c o 
and from which the corves or bafkets are fnfpended, as 
fhewn in fig. 2. On thefe crofs bars are four linall wheels 
or pullies, two of which are placed at the ends of each 
bar, and bear upon the platform F F, except when palling 
round the wheels D, D, when the inner wheels or pullies 
bear on the platform G G; by which means, the corves 
or bafkets B, B, are carried to the oppofite fide of the 
platform F F, and then travel in a dire&ion contrary to 
that in which they moved on the other fide of the plat¬ 
form. By this method of conftrufting the platform G G, 
and placing the wheels D, D, (as reprefented tn fig. 1 and 
2,) the corves or bafkets may be carried round any part 
of a circle, not exceeding three-fourths, with certainty 
and expedition, without the affiftance of human ltrength, 
or retarding the motion of the machinery, which may be 
worked in the mine by any given power. My method of 
giving motion to this machinery, is reprefented in fig. 4, 
5, and it, where the endlefs chain or chains F, F, being 
put in motion, (in the manner hereafter def’cribed,) and 
turning the wheels G, G, near the bottom of the pit, (as 
reprefented in fig. 4, 5, and 11,) give motion to the wheels 
L, L, and likewife to the wheels M, M, with their axes 
N, N. On the fame axes are the wheels O, O, and re¬ 
volve with them ; and, by means of the fhort chain I, I, 
communicate motion to the wheels P, P, with their axes 
Q^Q^_and the upper wheels, on the fame axes D, D. This, 
of courfe, gives motion to the long endiefs chain C C, 
together with the crols bars E, E, and the full and empty 
corves B, B, which are thus carried, in rotation, to and 
from the interior parts of the mine, and the bottom of 
the pit or fliaft. 
Fig. 2 and 3, are fide-views or fections, reprefenting the 
interior parts of a coal-mine, with part of the pit or lhaft, 
where the fame letters refer to the fame parts. 
Fig. 6, 7, and 8, are an example of this method of com¬ 
municating motion from the endlefs chains or ropes F, F, 
that are reprefented in fig. 4 and 55 where the wheels 
L, L, give motion to the wheels M, M, with their axes 
N, N, and the lower chain-wheels O, O, which commu¬ 
nicate motion to the fhort endlefs chain 11, together with 
the wheels- P, P, before defcribed. By this contrivance, 
the machinery may be flopped, or put in motion, as oc- 
cafion may require, without Hopping or retarding the 
endlefs chains F, F, when drawing coals up the pit or 
lhaft, as defcribed in fig. 4, 5, and 11. 
Fig. 6, is a feftion of this method of flopping and giv¬ 
ing motion to the fhort endlefs chain I I, which commu¬ 
nicates motion to the endlefs chain C C. The wheels 
M, M, being put in motion, together with their axes N,N, 
which revolve in the center of the wheels O, Of carry 
round the cylindrical block or chuck S S, with its pro¬ 
jections, by means of a prominence in the cylindrical 
hole of the block, fig. 8, which Aides in a groove, near 
the bottom end of the axis N N. This block is fufpended, 
as occafion requires, by the lever T, fig. 2, and is there¬ 
by prevented from coming in contaCt with the wheels 
O, O. When it is found convenient to have the endlefs 
chain C C put in motion, by the communicating chain 
I I, a man lifts up the long end of the lever T, and de- 
preffes the cylindrical block, until it comes in contact 
with the notches in the wheels O, O, which are then car¬ 
ried round by the projections on the block S S fig. 8, and 
the axis N JM, together with the endlefs chains I I and 
C C. This motion may be flopped at pleafure, by pref- 
ling down the long end of the lever T, which lifts the 
block S S clear from the notches in the wheels 0 , 0 ; by 
which means, the machinery in the interior parts of the 
mine is managed vVith certainty and expedition. 
Fig. 4 and 5, reprefent my addition to, and improve¬ 
ment in, the manner of delivering coals, ores, &c. at the 
mouth of the pit, where A A is a Aiaft or axis, worked 
by a fleam-engine, as expreffed in the annexed engraving 
at Y, or by fome other power, on which are fixed two 
wheels working into the wheels C,C, which may be made 
to revolve either on or with their own axis D. Thefe 
A L. 707 
wheels, in their motion, carry round with them. wlijit I 
term the chain-wheels E, E, and which have projections 
on their furface, to prevent the chains from flipping. 
