the waist, between the two rows of cork, and being further secured byother strings crossed over the shoulders, as mens trouser braces are worn. Thisdivision of the cork into two rows is
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Keywords: ., bookcentury1800, bookdecade1840, booksubje, booksubjecttechnology
