Book/Printed Material The engineer's and mechanic's encyclopædia, comprehending practical illustrations of the machinery and processes employed in every description of manufacture of the British empire Volume 2
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Image 81 of Volume 2 8 âLEATHER parts such as the head tail and shanks being first taken off which is called rounding the skin itis soaked in a tub of water preparatory to shaving which is…- Contributor: Lessing J. Rosenwald Collection (Library of Congress) - Hebert, Luke
- Date: 1836
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Image 82 of Volume 2 Fr Jd LEATHER this liquor is poured out on each skin spread out on wooden trays till it has imbibed the whole of the honey after which it is suffered to ferment…- Contributor: Lessing J. Rosenwald Collection (Library of Congress) - Hebert, Luke
- Date: 1836
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Image 83 of Volume 2 76 LENS application of an elastic coating and varnish to substances of a pliable nature such as all kinds of cloth whether cotton linen woollen or felt When the material is required…- Contributor: Lessing J. Rosenwald Collection (Library of Congress) - Hebert, Luke
- Date: 1836
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Image 84 of Volume 2 LENS 77 of a lens is half an inch if it exceed that thickness they do not call it a lens but a lenticular glass Lenses are made either by blowing or…- Contributor: Lessing J. Rosenwald Collection (Library of Congress) - Hebert, Luke
- Date: 1836
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Image 85 of Volume 2 78 LEVEL to fix a diamond at the point for cutting the glasses out of a true circular figure by being screwed on at m The several tools used are adapted for…- Contributor: Lessing J. Rosenwald Collection (Library of Congress) - Hebert, Luke
- Date: 1836
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Image 86 of Volume 2 LEVEL 79 are screwed down by flanges to the tube f which is flat at top and through which the mercury flows cc are two floats also exactly equal to each other…- Contributor: Lessing J. Rosenwald Collection (Library of Congress) - Hebert, Luke
- Date: 1836
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Image 87 of Volume 2 80 LEVEL A plummet being suspended from the top of the upright piece shows that the base is horizontal when its line and the line drawn from the point of suspen sion…- Contributor: Lessing J. Rosenwald Collection (Library of Congress) - Hebert, Luke
- Date: 1836
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Image 88 of Volume 2 LEVEL 81 found in the table then multiply the square of âthe distance in yards by 257 and then divide by 1000000 or cut off six places on the right for decimals…- Contributor: Lessing J. Rosenwald Collection (Library of Congress) - Hebert, Luke
- Date: 1836
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Image 89 of Volume 2 82 LEVER circle to radius e d and let it be divided into 90 degrees ejg a plumb line falling from the centre C 4 two sights If through 4 the top…- Contributor: Lessing J. Rosenwald Collection (Library of Congress) - Hebert, Luke
- Date: 1836
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Image 90 of Volume 2 Eâââ TTT LEVER while the distances FW and FP in 1 represent the arms of the lever Fig 2 is an example of a lever of _ PL the second kind in…- Contributor: Lessing J. Rosenwald Collection (Library of Congress) - Hebert, Luke
- Date: 1836
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Image 91 of Volume 2 â84 LEVER let the longer arm ab be 12 feet and the shorter ac 2 feet then will the power be to the weight as 2 to 12 that is a power…- Contributor: Lessing J. Rosenwald Collection (Library of Congress) - Hebert, Luke
- Date: 1836
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Image 92 of Volume 2 LIGHTHOUSE rowing boats in the rudder of a ship nutcrackers c The safety valves of steam engines are some times levers of the second kind fs In Fig 12 b is the…- Contributor: Lessing J. Rosenwald Collection (Library of Congress) - Hebert, Luke
- Date: 1836
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Image 93 of Volume 2 86 LIGHTHOUSE towers also formed a considerable part of the fortifications of the early ages and before the invention of making distant signals the watchmen were fur nished with large seaconchs which…- Contributor: Lessing J. Rosenwald Collection (Library of Congress) - Hebert, Luke
- Date: 1836
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Image 94 of Volume 2 LIGHTHOUSES 87 outsides of them were coated with plaster of Paris The work went rapidly on in this manner and the second course was nearly set in a few days but a…- Contributor: Lessing J. Rosenwald Collection (Library of Congress) - Hebert, Luke
- Date: 1836
