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Northrop, E. B.; Chittenden, H. A., Jr. (ed.) / The Wisconsin lumberman, devoted to the lumbering interests of the northwest
(July, 1874)

Yale Lock Manufacturing Company. Progress of the manufacture of locks and of bronze ornamental hardware--description of one of New England's leading manufactures,   pp. 377-386 PDF (3.1 MB)

Page 378

37Mc Wisconsin lumberman.
construction, having a fiat, folding', key,
but his attention being soon directed to-
wards bank locks, regarding which great
interest was then felt, he for several
years confined his labors to their im-
provement, patenting numerous inven-
tions of great value.
In 18GO Mr. Yale resumed the produc-
tion of key locks for general use, and
soon afterwards patented a style of lock
which, with subsequent improvements,
has since rendered his name so celebrat-
ed. It was of the description called a
"pin lock," identical in some respects
with that previously made by his father,
but possessing the distinctive feature of
a key of thin, flat steel, less than an inch
and a half long, and weighing but a
fraction of an ounce-as shown in the
following cut:
-          FULL S~~IZE Or KEY.
AU other locks then made had large,
heavy keys, as do nearly all others now
manufactured, and the thicker the door,
the longer must oe the key in order to
reach the lock, the following being a
fair specimen of the keys then in use for
heavy doors:
In the Yale lock the escutcheon,Yor
"tumbler case," enclosing the pins upon
which the bits of the key operate, is
placed near the surface of the door, pro-
jecting slightly, so that the long, clumsy
shank of the key is dispensed with, the
bow and bits brought closely together,
and the depth of the escutcheon decides
the length of the key, without regard to form of the lock and many detais
the thickness of the door.         construction of course vary with the in-
In general terms we may designate tended use, and may not differ essential-
the distinctive pecularities of the tale ly from those of other locks except
lock as being the arrangement of the superiority of design and more thorough-
parts acted upon by the key, and the ly finished workmanship.
a bape and size of t he key itself. Ih These prominent features may beillus-

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