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Патент USA US2105865

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Jan. 18, 1938.
`
w. scHwEMLEIN Er Ax.
GIN POLE FOR DERRICKS
Filed oct. 15, 1955
J2
2,105,365
`
I
2 sheets-sheet 1
2,105,865
Patented Jan. 18, 1938
UNITED STATES PATENT OFFICE 'i'
2,105,865
GIN POLE FOR DERRICKS
William Schwemlein and Samuel B. Settle, Park
ersburg, W. Va., assignors to The Parkersburg
Rig & »Reel Company, Parkersburg, W. Va., a
corporation of West Virginia
Application October 15, 1935, Serial No. 45,130
16 Claims.
This invention relates to gin poles for derricks.
In connection with oil Well derricks it has
been the common practice for many years to
provide the upper ends of such structures with
0
gin poles projecting thereabove to facilitate the
hoisting of crown block assemblies, etc., to the
tops of the derricks. The structures customarily
employed for this purpose comprise two spaced
A~frames having a single girt joining them attheir upper ends, such structures being provided
with the necessary bracing. The transverse girt
carries the usual hoisting means for raising the
crown block assemblies, etc., to the top of a
15
derrick.
.
-
Gin poles of the type referred to were wholly
satisfactory in use until the crown blocks in
creased to a size too large to apply beneath the
gin poles. Withv the advent of larger crown
blocks attempts were made to increase the di
20 mensions of the usual form of gin pole but it
was found that this could not be satisfactorily
accomplished.
This was due to the fact-that
the upper ends of the derricks are of standard
size and it is wholly impracticable to change
25 the-entire derrick structure for the purpose of
increasing the size of the upper end thereof
merely to secure greater gin pole clearance. ` `
A further disadvantage of such prior struc
tures lies in the fact that it is the common prac
3O tice to lift a -load to the top of a derrick with
a hoisting mechanism placed a substantial dis
tance from the base of the derrick. 'I'his op
eration transmits an angular force to the gin
pole, and the horizontal component of such force
35
40
4 Ul
50
55
(Cl. 189-21) '
components of the force applied in raising rela
tively heavy loads to the derrick.
Other objects and advantages of the invention
will become apparent during the course of the
following description.
5
In the drawings we have~ shown one embodi-Y
ment of the invention. In this showing,
Figure -1 is a side elevation of the invention
shown applied to vthe upper end of a derrick,
Figure 2 is av plan view of the same,
10
Figure 3 is an enlarged horizontal sectional
view on line 3-'3 of Figure 1,
I
.
Figure 4 is an enlarged fragmentary side ele
vation illustrating the connection between the
gin pole and the derrick structure, and
Figure 5 is an enlarged fragmentary horizontal
5
sectional view on line 5-5 of Figure 1.
Referring 4to Figures l,v 2, and 4, the numeral
I Il designates a conventional derrick structure
as a whole including the usual upwardly con
verging legs II suitably braced with respect to
each other. In Figure l, one of the upper struts
I2 is illustrated as being connected between the
derrick legs. The upper end of the derrick is
provided with the usual water table, as shown. 25
Such water table includes the usual horizontal
supporting members I3 connected between the
derrick legs and extending therebeyond. A pair
of I-beams I4 forming the supporting means for
the crown block assembly is illustrated as being 30
v supported on the upper~ end of the derrick and
connected by transverse beams I5.
The gin pole forming the subject matter of
the present invention comprises a plurality of
has been found to be highly destructive to gin lower legs I6. Derrìcks of the character to Which
poles of conventional types, particularly in view l the present invention relates are customarily pro
of the heavier loads which now must be elevated vided with four legs, and the legs I6 correspond
in number and arrangement to the legs of the
to the tops of derricks.
