Handy man's workshop and laboratory . the rear hub, 7,is bolted a large gear wheel, 8, meshing with a pinion, 9, on thefront hub, 4, which also carries another large gear, 10, meshinginto another gear, 11, fastened to crankshaft, 6. The latter gearcarries a wrist pin, 12, and is connected to the lower arm, 13, ofthe saw frame by means of a pitman, 14. One of the flanges of HANDY MAN S WORKSHOP AND LABORATORY 43 the front hub, 4, is cut off, and the gears 9 and 10 are slippedon and soldered fast to the barrel of the hub. The gear trainfrom the sprocket chain to the saw frame is shown in Fig. 48
Handy man's workshop and laboratory . the rear hub, 7,is bolted a large gear wheel, 8, meshing with a pinion, 9, on thefront hub, 4, which also carries another large gear, 10, meshinginto another gear, 11, fastened to crankshaft, 6. The latter gearcarries a wrist pin, 12, and is connected to the lower arm, 13, ofthe saw frame by means of a pitman, 14. One of the flanges of HANDY MAN S WORKSHOP AND LABORATORY 43 the front hub, 4, is cut off, and the gears 9 and 10 are slippedon and soldered fast to the barrel of the hub. The gear trainfrom the sprocket chain to the saw frame is shown in Fig. the opposite end of crankshaft 6 is fastened a small flywheel,15, with a handle, 16; its purpose to be explained later. It isnow evident that when the operator works the pedals the crank-shaft 18 will revolve and the saw-carrying arms, 13 and 13a,owing to their connection therewith will be moved up and arms 13 and 13a are made of hard wood, such as maple orhickory. They are fulcrumed at the rear end of the table and are. Fig. 48—Gear train from sprocket chain to saw frame provided with suitable fastenings at their forward ends to receivethe saw blade, while their rear ends are connected by a suitableturnbuckle to regulate the tension of <the saw blade. To the armsare bolted small brackets, 21 (see Fig. 49), made of sheet steelabout % inch thick, which have at their outer ends small half-round recesses, 22, made by a very blunt chisel on top of a pieceof hard endwood. To the rear end of the table is fastened a short block of wood,23, say 8 inches long, and on-this block is fastened a small steelplate, 24, with projecting ends, 25, which fit into the recesses, 22,of the brackets, 21, on which the arms 13 and 13a rock. In closeproximity to this plate is an iron rod passing through said armsriveted at each end, with a leather washer between, which serves 44 HANDY MAN S WORKSHOP AND LABORATORY
Size: 2556px × 978px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., book, bookcentury1900, bookdecade1910, booksubjectworkshoprecipes
