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Re: Reference: paragraphs 3 and 4 *PIC*

John Schtroumpf
Title: The Mechanic's Companion

Author: Peter Nicholson

Date: 1845

Chapter: JOINERY

§5 The Jack Plane (Pl 12 Fig 1)

¶3 The bringing of the iron to a sharp cutting edge is called sharpening. The cutting edge of the iron must be formed with a convexity, and regulated by the stuff to be wrought, whether it is hard or soft, cross grained or curling, so that a man may be able to perform the most work, or to reduce the substance most, in a given time. To prevent the iron from tearing the wood to cross grained stuff, a cover is used with a reversed basil, (Pl 12 Fig 4) and fastened by means of a screw, the thin part of which slides in a longitudinal slit in the iron, and the head is taken out by a large hole near the upper end of it. The lower edge of the cover is so formed, as to be concentric or parallel to the cutting edge of the iron, and fixed at a small distance above it, and to coincide entirely with the steel face. The basil of the cover must be rounded, and not flat, as that of the iron is. The distance between the cutting edge of the iron, and the edge of the cover, depends altogether on the nature of the stuff. If the stuff is free, the edge of the cover may be set at a considerable distance, because the difficulty of pushing the plane forward becomes greater, as the edge of the cover is nearer the edge of the iron, and the contrary when more remote.

¶4 The convexity of the edge of the iron depends on the texture of the stuff, whether it is free, cross grained, hard or knotty. If the stuff is free, it is evident that a considerable projection may be allowed, as a thicker shaving may be taken: the extreme edges of the iron must never enter the wood, as this not only retards the progress of working, but chokes and prevents the regular discharge of the shavings at the orifice of the plane.

Plate 12:

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Whelan planemaking book?
Re: Whelan planemaking book?
Can't answer about the Whelan book
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Thanks (NM) *NM*
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Re: Whelan planemaking book? *LINK*
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Whelan planemaking book?
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Nice Article!
Re: Nice Article!
Re: Whelan planemaking book?
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Re: Whelan planemaking book?
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Dimensioning: Question about roughing planes
Re: Dimensioning: Question about roughing planes
Re: Dimensioning: Question about roughing planes
Re: Dimensioning: Question about roughing planes
Do you profile your cap irons?
Re: Do you profile your cap irons?
Re: Do you profile your cap irons?
Re: Do you profile your cap irons?
Re: Do you profile your cap irons?
Re: Do you profile your cap irons?
Re: Do you profile your cap irons?
Re: Do you profile your cap irons?
Re: Do you profile your cap irons?
Re: Do you profile your cap irons?
Nicholson
Re: Do you profile your cap irons?
Re: Do you profile your cap irons?
Re: Do you profile your cap irons?
Re: Do you profile your cap irons?
Fun with math
Where did the ball go?
Re: Where did the ball go?
Re: Where did the ball go?
Re: Where did the ball go?
Focussing on the key point
Re: Focussing on the key point
Re: Do you profile your cap irons?
Re: Do you profile your cap irons?
(Message Deleted by Poster)
(Message Deleted by Poster)
Re: Do you profile your cap irons?
Re: Do you profile your cap irons?
No worries *NM*
Reference: Peter Nicholson, 'The Mechanic's Compa
Peter Nicholson plate XII, pages 91 to 93 *NM*
Re: Reference: Peter Nicholson, 'The Mechanic's C
Re: Reference: Peter Nicholson, 'The Mechanic's C
Re: Reference: paragraphs 3 and 4 *PIC*
Re: Reference: paragraphs 3 and 4
Re: Reference: paragraphs 3 and 4
Re: Reference: paragraphs 3 and 4
Errors or suboptimal statements in books
Everybody makes mistakes
Re: Everybody makes mistakes
Things that can be out of date, too
Re: Dimensioning: Question about roughing planes
Re: Whelan planemaking book?
Re: What is the title
Re: What is the title
Thanks Patrick *NM*
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