An Improved Portable Windlass.
Year: 1892

page_text: Date of Application, 19th Mar., 1892-Accepted, 23rd Apr., 1892
COMPLETE SPECIFICATION.
An Improved Portable Windlass.
I, OSCAR WITTE, of Bahnhof Strasse, Bodenbach a/E, Bohemia, in the
Empire of Austria, Merchant, do hereby declare the nature of my said invention
and in what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement :-
The object of my invention is to manufacture an improved form and arrangement
of portable windlass, with change gear, to be worked by manual power, and suit-
able for use in building operations: in mines and quarries: for raising and lowering
ships' anchors, and other analogous purposes.
And in order that my said invention may be particularly described and ascer-
tained, reference is hereby made to the accompanying drawings, in which similar
figures of reference indicate corresponding parts.
Fig. 1 is a side view, Fig. 2 an end view, Fig. 3 a plan, and Figs. 4 to 10 are
views of some of the details of the mechanism.
The frames 11 are held in position by distance bolts and nuts in the usual
manner, as shown in the drawings. 2 is the barrel or drum, loose on the axle 3.
4 is a clutch fitted to the axle 3 and carried round therewith by means of feathers 55
fitted to the axle. 6 a forked lever, pivoted to a bearing at 7, for putting the
clutch in and out of gear with the drum 2. The forked lever 6 is also shown
separately in Fig. 6, at right angles to that shown in Fig. 1. An end view of the
clutch 4 is also shown in Fig. 4, and an end view of the barrel or drum 2, at the
clutch end in Fig. 5. 8 is a worm wheel fast on the axle 3. 9 is a worm, fast on
the vertical axle 10, and in gear with the wheel 8. 11 is a bevel wheel fast on the
worm shaft 10. 12 is a bevel wheel in gear with the wheel 11, the wheel 12 being
actuated by the hand crank 13.
14 is a toothed wheel, fast on the drum 2. 15 is a toothed pinion fast on the
shaft 16. The pinion 15 is capable of being placed in or out of gear with the
wheel 14, by moving the shaft 16 longitudinally in its bearings, the shaft being
retained in position by the forks 17 and 18, in the usual manner; the fork 17 being
used to retain the pinion 15 out of gear and the fork 18 to hold the shaft 16 when
15 is in gear with the wheel 14. The forks 17 and 18 are pivoted to the rod 19.
The fork 18 is shown also in Fig. 7, and the fork 17 in two positions in Figs. 9
and 10, 24 is an ordinary brake operated by the lever 20; shown also in Fig. 8.
21 is a toothed pinion fitted to the shaft 16, whereby the load can be prevented
from running back when the spring pawl 22 engages one of its teeth. 23 is a hand
crank fitted to the shaft 16. A similar crank may be fitted at 25, when the worm
gear is out of use.
The operation is as follows:-When great lifting power is required, the pinion 15
is placed out of gear with the wheel 14, as shown in Figs. 1 and 3. The clutch 4
is connected with the barrel 2, and the worm gear is used in hoisting. When less
lifting power and a more rapid motion is required, the clutch 4 is disconnected, and
the shaft 16 is shifted longitudinally, so as to place the pinion 15 in gear with the
wheel 14; one or two hand cranks being used, as required. When holding a load
suspended the pinion 21 and spring pawl 22, or the brake 24 may be used. When
lowering the load or unwinding a rope or cable, both power gears may be dis-
connected, and the rotation of the barrel 2 controlled by the brake 24.
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 a manual power windlass, the combination of a drum, mounted loosely

page_text: upon an axle, and fitted with disconnecting worm and pinion driving gear, sub-
stantially as and for the purposes herein before described and illustrated by the
drawings.
2. The general construction, arrangement, and combination of the several and
respective parts, together forming my invention of an improved portable windlass,
substantially as herein before described and illustrated by the drawings.
Dated 19th March 1892
GEO.
DOWNING,
8, Quality Court, London, W.C., Agent.