Year: 1885

page_text: I, HARRY JOHNSON MACKLIN of No 67 Albion Place, Ulverston, in the County
of Lancaster, Engineer, do hereby declare the nature of this invention to be as
follows:-
My invention relates to a mode of fastening wheels or pulleys securely upon
axles or shafts in such manner that they can be readily removed and replaced when
required, as for example, in the event of breakage or wear.
For this purpose a pin or pins traversing the axle or shaft and entering a hole
or recess or holes or recesses in the wheel nave or boss is or are used in conjunction
with a key arranged longitudinally of the nave or boss in such a way that it serves
to look the pin or pins in place. In the accompanying sheet of drawings two
examples are shown by way of illustration. According to Fig. 1, a single pin is
used whereas in Figure 3 two pins are shown. Fig. 2 is a front elevation of a wheel
such as represented in section in the other figures. Referring to Fig. 1, A is au axle
or shaft having a transverse hole through it; B is a wheel boss also having a hole
through it transversely. This hole is smaller at the end F than at D. C is a pin
introduced (after placing the wheel on the axle or shaft with the holes in line)
through D and through the hole in the axle or shaft. E is a key that intercepts
the line of holes. The key is driven in from the inner side of the wheel and
is then clenched or split or otherwise secured at the outer side to prevent its
working back,
The arrangement illustrated in Fig. 3 differs only in the use of two pins with
corresponding holes in lieu of one. Although the drawings illustrate the invention
as applied to flanged wheels it will be evident pullies and other wheels may be
similarly fastened to shafts or axles.
As will be evident, the pin or pins traversing the axle or shaft and entering the
nave or boss of the wheel or pulley will effectually prevent its leaving the axle or
shaft, whilst the pin or pins are in turn securely locked in place by the key.
تيمم
1
100K

page_text: improvements in the Fastening of wheels or rumeys upon
Axles or Shafts.
I, HARRY JOHNSON MACKLIN of N° 67 Albion Place, Ulverston, in the County
of Lancaster, 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:-
My invention relates to a mode of fastening wheels or pulleys securely upon
axles or shafts in such manner that they can be readily removed and replaced when
required, as for example in the event of breakage or wear.
For this purpose a pin or pins traversing the axle or shaft and entering a hole
or recess or holes or recesses in the wheel nave or boss is or are used in conjunction
with a key arranged longitudinally of the nave or boss in such a way that it serves
to lock the pin or pins in place. In the accompanying sheet of drawings two
examples are shown by way of illustration.
Fig. 1 is a face view of a flanged wheel. Fig. 2 is a central transverse section
showing the arrangement for fastening to a shaft when only one pin is used.
Fig. 3 is a like view illustrating the application of two pins. Fig. 4 is a section
to a larger scale at right angles to Fig. 2 or 3, showing the boss, shaft and key.
Fig. 5 is a similar view of a modification.
Referring to Fig. 2 A is an axle or shaft having a transverse hole through it.
B is a wheel boss also having a hole through it transversely.
This hole is smaller
at the end F than at D, or it may be closed or partly closed at or near the one end
or be of tapering form, the narrower end being at F. C is a pin introduced (after
placing the wheel on the axle or shaft with the holes in line) through D and
through the hole in the axle or shaft. E is a key that intercepts the line of holes.
The key is driven in from either side of the wheel but preferably from that side
at which the axle bearing nearest the wheel is situated, that is to say the key is
driven in from the inner side of the wheel for inside bearings and from the outer
side for outside bearings. This admits of the key being clenched or split or other-
wise secured at the outer side to prevent its working back, without fear of catching
against the bearing or pedestal.
The arrangement illustrated in Fig. 3 differs only in the use of two pins with
corresponding holes in lieu of one. Although the drawings illustrate the invention
as applied to flanged wheels it will be evident pullies and other wheels or couplings
may be similarly fastened to shafts or axles.
As will be evident the pin or pins traversing the axle or shaft and entering the
nave or boss of the wheel or pulley will effectually prevent its leaving the axle or
shaft, whilst the pin or pins is or are in turn securely locked in place by the key.
To prevent the sidewise movement to which wheels are liable when secured with
a single key on a shaft or axle which they do not accurately fit, the hole through
the wheel boss or nave may be formed approximately oval or egg-shaped as shown
in transverse section in Fig. 4 or be provided with projections as shown in Fig. 5.
By either of these arrangements the shaft or axle instead of taking a bearing in

page_text: the boss or nave at a position directly opposite to the securing key, will take two
side bearings relatively to the key as shown and sidewise movement of the wheel
will be prevented. The hole through the boss or nave instead of being formed as
shown may be of other form provided a clearance be left between the axle and that
part of the boss or nave opposite the key.
Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed, I declare that what I claim is :-
1. The fastening of a wheel or pulley upon an axle or a shaft by the use of
a transverse pin or pins extending through the shaft and at one end into the nave
or boss of the wheel or pulley in conjunction with a key at the other end (or ends)
of said pin or pins serving to lock such pin or pins in place substantially in the
manner hereinabove described.
2. Adapting a nave or boss to be fastened to an axle or shaft in the manner
referred to in the preceding claim by forming such nave or boss with transverse
hole or holes contracted or reduced in diameter or closed at or near one end thereof
and with a keyway substantially' as described.
3. A nave or boss of the kind referred to in the preceding claim formed substan-
tially as shewn in and described with reference to Fig. 4 or to Fig. 5 for the
purpose set forth.