provements in and relating to Velocipedes
Year: 1895

page_text: Date of Application, 3rd May 1895-Accepted, 8th June, 1895
COMPLETE SPECIFICATION
Improvements in and relating to Velocipedes
I, ROBERT EDWARD PHILIPS Assoc M Inst, CE, M Inst Mech E
of 70, Chancery Lane, in the Parish of St Andrew Holborn, in the County of
Middlesex, Consulting Engineer and Registered Patent Agent, do hereby
declare the nature of this invention (which has been communicated to me
by The Overman Wheel Company of Chicopee Falls, in the County of Hampden
and State of Massachusetts USA) and in what manner the same IS to be
performed to be particularly described and ascertained in and by the following
statement
1
This invention relates to an improved device for attaching cranks to crank axles,
and it consists essentially in forming on the end of the axle a pair of ears or lugs
through which are formed tapered holes to receive the crank one end of which
18 tapered to fit in the said holes, and of a nut adapted to fit in between the
said ears or lugs and to be screwed on the tapered end of the crank, part of
which is threaded to receive it, the object being to obtain a rigid but neat con-
nection between the parts which require the application of but a small amount of
power to effect
This invention is particularly adapted for use with the crank axle described and
claimed in my ptor Patent No 13,505 of 1894, but it is also applicable to all other
types of axles, and the device may also be used for attaching other parts of
velocipedes together, such for instance as the pedal pin to the crank
In the accompanying drawing which illustrates my invention
Figure 1 is a broken view in end elevation of a cıank and axle embodying my
invention
Figure 2 is a broken view in transverse section through the crank, and
Figure 3 1 1 view in longitudinal section through the axle
Thioughout the views sin ilar parts are marked with like letters of reference
On each end of the axle A are formed or fixed two ears or lugs a, a', through
which are formed tapered holes, the taper of the hole through the ears or lugs
on one end of the axle being diametrically opposite to the taper of the holes
through the ears or lugs on the other end of the axle so that the cranks are
mounted in line with each other I he cranks B which are preferably round have
then ends tapered to fit in the tapered holes in the ears or lugs on the ends of the
axle, the tapered end being formed in two parts 6 and 61 with a parallel part
between them on which a sciew thread 62 is cut, the said threaded pait 62 coming
between the ears or lug a and a' when the crank is in place, and being adapted to
receive a nut C which fits between the two ears or lugs a and a¹
preferably circula in form and is preferably provided with radial holes as shown
by the drawing to enable it to be operated by a pin wrench, but it may be made
hexagonal or of any other shape to be operated by a jaw spanner if desired
I his nut is
To prevent the ciank B from turning in the holes in the ears or lugs a and a¹
small keys 3 and 4 are provided on the tapered parts b and 6 of the crank, the
said keys being adapted to engage with keyways in the lugs a and a¹ as
shown
To provide for the drawing up of the crank, a small recess a² is preferably
provided on the tapered hole in the lug a as shown
As a modification the tapered part 6 of the crank B may be made of a square
or other flat-sided section and thus dispense with the keys and keyways

page_text: By this device a very firm and rigid connection is made between the cranks and
the axle without the use of extreme force
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same 18 to be performed I declare that what I
claim is
-
(1) The improvements in velocipedes, substantially as set forth
(2) In a velocipede, the combination with the pedal-crank axle, of ears or lugs
such as a and a' on each end thereof, of cranks having tapered ends adapted to fit
in tapered holes in the said ears or lugs, and of nuts adapted to fit between the said
ears or lugs and to screw on to the tapered ends of the cranks to diaw them up
tight or to release them, as set forth
(3) The combination of parts herembefore described and illustrated by the
accompanying diawing forming my improved device for connecting pedal cranks to
their axles
cu this ru uay of May 1070
ROBERT E PHILLIPS, Assoc M Inst CE, M Inst ME
ROBERT E PHILLIPS, Assoc M Inst CE, M Inst ME