Improvements in Velocipedes.
Year: 1890

page_text: Date of Application, 16th Oct., 1890–Accepted, 22nd Nov., 1897
COMPLETE SPECIFICATION.
Improvements in Velocipedes.
We HENRY GARDNER BARR, Mechanical Engineer of Westborough in the
County of Worcester and FRANK ELLIOTT PECK, Manufacturer of East Wareham
in the County of Plymouth both in the State of Massachusetts, United States of
America 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:
This invention relates to improvements in velocipedes of the kind termed multiple
geared, and is carried out as follows reference being had to the accompanying
drawings, where,
Fig. 1 represents an end elevation of our improved driving wheel hub showing a
portion of the forked frame and one of the cranks.
Fig. 2 represents a central longitudinal section of said improved driving wheel hub.
Fig. 3 represents a detail side view of the axle as seen from the end of one of its
cross trunnions.
+
Fig. represents a detail plan view of one of the cone nuts screwed on the cross
trunnions of the axle.
Fig. 5 represents a detail view of one of the lock nuts used on said cross trunnions,
and
Fig. 6 represents a detail plan view of the washer interpose between said cone
and lock nuts.
Fig. 7 represents a side elevation of a front driver velocipede provided with our
improvements,
Fig. 8 represents a side elevation of a rear driver velocipede provided with our
improvements and
Fig. 9 represents a side elevation of a front and rear driver velocipede, also
provided with our improvements.
Similar letters refer to similar parts wherever they occur on the different parts of
the drawings.
A represents tlie axle to the ends of which are secured as usual the cranks B B'
provided with pivoted treadles bb.
The said axle is made in the form of a cross having milway upon it diametrically
opposed trunnions A' A' having each an enlarged base or rest A" at the junction
with the axle A which bases serve as supports for the cups or ball cases CC which
are firmly secured to the trunnions A' A' as shown in Fig. 2.
Within the cups or ball cases CC are located a series of balls cc and on each
short arm or trunnion A' is loosely located an intermediate bevel gear having on its
under side a cone 1) adapted to roll against the balls ce and by such arrangement a
three point contact antifrictional bearing is established between the ball case or cup C,
and the gear cone D' as shown in Fig. 2 one of such contacts being made between the
balls c and the gear cone D' and the two others between said balls and the bottom
and inside of the ball cup or case C. Each short cross arm or trunnion A' has a
screw threaded portion A³ in its outer end as shown in Fig. 2.
Each intermediate gear D has in its outer end an annular cup or ball case D" in
which are located the antifriction balls d d.
E is a cone nut screwed onto each of the screw threaded ends A³ of the cross
arms of the axle by which a three point contact antifriction bearing is established
between the gears D D and their adju-table cone nuts E E as shown in Fig. 2 one
of such contacts being established between the balls d and the underside of the cone
ut E, and the others between the said balls and the bottom and inside of the cup or
ball case D on the gear D. On top of each cone nut E is located a washer e which
CU

page_text: is prevented from turning around its corresponding screw threaded trunnion part A³
preferably by having an internal lip e¹ adapted to enter a longitudinal groove a¹ on
the side of the screw threaded portion A³ as shown in Figs. 3 and 6.
On top of each such washer is located the lock nut F shown in Figs. 2 and 5 by
means of which the cone nut D" is locked in position after being properly adjusted
from time to time to compensate for wear. By the use of a non rotating washer e
interposed between the cone and lock nuts as above described, the latter may be
tightened without turning or disturbing the position of the cone nut.
G is the hub shell of the wheel rim H to which it is attached by means of wires h
as usual. To one end of the shell G is firmly fixed an end piece or disc I which is
preferably forced into the end of the hub shelf and secured by a key or feather, so as
to become practically a part of said hub shell as shown in Fig. 2. The end piece I
has an inwardly projecting hollow hub surrounding loosely the shaft. A, and to
such hollow hub 1 is firmly secured in a suitable manner a bevel gear the teeth of
which mesh into the teeth of the intermediate gears D D as shown in Fig. 2.
