Year: 1898

page_text: Date of Application, 8th Feb., 1898-Accepted 2nd Apr., 1898
Figure 1 of the drawings represents a construction and arrangement of parts in
accordance with the invention, the view being a rear elevation partly in section, as
indicated by line 1-1 in the next figure.
Figure 2 represents a side elevation partly in section, as indicated by line 2-2 in
the former figure.
Figure 3 represents a construction and arrangement of parts embodying a
modification of the handle-bar illustrated in the first figure.
Referring to Figures 1 and 2 of the drawings A represents a portion of a bicycle
handle-bar shaped from a section of metal tubing, as is usual in the art. Brazed
or otherwise rigidly secured to the middle portion of the bar is a sleeve B having a
diametrically enlarged end thereof longitudinally corrugated upon its exterior, the
other end of this sleeve being provided with an external screw-thread. It is
preferable to have the corrugations on a bevel, and to obtain this result said sleeve
may have its corrugated portion gradually thickened in an outward direction, as
clearly shown in Fig. 1.
The sleeve B engages a tubular head C, and this head is provided with a
depending shank D for connection with the steering-fork shank of a bicycle. One
end of the tubular head C is interiorly shaped to match the corrugated portion of
sleeve B, and a nut E engages a screw-thread cut on said sleeve at the end of the
same furthest from the corrugations, the nut being run on the aforesaid sleevo
against said tubular head engaged therewith. As a matter of detail, the opposing
surfaces of the nut and head are preferably beveled.
The nut E being run off the sleeve B, the handle-bar rigid with this sleeve may
be moved in a direction to bring its corrugated portion out of engagement with the
corrugations of the tubular bead C, after which said handle-bar may be rotarily
adjusted to change elevation of its ends or grips. The corrugated portion of the
sleeve B being again engaged with the corrugations of head C, and nut E run onto
said sleeve against said head the handle-bar will be locked in its adjusted position.
By having the corrugations of sleeve B and head C beveled, a wedging-fit of the
two is had when the nut E is tightened, and the opposing surfaces of said head and
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page_text: the nut D being beveled they also have a wedging-fit, the wedging of said sleeve
and nut with said head making the handle-bar, as a whole, absolutely secure in its
adjusted position.
The nut D is preferably round and may be milled on its periphery to facilitate its
operation by hand, and said nut is shown provided with recesses b for the engage-
ment of a spanner-wrench or other convenient tool employed to adjust said nut on
the sleeve B aforesaid.
Whether the corrugations of sleeve B and head C be straight or beveled, the
ridges of the sleeve-corrugations fitting the depressions of the head-corrugations
will have their inner ends stopped by the non-corrugated portion of said hoad to
thus limit longitudinal movement of handle-bar A in one direction, the nut D
operating to prevent like movement in the opposite direction.
In Figure 3, the handle-bar is shown as comprising two sections A A' of metal
tubing. The section A is expanded at its inner end and the corresponding end of
section A¹ is contracted, the two being lap-joined and brazed together. The
contraction of section A¹ fits the normal bore of section A and the expansion of the
latter section is for the most part in fit upon the greatest diameter of the former
section. As shown the inner expanded extremity of the handle-bar section A may
be made flaring and longitudinally corrugated, the corrugations being tapered, and
it is preferable to also provide this flared and corrugated extremity of said handle-
bar section with an inturned flange c that impinges against the other handle-bar
section A¹ to constitute a brace and improve the finish of the joint. The flared and
corrugated central portion of the two-section handle-bar has match-fit with the
head C that is provided with a depending shank D for engagement with a steering-
fork shank of a bicycle, and the expanded portion of handle-bar section A
provided with a screw-thread for the engagement of nut E that is run there.
against the end of said head furthest from its corrugations. Like as aforesaid, t
nut E comes snug against the head and the opposing surfaces of said nut a:
head are preferably beveled for the purpose above specified.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed I declare that what I
claim, is :-
1. A bicycle handle-bar having its central portion provided with longitudinal
corrugations and a screw-thread, a tubular supporting-head having match-fit on
the corrugated portion of the handle-bar, and a nut run on said screw-thread to
bind against the end of the supporting-head furthest from the corrugations of the
joint.
2. A bicycle handle-bar having its central portion provided with longitudinal
corrugations and a screw-thread, a tubular supporting-head having match-fit on the
corrugated portion of the handle-bar, and a bevel-end nut run on said screw-thread
against a corresponding bevel at the end of the supporting head furthest from the
corrugations of the joint.
3. A bicycle handle-bar having its central portion provided with longitudinal
beveled corrugations and a screw-thread, a tubular supporting head having match-
fit on the corrugated portion of the handle-bar, and a nut run on said screw-thread
against the end of the supporting-head furthest from the corrugations of the joint.
4. A bicycle handle-bar having its central portion provided with longitudinally
beveled corrugations and a screw-thread, a tubular supporting head having match-
fit on the corrugated portion of the handle-bar and a bevel-end nut run on said
screw-thread against a corresponding bevel at the end of the supporting head
furthest from the corrugations of the joint.