File:Canadian forest industries 1909 (1909) (20338711039).jpg

Title: Canadian forest industries 1909
Identifier: canadianforest1909donm (find matches)
Year: 1909 (1900s)
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

View Book Page: Book Viewer
About This Book: Catalog Entry
View All Images: All Images From Book
Click here to view book online to see this illustration in context in a browseable online version of this book.

Text Appearing Before Image:
THE WOODWORKER A Solution of the " Stickermans Problem." The "Problem for the Stickerman," which appeared in the "Canada Lumberman and Woodworker" of June 15th, appeared simple enough on a casual consideration, but contained elements which required more than a passing thought. A concise and well worked out treatment of the matter is submitted by Nap. J. Millette, St. Johns, Que. Mr. Millette is to be commended for so interesting a treatment of the subject, and his ideas will be read with interest by stickermen. The "Canada Lum- berman and Woodworker" would like to have the opinions of other readers on the same subject, or on other subjects of interest. Mr. Mil- lette's communication is as follows: Editor "Canada Lumberman":—You are investigating a very im- portant point of interest for millmen, with your article, entitled: "A Problem for the Stickerman," published in the "Canada Lumberman" of June 15th, 1909. If I had to answer your question briefly, I would say "No." The right angle with same, and to cutter line, on true circle from oentre of head. Then at any desired point, at a right angle with cutter line, the ends of these two lines are squared out, forming part of fig. 3. All inter- mediate lines are extended out, following the same process. To complete, fig. 3, space the size of fillet at all points from 11 to 19 as designated at fig. 2, and mark out same at corresponding points on fig. 3. By (racing a line touching these points we have the true cutting edge of cutter to perform fillet as at fig. 2. Fig. 4 can be made any desired shape to suit the operation, fol- lowing the cutting edge. In taking close notice of cutter line between figs. 3 and 4, we find that this line is slightly curved. The cause of this is the'fact that the closer we work to the head, the more the cutter is slanting, changing the working angle at every degree of revolution. Therefore, if we require a curved edge cutter to perform straight work, we can plainly see that we cannot fit two cutters made to produce reverse shaped moulding. V 'Z 13 /-y /j /(, ,y ,^
Text Appearing After Image:
.me, Sketch No. i Sketch No. 2. reason of this is quite difficult to explain, however, I will try to do so as clearly as possible. If the face of the cutter was straight and at right angles with the tangent of a circle described by the head when running, the cutter would be exactly the reverse shape of the moulding, and therefore could fit a cutter made to produce a moulding of reverse shape. But, as sticker heads are all made to have cutters work on angles of various pitches (ac- cording to design), requiring a longer cutter to operate, than the thick- ness of the stock to be operated, the surplus length of the cutter is un- evenly crowded in its whole length, according to the angle at which it in held in revolving on its centre, when passing the thickness of the stock. _ To illustrate the "unevenness" of the crowding, I submit a sketch of plain straight work. Sketch No. 1—Fig. 1 represents a cross-section of an ordinary four- sided sticker head. Fig. 2 represents a fillet, having three sides straight. Fig. 3 represents a lay-out, of fig. 2, made the whole length of the cutter, having same width at intermediate points. Fig. 4 represents a portion of what should be the cutter, made to perform fillet as shown at fig. 2, dotted line at edge next to fig. 3 shows curved working side. Referring to fig. 2, sketch No. 1, let lines 1 and 9 represent the full height of the fillet, divided by intermediate lines 2, 3, 4, 5, fi, 7, 8, which are used to determine the different points referred to, at which the cutter reaches the stock when operating. Extend extreme lines 1 and 9 on fillet, fig. 2, to working line at a Sketch No. 2 shows a mode of laying out moulding cutters which I have found to be satisfactory. It is very simple in itself and I believe that every stickerman could master this problem at once. If any points of this correspondence would need further explanation I would be only too pleased to give further information. Necessity for Guards on Dangerous Machines. Factory Inspector Fred Kellond in his annual report to the Ontario Government says: "Modern industry is becoming increasingly more dangerous, and in the many varied processes involved many cases of accident, resulting m the injury, sometimes in the death of the employee, inevitably occur. The utmost precautions on the part of both employer and employee might reduce the number of accidents, though one can never hope to en- tirely stop them; but every effort should be made to decrease the num- ber and to reduce the possibility of injury. "The guarding of machinery and dangerous places forms a very important part of an inspector's duties. I have been able during the past year to have a large number of guards put on different machines as well as have dangerous places, such as holes in floors, drive belts, etc ward- ed. I have experienced very little difficulty in having my wishes carried out, especmlly after the second visit. I say second visit, for perhaps in this connection, if in no other, frequent inspection is fruitful of <r00d re- sults. In previous years the small number of inspectors in the province

Note About Images