US2671537A - Derrick mounting for portable drilling and servicing rigs - Google Patents
Derrick mounting for portable drilling and servicing rigs Download PDFInfo
- Publication number
- US2671537A US2671537A US35666A US3566648A US2671537A US 2671537 A US2671537 A US 2671537A US 35666 A US35666 A US 35666A US 3566648 A US3566648 A US 3566648A US 2671537 A US2671537 A US 2671537A
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- United States
- Prior art keywords
- derrick
- chassis
- truck
- hinge
- legs
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/02—Drilling rigs characterized by means for land transport with their own drive, e.g. skid mounting or wheel mounting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/18—Control systems or devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C2700/00—Cranes
- B66C2700/06—Cranes in which the lifting movement is done with a hydraulically controlled plunger
- B66C2700/062—Cranes in which the lifting movement is done with a hydraulically controlled plunger mounted on motor vehicles
Definitions
- Portable drilling and servicing rigs are commonly employed in petroleum production for the drilling and servicing of wells.
- Such rigs are usually transported on trucks or trailers which carry a mast or derrick which may be positioned on the truck and erected on the drilling site.
- These masts are usually composed of one or more sections, usually two, in such form that the upper section may be telescoped into the lower section.
- the derrick When the derrick is to be transported it is collapsed onto the truck or trailer.
- the telescoped hinge section may be withdrawn or extended from the lower section to give a mast or derrick of desired height.
- Prior art construction of this type of rig is illustrated by the White Patent No. 2,204,713.
- the derrick in its rest position upon the truck, is positioned with its upper end, that is, the end carrying the crown block, over the forward end of the truck, and the bottom legs of the derrick, that is, the portion which is positioned on the ground, protrudes beyond the end of the truck.
- the derrick in such construction, in order to be erected, must be pivoted about a hinge point which is positioned beyond the end of the truck. This is provided by means of a truss mounted on the end of the truck and the derrick is hinged upon said truss with the hinge point beyond the end of the truck.
- the erecting mechanism consists of a link which is connected near the bottom end of the derrick and in this fashion the erecting mechanism pulls on the end of the derrick and rotates the derrick about the hinge point.
- the derrick may weigh as much as 9 to 10 thousand pounds and that the hinge point is several feet rearward of the rear axle and the end of the derrick is beyond that, it will be noted that when the derrick starts to erect a lever load of considerable magnitude is exerted about the rear axle and that the only countervailing force is the weight of the truck itself. For this reason it has been found necessary in the construction of the prior art, as a measure of safety, to anchor the front of the truck before starting to erect the derrick.
- I mount the derrick upon a pivot point which is forward of the front axle and over the cab. I also mount the erecting mechanism so that the reactive thrust imposed, when the derrick is lifted off its rest position and rotated about its pivot point, is directed to the rear of the front axle but in front of the rear axle. As a result of this arrangement, the reactive thrust and the static load imposed on opposite sides of the front axle are in balanced arrangement, thus imposing no tilting force about any of the axles of the truck.
- the driver in his cab position where he has, as is conventional in trucks, all of the steering and driving controls, can see the derrick-moving into position at all times and thus may, if he so desires, readjust his position with great facility. Because of the fact that the cab is positioned adjacent the front wheels, where also the derrick is provided, the driver has an unobstructed view of the location where the derrick is to be erected. The improved visibility imparts a surer control by the driver who is in control of the lifting mechanism.
- Fig. 1 is a side view of the truck, partly schematic, showing the position of the derrick in rest position and in partly erected position in dotted line;
- Fig. 2 is a plan view of Fig. 1 with the parts removed for clearer illustration;
- Fig. 3 is a fragmentary detail, partly broken away, of the front end of the truck with the derrick shown in erected position;
- Fig. 4 is. a front View of Fig. 3;
- Fig. 10 is a section taken along line Ill-ll] of s Fig. 6;
- Fig. 11 is a section taken alongline vI
- Fig. 12 is a section taken alongline-I2'-l2 ;of'
- the truck I has an enclosed body 2. Slots 3,
- the truck carries itsmain motive power as an engine positioned in the rear of the truck in engine 4 compartment 5.
- truck-carries enclosed in the body; winches B and- 'i "and suitable power transmitting mechanism, change *speedmechanism; controls, etc. It has rear wheels! and front wheels?) and a cab l which-is positioned' at the forward end of-the truck.
