第 56 节
作者:铲除不公      更新:2021-03-08 19:38      字数:9321
  inspection by Sir Samuel Bentham and the Lords of the Admiralty in
  1801; and having been fully approved by them; Brunel was authorized
  to proceed with the execution of the requisite machinery for the
  manufacture of the ship's blocks required for the Royal Navy。  The
  whole of this machinery was executed by Henry Maudslay; it occupied
  him very fully for nearly six years; so that the manufacture of
  blocks by the new process was not begun until September; 1808。
  We despair of being able to give any adequate description in words of
  the intricate arrangements and mode of action of the block…making
  machinery。  Let any one attempt to describe the much more simple and
  familiar process by which a shoemaker makes a pair of shoes; and he
  will find how inadequate mere words are to describe any mechanical
  operation。*
  'footnote。。。
  So far as words and drawings can serve to describe the block…making
  machinery; it will be found very ably described by Mr。 Farey in his
  article under this head in Rees's Cyclopaedia; and by Dr。 Brewster in
  the Edinburgh Cyclopaedia。  A very good account will also be found in
  Tomlinson's Cyclopaedia of the Useful Arts; Art。  〃Block。〃
  。。。'
  Suffice it to say; that the machinery was of the most beautiful
  manufacture and finish; and even at this day will bear comparison
  with the most perfect machines which can be turned out with all the
  improved appliances of modern tools。  The framing was of cast…iron;
  while the parts exposed to violent and rapid action were all of the
  best hardened steel。  In turning out the various parts; Maudslay found
  his slide rest of indispensable value。  Indeed; without this
  contrivance; it is doubtful whether machinery of so delicate and
  intricate a character could possibly have been executed。  There was
  not one; but many machines in the series; each devoted to a special
  operation in the formation of a block。  Thus there were various
  sawing…machines;the Straight Cross…Cutting Saw; the Circular
  Cross…Cutting Saw; the Reciprocating Ripping…saw; and the Circular
  Ripping…Saw。  Then there were the Boring Machines; and the Mortising
  Machine; of beautiful construction; for cutting the sheave…holes;
  furnished with numerous chisels; each making from 110 to 150 strokes
  a minute; and cutting at every stroke a chip as thick as pasteboard
  with the utmost precision。  In addition to these were the Corner…Saw
  for cutting off the corners of the block; the Shaping Machine for
  accurately forming the outside surfaces; the Scoring Engine for
  cutting the groove round the longest diameter of the block for the
  reception of the rope; and various other machines for drilling;
  riveting; and finishing the blocks; besides those for making the
  sheaves。
  The total number of machines employed in the various operations of
  making a ship's block by the new method was forty…four; and after
  being regularly employed in Portsmouth Dockyard for upwards of fifty
  years; they are still as perfect in their action as on the day they
  were erected。  They constitute one of the most ingenious and complete
  collections of tools ever invented for making articles in wood; being
  capable of performing most of the practical operations of carpentry
  with the utmost accuracy and finish。  The machines are worked by a
  steam…engine of 32…horse power; which is also used for various other
  dockyard purposes。  Under the new system of block…making it was found
  that the articles were better made; supplied with much greater
  rapidity; and executed at a greatly reduced cost。  Only ten men; with
  the new machinery; could perform the work which before had required a
  hundred and ten men to execute; and not fewer than 160;000 blocks of
  various kinds and sizes could be turned out in a year; worth not less
  than 541;000L。*
  'footnote。。。
  The remuneration paid to Mr。 Brunel for his share in the invention
  was only one year's savings; which; however; were estimated by Sir
  Samuel Bentham at 17;663l。; besides which a grant of 5000L。 was
  afterwards made to Brunel when labouring under pecuniary
  difficulties。  But the ANNUAL saving to the nation by the adoption of
  the block…making machinery was probably more than the entire sum paid
  to the engineer。  Brunel afterwards invented other wood…working
  machinery; but none to compare in merit and excellence with the
  above; For further particulars of his career; see BEAMISH'S Memoirs
  of Sir Marc Isambard Brunel; C。E。  London。  1862。  。。。'
  The satisfactory execution of the block…machinery brought Maudslay a
  large accession of fame and business; and the premises in Margaret
  Street proving much too limited for his requirements; he again
  resolved to shift his quarters。  He found a piece of ground suitable
  for his purpose in Westminster Road; Lambeth。  Little more than a
  century since it formed part of a Marsh; the name of which is still
  retained in the adjoining street; its principal productions being
  bulrushes and willows; which were haunted in certain seasons by snipe
  and waterfowl。  An enterprising riding…master had erected some
  premises on a part of the marsh; which he used for a riding…school;
  but the speculation not answering; they were sold; and Henry Maudslay
  became the proprietor。  Hither he removed his machinery from Margaret
  Street in 1810; adding fresh plant from time to time as it was
  required; and with the aid of his late excellent partner he built up
  the far…famed establishment of Maudslay; Field; and Co。  There he went
  on improving his old tools and inventing new ones; as the necessity
  for them arose; until the original slide…lathes used for making the
  block…machinery became thrown into the shade by the comparatively
  gigantic machine…tools of the modern school。  Yet the original lathes
  are still to be found in the collection of the firm in Westminster
  Road; and continue to do their daily quota of work with the same
  precision as they did when turned out of the hands of their inventor
  and maker some sixty years ago。
  It is unnecessary that we should describe in any great detail the
  further career of Henry Maudslay。  The rest of his life was full of
  useful and profitable work to others as well as to himself。  His
  business embraced the making of flour and saw mills; mint machinery;
  and steam…engines of all kinds。  Before he left Margaret Street; in
  1807; he took out a patent for improvements in the steam…engine; by
  which he much simplified its parts; and secured greater directness of
  action。  His new engine was called the Pyramidal; because of its form;
  and was the first move towards what are now called Direct…acting
  Engines; in which the lateral movement of the piston is communicated
  by connecting…rods to the rotatory movement of the crank…shaft。  Mr。
  Nasmyth says of it; that 〃on account of its great simplicity and
  GET…AT…ABILITY of parts; its compactness and self…contained
  steadiness; this engine has been the parent of a vast progeny; all
  more or less marked by the distinguishing features of the original
  design; which is still in as high favour as ever。〃  Mr。 Maudslay also
  directed his attention in like manner to the improvement of the
  marine engine; which he made so simple and effective as to become in
  a great measure the type of its class; and it has held its ground
  almost unchanged for nearly thirty years。  The 'Regent;' which was the
  first steamboat that plied between London and Margate; was fitted
  with engines by Maudslay in 1816; and it proved the forerunner of a
  vast number of marine engines; the manufacture of which soon became
  one of the most important branches of mechanical engineering。
  Another of Mr。 Maudslay's inventions was his machine for punching
  boiler…plates; by which the production of ironwork of many kinds was
  greatly facilitated。  This improvement originated in the contract
  which he held for some years for supplying the Royal Navy with iron
  plates for ships' tanks。  The operations of shearing and punching had
  before been very imperfectly done by hand; with great expenditure of
  labour。  To improve the style of the work and lessen the labour;
  Maudslay invented the machine now in general use; by which the holes
  punched in the iron plate are exactly equidistant; and the subsequent
  operation of riveting is greatly facilitated。  One of the results of
  the improved method was the great saving which was at once effected
  in the cost of preparing the plates to receive the rivets; the price
  of which was reduced from seven shillings per tank to ninepence。  He
  continued to devote himself to the last to the improvement of the
  lathe;in his opinion the master…machine; the life and soul of
  engine…turning; of which the planing; screw…cutting; and other
  machines in common use; are but modifications。  In one of the early
  lathes which he contrived and made; the mandrill was nine inches in
  diameter; it was driven by wheel…gearing like a crane motion; and
  adapted to different speeds。  Some of his friends; on first looking