ROS 
gime, andhis new. invention .confifts in 
canneéting together the upper and lower 
valves fo as to work with one rod or {pin- 
die, and in makivg the fiem or tube which 
connect them holiow, and ferving as an 
eduction pipe to the upper end of the cy- 
Ender. “T'wo valves thus antwering the 
purpofe of four, 
Fourthly, he confru€tsa rotative team 
engine on anew plan, and to which it 
‘would be impoffible for us to do juftice 
without the aid of copper-plates. We 
fhall therefore refer the curious and in- 
terelied part of our readers to the draw- 
sngs and ipecification at the Petty Bag 
Oifice, in Chancery. 

MR. GILZISPIE’S FOR PRINTING 
CaALI@Ons: . ; 
Mr. Winniam Gibbispigz, of Ander- 
fon, near Giafgow, Caiice-printer, for an 
mmproved method-and-procefs of printing, 
colouring, or faining, linens, calicoes, oF 
ether cloths. Dated April 30. 1799. 
. Fhe meilrod or procets which Mr. Gil~ 
hifpie invented, is chiefly difltinguifhed 
from the method or procefles already prac- 
tied in printing cloths, by its enabling 
the printer, on coloured grounds, to pro- 
duce figures or {pots, confiltigg of white, 
with or without a variety of colour, or co- 
foured figures or {pots ; and to place thele 
feures or fpots, whether they confilt of 
wiite, or any colour or colours, upon the 
goods, in as exact and determinate a ccr- 
xefpondence of fituation, with regard to 
each other, as.the coloured figures printed 
.@n white grounds in the ordinary way. 
Bor obtaming which. objeét, inftead of 
wfing bleached cloths in their fimple whit- 
ened fig:e, and printing, imprefling, or 
laying on them, in this ftate, fuch fub- 
faneceas are fit for making the particular 
fpets or figures, meant to be imprefled or 
veprefented on the faid cloth, capable cf 
being dyed, and cf retaining colours; and 
wtead of peinting, imprefling, or laying 
en the faid cioths, in the faid whitened 
fate, fuch acids, or other fubftances, as. 
are capable of preferving the particular: 
fpots or figures, fo meant to be impreffed 
ex reprefented’on the {aid cloths, from be. 
ine-dyed, that is,. preventing them from 
retaining colours, and:confequenily keep- 
ing the faid laft-mentioned fpots or-figures 
white. He fri, by means of a blotehing 
machine, or by any other convenient me= 
thod, nnpregoates the cloths he is.to print 
with a proper mo:dant or. cclour-Axirg 
fubliance. He then-dries the cloths, and 
afterwards rinfes or otherwise frees them 
trom: the gum, onother {upertluousanatter 
New Patents lately Enrolled. 
‘ [ Jan. }, 
mixed with the mordant. Then, after 
again drying and properly {moothing them, 
he prints, imprefics, or lays on fuch parts 
of the cloths as he wifhes to remain ulti- 
mately white, fome vegetable acid, or 
other fubftance capable of difcharging the 
mordant, or of dettroying its effeéts in fix- 
ing colours en the parts fo printed, im- 
prefled, or covered with fuch vegetable 
acid, or other fubftance. If he wifhea to 
have ancther colour or other colours in the 
faid cloth, befides the ground-colour and 
white, then, either before or atter laying 
on the fard acid, or other fubftance for de 
{troying the mordant or ‘its effects, he 
prints, impreffes, or lays on the cloths, 
fuck other mordant or mordants as may be 
neceffary and proper for producing, along 
with the ground-colour, and the figures or 
{pots in white produced in the way above 
mentioned, when the cloths are dyed, @ 
variety of colours, or fpots or figures, en 
the part fo printed, imprefled, or covered 
with fuch other mordant or mordants. If 
he does not wifh to produce acy white 
figures or {pots on the cloth, he omits the 
procefs above: detailed for this purpofe, 
namely, the printing, imprefling, or laying 
on the cloths fome vegetable or othet 
acid, or other fubftance capable of deftroy- 
ing the mordant, or the effeis of the 
mordant, with which they are at fic im- 
pregnated; and, in this cafe, be-prints, 
mmpreffes, gr lays-on the cloths-the othen 
mordant or mordants above mentioned 3 
which produce, when the cloths are dyed, 
a variety of colours.or figures on the parts 
fo printed, impreffed, or covered! with the 
other or laft mentioned mordast-or mor- 
dants. The number and. variety of fpots 
and foures may be: thus multiplied and 
varied at pleafure, by the application of 
appropriate or correfponding mordants. 
Aster the cloths. haveundergone the opera- 
tions above mentioned, in thedifferent cafes. 
above detailed, they-are dried, and them 
rinfed and cleaned, and afterwards. dyed, 
or the colours railed, in the ufual or com- 
mon WAY. . 
The So:lowing: is. a detailed account o 
an. operation ot printing by. this method, 
—Afierthe cloths have been whitened, . 
bleached, or fitted as,ufual for printing, 
they are run through.a blotching machines 
or otherwile. impregnated: with a mordant 
or colouring fixing fubftance; fuch mor- 
dant being varied, according to the par- 
ticular colour intended to be afterwards 
dyed, or brought up, by means of proper 
dying ftuffs, well knowa to printers. The 
cloths are next to be dried, and then rinf- 
ed through warm water, with or waibens 
5 other 
