File:Canadian forest industries 1916 (1916) (20502880756).jpg

Title: Canadian forest industries 1916
Identifier: canadianforest1916donm (find matches)
Year: 1916 (1910s)
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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CANADA LUMBERMAN AND WOODWORKER October 1, 1916 The Band Mill and Saw When the bandmill and carriage track are in correct alignment the saw should be carefully inspected to see that everything is in good shape. Tension in the saw is supposed to be of the greatest importance, but in fifteen years' experience in filing saws for fast mills that cut both hard and soft woods tension is shown to be only one of the things that must be looked after carefully. There are as many ways of running tension as there are filers, but the following method will allow the bandsaw to stand up to the greatest rate of feed and at the same time prevent cracks. Extreme tension is as bad as low tension and to find out how deep to go in the case of 12-ihch saws see that the saw is perfectly levelled and tension from edge with a 45-foot circle gauge, making the curve fit snugly when the gauge is held square with the saw on pressing it down. Then roll or stretch the entire saw lightly on both edges to release the strain on the extreme edges as this treatment will push back the strain line an inch and prevent cracking. Then run the saw for a few days until either the centre, quarters or edges develop bright lines or spots from "riding." These spots can be easily detected by holding the saw at such an angle as to allow the light to shine directly upon the blade. If riding develops after putting in tension with a 45-foot circle gauge go deeper with either a 40 or 36-foot circle gauge and if bright spots still appear after run-
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ning use a 32-circle gauge. If bright spots still develop more than 1 inch from the edges the band wheels need refacing or grinding per- fectly flat. When the bright lines disappear from the centre and quarters and only show 1 inch from the edges the correct tension for the mill has been secured. Badly worn wheels require more tension than flat ones. In fact, the centre or quarters of a saw should never come in contact with the face of the bandwheels, for when the saw is fitted by the method recommended the saw is air cushioned and sustains the strain only on the edges, making it impossible for the saw to snake or cut bad lumber. The shape of the saw teeth and the swage have a great deal to do with the proper running of the saw. The sawdust must be expelled when it is cut out of the timber and to do this the gullets must be as round as possible. Sketch A shows a very successfully shaped saw tooth for hardwoods and mixed woods- B is similar to A but with only l^-inch space, which is especially good for all species of pine. C shows a tooth ruined by the filer grinding back into the swaged-point harder than grinding down on the back of the tooth. D is an ideal tooth for the resaw. E will give especially good service when the resaw is sawing oak. F is a good pine swage point., G shows a type of side cutter. H is the best swage point for hardwood. I illustrates a method of crowning a saw back that should be avoided. J shows the proper manner of crowning a band saw. Avoid extreme crown in the saw, as just enough is needed to overcome the slight stretch of the cutting edge. For a 12-inch 14 gauge bandsaw about 1/32-inch for every five feet is enough for most mills.—R. C. Leibe, in The American Lumberman. First Aid Principles Compiled by Dr. W. N. Lipscomb, Field Representative, American Red Cross 1. The best way to treat any injury is to prevent it. 2. The best test of any man is his ability to meet any emergency— remember this in accident cases. 3. First aid work merely means applied common-sense based on a little extra knowledge. 4. The fate of an injured man depends upon the individual into whose hands he first falls. 5. The man afraid to apply first aid, knowing how, is a coward; the man who calls it "hot air" is dangerously ignorant; the man who does the right thing at the right time is the real man. 6. The blind rush to a hospital without first attempting relief is insanity—patients have died on the way from loss of blood and shock. 7. Seventy-eight out of every hundred cases of infection or "blood- poisoning" begin in the hand—remember this when you get an injury there. 8. Do not drill a black finger-nail with a knife—it may cause a whit- low or bone-felon. 9. The little wounds are dangerous—often more so than the large ones—give them immediate and careful attention. 10. Do not "wash out" any wound with water—it merely drives the "germs" deeper in. 11. A man spent 368 days in a hospital in the State of Washington because he let another man pick a splinter out of his hand with a pocket-knife—will you be the next to contract such a case of general "blood-poisoning" ? 12. If you have nothing surgically clean to put on a wound, leave it exposed to the open air—it is safer. 13. Keep your hands, clothes and handkerchiefs out of a wound— it is dangerous to so tamper with them. 14. Keep cotton out of wounds and burns—do not force a surgeon to "pick the goose alive." 15. A man's eye is a delicate piece of machinery—keep sharp tools out and avoid the dirty ones. 16. In treating fractures (broken bones) anywhere, first cut away clothing—there is often a wound present. 17. Many a simple fracture has become compound from hasty or rough handling; a man who has a fracture is likely to have an open wound through the protruding of sharp end of bone if mis- handled. IS. Properly splint or immobilize a patient's limb when broken, be- fore moving him. It may save many months in the hospital and a possible bad result. 19. Never move a man with a broken limb before you see that it is placed in well padded and comfortable splints. 20. If in doubt whether break exists anywhere, fix as such—this treatment cannot do harm ; it may help greatly. 21. Prevent a man from walking on a sprained ankle—one or more bones in the foot may be broken. 22. Elevating injured arms and legs in case of accident means in- creased comfort for the patient, especially in even of crushed injuries. 23. The coat makes a good sling—hold injured arm horizontally across chest—fold coat over arm and secure the corner near the neck with a pin or nail. Also pin behind to steady arm against shoulder. 24. In making an emergency stretcher, first try it out with an unin- jured patient—it may prevent serious consequences. 25. Walk slowly with patient feet foremost on a stretcher—why need- lessly shake him up. 26. In applying a tourniquet or "twister" be sure to loosen gently about every twenty minutes—this is an absolute rule for com- fort and safety. 27. The tourniquet is "a good servant, but a bad master"—be sure that you apply it correctly, and use something broad, not wire or rope. 28. Keep an injured man's head low, loosen clothing, look for external injuries, keep him warm, but yourself cool, handle as little and 'as gently as possible. 29. Lowering a patient's head in a case of fainting is the first and main essential in treatment. 30. To deal with an epileptic fit—prevent person from falling, place a stick or handkerchief between teeth, then observe "watchful waiting."

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