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A Practical Treatise on Gas-light: Exhibiting a Summary Description of the Apparatus and Machinery Best Calculated for Illuminating Streets, Houses, and Manufactories, with Carburetted Hydrogen, or Coal-Gas, with Remarks on the Utility, Safety, and General Nature of this new Branch of Civil Economy.Accum, Friedrich Christian

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A Practical Treatise on Gas-light: Exhibiting a Summary Description of the Apparatus and Machinery Best Calculated for Illuminating Streets, Houses, and Manufactories, with Carburetted Hydrogen, or Coal-Gas, with Remarks on the Utility, Safety, and General Nature of this new Branch of Civil Economy.

Name: A Practical Treatise on Gas-light: Exhibiting a Summary Description of the Apparatus and Machinery Best Calculated for Illuminating Streets, Houses, and Manufactories, with Carburetted Hydrogen, or Coal-Gas, with Remarks on the Utility, Safety, and General Nature of this new Branch of Civil Economy.
Author: Accum, Friedrich Christian

Accum, Friedrich Christian

Candles; Gas-lighting

One chaldron of Coal produces, according to weight and quality,
   Cubic feet of Gas.  Average. Burning. Candles. 12 to 1lb. 6 to 1lb.
  From 9,000 to 12,000  10,500  1 hour      =       21,000  = 10,500
       -----    ------  ------  2 hours     =       10,500  =  5,250
       6,000    8,000   7,000   3 ditto     =        7,000  =  3,500
       4,500    6,000   5,250   4 ditto     =        5,250  =  2,625
       3,600    4,800   4,400   5 ditto     =        4,400  =  2,200
       3,000    4,000   3,500   6 ditto     =        3,500  =  1,750
       2,571    3,428   3,005   7 ditto     =        3,005  =  1,502
       2,250    3,000   2,625   8 ditto     =        2,625  =  1,312
       2,000    2,666   2,333   9 ditto     =        2,333  =  1,166
       1,800    2,100   2,100  10 ditto     =        2,100  =  1,050
       1,636    2,191   1,913  11 ditto     =        1,913  =    956
       1,500    2,000   1,750  12 ditto     =        1,750  =    875
       1,384    1,846   1,615  13 ditto     =        1,615  =    807
       1,285    1,714   1,499  14 ditto     =        1,499  =    749
       1,200    1,600   1,400  15 ditto     =        1,400  =    700
       1,125    1,500   1,312  16 ditto     =        1,312  =    656
       1,058    1,111   1,234  17 ditto     =        1,234  =    617
       1,000    1,333   1,166  18 ditto     =        1,166  =    583
         947    1,263   1,105  19 ditto     =        1,105  =    552
         900    1,200   1,050  20 ditto     =        1,050  =    525
         857    1,143   1,000  21 ditto     =        1,000  =    500
         818    1,095     956  22 ditto     =          956  =    478
         783    1,044     913  23 ditto     =          913  =    456
         750    1,000     875  21 ditto     =          875  =    437

N. B. If it be required to know, for how many hours one pound, or one
peck, or one bushel, or one sack, of coal will produce Gas Light equal
to that of a certain number of well-snuffed Tallow Candles, the
proportion of each of the average weights of a pound, peck, bushel, or
sack, to that of the average weight of a chaldron of coal, is as
follows:

               1 lb. = 2968th part of a chaldron.
  One peck    20     = 148th        ditto.
  One bushel  82     =  36th        ditto.
  One sack   248     =  12th        ditto.

RULE.--Divide with either of the above parts of weight, the number of
lights opposite to their hours, and the product will be the number of
lights burning for the same number of hours.

EXAMPLE.--To know how many lights one peck of coal will give for six
hours, divide the 148th part in 3,500, opposite to the number of six
hours, the product is almost 24 lights. The same rule holds good for any
given quantity or number of pounds of coal, in a chaldron, to find how
many lights, or candles, 12 to the lb. or 6 to the lb. they will give
for a given number of hours.


DESCRIPTION OF THE GAS-LIGHT APPARATUS.

PLATE I.

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