List of Patents for new Inventions, 47} 
ther that they will take up less room than any other kind 
of pumps, and will raise more water on board ships, or on 
land, than can be raised in the same space of time by any 
chain-pump, (which requires 70 men to work them on board 
aman of war,) and will also raise more water than any 
steam-engine can do in the same time. The construction 
of the machine is simple, but powerful, and as quick in 
motion as the working pumps will admit of, and can be set 
up at a small expense, The Jetter further points out the 
great utility of such machines, particularly on board ships 
of all descriptions, in breweries, in distilleries, and for many 
other purposes. This machine is wrought by a rotatory 
motion, with easy labour for one man. — 
The same person has invented a churning machine work- 
ed by rotatory motion also. 
+ Va ai —_—— 
9LIST OF PATENTS FOR NEW INVENTIONS. 
To John Dobson, of the town and county of Newcastle- 
upon-Tyne, upholsterer, for certain improvements in the 
manufacture of rudder-bands and bolts for shipping.—May 1, 
To John Moore, of Newington Causeway, in the county 
of Surry, Jace-net-mgnufacturer, for a machine or machines 
for the manufacture of gold and silver twist, silk, cotton, 
or thread, twisted lace-net, similar to and resembling the 
Buckinghainshire and Northamptonshire lace as made by 
the hand with bobbins on pillows, and for making iron, 
brass, of edpper wire-net.—May 1. 
To Joh Ball,’ of Hethersett, in the county of Norfolk, 
engineet; for his improved cooking stove.-—May 7. 
To Thomias Cranfield, of Ilminster, in the county of 
Somerset, for his improvement upon machines for spinning 
and roving of cotton, flax, tow, hemp, wool, and silk, and 
twisting of thread.+-May 7. 
To Thomas Jonés, of Oxendon-street, Piccadilly, in the 
county of Middlesex, mathematical instrument-maker, for 
his new instrument for dividing lines and distances, which 
aed useful to mathematicians, architects, and draftsmen. 
-—May 9. 
_ To Griffin Hawkins, of Water-lane, Tower-street, in the 
city of London, ship- and insurance-broker, for his appa- 
ratus calculated for the better defence of ships and vessels 
of different descriptions against being boarded or taken pos- 
session of by an enemy.—May 9g. 
To William Gilpin, of Wedges Mills, near Litchfield, in 
the county of Stafford, auger-maker, for his improyed me- 
thod of manufacturing augers.—May 16, 
re) 
