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Патент USA US2109778

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l, 1938 l
2,109,178 _.
-; n f UNITED 'w'..s'lïßl'res,Il im'relsg'r` orifice i. _
Johann Meersteine'r, Saal,- Olechoslovalda, ais-signor to the ñrm Bechert & Co., Drahtstifte-,
Schranben- und Stahlindustrie-Akticngesell
schai't, Saaz, Clechoslovakia'
Applieesen December 1s, 193.5, serial Ne. 54,515
’ -In Czechoslovakia December 22, 1934
s claims. (ci. isi-14)"
'I'his invention’ relates'to screw locking means
It will beobvious that the wire'l or'one like
and the method of application thereof. One ad ’ it, may'be provided in the groove 6 of the’nut
vantage of the invention is the provision of if desired, .and it will then correspondingly cut
means whereby such articles as annut and bolt, or deform the land 2 of the bolt. It will alsol be
5' or a bolt to be screwed into a threaded socket,
the wire
to deform
may bethe
land various
with which
it 5
can be locked together by the mere application .clear
_ of ordinary tightening up in such a way as to
co-operates, or`actually to cut it, as described
, render them unaiîected by vibration.v
advantage is the provision 'of locking lmeans
which will remain effective even after repeated
tightenings up of the screwed elements. Yet an
other advantage is the fact that the locking
means 'can be provided either externally or on
the internally threaded‘co-operating parts. .
' With the above and other objects in. view, the
What I claimisz-
.1. >Screw locking means comprising two co- lo
operating ordinary threads and a ,cutting ele
ment disposed in the groove of one of'them to
cut the land of the other.
2. Screw locking means comprising two ele
ments having complementary threads, and a l5
‘invention’ consists in the» provision between
. hard wire helix interposed between the threads
>threads which are 'to interengage, of a helical
when engaged, located in the groove of one and
- facing the land of the other, and presenting to
length of hard wire o_r the' like, preferably pro
vided With a cutting edge, and adapted to be
20 positioned in thegroove of a thread or threads
the latter a longitudinally extended edge having
a profile adapting itA to cut or deform the land
and upon tightening up to deform, cut or jam
‘ the projecting part of the complementary thread.
on relative rotation of the threaded elements.
- The invention is illustrated diagrammatically inA
having the wire helix of such cross-sectional
~ 3. Screw locking means as set forth in claim 2
the accompanying drawing, which is a section -contour as to render its opposite longitudinal
25 lthrough a nut and bolt for. the purpose of ex
edges, presented respectively to the groove of 25
ample. In this ~drawing the bolt I has an ordi
one thread and 'to the land of the other, cutting
-nary or normal thread with land '2 and groove 3, ‘ or deforming on relative rotation of the-threaded
of course helically disposed.v The nut l likewisel
has an ordinary or normal thread having land
- 4. For locking screw-threaded members such '
,'30 5 and groove 6. The crest i. e. top surface or - as a nut and bolt, the provision of a hard wire 30
' edge that joins the two sidesof the thread is helix in the grooves of the thread of the bolt
shown as deformed by the wire 1 located between member, the wire having edges to bear against
the crest and thevroot, i. e. the bottom of the and cause deformation of the groove in which it
space `between the threads, and opposed to both lies, and the land of the thread of the comple
35 the crest and the root.
-mentary member, such that locking is eüected 35
In -the groove 3 of the bolt there is wound or by deformation due to the wire upon tighten
applied a helix of hard Wire 'l which in the pre
ing up.
ferredA form sho-wn is of parallelogram" section, " 5. ,For locking lscrevjv-threaded- members such
preferably so shaped that itshinner apex iits into as a nut- and bolt, the provision of a hard wire
40 the‘groove 3 of the bolt (andthis groove may, Y helix 1n the grooves ofthe thread er the bolt 40
over the'material part oi the-length of the bolt,
be suitablyformed to this end) ' and its external
member, the wire -helix _being of hard wire of
four-sided cross-section and having edges to bear ,
against and cause defamation of the groove -in
which it lies and the land .of the thread, oi’ the
edge likewise presenting a relatively sharp cut
ting profile, as can be seen at 1A.
The acute
45 V-form oi.' the groove l need not> be initially ap
complementary member,l -such that locking is“s
¿._plied to the bolt, but may b_e the result oi cutting
effected by deformation dueto the wire 'upon
„» -action o_f the wire 'I upon tightening up, as is well
tightening up.
illustrated by the position of the wire .1 in the
bottom turn oi the thread, represented at 3A.
50 The method of use of this device is simply to
¿ .
r6.'S'crew locking means comprising a nor
mally- threaded -bolt and nut with complemen
my threads, end e third and here element eddi- 5°- '
tighten the nut on to -the'bolt,` whereupon the; tional to -said threadsinterposed between the
- wire 1 ,cuts the land-I of the nut and deforms the threads of said respective members, located in
land (as indicated for example at IA), in such the groove loi' one,> and facing the’ root of one and
a manner as to'lock the nut on the> bolt as a re
the crest ot the other for locking the parte -to‘
55 sistance _againstall ordinary. dlßtllrbànçeßi tuch ` gether on relative rotation of the nut and bolt. i “5
as vibration.
.Patent-,Nm 2,109 ,778;
March l,` 1958.
Í Itis hereby certified that the abo-ve numbered patent was erroneouslj
vissued to "Bechert 8è Co. , Drahtstifte-,` Schrauben- -und Stah1industr:î.e_- Aktiengesellschaft" as' assignee of the entire interest in said invention,'. whereassaid Letters Patent should have been issued to the inventor, said
Meersteiner and Bechert 8c. Co., Drahtstifte-, Schrauben- und Stahlindus- -
trie-Aktiengesellschaft of Saaz', Czechoslovakia, saidfilg‘m`- being assignee
vof'one-hxail'f interest only in'said-invention, as shown by the- record of
assignments inthis office; .and that _the said Letters Patent should be
read with'this -correotion therein that the same m'ay vconform' to the record
ofthe oase in the Patent Office.l
Signet-1> and _sealed this 19th day of April, A. D. 1958.
rActing Commissioner fof`~ Patents. '
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