1851 Great Exhibition: Official Catalogue: Class VI.: Alexander Dalgety
226. DALGETY, ALEXANDER, Deptford — Inventor and Manufacturer.
Self-acting and surfacing lathe, with set of eighteen gun-metal change wheels, for screw cutting, from three threads in a foot, to 95 in an inch.
Self-adjusting chuck, with three jaws always working parallel to each other, for fixing any sized wire perfectly central, from the smallest needle to a bar I inch in diameter; particularly adapted for holding drills of various sizes, and making small screws.
Self-adjusting boring collar, for supporting various sized bars or tubes, from 0.125 to 2.5 inches in diameter.
Self-adjusting face chuck, for holding circular flat surfaces from 0.375 to 7 inches diameter.