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Nov. 5, 1946.
2,410,416
R. F. JOY
ROPE SLING
Filed Feb. 29, 1944
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R. F. JOY
ROPE SLING
Filed Feb". 29, 1944
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2,410,416
Patented Nov. 5,i 1946
UNITED sTATEs PATENT oFFlcE
2,410,416
ROPE SLING
Robert F. Joy,-> Bethlehem, Pa., assìgnor to y
Bethlehem Steel Company, a corporation- 0f
Pennsylvania
Application February 29, 1944, Serial No. 524,497
16 Claims. (Cl. 87-8)
1.
This application is a continuation’in part of
my co-pending application Serial No. 459,155,
ñled September 21, 1942, now Patent No. 2,359,424,
covering Improvements in a rope sling.
,
My invention relates to rope slings and to a
method of making them.
Oneof the objects of my invention is to provide
2
member 23 overlaying body member 24, and pass
ing it through right outside loop 29 as shown in
Fig. 2. This step positions loop 29 in the center
whereupon it isv rotated in a counter-clockwise
direction, body member 26 overlaying body mem
ber 25, and passed through left outside loop 2`|>as
shown in Fig. 3. This step positions loop 2l in
a method of forming a wire rope sling from an
the center whereupon it is rotated in a clockwise
endless unit.
direction', body member 22| overlaying body mem
ber 22, and passed through right outside loop 28
'
,
-
Another object of my invention is to provide
a method' of forming a multi-part wire rope sling
from a wire rope strand spliced to constitute an
as shown in Fig. 4. Each loop as it becomes the
center loop ,is twisted either in a clockwise or
endless unit.
counter-clockwise direction, whichever is Aoppo
sitev tothe twist imparted in the previous opera
tion, and is passed either through the loop to
the right or left, whichever direction is opposite
to the direction of passing of the previous opera
’
Another object of the invention is to provide a
sling of great lifting ‘capacity and high tensile
strength.
-
Another object of my invention is to provide
a non-spinning, non-kinking sling which has
great flexibility.
tion.
This procedure is continued until just
enough of the loops remain to form eyes.
The novel features of my invention will be more
Referring now more particularly to Figs. 7 to
fully understood from the following specification 20 14, inclusive, of the drawings, I show arope in the
and claims, taken with the drawings, in which:
various stages of being interwoven into ’an eight
Figure 1*'is a plan view showing diagrammati- ,
part sling. An elementary strand 34 is folded
cally a rope folded preparatory to interweaving
upon itself to provide eight body members 35,' 36,
a six part sling by my novel method;
31, 38, 39, 40, 4| and 42 with four loops 43, 44, 45,
25
Figs. 2. 3 and 4 are plan views showing dia
and 46 at one end, and three loops 41, 48 and 49
grammatically the steps of my novel method of
and two free ends 50 and 5| at theother end.. It
interweaving a sixvpart sling;
' '
,
should be noted that no twisting of the separate
Fig. 5 is a plan view of a section of a six part
loops is employed prior to interweaving. The free
sling made in accordance with my invention:
30 ends 50 and 5| can be spliced together as shown
Fig. 6 is an end view ofthe six part sling shown
in dotted lines in Fig. 7 either before the start or
in Fig. 5;
‘
at' the ñnish of the making of the sling. Tem
Fig. 7 is a plan view showing diagrammatically
porary seizing may be applied preferably near
a rope folded preparatory to interweaving an
the end having the two free ends 50 and 5| or`
eight part sling by my novel method;
35 splice to position the loops in their proper rela
Figs. 8, 9, 10, 11, 12, 13 and 14 are plan views
tionship. Instead of applying seizing, the splice
showing diagrammatically the steps of my novel
end may be passed over an eye-forming block and
method of interweaving an eight partv sling; and
secured thereto by means of wires or other lock
Fig. 15 is a plan view of a section'of an eight
ing means which pass through holes in the block.
part sling made in accordance with my invention.