F, F, are endlefs chains, or ropes, fupported by the wheels 
E, E, and are put in motion bv them. Thefe chains are 
kept in their proper petition* at the bottom of the pit, by 
the wheels G, G. H, H, are crofs bars, fixed to the end¬ 
iefs chains, or ropes, F, F, from which the corves or 
bafkets B, B, are fufpended, by means of fhort chains or 
ropes I, I. The endlefs chains or ropes being put in 
motion, as above defcribed, and as many loaded corves or 
b fkets being in the aCt of afeending up the pit, at the 
fame time, as may be found convenient, when the crofs 
bars H, H, come in contact with the chain-wheels T, E, 
they vary their motion from the perpendicular direction, 
and are carried over the top of the wheels E, E ; then, 
acquiring a defeending motion on the oppofite fide of the 
wheels E, E, and confequently on the oppofite fide of the 
pit, carry with them the loaded bafkets fufpended as be¬ 
fore-mentioned, which, in their perpendicular defeeir . 
are depofited on the fledge K, as in fig. 4. The loaded 
corves being then diiengaged from the fhort chains or 
ropes I, I, empty corves or bafkets are hung on in their 
Head, and are carried, by the fame defeending motion, 
to the bottom of the pit, where they are again difenga- 
ged, and full bafkets hung on ; by which means, a regu¬ 
lar fucceffion of full and empty corves or bafkets is con- 
flantly produced. 
Fig. 5, is a fide-view of this method of delivering coals, 
ores, &c. at the mouth of the pit, where the fame letters 
refer to the fame parts. The w heels L, L, which I call 
conducing wheels, are placed near the top of the pit, im¬ 
mediately under the platform, which is commonly called 
the fettleboards , and which is on the fame fide of the pit 
with the defeending fide of the endlefs chain h F. . Thefe 
wheels, being fixed as above defcribed, prefs -a gain ft the 
endlefs chain F F, and caufe that part of the endlefs chain 
which'comes from the wheels C, C, to the wheels L, L, 
to alter its perpendicular direction ; but, on paffing thefe 
wheels, it again acquires a perpendicular direction in the 
pit. The defeending fide of the endlefs chain F F being 
thus preflfed nearer the afeending fide, and the fettleboards 
fixed, with the fledge K placed on them, as defcribed in 
the.annexed engraving, the corves or bafkets B, B, iuf- 
pended to the crofs bars H, H, and defeending from the 
wheels F-, E, in a perpendicular direction, are depofited 
on the fledge K. 
Fig. 9, is a plan of another method of giving motion 
to the wheels C, C, and chain-wheels F, E, as expreffed 
in fig. 4 and 5, from the lteam-engine Y, or any other 
given power; where F F is a crank and wheel, with its 
axis, on which are the wheels G and H, connected toge¬ 
ther by the cylindrical box or chuck I, which gives mo¬ 
tion to the pinion-wheels K. and L, with their axis A A, 
and pinion-wheels B B, together with the wheels. C, C. 
The motion being thus communicated by the axis F F, 
and the wheel G working into the pinion-wheel K, on 
the axis A A, and fuch motion being properly adapted 
to drawing coals, ores, &c. out of pits of great depth, 
where many coi ves or bafkets are in the aCt of afeending 
at the fame time, (as in fig. 4, 5, and i t,) the motion 
thus produced requires more time than is found conve¬ 
nient for the man, when afeending the pit or fliaft; there¬ 
fore it is neceflary to accelerate the motion,, which may 
be done with expedition, by fluffing the pinion-wheel K 
on the axis A A, out of the wheel G, on the crank-axis 
F F, and putting the fmall pinion-’;.heel L, to come in 
contact with the wheel H, on. the crank-axis. By this 
method, the chains and machinery, from the crank-axis 
F F, may be accelerated, in a fhort time, to any degree 
of motion that is molt convenient; the firfl moving caufe 
proceeding, without increafed velocity. 
Fig. 10, reprefents an example of a method cif apply¬ 
ing a parallel joint to a crank, by which contrivance, the 
reciprocating lteam-engine may be worked without what 
'is 
