close

Вход

Забыли?

вход по аккаунту

?

Патент USA US3036533

код для вставки
May 29, 1962
N. J. LEA
EXPLOSIVE ASSEMBLY
Filed July 10, 1958
Tlc+L
//3
TJEII.Z: -
3,036,523
3,636,523
Patented May 29, 1962
2
3,036,523
Norman J. Lea, Bellaire, Tex., assignor to Texaco Inc,
In addition the assembly includes complementary groove
EXPLGSIVE ASSEMBLY
means on the outside surface of said container. The said
lug and groove means are so constructed and arranged
a corporation of Delaware
that said sleeve may be coupled to said container by in
sertion of said container within said sleeve longitudinally
Filed July 10, 1958, Ser. No. 747,643
6 Claims. (Cl. 102-24)
This invention is concerned with explosive assemblies
in general, and more speci?cally is particularly concerned
with an explosive assembly structure that is especially
adapted for use in seismic work.
In seismic exploration work, it is common practice to
employ charges of explosive which are sufficiently large
so that more than one stick of dynamite, or other high ex
until said lug and groove means are at the same longitu
dinal location, and then by rotating said container ninety
degrees relative to said sleeve.
A preferred embodiment of the invention is described
below in more detail and is illustrated in the drawings, in
which:
FIG. 1 is a side elevation, illustrating a string of dyna
mite sticks made up into a unitary charge;
FIG. 2 is a fragmentary, enlarged side elevation, partly
plosive, is employed. Under these circumstances a string 15 broken away in section and illustrating the structure of a
of explosive charges are fastened together and detonated
sleeve according to the invention, 'but viewed at ninety
. simultaneously as a single charge. Such a string of ex
degrees relative to the FIGURE 1 view.
plosives must be made up at the surface of the ground
FIG. 3 is an enlarged, fragmentary side elevation, il
prior to or during, lowering of the charge into a shot
lustratiing the structure of one end of a stick of explosive
hole, or other cavity that has been prepared in the surface 20 formed in accordance with the invention, and also viewed
of the earth to receive the charge. When a number of
at ninety degree relative to the FIGURE 1 view.
sticks of explosive are fastened together thus to make up
FIG. 4 is a somewhat less enlarged side elevation, il
a substantial charge for exploding underground, problems
lustrating a stick of explosive formed annd constructed in
have been encountered by reason of the weight of the
accordance with the invention, and viewed at the same
separate sticks of dynamite that becomes cumulatively 25 side or one hundred and eighty degrees from the FIG
quite high and exerts strong tensile forces between sticks
URB 1 view;
at the upper end of the complete string of explosive
FIG. 5 is a transverse section view taken at the lug
charges. Heretofore, various arrangements and ideas
structure of a sleeve and including an end view of a
have been suggested for overcoming these problems.
stick of explosive located concentrically within the sleeve;
Among such suggestions is included the wrapping of each 30 and
stick of explosive with a helical thread structure, and
then providing a sleeve having female thread structure on
the inside thereof to match the thread on the outside of
the charge. However, such an arrangement had a bad
FIG. 6 is a transverse sectional view similar to FIG. 5,
but with the stick of explosive turned into locking en
gagement with the sleeve, and including a pair of cap
wires within the sleeve.
Referring to FIG. 1 it is pointed out that there is il
tendency to become loosened, or unthreaded, after the 35
charge string had been made up. Consequently adjacent
lustrated a string of explosive containers 11 (sticks of dy
sticks of explosive would become separated from one an
namite) that are fastened together in abutting relation
other, and sometimes one or more of the sticks would fail
ship by means of a plurality of sleeves 12 into which the
to detonate.
containers 11 are inserted. There is also shown, a pair of
Consequently it is an object of this invention to provide 40 cap lead wires 13 that extend down inside of the sleeve
structure for an explosive assembly, which overcomes the
12, as will be more fully explained below.
above indicated di?iculties.
