The Trials of Light Portable Motors at Plymouth. 
581 
No. in ( a ) Motors using Solid Fuel. 
Catalogue v ' J 
3487 Adams & Co., Cattle Market Road, Northampton. Vertical Steam 
Engine, and Boiler, price 115/. 
3492 Simpson, Strickland, & Co., Dartmouth, Devon. Light Fortable Engine, 
Kingdon's Patent, price 100/. 
3496 E. R. & F. Turner, St. Peter's and Grey Friars' Works, Ipswich. 
Steam Engine, Vertical Portable, price 84/. 5s. 
(b) Motors using Liquid or Gaseous Fuel. 
3183 Brown & May, North Wilts Foundry, Devizes. Portable Paraffin 
Engine, l-llorse power, Knight's Patent, price 100/. 
3513 Friestman Brothers, Limited, Holderuess Foundry, Hull. Oil Engine, 
5-Horse power, price 235/. 
Conditions op Tkial. 
The trials of tbese engines will be generally similar to previous trials of 
6team engines by the Society. The indicated and brake-horse-power will 
be ascertained ; tbe fuel and water consumption per borse-power will be 
measured, and due attention given to general design, excellence of workman- 
ship, and uniform working of the engine. 
The adaptability of each engine for general purposes on a farm will be 
considered, especially as regards simplicity of design, strength, and dura- 
bility. 
Engines indicating beyond five brake-horse-power will be disqualified. 
The following will be the points awarded in each of the two classes, 
a and b: — 
1. Cost .15 
2. Simplicity, workmanship, and durability . 15 
3. Lightness of weight combined wi th strengtb . 5 
4. Governing power ...... 5 
5. Facility of transport 10 
G. Fuel 15 
7. Water consumption 10 
8. Efficiency 15 
9. Economy in getting to work and attendance . 10 
100 
In the first sub-class three steam engines were entered for 
competition. Two were single cylinder inverted engines with 
vertical boilers. The third was a tandem compound inverted 
engine with a vertical tubular boiler. It is very disappointing 
that so few engines were entered. Amongst the three engines 
submitted to them, the Judges had no difficulty in deciding the 
order of merit ; but it may be confessed that it would not be 
difficult to indicate how an engine might have been built which 
would easily have been placed higher in order of merit than any 
of those exhibited. It is also perhaps to be regretted that no 
hot air engine was placed in competition with the steam engines. 
Under the terms of the competition, a hot air engine of 1 or 2 
horse-power might have been entered, and the comparison of 
