Improvements in Combination Locks.
Year: 1897

page_text: Date of Application, 20th Apr., 1897-Accepted, 23rd Oct., 1897
COMPLETE DIECIFICATION.
Improvements in Combination Locks.
I, WILLIAM FREDERICK WIBLE, Labourer of the Town of Gettysburg, in the
County of Adams and State of Pennsylvania, United States of America, 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:-
1
My invention relates to combination locks.
My object is to provide a combination padlock of simple and cheap construction
which will comprise in its make-up improved features adapted to co-operate in a
novel manner whereby an extremely efficient lock is provided and one in which
the combination can be readily changed whenever desirable. Having the fore-
going object in view the invention consists in a combination padlock embodying
certain improved features and novel combinations of parts appearing more fully
hereinafter.
In the accompanying drawings,
Figure 1 is a side elevation with the cover removed.
Figure 2, a similar view showing the combination knob and dial.
Figure 3, a perspective view of one of the tumbler disks.
Figure 4, a central section through the tumbler disks, and
Figure 5, a view of the cover plate showing its securing lug.
The numeral 1 designates the casing of a padlock consisting of a base 2, a
frame strip 3 projecting around the edge of the base strip, and a cover plate 4
designed to slide in a groove 5 in the frame strip and which is secured by means
of a lug 6 projecting from the cover plate and normally locked under a locking
bolt 7 when the latter is in cast position. The locking bolt 7 is movable longitu-
dinally between the side portions of the frame strip 3 across the upper edge of
the lock, and a guide 8 upon which it normally rests. The numeral designates
a pivoted hasp provided with a recessed extremity 10 designed to pass through a
hasp aperture 11 in the frame strip and to be engaged by the bolt 7 when the
latter is cast. A sleeve 12 is connected to or formed integral with the casing.
The numeral 13 represents a tumbler spindle adapted to turn in the sleeve and
provided on one extremity with a graduated combination dial 14 having a suitable
knob. Said spindle has a squared reduced end 13. The numeral 14ª indicates
a plurality of tumbler disks, two of which are loosely mounted to turn on the
sleeve, but the outermost one 14' snugly receives the reduced end 13' and is
secured to the spindle by a screw 14". Each disk is provided with a series of
apertures 15 and with peripheral recesses 16 designed when the several disks are
aligned in the order of the combination, to register with each other and receive
a locking lug 17 projecting from the under side of the locking bolt. The
numeral 18 designates a spring secured to a lug 18¹ on the casing
of the lock and designed to exert its force against the locking lug 17
when the bolt is in its cast or locked position. Each tumbler has a hub 19
provided with a peripheral groove 20 within which is coiled a combination

page_text: spring 21 having its extremity bent at 2511 so as to be adapted to engage with
the spring of the adjacent disk for the purpose of causing a proper alignment of the
disks through the rotation of the knob to bring the various recesses 16 into
alignment to receive the locking lug 17 of the locking bolt. It will be observed
that when the bolt is cast the locking lug 17 will bear against the peripheries
of the disks and be held against retraction by the spring in the disks. As soon,
however, as the tumblers have been properly manipulated the peripheral
recesses 16 are brought into alignment and are presented to the locking lug, the
latter under the impulse of the spring, will extend into the said recesses and the
bolt will be retracted by the spring thereby releasing the hasp. The combination
can be changed by springing the coiled portion of the spring out of the groove
in the hub and removing the bent end 25" from the aperture and placing the
said end in another aperture, the coiled portion being replaced around the hub
again. The spring on one of the disks or on all the disks can be changed and
the desired combination had.
It will readily be understood from the foregoing that the combination having
been determined upon, the extremities of the combination springs carried by the'
several discs are inserted in the proper apertures. By grasping the combination
knoli aud turning the latter, it will be seen 'that the extremity of the spring,
carried by the disc, fixed upon the spindle, will engage with the spring upon the
next dise and continued rotation of the spindle will cause the synchronous rotation
of the two disks thus connected. The combination spring upon the second disc will
finally be brought into engagement with the spring upon the third disc and
all three will then be in a fixed relation 50 far as rotation in one
direction is concerned. When it is desired to open the lock it is
necessary that the disc be first placed in this relation, the knob is then turned
until the numeral 1, upon the dial, aligns with the mark upon the locked case.
The knob is now turned in the direction opposite the direction of its rotation
referred to and the fixed disc will be the only one moved, as the extremity of the
locking spring will be moved out of relation with the spring upon the second
disc. As soon as the fixed disc has made a complete revolution, however, its
spring will engage the spring of the second disc from the opposite side, and the
second disc will be moved independently of the third disc to bring the notches
of the second and latter dises in alignment. The knob is now rotated in the original
direction again, which will cause the movement of the fixed disc only, and, as
the latter is moved in accordance with the determined combination, the three
notches will properly align and will permit the operation of the device in a
manner which has heretofore been specified.
It is to be understood that I do not limit myself to the precise construction
berein shown and described but reserve the right to change, modify or vary the
invention in all particulars that come within the spirit and scope thereof.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is:-
:-
1. In a padlock, the combination with a locking bolt, of tumbler disks adapted
to engage with said bolt when properly aligned, a spindle connected to one of said
disks, and means carried by said disk adapted to engage with the other disk.
2. In a padlock, the combination with a locking bolt having a locking lug
and a spring adapted to retract said bolt, of tumbler disks provided with notches
in their peripheries adapted to receive said locking lug, a spindle connected to
one of said tumbler disks, and means carried by said disk adapted to engage with
the other disk.
3. In a padlock, the combination with a locking bolt, of tumbler disks adapted
to engage with said bolt when properly aligned, means for turning one of said
disks, and a member carried by one of said disks which is adapted to engage with
the other disk and is capable of being moved or changed in relation to the disk

page_text: to which it is connected whereby the combination between the disks can be
changed.
4. In a padlock, the combination with a locking bolt, of tumbler disks adapted
to engage therewith when properly aligned, each disk having a plurality of
openings made in the face thereof, a separate catch device for each disk which
device is adapted for reception in any opening of the disk and to engage with the
adjacent disk, and means for turning one of said disks.
5. The herein described tumbler disk, the same being provided with peripherally
disposed openings or apertures and having a hub and a spring coil around the
hub and provided with a bent end which is received in an aperture.
6. In a padlock, the combination with a base plate, and a frame strip connected
thereto and provided with a flange, of a locking bolt, means for actuating the
same, and a cover plate received under the flange and having a lug bearing
against the locking bolt.
1
2011
.. A 1907
JENSEN & SON,
77 Chancery Lane, London, W.C., Patent Agents.