514 
Report 011 the ImplemonU 
weighbi-idges of all descriptions exhibited there. We have now 
machines that not only weigh with the greatest nicety the most 
ponderous weights, but also faithfully record the weight upon 
the ticket in clear figures. 
Messrs. Priestman Brothers^ Hull, exhibited a G horse- 
power petroleum portable engine (Art. 5209), the principle 
of which is similar to the horizontal engine exhibited by them 
last year, and fully described in Part I. of the present volume 
(page 94). 
The modifications necessary to adapt it to a portable form, 
and the improvements in detail since last year, were sufficient 
to warrant its being treated as a new implement. The en- 
gine is mounted on a cast-iron bed-plate of special construction, 
Fig. 8. — Fctrohmui Portable Enrjine. 
underneath which, at about the middle of its length, is the 
petroleum reservoir, vaporizer, &c. The water-circulating pump 
is bracketed on to one side of the bed-plate, and is worked from 
an eccentric on the crank-shaft. The air-pump is fixed in a 
convenient chamber under the forward end of the bed-plate, and 
is easily accessible. On this particular engine there are two 
fly-wheels with turned faces, from either of which a belt might 
be driven. The bed-plate is carried on wheels and axles, pre- 
cisely in a similar manner to the ordinary portable engine, with 
the fore-carriage pivoted under the crank-shaft end of engine. 
The whole arrangement is very compact, while all parts are easy 
of access, fulfilling all the requirements of a portable engine for 
farm purposes. Its weight is 65 cwts. The firing is, as before, 
effected by electricity, either by means of a current from a 
primai'y battery or from an accumulator. This latter, when 
charged, will last for about ten weeks, and when recharging is 
required, this may be done at a small cost. 