- cab l which-is positioned' at the forward end of-the truck.
- the chassis is composedof alongi tudinal frame member H and-rear cross member 12 and front cross member-l3; positioned midwayunder the cab and in front: of-theforward front wheels 9.
- the-front cross member l3'and withini'the cab lfl are two-columns l4 positioned oneyonr each side ofthe cab. These carry a cross member ;l5-positioned underneath the roof of" the -cab; Two-bearings l6 are positioned through the roof of the cab upon the member I5.-
- the jack-28 is 'hingedly mounted at 21 uponpins 21 on the longitudinal members II and beneaththe brackets 26:
- the member eii ends ina ball' and. socketjoint 38 to whichit is connected atthe-foot. 35.
- the member 31 is connected by a link 39 which is pivotally connected at 40 to the underneath side of the longitudinal main frame member H by a removable pivot pin.
- the truck may be driven into the derrick site. Itwill' be observed that the driver has full view of the site and can spot his truck accurately. It will be observed that no equipment associated with the truck is positionedin front of the driver;
- The'foot' of each jack- is contacted against the ground by rotating'the'jack legs 36,thus wedging the truck in position.
- the jack '2l' is then extended,- thederrick rotating-off its cradle onsupports20 and pivoting around the pivot l'l into vertical position; as shown in Figs. 3 and 4.
- the legs 4! are-screwed down until they restinpositionupon blocks 42 suitably provided.
- the load-on I3 acts with the "load on- 26 toproduce a bending moment in the longitudinal frame member H between these points-,whichbending load is transmitted to the axle and toth'eground: Sincethe-load on 26-is carried'onthe member -H between therearand front axles and its moment is added to the weight ofthetruck andis-greater-than the moment oi the static'load -on l3, there is no tendency of the truck to tip and a stable platform for the drilling derrick-is presented even without the aid of the jack 28';
- a portable derrick comprising a chassis, front wheels mounted on an axle positioned adjacent the front end of the chassis, rear wheels mounted on an axle positioned adjacent the rear end of the chassis, a drivers position with steering and motive power controls positioned adjacent the front end of said chassis and extending forward of the front axle, a collapsible and extensible derrick pivotally mounted on the chassis to move from a rest position on said chassis With the top end of the derrick positioned rearwardly of said chassis and the bottom of said derrick bein positioned on said chassis toward the front end of said chassis, spaced two front and two rear legs for said derrick, cross bracing between said legs with a free area between a portion of the rear legs, said derrick comprising a lower section and an upper section, means for moving said upper section relative to said lower section to extend and to collapse said derrick, a hinge on said derrick positioned near the bottom end of said derrick, said hinge also positioned on said chassis intermediate the forwardmost limits of said chassis and the front axle and above said drivers position, and means for
- connection being positioned on said chassis between said front and rear axles, lower portions of said legs being spaced apart transversely with respect to said chassis a distance greater than the transverse extent of said drivers position, and said lower leg portions and said hinge being located with respect to the longitudinal axis of said chassis to cause a portion of the drivers position to enter said free area and the lower rear leg portions to straddle said drivers position when the derrick is in said erect position.
