Locking Device for Clutch-couplings with Sloping Teeth.
Year: 1899

page_text: COMPLETE SPECIFICATION.
Locking Device for Clutch-couplings with Sloping Teeth.
I, ANTON RAKY, of Erkelenz, in the Province of the Rhine, German Empire,
Manager, 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:-
=
Clutch-couplings of usual design having sloping teeth are automatically un-
coupled when the driven shaft moves in advance of the driving shaft owing to
a sudden stoppage of the latter or when the rotation suddenly lessens.
This uncoupling is due to the fact that the sloping edges of the coupling teeth,
slide upon one another so that the movable coupling part is pushed backwards.
To prevent an automatic or more precisely an accidental uncoupling is the chief
purpose of this present invention.
.
My mechanism essentially consists of an elastic tappet arranged upon one
of the coupling parts and taking into a recess or bearing of corresponding form
provided in the second coupling part, so that when in engagement both parts must
rotate together. Evidently my tappet, may have any suitable form and it is of no
importance whether it is arranged upon the fixed or upon the loose coupling
part.
In the accompanying drawings four modified constructions of my locking.
mechanism are provided. All of the figures show two shafts A B to be coupled,
the fixed coupling part 1) is mounted upon the shaft B, so as to be capable of
sliding upon it.
The couplings are provided with teeth and a having sloping edges c c¹. In
the construction illustrated in Figures 1-4 the cheeks f located upon the movable
part D at opposite sides of the same form bearings for the tappets d, the latter
being movable upon bolts g and kept in the position illustrated by means of
springs e. The fixed coupling part correspondingly is provided with noses or
projections 6 having inclined faces. When the coupling is brought into engage-
ment, the tapnets & slide upwards upon the inclined noses b and when the exact
coupling position is attained, take behind the noses.
When the shaft rotates in the direction of the arrow, the coupling is effected
by means of the sloping coupling teeth well known to everybody, skilled in the
The advancement of the driven shaft in relation to the driving shaft is
prevented by the catches or tappets d.
art.
The construction illustrated in Figures 5-8 represents another form of
tappet d. It is of wedge-form and rests in a corresponding guide provided in
the head C. Helical springs e are provided to push the tappet d into working
position.
As is clearly shown in Figures 5 and 6 the part C which carries the wedges d
and is constructed especially strong. The working of this arrangement is
evidently the same as explained for Figures 1-4. During the engagement of the
coupling the wedge & first is pushed backwards and as soon as the coupling parts
are in exact position to another, the wedge takes into a wedge-formed recess of
the nart D.

page_text: The modified form illustrated in Figures 9-12 with respect to the before
explained construction shows the difference that the tappets d are arranged
rotatably around the bolt g, whereby they are pressed out of the coupling part C
by means of helical springs. When the engagement takes place the tappets are
pressed into a recess of the head C and automatically take into corresponding
recesses of the movable head D when both parts are in exact position.
Figures 13-16 illustrate another modified form in which the tappets are
movable upon bolts g arranged upon the part D. Springs e are fixed to special
projections and f and elastically keep the tappets d in right position.
Upon the fixed coupling part C, two noses are arranged, behind which engage
the flaps d as soon as both coupling parts are in right position.
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
Locking device for clutch-couplings, consisting of an elastic tappet arranged
upon one of the coupling parts and engaging into a recess of corresponding form
provided in the second coupling part thereby preventing an accidental uncoupling,
substantially as described."
KONTA
OTTTA
naier
TRATATAY
σώμα κα
1533.
GEO. H. RAYNER,
37, Chancery Lane, London,
Agent for the Applicant.