. Glasgow mechanics' magazine; and annals of philosophy . CORRESPONDENTS. A Working Mechanic ; W. H., Dunfermline; and D. M., Lanark, have been received. We haveset about inquiring as to the subject mentioned in the letter of a Mechanic, dated Manchester, andshall insert an answer in our next, or the one immediately following. Communications from intelligent Mechanics will be very acceptable, in whateverstyle they may be written, if they contain a full account of the invention or im-provement, which is the subject of their notice. i^WSMM^SM^S^A/^rf^/MWM\«^»Vl^M><MW^MS»i^ Published every
. Glasgow mechanics' magazine; and annals of philosophy . CORRESPONDENTS. A Working Mechanic ; W. H., Dunfermline; and D. M., Lanark, have been received. We haveset about inquiring as to the subject mentioned in the letter of a Mechanic, dated Manchester, andshall insert an answer in our next, or the one immediately following. Communications from intelligent Mechanics will be very acceptable, in whateverstyle they may be written, if they contain a full account of the invention or im-provement, which is the subject of their notice. i^WSMM^SM^S^A/^rf^/MWM\«^»Vl^M><MW^MS»i^ Published every Saturday, by W. R. MPhun, 155, Trongat^, Glasgow, to whomCommunications (post paid) must be addressed. CURLL, PRINTER. THK GLASGOW MECHANICS MAGAZINE, CONDUCTED BY A Committee of Civil Engineers and Practical Mechanics. <* The mind untaughtIs a dark waste where storms and tempests howl:As Phoebus to the world, is science to the soul. No. LXXXVIII. Saturday, 21th August, 1825. Price 3rf. NEW WEIGHING MACHINE, IMPROVED AIR FURNACE, &c. -^ Swan Sc 18 THE GLASGOW NEW WEIGHING MACHINE,Invented by Dixon Vallance, Libbertop, near Carnwath. -J^ssr: Gentlemen,—I beg leave tosend you a drawing of a new sim-ple weighing machine, which shows,by a hand pointing to an index, thetrue weight of whatever is put ijitothe scale. Shopkeepers, by theuse of this machine, will be enabledto serve their customers much more, expeditiously; because, while it isJ equally just as the ordinary plan,* it does not require time to be takenup in putting in and removing theweights; besides, as the weightsare all joined together, none ofthem can ever be lost. In thismachine, the weights, (which areattached to a chain or cord pass-ing over a pulley to the scale inwhich the articles to be weighedare placed,) are jointed together asI have already mentioned, and arelaid upon the top of one another ina box. The handle which pointsto the figures on the index, is fixedto the pulley, which turning round by the ch
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