- a portable derrick comprising a chassis, front wheels mounted on an axle positioned adjacent the front end of the chassis, rear wheels mounted on an axle positioned adjacent the rear end of the chassis, a drivers position with steering and motive power controls positioned adjacent the front end of said chassis, a collapsible and extensible derrick pivotally mounted on the chassis to move from a rest position on said chassis with the top end of the derrick positioned rearwardly of said chassis and the lower end of said derrick being positioned on said chassis toward the front end of said chassis, spaced two front and two rear legs for said derrick, cross bracing between said legs, said derrick compris in a lower section and an upper section, means for moving said upper section relative to said lower section to extend and to collapse said derrick, a hinge on said derrick positoned adjacent the lower end of said derrick, said hinge also positioned on said chassis intermediate the forwardmost limits of said chassis and the front axle and above said drivers position, and means for rotating said derrick about said hinge to an erect position adjacent the front end of said chassis with
- a portable derrick comprising a chassis, front wheels mounted on an axle positioned adjacent the front end of the chassis, rear wheels mounted on an axle positioned adjacent the rear end of the chassis, a drivers position with steering and motive power controls positioned'adjacent the front end of said chassis, a motive power unit positioned on said chassis rearward of said drivers position, winches positioned on said chassis rearward of said drivers position, a derrick pivotally mounted on the chassis to move from a rest position on said chassis with the top end of the derrick positioned rearward of said chassis behind said cab, the bottom of said derrick being positioned on said chassis toward the front end of said chassis, a hinge on said derrick positioned near the bottom end of said derrick, said hinge also positioned on said chassis intermediate the forwardmost limits of said chassis and said front axle and above said drivers position, and means for rotating said derrick about said hinge to an erect position adjacent the front end of said chassis, said derrick including spaced two front leg members and two rear leg members, cross bracing between said leg members, said derrick
- said. derrick about said .hinge to a-n erect position. adjacent the front :end of isaid chassis, said means. including a rotation power transmittingmemberconnected to saidderrick atapoint on said. derrick spacedafrom said. hinge, saidetransmittingv member transmitting .rotative .power .to .said Tde'r.-.-
- -A portable derrick comprising a chassis, front wheels mountedon an'axle positioned ad jacent .the frontend of'the chassis. rear wheels mounted on an axle positioned adjacent the rear end of the chassis, a'drivers position with steer-' ing and .motive power controlspositioned adja-.-' cent the front end of said chassis, a motive power unit.
Description
March 9, 1954 J. MOON DERRICK MOUNTING FOR PORTABLE DRILLING AND SERVICING RIGS 4 Sheets-Sheet 1 Filed June 28, 1948 JNVENTOR. 11h MES MOO N flTTORNEY.
March 9, 1954 J M DERRICK MOUNTING FOR PORTABLE DRILLING AND SERVICING RIGS 4 Sheets-Sheet 2 Filed June 28, 1948 IN VEN TOR. rfimzs 5 Mo ON By Z I ATTORNEY.
DERRICK MOUNTING FOR PORTABLE DRILLING AND SERVICING RIGS Filed June 28, 1948 4 Sheets-Sheet 3 JNVENTOR. (JAMES Moan @1- TORNE y.
DERRICK MOUNTING FOR PORTABLE DRILLING AND SERVICING RIGS Filed June 28, 1948 4 Sheets-Sheet 4 IQ o N =1 P Q a I f l T w I m E j N- Q. NN N M a) I? m a w m m w l\ h 3% m N N R10 N n INVENTOR. JAMES MOON ATTORNE Patented Mar. 9, 1954 DERRICK MOUNTING FOR PORTABLE DRILLING AND SERVICING RIGS James Moon, Altadena, Calif., assignor to Western Oil Tool & Engineering Co. Inc., Hollydale, Calif., a corporation of California Application June 28, 1948, Serial No. 35,666
Claims.
Portable drilling and servicing rigs are commonly employed in petroleum production for the drilling and servicing of wells. Such rigs are usually transported on trucks or trailers which carry a mast or derrick which may be positioned on the truck and erected on the drilling site. These masts are usually composed of one or more sections, usually two, in such form that the upper section may be telescoped into the lower section. When the derrick is to be transported it is collapsed onto the truck or trailer. Upon erection of the lower section, by rotation of this section about a hinge point on the truck, the telescoped hinge section may be withdrawn or extended from the lower section to give a mast or derrick of desired height.
Prior art construction of this type of rig is illustrated by the White Patent No. 2,204,713. In such construction the derrick, in its rest position upon the truck, is positioned with its upper end, that is, the end carrying the crown block, over the forward end of the truck, and the bottom legs of the derrick, that is, the portion which is positioned on the ground, protrudes beyond the end of the truck. The derrick, in such construction, in order to be erected, must be pivoted about a hinge point which is positioned beyond the end of the truck. This is provided by means of a truss mounted on the end of the truck and the derrick is hinged upon said truss with the hinge point beyond the end of the truck. The erecting mechanism consists of a link which is connected near the bottom end of the derrick and in this fashion the erecting mechanism pulls on the end of the derrick and rotates the derrick about the hinge point.
Realizing that the derrick may weigh as much as 9 to 10 thousand pounds and that the hinge point is several feet rearward of the rear axle and the end of the derrick is beyond that, it will be noted that when the derrick starts to erect a lever load of considerable magnitude is exerted about the rear axle and that the only countervailing force is the weight of the truck itself. For this reason it has been found necessary in the construction of the prior art, as a measure of safety, to anchor the front of the truck before starting to erect the derrick.