40 Preferably, interweaving is started by twisting the ~
Referring now more particularly to Figs. 1 to 4,
right center loop 45 in a clockwise direction so
inclusive, of the drawings, I show a rope in thethat body member 39 overlays body member 40
various stages of being interwoven into a >six part
and then passing loop 45 through the outer right
sling. An elementary strand 20 is folded upon
hand loop 46. This step is shown in Fig. 8, loop
itself to provide six body members 2|, 22, 23, 24, v4 46 being now the right center loop. .Loop 46 is Y
25, 26 and three loops 21, 28, 29, at one end, and - 5 then given a twist in a counter-clockwise direc
two loops 38 and 3| and two free ends 32 and 33. '
tion, body member 42 overlaying body member
The free ends 32 and 33 can be spliced together
4|, and is passed through the left center loop 44.
as shown in dotted lines in Fig. l either before the
This step is shown in Figl 9, loop 4'5 being now
start or at the finish of the making of the sling. 50 the left center loop. 'Loop 46 is Ythen given a
Seizing is applied preferably to the endhaving
twist in a counter-clockwise direction, body mem
the two free ends or splice, or instead of seizing,
ber 4| overlaying body member 42, and outer left
the spliced end may be passed over an eye
hand loop 43 is given a twist in a clockwise direc
forming block. Interweaving is started by rotat
ing center loop 28 in a clockwise direction, body
tion, body member 35 overlaying body member 36,
55 and loop 43 is passed through loop 46, loop 46 now f
w
2,410,416
being the outer left-hand loop,`this step being
left outside loop, and twisting said left outside
shown in Fig.V 10. It will be noted ¿that loop 46, i
loop clockwise and passing it through said center
the original outer right-hand loop has straddled
the ñrst loop to its left, passed through the next
loop, and straddled the last loop to become the
outer left hand loop. This procedure is repeated,
that is, the outer right-hand loop is alternately
passed over and through the adjacent loops until
it straddles the oppositely twisted left outside
loop when it becomes itself the outer left-hand
loop, a counter-clockwise twist being imparted to
it after it passes over the first center loop and
after it passes through the second center loop.
It will be seen, upon reference to the drawings,
that the body members of the loops are alter
nately divided and paired by the `other loops and
that after being divided and prior to being paired
each loop is given a twist; and that the twist is
in one direction when the loop travels from right
to leftand is in the other direction when the 20
loop travels from left to right. This procedure of
twisting serves to lock the loops one within the
other and by reversing the twist there will be no
oop.
~
5. The method of producing a multi-part ilexi
ble sling which comprises folding an elementary
strand to form a left outside loop, a center loop
and a right , outside loop, twisting said center
loop clockwise and passing it through Ísaid right
outside loop. twisting said right outside loop and
passing> it through said left. outside loop, and
twisting said left outside loop in a direction oppo
site to that of said right outside loop and passing
said left outside loop through said center loop.
6. The method of producing a multi-part ñexi- '
ble sling which comprises folding an elementary
strand to form a left outside loop, a left center
loop, a right center loop, and a right outside
loop, passing said right center loop through said
right outside loop, passing said right outside loop
through said left center loop, and passing said
left outside loop through said right outside loop.
'7. The method of producing a multi-part flexi
. ble sling which comprises folding an elementary
strand to form a left outside loop, a left center
tendency in the finished sling to twist upon itself
and the loops will remain free of twistV throughout 25 loop, a right center loop, and a right outside
loop, twisting said right center loop and passing
weaving. ` This process is continued until a point
it through said right outside loop, twisting said
right outside loop and passing it through said
left center loop, and twisting said left >outside
ing whichbinds them in a compact form' and 30 loop and passing it through said right outside
loop.
makes a single loop into which a thimble may be
8. The method of producing a multi-part flexi
My method of forming slings by passing a loop
ble sling which comprises folding an elementary
through 'an adjacent loop will produce a sling
strand to form a left outside loop, a left center
in which each member of all loopswìll be effec 35 loop, a right center loop, and a right outside
tively locked against a member of an adjacent
loop, twisting said right center loop in a clock#
loop.
