File:Canadian forest industries 1894-1896 (1896) (20336692828).jpg

Title: Canadian forest industries 1894-1896
Identifier: canadianforest189496donm (find matches)
Year: 1896 (1890s)
Authors:
Subjects: Lumbering; Forests and forestry; Forest products; Wood-pulp industry; Wood-using industries
Publisher: Don Mills, Ont. : Southam Business Publications
Contributing Library: Fisher - University of Toronto
Digitizing Sponsor: University of Toronto

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Combined Planing and Moulding Machine. The pressure apparatus is arranged so as to hold the stuff down firmly to the table close to all the cutter- blocks, thus preventing any vibration in the piece when under the cutters. An advantage in these machines is the great facility with which the cutters can be adjusted, and as a large proportion of the time of a moulding machine is necessarily lost in setting the cutters, any arrangements which will facilitate this operation are of value. The low cutter-block is fitted into a planed iron drawer, which can be drawn out when it is required to adjust or change the cutters ; and the side cutters are provided with a ready means of vertical adjustment. PACKING. IT is often the case in planing mill and saw mill prac- tice, says a writer in an exchange, that one has an engine, a pump or steam cylinder of some kind that gives a great deal of trouble, by leaking at the stuffing box or by cutting out the packing. This has been a great deal of trouble to me at times innumerable. 1 say " has been," because I don't think it is a subject that will bother me any more, and as the remedy is simple and easy of application, it may help out some other mill man who cannot keep his piston from leaking, either for want of good or proper packing, or from a scored rod, or from some cause he can not at once remedy. Now, I expect some engineer will rush in to offer some objection, but I have been using this packing for holds out. If you conclude to try it, don't forget to make the rings an easy fit, break joints and screw up lightly at first. I heard an engineer say a few days ago that ninety per cent, of the ills that engines suffer from result from improper lubrication. IMPROVEMENTS IN WOOD-WORKING MACHINERY. IN an age when the inventive genius is abroad it is to be expected that marked progress would be made in the realm of wood-working machinery since the days of the crude planing machine invented in 1879 by Sir Samuel Bentham. Samuel Bentham was a brother of the famous English political economist, Jeremy Ben- tham. The latter was interested in the study of in- dustrial prisons in England, and the talents of Sir Samuel were used to devise machines that would enable the government to secure a profit from the labor of convicts. In a treatise on wood-working machinery, of ancient date, the complete list of Benthams's inventions is given as follows : Machines for planing and forming mouldings, im- proved planing and moulding machinery (rotary), wedg- ing guard for circular saws, segmental circular saw, con- ical cutter for dovetail grooves, undulating carriage to form wave mouldings, compound cutter heads to work two or more sides at once, the slide rest, tubular boring implements, crown saws, reciprocating mortise machine, rotary mortising machine, radius arm for sawing seg- Sash and Moulding Machine of 1856. screws, double grooving saws, and rach feed for planing machines. From that day forwaid there has been a steady and continuous improvement in all the various machines that find a place in wood-working establishments. This pro- gress continues, and within the past 50 years it has been most noticeable. Whilst from Ben- tham, an Englishman, came the incentive to better wood-working machinery, yet the larger developments of later years have doubtlesss been from the inventors of the newer continent. The trend of the age towards machinery that would lessen la- bor, and would add to a more ready pro- duction of stock, manifest in every depart- _J; ment of mechanics, has been none the less '*~ so in wood-working. The wood-worker of to-day does not find it nearly so necessary to equip himself with a great stack of hand-tools, as did his predecessors. True the chisel and hammer and screw driver are still necessary articles of the carpen- ter's kit, yet in all our wood-working es- tablishments machinery, driven by steam, or that more recent force of the day, electricity, is fast taking the place of many individual hand tools. The cut of a sash and moulding ma- chine of 1856, which we have given above, will illustrate, in a measure, as compared with the machinery of the present day, the progress that has been made in wood-work- ing machinery in at least one direction. PROTECTION FROM ACCIDENTS. THIS device is an English invention and relates to a guard or cover for preventing accidents from ma- chinery. The invention is shown in Fig. 1 applied to a surfacing and edging wood-working machine with re- volving cutters. In Figs. 2 and 3 the guard is shown
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separately. The protecting bar E can be raised or lowered by sliding" the slotted bar B up or down and clamping it in position by the set screw C. The bar £ may be Adjusted horizontally by sliding on the boss E Sid fixing by the set sciew F. When rt is desired on occasions to turn the guard aside, the vertical bar B is made circular and fits in a circular socket.

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