1851 Great Exhibition: Official Catalogue: Class IX.: John James and Co
From Graces Guide
86. JAMES, JOHN and CO., 24 Leadenhall Street — Manufacturers.
Patent weighing machine, without loose weights; the weights by which the goods are weighed, being attached to, and forming part of the machine itself.
Three ton machine, or small patent weigh-bridge, for weighing carts, live cattle, and farm produce generally.
Six hundred-weight patent machine, for weighing sheep, pigs, etc.
Three hundred-weight machine, for weighing sacks of corn, etc.
Machine for weighing potatoes, turnips and other root-crops in the field.