318 On Printing Presses and their Theory. 
ness of movement, the different pages of the same sheet will 
ta neater and more uniform appearance than when 
worked witha wooden platen and two pulls. This remark 
is especially applicable to the duodecimo page. 
4, By admitting a less thickness to the tympan and its 
contents, it produces a less rapid wear of the hair strokes of 
~ letter. 
. The ribs on which the carriage runs have the peculiar 
epacinucton seen in the figure, by which the friction is sash 
-and the waste of oil diminished. 
rom the best estimate which can be made, this press 
wil |in a course of om be attended with an actual saving of 
money to the purchaser 
Many of the aatieL advantages, it is readily conceded, 
are such as this press possesses in common with that of Mr. 
Clymer; but without detracting from the merits of the lat- 
ter, anaes is little danger in hazarding the prediction that its 
anew te: ee aoe and that as it has thrown 
steel. . 
which has been in constant operation nearly two yea ah ‘the "ates ots of 
‘riction were found wholly insignificant. The slight roughnesses which had 
been left on the surfaces by the manufacturer were scarcely affected. It is 
obvious, however, that the wear of many of the parts mig boots i. 
considerable before sed action of the press would be : ek impaired; 
and that others replaced ata trifling expense. The original cost 
common | tert: edi is about one rans teasrceny venty dollars ; and 
the annual expense of maint eae one will consist of the ye es items: in- 
terest on the original cos coe A aber to be replaced, supposing the 
time of w Gehring wats me five years, $6,80; cepa, ee 
t cost of 
pa rticwek etcetera 
testimonial to it be desired. 
a Hi 
. 222 tia ciate? si i F % Si 
a 
