Year: 1896

page_text: This Print is in accordance with the Original Specification as it stands after
Amendment (under Section 18 of the Patents, &c. Act, 1883) as allowed
by the decision of the Comptroller General of the 16th day of June 1898.
Date of Application, 24th July, 1896-Accepted, 12th Sept., 1896
I, ALEXIS KOHL, of 48 Vimmelskaftet, Copenhagen, in the Kingdom of
Denmark, Civil Engineer, do hereby declare the nature of this invention and in
what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement:-
The present invention concerns a precautionary arrangement for cycles and the
like, in which an adjustable bolt, that is connected with or forms part of a lock
mechanism, can be made to catch into one of the inner, movable parts of the
cycle, such as the steering tube, the crank-axle or similar parts, and thus prevent
the moving of this part in any way and consequently also that of the cycle.
The main point of the invention consists of a bolt, placed inside or outside the
frame, and which by means of an adjustable lock mechanism can be so adjusted
that it can catch into or be released from a perforation, bore, groove or the like
arranged on the steering tube or on one of the rotating axles.
The invention is shown as an example, in two constructional forms in the
accompanying drawing, in which also a convenient lock mechanism in connec-
tion with a peculiar device for obtaining an easy and reliable fixing of the
complete arrangement is represented.
Figure 1 shows a vertical section through such safety lock placed at the
crank-axle, and having its locking bolt arranged inside the cycle frame.
Figure 2 shows a similar arrangement having the bolt placed at the steering
tube outside the frame and seen from the outside.
Figure 3 shows the same open and with its key removed therefrom.
Figure 4 shows the same in vertical section.
Figure 5 shows a section on the line - of Figure 3, on a slightly larger
scale.
In Figure 1 the adjustable bolt is placed centrally in the saddle bearing
tube A. In the crank axle a recess is made into which fits the end of the bolt a.
To the upper end of the bolt an arm c is fastened which passes through a slot d,
projects outside the saddle bearing tube, where it is protected by a cover e, and is
acted upon by an adjustable locking mechanism. In this constructional form
the arm is not firmly connected to this mechanism but is firmly pressed against
it by the spring f. This arrangement, however. is not essential with regard to
the invention: the arm may also be firmly connected to the locking mechanism
and not to the holt, against which it would then only bear, or it may be firmly
connected with the bolt as well as with the locking mechanism, in which latter
CD 8/7

page_text: is here shown mounted
in a boxy and guided by the end-pieces gl and g of the said box; after this box
has been suitably fixed to the interior of the saddle bearing tube A, the arm is
passed through the slot d and screwed into the head of the bolt. It is thus
evident that, when the bolt is moved into the recess b. any further motion of the
axle is rendered impossible.
case the spring f may be omitted, and so forth. The bolt
According to Figure 2 the bolt is placed within and guided by a cover e,
fixed in such a manner that it can neither be removed nor be destroved without
great effort. The bolt which either, as shown, is forced back by a spring normally
against the locking mechanism or may be firmly connected with the latter, is in
this instance pushed into a perforation of the steering tube C Figure 4: the
handle-bar cannot then be moved, and the eyele is prevented from being propelled
especially if the handle-bar is locked in such a position that the front wheel
forms an angle with the central part of the eyele
Figures 15 of the drawings represent an arrangement by which the locking
mechanism and the parts intended to protect the bolt a may be easily so attached
to any cycle that its removal would be attended with great difficulty. This
arrangement consists of a bipartite socket h, capable of being opened upon a
hinge, which socket when closed. fits tightly around the respective part of the
evele frame. The interior of this socket is provided with small pins or spikes j
(Figures and 5). or the like, which fit into corresponding perforations arranged
in the cycle frame. The closing of the socket may, as shown, he effected by
the lock mechanism which acts upon the bolt. The cover may either be made
in one piece with the socket or he held immovably by the latter: in both cases it
may be either partly turned or folded or he made to catch into the frame by stops
or the like.
As a lock mechanism specially adapted for this purpose a so-called permu-
tation or letter-lock, is shown in the drawings, which is easily to be handled, is
very reliable and contrary to other locks,-requires no loose key and has no
Joose parts.
The lock consists-as is generally the case with permutation or letter-locks-of
a split tube 7, around which is placed a number of loose rings m (7 in this
instance) provided with ciphers (0-9) around their outer periphery while their
inside is provided with projecting edges, wherein, opposite any predetermined
cipher, is a notch or slot cut for passage of the key n which traverses the lock in
longitudinal direction. The key has a number of bits projecting through the slit
of the tube 7, and between which the inwardly turned edges of the rings m fit.
When all the notches or slots of the rings lie exactly opposite the slit the key
can freely traverse the lock, which is impossible, should even one of the rings be
caused to occupy another position.
These parts, well known in all permutation and letter-locks, are in this device
provided with particular arrangement not heretofore employed, rendering them
specially suitable not only for this but also for other purposes. The object of
these arrangements is, that on the one hand by increasing the length of the
key and by pushing it right through the lock, the operator may be directly or
indirectly enabled to act upon the holt and to retain the same in fixed positions,
and on the other hand to admit of easily and without further auxiliary means
interchanging or replacing the rings in order to thus obtain new combinations of
ciphers.
In order that the key may he fixed in different positions with the employment
of all the rings, the key may receive one or more additional bits in excess of the
number of rings. The drawing represents a key with 9 bits while the number of
rings is only 7.
When the rings are adjusted in the predetermined order so that all notches or
slots lie in the same plane, the key can be pushed forward, out of the position
shown in Figures 1 to 4 to such an extent that the bits outside the lock lie inside
the outermost ring while the opposite end of the key passes through the end

