Improvements in Fastenings for Exit Doors.
Year: 1891

page_text: Date of Application, 3rd Oct., 1891
Complete Specification Left, 4th July, 1892-Accepted, 24th Sept., 1892
PROVISIONAL SPECIFICATION.
Improvements in Fastenings for Exit Doors.
I, JOSEPH KAYE, of the firm of Joseph Kaye and Sons Limited, of South
Accommodation Road, Leeds, in the County of York, Lock Manufacturers, do
hereby declare the nature of this invention to be as follows:-
This invention relates to certain improvements whereby exit swing doors and
he like are secure when closed, against inlet from the outside, and automatic in
their action as to being opened by persons coming in contact with the door in
a crush or otherwise from the inside.
The bolt of the lock in my improvement is constructed on the same principle
as is set forth in the Specification of Letters Patent granted to me on the
10th of December 1887, and numbered 17,021, and for the special objects of this
invention, I so arrange that on the withdrawal of the bolt, in the case of double
doors, both doors are instantly released.
When it is desired to secure the door, say, in the case of a double swing
door, one door is provided with vertical bolts which are held within the top and
bottom of the door by springs; the other door is provided with a lock, the bolt
of which is constructed according to the Specification of the aforesaid Letters
Patent. I bring the door with the vertical bolts into the position for the passing
of the bolts into the recesses in the casing and by means of a key actuating a
pinion working into racks on the two bolts, they are simultaneously shot into the
recesses in the casing, I then bring the other door into the same line and by
means of a lever or handle shoot the lock bolt in between the two vertical bolts
and thus both doors are secured.
In the event of a crush or those within wishing to get out, simple pressure
against a bar or bars is made to actuate the withdrawal of the bolt of the lock
when the vertical bolts are drawn by means of the springs, within the door and
the doors are free to open.
In the case of a single swing door the bolt of the lock is shot into the jam
of the door or withdrawn in the same manner.
Dated this 20th day of Senember
JOHN WAUGH,
Agent.
COMPLETE SPECIFICATION.
Improvements in Fastenings for Exit Doors.
I, JOSEPH KAYE, of the firm of Joseph Kaye and Sons, Limited, South
Accommodation Road, Leeds, in the County of York, Lock Manufacturer, 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:—
This invention relates to certain improvements whereby exit swing doors and the
like are secure when closed, against inlet from the outside, and automatic in their
action as to being opened from the inside by persons coming in contact with the
door in a crush or otherwise.
In order that my invention may be fully understood, I will describe the same by
making reference to the accompanying sheet of drawings in which
Fig. 1. represents an elevation of such portions of a pair of swing doors as are
required to explain my improvements, which are added thereto, a portion of each
door being in section in order to shew the interior of the lock and a portion of the
vertical bolts.

page_text: Fig. 2. a section of same through line a. b.
Fig. 3. an elevation of a portion of the inside of the doors, having the attach-
ments for operating the lock from the inside added thereto.
Fig. 4. a plan of same, and
Fig. 5. a sectional end view through line c. d.
6
The lock bolt A. is made to protrude beyond the face of the lock and in the case
of double swing doors to engage between the vertical bars C and C¹ mounted in the
other door, and the special object of this invention is to so operate the lock levers
from the inside of the door without the aid of a key that, on pressure on the inside
the lock bolt A. is automatically withdrawn and thereby to instantly release the 1
doors.
When it is desired to secure swing doors, the door B. provided with vertical
bolts C and C' is brought into the position for the ends of said bolts to engage
in the respective recesses D. in the door casing E. and sill E'. The said bolts for
securing the door B. are moved in the direction of arrows by the operation of the
spur pinion F. which gears with the racks G. G. formed on the respective vertical
bolts C and C¹.
On closing the second door B¹ the vertical bolts are securely engaged with the
recesses D. by means of the bolt A being shot between the said bolts as shown by
Fig. 1.
In the event of a crush or those within the building wishing to get out, on
pressure being applied against the bar H. suitably supported, at one end by a
fitting J. the said bar is caused to come in contact with a bell crank lever K.
mounted on bracket L. by which the end of said lever at K¹ is made to engage
with a second lever M. secured on the spindle N. thereby operating the same in the
direction of arrow 2 a sufficient distance as will cause the lever O. secured on the
said spindle in the interior of the lock to operate the lock levers Q. through
the intermediary arm P. by the latter pressing on the said levers at Q. The
levers Q. are supported by a pin at W. and by the intermediary arm P. acting on
the levers Q. as described, the other end of the levers Q. is lifted opposite the
recess R. formed in the lock bolt. A. thus allowing the said lock bolt to be auto-
matically withdrawn by means of the lever O. moving in the direction of arrow 2
and compressing the spiral spring S. between said lever and projection S¹ forming
part of the plate of lock bolt A.
Immediately the lock bolt A. is withdrawn in the manner described, the vertical
bolts C and are free, to be operated in the opposite direction to that indicated
by the arrows by means of the expansion of the compressed spiral spring T. thus
withdrawing the bolts from the recesses D. and thereby automatically releasing
the doors.
In Fig. 6. I show a modification in which a lever handle U. is secured on the
spindle N. any pressure brought to bear on the said handle in the direction of
arrow 3 automatically operates the levers in the lock in the manner as herein-
before described thereby liberating the doors.
When the lock bolt A. has been withdrawn the same may be prevented being
accidentally locked, by the attendant turning the stop V. and bringing the same in
contact with projection Y. on the plate of lock bolt A. near the end at O' of
lever O. whereby it is impossible to operate the lock, until the stop V. is raised
clear of the said arm.
It will be easily understood that by mounting the lock in a single door and
operating the levers of the same by a bar H. or lever handle U. in the manner as
before described, the bolt A. may be withdrawn from the door jamb and the single
door liberated.
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 combination of the bar H. levers K. and M. with the lock bolt, A. and

page_text: the vertical bolts C and C¹arranged and operated substantially in the manner.as
shown and described.
2. The combination of the lever handle U. with the lock bolt A. and the vertical
bolts C. and C¹ arranged and operated substantially in the manner as hereinbefore
> described.
3. The method of automatically releasing locked doors on applying pressure to a
bar or lever in connection with the lock bolt.
"
JOHN WAUGH,
Agent.