. c Fig. 19. the struts, EE. It will be quite evident from a glance at the draw-ing, that the door-posts help to sustain the braces and struts; whilethey in return prevent the fall of the door-posts. Braces may beintroduced in various ways, but strength is the object for whichthey ought to be introduced, a circumstance which is very fre-quently entirely forgotten by carpenters. In some instances, itmay be found desirable to introduce a simple truss into a designfor partitions. The carpenter usually connects his timbers either by notc
. c Fig. 19. the struts, EE. It will be quite evident from a glance at the draw-ing, that the door-posts help to sustain the braces and struts; whilethey in return prevent the fall of the door-posts. Braces may beintroduced in various ways, but strength is the object for whichthey ought to be introduced, a circumstance which is very fre-quently entirely forgotten by carpenters. In some instances, itmay be found desirable to introduce a simple truss into a designfor partitions. The carpenter usually connects his timbers either by notching, orby mortice and tenon. Dovetail joints are sometimes used in car-pentry, but they ought never to be adopted, for they will alwaysdraw when the timber shrinks, and the oblique surface of thedovetail tends to force the timbers apart, acting as though it werea wedge. Gluing general, nothing more is necessary to glue a joint, after thejoint is made perfectly straight, or, in technical terms, out ofwinding, than to glue both edges Avhile the glue
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Keywords: ., bookcentury1800, bookdecade1850, booksubjectenginee, bookyear1856
