. Canadian forest industries 1911. Lumbering; Forests and forestry; Forest products; Wood-pulp industry; Wood-using industries. 4° CANADA LUMBERMAN AND WOODWORKER This 1911 Model of the Linderman Automatic Dovetail Glue Jointer. Makes a Tapering Wedge Dovetail Glue Joint A Glue Joint that proved by the technical test made at the Purdue University to be stronger than the flat or " V " joint or the natural wood. Its use then gives the positive assurance of the best results obtainable. TO make a Glue Joint as strong as the natural wood it is necessary for the wood fibre by close contact
. Canadian forest industries 1911. Lumbering; Forests and forestry; Forest products; Wood-pulp industry; Wood-using industries. 4° CANADA LUMBERMAN AND WOODWORKER This 1911 Model of the Linderman Automatic Dovetail Glue Jointer. Makes a Tapering Wedge Dovetail Glue Joint A Glue Joint that proved by the technical test made at the Purdue University to be stronger than the flat or " V " joint or the natural wood. Its use then gives the positive assurance of the best results obtainable. TO make a Glue Joint as strong as the natural wood it is necessary for the wood fibre by close contact and by adhesive to be knit together substantially as well as nature binds its wood cells. Warm lumber—warm glue—and a warm room gives the adhesive an opportunity to enter the pores of the wood—but absolutely perfect and effective pressure the entire length of the joint must be exerted to insure fibre contact—and the escaping of the glue to the surface of the lumber does not necessarily force the glue to enter the pores of the wood. The basic reasons for the extra strength of the Linderman Wedge Dovetail Joint can be stated briefly as follows :— ist. Due to the shape of the joint—50 per cent, to 100 per cent, more glue and fibre surface. 2nd. The close fit of the sides of the dovetail form a pocket for the glue, preventing its escape, while the tongue and groove are gradually progressing to a fit-—forcing, not merely per- mitting, the glue to enter the fibre. 3rd. The rub joint effect—as the tongue and groove wedge "home," that combs the fibre in the same direction, permitting a matted fibre union. Canadian Linderman. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Don Mills, Ont. : Southam Business Publications
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectforestsandforestry
