第 56 节
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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