1825.] 
at one end, and haying a cylindrical hollow 
through the other part of its length; the 
open end of this rocket is tapped for a 
screw-plug of iron, having a small cylindrical 
hole through its length: into which small 
hole a fusible plug is driven. 
the screw-plug projects, and on to it a 
short cylinder of iron is screwed, having 
attached to it two long slender iron rods, to 
act as guides to the motion of the rocket 
through the air. A furnace is described 
for heating and discharging these rock- 
ets, which has a’ straight cylinder of 
cast-iron, open at both its ends, a little 
larger within than the outside of the 
rocket, and passing through the hottest 
part of the.fire, with such a degree of in- 
¢lination upwards as the range of the mis- 
sile may require: then, the fire being light- 
ed, and the rocket placed. within the heat- 
ing cylinder, the discharge will take place’ 
at the instant when the small fusible plug 
gives way. 
Novel, ingenious and important, as 
some may deem those and other applica- 
cations of heated water in a confined state, 
on which Mr. Perkins says so much and 
does so little to any practical purposes, 
the writer cannot bring himself to view his 
throwing warlike missiles, by this means, 
in any other light than a retrograding 
from the unfortunately too well esta- 
blished trade of using gunpowder in pro- 
pelling instruments of human destruction. 
A List or tHe Parents which, having beew 
granted in August 1811, will expire in 
' the present Month, viz. 
Aug. 3.—To P. Durarp, of Hoxton- 
square, Middlesex: for rendering the light 
of lamps soft and agreeable to the eye. y 
7.—To J. Asuty, of Homerton, Mid- 
dlesex; for an improved filtering-vessel, tor” 
water. i ‘ , 
7.—To T. Gireerr, of Great Yarmouth, 
Norfolk : for improved machinery for deliver- 
ing -bricks, tiles or pottery-ware from their® 
moulds, i 
7—To H.R. Brown, of Edinburgh: 
for improved wheels, axles, boxes, and other 
parts of wheel carriages. 
7—To W. Tay tor, of Gomersal, York- 
shire: for a check or stop for wheeled-car- 
riages’ motion, regulatable by the driver. 
7.—To J. Maciony, of London:: for a 
shearing machine, for cutting the nap of 
woollen cloths. : 
-1.—To W. Davis, of Bermondsey-street, 
Surrey: for a machine for chopping sausage- 
meat, and other like purposes. 
20.—To J: S. Jonven, of Birmingham, 
Warwickshire: fora new method of glazing 
hot-houses, green-houses, &c. $ 
44 List or Naw Parents, granted in 
-  — May and June 1825.: 
May 31.—To W.H. James, of Winson- 
green, near Birmingham: for improvements 
in apparatus for diving.—Six, months, 
Lists of Expiring and New Patents. 
A part of | 
53 
81.—To J. H. Saprer, of Hoxton, Mid- 
dlesex: “for an improved power-loom for 
weaving silk, cotton, linen, &c.—Six months. 
31.—To J. F. Lensum and B. Coox, both 
of Birmingham: for improvements in the ° 
production and purification of coal-gas.—Six 
months. 
31—To J. CrowvrEr, of New Badford, 
Nottingham: for improvements on the pusher 
bobbin-net machine.—Six months. 
June 6.—To J. Arspren, Leeds: for a 
new method of making-lime-——Six months. 
‘6—To C. Powert, Rochfield, Mon- 
mouth: for an improved blowing machine.— 
Six months, 
7.—To A. Bernon, of Leicester-square : 
for improvements in fulling - mills. — Six 
months. 
9.—To M. Poot, Lincoln’s-inn: for 
an invention for the preparation of cerlain 
substances for making candles, including a 
wick peculiarly constructed.—Six months. 
9.—To J. Burriver, of Nelson-square, 
Blackfriars-road: for improvements in brick 
houses, for their better ventilation. —Six 
months. 
14.—To J. Linpsay, of the Island of 
Henue, near Guernsey: for improvements 
in the construction of horse and carriage-ways, 
and an addition to the wheels to be used 
thereon.—Six months. 
14.—To W.H. James, of Winson-green, 
Birmingham: for improvements in the con- 
struction of steam boilers, for steam engines.— 
Six months, 
- 18.—To J. Downton, Blackwall: for 
improvements in water-closets.—Six months. 
18.—To W. Mason, Castle-street, Ox- 
ford-street : for improvements on atle-trees.— 
Six months. : 
18.—To C. Puiurs, of Upnor, Kent: 
for improvements in the construction of a 
ship’s compass.—Six months, ] 
18.—To G. Arxins, of Drury-lane, and © 
H. Marzuorr, of Fleet-street : for improve- 
ments on, and additions to, stoves or grates.— 
Six months. : ‘ , 
18.—To E. Jorpan, Norwich: for a 
new mode of obtaining power, applicable to 
machinery,—Six months. 
21.—To J. Tuomrson, of Vincent-square, 
Westminster, and ‘J. Bann, of Halesowen, 
near Birmingham; for an improved mode of 
producing steam.—Six months. 
21.—To T, Worruincron, jun., and J. 
Muttins, both of Manchester: for improve- 
ments in the loom used in weaving tape— 
Six months. 
21.—To R. Corszert, of Glasgow: fora 
new step or steps for coaches and other car- 
riages.—Six months. 
21.—To P. Brooks, of Shelton in the 
Potteries, Staffordshire; for an improved 
composition ‘for making dies, moulds or | 
matrices:—Six months, 
21.—To J. F. Smiru, of Dunstan-hall, 
Chesterfield, Derby: for improvements in 
machinery for drawing, roving, spinning, and. - 
_ doubling cotton, wool; fe.—S!x motths, >); 
MONTHLY 
