Year: 1888

page_text: I, LEANDRE MEGY of 72 Boulevard Haussmann, Paris, France, do hereby
declare the nature of this invention to be as follows:-
This invention has for object improvements in hoisting and lifting apparatus. The
driving pulley or crank handle transmits the power applied to it through a brake box
or frictional coupling of the kind described in the specification of former Letters
Patent No. 4452 of 1881 to a pinion loose on the shaft carrying the chain barrel or
sheave. To this wheel there is connected a pinion which gears with two other pinions
arranged diametrically opposite each other and revolving on axes carried by a plate
attached to the chain barrel or sheave. These pinions gear with a fixed internally
toothed ring, revolving both on their axes and between the ring and the pinion by
which they are driven, after the manner of a sun and planet motion.
The brake box or frictional coupling is adjusted so as to slip, in the case of abnormal
resistance.
In case of acceleration of the descent, an automatic brake, arranged in the same box
as the frictional coupling controls the descent in such a manner as to obviate all
accident.
LÉANDRE MÉGỲ,
Per L. W.

page_text: I LEANDRE MEGY 72 Boulevard, Haussmann, Paris, France, 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 :-
This Invention relates to improvements in hoisting apparatus such as winches,
capstans, cranes and the like, and is applicable equally to apparatus operated by hand
or by power, whether stationary or movable.
The object of this invention is to reduce the weight and bulk of such apparatus
without diminishing their safety and simplicity, or reducing their capability of action.
On the annexed sheet of drawings, apparatus according to this invention is illustrated
applied to a winch of very small size but yet of very considerable power.
Figure 1 is a side elevation of this improved winch.
Figure 2 is a front elevation.
Figure 3 is a cross-section through the chain wheel and the brake or clutch box.
Figure 4 is a longitudinal section through the axis of the chain wheel.
Figure 5 is a diagram of the planet motion forming part of the gearing.
A is the framing of the apparatus which may be turned by hand or which may be
replaced by the crank of a steam engine or other motor.
B the crank, Ca regulating brake or clutch box of the kind set forth in the Specifica-
tion of former Letters Patent No. 4452 of 1881.
Da driving pinion formed in one piece with the loose pulley C which serves as a
brake or clutch box.
E is a gear wheel mounted loosely on the shaft of chain wheel.
F is a pinion formed in one piece with the wheel E and therefore also loose on the
chain wheel shaft. G is the chain wheel shaft. H the chain wheel with recesses for the
links of the hoisting chain; it may be fixed or not upon the drum shaft G. I circular
plate formed in one piece with or connected to the drum, and also by means of
ribs K. L. with the adjacent parallel plate I¹.
M. M. are pinions so mounted between the plates I. I' which serve as supports to
their spindles, that they form planet pinions.
N is an internally toothed ring fixed to the framing A.
The method of operation is as follows:-
On turning the crank B in the direction of the arrow, which corresponds to the
hoisting of the load, the rotary movement of the shaft is transmitted through the
medium of the brake or clutch situated inside the box C to the pinion D.
The latter is in gear with the wheel E and causes the central pinion F to rotate,
and this in turn imparts rotary movement to the pinions M. M.
These pinions engage at the same time with the internal teeth of the fixed wheel N
which serves them as a fulcrum. At the same time that they rotate about their axes
they also rotate about the shaft G carrying round with them the plates I' I and the
chain wheel H.

page_text: The brake contained in the box C is so adjusted that it will slip without taking the
pully with it, in case an abnormal resistance should be encountered.
Also in case of acceleration or undue speed of the load during the descent an
automatic brake with central centrifugal weights arranged in the same box, by the side
of the driving brake, controls the descent in such a manner as to prevent accidents.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. In hoisting apparatus, such as winches capstans and the like, the combination
with a brake or. cluch box such as C of a pinion D a wheel E a pinion F planet
pinions M. M. toothed ring N and a chain wheel H all substantially as described.
2. The improved winch constructed arranged and operating substantially as described
with reference to the drawings.