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Lathe Dog: Two U-Clamps Bolted on the Work (Boy Mechanic, 1915)
A driver for large work where a bought dog would cost too much: two U-clamps bolted together round the work, driven by a bolt set in the lathe faceplate.
Source: The Boy Mechanic, Book 2 (1915), p. 319. Picture: the book's sketch of both forms.
Beginner
Unknown
Instructions
1
1
Clamp on the work
Clamp on the work
Put two U-clamps face to face round the work and draw them tight with two bolts (sketch, right).
Materials for this step:
U-Bolt2 pieces
Hex Bolt - Grade 8.82 piecesTools needed:
Adjustable Spanner2
2
Drive from the faceplate
Drive from the faceplate
Fix a bolt in the faceplate so it bears against the clamp; it turns the work.
Materials for this step:
Hex Bolt - Grade 8.81 driving boltTools needed:
Adjustable SpannerTools Required
1- Placeholder
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