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Патент USA US2131863

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Oct. 4-, 1938.
Filed Dec. 50, 1936
Patented Oct. 4, 1938
, 2,131,853
, Andrew S. Wright, Spring?eld, Mass.
Claim. (01.
30, 1936,
Serial’ No. 118,218
This invention relates to improvements in ski
ing equipment and is directed more particularly
to the provision‘of, an improved ski-pole.
Ski-poles of usual form comprise a longitudinal
‘5" pole member having a more or less pointed lower
end part for piercing the snow and a ring mem
ber ‘spaced from but adjacent the lower end for
preventing the pole from digging too deep into the
‘ snow.
This invention is particularly concerned
10 with the construction, of this'ring member.
" It is one of the principal objects of ‘the inven
tion to provide a ski-pole of novel form which
iseasy and economical to manufacture and which
is at the ‘same time efficient in operation and
15. adapted’ to Withstand considerable abuse. The
construction is such that the pole is relatively
light‘in "weight, as is desirable, yet it is sturdy
and?strongb q
terial. What may be called a handle, in the
form of a strap 4, is shown suitably attached to
the upper part ofthe longitudinal member and
this commonly is formed of leather or some'other similar material.
5 lendsstrengthrand rigidity to the pole, while 10
the spike is for piercing the skiing surface.
InFig. 2 there is shown ‘a ring-forming mem
ber it] which consists of a rod-like length 8 of
some. bendable material, such as reed, bamboo,
or the like. The rod 8 is usually substantially l5
circular in cross section and it is bent so as to
bring its opposite end portions 9 into adjacency.
‘ ,It was. mentioned above that there were cer
As particular ‘features of this invention the
20 main body of the ring member is formed from
a single piece of strong yet bendable material
tain‘ characteristics commonly‘ found in‘these
which is bent into the form of a ring so as. to have
‘other bamboo-like material have many joints and
any given length thereof invariably has its oppo
opposite ends in adjacency and means is provided
to ?rmly and securely hold these ends together.‘
25 As will appear, this means includes a novel sleeve
member which is not only relatively inexpensive
but which adapts itself to ready assembling of
the parts.
It is usual to form these ring members from
‘30 lengths of some tough yetlight-weight material,
such as reed or some other bamboo-like material.
While such materials have many desirable ad
’ vantages and are, therefore, popularly used, they
have certain characteristics which cause manu
‘35 facturing difficulties and it is an object of this
invention to overcome these di?iculties.
Various other objects and advantages of the
invention will become more apparent after a
reading of the following description, reference be
40 mg had to the accompanying drawing wherein:
Fig. 1 is a side elevational view of alski-pole
Fig. 2 is a plan view of a ring-forming member
of the invention; ,
Fig. 3 is a plan view of a sleeve member of th
Fig. 4 is a plan view of the ring-forming parts
in assembled relation; and
‘ Fig. 5 is a partial plan view showing a modi?ed
‘ 50 form of ring member.
ring-forming members which presented manu- 20
facturing difficulties. That is to say, reeds or
site ends of different diameters.
, 1
Thus, it will be appreciated, when the rods 8 25
are bent into ring-forming position, the adjacent
ends thereof, being of diiferent diameters, do not
neatly come together and are only secured to-.
gether with difficulty. That is to say, one end
will sometimes be as much as twice as great in 30 7
diameter as the other‘end of the rod so that,
it is obvious, it is therefore not only difficultto
secure themv together at all but then only ‘with
loss of e?iciency.
According to my invention, I provide a sleeve 35
which, as will appear, may vary in form and
which is adapted to receive the adjacent end por
tions 9 of the rod 8. This sleeve, represented by
12in Fig. 3 is adapted to ?t around the end
portions of the rod regardless of their diameters 40
and to hold them in adjacency. The end portions
9 may be in abutting or overlapping relation or
embodying the features of the invention;
It is usual to provide a metallic sleeve 5 around
the lower end portion of the longitudinal mem
ber 2 and then to this may be secured in some
Way a pointed spike‘part 6, as shown. The sleeve
' Referring now to the drawing more in detail,
the invention will be fully described.
In Fig. 1 there is shown a longitudinal member
2 which commonly consists of a bamboo rod or '
55 some other relatively rigid‘but light-weight ma
may be mitred.
According to the preferred form of the in
vention, the sleeve l2 takes the form of a tubular 45
member formed of some cellulose plastic mate
rial, such as cellulose acetate. This material is
not only relatively inexpensive and may be easily
' obtained in tubes of various sizes so as to accom
modate the varying diameters of the rods, but 50
it has the further very de?nite advantage that
it may be caused to shrink and snugly embrace
an object.
The sleeve receives the end portion 9 which
may be in abutting end relation and is softened 55
_ 2,131,863
in some suitable way so that on hardening it
shrinks tightly about and snugly embraces the
end portions of the member 8 so as to securely
hold the said ends together providing a sub
stantially unitary ring structure.
It will be appreciated that while the sleeve l2
may be originally substantially the same diameter
throughout its length, it is of such a nature that
after softening it shrinks to conform to and snug
10 ly embrace the varying diameters of the end por
tions 9.
The sleeve tightly grips the said end
portions so as to ?rmly hold the rod in ring
forming relation. The sleeve l2 has the further
vided to hold the ring in place, and this means
is of usual form and does not comprise any part
advantage of being relatively thin so as not to
of this invention.
15 produce any objectionable projections or bulging
on the ring.
The sleeve may be softened before or after as?
sembling with the ring member and this may be
done in various ways. For instance, the material
20 is of such a nature that it shrinks when sub
jected to warm water or the like.
If desired, further means may be provided for
securing the sleeve I2 to the ring-forming mem
ber. Such means may take the form of tacks or
25 nails M which extend through the sleeve l2
and into the end portions 9.
According to a modi?ed form of the invention,
the sleeve may be formed of some other rela
tively thin material in tube form, such as a rel
30 atively light-weight metal. This sleeve, indi
cated by I2’, may receive the adjoining end por
tions of the ring-forming member 8 in the same
way as the sleeve 12.
like Hi’ may be provided to more ?rmly secure
the sleeve to the ring-forming member.
Here again the sleeve is relatively thin, light
weight and inexpensive and does not produce any
objectionable projections on the ring, but instead
conforms to the diameters of the opposite end
portions of the ring.
It is desired to point out that the ring I0 is
arranged concentrically of the rod 2 adjacent
the lower end thereof. Fastening means, pref 10
erably in the form of ?exible straps [6, are pro
The sleeve l2’, being relatively thin and more
or less collapsible, may have its‘ opposite end
portions crimped in some way, as indicated at
I5, so as to grip the end portions of the rod
Then, if desired, nails, tacks, or the
While I have described
detail and with respect
thereof, it is not desired
since many changes and
the invention in great 15
to a preferred form
to be limited thereto
modi?cations may be
made therein without departing from the spirit
and scope of the invention. What it is desired 20
to claim and secure by Letters Patent of the
United States is:
As a new article of manufacture, a ski-pole of
the class described comprising in combination, a
longitudinally-extending rod member, a ring 25
member secured thereto concentrically thereof
adjacent one end thereof, said ring member con
sisting of a single length of bamboo material hav
ing opposite ends of unequal outside diameters
and bent so that said ends are in abutting rela
tion, and a sleeve member extending around the
opposite end portions of said length of bamboo
material, said sleeve member consisting of a cel
lulose plastic tube which is normally of uniform
diameter throughout its length shrunk about 35
said end portions by application of a solvent of
the plastic material so as to conform to the
outside diameters thereof.
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