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1873 article - Lombard's Ring-Saw Machine |
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April 1873 Manufacturer & Builder |
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3/3/2018 9:43:25 AM |
Article text:
We lay before our readers in the accompanying illustration a novel and ingenious form of saw of which the blade is constructed in the form of a ring. It is designed for use in chair and furniture shops, and is capable of performing all kids of scroll-sawing. The machine is strongly and durably made, and the general simple arrangement of working parts is well shown in the engraving. The inside of the saw fits into a groove on the driver, so that the blade is rotated through the friction of the parts. The heavier the work the greater becomes the friction and the tighter the saw is held. On the opposite end of the driving-shaft from the friction-wheel are two pulleys, tight and loose, designed to receive a 24-inch belt, by which the shaft is rotated at the rate of 1,700 turn per minute.
We are informed that the machine is capable of sawing a circle one half inch in diameter, or even smaller, and that there is no possibility of the saw coming off, even when_cutting the sharpest curves or when backing out. The apparatus has now been in use some two years, and has successfully operated upon stuff varying from ½ to 6 inches in thickness. The saw is speeded so as to give nearly 4,000 feet of cut per minute, and can be used with or without set—in the latter case cutting smooth enough for a finish. The blade is made beveled, or thinner back of the teeth, and can be from ¼ to 1 inch in width, so as to be employed for the finest jig and scroll-sawing. It is claimed that ordinary hand-saw work can be done on this machine with much less danger to the operator, and less labor and expense in keeping the implement in repair, and at a saving of from 25 to 100 per cent. A number of testimonials are before us from well-known manufacturers, all of which refer to the apparatus in highly laudatory terms. We have no doubt but that the machine is worthy of careful examination from all wood-workers. Power seems to be well economized, and its general efficiency is fully guaranteed by the satisfaction it has given to those using it. More detailed information can be obtained from the manufacturers, Messrs. Goodspeed & Wyman, Winchendon, Mass. |
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