Improvements in Locks.
Year: 1891

page_text: Date of Application, 5th Dec., 1891
Complete Specification Left, 3rd Sept., 1892-Accepted, 3rd Dec., 1892
PROVISIONAL SPECIFICATION.
Improvements in Locks.
FRANK SMITH & CHARLES GRAY SMITH Deritend Bridge Works Birmingham
in the County of Warwick Locksmiths & Art Metal Workers do hereby
declare the nature of this invention to be as follows:-
Our invention partly relates to locks made to indicate under our Patent
No. 3227 A.D. 1888.
1st. That the follower with indicating handle shall throw out the bolt the distance
for the first shoot and draw it in again freely. When the bolt is thrown out the
second distance by the handle (or by the key) it can only be drawn in again by
the use of the key the handle indicating the position (the same would apply to
the 1st shoot if necessary). If the key only is used a separate indicator may be
applied.
2nd. That when the bolt of a lock is thrown out and drawn in by a handle
a special arrangement of a separate bolt & levers may be used applied in such a
way that the action of the key will make the main bolt fast & prevent it being, shot
by the handle.
3rd. A separate indicator may take the form of a semaphore worked by a lever
or by a rack. A second arrangement is for the indicator simply to rise in a slide
by the tumbler or lever of the locking action acting underneath the same.
4th. An indicator for any horizontal motion in a lock or bolt may be applied
by a simple slide piece projecting through the face. This is much improved by
the addition of a falling shutter which acts when the horizontal motion reaches its
full extent.
This horizontal indicator may be applied to advantage to a lock in which a
quadrant action is worked by a horizontal screw.
5th. A lock with screw action may be worked alone by a push and pull action
which indicates as above and may be assisted by the use of a lever.
6th. An improvement whereby locks which have a sloping latch and which open
with a key only can be made to answer for either hand by making the working
parts the same as either edge of the bolt so that it may be put in the lock
either way.
7th. An improvement for a lock which springs or works with knob to omit
all steel springs which propels the latch and substitute a vertical dead weight
which acts upon the latch by a crank and is raised by means of the follower
aud knob.
Dated this 4th day of December 1891.
FRANK SMITH.
CHAS. G. SMITH.
COMPLETE SPECIFICATION.
Improvements in Locks.
FRANK SMITH & CHARLES GRAY SMITH Deritend Bridge Works Birmingham
in the County of Warwick Locksmiths & Art Metal Workers do hereby
declare the nature of this invention and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement:-
Our invention partly relates to locks made to indicate under our Patent

page_text: ;
1st. That the follower with indicating handle shall throw out the bolt the
distance for the first shot and draw it in again freely. When the bolt is thrown
out the second distance by the handles (or by the key) it can only be drawn in
again by the use of the key. The handle indicating the position (the same would
apply to the 1st shoot if necessary). If the key only is used a separate indicator
may be applied.
2nd. That when the bolt of a lock is thrown out and drawn in by a handle, a
special arrangement of a separate bolt & levers may be used applied in such
a way that the action of the key will make the main bolt fast & prevent it being
shot by the handle.
3rd. A separate indicator may take the form of a semaphore worked by a lever
or by a rack. A second arrangement is for the indicator simply to rise in a slide
by the tumbler or lever of the locking action acting underneath the same.
4th. An indicator for any horizontal motion in a lock or bolt may be applied by
a single slide piece projecting through the face. This is much improved by the
addition of a falling shutter which acts when the horizontal motion reaches its full
extent.
This horizontal indicator may be applied to advantage to a lock in which a
quadrant action is worked by a horizontal screw.
5th. A lock similar to the screw action may be worked alone by a push & pull
action which indicates as above and may be assisted by the use of a lever.
6th. An improvement whereby locks which have a sloping latch and which open
with a key only can be made to answer for either hand by making the working
parts the
same on either edge of the bolt so that it may be put in the lock
either way.
7th. An improvement for a lock which springs or works with knob & omit all
steel springs which propel the latch and substitute a vertical dead weight which
acts upon the latch by a crank and is raised by means of the follower and knob.
DESCRIPTION OF THE DRAWINGS.
Figure 1. shows a lock with indicating handle A in position to throw bolt B in
and out by means of our improved cam action C which is actuated by the square
spindle b.
Figure 2. shows cam C and bolt B fastened back by the bolt D which can only
be moved back by use of key.
Figure 3. shows bolt B shot once by cam C carrying bolt D & stump F as
shown, the handle A indicating the position.
Figure 4. shows bolt B shot twice or to full extent by the use of the key, the
cam C following and indicating the position of the handle A.
Figure 5. shows the different arrangement of the lever E so as to shoot out bolt B
with indicating handle and draw the same in with key only.
Figures 6. 7. are the front elevations of locks with semaphore indicator F shown
locked & not locked.
Figures 8. 9. are back elevations showing method of moving semaphore. The
bolt G is.connected to the indicator by the crank H.
Figures 10. 11. 12. 13. are elevations of lock showing a rising indicator. The
indicator F is connected to the slide I worked by lever J by means of the key,
the bolt G passing under the projection K, keeping indicator F in position, the
spring K¹ bringing slide I back.
Figures 14. 15. show a form of horizontal indicator L being the indicator which
moves with the bolt M.
Figures 16. 17 show indicator as applied to a lock with quadrant & screw
action. The indicator N is hinged in such a way that when it reaches its full
extent (as shown in Figure 16.) it falls over.
Figures 18. 19. show a simple push & pull action to a lock with quadrant
action, the knob O indicating.

page_text: Figures 20. 21. show same assisted by the indicating lever P.
Figure 22 shows a reversible bolt Q, the gating being cut on both edges R as
shown.
Figure 23 represents the action of an improved weighted lock to work with knoh
and spindle S. A vertical dead weight I is raised by the follower U and crank W.
Figure 24 shows lock with dead weight Z which moves on the fixed centre A¹.
The weight Z is raised by a thumb latch through slot B¹.
Figure 25 shows as above the action of the weight Z¹ being assisted by the
crank X which moves on fixed centre Y.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is:-
1. The silent follower to indicate each shoot of bolt. Also in combination with
levers to allow bolt to be shot with handle and drawn in with key.
2. To secure bolt when unlocked by the special arrangement of levers.
3. Semaphore indicator worked by lever or rack action connected to lock bolt.
Also rising lever worked by tumbler and lever.
4. Horizontal indicator in connection with bolt. Also hinged flap to the same.
Application of the same to a horizontal bolt.
5. Push & pull action with indicator applied to a quadrant bolt. Also a lever
action to assist the same.
6. Preparing the working parts of a lock so that they will exactly reverse and
be used for either hand.
7. Vertical dead weight to act in place of spring also combination of dead
weight on fixed pin with latch.
Dated this 1st day of September 1892.
FRANK SMITH,
Agent for Frank Smith and Charles Gray Smith.