close

Вход

Забыли?

вход по аккаунту

?

Патент USA US2412941

код для вставки
Dec. 24, 1946.
G. H. B‘ANNERMAN ETAL
2,412,941
METHOD OF APPLYING A FITTING TO A ROPE
OriginaLFiled Nov. 17, 1937
2 Sheets-Sheet l
Jaw/£5. M‘ (ween/v and
?LE/v H. Roar.
Dec. 24, 1946.
G. H. BANNERMAN ETAL‘
7 2,412,941
METHOD OF APPLYING A FITTING TO A ROPE
Original Filed Nov. 17, 193'?
2 Sheets-Sheet 2
_ _ _ _
I
‘
I
'
_
_‘
bweizz'oxss
?oeaoxv // 54/V/VEEM4/V,
J4ME5 M. CUEE?/V and
645v H Teal/r. ‘
Patented 95'!-
24, 1946
_ * 2,412,941
umrso STATES, PATENT
'
v OFFICE
2,412,941
METHOD OF APPLYING FITTINGS T0 ROPES
Gordon H. Bannerman, Worcester, Mass, and
James M. Curran andGlen H. Trout, Omaha,
Nebr., assignors to The American Steel and
Wire Company 01' New Jersey, a corporation 02
New Jersey
Continuation of application Serial No. 175,165.
November 17, 1937. This application June 5,
1940, Serial No. 339,026
1 Claim.
3
This invention relates to a method of apply- \
ing rope ?ttings and is particularly concerned
with the application of a ?tting to a wire rope in
such a manner that the ?tting is positively ?xed
(Cl. 213-4148)
2
tendency respecting the latter even when the
rope’s diameter is reduced by its operating ten
sion.
The rope I is placed under tension at least
against movement longitudinally of the rope
equaling and preferably exceeding 30% oi’ its ulti»
when the latter is subjected to its normal oper
mate strength, the normal operating tension for
ating tension.
.
which it is designed. The liners l0 are, of course,
By way of a speci?c example, the accompany
positioned within the ‘lug and should be made
ing drawings illustrate the application of a ?tting
from a material that is slightly plastic under
in such a manner as to anchor the swinging car 10 pressure yet which has the ability to withstand
rier arm of a wire rope tramway or conveyer
repeated impact stresses resulting when the lugs
against movement longitudinally of the conveyer
rope, the various ?gures being as follows:
Figure 1 is a transverse view of the conveyer
rope and one of the arms;
Figure 2 is a side view of Figure 1;
Figure 3 is a transverse section of the ?tting;
Figure 4 is a longitudinal section of the same;
and
slightly out of registration at this time,'regis~
tratlon being effected by placingthe lugs between
‘
Figures 5 and 6 are elevations taken in di?’er
ent directions of part of the equipment used in
the application or" the ?tting.
pass over the rollers of the tramway system of
which the rope is a part. Assuming the lug to
be made of steel, copper is a good example of a
desirable liner material. Piano hinge elements
7 of the two parts of the lug 6 are so constructed
that the holes in the respective elements are
.
the jaws l2 of a suitable hydraulic jack I 3, these
laws embracing the parts of the lug 6 to bring
the holes of its piano hinge elements to registra
In these drawings, the tramway or-conveyer
tion, this constricting the rope. i to a diameter
less than that to which it is reduced by the
applied tension and permitting insertion of the
pins 8, the ends of which are then ‘upset, to re
rope by way of spaced heads 3 through o?sets i,
tain them in position. Pressure exerted by the
each head consisting, of two semi-cylindrical
jaws I2 is sufficient to cause the copper liners to
halves interfastened by rivets 5 so as to relatively
flow slightly and creep between the individual
loosely embrace the rope 8, whereby the hanger 30 wires of the strands of the rope I.
arm 2 may swing relative the latter.
The advantage of the resulting installation re
The present invention is exempli?ed by a lug
specting the ability of the lug 6 to remain ?xed
8 which is ?xed to the rope l between the heads
in position even when the rope I is tensioned
3 so as to anchor the latter against movement
so that its diameter slightly reduces has already
longitudinally of this rope. This lug is in the
been mentioned. A further advantage is that a
rope I is made of wire, and supports a series of
depending arms of which only one, numbered
2, is illustrated. This arm connects with the
form of inter?tting semi-cylindrical parts hav
ing cooperative piano hinge elements 7 on their
respective abutting edges through which pins 8
may be driven to effect interiastenlng. The two
semi-cylindrical parts of the lug do not directly
wire rope even when it has a wire center or core
is. subject to some internal wear whereby its di
ameter is continuously reduced during service.
Due to the fact that the lug 6 is constricting
the rope to a diameter considerably smaller than
engage the rope i but are internally recessed, as
its normal diameter, the lug does not loosen even
at 9, so as to retain liners it in such a fashion
when such internal wear reduces the rope’s diam
that‘ the latter ..:e interposed between the parts
eter. Due to the fact that external wear is oc~
and the rope l. These liners illhave their inside
curring on the portions of the rope not protected
surl’aces helically grooved, as at it, in such a 45 by the lug 6, the service life of the rope reaches
fashion that these grooves ?t the individual
its end prior to the time the internal wear of
strands of the wire rope.
the rope within the lug 8 causes loosening of the
A particularly characterizing feature of the
latter.
' above ?tting or lug 6 is that it constricts the rope
It is to be understood that the external wear
to a‘ diameter substantially less than that diam 50 mentioned is caused by the rope irictionally
eter to which the rope is reduced by the operat
working against various surfaces, such as that
ing tension which it is designed to normally ac
of the sheave l4 illustrated in the drawings.
commodate. It has been found that by so ap
This application is a continuation 01' our co
plying the ?tting it remains absolutely ?xed rela
pending application of the same title, bearing
tive the rope because it exerts its constricting
Serial No. 175,165 and ?led November 17, 1937.
.
e,412,941 '
3
We claim:
A method of applying a, ?tting to a rope, said
?tting being adapted to encircle and constrict
.
.
a3
.
ing tension for which the same is designed, and
said method being further characterized in that
said rope so as to be Positioned against move
the latter is applied to said rope while the same
is so tensioned so as to constrict said rope with a.
ment longitudinally of the same, said method
being characterized in that said rope is tensioned
sumciently to reduce its normal diameter during
diameter.
the application of said ?tting, the force used to
so tension said rope exceeding the normal'work
force su?lcient tostill further reduce its normal
aoRno‘N H. BANNERMAN.
J
M. CURRAN.
Документ
Категория
Без категории
Просмотров
0
Размер файла
251 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа