Improvements in Parts of Velocipedes.
Year: 1892

page_text: Date of Application, 7th Sept., 1892
Complete Specification Left, 7th June, 1893-Accepted, 22nd July, 1893
Improvements in Parts of Velocipedes.
I, ROBERT FREDERICK HALL, of The R. F. Hall Manufacturing Company
Limited, of Sampson Road North, Sparkbrook, in the City of Birmingham,
Manufacturer do hereby declare the nature of this invention to be as follows:-
My invention pertains to certain parts of velocipedes, to wit, the bearings, and
the bottom bracket chain-wheel, and my said invention has for one of its objects, a
dust-proof bearing, and has for its other object, a detachable bottom-bracket chain
wheel.
In carrying out the dust-proof bearing part of my invention, in connection with
a bottom bracket, I take an ordinary junction casting, and fitted within the interior
of the same is a rotating bearing sleeve, tube or long bush, having ball bearing
collars with annular half races, upon its outer circumference, alike unto what is
usually employed upon the spindle or crank axle, which, in my invention, is perfectly
plain.
The said bearing sleeve or supplementary bush is concentrically mounted, and
turns within the middles of adjustable and screwed end caps or end closures, which
have upon their inner presented faces, ball bearing half races, so that on the opposed
half races of end caps and spindle collars coming together, they constitute the full
adjustable ball races of the sleeve bearing, which rolls or turns upon the balls, on
the rotation of the spindle, which, as hereinafter described, is locked within, and
turns with the said sleeve bearing.
The end caps or screw closures are outside screwed, and take within inside
screwed ends of the barrel part of the bracket.
The chain wheel is made fast upon the spindle, whilst the said spindle, adjacent
to the back centre of the said wheel, has key shaped lugs or projections formed
upon it, which take into like shaped recesses formed within one end of the
supplementary bearing sleeve, whose inside bore is plain, whilst the sleeve itself, as
aforesaid, is mounted and rolls upon ball bearings.
This plain spindle takes, and is locked within the bearing sleeve, by the key
lugs of the one part, engaging within the sunken gaps in the end of the other.
Thus, by removing the spindle and chain wheel from the bracket, or from its
bearing, the said bearing remains intact, and the component parts or elements of
the same remain undisturbed.
By making the bearing of the spindles separate, or as a supplementary mounting,
the changing of a spindle, and the substitution of one with a different chain wheel
is casily accomplished, without disturbing any of the loose or interior parts, as is
now the case with bearings of the ordinary construction.
Dated this 6th day of September 1892.

page_text: COMPLETE SPECIFICATION.
Improvements in Parts of Velocipedes.
1 ROBERT FREDERICK HALL, of The R. F. Hall Manufacturing Company
Limited, of Sampson Road North, Sparkbrock, in the City of Birmingham,
Manufacturer, 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 pertains to certain parts of velocipedes, and relates first, to the
bearings of crank axle or bottom brackets, and secondly, to the chain wheel fittings
or mountings of the same.
My said invention has for one of its objects, a dust-proof bearing, and has for its
other object, an attachable and detachable bottom bracket chain-wheel.
In carrying out the dust-proof bearing part of my invention, in connection with
a bottom bracket, I take an ordinary barrel stamping or bracket, and I fit within
the interior of the same, a rotating bearing sleeve, tube or long bush, having.
ball bearing collars with annular half races, upon its outer circumference, alike
unto what is usually employed upon the spindle or crank axle and which said crank
axle, in my invention is perfectly plain.
This said bearing sleeve or supplementary bush is concentrically mounted, and
turns within the middles of adjustable and screwed end caps or end closures, which
have, upon their inner presented faces, ball bearing half races, so that on the
opposed half races of end caps and spindle collars coining together, they constitute
the full adjustable ball races of the sleeve bearing, which rolls or turns upon the
balls, on the rotation of the spindle, which, as bereinafter described, is locked
within, and turns with the said sleeve bearing.
The end caps or screw closures are outside screwed, and take within inside
screwed ends of the barrel part of the bracket.
The chain wheel is made fast upon the spindle, whilst the said spindle, adjacent to
the back centre of the said wheel, has key shaped lugs or projections formed upon
it, which take into like shaped recesses formed within one end of the supplementary
bearing sleeve, whose inside bore is plain, whilst the sleeve itself, as. aforesaid, is
mounted and rolls upon ball bearings.
This plain spindle takes, and is locked within the bearing sleeve, by a key lugi of
the one part engaging with a sunken gap in the end of the other.
Thus, by removing the spindle and chain wheel from the bracket, or from its
bearing, the said bearing remains intact, and the component parts or elements of the
same remain undisturbed.
By making the bearing of the spindle separate, or as a supplementary mounting,
the changing of a spindle, and the substitution of one with a different chain wheel,
is easily accomplished, without disturbing any of the loose or interior parts, as is
now the case with bearings of the ordinary construction.
Figure 1 of the accompanying drawing represents a safety, bicycle fitted or
provided with a crank axle bracket or bottom bracket constructed, arranged, fitted,
and the crank axle mounted, according to my invention.
Figure 2 represents partly in elevation, and partly in longitudinal section, the
said bracket, with its cognate parts fitted and mounted as aforesaid.
Figure 3 represents a transverse section upon the dotted lines A B Figure 2,
showing the key snug upon the axle bracket contiguous to the chain wheel
engaging with a like shaped gap in the supplementary bearing sleeve which carries
the ball race collars, whereby the chain wheel admits of being removed and the axle
withdrawn, leaving the bearing parts intact.
Figure 4 represents the bracket with the chain wheel and axle removed.

