476 
Report  on  the  Exhibition  of  Implements 
Report  of  the  Judges  on  the  Tile  Machines. 
The  following  five  machines  selected  for  trial  were  first  tried 
at  screening  unground  clay,  but  it  was  so  full  of  gravel  that  the 
screens  were  immediately  clogged  with  it.  They  were  then  tried 
with  the  ground  clay,  which  contained  a sufficient  quantity  of 
gravel  to  test  their  merits  in  the  screening  process.  Clayton’s 
screen  has  circular  apertures ; the  others  have  parallel  bars  of 
round  iron,  and  their  sizes  and  the  results  of  the  trial  are  shown 
in  the  following  table  : — • 
Name. 
5 
a 
M 
Article. 
Size  of  Aper- 
tures. 
Area  of  whole 
of  Apertures. 
Lbs.  of  Clay 
screened. 
Men. 
iO 
O 
« 
Time. 
Quality  of 
Work. 
Whitehead  . 
17 
2 
inches. 
3/16 
inches. 
69 
561 
2 
1 
min. 
5 
Very  good. 
Clayton  . 
9 
1 
5/16 
42-24 
715 
2 
2 
Do. 
Scraggs  . . . 
21 
1 
7/32 
53-20 
591 
2 
• • 
Do. 
Williams  . 
2S 
10 
3/8 
90-45 
281 
1 
1 
• • 
Indifferent. 
Not  tried. 
Ainslie’s  machine  was  selected  for  trial,  but  having  no  screening 
apparatus  it  was  obliged  to  be  rejected. 
The  other  machines  were  then  tried  in  making  1^-inch  pipes, 
with  the  following  results — (time  of  trial  ten  minutes)  : — 
Name. 
Stand. 
Article. 
Length  of 
Pipes. 
Diameter  of 
Pipes. 
Number  of 
Pipes  made. 
Men. 
Boys. 
Time. 
Quality  of 
Pi  pes . 
Whitehead 
17 
2 
inches. 
13* 
inches. 
i* 
724 
2 
2 
min. 
10 
Excellent. 
Clayton  . 
9 
1 
13* 
i* 
539 
2 
2 
Good. 
Scraggs  . . . 
26 
1 
13* 
if 
350 
2 
Do. 
Williams 
28 
10 
12* 
i* 
180 
1 
l 
Do. 
Clayton  . . 
9 
3 
13* 
i* 
418 
1 
2 
Very  good. 
The  outside  pipes  from  Williams’s  machine  were  mostly  imper- 
fect, which  accounts  for  the  small  number  produced.  Clayton’s, 
art.  3,  is  a copy  from  Whitehead’s  machine. 
The  next  trial  was  with  9 -inch  pipes,  but  it  could  not  be  con- 
'dered  a fair  one,  as  Whitehead  had  not  a horse  on  which  to 
'ive  them  less  than  27  inches  in  length,  and  consequently 