_
.
derrick. The legs I6 are vertically arranged and 40
An important object of the present inventio
is to provide a gin pole which meets all of the >are spaced apart a distancer greater than the
spacing between the upper ends of the derrick
requirements of modern installations as to hori
zontal and vertical. clearances, horizontal and legs, as clearly shown in Figure 1. The lower
ends of the legs IB lie outwardly of the upper
vertical strength, and lightness.
`
More specifically, an important object of the ends of the derrick legs and project below the
invention is to `provide a novel vtype of gin pole upper ends thereof. The lower end of each leg
I6 is'provided with a pair of brackets I‘I as
which readily may be employed in connection
with conventional derrick structures and which clearly shown in Figures 1, 3, and 5. The legs
I6 are preferably formed of angle section and
provides ample vertical and horizontal clear
ances to facilitate the hoisting and placing of each bracket I1 has one end IB bolted or riveted
as at I9 to one side of each of the legs I6. The
crown block assemblies.
_
A further object is to provide a gin pole which other end 20 of each bracket is adapted to be
secured against one side of the adjacent derrick
is light in construction and which provides sub
leg II. Since the brackets are made of flat
stantially more than the necessary vertical
strength, and rigidity against the horizontal material bent along parallel lines, the ends 20 55
2,105,865
lie inv vertical planes. while the derrick legs II
legs 28, these legs being angularly arranged and
are inclined aspreviously stated. Accordingly,
angular ñllerblocks 2| are arranged behind the
imity to each other. A relatively light top struc
bracket ends 20, and the latter are bolted or
ture of this character has been found highly prac
otherwise secured as at 22 to the derrick legs.
As previously stated _each of the horizontal
1t is subjected, and therefore it is never necessary
members ' I3 projects'beyond the sides of the der
rick, and the legs I6 are arranged outwardly of
and in close proximity to the members I3 as'will
10 be clear from the dotted line showing of the legs
I6 in Figure 2. Angle brackets 23 are employed
for rigidly connecting eachleg I6 to to the ad
jacent member vI3, as clearlyshown in Figures lv
and 4.
Thus it will'be apparent that the brackets l
15 I‘I and 23 serve to rigidly-connect the legs I6
to the derrick at vspaced points. .
having their upper ends in relatively close prox
ticable for supporting the heaviest loads to which
to increase the size- of the parts.
The load is
carried through the legs 28 to the legs I6 whichare suitably braced and made rigid with respect .
to the derrick structure.
The combination of 10
these elements provides far more than the neces
sary strength to sustain all components of the
load, and the novel arrangement of the legs I6
with respect to the derrick is highly advanta
geous.
It will be noted that the legs I6 are rig
The legs I6' are properly braced with respect to
each other. For example, ‘intermediate their
idly supported with respect to the derrick and
are arranged wholly outwardly thereof, thus pro
viding more than the necessary horizontal clear
height,` the legs I6 are connected by- girts 24.
ìîiice for the installation of crown block assem
20 Girts y25 are also connected between the upper
es.
-
20
ends of the legs I6 in a manner to be described,
In actual practice at the present time a thir- and the latter girts are ~connected to the legs I6 teen foot clearance over the water table is re
by braces 26. As shown in Figure 5 each girt 25 quired and the gin poles are sometimes required
is secured to a plate 2'I arranged inwardly there
to- support weights _as great as 12,000 pounds.
25 of and the lower ends of these plates are secured _The present structure is highly eñlcient for carry 25
to the legs I6 outwardly thereof as shown in' Fig \ ing the relatively heavy loads required kby present
ure 1. Thus the girts 25 and the upper ends of day practice, and the vertical legs I6 may be
the legs I 6 are rigidly secured to each other and made as long as desired, within reasonable limits,
these elements have their upper extremities lying without weakening the structure in any way.
30 substantially in a common horizontal plane.
y
A plurality of upper legs_28 is arranged above
the legs I6. The legs 28 correspond in number
The rigidity of thestructure under heavy loads 30
and the equal distribution of the loads permits
the use of relatively light upper and lower legs
and arrangement to the‘legs I6 and have their 28 and' I6, thus minimizing the weight of the
lower ends arranged over the legs I6 as shown in structure as a whole.
