L: 42.7cm W: 7.2cm H: 17.7cm
a- L: 42.7cm W:7.2cm H: 17.7cm
b- L: 14.5cm W: 5.7cm H: 1.7cm
c- L: 14.5cm W: 5.6cm H: 0.3cm
d- L: 12.0cm W: 5.7cm H: 1.3cm
A wooden jack plane consisting of 4 parts.
a- The body is a rectangular prism made of light brown hardwood. A curved handle sits on top of the body near the heel end. A wide throat cuts diagonally through the body at about 1/3 of the length from the toe end. Stamps on the toe read: "MASTER"; "AM"; "1940"; "I BLOWER"; "A.I.D./E.B.3"; and a stylized "M/W". Stamps on the heel read: "I BLOWER"; "2 1/4"". A stamp on the top of the body near the toe reads "GUARANTEED ENGLISH BEECH".
b- The wedge is made of a hardwood similar to the body. It is wide-set and tapers to a chisel edge on one end. Two thin prongs extend from the exterior edges on this end. Two wider prongs sit inside these and taper at a sharper angle. The other end is squared with rounded corners.
c- The first cutting iron is a wide rectangular strip of ferrous metal. The top corners are deeply chamfered. A keyhole-shaped cut-out sits in the bottom-centre. The bottom edge tapers to a chisel edge. The top of the iron shows a faded maker's mark along with an illegible inscription ( ??NT B?E??/????????).
d- The second cutting iron is a wide rectangular strip of ferrous metal. The top corners are chamfered. The bottom edge tapers to a chisel edge and is slightly curved inward. A ferrous screw goes through the centre of the iron and interlocks with the keyhole structure of (c).
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.
