One great convenience of this method is that if the pattern gets lost, broken or worn out it is only necessary to get out the master pattern, make a casting from it, and file it ... The big main core is a simple cylinder, with a round print on the lower end, slightly tapered. ... The valve guide prints, being of only seven-eighth inch in diameter by ia#39;/2 inches long, can be turned from stock, no gluing 1agt;eing necessary.
|Title||:||The Horseless Age|