Improvements in Permutation Locks.
Year: 1894

page_text: Date of Application, 29th May, 1894
Complete Specification Left, 27th Feb., 1895-Accepted, 30th Mar., 1895
PROVISIONAL SPECIFICATION.
[Communicated from abroad by DANIEL J. CABLE, of No. 411, Wood Street,
Pittsburg, in the County of Allegheny, and State of Pennsylvania, United
States of America, Electrician and Mechanician.]
Improvements in Permutation Locks.
I, WILLIAM ROBERT LAKE, of the Firm of Haseltine, Lake & Co., Patent
Agents, 45 Southampton Buildings, in the County of Middlesex, do hereby declare
the nature of this invention to be as follows:-
My invention consists of a combination lock to be applied to books, satchels,
pocket-books, or other similar articles, and it comprises essentially a locking case
or shield having openings in the side for the insertion of a hasp plate; a plate
provided with downwardly projecting lugs for engaging the hasp plate, capable
of longitudinal movement within the case, controlled by one or more dial stems
passing through the openings in the movable plate, and provided with narrower
portions, designed to register with slotted extensions of said openings and having
at their upper portions, numbered or lettered dials, designed to be set to a
combination.
It further consists in a modified construction whereby the case is removably
attached to one side of the article to be locked by means of downwardly projecting
hooks on the case, in engagement with a retaining bar or plate, permanently
attached to the article.
The lock case is riveted, or otherwise secured to one cover, of a book, to the
other cover of which is similarly secured the hasp plate provided with inwardly
turned flanges and slots.
Within the lock case is located the locking bar which is held upward against the..
under side of the case by the rivet heads at the lower ends of the dial stems which
stems pass up through proper openings in the case and are riveted or otherwise
secured to the dial buttons, on the upper face of the case. The locking bar is pro-
vided through its central body portion with openings, made round at one end to
allow the full diameter of the dial stem to pass therethrough, and at the other end
the opening is somewhat longer and narrower to allow the thinner flattened portion
of the stem to enter it, only when it is exactly in register. It will be seen that
when thus in register the locking bar may be withdrawn, but when not so in
register, its withdrawal will be prevented. I may use three such openings and
stems and it is obvious that any number desired may be employed, thereby increasing
the number of combinations as each dial is located in a different relative position on
the stem, and therefore must be set to its own proper position, and when all the
dials are so set, the flat parts of the stems will be in register with the narrow
openings in the bar. These openings may lead off from the wider opening some-
what to one side, as in a central position the flattened part of the stem would have
to be in its centre, and would therefore allow the opening to come into register with
it in two positions of the dial which I desire to avoid. I do not, however, wish to
limit myself to this way of cutting the slots, as I may find it advantageous to locate
them in line with the centre of the bar in some constructions of locks, varying
according to circumstances.
In the side of the case adjacent to the hasp plate are the slotted openings
immediately below the lower edge of the locking bar and the flanges are designed

page_text: •
to enter these openings, and the slots to be engaged by the downwardly projecting
lips on the locking bar. When in such position the dials may be turned out of
combination, throwing the flattened part of the dial stem across the slot and until
again put in register, the locking bar will be immovable, securely holding the hasp
plate and preventing its withdrawal.
For the purpose of allowing the lock to be made detachable I may employ the
securing plate which is provided with an opening into which may be inserted the
hooks, formed integral with the case, furnishing a secure attachment when the hasp
plate is locked, but permitting of the easy removal of the entire lock when not
in use.
Any number of numerals may be employed and the registering point may be
located where most convenient to suit the different uses to which the lock may
be put.
When the lock is set to any desired combination it is obvious that in any other
combination it will not open. Divisions, such as halves and quarters between the
numbers may be readily employed when the diameter of the dial will allow of it.
I am aware that it is not new to make.locks in which a series of disks are brought
into register with a locking bar but such construction does not form a part of my
invention.
The advantages of my invention will be appreciated by those skilled in the art.
It is simple, effective, cheap, and not liable to get out of order; and is applicable
to many cases where locks of other construction could not be used.
Dated this 29th day of May 1894
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.
improvements in Fermutation LOCKS.
I, WILLIAM ROBERT LAKE, of the Firm of Haseltine, Lake & Co., Patent
Agents, 45 Southampton Buildings, in the County of Middlesex, 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 permutation locks to be applied to books, satchels,
pocket-books, or other similar articles. The said improved lock comprises
essentially a locking case or shield having openings in the side for the insertion of
a hasp plate; a plate or bar provided with lugs for engaging with the hasp plate,
and capable of longitudinal movement within. the case; one or more dial stems
passing through openings in the movable plate for controlling the said plate; said
stems having narrow portions designed to register with slotted extensions of the
aforesaid openings in the plate and having at their upper portions numbered or
lettered dials, designed to be set to a combination.
In a modified construction, the case is removably attached to one side of an
article to be locked by means of hooks on the case that engage with a retaining bar
or plate permanently attached to the article.
Figure 1, is a perspective view of a book provided with my improved lock.
Figure 2, is a similar view of a portion of the book, showing the locking bar
withdrawn and the book thrown partially open.
Figure 3 is a plan of the lock, showing the operative parts in dotted lines, as in
a locked position.
Figure 4, is a vertical longitudinal section on the line a, a of Figure 3.
Figure 5 is a horizontal section on the line y, y of Figure 4.
Figure 6, is a plan of the lock showing the operative parts in dotted lines, as in a
position to allow the locking bar to be withdrawn.