'
wise direction and passing it through said right
outside loop, _twisting said right outside loop in
While I have shown my invention in a plu
a counter-clockwise direction and passing it
rality of forms, it will be obvious tothose skilled
in the art thatit is not so limited, but is suscepti 40 through said left center loop, and twisting said
ble of various other changes and modiñcations
left outside loop in a clockwise direction and
passing it through said right outside loop.
without departing from the spirit thereof, and
9. A flexible multi-part sling formed from a
I desire, therefore, that only such limitations
single elementary strand, said sling comprising a
shallbe placedthereon as are imposed by the
has been reached where just enough of the loops
remain to form eyes. The end loops or eyes are
fastened together preferably with ñne wire serv
inserted.
`
,
v
prior art or as are specìviically set forth in the 45 plurality of interwoven loops, eachof said loops
appended claims.
Having thus described myl invention, what I
claim as new and desire to secure by Letters Pat
comprising two body members alternately divid
ed and paired by body members of adjacent loops
alternately disposed> intermediate said divided
ent is:
'
,
portions and around said paired portions.
l. The method of producing a multi-part flexi 50
10. A flexible multi-part sling formed from a
single elementary strand, said sling comprising
ble sling which comprises folding an elementary
three. interwoven loops, each of said loops having
strand to form a plurality ofloops‘, passing a
ñrst loop througha second loop, and then passing
two body members alternately divided and paired
by the body members of adjacent loops.
said second loop through a third loop.
` 2. The method of producing a multi-part flexi
ble sling which comprises folding an elementary
strand `to form an outside loop, a center loop
and another outside loop, passing said center
loop through said first mentioned outside loop,.
and then' passing said first mentioned outside 60
11. A flexible multi-part sling formed from a
single elementaryvstrand,- said sling comprising
four interwoven loops, each of said loops having
two body members alternately divided and paired
by the body members of adjacent loops.
.
12. A flexible multi-part sling formed from a
single elementary strand, said sling comprising
a plurality of interwoven loops, each of said loops
3. Themethod of producing a multi-part flexi
comprising two body members alternately di-.
ble sling which comprises folding an elementary
vided and paired by body members of adjacent
strand to'form a plurality of loops, twisting a
loopand passing it through a second loop, twist 65 loops alternately disposed intermediate said di-vided portions and around said paired portions
ing said second loop in a direction opposite to
and said body members having a twisted portion
that of said first mentioned loop and passing said
loop through said other outside loop.
second loop through a third loop.
f
adjacent said divided portion.
.
„
13. A fiexible multi-part sling formed from a
4. The method of producing a multi-part ilexi
ble slingwhich comprises folding an elementary 70 single elementary strand, said sling comprising
three interwoven loops, each of said loops com
strand'to form a left outside loop, a center loop
prising two body members having alternate di
and a right outside loop, twisting said center
vided portions and paired portions, body mem
loop clockwise and passing it through said right
bers of adjacent loops passing through said di
outside loop, twisting said right outside loop
counter-clockwise and passing it through said 75 vided portions and passing around said paired
2,410,416
portions and said body members having a twisted
portion adjacent said divided portion.
_ 14. A ñexible multi-part sling formed from a
single elementary strand, said sling comprising
four interwoven loops, each of said loops com
prisingtwo body members alternately divided
and paired by body members of adjacent loops,
each` of the adjacent loops alternately passing
,
6
strand to form a series of loops, said series o1'
loops comprising outside and center loops, then
passing a. center loop through one of said'out
side loops, and passing the latter outside loop
through another of said series of loops.
16. The method of producing a multi-part flex
ible sling comprising folding an elementary
strand to form a series of loops, said series of
through a divided portion of the body members
loops comprising outside and center loops, then
of a. loop and around a paired portion of the
10 twisting a center loop and passing it through
body members of a succeeding loop, and said
one of said outside loops, and twisting the latter
body members having a twisted portion adjacent
outside loop and passing itthrough another of
each of said divided portions.
.
’
15. The method of producing a multi-part flex
ible sling comprising folding an elementary
y said series of loops.
ROBERT F. JOY.
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