page_text: Figure 5 represents the crank axle, and chain wheel separately
Figure 6 represents a transverse vertical section upon the dotted lines CD,
Figure 2.
The same letters of reference indicate corresponding parts in the several figures
of the drawing.
a is a junction or bottom bracket, consisting of a barrel stamping, carrying the
frame members a', a³, a³, and fitted within the open ends at, of the said bracket are
adjustable end caps or closures 6, outside screwed, and taking within. inside,wormed
parts of the said ends.
These end caps or closures have upon their inner or inside presented faces, ball
bearing half races *, and are secured in their adjusted positions by cross cottars c,
having cut-away parts c², drawn home by nuts c³, upon one of their ends, so that
after the said end caps have been adjusted, the drawing home of the cottars
permanently affixes or makes fast the same within the ends.
Fitted and mounted axially within the middle of the said bracket, and with the
ends of the same taking through central holes or openings b', in the said caps, is a
supplementary and rotating axle sleeve d, plain upon its interior d², and having
upon its exterior d³, end collars d', with forwardly disposed half ball races d³, and
with one of the ends or terminals de, provided with a gap or opening ', wherein a
key snug or stud e, takes, and locks the axle e, to the said supplementary sleeve d,
when the said axle has been inserted through it.
Made fast upon one end of the said axle, and contiguous to the key stud e³, is a
chain wheel, and made within the opposite ends respectively of it, are key ways e³,
for the affixing of the heads of the cranks g, to the said ends, by cross pins or
cottars g².
Interposed between the ball races or the half ball races d³, ³, of the parts d and b,
are anti-friction balls h, upon which balls, the supplementary sleeve and crank axle
carried by it, are mounted and revolve, so that by fitting the spindle within a carrier
sleeve or supplementary mounting, the removal of the spindle proper and its chain
wheel, and the replacing of it by a different one, is expeditiously and easily
accomplished, without disturbing any of the loose and component parts constituting
the actual bearings of the bracket.
Figure 7 shows a modification of the sleeve-securing means. In this form the
sleeve is locked by a snug on one of the cranks engaging with a gap in one end
of the bearing sleeve.
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 :-
First. In crank-axle bracket bearings, fitting the crank axle, which carries the
chain wheel, within a revolving ball-bearing carrying sleeve, (or bushes) disposed
axially within the bracket, and with the said axle and sleeve locked together, when
the one is within the other, substantially as described and set forth.
Secondly. In crank-axle bracket bearings having supplementary carrying
sleeves, locking the crank axle to the ball-bearing carrying sleeve by a key-stud,
snug or projection of the one part, taking within a gap, slot or opening in the
other part, substantially as described and set forth.
Thirdly. In crank-axle bracket bearings having supplementary carrying_sleeves
or bushes, employing or fitting within the open ends, adjustable caps or closures,
with ball races or part races located upon their inner parts, substantially as described
and set forth.
Fourthly. In crank-axle or bottom brackets, the combination with the barrel
casing of the same, of a ball-mounted spindle-carrying sleeve, surrounded at its
ends by closure caps having inside ball bearing races presented to the ball bearing
races of the sleeves, substantially as described and set forth.
Sixthly. In crank-axle bracket bearings or dust-proof bottom bearings, the

page_text: general construction, arrangement, combination and fitting of the parts sub-
stantially as described and set forth.
Dated this 6th day of June 1893
ROBERT FREDERICK HALL,
By Henry Skerrett,
6, Livery Street, Birmingham, Agent for Applicant.
ROBERT FREDERICK HALL,
By Henry Skerrett,
6, Livery Street, Birmingham, Agent for Applicant.