Improved Carriage Lock.
Year: 1889

page_text: Date of Application, 19th Sept., 1889
Complete Specification Left, 18th June, 1890-Accepted, 19th July, 1890
PROVISIONAL SPECIALIZA
Improved Carriage Lock.
I, WILLIAM HAMILTON BLAKENEY, of Edengrove, Arbroath Road, Dundee, in the
County of Forfar, Engineer, do hereby declare the nature of this invention to be as
follows:-
My invention relates to improvements in carriage locks and is specially applicable
to railway carriage doors.
The objects of my invention are: first, to simplify the arrangement of the lock and
the general construction of same. Second, to render it essentially automatic, with the
least possible chance of its getting out of order. Third, to combine in one piece the
releasing catch and bolt, and to make the inside handle not liable to unlock the door,
unless specially intended. Fourth, to lock the door close.to the locking bolt and thus
avoid twisting the door frame should any person try to open said door when it is
locked. Fifth, to have on the outside of the door an automatic attachment which,
when the door is locked will show the word "locked" and thus let passengers
and others know that the door is locked, and keep them from pulling and damaging
the door.
According to one imodification, I carry out my invention in the following
manner:
Within a case, fitted into the frame of the door is a shooting bolt, which is made
to shoot out by means of a spring or springs and its movements are controlled by
outside and inside handles, upon which are cambs or cranks. Fastened to said bolt
and moving with it is a spring bolt, which engages with a catch, when the shooting bolt
is made to slide back against the resistance of the spring or springs and thus keep it
there, until the door is closed. When that takes place the shooting bolt is pushed
still further inward by means of an angled plate on the fixed door post, thus clearing
the spring bolt from its catch. After the spring bolt is cleared from its catch the
side of said spring bolt comes against a plate on the fixed door post and immediately
afterwards the shooting bolt comes opposite its socket, and is pushed therein by means
of the before mentioned springs.
I fit within the lock case a cab which may be made to press against a projection
on the shooting bolt, by turning same with a key and thus lock the door. Attached
to said camb is the indicator for showing that the door is locked.
01
L1000
GEO. C. DOUGLAS & Co.,
41, Reform Street, Dundee, Applicant's Agents.
GEO. C. DOUGLAS & Co.,
41, Reform Street, Dundee, Applicant's Agents.
COMPLETE SPECIFICATION:
Improved Carriage Lock.
I, WILLIAM HAMILTON BLAKENEY, of Edengrove, Arbroath Road, Dundee, in the
County of Forfar, Engineer, 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:-
My invention relates to improvements in carriage locks, and is specially applicable
to railway carriage doors.
The objects of my invention are:-First, to simplify the arrangement of the lock
and the general construction of same. Second, to render it essentially automatic,
with the least possible chance of its getting out of order. Third, to combine in one
piece the releasing catch and bolt, and to make the inside handle not liable to unlock
the door, unless specially intended.

page_text: Fourth, to lock the door close to the locking bolt and thus avoid twisting the door
frame should any person try to open said door when it is locked.
Fifth, to have on the outside of the door an automatic attachment which, when the
door is locked will show the word "locked" and thus let passengers and others know
that the door is locked, and keep them from pulling and damaging it.
The accompanying sheet of explanatory drawings illustrates the method of carrying
out my invention, according to one modification.
Figure 1. represents a side view, and
Figures 2. 3. and 4. represents sections of the lock at A. A., B. B., and C. C.
respectively.
Figure 5. represents a view looking on D. D. and
Figure 6. a view of the face of the angled plate.
In these drawings the same reference numerals are used to mark the same or like
parts wherever they are repeated.
Within a case 7., fitted into the frame of the door 8. is a shooting bolt 9. which is
made to shoot out by means of a spring or springs 10. and its movements are con-
trolled by an outside handle 11. and an inside handle 12. upon which are cambs or
cranks 13. and 14. Fastened to said bolt 9. and moving with it is a spring bolt 15.
having a projection 19. which engages with a catch 16. when the shooting bolt is
made to slide back against the resistance of the spring or springs, and thus keep it
there, until the door is closed. When that takes place the shooting bolt 9. is pushed
still further inward by means of an angled plate 17. on the fixed door post 18. the
purpose being presuming that the spring bolt 15. was by accident broken off,
the bolt 9. would still hold the door by the amount it was pushed by the previous
movement.
After the spring bolt 15. is cleared from its catch, the side 20. of said spring bolt
comes against a plate 17. and immediately afterwards the shooting bolt 9. comes
opposite its socket 21. and is pushed therein by means of the before mentioned
springs 10.
I fit within the lock case a camb 22. which may be made to press against a pro-
jection 23. on the shooting bolt 9., by turning same with a key, and thus lock the
door. Attached to said camb 22. is the indicator 24. for showing that the door is
locked. 25. are holes for the screws used to fasten the lock to the door frame. S.
and 26. are similar holes for the screws used to fasten the angled plate 17. to its
post 18.
The modification which I have described and illustrated is for railway carriage doors
and is used in the following manner :-
:-
If the door is closed, as is shown in my drawings, then by turning back the outside
handle 1.1. the combined bolts 9. and 15. are drawn from their sockets, and the pro
jection 19. on the spring bolt 15. falling into the hole or catch 16. keeps them from
shooting out again. The same movement may be performed with equal facility by
turning the inside handle 12. In each case the locking camb 22. requires to be out
of gear before these operations can take place. When the door is closed, the side 20.
of the spring bolt 15. coming against the plate 17. permits of the bolts being pushed
into their sockets as I have previously explained.
Having now particularly described and ascertained the nature of my said Inven-
tion and in what manner the same is to be performed, I declare that what I
claim is
(1) In a carriage lock, the general construction, combination and arrangement of
parts, substantially as and for the purposes herein set forth, together with any mere
inodification or modifications thereof.
(2) In a carriage lock, the combination of the shooting bolt 9. with the spring
bolt 15., as herein before described.
(3) In a carriage lock, the combination of the shooting bolt 9., the spring bolt 15.,
and the angle plate 17., substantially as and for the purposes set forth.
(4) In a carriage lock, the combination of the shooting bolt 9., the spring bolt 15.,

page_text: the angled plate 17., and the locking camb 22., substantially as and for the purposes
set forth.
(5) In a carriage lock, the combination of the shooting bolt 9., the spring bolt 15.,
the angled plate 17., the locking camb 22., and the automatic attachment 24., sub-
stantially as and for the purposes set forth.
(6) In a carriage lock, the combination of the shooting bolt 9., the spring bolt 15.,
the angled plate 17, the locking camb. 22., the automatic attachment 24., the outside
handle 11., and the inside handle 12., substantially as and for the purposes herein set
forth.
Dated this 11th day of June 1840
GEO. C. DOUGLAS & Co.,
Applicant's Agents.