Henry Maudslay 1771-1831
Henry Maudslay 1771-1831 Ships blockmortising machine Shaping machine Gear Cutter by Henry Maudslay Manufactured by Maudslay Sons and Field Lamberth England circa 1830 Drawing of the entrance to Maudslay, Sons & Field. Image Source : Lambeth Archives An advert for steam engines by Maudslay, Sons & Field. Image Source : Lambeth Archives

Henry Maudslay was apprenticed to Joseph Bramah (lock maker and inventor of the hydraulic press) but soon became his foreman. Maudslay invented the self tightening leather collar that sealed the pistons of Bramah's hydraulic press making it water tight. He also designed and greatly improved the machine tools used to make the locks.

Maudslay fell out with Bramah over pay and in 1797 set up his own workshop, in Wells Street (off Oxford Street) making precision machinery. Here he invented the 'slide rest' which let the tool rest slide the length of a lathe and be accurately set simply by using a handle. Later he devised a method of moving the rest by turning a handle. This mean that a tool could be clamped in the rest and moved smoothly along the length of the work greatly improving accuracy and quality of the finished goods. This method was widely used in many of Maudslay's self-acting and self-regulating machine tools. He further improved the lathe by adding steam power which meant that large metal pieces could be worked very quickly and accurately.

Maudslay's first major contact was for the 42 woodworking machines, powered by one 32 horse power steam engine, used by Sir Mark Brunel's block making factory. The blocks were used in the rigging of sailing ships, a single 74 gun Royal Navy ship needed some 1400 blocks of various sizes. Overall the navy needed 160,000 blocks (of various sizes) per year which were individually hand made by 110 men which cost more than �541,000. The machine made blocks were made to higher standards, with greater accuracy, more quickly and much cheaper than before. By using Maudslay's machines Brunel was able to cut his workforce to 10 men and saved the navy many tens of thousands of pounds per year.

Maudslay's work for Brunel brought him fame and soon he was making machinery for other factories which required larger premises. He obtained a 999 year lease on some ground in Westminster Road, Lambeth, build a new factory, and moved there in 1810.

Throughout his life Maudslay recognized the need for standardization in making goods of all sorts. He improved the micrometer, by a factor of ten, so that it was capable if accurately measuring down to 0.0001 inch. He improved and screw cutting lathes capable of making accurate standard threads (prior to this each screw thread was individually turned!!!). Whitworth, who was Maudslay's apprentice, further developed the concept of standard screw threads which soon became the defacto British standard.

Maudslay invented a new type of side rule (the early analogue computer used, by engineers and mathematicians, for multiplying and dividing numbers). Maudslay is also the inventor of a method of desalinating seawater for marine boilers, a method of printing on calico. The company manufactured equipment for flour mills, saw mills, minting equipment. The range and quality of products made the company an excellent breading ground for great engineers. Richard Roberts (The Planing Machine), Joseph Clement (Water Tap), James Nasmyth (Steam Hammer) as well as Whitworth were all apprenticed to the Company.

Brunel's Great Western had engines made by Maudslay, Sons & FieldCasting the monster cylinder for Her Majesty's Armour-plated frigate Agincourt at Maudslay& Co Foundry 1862
HMS Agincourt

Maudslay, Sons & Field (Maudslay's company) developed marine steam engines and stationery engines (as used in Water pumping stations). Brunel's SS Great Western was fitted with two side lever engines and four flue type boilers made and installed in Lambeth by Maudslay, Sons & Field in 1837/8.