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Патент USA US2120806

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June 14, 1938.
’
2,120,806
A. W. KEUFFEI..
METHOD FOR MAKING POINTS FOR THE ENDS OFßODs AND THE LIKE
Filed May 25, 1934
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INVENTOR
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ADoLF w. KEUFFEL
BY CQ ,
8,1M
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ATTORN EY
Patented June 14, 193s
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2,120,806
UNITED STATES PATENT oer-‘Ice
METHOD FÜR”y MAKING POINTS FOR THE>
ENDS vOF RODS AND THE LÍKE
Adolf W. Keufïel, Montclair, N. J., assigner to
Keuffel & Esser Company, Hoboken, N. J., s.
corporation ol’ New IJersey
Application May 23, '1934, Serial No. 727,051
f 6 Claims.
(Cl. 29-148.2)
This invention relates to c. method for making into a. cylindrical portion 9 with a. frusto conical
points for the ends of rods suon as surveyor’s end Hl... The opposite end Il ls of reduced di
ranging` poles and the like, Jecolo’s otoñs, the legs /ameter to form e, shoulder lll, which is relieved
of tripods and similar articles reoulrlne; sharp on the inside
otubuler bore lll. >¿l sleeve or
5
and herd points.
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tube lll of o softer steel receives the end ll of g
Heretoiîore, polnts for ranging poles, lor lnstance, have been made by forming o steel tube
the shoe tl and extends to shoulder l2. For con
venience in handling, particularly during menu
portlon et the lower end of the pole :luto o te.-
lecture, the tube is secured to the shoe, es l‘oy snot
Bering shore which ls thus burdened.
`
10
The present invention seelrs to prelude c, enero
end for articles or the clrcrocter deserto-ed ln
which eV thinner walled tulouler portion may be'
welding et o few points although, obviously, the
ports’ may ‘ce assembled with o drive llt or, lí E@
necessary, een be held together with e, rivet or
two.
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used without sucrltlce of strength; ln velden the
The point is theo formed und assumes 'the
point moy be readily formed end ls console oí’ shape lllustroted ln Figures 2 und 3 preferably
15 being hardened by o simple swsglug onerotlon „ byoswoging operation in which the shoe will od- 15
forming“ the point to the desired shone end just itself ley reason of the hollow `ocre lll and
which permits the use ol e. pollué; et u. herder will ‘oe elongated into the desired tapered point
materiel, when desired.
when subjected to the hammer blows of the swee
Anotloer object of the lnventlon ls to orovlde lng machine. The tapering; shone commences 2o on ellsteel pole 'which shell lle no heerler than preferably e, short distance below the upper end @o
e Wooden pole. r’lccordlnelïf, »o tuloulcr pole ls of the tubular shoe port ill so that tlre upper end
provided which is corrugated whereby e thinner
of the tubular shoe port lil ls cylindrical witlo
vvolleel tube roer be treed llovlogg the requisite in the telescopios“ tubular portion lll und su
strength.,
25
n
even stronger section lseüorded et tlle‘petrt Where
lt is oleo en olojîect of tlre lnventloo to provide
lor the eí-l'ectlve securing el the point
the
' tubular portion et the lower end or the pole.
tlo‘is end, the tulouletr end ot" e, Loolnt member or
shoe ls telescoped within the tulouletr portion und
3
3 Ul
the oveï'lourine parts are then Shared to o ‘teuer
and are theïeby Íïlteî‘loßked ÈÉ'EIÍHSÍ; SßpfsllÍ'Ü-JAÚÍQÜÃ.
es shown ln lll-ligure Il. Since the tulculor shoe
portion tl ñsres outwardly ln on upwardly dlrec~
tion with the end of tlle tubular portion ld or ll”
constructed tnereebout, the two ports cre lnter» so
locked and Sepgurg’tìûn pyßvenßedu ’
These and other Qbje‘fts Off-th@ ìm’emmn mld
operation effectively shapes the telescopio@ parte
the Ineens for their attsmrneut will ‘oe morel c_oparent from the following detailed descrlptlon,
¿30 ¿même form even when a corrugated mbe is
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ä'ëâäñènmîëäìîîìimgnîläâmïî‘ëìîìûäïùâäìîìî
the invention muy liäe realized
ln which' "
.Bv this method of manufacture, e very superior 35
hard mint mw be mme by using a“ high carbon
Fi urel lsuvie
40
the taper begins theo where the shoe port ll «g5
terminates exactly et the beginning 0l? ‘the M1331?,
,l
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“
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elsectl melo
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steel for the shoe piece whicla, after being es~
.
