IMPROVEMENTS IN LOCKS AND CATCHES OR STAPLES CONNECTED THEREWITH
Year: 1867

page_text: PROVISIONAL SPECIFICATION left by Henry John Saxby at the Office
of the Commissioners of Patents, with his Petition, on the 7th May
1867.
I, HENRY JOHN SAXBY, of John Street, Woolwich, in the County of Kent,
do hereby declare the nature of the said Invention for "IMPROVEMENTS IN
LOCKS AND CATCHES OR STAPLES CONNECTED THEREWITH," to be as follows:-
My improvements in locks relate to the peculiar action of the bolt or bolts
which in place of moving at right angles to the pipe or stem of the key is so
arranged as to move at right angles or nearly, so to the "bit" of the key, or
in a curved line nearly parallel to its stem or axis, the locking or projecting
portion of the bolt passing out at the front or back of the lock case in place of
at the ends or edges as heretofore. For this purpose the nose or locking part
of the bolt is placed or fixed at right angles to the plate or part of the bolt
within the lock case, such inner part of the bolt having motion imparted
thereto by suitable mechanism in order to protect or withdraw the nose of the
bolt. The mechanism for actuating the bolt or bolts so as to move as above
stated and be retained in either position in accordance with my improvements
may be considerably varied; but in order that this part of my Invention may
be better understood I will describe an arrangement of mechanism suitable for
actuating the bolt or bolts in this manner as applied to a lock of comparatively
simple construction.
The inner end of the bolt is hinged or mounted upon a pin joint on which
it moves from front to back of the lock case. The "bit" of the key in its

page_text: rotation actuates the slide and a tumbler; the slide in moving acts upon one
arm of cranked lever moving on a pin fixed on the lock case. A pin on the
bolt enters a slot in the other end of the cranked lever, which thus com-
municates a vibratory. movement to the bolt upon its axis_or_joint.from-front-
-to-back-of-the-lock case. Each time the bolt is moved a projection upon the
tumbler falls either in front or at the back of the bolt to retain it in one or
other position, other projections upon the tumbler coming against the inner
surface of the lock case to resist pressure and to guide the tumbler in its
movement. If desired the tumbler may be dispensed with and a spring
employed to keep the bolt in the locked position, an ordinary striking plate
being fixed on the door frame.
My improvements-in catches-or-staples consist in jointing or binging that
part of the catch or staple which-retains the nose of the bolt in such manner
that it will under ordinary circumstances securely retain the bolt of the lock,
but when it is desired to release the bolt the hinged part of the catch or staple
can be pressed back so as to release the bolt when required. The moveable
catch is kept in position by a spring, and may if desired be fixed by a sliding
bolt or other fastening. I prefer to form the opening in the catch or staple
for the reception of the bolt much wider than the nose of the bolt, so as to
admit of considerable variation in the position of the bolt in relation to the
catch or staple. This part of my improvement is applicable to catches or
staples for retaining the bolts of locks of ordinary construction, but the
improved construction of locks and catches or staples previously described
will be found to be particularly suitable for being applied to cabin and other
sliding doors, windows, or other purposes where the parts move in a direct
line.