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Dec. 10, 1946.
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J. T. PARSONS ET AL - I
2,412,420
BOMB PROTECTIVE BAND
Fil'ed Jan. '11, 1943
'
2 Sheets-Sheet l -
INVENTI‘OR.
(1m 7'P42190225 &
' E? mam’myfm
glib/M‘
Patented Dec. 10, 1946
£412,420
UNITED STATES PATENT orrics
2,412,420
BOMB PROTECTIVE BAND
John T. Parsons and Axel V. Brogren,
Detroit, Mich.
Application January 11, 1943, Serial No. 472,078
2 Claims.
(Cl. 102—1)
1
2
This invention relates to protective devices
adapted to be applied to rounded objects and par
ticularly to a detachable protective band for en
the bomb illustrated in the drawings in longi
tudinally spaced condition.
_
Bombs are usually stacked in close relation in
storage and in shipment, in order to protect the
circling a bomb.
Bombs of the type which are dropped from air- I
planes are usually provided with projections or
lugs on the sides by which the bomb is suspended
prior to falling. These projections or lugs are
likely to become damaged or broken during the
lugs or projections l2, and at the same time pro
vide a circumferential construction which will
facilitate stacking and handling the protective
means, completely encircles the bomb and is of
the same radial thickness throughout. The pro
handling, shipment or storage of the bomb. An 10 tective means in operative position is in the form
important object of this invention is to provide
of a metal band having a hollow interior in which
the lug or lugs are protectingly housed. Such a
a strong, rugged, quickly attachable or detach~
able band for protecting these projections or lugs
band is preferably formed of a plurality of mem
from damage.
bers in the form of arcuate segments pivotally
The band of the present invention is arranged
connected together. Each member is channel
to encircle the bomb and enclose the lug there
shaped in formation and arranged when encir
cling the bomb to provide a housing in which the
within. An important novel feature of the band
projections and lugs are received.
construction is the provision of means which per
mits variation in the size of the band to accom
Two such bands formed in accordance with the
modate variations in the outside diameter of the 20 present invention are generally indicated at
ill-4ft in Fig. 1. Each band comprises a plurality
bombs for which it is intended, and at the same
time cause the band to snugly engage the bomb
of arcuate segmental members, preferably three
to protect the lugs regardless of these variations.
or more. The band illustrated in Fig. 2 of the
drawings consists of three arcuate members I6,
Various other objects, advantages and meritori
ous features of the invention will become more
l8 and 20, all of channel formation. These mem
fully apparent from the following speci?cation,
bers are pivotally joined end to end to form a
appended claims and accompanying drawings,
linked series. The adjacent ends of tWo of the
wherein:
members are pivotally connected to the opposite
Fig. 1 is a side elevation of a bomb encircled by
ends of the third member, while the remote ends
of the two outside members are left free for at
two protective bands of the present invention,
2‘ is a longitudinal sectional view of one of
tachment or detachment from one another as
desired. The mode of pivotal connection of the
the protective bands taken along line 2—.2 of
members is preferably by transverse pins 22 ex
Fig. 1,
~
Fig. 3 is a side View of one portion of the band
tending through overlapping end portion of the
taken along line 3-3 of Fig. 2 and showing the
members. All the members are of the same arcu
ate formation and when circularly disposed as in
Fig. 2 form a band having an internal diameter
catch mechanism,
'
Fig. 4 is a cross sectional view along line 4—4
approximating the outside diameter of the size
of Fig. 2,
Fig. 5 is a cross sectional view along line 5——5
of Fig. 2,
'
of the bomb for which it is intended.
The segmental members are channel shaped as
40
Fig. 6 is a view in elevation of the protection
hereinabove described, and with the'exception of
band showing the parts in open condition prior to
one member face or open inwardly toward one
another. In the illustrated embodiment of the
complete encirclement of a bomb,
Fig. '7 is a sectional view of the catch mecha
invention the channel members It and [\8 open
45 inwardly toward the bomb surface and form. a
nism along line 1—1 ofFig. 6, and
protective housing in combination therewith, for
Fig. 8 is a view of the protective band showing
enclosing the projections or lugs £2. The third
how the band may be collapsed to a reduced size
member 20 is arranged with its channel forma
when not in use.
tion facing outwardly away from the other mem
A bomb of the usual type minus the tail or ?n
section is shown generally at I!) Fig. 1. This por 50 bers and the bomb. In this open channel mem
tion is provided with projections or lugs on its
ber means is provided for connecting the free
ends of the band around the bomb.
circumference from which the bomb is suspend
ed prior to falling from the airplane. One such
The connecting means for releasably joining
the ends of the band about they bomb comprises a
lug is indicated at l2 invFig. 1, and in dotted
outline in Fig. 2. Two such lugs are provided on 55 transverse ‘pin 24 on the free end of member 16.
