Chapter

We pride ourselves on being logical, and then, time after time, we fail to follow a technological advance to its logical conclusion. A fairly good example of this was the early development of the automobile. Remember those photographs of the first cars They took the surrey with the fringe on top, got old Dobbin off the front of it, cut him down in size and put him on the inside, leaving the remainder of the carriage just about as it had been before. They even...

Doubleshouldered butt joint

Rehated And Shoulderd Butt Joint

The next joint is not frequently used. It is a further variation of the shoulder butt, and could be defined as a double-shouldered butt. Fig. 611 . The ends of both pieces to be joined are notched and are butted together with the notches interlocked. This joint has more strength than a normal shoulder butt since the pieces being joined bear against each other on three surfaces. However, it is not as popular as it might be, possibly because the notches in both pieces must be very accurate to...