It is also necessary to accurately spot the truck before starting to erect the derrick. In order to spot the truck the truck must be backed into position. Since the derrick is erected from the rear end of the truck, this becomes an extremely difficult and hazardous procedure. It is also a time consuming procedure since it is possible that 2 the spotting may not be accurate and this cannot be told until the derrick is erected and the truck has been tied down to permit the erection of the derrick. The derrick must then be retracted, the truck unanchored and respotted, by backing to and fro, i. e., jockeying into position.
I have designed a derrick mounting for such trucks which avoids these difficulties. I have designed a derrick mounting which permits the truck to be moved into position head first so that the driver can see where he is going and so accurately spot his truck and accurately position the derrick in the desired position. This I have accomplished by mounting the derrick so that its bottom end, that is, the bottom legs, protrudes beyond the cab while the top of the derrick, that is the crown block end, is toward the rear of the truck.
As an additional feature of my invention I mount the derrick upon a pivot point which is forward of the front axle and over the cab. I also mount the erecting mechanism so that the reactive thrust imposed, when the derrick is lifted off its rest position and rotated about its pivot point, is directed to the rear of the front axle but in front of the rear axle. As a result of this arrangement, the reactive thrust and the static load imposed on opposite sides of the front axle are in balanced arrangement, thus imposing no tilting force about any of the axles of the truck.
The driver in his cab position, where he has, as is conventional in trucks, all of the steering and driving controls, can see the derrick-moving into position at all times and thus may, if he so desires, readjust his position with great facility. Because of the fact that the cab is positioned adjacent the front wheels, where also the derrick is provided, the driver has an unobstructed view of the location where the derrick is to be erected. The improved visibility imparts a surer control by the driver who is in control of the lifting mechanism.
These and other objects of my invention will appear more clearly from the following description taken together with the drawing, in which:
Fig. 1 is a side view of the truck, partly schematic, showing the position of the derrick in rest position and in partly erected position in dotted line;
Fig. 2 is a plan view of Fig. 1 with the parts removed for clearer illustration;
Fig. 3 is a fragmentary detail, partly broken away, of the front end of the truck with the derrick shown in erected position;
Fig. 4 is. a front View of Fig. 3;
Fig. 10 is a section taken along line Ill-ll] of s Fig. 6;
Fig. 11 is a section taken alongline vI |--Il of Fig. 6; and
Fig. 12 is a section taken alongline-I2'-l2 ;of'
Fig. 6.
The truck I has an enclosed body 2. Slots 3,
for purposes to be described below,: are provided in the top cover. The truck carries itsmain motive power as an engine positioned in the rear of the truck in engine 4 compartment 5. The
truck-carries, enclosed in the body; winches B and- 'i "and suitable power transmitting mechanism, change *speedmechanism; controls, etc. It has rear wheels!) and front wheels?) and a cab l which-is positioned' at the forward end of-the truck. In the-eab-l ll are positioned the-steering controls and the motive power controls, as is conventional in-truck design. The chassis is composedof alongi tudinal frame member H and-rear cross member 12 and front cross member-l3; positioned midwayunder the cab and in front: of-theforward front wheels 9.
Mounted'upon the-front cross member l3'and withini'the cab lfl are two-columns l4 positioned oneyonr each side ofthe cab. These carry a cross member ;l5-positioned underneath the roof of" the -cab; Two-bearings l6 are positioned through the roof of the cab upon the member I5.-
The bearings lfi'are each'splitand composed of two halves :2|- and 22 hinged at '23 and bolted together withbolt 24. Pivotally mounted inside the bearing i 6 is the tubular cross member I I of the ,-lower section l8 ofxth'ederrick I9. The
upper end of the lower section (8 rests upon suphydraulic jack cylinders 21 are pivoted-at 25 upon abracket 26mounted :on the longitudinal frame member justrearwardof the front axle; The ends'of extensible piston" 28-of the-jack is connected "to a splitbearing1composed of sections 29'and 30 which are locked in;place by the clamp ingbolt 32:; The tubular cross member33 whichconnects the rear-legs'M (see Fig.5) of the lower section 18 is journalledin the split bearinggZQi- Itwill be observed that there are two such-units (see Figs. 6 and-:10) one positioned--0n-each*side 4 of the truck body; each' mountedgupon the longitudinalrmember l l, and operating one in each of the-slots 3 (see FigsrZfand 10).