2,412,420
4
3
which the band is intended. This means is asso
The bottom of member I6 adjacent to the free
ciated with the catch mechanism and. comprises
end is cut back so that only the side walls of its
a spring member 36 of ?at spring metal stock,
channel formation continue to the end, and it
shaped with a hooked end capable of engaging
is across this cut out portion of the member which
the pin 24, as shown in Fig. 2. The intermediate
the pin 24 extends. This is clearly shown in Fig.
portion of the spring member is convoluted to
3. Fixed in the open section of member “5 is a
give the desired springiness. The opposite or
small inverted channel shaped member 25, which
rear end is coiled about the pin 34. The spring
has a slightly less radial depth than the side walls
is upheld in normal operating position by the
of member l5, in order that it may overlap upon
the bottom member 20 without disturbing the 10 pin 32 and has a limited play between the pin and I
the base of the channel link 28. The spring
circular relationship of the parts as shown in Fig.
member has such a length that when the ends
2. Pin 24 also extends through this channel
of the band are brought together, as shown in Fig.
member 25, as is evident in Fig. 3.
2, it would normally extend less than the for
The third channel member 28 carries a novel
catch mechanism which is adapted to engage and 15 ward side of pinv 24, as the dotted outline of the
member in Fig. ‘2' indicated. However, in the act
interlock with pin 24 and at the same time hold
of hooking the end 3i] around the pin 24 the for
the members under tension against the side of the
ward end of spring member is likewise hooked
bomb which they enter. This catch mechanism
onto the pin 24 and when the elements 26 and
comprises rigid connecting linkage and spring
28 are collapsed at the open member 20, the
tension linkage. The rigid connecting linkage
spring member is stretched and assume the full
comprises two arcuate pivotally connected chan
line position indicated in Fig. 2.
nel shaped elements, one being a rigid hook
The hooked end 30 Of the link element 26 is
shaped member 25, and the other a rigid channel
purposely made su?iciently oversize to accom
shaped lever 28. These channel shaped elements
are inverted with respect to the member 28 and 25 modate for the stretch of the spring member.
As is evident, the stretched spring member 36
are slightly less in width than the latter, in order
places the members l5, l8 and 20 of the band
to ?t or nest the-rewithin, as Fig. 3 shows. rl‘he
under tension around the bomb, and they yield
link 25 is provided on its outer or forward end
ingly press against the sides of the bomb.
with a hook 39, adapted to engage and interlock
Bombs are not usually made to accurate outside
with the pin 24 in the manner shown in Fig. 2.
diameters. As a result the hooking engagement
The lever 28 has its forward end pivotally con
formed by the spring member 36 will allow the
nected to the side walls of the open member 2e by
band to vary its diameter to accommodate such
means of short pivot studs 32—32, as best shown
variations in the circumference of the bombs,
in Fig. 3.
Offset rearwardly from studs 32—32 is a trans 35 while at the same time holding the members
snugly against the bomb to protect the lugs.
verse pin 34 ?tted in the walls of channel shaped
To hold the band around the bomb from acci
lever 28 and extending only as far as the walls of
dentally disengaging, it is preferred to use some
the lever, in order that it may be swung with the
temporary expedient such as a wire 40 which is
lever out of the open member 28. The rear end
looped around the pivot pin 22 and rear end of
of link 26 is pivotally connected to pin 32. As
the lever segment 28 as shown in Fig. 2. When
a result of the pivotal connection of the two ele
it is desired to remove the band from the bomb
ments one to the other, and to the member 22,
this wire connection is broken and the lever is
a toggle-like mechanism is provided for operating
swung up out of open member 21) by inserting
the catch, as a comparison of Fig. 6 with Fig. 2'
the ?ngers under the rear end of the lever and
will show.
