THIS SUMMARY LETTER REPORT DESCRIBES THE WORK DONE UNDER WORK ORDER NO. XIV, TASK ORDER NO. A, DURING THE PERIOD FROM JUNE 28 THROUGH SEPTEMBER 27, 1957.

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78-03642A000700090018-6
• Release Decision: RIPPUB
• Original Classification: S
• Document Page Count: 14
• Document Creation Date: December 22, 2016
• Document Release Date: May 5, 2011
• Sequence Number: 18
• Publication Date: December 30, 1957
• Content Type: LETTER

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C N R D
Fk ~11~~j
December 30, 1957
This summary letter report describes the work done under
Work Order No. XIP, Task Order No. A, during the period from June 28
through September 27, 1957.
Under this program, three modifications for the prototype
rectangular-cross-sectioned container developed under Task Order
No. D were investigated. The modifications included a new type of
lid latch that facilitated opening and closing the containers, a
means of securing the lid to the opened container so as,to prevent
loss of the lid, and a new type of handle bracket. On the basis
of the results obtained, two of the three Task Order No. D containers
were modified; it was not considered worth while to modify the third
prototype container since it was badly deformed as a result of
strength tests conducted on it under Task Order No. D.
On May 29, 1956, Task Order No. D was undertaken to develop
a rectangular-cross-sectioned container which could be used for
underground burial and which was expected to satisfy several require-
ments. These requirements are discussed in detail in our proposal
dated April 23, 1956, and in the Summary Report on-Task Order No. D,
dated April 30, 1957. The effort on that program resulted in three
prototype containers which satisfied the originally indicated require-
ments. During May, 1957, the Sponsor inspected the prototype
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December 30, 1957
containers and suggested that further investigation of selected
design features would be desirable. As a result, Work Order
No. XIV, Task Order No. At was undertaken on June 28, 1957.
The objective of the Work Order No. XIV research program
was to investigate three design features of the prototype container
and to modify the prototype containers to include any of the
desirable resulting design changes.
The first phase of this investigation was concerned with
the removal of the container lid. Although the lid could be easily
inserted and removed when the 0-ring was adequately lubricated, a
lack of lubrication or the break-out friction which occurs with seals
that are static for a long period of time made the lid difficult to
install or remove, respectively.
Initially, mechanisms for prying the lid from the con-
tainer were prepared and evaluated. These prying mechanisms, which
applied a force on the long sides of the lid, were adaptations of
the toggle-type lid latch that was used on the prototype container.
Tests with these mechanisms showed that this type of removal
mechanism would not operate satisfactorily. Subsequent evaluation
studies, however, revealed that, when a prying pressure was applied
to the ends or short sides of the lid, it was relatively easy to
remove the lid from the container. As a result of these studies,
a lever-type latch was designed to operate at the ends or short
sides of the lid. Evaluation of the performance of the new latch
indicated that it greatly facilitated the removal or insertion of the
lid even when lubricant was not used on the 0-ring.
CON ENW
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December 30, 1957
Figure 1 illustrates the new lever-type latch in the
closed position. The latch consists of three parts: the two
prying levers with one end of each hinged to the container flange,
and the toggle fastener which secures the free ends of the levers
when the container is closed. Figures 2, 3, and 4 illustrate
additional details of these parts and also the method of opening
the container. As shown, after the toggle fastener is released,
the levers are pulled toward a vertical position. This action
causes the short lever lips, which extend underneath the lid, to
force the lid out of the container. After the lid is free, the
levers are dropped down at the side of the container, as indicated
in Figure 4.
The same latch can be used to advantage in installing
the lid. This operation is shown in Figures 5 and 6; it will be
noted particularly that a different portion of the prying levers
is used for this purpose.
The second phase of the program was concerned with the
development of a means of holding the lid to the container after
the opening operation, so as to prevent the loss of the lid. A
number of ideas including the use of chain and cable were considered.
However, we decided that the simplest method would be to drill a
3/16-inch-diameter hole in the lips of both the lid and the flange,
to insert a partially bent loop of 1/8-inch-diameter stainless steel
rod through the two holes, and then to bend the loop closed and
DENT
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December 30, 1957
.N45153
Figure 1. Lever-Type Latch in the Closed and Latched Position
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 A .n III I II
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(1r)
December 30, 1957
N4516o
Figure 2. Lever-Type-Latch Opening Operation, With
the Lid in the Partially Opened Position
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December 30, 1957
N45159
Fig o 3. Lever-Type-Latch Opening. Operations
With the Lid in the Open Pooition
I(11 I~
In
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December 30s.1937
N45155
Figure .k, Lever-Type Latch Hanging Down at
the Sides of the Container, With
the Lid in the Open Position
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; ~ 1. `\\i ICJ If\\ L L I
Doc$ermbor 30, 1957
.N45157
Figuro 5. Lever-Typo-Latch Closing Operation, With
the Lid in the Partially Closed Position
11 pl~ 71,
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 ,Ili .I I II
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December 30, 1957
N45158
Figure 6. Lever-Type-Latch Closing Operation,
With the Lid in the Closed Position
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weld the ends using stainless steel electrodes. Figure 7 shows
the lid being supported by the loop.
The third phase of this program was concerned with a
study of the container handle and handle-bracket design. As shown
in Figure 8, the handles of the prototype container were attached
to the container by formed stainless steel strips welded to the
container body. As a result of this bracket design and method of
attachment, there were crevices between the brackets and the con-
tainer, and these might be conducive to accelerated corrosion'of
the container body during underground burial. In order to eliminate
these crevices and the possibility of associated crevice corrosion,
the handle bracket was redesigned. Figure 9 shows the new handle-
bracket design; the bracket is an angle-shaped stainless steel part
with one leg welded to the container body using stainless steel
electrodes and the other leg drilled to receive the handle. This
design eliminates the problem of crevice corrosion at the container
body because weld metal is deposited along all four sides of the leg
that contacts the container and thus no crevices occur.
In accordance with a recent discussion with the Sponsor,
a proposal was prepared that provided for the preparation of 10
rectangular-cross-sectioned containers which would include the modi-
fications described above, and of a set of working drawings. As of
December 19, 1957, this program was initiated under Task Order No. S.
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N45154
Figure 7. The Lid Removed From the Container
and Supported by the Loop
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December 30, 1957
Figure 8. Handle Bracket& on Prototype Container
N40337
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CONFlWENTIAL
December 30;.1957
N45156
Figure 9. Now Haudl*-Bracket Design
CONTIDENTIAL
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HDENTIAL
We would appreciate any comments that you or your asso-
ciates might care to make with regard to the activity under this
Work Order.
Sincerely,
ABW:mjc
In Triplicate
CONMENTI
C
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