The jack-28 is 'hingedly mounted at 21 uponpins 21 on the longitudinal members II and beneaththe brackets 26: The jack 2& has an extensible foot member 85 mounteduponthe I threaded leg =36 .whieh passes :through 'the jack head member-=31 through a screw thread connection. The member eii ends ina ball' and. socketjoint 38 to whichit is connected atthe-foot. 35.
4 The member 31 is connected by a link 39 which is pivotally connected at 40 to the underneath side of the longitudinal main frame member H by a removable pivot pin.
When the derrick is being transported it is in the retracted position shown in Fig. 1 with the top end .of thelower section .l8.resting upon the supports 20. The jack 28" is in its dotted position (Fig. 6) The link 39 is disconnected from the member II, by removing the pin 40, and
swunggintdthe-tdotted position as shown, and the .leg vt6 screwed into the tube of the jack 28. The vjack 28 is locked .into the dotted position by a-strap or-someother means not shown and as fWillibfilll'ldlStOOdGbY those skilled in the art.
There is one such jack on each side of the truck as shown in.Fig,;10.
The truck may be driven into the derrick site. Itwill' be observed that the driver has full view of the site and can spot his truck accurately. It will be observed that no equipment associated with the truck is positionedin front of the driver;
Particularly; as will be seen, the derrick legs straddle-the cab;and=the-derrick, while it is being erected or retractedto'rest"position, does not obstruct the" view of the operatorof the cab. When it is-in this position; jacks 28 are moved into position shown in'Figs. 6 and '10 and the link 39='connected at thepivot wat each' jack. The'foot' of each jack-is contacted against the ground by rotating'the'jack legs 36,thus wedging the truck in position.
The jack '2l'is then extended,- thederrick rotating-off its cradle onsupports20 and pivoting around the pivot l'l into vertical position; as shown in Figs. 3 and 4. When the derrick is in vertical position'the legs 4! are-screwed down until they restinpositionupon blocks 42 suitably provided.
It will be observed-that in moving into positionfr'om its rest position'to its vertical position the thrust load imposed by 28 is exerted against bracket '26 andagainst the'ground through jack 28' while the static load imposed upon the pivot I! is transmittedthrough the column M to the cross members-l3-andlongitudinal member H and'to the front-axle. The load-on I3 acts with the "load on- 26 toproduce a bending moment in the longitudinal frame member H between these points-,whichbending load is transmitted to the axle and toth'eground: Sincethe-load on 26-is carried'onthe member -H between therearand front axles and its moment is added to the weight ofthetruck andis-greater-than the moment oi the static'load -on l3, there is no tendency of the truck to tip and a stable platform for the drilling derrick-is presented even without the aid of the jack 28';
It will?'also be observed'that shouldit become necessary-when it appears that thederrick is not moving-intoits proper position it may be possible,
even'thoughthis:is'not-"desirable;to retract the leg 3E fonnotrto "employithe 'jack 28 at all at this stage and jockey the truckjnto properposition' with the 'derrick partlwerected-or retracted as desired. This isrbecause ff/he," driver can-see at alltimes where his derrick-is goingfrom his position in the .cab and because astable platform for the tilting derrickiispresented.
While I havetdescribed a particular embodiment ofmy-invention-forthe purpose of illustrationp-it should pe -understood that various modifications-and-- adaptations thereof may be' made within the=-spirit of:*the invention as set forth in-the appendedclaimsa I claim: I
l. A portable derrick, comprising a chassis, front wheels mounted on an axle positioned adjacent the front end of the chassis, rear wheels mounted on an axle positioned adjacent the rear end of the chassis, a drivers position with steering and motive power controls positioned adjacent the front end of said chassis and extending forward of the front axle, a collapsible and extensible derrick pivotally mounted on the chassis to move from a rest position on said chassis With the top end of the derrick positioned rearwardly of said chassis and the bottom of said derrick bein positioned on said chassis toward the front end of said chassis, spaced two front and two rear legs for said derrick, cross bracing between said legs with a free area between a portion of the rear legs, said derrick comprising a lower section and an upper section, means for moving said upper section relative to said lower section to extend and to collapse said derrick, a hinge on said derrick positioned near the bottom end of said derrick, said hinge also positioned on said chassis intermediate the forwardmost limits of said chassis and the front axle and above said drivers position, and means for rotating said derrick about said hinge to an erect position adjacent the front end of said chassis, said means including a rotation power transmitting member connected to said derrick at a point on said derrick spaced from said hinge, said transmitting member transmitting rotative power to said derrick to rotate said derrick about said hinge, and a load transmitting connection between said member and said chassis,
said connection being positioned on said chassis between said front and rear axles, lower portions of said legs being spaced apart transversely with respect to said chassis a distance greater than the transverse extent of said drivers position, and said lower leg portions and said hinge being located with respect to the longitudinal axis of said chassis to cause a portion of the drivers position to enter said free area and the lower rear leg portions to straddle said drivers position when the derrick is in said erect position.
