In
justice to my fellow-farmers I ought to publish these certificates and
the names of these boilermakers to the world, but, for the present at
least, I refrain from so doing. These boilermakers will see this article
and they will know, if the public does not, for whom it is intended. If
it has the effect of making them exercise more care in the construction
and fitting up of their engines and boilers, I have not written in vain.
D. FREEMAN.
Los Angeles, Cal., March 7,1884.
[The two bolts and the certificates above referred to accompany the
letter of Mr. Freeman. We can only wonder how it was that, after having
been treated as he relates in the first instance, he should have had any
further business with parties who would send out such boilers, for the
testimony of the engineer and workmen make the case even stronger than
Mr. Freeman has put it.--ED.]
* * * * *
A THREADED SET COLLAR.
There are cases where a long screw must be rotated with a traversing nut
or other threaded piece traveling on its thread a limited and variable
distance.
Pages:
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64