Figures 1 -and 2. Bearing plates 29 are secured
One of the‘most important features of the pres
to the lower ends of the legs 28 and are bolted- ent construction is its substantial horizontal
_Orptherwisesecured as at 30 to the girts 25 strength. In actual practice it has been found
(see Figure'ö). The legs 28- converge relatively that more gin pole failures can be traced to the
sharply toward their upper ends and the latter effects of the horizontal components of the load
40 are arranged relatively close to each other as forces than to any other source. In the present
shown in Figures 1 and 2. The upper‘ends of construction it is possible to apply a horizontal
the legs -28 are cut oif in a horizontal plane and force from any direction with adequate resist
each is preferably provided with a bearing plate ance. The pyramid formed by the legs 28 is
3| welded thereto. A relatively heavy cap plate effective to the -point where it Vjoins the legs I6,
and these legs have been found highly rigid in
45 3_2 may be riveted or bolted as at 33’ to the indi
vidual bearing plates 3I and a depending U
operation due to their bracing and their connec
shaped support 33 is carried by the cap plate 32. tion with the legs of the derrick.v As previously
This support is provided to carry thehoisting stated, prior constructions require- much heavier
` means employed for hoisting the crown block, supporting girts at the top 4of the gin poles as
these girts are subjected to increases in loads. 50
50 etc., to the top of the derrick.
In Figure 1 a ladder 34 is illustrated as being Thus the weight of such a structure as a whole
secured -to one side of the' gin pole to facilitate increases out of proportion to the increases in
access Vto the top thereof. This ladder may be the loads to which it is subjected. In the pres
secured in position by suitable brackets 35 con
ent construction the only increases in weight will
.
65 nected wherever convenient.
Abe those due to the lengthening of the legs I 6, 55
The operation of the gin pole will be apparent -the same legssections being employed and merely
from the foregoing description. -As stated above, increased in length where greater vertical clear
the conventional gin poles usually are formed ance is required.
of a pair of A-frames connected at their upper
It is to be. understood that the form of our in
60 ends by- a single girt. These girts are not adapted vention herewith shown and described is to be 60
to sustain heavy transverse loads, and the diiñ
taken as a preferred example of the same and that
culty of utilizing such structures has increased ` various changes in the shape, size and arrange
due to the-heavy' crown block assemblies now be
ment of parts may be resorted to without de
ing used. In order t'o increase the horizontal parting from the spirit of the invention or the
scope of the subjoined claims.
'
65 clearance it has >been necessary to set the A
We claim:
frames further apart thus increasing the lengthof the single girt employed and requiring that
1. 'I‘he combination with a derrick, of a gin
the girt be made quite heavy in order to adapt pole comprising a plurality of lower legs secured
it to support in the center thereof the increasing adjacent their lower ends to the upper end of the
'
70 loads to which it is subjected.
derrick, a plurality of upper legs having their
With the present construction thereis no long lower ends secured to the upper ends of said
single-horizontal element at the upper end- of lower legs and converging toward their-upper
the gin pole which must sustain heavy loads at ends, and supporting means carried by the upper
its center. 'I'he present construction efficiently -ends of said upper legs.
75 distributes the load through a plurality of upper
2. The combination with a derrick, of a gin'75
3
2,105,865 i
pole comprising a plurality of lower legs secured ing a plurality of polygonally arranged legs sup
adjacent their lower ends to the upper end of
the derrick, a plurality of upper legs having their
lower ends vsecured to the upper ends of said>
Ul lower legs and converging toward their upper
ends, a member rigidly fixing the upper ends of
said upper legs and supported thereby, and de
pending supporting means carried by said mem
ported adjacent their lower end portions with
respect to the upper end of the derrick, the poly
gon defined by said gin pole legs being greaterin size than the polygon defined by the derrick
legs'in the horizontal plane of the upper ends
thereof, a plurality of 4upwardly converging upper
5
legs each having its lower end supported by the v upper end of one of the first named legs of the,
3. The combination with a derrick, of a gin gin pole, and supporting means connecting .th v10
ber.