2. A portable derrick, comprising a chassis, front wheels mounted on an axle positioned adjacent the front end of the chassis, rear wheels mounted on an axle positioned adjacent the rear end of the chassis, a drivers position with steering and motive power controls positioned adjacent the front end of said chassis, a collapsible and extensible derrick pivotally mounted on the chassis to move from a rest position on said chassis with the top end of the derrick positioned rearwardly of said chassis and the lower end of said derrick being positioned on said chassis toward the front end of said chassis, spaced two front and two rear legs for said derrick, cross bracing between said legs, said derrick compris in a lower section and an upper section, means for moving said upper section relative to said lower section to extend and to collapse said derrick, a hinge on said derrick positoned adjacent the lower end of said derrick, said hinge also positioned on said chassis intermediate the forwardmost limits of said chassis and the front axle and above said drivers position, and means for rotating said derrick about said hinge to an erect position adjacent the front end of said chassis with the lower end of said derrick legs in load transference relation to the ground, said means including a rotation power transmitting member connected to said derrick at apoint on said derrick spaced from said hinge, said transmitting member transmitting rotative" power to said derrick to rotate said derrick about said hinge, and a load transmitting connection between said member and said chassis, said connection being positioned on said chassis between said front and rear axles, the portions of said legs in load transference relationship to the ground being spaced apart transversely with respect to said chassis a distance greater than the transverse extent of said drivers position, and said leg portions and said hinge being positioned with respect to the longitudinal axis of said chassis locating said drivers position between the said leg portions with the said leg portions straddling said drivers position when the derrick is in said erect position.
3. A portable derrick, comprising a chassis, front wheels mounted on an axle positioned adjacent the front end of the chassis, rear wheels mounted on an axle positioned adjacent the rear end of the chassis, a drivers position with steering and motive power controls positioned'adjacent the front end of said chassis, a motive power unit positioned on said chassis rearward of said drivers position, winches positioned on said chassis rearward of said drivers position, a derrick pivotally mounted on the chassis to move from a rest position on said chassis with the top end of the derrick positioned rearward of said chassis behind said cab, the bottom of said derrick being positioned on said chassis toward the front end of said chassis, a hinge on said derrick positioned near the bottom end of said derrick, said hinge also positioned on said chassis intermediate the forwardmost limits of said chassis and said front axle and above said drivers position, and means for rotating said derrick about said hinge to an erect position adjacent the front end of said chassis, said derrick including spaced two front leg members and two rear leg members, cross bracing between said leg members, said derrick legs being in load transferenc relationship to the ground when said derrick is in erect position, the derrick axis being positioned in a slant plane with respect to the perpendicular as to cause the axis of said derrick to bear away from said chassis at an acute angle to the vertical when said derrick is in an erect position, portions of said derrick supporting legs resting on and in load transference relationship to the ground when the derrick is in erect position being spaced apart transversely with respect to said chassis a distance greater than the transverse extent of the forwardmost portion of said chassis, and leg portions and said hinge being positioned with respect to the longitudinal axis of said chassis locating the portion of said legs in said load transference relationship to the ground below said forwardmost portion of said chassis with said last-named leg portions straddling said drivers position when the derrick is in erect position.