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Image 95 of Volume 2 88 LIGHTNING CONDUCTORS LIGHTNING The explosion of the electric fluid in the atmosphere LIGHTNING CONDUCTORS are pointed metallic rods fixed to the upper parts of buildings to secure them from strokes of…- Contributor: Lessing J. Rosenwald Collection (Library of Congress) - Hebert, Luke
- Date: 1836
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Image 96 of Volume 2 F33 8 LIME extent so as to admit of the motion of one portion of the mast upon another and in case of the removal of any part of the mast together…- Contributor: Lessing J. Rosenwald Collection (Library of Congress) - Hebert, Luke
- Date: 1836
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Image 97 of Volume 2 90 LIME all carbonates of lime gypsum is a sulphate of lime Berzelius attempted to determine the prime equivalent of calcium from the proportion in which it combines with oxygen to form…- Contributor: Lessing J. Rosenwald Collection (Library of Congress) - Hebert, Luke
- Date: 1836
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Image 98 of Volume 2 LIME 91 or dearer All kinds of lime exposed to the air recover nearly their original weight except chalk lime which although long exposed never recovers more than seveneighths of its original…- Contributor: Lessing J. Rosenwald Collection (Library of Congress) - Hebert, Luke
- Date: 1836
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Image 99 of Volume 2 92 LINT with carbonic acid will dissolve a much larger quantity of it than before and when deprived of this acid by exposure to the air the lime it held in solution…- Contributor: Lessing J. Rosenwald Collection (Library of Congress) - Hebert, Luke
- Date: 1836
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Image 100 of Volume 2 LIQUEURS 93 the operator pulls back the stick towards her through a space of from a quarter to half an inch the weft thread is thereby pushed further along the warp threads…- Contributor: Lessing J. Rosenwald Collection (Library of Congress) - Hebert, Luke
- Date: 1836
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Image 101 of Volume 2 94 LITHOGRAPHY by a spirit lamp  having several wicks The still has a tall neck surmounted by a head d surrounded by cold water in the refrigeratory e The vapour as…- Contributor: Lessing J. Rosenwald Collection (Library of Congress) - Hebert, Luke
- Date: 1836
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Image 102 of Volume 2 LITHOGRAPHY 95 the use of dry soap which was found to leave permament traces which would give impressions naturally led to the mode of chalk drawings In 1799 after having made many…- Contributor: Lessing J. Rosenwald Collection (Library of Congress) - Hebert, Luke
- Date: 1836
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Image 103 of Volume 2 96 LITHOGRAPHY ink or the chalk penetrates into their âsubstance and consequently the more of the stone must be ground away to remove them this is also more necessary with ink drawings…- Contributor: Lessing J. Rosenwald Collection (Library of Congress) - Hebert, Luke
- Date: 1836
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Image 104 of Volume 2 LITHOGRAPHY 97 from the trough is again poured over it in the same manner The degree of strength which is usually about one per cent of acid should be such as to…- Contributor: Lessing J. Rosenwald Collection (Library of Congress) - Hebert, Luke
- Date: 1836
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Image 105 of Volume 2 98 LITHOGRAPHY stone and thus destroy the drawing The consideration of these circumstances leads at once to theâ Principles of the PrintingâThe accidents just mentioned arise at the extreme points of the…- Contributor: Lessing J. Rosenwald Collection (Library of Congress) - Hebert, Luke
- Date: 1836
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Image 106 of Volume 2 LITHOGRAPHY 99 for that purpose should possess the following properties The ink ought to be mellow and somewhat thicker than that used immediately on stone so that when it is dry on…- Contributor: Lessing J. Rosenwald Collection (Library of Congress) - Hebert, Luke
- Date: 1836
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Image 107 of Volume 2 100 LITHOGRAPHY necessary to proceed in order to transfer writings and drawings There are two autographic processes which facilitate and abridge this kind of work when it is desired to copy a…- Contributor: Lessing J. Rosenwald Collection (Library of Congress) - Hebert, Luke
- Date: 1836
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Image 108 of Volume 2 LITHOGRAPHY 101 transferred At each stroke of the press the mackle paper which has imbibed moisture is withdrawn and a dry sheet substituted in its place All these operations require to be…- Contributor: Lessing J. Rosenwald Collection (Library of Congress) - Hebert, Luke
- Date: 1836
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Image 109 of Volume 2 102 LOCKS furnished at a quarter of their present actual value in fact all those which are done in lines or those in which the shadows are boldly executed are capable of…- Contributor: Lessing J. Rosenwald Collection (Library of Congress) - Hebert, Luke
