Amidon & White, Buffalo, N. Y., have recently put on the market
the article named above, the construction and special features
of which are illustrated in the accompanying cuts, Fig. 13
giving a general view of the brace, and Fig. 12 giving sectional
views, showing the arrangement of the ratchet.
The chuck that holds the bit is connected with a ratchet wheel,
to control which there are two dogs, as shown in the smaller
sectional cuts, Fig. 12. These dogs are operated by a spiral
spring terminated with a pressure-block which keeps them in the
desired position, causing them either to press on the ratchet
wheel, or holding one of them back from it.
One of the sectional views shows them both pressing
against the ratchet-wheel, thus making it immovable, and
rendering the brace suitable for use where the ratchet feature
is not desired. One or other of the dogs can be withdrawn from
the ratchet-wheel, as shown in Fig. 12, when the brace is a
right or left hand ratchet brace, according as it may be set.
When one of the dogs is thus drawn back, it will be observed
that it is held back by the action of the spring above referred
to. This adjustment of the dogs is obviously easily made by the
thumb or finger of the operator.
The manufacturers call attention to the advantage there is in
having the dogs stand back of the ratchet-wheel instead of at
the side, as in other braces, making it, it is claimed, much
stronger. They also allude to its simplicity, and the fact that
it has no objectionable projections that can interfere with its
use. This article is put on the market with special claims as to
its desirability. It is made with 8, 10, 12 and 14-inch sweep.
Knudsenís Bit Brace
Mechanic and World of Science - Vol.56.
Improvement in Braces and Wrenches - Carpentry & Building,
Combination Corner Brace
- Lancaster Machine and Knife Works, Lancaster, NY