page_text: Figure o, is a plan of the asp plate.
Figure 9 is a perspective view of the locking bar.
Figure 10 is a perspective view of the hasp plate.
Figure 11 is a perspective view from beneath, showing the lock case, the locking
bar, and the hasp plate in an operative position.
Figure 12, is a perspective view of the dial.
Figure 13 is a perspective view of the dial stem.
Figure 14 is a perspective view of a securing plate to be used when it is desired
the entire lock shall be detachable.
Figure 15 is a vertical cross section on the line, of Figure 3.
Similar numerals of reference refer to like parts wherever used throughout this
Specification.
.
2 is the lock case riveted or otherwise secured to one cover 3 of a book, to the
other cover 4 of which is similarly secured the hasp plate 5, provided with inwardly
turned flanges 6 and slots 7.
Within the lock case 2 is located the locking bar 8 which is held upward against
the under side of the case by the rivet heads 9 at the lower ends of the dial stems 10,
which stems pass through proper openings in the case 2 and are riveted or otherwise
secured to the dial buttons 11, on the upper face of the case. The locking bar 8
is provided through its central body portion with openings, made round at one
end 12 to allow the full diameter of the dial stem 10 to pass therethrough; at the
other end the opening is somewhat longer and narrower as at 13 to allow the
thinner flattened portion 14 of the stem to enter it, when it is exactly in register as
shown in Figure 7. It will be seen that when thus in register the locking bar may
be withdrawn, but when not so in register, its withdrawal will be prevented, as
illustrated in Figure 5. The drawings illustrate three such openings and stems,
but it is obvious that a greater number may be employed, thereby increasing the
number of possible combinations, as each dial is located in a different relative
position on the stem, and must be set to its own proper position, before the locking
bar can be withdrawn. When all the dials are so set, the flat parts 14 of the stems
will be in register with the openings 13 in the bar. The said openings are shown
as leading off from the openings 12 somewhat to one side thereof, as in a central
position the flattened part of the stem would have to be in its centre, and would
therefore allow the opening to come into register with it in two positions of the dial
which I desire to avoid. I do not, however, wish to limit myself to this particular.
construction of the slots, as I may find it advantageous to locate them in line with
the centre of the bar in some constructions of locks.
In the side of the case adjacent to the hasp plate are the slotted openings 15
immediately below the lower edge of the locking bar. The flanges 6 are designed
to enter these openings, and the slots 7 to be engaged by the downwardly pro-
jecting lips 16 on the locking bar as indicated in dotted lines in Figure 5 and
shown in perspective in Figure 11. When in such position, the dials may be
turned out of combination, thereby throwing the flattened part of the dial stems
across the slots; until again put in register the locking bar will be immovable.
and will securely hold the hasp plate and prevent its withdrawal.
For the purpose of allowing the lock to be made detachable I may employ
the securing plate shown in Figures 14 and 15 provided with the openings 17
into which may be inserted the hooks 18 Figures 11 and 15 that are formed.
integral with the case. By these means a secure attachment is furnished, when
the hasp plate is locked, but one permitting of the easy removal of the entire
lock when not in use. The locking bar 8 is furnished with an upturned finger
piece to facilitate the moving of the said bar.
Any number of numerals may be employed on the dial buttons and the
registering points 19 may be located where most convenient to suit the different.
uses to which the lock may be put.

page_text: In the drawings I have shown the lock set to the combination 4-1-1, and it is
obvious that with any other combination it will not open. Divisions such as
halves and quarters between the numbers may be readily employed when the
diameter of the dial will allow of it.
I am aware that it is not new to make locks in which a series of discs are brought
into register with a locking bar but such construction does not form a part of this
invention.
The advantages of this invention will be appreciated by those skilled in the art.
It is simple, effective, cheap, and not liable to get out of order, and is applicable to
many cases where locks of other construction could not be used.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, as communicated to me by
my foreign correspondent, I declare that what I claim is :-
1. A lock, comprising a case or shield, having openings in the side for the
insertion of a hasp plate; a plate or bar provided with lugs for engaging the hasp
plate, and capable of longitudinal movement within the case; one or more dial
stems passing through openings in the movable plate or bar, and provided with
narrow portions designed to register with slotted extensions of said openings in the
plate, and numbered or lettered dials, designed to be set to a combination, at the
upper ends of said dial stems, substantially as shown and described.
2. In the aforesaid lock, forming the openings 13 to one side or the other of
the centre line of the openings 12, substantially as, and for the purposes, described.
3. In combination with a book, satchel or other similar article, a case rigidly
secured to one side thereof, a locking bar therein arranged and operating as herein
described and a hasp plate secured to the other side of the article and provided
with lugs designed to enter openings in the side of the case and to be engaged by
lugs on the locking bar, substantially as shown and described.
4. In combination with a book, satchel or other similar article, a case provided
with downwardly projecting hooks removably attached to a retaining bar or plate
secured to one side of the article, and a hasp plate secured to the other side of the
article, and locking mechanism within the case substantially as shown and
described.
5. A combination lock for a book, satchel, or other article, constructed sub-
stantially as described with reference to Figures 1 to 13 and attached permanently
to the article to be locked or-removably attached thereto as shown in Figures 14
and 15.
D
T
3
T 3
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.