L: 40.5cm W: 6.8cm H: 14.2cm
a- L: 40.5cm W: 6.8cm H: 14.2cm
b- L: 12.1cm W: 5.5cm H: 1.6cm
c- L: 16.9cm W: 5.6cm H: 0.5cm
d- L: 13.1m W: 5.6cm H: 0.6cm
e- L: 1.8cm Diam: 1.6cm
A wooden jack plane consisting of 5 parts.
a- The body is a rectangular prism made of dark brown hardwood. The back third of the body is recessed. A curved handle sits on this back portion. A wide throat cuts through the body just ahead of this recess. The sole is flat. A stamp on the toe reads "GEO.ALLAN/WARRINGTON".
b- The wedge is wide-set and made of the same hardwood as the body. The top edge is beveled. The bottom edge is slightly tapered and splits into two thin prongs.
c- The primary cutting iron is a rectangular strip of grey metal. The top corners are rounded and the bottom edge is flat. There is a keyhole in the centre to accommodate the secondary iron (d) and the screw (e). A stamp reads "SP(EAR)&JACKSON/S*J/(E)X(TRA) CAS(T) (STEEL)/WARRANT(ED)".
d- The secondary iron is a rectangular strip of grey metal. It is shorter than (c). The top corners are chamfered and the bottom edge is flat. There is a hole in the middle to accommodate the screw (e). There is a stamp that reads "(S)PEAR&JACKS/(S)CLID-NUT".
e- A metal slotted screw. It has 6 threads in total.
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.
