An Improved Detachable Bolt Mechanism.
Year: 1896

page_text: Date of Application, 1st Dec., 1896-Accepted, 27th Feb.. 1897
COMPLETE SPECIFICATION.
An Improved Detachable Bolt Mechanism.
I, MAXIMILIAN ARTHUR KRAUSE, of Stadtbahnhof Börse, Bogen 7-10
Berlin, in the Kingdom of Prussia, 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 present invention relates to a detachable bolt connection for any parts for
which an easy connection and quick and easy detachment or uncoupling even from
some distance, as for instance by means of a drawing strap is desirable. The parts
to be connected have such a form that they are connected together by means of a
bolt acting as a pin or connecting link and alter the removal of the same are only
loosely in connection with each other. According to the invention the bolt is
constructed of two parts adjustable une within the other in such a manner that its
release is only possible by a pull acting axially, whereby the inner part is drawn
out and the outer part is loosened for removal, whilst the replacing of the same in
the parts to be connected when in position can take place after the drawing
out of the inner part of the bolt. As an example of the application of the
invention:-
For
Figure 1 shows in side view the use of the said bolt for forming a detachable
connection between the draw bars of a carriage and the harness of a horse,
wherein the draw bars of the carriage are left out and an extra piece is attached to
the harness, between the perforated folds of which a projection from the draw bar,
also perforated, is arranged and the bolt serves for the connection of the bar with
the harness through the holes of the folds and of the projection aforesaid.
this purpose it is important that the bolt connection shall be easily detachable from
the coachman's box in case the horse should fall or become unmanageable and bolt,
in order that the horse may be immediately released from the carriage. The bolt
connection is also of importance for harnessing and unharnessing. It may also be
applied to numerous other purposes and the method of application illustrated is as
already stated only by way of example.
Figures 2 to 7 show on an enlarged scale the bolt. and the parts of the harness
to be connected thereby..
Figure 2 is a front view of the buckle on the harness of the horse with inserted
bolt without a perforated intermediate piece attached to the draw bar.
Figure 3 is an end view of Figure 2 with the perforated connecting piece to the
draw bar illustrated in the figure and to the bolt placed in position.
Figure 4 is partly a front view of the buckle and partly a vertical section
through the perforated connecting pieces of the buckle in the holes of which the
bolt engages.
Figure 5 is a view from above of the perforated connecting piece to the
draw bar.
Figure 6 is a middle vertical section on an enlarged scale through the bolt
inserted in its place and secured therein.
Figure 7 is
corresponding vertical section through the bolt released for
removal from its place.
The buckle frame a suitably attached to the harness of the horse (Figure 1) has,
two projecting pieces b b provided with holes for the reception of the detachable.

page_text: bolt, between which the perforated piece c¹ provided with corresponding hole
and fixed to the draw bar c can be interposed (Figure 3). The connection of the
draw bar of the carriage with the harness of the horse takes place by inserting the
piece c' between the projections 66 and the passing of a bolt through the corre-
sponding holes of the said parts. The bolt consists of an outer conical sleeve d
(corresponding to which the above mentioned holes are of different sizes) with an
inner pine which fits in the upper cylindrical bore of the sleeve d and provided
above with a connection.g and link g. The pin e is reduced conically somewhere
about the middle at say and around the lower thinner end e² is arranged a spiral
spring h, which presses on the one side against a disc i at the end of the pin e³, on
the other hand against the shoulder d' of the sleeve d and strives to bring the pin e
into the position shown in Figure 6. The sleeve d is provided with conical
apertures k serving as bearings for balls which, when the bolt is in place and the
pin e inserted partly engage in a corresponding groove m of the piece b and in this
manner effect a locking of the bolt in its position so that the release of the
perforated connecting piece c¹ from between the projections 6 61 of the buckle a
cannot take place. When it is desired to effect such release it is only necessary to
draw the pin e against the pressure of the spring so far that its conical part e is
brought to the level of the balls that is of the conical holes k of the sleeve d;
thereby the balls quit the seating m of the piece b, upon which a further pull at
the pin e through its ring g' lifts the entire bolt out (Figure 7) and the connection
between the parts c¹ and bis broken. This drawing of the pin e is effected by
means of a cord n or other suitable means which is carried through guiding pieces o
so as to ensure a vertical action on the bolt and brought to the coachman's seat, so
that the driver can at any time by means of a jerk of the cord n release the con-
nection between the horse and the draw bars. For the purpose of replacing the
bolt in the parts cbb when effected together, the inner pin e must be. inserted
under compression of the spring h so far that the balls apply themselves against
the conical part e' of the bolt and admit of the unchecked introduction of the
sleeve d.
Figures 8 to 13 show a modification in which only the form of the parts is
somewhat altered.
Figure 8 is a front view of the buckle with inserted bolt.
Figure 9 an end view of the same with the connecting link of the draw bar
inserted, and bolt in place.
Figure 10 is a view of the buckle with its projections in vertical section without
the bolt.
Figure 11 a view from above of the connecting link to the draw bar.
Figures 12 to 13 middle vertical sections through the bolt in the fixed position
and also in that requisite for releasing.
The bolt a (Figures 8, 9, 10) possesses a projection 62 with a mouth shaped
opening and perpendicular hole & together with an upper ringed notch m¹ for
the reception of the balls of the bolt, which in this arrangement corresponds to
the construction already described excepting 'certain unimportant alterations of
form. The cap f of the construction already described is omitted, but on the
other hand the boring of the sleeve d is closed at its upper end by means of the
strengthened part es on the drawn down bolt e. To the draw bar c is attached a
simple folded connection with a hole et which connection fits into the mouth
shaped opening 63 of the buckle connection 62, so that the hole e corresponds to
the boring and they form consequently the holder for the bolt when inserted.
The mode of action and method of operating this arrangement is the same as
already described with reference to the first modification.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, 1 declare that what I
claim is:-
A detachable bolt for the connecting together of parts engaged in each other

page_text: and provided with holes for the bolt consisting of an outer sleeve d in whose
central boring a pin e having a conical part e' disc i and spring his movable in
the longitudinal direction and balls in conical recesses k of the sleeve, together
with the piece m of the one connecting part, together effect the retaining of
the bolt connecting the different parts, whilst on drawing out the pin, the
part e of the same effects the release of the balls substantially as described and
illustrated.
2. The application of the releasable bolt as claimed in Claim 1 to the harnessing
of horses for the purpose of connecting the draw bar with the harness of the
horse, in which a buckle a is made use of having perforated projections bbl or a
vertically perforated projection 63 with mouth shaped openings 63 between which
or in which the connecting link c' or secures it to the draw bar c substantially as
described and illustrated.
с
3. The connection of the middle pin e by means of a cord n carried through
guides or loops to the coachman's seat or the interior of the carriage, in order in.
case of need to render it possible to effect the release of the bolt connection by
pulling the cord from the carriage, substantially as described and illustrated.
Dated the 1st day of December 1896.
W. P. THOMPSON & Co.,
322, High Holborn, London, W.C., Patent Agents for the Applicant..