Drawn up for this Work by Rowland Prosser, Esq., C.E., of Birmingham.

Drawbench introduced into England 1565.

Benj. Cook.

James and Jones.

Henry Osborn.

Henry Osborn.

James Russell.

Cornelius Whitehouse.

Georgo Royl.

Harvey and Brown.

T. H. Russell.

Richard Prossor.

Job Cutler.

Russell and Whitehouse

Rolls invented for rolling iron by Cort 1783.

Drawbench and Rolls used for making lead pipes by Wilkinson 1790.

Combination of 2, 3 or more pairs of rolls by Hayledine 1798.

Dates of Patents

1808

1812

1812

1817

1824

1825

1831

1836

1836

1840

1841

1842

Synoptical Table Of The Manufacture Of Iron Tubes 200274

WELDING BY

Hand hammers

1808

..

..

..

..

..

..

..

..

..

..

..

Synoptical Table Of The Manufacture Of Iron Tubes 200275

Power hammers

..

1812

1812

. .

1824

..

..

..

..

..

..

..

Synoptical Table Of The Manufacture Of Iron Tubes 200276

Many holes in two rolls .

..

1812

..

1817

..

..

1831

..

..

..

..

..

Synoptical Table Of The Manufacture Of Iron Tubes 200277

Many holes in two rolls alternating . .

..

1812

..

..

..

..

..

..

..

..

..

..

Synoptical Table Of The Manufacture Of Iron Tubes 200278

Segment moving on a bed

..

..

1812

..

..

..

..

..

..

..

..

..

Synoptical Table Of The Manufacture Of Iron Tubes 200279

Three or four rolls mak- ing one hole . .

..

..

..

..

..

..

..

..

..

1840

..

..

Synoptical Table Of The Manufacture Of Iron Tubes 200280

Drawing through holes or tongs . . .

..

..

..

..

..

1825

..

..

..

..

1841

1842

Synoptical Table Of The Manufacture Of Iron Tubes 200281

Drawing through rolls .

..

..

..

..

..

..

..

..

1836

..

1841

..

Synoptical Table Of The Manufacture Of Iron Tubes 200282

FINISHING BY

Drawbench and holes

1808

..

..

..

..

..

1831

..

1836

..

1841

..

Synoptical Table Of The Manufacture Of Iron Tubes 200283

Drawbench and rolls

1808

..

..

..

1824

..

..

..

1836

..

..

..

Synoptical Table Of The Manufacture Of Iron Tubes 200284

Drawing over a mandril.

..

..

..

..

..

..

..

..

..

..

1841

..

FORM OF MANDRIL.

No mandril .

..

. .

1812

. .

1824

1825

1831

..

1836

..

..

..

Synoptical Table Of The Manufacture Of Iron Tubes 200285

Parallel and in motion .

1808

..

1812

. .

1824

..

..

..

..

..

..

..

Synoptical Table Of The Manufacture Of Iron Tubes 200286

Taper and in motion

..

1812

..

..

..

..

..

..

..

..

..

..

Synoptical Table Of The Manufacture Of Iron Tubes 200287

Enlarged end, and at rest

..

..

..

1817

..

..

..

1836

..

1840

1841

..

FORM OF JOINT.

Synoptical Table Of The Manufacture Of Iron Tubes 200288

Butt (or jump)

..

..

..

..

1824

1825

1831

1836

1836

1840

1841

..

Synoptical Table Of The Manufacture Of Iron Tubes 200289

Scarf(orlap) .

1808

1812

1812

1817

..

..

..

1836

..

1840

1841

1842

In the first column on the left of the Synoptical Table, are represented little sketches of the principal means employed in the manufacture of welded tubes; next follow the verbal explanations of the sketches; and the group of columns on the right are headed with the names of patentees and the dates of their patents. The dates inserted in these columns, in the same horizontal lines as the sketch - , •re intended to show that such means were employed under the several patents designated by the dates.

For example, running the eye down the first date column, it is to be understood that Benjamin Cook's, the first patent for the manufacture of iron tubes, was dated 1808 - that by him the tube was welded by the hand hammer - finished by the draw-bench and drawing roll* - that the mandril employed was parallel, and lastly that the tube had a scarf or lap joint - and so with all the others.

This tabular view, although most fascinating for a cursory inspection, could not be made to convoy various matters of detail, and points of important yet minute difference, which have existed in the several modes of practice, and which have given rise to many and expensive lawsuits. And therefore, as a brief summary of the entire manufacture, the author subjoins, from the pen of a friend who is professionally and intimately acquainted with the subject, a condensed account, showing the dates, titles, and the main features and processes of the entire series) of patents for making wrought iron tubes.