The gear thus becomes practically a part of the hub shell G. On the outside
of the end piece I is an annular recess 13 in which are contained a series of anti-
friction balls adapted to roll against a conical projection K' which forms a part of
the ball case K, which latter is secured to the lower end of one side of the forked
frame L as shown in Figs. 2. 7. 8 and 9. By this arrangement a three point contact
antifriction device is established between the end piece and the inner end of the
ball case K one of such contacts being established between the conical projection K
and the anti-friction balls, and the other two between said balls, and the bottom and
side of the cup shaped recess 13 as shown in Fig. 2.
The ball case K has in its outer end, an annular cup shaped recess K" in which
are contained a series of antifriction balls kk shown in Fig. 2. a is a screw threaded
portion of the axle A inside of the place where one of the cranks B is secured and
on such screw threaded portion is screwed a cone nut the conical portion of which
serves as a bearing surface for the balls kk and by this arrangement a three point
contact antifrictional device is established between the ball case K and the adjustable
cone nut one of such contacts being established between the balls kk and the
conical surface of the cone nut ', and the other two between said balls and the
bottom and side of the annular recess K" in the ball case K as shown, for the purpose
of securing the cone nut in place upon the axle A after being adjusted in position
thereon we provide its outer face with a series of perforations adapted to
receive the end of a locking plate secured to the crank B by means of a screw
or equivalent device.
The opposite end of the hub shell G is provided with an internal screw thread
into which is adjustably secured the screw threaded soft metal end piece M, to the
central part of which is preferably attached the annular 'dise M' as shown in Fig. 2.
The piece is preferably shrunk while heated on the outer dise M which is
hardened for the purpose of making such centre piece hardened and of standard size
and enabling the outer soft metal end piece M to be afterwards screw threaded and
fitt d to the internal screw thread g of the wheel hub G.
The parts M May however be made in one single piece but it is more
advantageous to make them in two parts secured together as above specified.
The disc has in its outer end an annular recess M" adapted to contain the anti-
friction balls m m as shown in Fig. 2.
N is the ball case secured to one of the lower ends of the forked frame 1, which
ball case has made in one piece with it, an inwardly projecting sleeve N to which is
firmly secured in a suitable manner a bevel gear O the teeth of which mesh in the
teeth of the intermediate gears D D as shown in Fig. 2. The sleeve N is also
provided with a cone bearing surface N by which, and the annular recess M" a three
point contact anti-friction bearing device is obtained, one of such bearing contacts
being established between the balls mm and the bearing surface N" and the other two
between said, balls and the bottom and side of the annular recess M in the centre
disc Mas shown in Fig. 2.

page_text: The ball case N has in its outer end, an annular recess N adapted to contain a
series of antifriction balls n n as shown in Fig. 2.
On a screw threaded portion a" of the axle A is adjustably screwed the cone nut P
which serves as a bearing surface for the balls n n and by this arrangement a three.
point contact is established between the ball case N the cone nut P and the balls n n
one of such contacts being established between the cone nut P and the balls n n and
the other two between said balls and the bottom and side of the annular recess N³ as
shown in Fig. 2.
The cone nut P has on its outer face a series of recesses p p into either one of
which is secured the inner end of a locking plate p' adjustably secured to the crank B¹
by means of a set screw pl or equivalent device.
By the construction of the wheel hub and its component parts as above described
great antifriction results are obtained and the wheel can be driven with a minimum of
frictional resistance. It will of course be readily understood that when the axie A is
rotated it causes an increased rotary motion to be imparted to the hub G and its
wheel in the same direction as is common in multiple geared velocipedes.
By having the end piece M detachably secured to the wheel hub G the internal
gear mechanisin may be removed from within the said hub at any time desired,
simply by detaching the crank B. and cone nut k from the end of the axle A if then
the end piece M is detached from the wheel hub G the axle and the gears D. D. O
may be drawn out of the hub shell thus enabling any desired adjustment or repairs of
such parts to the made.