Referring to FIGS. 2 through 6, the details of the
Another object of this invention is to provide apparatus
structure involved in the containers and the sleeves,
will be pointed out.
such that a string of explosives may be put together quick~
ly and easily, in addition to the fact that adjacent sticks
It is contemplated that the containers 11 and the sleeves
of explosive are held together in sung abutment, even
12 will be constructed of appropriately heavy paper that
under loading tension.
is coated with wax for moisture proo?ng. With such
Another object of the invention is to provide a sleeve
construction the shapes can be formed by pressing with
element for use with sticks of explosive, such that a
dies, or in some other feasible manner, prior to the coat
plurality of sticks of the explosive may be fastened to
ing with wax. The wax coating then adds stiffness, espe
gether by means of the sleeve with the ends of the explo
cially to the sleeves. Of course the material employed is
sive sticks held securely in close abutment to one another,
not necessarily limited to paper. However, an economical
and then they may be unfastened again if desired.
commercial form for sticks of dynamite is in paper wrap
Another object of this invention is to provide a sleeve
pers, or containers.
structure for connecting a plurality of sticks of explosive 55 It is to be noted that the containers 11 and the sleeves
together, which has structure such that the wire leads for
12 are both elliptical in their overall cross-sectional con
the detonator may be protected within the sleeve as the
?guration. Toward each end of every container 11 there
string of explosive is made up and lowered in the hole.
is located, diametrically opposed to one another, a pair
‘ Another object of this invention is to provide a sleeve
of substantially identical grooves ‘16. These grooves 16
structure for connecting a plurality of sticks of explosive 60 each is symmetrically located on the surface of the con
together, so constructed that the sleeves may be shipped
tainer 11 about the major axis thereof. Furthermore,
concentrically located about sticks of explosive.
these grooves 16 are each formed so as to be deepest at
Brie?y the invention is concerned with an explosive
the center and tapered outward therefrom to become ?ush
assembly which includes an elongated container filled
with the surface of the container 11.
with explosive material. The said container is elliptical 65 Located on each of the sleeves 12, so as to extend in
in overall cross-sectional con?guration, and the explosive
wardly from the inside surface thereof (see FIG. 5 ), there
assembly includes a sleeve for connecting two of said con
is a pair of lugs 20. These may be formed by being
tainers together in end to end abutting relation. The said
pressed in after the sleeve has been ?rst wrapped, or
sleeve is elliptical and has the minor axis inside diameter
otherwise formed as indicated above. Consequently
thereof, substantially equal to the maximum outside di 70 there are indentations on the outside surface of the sleeve,
ameter of said elliptical container. The assembly also
where each lug 20 is located. Each individual lug 20 is
includes lug means on the inside surface of said sleeve.
symmetrically located about the minor axis of the sleeve
3,036,523
3
4
12 and is situated diametrically across from the other.
the charge string, as a string of explosive is made up.
There ‘are a set of these lugs 20 near each end of each
sleeve 12 so as to be accommodated by the corresponding
Furthermore, the cap leads 13 are protected by being lo
cated inside the sleeves 12, as the string is made up. This
grooves 16 of a container of explosive 11. Furthermore,
the location of the lugs 20 is such that the positioning of
is readily accomplished by. reason of the elliptical con
?gurations of the container 11 and the sleeve 12, so that
two containers 11, one from either end of a sleeve 12,
will cause the containers 11 to be abutted in snug contact
there is ample space for the cap leads 13 when the con
with one another, at the adjacent ends thereof.
with the sleeve 112.
' It will be noted that there is a protuberance 23 (FIG.
tainer 11 has been rotated into interlocking relationship
Another advantage that may be gained by this inven
2) that is located at the center along one edge of each 10 tion is that, as a string of explosive charges is made up
of the lugs 20. Similarly, along a corresponding edge
and prepared for loading in a shot hole, an additional
of each of the grooves 16, there is an indentation 25
sleeve 12 may be employed at the upper end of the
string and it will act as a protector for, and aid in hold
(FIG. 3).
