ee 
{May 1, 
NEW PATENTS LATELY ENROLLED. 
SS 
MR. MAREK ISAMBARD 
(PORTSEA), or Saws and a Getivides 2. 
upon an aif le oved Conjiruciion, jor 
fawing timber in an eafy and expedi- 
tious Manner. 
YE regret exceedingly that the want 
of ficures willnot permit us to do 
any thing like j jutiice to the feveral inven- 
tions defcribed in the fpecification before 
us. “They have been applied to many im- 
portant purpofes, particularly to the ma- 
nufacturing of fhips’ blocks, which are 
made from the rough timber, to the Jatt 
finihh, by means of machinery that re- 
quire little or no mechanical {kill in the 
conduét of it. 
‘© The improvements,’ 
fays the pa- 
Fentee 1 EGE 
machinery tor fawing 
timber in an ealy and expeditious manner, 
confit in the modes of Jaying aod hold- 
ing the piece of wood in the carriage or 
drag, in the facility of fhifting the faw- 
from one cut to another, and im the prac- 
ticability, of fawing both ways, either tc- 
wards or from the faw or faws.”” 
The faws are all made of a circular 
form ; and in order to_ combine firength 
with a large diameter, they may be made 
of two or more pieces of fheet feel, pro- 
perly adjuited and fixed together, A faw 
reprefented in the {pecification is made of 
eich t pieces, firted together at the edees, 
and icrewed againit a flanch, which has 
been previo" nily turned very Bat : the holes 
through which the fcrews pals are cut 10 
an oblong form, in order to admit cf 3d- 
juftment. When the plates have been 
faftened to the flanch, another flanch is 
Jaid upon them ; and in order to make it 
fit, and bear with equal power upon each 
plate, feveral thicknefles of paper or lea- 
ther, of the fize of the flanch, are piaced 
between it and the plates. The flanches 
are fafiened togetrer by means of Screws, 
but before they are ferewed tight the piites 
are drawn in concentrically by wedges to 
clofe the joints. 
The circular faw is adjufied upon 2 
a 
fpindle cf a cylindrical form, which turns 
within rodings, either with a ftrap or band, 
and moved with any power, as wind, wa- 
ter, fteam, &e. ‘The log or timber to be 
fawn, is placed upon a drag or Carriage, 
and held faft by means of clamps. The 
carriage or drag is moved to and irom the 
faw by a handle or crank, communicat- 
ing, by the afliftacce cf cog-wheels, toa 
pinion, which engages in a rack. The 
drag or carriage isfuraifhed with rollers, in 
BRUNEL’S | 
order to eafe its longitudinal motion, and’ 
is intended to be moved by hand, to acce-' 
lerate or ffop it at pleafure, 
When the aw has performed cone cut, 
itis fhiftead to the next. 
fawing timber requires no faftening to the 
log when it is intendedto-be flabbed, ex- 
cept when the log-is creoked, in which 
cafe it may. be forced ftraighter by the af- 
fiftance of cramps. 
There are circular wedges intended to 
follow the cut opened by the faw, and by 
that means to reals the fri€tion, and to 
fieady the piece of wrod. 
wedges move collaterally when fhifted, in 
order to meet with the next cut of the faw. 
The drag or carriage may be moved, and’ 
is ia many cates moved by the fame ma= 
chiaery which gives motion to the faw, 
ee eS 
MR. BARNETT’S (BIRMINGHAM), jor 
an Umbrella Paratout. 
Under the head of Patents; in our 
Number for Auguft laff, we neticed the 
paratout invention; the patentees nave 
now conftrected an umbrella on the new 
principle, which, in point of perfection, 
far exceeded their original expectations 
Inthe works of art as well as nature, fim- 
plicity y is uniformly excelience; and the 
improvements of the article before us are 
regulated by | this leading principle: the 
machinery is firm becaufe it is imple, and 
the j jo: nts play with jreedem and ferctlita 
Simplicity sf ftruéture is not the only 
thing attained, bur increafed elegance of 
Gua and utility of application. 
ample fpread of tbe umbrella prratout, 
its dome-i:ke canopy, afford effectual thel- 
ter, without the leait annoyance: and 
fuch is the conftrustion, that by a rapid 
aiteration of form, witheut change of po- 
ition, it will completely protect any part 
of the body from ‘tise inclemency of the 
weather, without the inconvenience of 
expoiing feme other pari—an incenveni- 
ence infeparable from the common um- 
prella. ‘The ut ility, therefore, of this 
new inventicn ia open carriages and 
crowded — firects, particularly in tormy 
and windy weather, neess no farther: il- 
luftratien.. = . fee " 
Eee 
MR. JAMES Boaz’s (GLASGOW), for @ 
new Method: of rating Water, and 
eworring Machinery by Means of Steam. 
The method of 
The circular’ 
The: 
This method confifs in the confruc- ~ 
tion and ufe of an engine, denominated 2 
pumpy 
gf 
4 
