172 
‘degrees of strength. When the bone is 
thus reduced into substances, resembling 
bristles, it must be laid in a convenient 
place, that it may become perfectly dry, 
aid then it may be worked upinto brush- 
es: those that are to be set with pitch, may 
be seared or singed at one end with a hot” 
iron, to make them resemble the roots, 
and beat at the other to make them re- 
semble the flag of the bristle. 
See Ee 
MR. RALPH DoDD’s (CHANGE ALLEY, LON- 
Don), for improved Bridge Floorings, 
or Platforms, and Fire Pronf Flooriags, 
for extensive Dwelling Houses, Ware- 
houses and Milis. 
“Fhis invention consists of a certain me- 
thod of appiyng malleable iron, and other 
metals, and condensed earth, or artificial 
stone. As the right understanding of this 
specification depends oni figures, which we 
cannot introduce inte this work, the 
most we can do is to describe the objects 
of the figures. The first is meant for a 
tubical rib, to be used either empty or fl- 
Jed, or partly filled with condensed earth, 
or artificial stone, to be applied from one 
pier to another, or bearings, either straight 
triangular, orcurved. The second repre- 
sents an upright shaft, or column, forsus- 
taining heavy weights strengthened with 
condensed earth or artificial stone. Ano- 
ther figure shows the same with flanges or 
joints for attaching one to each other, 
‘to stand upright, or to be laid horizontal, 
for bearing heavy pressures,or conducting 
fluids, or air, in a cold or heated state, 
through them, when part of the centre is 
left void of condensed earth, or artificial 
stone. The next figure shews a square 
tube, tobe cuated internally, or extemal- 
ly, with condensed earth, or artificial 
stone, to be used as a beam, raf-er, joist, 
girder, pile, &c. ‘This is varied in its 
shape, size, and other particulars, and is 
represented with the variations in other 
figures. We have likewise the figure of a 
tubical beam, made of the saine materials, 
with two upper ears or flanges, to fasten 
down platforms, decks, and floorings, or 
other attached parts, ta be formed of any 
figure, from the square to the segment, ta- 
per, twisting, angle-wise, made water- 
tight to prevent their sinking. The thir- 
teenth figure shews the varicus parts 
when combined in the formation of 
houses, wareehouses, or mills, coated or 
not, intervally, or externally, with con- 
siensed earth or artificial stone; and the 
fast figure is the representation of the va- 
New Patents lately enrolled. 
. frame. 
[March 1, 
rious parts, when combined and applied 
to vessels floating in, or on water, or to 
contain any fiuid, coated or not, internal. 
ly, or extérnally with condensed earth, or 
artificial stone. 
eee ere d 
MR. ZACHARIAH BARRATT’S (CROYDON) for 
a Machine for washing Linen, &c. to 
which may be attached a Contrivance © 
Sor pressing the Water from them, in- 
stead of wringing them. 
The machine consists of a wooden 
trough, of a convenient size, for one per- 
son to stand at, with an inclined bottom, 
the inside surface is made uneven, by 
grooves, or projectiuns, ahout an inch as- 
sunder. The ribs of the grooves are hol- 
lowed, so as to give them a wavy appear- 
ance, and into the hollaws may be intro- 
duced small pieces of buff or other elastic 
substance, which in the operation of 
washing are supposed to act in a similar 
manner to the human fingers. A hole is 
made in the bottom of the trough to let off 
the sudswhendone with. On the inside of 
the trough, and parailel with its ends, a 
roller is fixed on centres, covered with 
cork, leather, or other soft substance, to 
prevent noise in the operation of washing, 
which operation is performed by a person. 
pressing the cloathsin the trough, with a 
loose board called an agitator, the under 
side of which is supported by, and moves 
on the roller above-mentioned, This agi- 
tator is constructed ef one or more pieces 
of board, two feet six inches long, fra- 
med together so as to forma flat surface, 
nearly of the width of the interior, having 
two holes or spaces cut out in the upper 
end, for the operator’s hands. The lower 
end, about an inch high, is covered with 
leather, cork, or other fit.elastic soft ma- 
terial, with one or two pieces projecting 
at the bottom, similar to those in the hol- 
low parts of the grooves, in the inside of 
thetrough. Across the top of the trough 
isa strong bar, or snelf of wood, on which 
may be placed an apparatus of any proper 
construction for pressing out the water, to 
be used as a substitute for wringing: this 
apparatus is a box, or tube, into which the 
wet things may be put, and the water 
pressed out by a piece of wood, of the 
size nearly of the interior of the box, at- 
tached to the end of a screw fixed in a 
A lever, or other means of crea- 
ting a pressure, may be adopted, but ifa 
screw is used, it should be encircled with 
_a cylinder of leather, to keep it free from 
wet, which would render its action stiff. 
and unpleasant, VARINUES 
i cL ; 