page_text: plates 3 and 4 and subsequently acts upon the bolt a. If the rings are now
turned, the key will be held back by their edges and can only be withdrawn after
all rings having been readjusted in the given order. By a pin o screwed into
the head of the key, which pin projects into a slot p provided in the cycle
frame, the movement of the key is limited to the length of the two bits and the
key is thus prevented from being entirely withdrawn.
The tube 7, upon which the rings are loosely mounted. is so inserted between
two end plates and . that after the key has been removed, the said tubo
may he easily withdrawn, so that the rings can be removed and re-inserted in a
different order or he partly or entirely replaced by fresh ones.
In the example shown, the innermost end of the tuhe is provided with a screw-
thread and screwed into the plates : it can thus he easily screwed in or out
for instance by means of a specially constructed key which catches into the slit
without. however. projecting outside.
The key acts, as above described. directly or indirectly upon the bolt a.
The safety obtained by this lock is very great; in the example, given. 10 millions
of different combinations may be obtained with the ciphers of the rings, and it
would consequently he quite hopeless for unauthorized persons to try and find
the correct combination. Should it for instance. after anybody has become
acquainted with the proper combination of cipher be desirable to select another
number, the rings may. by the above described arrangement. be interchanged
or replaced by others in which the notches are made to correspond to other
ciphers.
In the arrangements shown the lock and the socket act together, inasmuch as
the end plates 13 and h of the lock are placed on the one half of the socket while
the other half has similar perforated plates or wings and which, when the
socket is closed. lie in one and the same plane with the former. The key n thus
passes through all four plates and, when in the lock, keeps the socket inimovably
around the particular pices of the frame.
It will be easily seen that the described safety bolt may be put on in many
different ways other than those shown, for instance inside the handle bar tube or
upon one of the tubes or rods arranged on the crank axle or on any other of the
axles, and further, that in the same axle or tube several holes or recesses for the
holt may be made, so that for instance the handle-har may he locked so as to
either occupy a position toward the right or toward the left.
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). An improved safety lock for velocipedes characterized by the arrange-
ment of a bolt a placul within or outside the frame of the eyele and which is
made to engage with or he released from a perforation or recess in one of the
interior movable parts of the eyele (the steering tube, the crank axle, or the like)
and which is connected to a permutation or letter-lock, detachably secured to
the frame in such a way that the key which acts upon (or itself forms) the
holt a. is carried through plates A, 1, 1, 1, of a fastening piece or socket formed.
to correspond with a certain part of the eyele frame, the lack mechanism being
placed hetween these plates so that the fastening piece or socket and the lock
cannot he removed from their place before the key is withdrawn.
(2). In the lock mechanism mentioned in Claim 1. the arrangement of a pin o
fixed to the key and of a slit p in the cycle frame, in which slit the pin engages
for the purpose of limiting the movement of the key and of thus preventing its
withdrawal."
3. In the locking arrangement of the kind described in the first claim, a device
for fixing the lock mechanism consisting of a hipartite socket surrounding
the respective part of the velocipede frame: which socket is provided internally
with pins or spikes () engaging with corresponding perforations or holes of

page_text: the frame, the said socket being locked around the frame by the same locking
mechanism which acts upon the key substantially as described.
Dated this 24th day of July 1896.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.