exerting an upward pull. This will shift the link
When the two elements 26 and 28 are in col
element 26 forwardly or to the left in Fig. 2,
lapsed position within the open channel member
and clear the hooked end from pin 24. In this
are
26, as
disposed
shown at
in substantially
Fig. 2, the pivotal
the same
axes radial
32 anddis
position the link may be manually grasped and
tance from the center of the band. Since the . pulled out of the open member to completely
disengage the ends of the band.
link 26 which carries. the hooked end 353 is piv
It is preferred, however, to use means which
otally connected with the rearmost pin 34, it
will relieve the operator of the second manual
is in its most retracted position relative to lever
step of pulling the link 26 out of the open chan
28. The relation of this element to the latching
nel member 2!]. This means functions automat
pin. 24 is such that in this position the hooked
ically to releasedly hold the two elements 26 and
end 36 is capable of embracing the pin 22 and
28 for joint swinging movement when they are
locking the ends of the band together. However,
disposed at a relatively acute angle, such as that
if the lever element 28 is pivotally swung out of
illustrated in Fig. 6. In the illustrated embodi
the open member 25! about the studs 32--32, it
ment of the invention this means comprises the
will carry the link element 26 forwardly a dis
provision of projecting portions or ears 42-42
tance su?icient to clear the hooked, end 36 from
on the rear end of the side walls of link 26.
pin 24 and thereby disconnect the end of the
These ears as shown in Fig. '7, are normally
band. In this position link 25 may be swung out
formed to project slidingly laterally outwardly
of the open member 29 to an angular position as
that shown in Fig. 6. In this position the sep (55 from the planes of the side wall of the link and
in the acute angle relationship of Fig. 6 these
arate members l6, [8 and 20-01‘ the band may
ears are engaged under the lower edges of side
be pivotally swung with respect to one another,
walls of the lever element 28. This will releas
and it is readily clear that this is the manner in
edly hold. the two elements 26. and 2B in the
which the band is placed around the bomb and
removed therefrom.
As previously mentioned the band M is pro
vided with novel spring tension means which
tensions the members together and causes them
to hug the sides of the bomb, regardless of varia
tions in the outside diameter of the bomb for
acute angle relationship, except when an extra
force such as that encountered during the latch
ing operation ‘causes theears to bend inwardly
and slide over the inner surface of the side walls
of lever 28.
Fig. 3.
The ears are in this condition in
As a result of the provision of these
2,412,420
5
cars it is only necessary in order to disengage the
band to swing the lever 28 out of the open chan
nel member 20, and forwardly toward the hooked
end 30, until a lessening of resistance to move
ment indicates that the ears have slipped past
and engage under the lower edges of the lever.
Upon little swinging movement of the lever the
link will be swung jointly therewith, thereby dis
end member faces inwardly of the ring assembly,
a yieldable coupling detachably connecting the
free ends of said end members together to form
a circular band and having positive strain lim
iting means associated therewith detachably
connecting the free ends of said end members
‘ together, said two coupling mechanisms sup
relatively small size by folding the two end seg
ments l6 and 20 in overlap-ping relationship in
ported within the channel of the outwardly fac
ing channel member.
2. A bomb protecting band comprising, in com
bination, a plurality of arcuate segmental mem
bers, means pivotally connecting adjacent ends
the center of the band, as shown in Fig. 8.
of said members together to form an open chain
engaging the ends of the band.
In non-use the band may be collapsed to a
In
this position the band occupies approximately
of linked members, each of said members being
channel-shaped in cross section, said members
being arranged so that the channel formation of
all of said members faces in the same direction
with the exception of one end member the chan
readily appreciated. The hooked end 36 affords
nel of which faces in the opposite direction,
a positive connection between the two ends of
the band, supplementing the spring 36 connec 20 means for releasably connecting the free end of
said last mentioned member with the free end
tion, and providing security in case of failure of
of the opposite end member of the linked as
the spring and a, limit as to its stretching.
sembly, said means being disposed within the
What we claim:
channel formation of said end member which
1. A protective band of the character described
faces in the opposite direction to the channel
comprising, in combination, a plurality of arcu~
formation of the other members.
ate segmental channel shaped members pivotally
linked together in the form of a split ring type
JOHN T. PARSONS.
of assembly wherein the channel of one end mem
AXEL V. BROGREN.
ber faces outwardly and the channel of the other
half the space as when it is expanded in circular
formation. The convenience Which this provides
for shipping and storing unused bomb bands is
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