Improvements in or connected with Lifting Gear, applicable to Cranes, Lifts, and other Apparatus.
Year: 1890

page_text: Date of Application, 11th Oct., 1890
Complete Specification Left, 11th July, 1891-Accepted, 15th Aug., 1891
PROVISIONAL SPECIFICATION.
Improvements in or connected with Lifting Gear, applicable to
Cranes, Lifts, and other Apparatus.
I, JOHN WILLIAM PATEMAN, of 40 Parson's Mead, West Croydon, in the
County of Surrey, Engineer, do hereby declare the nature of this invention to be
as follows:
--
The invention has for its object, the application to lifting gear generally of an
improved construction of self sustaining apparatus.
will describe my invention as applied to a cage lift, but would remark that it
is also, by the aid of such modifications as will readily suggest themselves to a
practical engineer, equally applicable to cranes and to other varieties of lifting
mechanism, and I would further remark that my improved construction of self-
sustaining apparatus is applicable to either the main driving shaft, or to a counter
or intermediate shaft, according to the construction of lifting gear and to the
requirements and conveniences of each particular case.
In a cage lift, the cage rope wheel is keyed upon a shaft mounted in suitable
bearings fixed to convenient supports. One of these bearings is formed with
brackets or projections to carry studs, on which automatic eccentric friction stops
are mounted. The shaft has fixed thereon a collar, one side of which fits against
the edge of the bearing carrying the automatic stops, whilst on the other side of
such collar is mounted loosely on the shaft, a friction wheel whose rim is capable of
being gripped on its inner surface by the automatic friction stops; the boss of this
friction wheel is faced on one side to fit against the collar and on the other side,
which is of larger diameter, is formed with a friction surface, against which a
corresponding friction surface on the boss of the hand rope wheel is capable of
being forced, as hereinafter described.
The outer face of the boss of the hand rope wheel is formed with a double
inclined clutch, each incline of which extends to about a quarter of the circum-
ference and acts in co-operation with studs projecting from each side of the shaft
and formed preferably of a suitably shaped bar or rod passed through and fixed in
a hole cut transversely through the shaft.
Thus, on pulling the hand rope to raise the lift, the hand wheel is, by the
combined action of the studs on the shaft and of the double inclined clutch on its
boss, forced against the friction wheel and this latter is forced against the collar,
thereby locking together the shaft, hand rope wheel, and internal friction disc,
which will all revolve together and thereby lift the cage, but if the weight of the
cage should overbalance the power applied to the hand wheel, or if the latter
should be released, the load will immediately come to a stand-still by the automatic
eccentric friction stops biting against the inner surface of the rim of the friction
wheel, thereby stopping the motion of the shaft until such time as the hand whool
is again rotated or has a power applied thereto sufficient to raise the lift.
Dated October 11th 1890

page_text: Improvements in or connected with Lifting Gear, applicable to
Cranes, Lifts, and other Apparatus.
I, JOHN WILLIAM PATEMAN of 40 Parson's Mead, West Croydon in the
County of Surrey, Engineer, 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 invention has for its object the application to lifting gear generally of an
improved construction of self sustaining apparatus.
will describe my invention as applied to a cage lift, but would remark that it is
also, by the aid of such modifications as will readily suggest themselves to a
practical engineer, equally applicable to cranes and to other varieties of lifting
mechanism and I would further remark that my improved construction of self
sustaining apparatus is applicable to either the main driving shaft or to a counter
or intermediate shaft according to the construction of lifting gear and to the
requirements and conveniences of each particular case.
In a cage lift, the cage rope wheel is keyed upon a shaft mounted in suitable
bearings fixed to convenient supports. One of these bearings is formed with
brackets or projections to carry studs on which automatic friction stops are
mounted.
The shaft has fixed thereon a collar one side of which fits against the end or face
of the bearing carrying the automatic stops whilst on the other side of such collar
is mounted loosely on the shaft a friction wheel whose rim is capable of being
gripped on its inner surface by the automatic friction stops; the boss of this
friction wheel is faced on one side to fit against the collar and on the other side,
which is of larger diameter it is formed with a friction surface against which a
corresponding friction surface on the boss of the hand rope wheel is capable of
being forced as hereinafter described.
The outer face of the boss of the hand rope wheel is formed with a double
inclined clutch each incline of which extends to about a quarter of the circumference
of the boss and acts in co-operation with studs projecting from each side of the
shaft and formed preferably of a suitably shaped bar or rod passed through and
fixed in a hole cut transversely through the shaft.
Thus on pulling the hand rope to raise the lift, the hand rope wheel is by the
combined action of the studs on the shaft and of the double inclined clutch on its
boss, forced against the friction wheel and this latter is forced against the collar
thereby locking together the shaft hand rope wheel and internal friction wheel
which will all revolve together and thereby lift the cage or load but if the weight
of the cage or load should overbalance the power applied to the hand wheel or if
the latter should be released the load will immediately come to a stand still by the
automatic friction stops biting against the inner surface of the rim of the friction
wheel, thereby stopping the motion of the shaft until such time as the hand wheel
is again rotated or has a power applied thereto sufficient to raise the lift.
And in order that my said invention may be more clearly understood and readily
carried into effect I will proceed aided by the accompanying drawings more fully
to describe the same.
DESCRIPTION OF THE DRAWINGS.
Figure 1. is an elevation and
Figure 2 is a plan both partly in section, of my improved self sustaining lifting
gear applied to a single shaft.
IN