- Date: 1836
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Image 110 of Volume 2 LOCKS 103 considered as being of recent invention For these reasons we think it will not be amiss to introduce in this place some of the Âscantlingsâ alluded to Making some allowance…- Contributor: Lessing J. Rosenwald Collection (Library of Congress) - Hebert, Luke
- Date: 1836
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Image 111 of Volume 2 104 LOCKS are however made not only without tumblers but even without wards for very common purposes and being sufficiently secure for their objects and extremely cheap they are manufactured in immense…- Contributor: Lessing J. Rosenwald Collection (Library of Congress) - Hebert, Luke
- Date: 1836
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Image 112 of Volume 2 LOCKS 105 the motion of the machine is so totally suspended as to defy every power of art to overcome To understand in what manner the proper key of this lock over…- Contributor: Lessing J. Rosenwald Collection (Library of Congress) - Hebert, Luke
- Date: 1836
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Image 113 of Volume 2 106 LOCKS to estimate the number producible which may be thus attempted âLet the denominations of these levers c be represented by twelve arithmetical pro gressionals we find that the ultimate number…- Contributor: Lessing J. Rosenwald Collection (Library of Congress) - Hebert, Luke
- Date: 1836
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Image 114 of Volume 2 LOCKS 107 keys even if he could be intrusted with them only for a few minutes but this cannot be done with the key of the union lock as it would require…- Contributor: Lessing J. Rosenwald Collection (Library of Congress) - Hebert, Luke
- Date: 1836
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Image 115 of Volume 2 108 LOCKS discovered There are few cases in which this plan can be advantageously employed Messrs Carpenter and Young of Willenhall in Staffordshire had a patent in 1830 for improvements in locks…- Contributor: Lessing J. Rosenwald Collection (Library of Congress) - Hebert, Luke
- Date: 1836
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Image 116 of Volume 2 LOCKS 109 numerous tribe of petty pilferers there are few who have sufficient knowledge of the nature of common locks to succeed in or who are daring enough to attempt the picking…- Contributor: Lessing J. Rosenwald Collection (Library of Congress) - Hebert, Luke
- Date: 1836
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Image 117 of Volume 2 110 LOG chest caddy c These also partake of three forms as respects the manner of fixing them They are called straight when the plate of the lock is to be screwed…- Contributor: Lessing J. Rosenwald Collection (Library of Congress) - Hebert, Luke
- Date: 1836
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Image 118 of Volume 2 LOGARITHMS i their contracting which in a new line is about 20 feet in 50 fathoms As many serious accidents are likely to occur by getting a false depth of water in…- Contributor: Lessing J. Rosenwald Collection (Library of Congress) - Hebert, Luke
- Date: 1836
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Image 119 of Volume 2 112 LOGARITHMS OF NUMBERS To illustrate this let us takeâ For Natural Numbers the 1 Geometrical Series And for their Lop the Arithmetical Series 10 100 1000 10000 100000 4 5 1000000…- Contributor: Lessing J. Rosenwald Collection (Library of Congress) - Hebert, Luke
- Date: 1836
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Image 120 of Volume 2 LOGARITHMS OF NUMBERS LOG NUM LOG LOG NUM LOG LOG 0000000 0043214 0086002 0128372 0170333 0211893 0253059 0295838 0334238 0374265 0413927 0453230 0492180 0530784 0569049 0606978 0644580 0681859 0718820 0755470 0791812 0827854…- Contributor: Lessing J. Rosenwald Collection (Library of Congress) - Hebert, Luke
- Date: 1836
About this Item
Title
- The engineer's and mechanic's encyclopædia, comprehending practical illustrations of the machinery and processes employed in every description of manufacture of the British empire
Names
- Hebert, Luke
- Lessing J. Rosenwald Collection (Library of Congress)
Created / Published
- London, T. Kelly, 1836-1837.
Headings
- - Technology--Dictionaries
- - Industrial arts--Dictionaries
- - Industries--Great Britain--Colonies--History
Notes
- - Library of Congress. Lessing J. Rosenwald collection, 2552
- - LAC ddw 2022-06-06 update (1 card)
- - Rosenwald collection copy listed without call number in Rosenwald bibliography. LAC ddw 2022-06-06
Medium
- 2 v. fronts., illus., diagrs. 22 cm.
Call Number/Physical Location
- T9 .H44
- T9 .H44 Copy 2 Rosenwald collection item 2552.
Digital Id
Library of Congress Control Number
- 05004710
Online Format
- online text
- image