Improvements in Detachable Ball Bearings for Cycles, Motor Cycles, or other Vehicles.
Year: 1897

page_text: Date of Application, 8th May, 1897
Complete Specification Left, 4th Nov., 1897--Accepted, 4th Dec., 1897
PROVISIONAL SPECIFICATION.
Improvements in Detachable Ball Bearings for Cycles, Motor Cycles,
or other Vehicles.
WILLIAM EDWARD HART Junior, Avondale Villas, Allen Road Wolverhampton,
Cycle Engineer; WILLIAM EDWARD HART Senior, 38 Darlington Street Wolver-
hampton, Cycle Manufacturer (Trading as the Hart Cycle Co.) do hereby declaro
the nature of this invention to be as follows:-
An improved ball bearing cup, concave cone, or disc, of which the outer cir-
cumference is divided by ledges of various measurements, thus providing the said
cup, concave cone, or disc, with three diameters; The largest diameter or princi-
pal ledge which surrounds the cupped part of the disc, is screw-cut in order that
it may screw into a socket such as the barrel of a Hub, Pedal, or Bottom-Bracket
of a Cycle; The medium diameter or secondary ledge is a provision in order that
the largest diameter or principal ledge may be screwed past its entire width into
the prepared socket aforesaid. The said secondary ledge is also screw-cut to
allow a lock-nut to be screwed on same; The said lock-nut is screwed against
the edge or side of the socket aforesaid, & the secondary ledge accomodates the
said lock-nut to be employed, so that the circumference of the said lock-nut may
be within the radius of the edge or side of the socket aforesaid. The smallest
diameter or inferior ledge is not screw-cut, but may have its circumference shaped
to fit a spanner for the purpose of screwing the complete disc into the socket
aforesaid of a Hub, Pedal, or Bottom-Bracket of a Cycle or other kind of Vehicle.
Tail this Candl JL... 1907
Improvements in Detachable Ball Bearings for Cycles, Motor Cycles,
or other Vehicles.
WILLIAM EDWARD HART Junior, Avondale Villas, Allen Road Wolverhampton
Cycle Engineer; WILLIAM EDWARD HART Senior, 38 Darlington Street Wolver-
hampton, Cycle Manufacturer (Trading as the Hart Cycle Co.) 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:-
1st This improved ball bearing cup, concave cone, or dise, (hereafter called
disc) has its external portion divided by three ledges or circumferences, & there-
fore sectionally measured it has three diameters.

page_text: 2nd; The largest diameter or principal ledge (A) which surrounds the cupped
part of the disc is screw-cut, in order that it may screw into a socket such as the
barrel of a Hub, Pedal, or Bottom-Bracket of a Cycle.
;
3rd The medium diameter or secondary ledge (B) is a provision in order
that the largest diameter or principal ledge (A) may be screwed past its entire
width into the prepared socket aforesaid.
4th; The said secondary ledge (B) is also screw-cut to allow a lock-nut (D)
to be screwed on same.
5th; The said lock-nut (D) is screwed against the edge or side (E) of the
socket aforesaid, & the secondary ledge (B) accommodates the said lock-nut (D)
to be employed so that the circumference of the said lock-nut may be within the
radius (sectionally speaking) of the edge or side (E) of the socket aforesaid.
6th; The smallest diameter or inferior ledge (C) is not screw-cut, but may
have its circumference shaped to fit a spauner for the purpose of screwing the
complete disc into the socket aforesaid of a Hub, Pedal, or Bottom-Bracket of a
Cycle or other kind of Vehicle.
7th; The internal portion of the disc immediately beneath or within the largest
diameter or principal ledge (A) is cupped out in order to accommodate the neces
sary balls in the usual manner, whilst the internal portion of the disc immediately
beneath or within the medium diameter & the smallest diameter, i.c., the secondary
ledge (B) & the inferior ledge (C), is drilled out parallel in order to accommodate
the usual ball bearing axle to pass through same without touching.
8th The principal ledge (A) is screw-cut with a greater number of threads
than what are screw-cut on the secondary ledge (B) in order that when the lock-
nut (D) is being screwed upon the latter, the former will be-if at all-but
inappreciably moved within the socket in which it is screwed.
-
9th The principal ledge (A) is screw-cut with right hand threads, whilst the
secondary ledge (B) is provided with left hand threads.
Having now particularly described & ascertained the nature of our said inven-
tion, & in what manner the same is to be performed, we declare that what we
claim is;-
1st. The principle of having three external circumferences or ledges to the
disc.
2nd. The principle of having the medium or secondary ledge (1) as a provision
in order that the largest diameter or principal ledge (A) may be screwed past
its entire width into the prepared socket of a Hub, Pedal, or Bottom-Bracket of a
Cycle, Motor-Cycle, or other Vehicle, & by so doing allow of an independent
adjustment space between the side of the principal ledge (A) & the lock-nut (D)
which is screwed upon the secondary ledge (B) & fixed up against the edge or
side (E) of the socket aforesaid, & also allow full accommodation to the said lock-
Nut (D) (Which is of ordinary size & strength) in order that its external circum-
ference may
be within or not exceed the normal circumference of
unstrengthened or unbeaded edge or side (E) of the aforesaid Socket.
3rd. The principle of having the principal ledge of this movable & adjustable
disc provided with a greater number of threads than what are provided in a
different direction on the secondary ledge.
4th. The principle of the particular combination for the purpose described.
Dated this Second day of November 1897.
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