Year: 1895

page_text: Date of Application, 9th July, 1895
Complete Specification Left, 8th Apr., 1896-Accepted, 9th May, 1896
We, GEORGE WASHINGTON HILL, Clerk, ISAAC BACHTEL HILL, Clerk,
ALBERT SEIGEL ZIMMERMAN, Book-keeper, and WILLIAM ELMER HUBBARD,
Real Estate Agent, all of Salt Lake City, Utah Territory, U.S.A., do hereby
declare the nature of this invention to be as follows :—
In combination locks instead of the employment of tumblers as a means for
preventing the withdrawal of the bolt until the dial has been turned through the
number of turns necessary to form the combination, a cylinder is employed which
is turned by the operating dial, said cylinder having formed on its periphery
a number of grooves running from side to side and so related to each other that
when the cylinder is turned to arrive at the proper combination a point travelling
in such grooves will traverse the length of the cylinder and will reach any pre-
determined part of the same when the bolt or cut off mechanism will assume such
a position as will permit the withdrawal of the bolt. A lock thus formed has but
one combination.
To enable the combination of a lock to be changed, instead of a single cylinder,
a number of independent cylindrical rotary sections mounted on the same axis
are employed. These are grooved like the cylinder and their respective positions
indicated on a dial. The change of combination is effected by altering the relative
positions of the sections and then locking them together when they may be operated
by the dial as one piece.
Dated this Oth day of T..1, 1905
THOMAS R. SHILLITO,
89 Chancery Lane, London, W.C., Agent for the Applicants.
We, GEORGE WASHINGTON HILL, Clerk, ISAAC BACHTEL HILL, Clerk,
ALBERT SEIGEL ZIMMERMAN, Book-keeper, and WILLIAM ELMER HUBBARD,
Real Estate Agent, all of Salt Lake City, Utah Territory, U.S.A., 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 :-
The main object of this invention is the provision of a combination lock in
which the dial can be turned through the number of turns necessary to unlock
the lock without causing the slightest noise and therefore without enabling an
expert, by merely turning the dial, to ascertain the proper combination to unlock
the lock as may be done when tumblers are used. Other objects are, to simplify
and render more compact the mechanism of the lock, and to enable the com-
bination to be changed more quickly and easily than is possible with the locks
hitherto made.
In the drawing
Fig. 1 is a perspective view of the lock of this invention as seen from the side.

page_text: .
Fig. 2 a top perspective view of the same as seen in a direction opposite to
that of Fig. 1. Fig. 3 an enlarged section through line x-x of Fig. 2.
Fig. 4 a view of the rear or setting dial.
Fig. 5 a detail view of the ratchet and pawl.used to lock the operative dial when
the lock is unlocked.
Fig. 6 a section on line y-y of Fig. 1 shewing the bolt and bolt cut off block.
Fig. 7 a detail of the bolt cut off block.
Fig. 8 a detail view of the lever the pin of which is normally held down by a
spring and of the guide foot.
1 is the lock casing, 2 the safe or other wall to which the casing is secured.
3, 4, sides of the casing between which is journalled the spindle A on one end of
which is keyed the dial B. Upon the spindle A between the sides of the casing is
mounted a cylinder A having a grooved periphery. This cylinder is used instead
of the usual tumblers. In the construction shewn in the drawing the cylinder
is divided into a number of sections to enable a change of combination to be
effected.
The cylindrical sections are C, D, E, F, and are independently revoluble. Upon
their peripheries are formed a number of grooves running from left to right and
right to left and meeting each other at different angles. At some points as shewn
in Figs. 1 and 2 two or three of the grooves meet, and some of the grooves may
be but branches of a main groove which return to said groove.
The grooves are so related to each other that when the various cylindrical
sections are turned in the proper direction, a continuous groove is formed from
one end of the cylinder to the other so that a point moving in said grooves can
move from section F to section C and moving in said section will finally be guided
to the top groove formed therein. Integrally with each of these sections is formed
a collar, C, D, E, F, all extending in the same direction and projecting beyond
the side of the casing. The lengths of the collars differ so that free movement is
allowed for the indicating hands C, D, E, F, one of which is attached to each
collar. These hands indicate the positions of the various sections on the rear or
setting dial G and the combination once formed may be read at a glance.
Change of combination may be effected very readily by merely changing the
position of the hands, and thereby the sections to which they are attached. To
hold the sections fixed after the change has been effected the fastener H is provided,
which clamps down over the projecting collars, C, D, E, F, and is held in
position by the screw 1. A cover K is provided for the rear or setting dial to
prevent accidental movement of the various sections.
In the grooves of the cylindrical sections moves the guide foot 7 which is in
such connection with the bolt cut off mechanism that when it is moved, through
the turning of the dial, to pass up into the highest groove in section C the bolt
cut off mechanism is caused to assume a position permitting the withdrawal of the
bolt.
The connection between the guide foot 7 and the bolt cut off mechanism is as
follows: Between the sides of the case 1 is secured the arbor
upon which is
mounted the collar 6. To this collar is keyed the lever 8 through one end of which
passes the pin 71 normally held down by the spring 72 and having keyed thereto or
formed integrally therewith the guide foot 7 having a bottom shoulder 73 and to
the other end of said lever is attached the bolt cut off block 9. The spring 101
attached to the collar 6 and to the side of the casing acts to hold the pin in
engagement with the grooves of the cylinder. The bolt cut off block 9 moves
between the two blocks 10, 11, and is normally held so that the aperture formed
therein does not register with the apertures formed in blocks 10, 11, thus preventing
the withdrawal of the bolt 12. On this latter is formed a collar 13 which limits its
to and fro movement and in said bolt is formed a slot 14 in which plays an arm 15
formed on the spindle 16 to one end of which is attached a handle 17. The arm 15
may fit tightly in the slot 14 or may be allowed to play therein. 18 (Fig. 6) is a
-stop to limit such play. The construction is such that when the bolt cut off block 9

