Saws: The History, Development, Action, Classification, and Comparison of Saws of All Kinds, with Copious Appendices, Giving the Details of Manufacture, Filing, Setting, Swaging, Gumming, &c.; Care and Use of Saws; Tables of Gauges; Capacities of Saw Mills; Lists of Saw Patents; and Other Valuable Informations

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E. Claxton & Company, 1882 - Saws - 279 pages
 

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Page 159 - A Supplement to the above; containing additional practical matter, more especially relating to the forms of Saw Teeth for special material and conditions, and to the behaviour of Saws under particular conditions. With 120 illustrations, cloth, gs.
Page 142 - Each sized log has been scaled so as to make all that can be practically sawed out of it, if economically sawed, each log to be measured at the top or small end, inside of the bark, and if not round, to be measured two ways, at right angles, and the difference taken for the diameter. Where there are any known defects, the amount deducted should be agreed upon by the buyer and seller, and no fractions of an inch to be taken into the measurement.
Page 121 - The index shows the pitch at which the file is set, and a rod passes through holes in the graduated ring, and guides the file. The frame upon which the ring is held slides in grooves cut on each side of the vice in which the saw is fixed; a table connected with the guide is arranged and indexed, so as to give the required bevel and pitch for the kind of saw to be filed, and it is only necessary to set the ring for the bevel and the indicator for the pitch, and the apparatus is ready for use. As the...
Page 20 - Muhlsage, mill-Haw) comes under the head of blades guided at both ends but unstrained. It has a pull cut and very rapid cutting speed, exceeding; in this respect the sash saw, which by reason of the inertia of the frame is more limited in speed. Its use is mainly in the Western States of America ; and it is in its inception essentially bold and American. There being but little of the blade exposed unguided, its use at high speed is, however, quite safe. The mulay saw for logs is generally 10...
Page 260 - England for several years, or rather generations; but in 1768, an unlucky timbermerchant, hoping that after so long a time the public would be less watchful of its own interests, made a rash attempt to construct another mill. The guardians of the public welfare, however, were on the alert, and a conscientious mob at once collected and pulled the mill to pieces.
Page 260 - The old practice in making boards was to split up the logs with wedges ; and inconvenient as the practice was, it was no easy matter to persuade the world that the thing could be done in any better way. Saw-mills were first used in Europe in the...
Page 143 - In this table we have varied the size of the slab in proportion to the size of the log, and have arranged it more particularly for large logs, by taking them in sections of 12 feet and carrying the table up to 96 inches in diameter.
Page 142 - Each sized log has been scaled, so as to make all that can be practically sawed out of it, if economically sawed. Each log to be measured at the top or small end, inside of the bark, and, if not round, to be measured two ways — at right angles — and the difference taken for the diameter.
Page 92 - ... called a file quite as appropriately as a saw, and its action on a bone is said to be more like that of the first-mentioned tool, in the absence of such rough edges as are made by the saw in common use. No needle is required to carry it through or around the bone, and its beads can be readily strung on a new wire in case of a break.
Page 66 - Inscrted-toofhcd circular sairs, the use of which is already large and rapidly extending, have the following advantages over solid : The teeth being drop-forged, from bar steel, are regular in size and shape, and of better material than is possible to use for the whole saw. The teeth are capable of having more and better-shaped throat — a special advantage for coarse feeds, and for soft, wet and fibrous "woods. They cut so much smoother lumber that they are frequently spoken of as

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