2003-05.13
Object Name
Plane, Jack
Artist/Maker
Spear & Jackson
Materials
Wood --Metal
Catalogue Number
2003-05.13
Dimensions

L: 41.5cm W: 7.1cm H: 14.0cm
a- L: 41.5cm W: 7.1cm H: 14.0cm
b- L: 12.4cm W: 5.9cm H: 1.6cm
c- L: 18.4cm W: 5.5cm H: 0.7cm

Description

A wooden jack plane consisting of 3 parts.
a- The body is a rectangular prism made of a dark brown hardwood. The back 1/3 of the body is lower than the rest. A large curved handle sits on this lower portion. A wide throat cuts diagonally through the body just ahead of the division. The sole is flat.
b- The wedge is wide-set and made of the same hardwood as the body. It tapers toward the bottom then splits into 2 prongs.
c- The iron consists of a primary and secondary iron secured together by a screw. The primary iron is a metal rectangle with chamfered top corners. The bottom edge is flat and sharp. A stamp on the iron reads "SPEAR & JACKSON/S*J/WARRANTED/CAST STEEL".

History

Jack planes are large smoothing planes, often used for preliminary smoothing of wood edges. A more precise tool will be used to finish the piece. This plane’s double irons are slightly convexed to avoid marking the edges of the cut. Jack planes are usually 12-18 inches long, but can be found up to 30 inches.