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Патент USA US2136866

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Nov. 15, 1938.
'
M. w. REED
WIRE
ROPE
Filed June 10. 1938
‘ ‘
2,136,866
I
‘
2 Sheets-Sheet 1
[mm/afar:
Nov. 15, 1938.
2,136,866
M. w. ‘REED
' WIRE HOP-E
Filed June ‘10,1938
-
2' Sheets-Sheet 2 -
-
17608725071“
?f/‘?LCOLM % A? 50,
Patented Nov. 15, 1938
' 2,136,856
PATENT-OFFICE"
UNITED ' S/TATE‘S
2,136,866
wms acre
Malcolm w. Reed, Shaker Heights, om»
Application June 10, 193/8, Serial N0. 213,095
4 Claims. (Cl. 117--59)
of strands l0 helically laid, in the conventional
This invention relates to Wire ropes or cables
and in particular to wire ropes designed for gen
manner, around a core ll of the same or of dif
eral ‘hoisting purposes. .
ferent material than the main core formed from
An object of the present invention is to pro
the complemental sections 3, 4 and 5; in either
5 vide a wire rope in which the wire strands may case, the material of said core II is softer than 5
all be laid into their helical positions in such a the material of the wires I0 forming the strands
way as to provide proper distribution of the load of the ropes 9.
In the showing in Figure 1, the complemental
ofv the rope among the strands, and at the same
time provide a construction which will retard , core sections produce a circular core in which;
10 or prevent the wire strands from coming ,into the spacing members 8 extend from the center 10
contact with each other while the wire rope is to a point at least as far as the point of normal
in use.
'
tangency between the strands 2.
In Figure 2, the spacing members 8 are shown
.
A further object of the invention is to provide
as extending beyond the point of normal tan
gency of the wire strands 2 or, if desired, the 15
spacing members [may terminate at‘ a point
within that indicated by a circle circumscribing
a rope which, when of a given strength, will bend
.15 without excessive stress over sheaves having
' diameters smaller than are now generally recog
nized as being proper for good rope usage.
Another object of the invention is to provide
a rope which has an improved resistance to slip
page, on sheaves and drums.
‘
Theseand other advantages will become ap
. parent as the description proceeds, in which:
Figure 1 is a transverse section of a rope struc
ture embodying the present improvements ;"
25
Figure 2 is a transverse section of a rope struc
, ture embodying a further feature of the present
the wire strands in their positions in the com
pleted rope, as shown in Figure 3.‘
'
_
In Figure 4, the spacing members 8 areyshown 20
as terminating in normal tangency with. the wire
ropes 9. However, if desired, said spacing mem
bers may terminate at either a point beyond or
at a point within the normal tangency of the
wire ropes as similarly shown in Figures 2 and'3
for the wire strands 2.
,
'
In the showing in Figure 5, the cable comprises
invention; '
Figure 3 is a transverse sectionv of a rope struc
ture embodying a still further feature of this
30 invention;
v
Figure 4 is a further showing of a modi?ed con
struction, and
the main core sections 3, 4 and 5 having the
spaced members 8 formed integrally therewith
and includes the general ‘construction 011 that 30
described with respect to the main coreof the
other ?gures. In this modi?cation, the cores of
'
Figure 5 isva further showing of a modi?ed
. construction of Figure 4 in which the cores of
,as the individual ropes are segmental members.
In the drawings, the rope of the present in?
vention comprises a core upon which the wire
strands 2 are helically laid. This core may be
of metal, ?ber, synthetic chemical compounds,
the individual wire ropes 8 are of identical con
struction with that of the main core and com
prises the complementary sections 3“, l“ and 5“ 35
with, the integral spacing members 8?, as well
as the cylindrical base 6" and the substantially
parallel sides ‘Iti within which‘are helically laid
the plurality of strands. In this construction,
40 rubber, rubber fabric or a combination of any the strands forming the separate rope elements 40
of these or other substances, which is of a softer which are positioned within the grooves formed
or more resilient material than the wire strands 2. ' in the main core sections are spaced from each
The core is made up of a plurality of sections other so that when the cable isv in use they will
3, l and 5 complementing each other to form a not come into contact with each other. The 'ma
4 circular core member having grooves formed in terial from which the segmental core sections 45
the periphery‘ thereof to provide a- cylindrical , 3}‘, 4e and BB‘are formed may be 01' a material
base 6 and substantially parallel sides 1 adapted similar to that of the main core, and of a softer '
to form spacing members 8 integral with the i or more resilient material than the wire strands
50' core section's.
\
a‘.
. I
The strands 2 may consist of a plurality of
individually small wires helically laid upon each
forming the individual ropes. ,
Wire ropes, for’ general purposes, are usually
formed with a core of such substance, size and
50
other in the conventional manner of making wire ‘ design that the wire strands, when laid up heli
rope strands or, if desired, of‘ a plurality of wire cally around this core, touch or come close to
~55 ropes 9 each or which consists of a plurality touching each other. This is considered essen- “
2
2,186,866
other, said core comprising a plurality oi’ inter
?ttlng sections.
2. A cable comprising a plurality of separate
tial in order that each strand of the rope ’shall,
when in service, take its proper share of the load
carried by the rope.
During the working of the rope, the core, in
wire ropes helically wound about a main core, said
many cases, wears away or compresses to a fur-r,
separate wire ropes including a plurality of wire
ther degree and permits the wire strands to bear
more and more tightly against each other. The
strands wound about individual cores, all of said '
continued working of a rope under such conditions
causes the wires of one strand to wear into the
10 wires of the adjacent strands, with a resultant in
terlocking which stiil’ens the entire mechanical
construction of the rope, induces earlier fatigue
of the wires, and thereby shortens the life and
useful service of the wire rope.
However, under the present invention, I have
15
cores including the main‘ core being provided
with means adapted to prevent said wire strands
and ropes from coming into contact with each
other.
3. A cable comprising a plurality of separate
wire ropes helically wound about a main core,
said separate wire ropes including a plurality of
wire strands wound aboutindividual cores, said
cores including said main core being ot'a mate
constructed a ‘wire rope which will permit the ‘ rial softer than the wire ropes or strands and
proper distribution of the load of the rope among
the strands, and afford adequate safety factors
when used, for ‘example, in elevator installations.
While I have shown and described speci?c em
bodiments of my invention, it will be understood
that I do not wish to be limited exactly thereto,
since various modi?cations may be made with
out departing from the scope of the invention as
de?ned by the following claims.
‘
'
I claim:
1. A wire rope composed of twisted wire strands
and a core provided with means interposed be
tween said wire strands to prevent said wire
strands from coming into contact with each
provided with means adapted to prevent said
wire ropes and strands from coming into contact
with each other, said main core comprising a
plurality of inter?tting sections.
4. A cable comprising a plurality of separate
wire ropes helically wound about a main core, said
separate wire‘ ropes including a plurality of wire
strands wound about individual cores, all of said
cores including’ the main core‘ being provided with
means adapted to prevent said wire strands and
ropes from coming into contact with each other
.and comprising a plurality of inter?tting sections.
MALCOLM W.
30
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