Improved Engaging and Disengaging Clutch Coupling with Safety Brake.
Year: 1893

page_text: COMPLETE SPECIFICATION.
Improved Engaging and Disengaging Clutch Coupling with
Safety Brake.
1, ALBERT FÜKENWIRTH, of Poln, Peterwitz near Schmolz in the Province of
Silesia in the Empire of Germany, Master Smith, 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 the combination of a clutch coupling with a
brake for effecting the instantaneous stoppage of the driving gear in portable
engines or other machinery on disengaging the coupling, I will explain my invention
with reference to the accompanying drawings, in which:
Fig. 1 is a vertical section of the geared coupling with the brake bow the lever
mechanism being removed,
Fig. 2 is a plan view of the coupling;
Fig. 3 is a side view of the coupling in the geared or engaged position ;
Fig. 4 is a side view partly in section of the coupling in the disengaged position,
Fig. 5 is a face view and cross section of the coupling body,
Fig. 6 is a face view and cross section of the brake ring
Fig. 7 a view and cross section of the disengaging coupling box and,
Fig. 8 an elevation of the coupling bolt.
The construction under notice consists of the coupling box or body a (Figs. 1 & 5)
with which the sleeve or slide box sliding on the coupling bolt d (Fig. 7) engages,
and also of a brake ring c inserted between the above (Fig. 6) and the spanning
parts e and f of the brake and pivoted on the part g. At the bottom of the coupling
box or body as shown in Fig. 5 the two clutchess are arranged whose measurement
is such, that, when the brake ring c is placed on same, only a slight space is left
between both parts.
The coupling box a is cast with two sockets for fastening the coupling to the
driving shaft.
Corresponding to the form of the clutchess of the coupling box a, notches or
slots are made in the brake ring c, by means of which, the clutches of the slide
box benter the engaged position.
The slide box has the usual form and is thrust into the engaging position by
the lever k. This lever k is pivoted on to the arm g of the brake part f, and
engages by its projection p the slide box b, being actuated by the lever i,
on the stop screw-m.
acting
The end of lever is bolted between the arms or prongs i, i which are pivotally
connected with the eye bolts h of the brake by their eccentrically formed
eyes
These bolts pass through the flanges of the brake parts e and f, being fastened
at the outside of the latter. Spiral springs keep the two parts e and ƒ always
apart.
The brake parts have sloping or roof-formed surfaces as shown in Fig. 1 as also
the annular parts of the coupling box a together with the brake ring c in order to
ensure the spring spanning parts e and being in the proper position against the
coupling box a aud also to always keep the brake ring c on said coupling
box a.
The end of the coupling bolt (Fig. 8) is threaded and screwed in the coupling
box a, being fastened underneath by a nut and washer.
The keys or guides u, u serve for guiding the slide box bin position. The
coupling bolt is arranged to form the socket for the end of the driving shaft w and
is provided with a set screw

page_text: In the engaged position shown in Fig. 3, an eye bolt pivoted on to the lever k
passes through the eye of the lever and by the pressure of a spiral spring
causes the slide block to keep the shaft coupled. The coupling is disengaged by
pressure from the lever against the stop screw m.
The clutches t of the slide box disengage with the clutchess and the eccentric
hinge joint 3 entering simultaneously in operation the spanning parts e and f of the
brake are drawn together and stop the driving shaft by means of the coupling
box a and the other gear by the ring e and slide box b.
The spring of the eye bolt 1 is expanded in the uncoupled position and causes
simultaneously with the two springs of the bolt (also expanded) and excentrics &²
the automatic coupling of the whole mechanism.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is:
1) An improved engaging and disengaging coupling with safety brake consisting
of a coupling box or body (a) a brake ring e and a slide box or sleeve constantly
locking with said brake ring and with a tendency to adopt the engaging position
by connection with levers and k, in such way that by means of a stop screw m
mounted on the lever k, the coupling can be disengaged by the lever i substantially
as described and shown in the drawings.
2) In an engaging and disengaging coupling, the automatic stoppage of the
shaft immediately the coupling is disengaged by means of the eccentrics and
the connected spring d spanning parts e and f of the brake, substantially as
described and shown in the drawings.
3) The general construction and arrangement of the improved engaging and
disengaging clutch coupling and safety brake, substantially as and for the purpose
described and shown in the accompanying drawing.
Dated this 24th dor of Marsh 1902
HUGHES, ELI & HUGHES,
76, Chancery Lane, London, W.C., Agents for the Applicant.