„
.
„
ing ghe Shoe andwtuëeoäìêägëd ñbefoìe SWÈZ_
sembled wlth the tune and placed 1n the nesting
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ing operation forming the point therefrom;
oven,
will
become hardened, es_ is the clleu‘eoter- Ã
_
A _:
Figure 2 is a View, also m longitudmm Seßtion.
showing the completed point applied to o tubulor
istie or nigh carbon steel when 1t ls cooling down,
@mi @his Will be älœomlölished e@ the Seme time
that the point ls leelng svveged.
Ä Sï’lßït @umile-‘_’ Emilion M3 (Figure 3) muy ï@
celve ’alle end of e. Wooden lee,r or pole
es 45
steel shaft;
Figure 31s s View, ln longitudinal section, slrovving
e modification of the invention suplico to s
45
Wooden pole;
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Figure 4 is a, transverse sectional View telreu ln
the plane indicated by the line d-tl of Figure 3,
looking in the direction of the arrows; und
50
Figure 5 is a transverse sectional view teken lo
the plane indicated by the line ä--ä of Figure 2.
What may be called the blank from which the
shoe ls formed into its final shape (Figure 2) is
illustrated generally at 8, in Figure l. lt is pref”
55 erebly of cold rolled or high carbon steel turned
shown in Figure 3, or it muy be one end of o
steel tube serving as the pole, in which event, lf
desired, it muy loe corrugated for» strength, es ‘
shown ot ll (Figure 2) whereby e thinner Welled
tube con be used.
5o
Thus a hard steel point is provided which een
be shaped so as to give the leest possible resist
ance to entry into the ground. It is adaptable
for round poles, corrugated poles, for shoes only
of wooden rods, such as ranging poles, for shoes 55
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2,12o,soe
of tripods, Jacob's staffs and similar" articles
requiring sharp and hard points.
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Various modifications will occur to those skilled
in the art in the composition, coniiguration and
disposition of the component elements going to
make up the invention as a whole as 'well as the
use to which the point is put and no limitation is
intended by the phraseology of the foregoing de
scription or illustrations in the accompanying
drawing, except as indicated in the appended
claims.
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l. The method of making a hard point for
poles comprising forming a shoe part oi steel
having a taperingend and the opposite end of re
duced constant diameter, inserting the end of re
duced diameter in a tube portion oi’ constant
diameter and forming the parts to tapering
shape.
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part oi' high carbon steel having a tubular por
tion remote from the point, inserting the tubular- .
portion thereof in a tube of low carbon steel and
'swaging the -partsto a shape tapering toward
the point.
4. The_method oi' securing together portions o!
a point for poles comprising forming a point
portion with an outwardly flaring end and con
Y stricting the end of a tubular portion thereabout.
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What is claimed isz-
a. The manta or making a mrd point :or
poles comprising forming a. solid pointed shoe
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20 ` 2. The method of making a hard point for poles
5. The method of making a hard point for poles
comprising forming a shoe part with a cylindrical
portion, inserting the cylindrical portion in a
tube portion and thereafter forming the shoe part
and the tube portion in contact therewith to
tapering shape.
6. The method o! securing together portions of
-a point for poles comprising forming a point
portion with an outwardly flaring end, the di 20
comprising forming a. shoe part of steel having a
ameter of which, proximate the point portion, is
tapering end and the opposite end cylindrical and
less >than the diameter of the adjacent portion to
deiine a shoulder therebetween and constricting
thereabout the end of a tubular portion 4abutting
the shoulder.
ADOLF W. KEUM
. of reduced diameter and provided with a hollow
bore, inserting said portion o! reduced diameter
in a cylindrical tube portion and forming the
parts to tapering shape._
l
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