IMPROVEMENTS IN WHEELS AND PULLEYS
Year: 1884

page_text: PROVISIONAL SPECIFICATION.
"
. I, EMIL CAPITAINE of the firm of Capitaine & von Hertling of 89 Chancery
Lane in the County of Middlesex, Civil Engineer,,, do hereby declare the nature
of said invention for "IMPROVEMENTS IN WHEELS AND PULLEYS
cation from abroad by H. R. Leichsenring of Schönebeck a. d. Elbe in the German
Empire to be as follows:-
a communi-
These improvements consist in general in the special arrangement, pattern and
combination of the individual parts of wrought iron pullies, drums and wheels.
The principal parts of the pullies, drums and wheels in question, are in the first
place, the nave, in the second place,-the arms, and in the third place, the rim.
These improvements specially refer to the creation of a durable connection,-and
the fastening, secured against vibration and shocks, of the arms into the nave
and the rim; finally in the application of split and conical or taper boxes which
are used if the boro of the nave be larger than the diameter of the shaft or axle.
Those ends of the arms which are to be connected to the rim are strengthened
or widened out, in such a manner that they may be suitably connected by screws
or rivets to the rim.
The arms are fixed in the nave in such a manner that they reach up to the shaft,
axle, or box (hereinafter described) on which the pulley drum or wheel is placed.
Any further travel of the arms inwardly in a radial direction is prevented, thereby
and to obviate the same movement outwards pins a put through the nave and arms.
In order to fix pullies, drums and wheels with arms of wrought iron or steel on
shafts or axles of smaller diameter than the bore of the nave; I take the following
means-One or two split boxes are applied, the bore of which is equal to the
diameter of the shaft or axle. Outwardly the box is turned taper the nave being
bored correspondingly taper in the whole of its length when one box is used, and
when two boxes are used, viz, one on each side the bore is divergently taper on
both sides.
:
If the box or boxes is or are driven into the nave, it or they surround the shaft
or axle, and the pulley drum or wheel is secured in position..
The split and conical box or boxes thus have the double purpose of fitting a
pulley drum or wheel to a smaller shaft or axle, and to fix the pulley drum or
wheel exactly central on a shaft or axle.
Dated this 8th day of September 1884

page_text: COMPLETE SPECIFICATION.
་།
I, EMIL CAPITAINE of the firm of Capitaine & von Hertling of 89 Chancery
Lane, in the County of Middlesex, Civil Engineer do hereby declare the nature
of said invention for "IMPROVEMENTS IN WHEELS AND PULLEYS" a communi-
cation to me from abroad by H. R. Leichsenring of Schönebeck an der Elbe in
the German Empire and in what manner the same is to be performed to be
particularly described in and by the following statement :-
.
These improvements consist in the method of constructing and arranging the
various parts of wheels and pulleys (or drums) made wholly or in part of wrought-
iron or steel, they also consist in the application of split or solid taper bushes to
the bore of the naves of wheels and pulleys for the purpose of fixing wheels and
pulleys having a bore larger than the shaft on which they are to be fixed.
Referring to the accompanying sheet of illustrative drawings:-
Figs 1 and 2 are sectional views of the nave of a wheel or pulley, the first with
a single solid, bush B taper outside and parallel in bore to fit the shaft, the second
with two split bushes C. The solid bush shewn in Fig 1 is fixed tight in the nave
by means of the nut E, and the split bushes shewn in Fig 2 are fixed tight in the
nave and over the shaft by being driven in with a hammer. H are the arms the
nave ends of which are brought down flush with the busb, or when a bush is not
applied, then flush with the bore of the wheel or pulley so that they bear either
against the outer surface of the bush or shaft; they are secured in their position
in the nave by means of pins or rivets G.
Fig 3 shews a method of constructing the rim end of the arms of wheels and
pulleys and fixing it to the rim; this is effected by rivetting, the rim being
drilled through and countersunk.
Figs 4, 5 & 6 shew another arrangement for 'fixing the arms to the rim, the rim
being drilled and the metal compressed so as to form a circular recess for the head
of the rivet. By this means the advantage is gained of allowing the rim to be
comparatively thin and light.
Figs 7 and 8 shew respectively the usual method and my improved method of
connecting the arms to the rim,
Figs 9 and 10 shew a pulley and taper bush made up of separate halves.
Figs 11 and 12 shew a different form of pulley with a bush split at one point
only.
This invention will allow of wheels and pulleys of a normal and similar
dimension of bore being kept in stock and fitted to dissimilar sized shafts as occasion
may require.
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
"
1. In wheels and pulleys the taper bored nave for the reception of and in
combination with solid, split or divided bushes, substantially as herein before
described and illustrated in the accompanying drawing and for the purpose
specified.

page_text: 2. In wheels and pulleys, the method of fixing the arms into the nave in such
manner that the ends of the arms bear against solid, split or divided bushes, or
against the periphery of the shaft, and are secured to the nave by means of a
rivet or a pin or rivets or pins substantially as herein before described and
illustrated in the accompanying drawing.
ད
3. In wheels and pulleys the method of fixing the arms to the rim, the rim being
drilled and the metal of the rim compressed so as to form recesses for the reception
of the heads of the rivets, or bolts, substantially as described with reference to
Figs 4, 5; 6 and 8 of the accompanying drawing.
Dated this 6th day of June 100%
EMIL CAPITAINE.