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English Planes


   
 

Making and Using Handtools


 
  The Pattern Maker's Assistant by Joshua Rose, 1878    

Preface

The object of this book is to impart a knowledge of Pattern Making that shall be useful to apprentice Pattern Makers, and also to practical machinists, because the drawings of the designer do not as a rule give any instructions as to the construction of the patterns, while at the same time that construction may affect to a considerable degree, the manipulations of the machinist.

Furthermore, it often occurs in the experience of a general machinist, that he is required to make a pattern either in iron or wood, and the complete isolation which usually exists between the pattern shop and the machine shop, is an effective bar to the acquisition of knowledge by observation.

The information is given from actual pattern shop practice, and in the ordinary workshop parlance.

The tables have been selected with a view to a collection comprising all that the Pattern Maker of the widest experience requires; arranged for his convenience, although in as compact a form as possible.

Those savants who have read our old earth's unwritten history in and from its strata, tell us that, in ages far remote, men made tools and contrivances of bronze, which, being an alloy, necessitated the fusion and casting of the metal.

 

This casting involves the use of patterns, and pattern making may therefore lay claim to the highest antiquity.

But the modern idea of the division of labor has exalted it to be a distinctive art; in the last generation, for instance, a good machinist (or rather engineer or millwright, for those terms were then applied to builders of machinery,) was required to be alike expert in working upon both wood and metal.

He constructed his framing of wood, and made the patterns for his cast metal work; he was to-day a lathe hand, tomorrow a vise hand.

As, however, the present age of iron dawned, it became apparent that working in wood and in metal must be separated, not only because the handiwork could be more cheaply produced by reason of the increased skill arising from continuous practice, but also because the amount of knowledge required to make an artisan skillful in either the manufacture of wood or of iron, was too great to be thoroughly mastered in the working lifetime of an ordinary, or even an unusually expert workman.


 
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