’
,
pole comprising a plurality of substantially verti
cal lower legs secured adjacent their lower ends
to the upper end of the derrick, a plurality of
upper legs corresponding in number to the lower
upper ends of said upper legs.
10. The combination with a derrick, of a- gin
pole comprising a plurality of substantially verti
cal lower legs secured adjacent their lower-ends
legs and each having its lower end supported by ' tothe upper end of the derrick, a plurality of
the upper end ofl one of said lower legs, said upper legs corresponding in number'tol thev lower
upper _legs converging toward their upper ends legs and each having its lower end supported by
and having such upper ends arranged in` rela
tive proximity, and supporting means carried by
the upper ends of said upper legs.
‘ , :
4. The combination with a derrick, of a lgin
pole comprising a plurality of legs corresponding
in number and relative .position to the derrick
legs and having their lower end portions ar
25 ranged outwardly of and secured to the upper
end portions of the derrick, and supporting
v means carried by the top portion of the gin pole.
5. The combination with a derrick, of _ a gin
pole comprising a plurality of legs corresponding
30 in number and relative position to the derrick
legs and having their lower end portions ar
ranged outwardly of and secured to the upper
end portions of the derrick, a plurality of upper
legs having their lower ends corresponding in
number and relative position and secured with
respect to the upper ends of said- ñrst named
legs, and supporting means carried by the top
portion of said upper legs.
'
_
the upper end of one of said lower legs', said up
per-legs converging toward their upper ends and
4having such upper j ends arranged in relative 20
proximity, a bearing cap overlying _and supported ‘
by the upper ends of said upperV legs, and de
pending supporting means carried by said bearing
i Cap.
,
11. The combination with a derrick having a 25
plurality of legs, of a gin pole comprising a plu
rality of vertically- arranged lower legs corre
sponding in number to the arrangement of the
legs of thederrick and having their lowerv ends
arranged outwardly of the upper ends of _the 30
derrick legs, bracket means secured between the
lower ends -of said lower legs and said derrick
legs below the upper ends of the latter, means
for anchoring said- lower legs with respect to
the upper ends of said derrick legs, a plurality 35
of upwardly converging upper legs each having
its lower end corresponding in position _to and
arranged over the upper end of one of said
6. The combination with a derrick, of a gin
40 pole comprising a plurality of legs having their
lower end portions arranged outwardly of and
lower legs and secured with respect thereto, and
supporting means carried by the upper ends of 40
said upper legs.
~12. The combination with a derrickr having a
secured to the upper end portionsof the derrick,
a plurality of upwardly converging .upper legs _ plurality of legs, of a gin pole comprising a plu
each having -its lower end supported by the upper rality of vertically arranged lower legs corre
45 end of one of said ñrst named legs, and support
spending in number to the, arrangement of the 45
ing means carried by the top portion of said legs o_f the derrick and >having their lower ends
upper legs.
'
arranged outwardly of the upper ends of the
'7. The combination with a derrick having
polygonally arranged legs, of a gin pole com
50 prising a plurality of correspondingly polygonally
arranged legs supported adjacent their lower
vend portions with respect to the upper end -of the
derrick, the polygon defined by said gin pole legs
being greater in size than the polygon defined
by the derrick legs in the horizontal plane of
the upper ends thereof, each gin pole leg having its lower end arranged adjacent the upper
end of one leg of the derrick.
