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THE CIVIL ENGINEER AND ARCHITECT'S JOURNAL. 



FAIRBAIRN'S RIVETING MACHINE.— Elevation and Plan. 



[April, 



■which it can be moved on rails, to suit the article suspended from the 

 shears. The introduction of the knee joint is also a very important 

 improvement, as it gives to the dies a variable motion, and causes the 

 greatest force to be exerted at the proper time, viz., at the closing of 

 lie joint and the finishing of the head of the rivet. 



In other respects the Machine operates as before, effecting by an 

 almost instantaneous pressure what is performed in the ordinary mode 



by a long series of impacts. The machine fixes in the firmest manner, 

 and completes eight rivets of 2-inch diameter in a minute, with the 

 attendance of two men and two boys to the plates and rivets; whereas, 

 the average work that can be done by two riveters, with one " holder 

 on," and a boy, is forty 1-inch rivets per hour; the quantity done in 

 the two cases being in the proportion of 40 to 480, or as 1 to 12, ex- 

 clusive of the saving of one man's labour. 