One edge of each of the grooves 16 is ?ared outward '
ing the loading pole guide, when the string of charges
from the center of the groove, as indicated by reference 15 is attached to the loading poles for loading in the shot
numbers 28 and 29 (FIG. 3). These ?ared edges 28
hole.
and 29 of each groove 16, are preferably located on the
It will observed that in addition to the ease with which
edge that contains the indentation 25. This structure
a string of charges may be made up, by the use of struc
provides for aiding in the alignment of the lugs 2%)‘ with
ture according to this invention; the same string may be
the grooves 16, when the sleeves 12 are being coupled, 20 unmade, if desired, by merely reversing the process and
or interlocked with the containers 11.
twisting the containers 11 back or forward ninety degrees
It will be appreciated that the dimensions illustrated
relative to the sleeves 12 in which they are attached.
in the drawings are exaggerated for the purposes of illus
This has a great advantage in that the size of a charge
tration. However, within practical limits, the major
may be'changed after it has been made up. At the same
diameter outside dimension of the container 11 is at least 25 time the string of charges when made up is securely held
equal to the minor diameter inside dimension of the
in lengthwise abutment and consequently a complete
sleeve structure ‘12, as clearly illustrated in FIG. 6.
detonation of the entire string of charges is insured.
It will be appreciated that other shapes than elliptical‘ '
It is pointed out that as a string of charges is made up,
might be employed without ‘departing from the spirit of
the cap leads 13 may be readily inserted inside of the
this invention, so long as an out-of-round con?guration 30 sleeves 12, by merely holding the leads 13 close alongside
is employed. Among the bene?ts that are gained from‘
of each container 11 on the ?attened sides thereof, i.e.
the use of an out of round structure is includedrthe
along the minor axis. In this way, there will be suf?cient
ability to readily insert a container 11 within one of the
room within the sleeve 12 to receive the charge in addition
sleeves 12 with clearance therebetween, as is clearly
to the cap leads 13, and then as the interlocking connec
illustrated in FIG. 5. This means that in addition to ease 35 tion between sleeve 12 and container 11 is effected, the
in handling during the making up of a string of ex
cap leads 13 will move into the space formed between
plosive charges prior to detonation, the shipping of the
sleeve 12 and container 11 so that no binding effect will
sleeves 12 may be carried out in a space saving, compact
be had.
‘
manner by inserting a sleeve 12 around each container 11,
It may be noted again that the dimensions shown in the
prior to shipment thereof. Among the advantages thus 40 drawings are not to scale, and in practical application
gained is the ability to ship the sleeves 12 in a secure
the sleeves 12 will probably form an easy sliding ?t
manner, saving space and at the same time avoiding
around the containers 11 when they are aligned with major
’
.
and minor axes coinciding. But, the sleeves probably will
Among additional advantages which may be gained
be somewhat sprungout of their original shape as the
by this invention, is the ability to provide an easy to op 45 containers 11 are rotated ninety degrees within the sleeves
erate, and secure interlock structure, for holding a pair
12.
of containers in snug abutting relation. ,Thus the assem
While a particular embodiment of the invention has
bly of a string of charges may be carried out by merely
been described in considerable detail in accordance with
‘damage to the sleeves.
inserting a container 11 into one end of a sleeve 12 until
the grooves 16 are in longitudinal alinement with the
lugs '20, and then by rotating the container "11 relative to
the sleeve 12‘, through ninety degrees, until the protuber
ance 23 matches with and engages in the indentation 25.
It will be noted that the ?ared edges 28 and 29 on each
groove 16, act to provide a longitudinal movement of the
container 11 toward the center of the sleeve 12. This
forces the second container 11 to. be inserted in a coupling
sleeve 12, to press against the container already in the
sleeve.
‘
the applicable statutes, this is not to be taken as in any
way limiting the invention, but merely as being descrip
tive
thereof.
a
.
i
What is claimed as the invention is:
1. An explosive assembly including at least two elon
gated containers ?lled with explosive material, said con
tainers being substantially elliptical. in transverse cross
sectional con?guration, with a maximum and minimum
' transverse dimension, a sleeve for connecting two of said
containers together in end to end abutting relation, said
sleeve being open and having dimensions such that the
In FIG. 4 it will be observed that there is illustrated’ 60 minimum inside transverse dimension is not more than
an indicating line 33, applied to the container 11 on the
outside surface thereof so that it will be readilyr ob
servable when the container 11 .has been inserted intoa
the maximum outside transverse dimension of said con
tainers, ?rst symmetrical interlock means on the outside
surface of said containers, and second complementary
sleeve ‘12 for the desired distance. This indication ‘33
might take any feasible form. It is most helpful when 65 symmetrical interlock means on the inside surface of said
sleeve for cooperating with said ?rst interlock means for
the ?rst of two containers 11 is inserted into a sleeve 12.
engagement from either direction of rotation, whereby
Thus a container ‘11 will be inserted in a sleeve 12, with
said containers may be locked to said sleeve to prevent
their major and minor axis in line with one another, until
relative longitudinal movements therebetweenv after said
the edge of the sleeve 12 lies adjacent to the indicator 33
on the container 11. Then the container and sleeve may 70 ?rst and second interlock means have been engaged.