In adjusting the gears and ball bearings, the adjustable hub end M M is screwed.
in out of the way and the axle cone nuts screwed up until the gears mesh properly
after which the said cone nuts are locked in place by the projections p¹³ on the
cranks as hereinbefore mentioned. The adjustable hub end M M is then unscrewed
until the hub is made to fit properly on the ball cases and their antifriction balls
after which the said adjustable hub end is secured in place to the wheel hub G by.
means of a toothed locking piece G³ secured preferably by means of a screw or other
equivalent device to the wheel hub and having its teeth interlocking in a toothed
surface M as shown in Fig. 1.
The hall cases KN have each two or more tenons T T having squared ends, and
intervening square bottom spaces adapted to fit in corresponding square ended
spaces and tenons L', 1, in the end of the forked frame Land are secured together
by means of a bolt L the object of this form of joint is to hold the ball cases
strictly in line with the axle and to keep them in truth while operating the wheel.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is.
1. In a velocipede an axle having cross trunnions and central enlargements.
annular ball cases supported on the latter, and an anti-friction bearing gear arranged
upon each trunnion, combined with a cone nut, a non rotating washer and a lock nut
arranged upon the outer screw threaded end of each of the said trunnions
substantially as and for the purpose set forth.
2. In a velocipede an axle having cross trunnions, ball cases arranged on the
latter and containing a series of antifriction balls combined with a gear loosely
mounted on each of said trunnions and having a cone on its underside adapted to
roll on said balls, a recess on the outer end of said gear containing a series of anti-
friction balls and an adjustable cone nut, non rotating washer and lock nut arranged
on the outer screw threaded ends of said trunnions substantially as specified.
3. In a velocipede an axle having cross trunnions, ball cases rigidly secured
thereto, a bevel gear loosely mounted on each trunnion and, an adjustable cone nut
having locking device as described, combined with three point contact ball bearing
device on the upper and underside of said gears substantially as and for the purpose
set forth.
4. In a velocipede an axle having cross trunnions and antifriction gears arranged

page_text: upon the latter within an enclosing hollow wheel hub combined with a fixed and an
adjustable detachable end, and three point contact, antifriction ball bearings between
said fixed and removable ends and the forked frame, substantially as and for the
purpose set forth.
5. In a velocipede a hollow wheel hub having fixed and adjustable hub ends, anti-
frictionally journalled on stationary ball cases having each two or more square
tenons adapted to fit in and between corresponding square recesses in the forked
frame and a fastening bolt for securing each ball case to said forked frame substantially
as specified.
6. In a velocipedo a hollow wheel hub and an adjustable end,,the latter having a
toothed circumference combined with a locking device secured to the hollow wheel
hub and adapted to mesh in the said toothed circumference substantially as and for
the purpose set forth.
7. In a velocipede an axle having cranks secured to its ends and having a hollow
wheel hub antifrictionally journalled on hall cases attached to the forked frame of
the machine combined with adjustable cone nuts screwed on the said axle near its
ends said cone nuts having end perforations adapted to receive locking pins attached
to the cranks substantially as and for the purpose set forth.
8. In a velocipede an axle having cross trunnions, gears arranged on the same and
having three point contact antifriction bearing devices a hollow wheel hub having
fixed and adjustable ends journaled upon three point contact antifriction devices
combined with a pair of gears one held stationary on one of the ball cases and the
other secured to the wheel hub both having their teeth meshing in the gears upon the
cross trunnions substantially as described.
9. In a front driver velocipede a hollow wheel hub and cross shaft having cranks
attached to its ends combined with the gears three point contact antifriction
bearings adjusting and securing devices and attachment between the ball cases and
the forked frame substantially in the manner and for the purpose set forth.
10. In a rear driver velocipede a hollow wheel hub and cross shaft having cranks
attached to its ends combined with the gears, three point contact antifriction
bearings, adjusting and securing devices and attachment between the ball cases and
the forked frame substantially in a manner and for the purpose set forth.
11. In a front and rear driver velocipede a hollow wheel hub and cross shaft
having cranks attached to its ends combined with the gears, three point contact
antifriction bearings, adjusting and securing devices and attachment between the
ball cases and the forked frame substantially in a manner and for the purpose set
forth.
Dat his 10.
1000
HERBERT & Co.,
18, Buckingham Street, Strand, London, W.C., Agents to Applicants.