page_text: nand rope wheel and the cage or load rope wheel are on separate shaits connected
together by suitable gearing.
In all the figures like parts are indicated by similar letters of reference.
I will first describe the arrangement shown at Figures 1 and 2.
a represents the hand rope wheel which is mounted loosely on the shaft a
carrying the same, b. ¿¹ the bearings for such shaft, and e the beams carrying such
bearings.
The bearing is formed with brackets or projections on which automatic
friction stops d. d are mounted. The shaft a has fixed thereon a collar ², see
Figure 2, one side of which fits against the end or face of the bearing whilst on
the other side of such collar is mounted loosely on the shaft a a friction wheel e
whose rim is capable of being gripped on its inner surface by the automatic
friction stops d. d the boss of this friction wheel e is faced on one side to fit against
the collar a² and on the other side, which is of larger diameter, it is formed with a
friction surface against which a corresponding friction surface on the boss of the
hand rope wheel a' is capable of being forced as hereinafter described.
The outer face of the boss of the hand rope wheel is formed with a double
inclined clutch a³ each incline of which extends to from about a quarter to a half
of the circumference and acts in co-operation with studs a projecting from each
side of the shaft a, and formed preferably of a suitably shaped bar or rod passed
through and fixed in a hole cut transversely through the shaft af, is the cage or
load rope wheel which is keyed on the shaft a.
Thus on pulling the hand rope g, in the direction of the arrow to raise the lift or
load, the hand rope wheel a', is by the combined action of the stud a', and of the
double inclined clutch a³, forced against the friction wheel e, and this latter is
forced against the collar a² thereby locking together the shaft a, hand rope
wheel a', and internal friction wheel e, which will all revolve together and thereby
lift the cage or load, but if the weight of the cage or load should overbalance the
power applied to the hand wheel a or if the latter should be released the load will
immediately come to a standstill by the automatic friction stops d biting against
the inner surface of the rim of the friction wheel e, thereby stopping the motion of
such shaft a, until such time as the hand rope wheel a is again rotated in the
direction for lifting or has a power applied thereto sufficient to raise the lift or
load.
In the arrangement represented at Figure 3 the hand rope wheel a' instead of
being loose on the shaft a is keyed thereon and the cage or load rope wheel/
instead of being keyed on the shaft a, is loose thereon and the double inclined
clutch a³ instead of being on the hand rope wheel a' is on the load or cage rope
wheel by which means when rotating the hand rope wheel a' for lifting a load the
shaft will be rotated and the boss of the load or cage rope wheel will be forced
against the boss of the friction wheel e and the latter will be forced against the
collar a² so as to cause all such parts to revolve together with the shaft a, and
thereby lift the load; but if the latter should overbalance the power applied to the
hand rope wheel a' or if the latter should be released the load will immediately
come to a standstill.
In the arrangement represented at Figure 4 the hand rope wheel a' is keyed on
the shaft a, and the friction wheel e, and stops d, are arranged in the same manner
as that shown at Figure 3, but the load or cage rope wheel is keyed on a second
shaft and the shafts a, and are geared together by pinion a' and toothed
wheel whilst the double inclined clutch a³ is formed on the pinion as and acts to
force the latter against the friction wheel e.
For lowering a load the rope y is pulled in the contrary direction to that for
lifting which causes the inclines a³ to run away from the studs at or the latter to
run down the inclines a³, thereby liberating the friction wheel e and by such means
enabling the shaft a hand rope wheel a¹ and load wheel to rotate in the direction
for lowering the load independently of the friction wheel but in such case in the
event of the load over-running the speed of the hand rope wheel the parts will be

page_text: immediately bound together by the action of the inclines and studs at whereby
the automatic stops d will be caused to bite against the friction wheel e and the
load thereby brought to a standstill.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed I declare that what I
claim is: :―
1. The combination with lifting gear for cranes; lifts and other apparatus; of the
improved construction of self sustaining apparatus substantially as herein shown
and described.
2. The peculiar combination and arrangement of self sustaining lifting gear for
cranes, lifts and other apparatus substantially as herein shown and described.
J. W. PATEMAN.
By Harris & Mills,
23, Southampton Buildings, London, W.C., Agents: