S54 |: 
eock adapted to the purpose. “I here 
may observe,” says Mr. M. “ that shouid 
the operator prove so thoughtless, while 
yetorting, as to allow the cock to be shut 
which should be open, and that open 
which should be shut, the worst conse- 
quences which can follow is the less ef 
gas, without doing the least harm to the 
apparatus. . . 
When the neserroir is sunk. under 
ground, (which 1s by much the best way 
shen the water can be let off,) the above 
order is inverted, 
The box with the syphons, [place al- 
ways near the workman, and if possible 
within the same walls, and thence con- 
afuct the water to the reservoir by a pipe. 
It will appear evident to most peopte, 
that if such an apparatus acts well for 
one day, it will do so for any length of 
time, without meeting with any obstrue- 
tion except from tar, which can be re- 
moved in a few minutes by intreducing 
steam into the pipes. 
= 
IR. 7. SLATER’S, (BIRMINGHAM,) for an 
Jntprovement in hanging and securing 
Grind-stones from breaking in the 
Middle or Centre. 
Each grind-stone is to.be hung through 
the centre upon a spindle, in the usual 
way, tight wedging excepted; and then 
en each side is placed a flat piece of 
wood or washer, or other substance of a 
soft or yielding nature, which must ex- 
tend in a circle from the spindle-hole in 
the grind-stone 'to any part, of its dia- 
meter, to forma bed, or equal bearing, 
acainst or upon the wood-or washer, so 
described. On each side of the grinds 
stone, flat rings of iron are to be placed ; 
to these are to Le added strong gripes 
or bracing plates, made. circular, and 
corresponding in aigmeter with the rings. 
Each griper must have a bole in tts cen- 
tre, of a proper size and figure to admit 
avid receive the spindle of the'grind-stone, 
As near as convenient to, and round the 
circular outward edges, of each griper or 
bracing- plate, holes are to be made at 
sinall distances, of a proper size and 
form to. admit screwed nuts, or burrs, 
£r-ed and screwed to them so as to hold 
pins or bolts, avhich- must -be made to 
screw pointedly towards the rings and 
grind-stone. ‘The gnpes or bracing- 
plates being thus made, they are to be 
placed on the ring, one oA each side af 
the grind-stone, the “spindie passug 
through them ail, winch are then tobe 
secured completely tight and firm to 
their places by means Of screws, COLLErs, 
Pafsents lately Enrolled. 
~axle, or arm and 
&c. This invention is clearly exhibited 
by the figures that are attached to the” 
specification. ’ 
(Sane 
‘MR. BENJAMIN FLIGHTS, (ST. MARTIN’S 
LANE,) for a Metul Nave, Axle, and. 
Box, for Wheel-Carriages, to prevent 
the danger of overturning, and the 
concussion of Carriages coming tr con= 
tact at the Nave, &c. ; 
‘ 
‘This invention consists of a metal nave,’ 
bex, for wheel-carria- 
ges, of which the axle ts a fixture in the 
centre of the nave. The box, which 
forms a part of the tree, receives the axle, 
which 3s confined therein by a pair of 
chaps, and a, bolt going through the 
same. The reservoir to contain the eil 
is within the external end of the axle; 
and the oil js to be introduced through a 
hole in the cap of the nave, whica is 
closed by a screw. A wooden nave, 
having a metal dining in which to fix the 
axle, may be adopted; but the preference 
is to be given to the metal nave. 
MR. JOHN WILLIAMS, (CORNHILL,) for 
an Apparatus to be applied to, and ased 
with, Wheel-Carriages. ? \ 
The figures attached to this specifica. 
tion, represent the several parts; one of 
which shews an apparatus called a pre. 
server, consisting of two branches; the 
leading one is made longer than the 
other, and the lower extremities of 
which lie in the plane of the wheel, or 
nearly so: there are also seen a strength= 
ening piece, and a socket at top, througa 
which is a hole for a pin, bolt, or screw, 
In fig. 2. we have the representation of a. 
spindie, the lower part of which is fitted 
upon a square part of the axletree, and 
secured iu its place by a clip plate, and . 
When the preserver - 
bolts at each side. 
is in its place, the spindle passes through 
the socket, which is then made-fast by a 
pin, bolt, or screw. Other figures repre- 
sent a pair of preservers, applied to a, 
two-wheeled carriage, seen endwise, and’ 
the same seen sidewise. 
The effect of this apparatus, or additi. 
onal parts, is to prevent the great danger 
in a two-wheeled carriage,-when, by a 
fall of the horse, or any part giving way, 
the body might be thrown forward or 
backward by a motion on the‘axis; for 
the manifest effect of it is to receive and 
support the carriage nearly in the hon- 
zontal positien, without the possibility of 
any considerable tilt or inchnation either | 
forwards or backwards. 
~~ 
faa. 
The said apparatus may be made of — 
rOct. he 
4 