'
8. The combination with a derrick having
derrick legs,- bracket means secured between the
lower ends of said lower legs and‘said derrick
legs below the upper ends of the latter, means for 50
anchoring said lower legs with respect to the
upper ends of said derrick legs, a plurality of up
wardly converging upper legs each having its
lower end corresponding in position to and ar
ranged over the upper end of one of said lower 55
legs and secured with respect thereto, the’upper
ends of said upper legs being arranged in rela
tive proximity and terminating in a common hori
zontal plane, a horizontal bearing cap carried
60 polygonally arranged legs, of a gin pole compris
by the upper ends of said upper legs, andra de 60
ing a plurality of correspondingly polygonally ' pending support carried by said bearing cap.
arranged legs supported adjacent their lower end
13. The combination 'with a, derrick having a
portions with respect to the upper end of the plurality of legs, comprising a gin pole having a ,
derrick, the polygon defined by said gin pole legs
being greater in size than the polygon defined by
the derrick legs in the horizontal plane of the
upper ends thereof, a plurality of upper legs
supported at their lower ends with respect to the
upper ends of the first named legs of the gin pole,
70 the upper ends of said upper legs being arranged
in closer proximity to each other than the lower
ends thereof, and supporting means carried by
pluralityfof vertically arranged lower legs cor
responding in number and relative position to 65
the upper ends of the legs of the derrick and hav
ing their lower end portions-arranged outwardly
of the upper end portions of the derrick legs,
bracket means connected between the lower ends
of said lower legs and the derrick legs below the 70
upper ends thereof, securing means connected
between said lower legs and the upper ends of
the top portion of said upper legs.
the derrick legs, a plurality of upper legs each
9. The combination with a derrick having having its lower end arranged directly over the
75 polygonally arranged legs, of a gin pole compris vupper end of one of said lower legs and supported 75
.
2,105,865
‘ 4
thereon, said upper legs converging toward their
upper ends, means for anchoring the upper ends
of said upper legs with respect to each other, and
supporting means carriedl by said anchoring
`
means.
14. The combination with a derrlck having a
plurality of rectangularly arranged legs, of a gin
pole comprising a plurality of vertical lower legs
corresponding in number and relative arrange
10 ment to the derrlckA legs and spaced apart a dis
ance greater' than the distance between the up
per ends of the latter, the lower end portion of
each lower leg being arranged outwardly of the
upper end portion of each derrlck leg, bracket
means connecting the lower end of each lower leg
to the corresponding leg of the derrick below the
upper end thereof, securing means connected be- _
tween each lower leg and the upper end of each
derrlck leg, bracing means for said lower legs,
a plurality of upper legs corresponding in num
ber to said lower legs and having their lower ex
' tremities arranged directly thereabove, a bear
ing plate carried by the lower end of each upper
leg and supported on the'upper end of one of
said lower legs. said> upper legs converging up
wardly and having their upper ends arranged in
relative proximity, means for anchoring the up
per ends of said upper legs with respect to each
other, and depending supporting means carried
by said anchoring means.
l5. The combination with a derrlck~ having
polygonally arranged legs, of a gin pole compris
ing a plurality of correspondingly polygonally ar
ranged legs, the lower end of each giri pole leg,
with respect to the axis of the derrlck, being ar
ranged radially outwardly of the upper end por
tion of one of the derrick legs and secured with 10
_respect thereto, and supporting means carried
by the upper ends of said gin pole legs.
16. The combination with a derrick having"
polygonally arranged legs, of a gin pole compris
ing a plurality of correspondingly polygonally ar 15
ranged legs, the lower end of each gin pole leg,
with respect to the axis of the derrlck, being ar
ranged radially outwardly of the upper end por
ticn of one of the derrick legs, means for anchor
ing the gin pole legs to the derrlck legs substan 20
tially in the horizontal plane of the upper ends
of the latter, means for securing the lower ex
tremity of each gin pole leg to the adjacent der
rlck leg, and supporting means carried by the
25
upper ends of said gin pole legs.
WILLIAM SCHWEMLEIN.
SAMUEL B. SETTLE.
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