‘2. An explosive assembly including at least two elon
be rotated ninety degrees relative to one another, for lock
gated containers ?lled with explosive material, said con
in-g engagement, since the lugs 20 will be at the same lon
tainers being elliptical in outside transverse. con?guration,
gitudinal location as the grooves 16.
.
.
a sleeve for connecting two of said containers together in
The structure involved in this invention eliminates the
need for applying half hitches with the cap leads around - end to end abutting relation, said sleeve being open and el~
3,036,523
5
liptical in transverse con?guration and having the minor
axis inside diameter thereof not greater than the maximum
side surface of said sleeve, said bands being located sym
metrically about the minor axis of said sleeve, a protuber
diameter of said elliptical containers, lug means on the in
side surface of said sleeve, complementary transverse
ance centrally located on an edge of each of said hands,
a pair of transverse diametrically opposed arcuate band
groove means on the outside surface of said containers,
said lug and groove means being so constructed and ar
shaped grooves in said containers, said grooves being
recessed radially inward from and tapering outward into
the surface of said containers, said grooves being located
symmetrically about the major axis of said containers,
ranged that said sleeve may be coupled to said container
‘by insertion of said container within said sleeve longitudi
at least one edge of said grooves being ?ared outward
nally until said lug and groove means are at the same lon
gitudinal location and rotating said container ninety de
10 from the center line of the groove to facilitate registra
tion of the grooves with said bands, and an indentation
grees relative to said sleeve.
centrally located on a corresponding edge of said grooves
3. An explosive assembly including at least two elon
for registration with said protuberance when said sleeve
gated containers ?lled with explosive material, said con
and said containers are in interlocked registration with one
tainers being elliptical in outside transverse con?guration,
a sleeve for connecting two of said containers together 15 another.
5. An explosive assembly in accordance with claim 4
in end to end abutting relation, said sleeve being open
further including indicator means on said "containers for
and elliptical in transverse inside con?guration, a paifof
indicating the amount each said container is to be inserted
diametrically opposed lugs extending inwardly from the
Within said sleeve to bring said bands and grooves in regis
inside surface of said sleeve and located at the extremities
of the minor axis thereof, a pair of diametrically opposed 20 tration prior to rotating said sleeve relative to said con
tainer to‘ cause the interlocking registration thereof.
transverse grooves on the surface of said container at the
6. An explosive assembly in accordance with claim 5
major axis thereof, said lugs and grooves having comple
wherein said container and said sleeve are constructed of
mentary structure whereby said container may be inserted
cellulosic material.
in said sleeve with the major axis in alignment until the
lugs and grooves are located longitudinally at the same 25
place and then said container may be rotated ninety de
grees to engage the lugs in the grooves.
4. An explosive assembly including at least two
elongated containers ?lled with explosive material, said
containers being elliptical in outside transverse con?gura
tion, a sleeve for connecting two of said containers to
gether in end to end abutting relation, said sleeve being
30
References Cited in the ?le of this patent
UNITED STATES PATENTS
878,818
1,917,540
2,224,565
2,403,488
open and elliptical in transverse inside con?guration, a
2,413,862
2,415,422
pair of transverse diametrically opposed arcuate bands
extending radially inward from and tapering into the in
2,429,079
Miller et a1. __________ __ Feb. 11,
Pearsall ______________ __ July 11,
Flude _______________ __ Dec. 10,
Bennett _______________ __ July 9,
1908
1933
1940
1946
Cohan ________________ __ Jan. 7, 1947
Fogg ________________ __ Feb. 11, 1947
Smith _______________ __ Oct. 14, 1947
Документ
Категория
Без категории
Просмотров
0
Размер файла
539 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа