Year: 1891

page_text: plate L. is recessed and inclined at each end and side of the recess, the handle is
thus protected and the passengers enabled to operate the same and open the door
from the inside without lowering the window, or putting the hand outside the
carriage.
The modus operandi of the lock is as follows:-When the door is open, the tip of
the sliding bolt B. projects beyond the face of the lock flange C. the sliding bar H.
also projects beyond the face of the flange C; both these projections perform at the
proper time important functions.
In the act of closing the door, the tip of the sliding bolt B. first comes in contact
with the inclined plane P. on striking plate M. and is thereby pushed slightly back-
wards within the lock, thus relieving the friction of the arm F. against the indent E.
The projection of H. beyond the face of the flange C. then comes in contact with
the inclined plane R. on the striking plate M. and frees the arm F. from the
indent E. when the sliding bolt B. is "shot" into the recess in the striking plate
by means of the compressed spring S. and the door secured.
In the act of opening the door, the sliding bolt B. leaves the inclined plane P.
last and ensures the pushing back of the sliding bolt B. within the lock, until the
arm F. engages with the indent E. and secures the bolt B. The door will not open
then, as the tip of the tongue of the sliding bolt B. still projects beyond the face of
the flange C. and is to that extent engaged with the striking plate; therefore the
sliding bolt B. must be further withdrawn within the lock by the inside or outside
handle.
The pinion D. is prepared with a stop T. which fixes the position the sliding
bolt B. must be in before the door can be opened and relieves the teeth of the
pinion of unnecessary strain.
When the door is closed, by placing the long portion of the outside handle 1 to 2
in Fig. 10. in the same direction as the sliding bolt B. the handle will indicate the
position of the said bolt, thus showing when the door is closed, that the sliding
bolt B. is engaged with the striking plate, it being impossible to shut and secure
the door without the outside handle turning into the horizontal position, and
thereby indicating that the sliding bolt B. is engaged with the recess in the striking
plate.
In the case of a lock for the doors of vehicles drawn by horses, the inside handle
moves in the arc of a circle, in my improvement the sliding bolt is actuated in the
inside of the vehicle by a lever supported by a fulcrum pin.
Fig. 11. represents the interior of a lock made according to my invention showing
one arrangement of inside handle.
Fig. 12. a similar view with the sliding bolt withdrawn, and
Fig. 13. a plan of the lock.
According to this arrangement the inside handle lever K. is supported by
fulcrum pin N. the arm of the handle lever being curved to clear the mechanism of
the bolt, and is provided with a projection Q. which engages with a recess cut in.
sliding bolt B..
On moving the handle lever K. in the direction of curved arrow, the sliding
bolt B. is withdrawn from the striking plate, thereby allowing the door to be
opened, the sliding bolt being retained by arm F. engaging with the indent E. in
the manner as hereinbefore described.
On the occupant of the vehicle sitting with face towards the horse operating the
inside handle lever K. for opening the door, the force exerted to overcome the
friction of the lock tends to keep the door closed, but by constructing the lock as
shown on Sheet 3. the force exerted by the occupant on the handle lever in having
to push it towards the horse when releasing the sliding lock bolt B. from the
striking plate, tends to open the door as soon as the sliding bolt is clear of the
striking plate; this last mentioned arrangement of lock is shown by Fig. 14. which
represents the interior of a lock with the sliding bolt protruding the full distance
beyond the lock case flange.

page_text: Fig. 15 is a similar view showing the sliding bolt withdrawn and retained in that
position, and
Fig. 16. is a plan of the lock.
According to this modification the sliding bolt B. is held back as shown by
Fig. 15 by the arm F. engaging with the indent E. and is liberated therefrom on
the end of sliding bar H. coming in contact with the striking plate.
The lock as before described, is operated from the outside by a handle, the latter
engaging with the tongue R' which, on being moved in the direction of curved
arrow, operates by means of connecting rod U. the handle lever K. on fulcrum
pin V. and thereby the sliding bolt B the end of the handle lever engaging with a
recess W. cut in the said bolt.
On the arm F. being moved clear of the indent E. and the end of sliding bolt B.
opposite opening through striking plate, the said bolt is operated by the compressed
springs S. forcing the tongue R' to the position shown by Fig. 14. against the inner
surface of lock flange C. and thereby securing and wedging the door tight within
the frame.
Having now particularly described and ascertained the nature of this inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :---
1. The sliding bolt B. combined with the inside handle K. and guard plate L.
arranged substantially in the manner and for the purpose as hereinbefore
set forth.
2. The combination of the parts forming the complete lock arranged substan-
tially as and for the purpose herein set forth and illustrated by the accompanying
drawings.
3. In a lock in which the sliding bolt B. indent E. arm F. sliding bar H. com-
pressed springs S. are combined with the handle lever K. all arranged substantially
in the manner and for the purpose as hereinbefore set forth.
4. In a lock in which the sliding bolt B. indent E. arm F. sliding bar H. are
combined with the handle lever K. connecting rod U tongue R¹ and compressed
springs S all arranged substantially in the manner and for the purpose as herein-
before set forth.
-
JOHN WAUGH,
Agent.