page_text: falls so that its aperture registers with apertures 10, 11, the turning of the handle 17
will cause the bolt to be withdrawn.
It is desirable to prevent any strain on the guide foot 7 when the bolt is with-
drawn and to this end the cylindrical sections C, D, E, F, may be locked by the
following means:- -On spindle A is mounted the ratchet wheel L. One side of
the aperture in the ratchet wheel through which the bolt passes, is flat (Fig. 5) so
that the wheel cannot move on the spindle. 20 is a pawl normally held away from
the ratchet wheel by a spring 19. Lengthwise of the casing 1 and guided by
suitable guides 21 is a lever 22 one end of which is slotted and bent upwards for
the engagement therewith of an arm 24 (Figs. 1, 2) formed on the spindle 16.
The other end of the same when the lever is pushed backward forces the pawl 20
into engagement with the ratchet wheel L so as to lock it and its spindle. When
the lock is locked, the lever 22 is in its forward position and the pawl 20 is free
from the ratchet wheel. When however the bolt 12 is withdrawn the lever 22
is forced backward by the arm or pin 24 and the pawl 20 locks the ratchet
wheel L.
The operation of the lock is as follows:-Change in combination is effected by
removing the cover K, loosening the fastener H and setting the cylindrical
sections C, D, E, F, by moving the indicating hand of each. The fastener H is
then placed in position, the cover K put on, the dial turned to the right in order
to get the guide foot 7 at the starting point and the lock is ready for operation. If
the dial B is now turned through the proper combination the guide foot 7 will be
guided through the grooves in the cylindrical sections, the shoulder 73 keeping it
in the proper groove, when two or more grooves intersect, until it reaches the top
groove in the section C. When in this position the bolt cut off block 9 is forced
downward so that the bolt 12 can be withdrawn. The withdrawal of the bolt, locks
the cylindrical sections and keeps them from moving by reason of the pawl 20
engaging the ratchet wheel L. When the bolt 12 is moved forward again by
turning handle 17, a turn of the dial will destroy the combination.
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 bolt, a bolt cut off mechanisin, and an
operative dial, of a cylinder moved by the movement of the dial and having formed
in its periphery a number of grooves running in the same or different directions but
so related to each other that it is possible for a guide foot moving in said grooves
to be guided to any predetermined portion of the cylinder, a guide foot moving in
said grooves and means for causing the bolt cut off mechanism to assume such a
position as to allow the bolt to be withdrawn when the guide foot has reached a
predetermined portion of the cylinder, substantially as described and shewn.
2. In a lock, the combination with a bolt, a bolt cut off mechanism, and
an operative dial, of independently revoluble cylindrical sections mounted on the
same axis and arranged to be keyed together to be moved as one piece by the
movement of the dial, grooves formed in the peripheries of such sections running
in the same or opposite directions but so related to each other that it is possible
for a guide foot moving in said grooves to be guided to any predetermined portion
of said cylinder, a guide foot moving in said grooves, and means for causing the
bolt cut off mechanism to assume such a position as to allow the bolt to be with-
drawn when the guide foot has reached a predetermined portion of the cylinder,
substantially as described and shewn.
3. In a lock, the combination with a bolt, a bolt cut off mechanism and an
operative dial, of independently revoluble sections mounted on a common axis and
arranged to be keyed together so as to be moved by a movement of the dial, a
setting dial, collars integrally formed with said cylindrical sections and bearing
indicating hands for indicating the respective positions of the sections on the setting
dial, grooves formed in the peripheries of the sections running in the same or
.

page_text: opposite directions, but so related to each other that it is possible for a guide foot
moving in said grooves to be guided to any predetermined part of such cylinder, a
guide foot moving in said grooves, and means for causing the bolt cut off mechanism
to assume such a position as will allow the bolt to be withdrawn when the guide
foot has reached a predetermined portion of the cylinder, substantially as described
and shewn.
4. The general construction, arrangement and combination of parts constituting
the combination lock, substantially as described and shewn.
Dated this 8th day of April 1896.
THOMAS R. SHILLITO,
89 Chancery Lane, London, W.C., Agent for the Applicants.