The Pennsylvania magazine, or, American monthly museum . enants pafs quite thro the beams,and receive each of them a wooden-key on the under fide of the beams,which ferve to keep the uprightpieces firm in their refpective pla-CW. Thefe upright pieces, fup- ?*port a triangular wooden axis D jmoving upon two iron gudgeonsE E. On this axis, are fixed anumber of wooden equal lided tri-angles F F F F F F, each trianglehaving a Flail G fixed in a groovein each of its angles, and movingfreely round a pin H. The flailsare fattened with leathern thofe in common ufe. I is a-trundle head, fi
The Pennsylvania magazine, or, American monthly museum . enants pafs quite thro the beams,and receive each of them a wooden-key on the under fide of the beams,which ferve to keep the uprightpieces firm in their refpective pla-CW. Thefe upright pieces, fup- ?*port a triangular wooden axis D jmoving upon two iron gudgeonsE E. On this axis, are fixed anumber of wooden equal lided tri-angles F F F F F F, each trianglehaving a Flail G fixed in a groovein each of its angles, and movingfreely round a pin H. The flailsare fattened with leathern thofe in common ufe. I is a-trundle head, fixed upon the tri-angluar axis, D, which is turn-ed by K a cog-wheel, and givesmotion to the whole machine bymeans of a winch L. Figure 2. M reprefents one of Ithe triangular pieces, detached- ;ifrom the axis, with the flail N fix-ed in it. When the machine is notin ufc, the wooden keys under thefloor-beams may l>c taken out, andthe whole machine taken afunderand laid afide. In the prefent Plate, fix of thefetriangles, each containing three flaili,. Intertfting Qjieries en BlozJ-h-tting. flails, arc represented; fo that eachrevolution of the axio mult produceeighteen ftrokes of the riaiL. The trundle head has eight round:., andthe cog-wheel thirty-two COg-whed in one revolutionwill caule the trundle head to per-form lour revolutions; ; that eve-ry turn of the winch will produce(eventy-two ttrokes from the flail*.It is imagined, that one man work, this machine, and ano-ther fupply it with grain to betbicmed.— If fo, it finely will be an expeditious and ealy way to ten- deficiency. To take away blood whenjler the threihing of grain cheaper the quality U morbid, ana the quantity DOt lob , iuilcad of removing tutdifordci sailing trom die morbid quwill intioduce tlic caule of then, dilordl tiee may be attended with uics* ;..-. .ricion El . ? SOW E argue lhat Llood-lctiing u al-ways pernicious, except th<- quantitfo. in tiic patient fupc
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Keywords: ., bookcentury1700, bookdecade1770, bookidpennsylvania, bookyear1775
