Improvements in Door Locks.
Year: 1896

page_text: Date of Application, 11th Aug., 1896-Accepted, 12th Sept., 1836
Improvements in Door Locks.
We, EUGENE SILAS SUTTON, and JAMES HAGAN, both of Snohomish, in the
County of Snohomish, and State of Washington, United States of America,
Gentlemen, 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 door-locks. The object of the invention is to provide
a simple and easily operated lock which shall be of such construction that the
employment of springs will not be necessary.
With this object in view, the invention consists of certain features of construction
and combination of parts, which will be hereinafter fully described and claimed.
In the accompanying drawing:-
Fig. 1 is a view in elevation of the improved lock, the front cover of the casing
being removed to show the position the parts assume when they are locked.
Fig. 2 is a similar view showing the position the parts assume when unlocked.
Fig. 3 is a similar view showing the position assumed by the parts when they are
set against being unlocked by a key.
Fig. 4 is a detail perspective of the pivoted bolt, the actuating lever, the yoke
frame, and its sliding block and
Fig. 5 is a perspective view of the keeper used in connection with the lock.
In the drawing, 1 denotes the lock casing which may be of any well known or
approved construction having the usual slot 2 at its outer end for the end of the
bolt. 3 denotes the bolt which is pivoted to the casing at 4, and projects through
the slot 2 in the edge of the casing. The upper edge of this bolt is provided with
two notches 5 about midway of its ends and the head of the bolt is provided with
a lug 6 which is adapted to close the slot in the edge of the casing when the door
is swung open, and thereby protect the mechanism from dust, etc. Near the inner.
end of the bolt is an upwardly-projecting arm 7. 8 denotes the yoke or frame.
provided with shoulders 9 by means of which it is supported upon the upper edge
of the bolt. The upper cross piece of this yoke is provided with a notch 10. A
sliding block 11 is arranged between the vertical members of the yoke frame and
has a vertical sliding movement between the same, and is provided with a tooth 12.
adapted to engage the notches in the pivoted bolt. 13 denotes the actuating
lever which is provided with bosses 14 to fit into the sides of the casing, and
which are provided with a central squared aperture 15 to receive the shank 16 of
knobs, by means of which the lever is actuated. The upper end of this lever is
provided with a lug 17 which engages the upper edge of the extreme inuer end of
the pivoted bolt at one side of its pivot, while the free end of the lever engages
the lower edge of the bolt at the other side of its pivot, whereby the bolt may be
actuated when the door knobs are turned in either direction.
18 denotes a latch by means of which the bolt is locked from within, so as not
to enable a person having a key to unlock it. This latch consists of a disk which
is pivoted between the sides of the casing and which has a lug 19 that engages the
arm 7 of the pivoted bolt, and thereby prevents the bolt being raised by the
actuating lever. A similar lug 20 projects through the top edge of the casing by
means of which the disk may be set.
In operation, when the parts are in the position shown in Fig. 1 with the upper
end of the yoke frame under the lug 21, the pivoted bolt cannot be thrown out of

page_text: engagement with its keeper by turning the door knobs, as the parts are prevente I
from rising by the said lug. To unlock the door, a key is inserted through the
key hole in the casing, and when turned, the bit thereof will strike the sliding
block and raise its tooth from engagement with the outer notch of the pivoted bolt,
and then will slide the frame laterally inward by engaging the inner side member
thereof, until the tooth in the sliding block is opposite the inner notch of the bolt,
when the sliding block will fall by its own weight, bringing its tooth in engagement
with the said inner notch. Now, by turning the door knob in either direction, the
bolt may be swung upward to throw it out of engagement with its keeper.
To lock the door, the key is turned in the opposite direction, when the frame
and its block will be moved under the lug 21 in which position the bolt will be
prevented from being swung up by turning the knobs. The notch in the upper
cross piece of the yoke or frame allows of the block being moved upward in said
frame, without causing the frame itself to have a vertical movement so that the
frame may be slid underneath the lug 21 and slid from under the same. When the
bolt is locked and it is desired to close the house for the night and prevent any ill-
disposed persons from entering it by means of a key, which would operate the bolt,
we turn the disk 18 so as to bring the lug thereon in engagement with the upwardly-
extending arm of the bolt. With the parts in this position it would be impossible
for anyone to unlock the door with a key.
In the drawing we have not deemed it necessary to show the front cover or
plate of the casing as it is of the well known or approved form and attached in the
usual way.
The lock is very simple, is composed of but few parts which are so constructed
that it will stand a great deal of wear and jar without getting out of order, and
by dispensing with the springs the life of the lock is greatly increased.
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. In a lock, the combination with a casing having a lug on its inner side, a
bolt pivoted therein and provided with notches in one of its edges, a yoke mounted
to slide longitudinally on said bolt, a block mounted to slide in said yoke, and
provided with a tooth to engage said notches, substantially as set forth.
2. In a lock, the combination with a casing, a pivoted bolt provided with an arm,
a disk pivoted in said casing, and provided with a stud adapted to be moved against
said arm to lock the bolt against vertical novement, substantially as set forth.
3. In a lock, the combination with a casing having a slot in one of its edges for
the play of the bolt, a bolt pivoted in said casing and projecting through said slot,
said bolt having a fixed lug whereby the slot is closed to prevent the entrance of
dust, etc., substantially as set forth.
4. A lock comprising a casing baving a lug on its inner side, a bolt pivoted in
said casing and having notches formed in its upper edge, an upwardly-projecting
arm secured to said bolt, an actuating lever pivoted in said casing, and adapted to
be operated by the door knob shank, said lever having a lower curved end adapted
to engage the bolt at one side of its pivot to raise the same, and provided at its
upper end with a lug adapted to engage the bolt at the other side of its pivot
whereby the bolt may be actuated when the shank is turned in either direction, a
disk pivoted in said casing and provided with a lug to engage the upwardly-
projecting arm, a yoke frame having a longitudinal sliding engagement with the
bolt, and a vertical sliding block mounted in said yoke frame and provided with a
tooth to engage the notches in the bolt, substantially as set forth.
Dated this 10th day of August 1896.
WHEATLEY & MACKENZIE,
40 Chancery Lane, London, W.C., Agents..