Agriculture Reference
In-Depth Information
appropriately profiled large moulding box, and then cut and rubbed to shape
using the wire-bladed bow saw, and finished with chisels, files, and other rele-
vant abrasives. Sometimes niche heads were built inside the cutting-shed, also
some flat or camber arches were bench-constructed, in whole or part, by this
method for placing into the opening on-site (Mitchell and Mitchell, 1906, 71):
The voussoirs are jointed together on the surfacing slate, either into the com-
plete arch or into convenient sections the back of the joints being grouted with
Portland cement. In setting the arch it can be placed en bloc on the turning
piece and between the skewbacks prepared to receive it, or if large, the various
sections are jointed together on the turning piece, in which case the exact posi-
tion of each brick must be marked thereon.
This block or lump method was also used to cut and shape, by turning in a
box (as if on a lathe) bonded gauged vases for use on classical gables and pedi-
ments. It was a method also employed to shape the block into a sphere or
globe to a pier capping. A good example of this is on the gated rear entrance
to Emmanuel College, Parker Street (Cambridge) (1894), designed by the
architect J.L. Pearson (1817-97) seen in Fig. 137.
Figure 137
Gauged pier capping
with globe, Emmanuel
College, Cambridge
(Cambridgeshire), 1894.