4. A portable derrick, comprising a chassis, front wheels mounted on an axle positioned ad- J'acent the front end of the chassis, rear wheels mounted on an axle positioned adjacent the rear end of the chassis, a drivers position with steering and motive power controls positioned adjacent the front end of said chassis, a motive power unit positioned at the rear end of said chassis, a winch positioned between said motive power unit and the drivers position, a collapsible and extensible derrick pivotally mounted on the chassis to move from a rest position on said chassis above said motive power unit and said winch with the top end of the derrick positioned rearwardly of said aesmam chassiszandzthe :bottormoi: saidderrick ibeing rPQSi-E tioned fon-fsaidi ichassis =toward .the e front endnof. said chassis;spacedetwo-iront and twomeardessfomsaid derrick;v cross (bracingqbetweemsaid legs, saidvderricka comprising, aslowerssection :and an upper =section;- means formovingrsaidtupper section relativeto-said'lowerasection ttonextend and toacollapse=saidwlerrick .a--hinge on saidaderrick positioned adjacent the -lowerendof said derrick,- a'- hinge'support positioned'on said chassisvadjacent-.--the.- front axle.- and: supportingsaidhinge above said drivers .-position,.-,said motive/power unit and said-winch, and-.meansfor: rotating. said. derrick about said .hinge to a-n erect position. adjacent the front :end of isaid chassis, said means. including a rotation power transmittingmemberconnected to saidderrick atapoint on said. derrick spacedafrom said. hinge, saidetransmittingv member transmitting .rotative .power .to .said Tde'r.-.-
rick-to rotate said derrick about said hinge. and.
a load. transmitting. connection between-said. member and; said chassis, said. connection being positioned on.- said: chassislb'etweensaid .front and rear. axles, saidderrickslegs being in.load transference relation to the ground whensaid derrick is in an erect position, portions of said legs which are resting on the ground whenthe derrick is. in an erect position being spaced apart trans verse1y.,with respect tosaidchassis a distance greater than the transverse extent of said .drivers position, and said leg portions and said hinge beingrlocated with respect to the longitudinal axisof said chassis causing a portion of the 'drivers position to be positioned betweenthe said legpor: tions, said leg-portions extending from said hinge torest on theground and'straddle said driver's position with the de'rriclrin said erect position withlth'e .hinged.derrick in load transference re-' lationshipto the ground.
5. -A portable derrick, comprising a chassis, front wheels mountedon an'axle positioned ad jacent .the frontend of'the chassis. rear wheels mounted on an axle positioned adjacent the rear end of the chassis, a'drivers position with steer-' ing and .motive power controlspositioned adja-.-' cent the front end of said chassis, a motive power unit. positioned at the rearof said chassis, a collapsible and extensible derrickpivotally, mounted on the chassis to move from a, rest position on said chassiswiththe'top endof' the derrick posi= 8": tioned toward the rear of said chassisandathe lower; end,.of--,saidtderricksbeinge positioned on said chassisztowardhthe ,fr'ont. end of. said chassis;v
spacedtworfront land two rear legs .fo'r said derrick,- cross .bracingr-;betweensaid, legs, saidderrick-comprising: a lower section. and an upper.
section,.,means-for moving. said .upper. section relative to said lower section to.co11apse and ,to extendsaidlierrick, ahinge onsaid de'rrick'posi tionedcadjacent 'th'e lower. .end- .of said derrick} saidliinge .also positioned on said chassis adjacent the .frfont axle and above SaiddriVer 'pOsition,lmeans.for rotating said derrick to an erect position adjacent 'thefront end 'of said chassis;
and .imeans .cooperating;with' the lower endsof said 'derrick'legs to place said le'gs iniload transference relation to the ground withsaidderrick. in erect "position; jsaid lower ends of said. legs andsaid" means cooperating therewith being spaced'apart transversely, with respect to said' chassisa'distance:greater than the transverse extent offisaid "driver's position; and said lower ends, said means cooperating:therewith, and said hinge "being locatedwith respect to the 'longi-' tudinal: axis of said chassis locating said "lower' ends' of "onepair of front andrear legs and their respective cooperatingmeans'to one side of said driversposition'and the lower endsof theother pair'of frontand rearlgs and their respective cooperatingmeans-to the other side of said-driverspositi'onwiththe'derrick in said erect position? JAMES MOON.
References Cited in the file 0f this patent UNITEDISTATES PATENTS
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US35666A US2671537A (en) | 1948-06-28 | 1948-06-28 | Derrick mounting for portable drilling and servicing rigs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US35666A US2671537A (en) | 1948-06-28 | 1948-06-28 | Derrick mounting for portable drilling and servicing rigs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2671537A true US2671537A (en) | 1954-03-09 |
Family
ID=21884055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US35666A Expired - Lifetime US2671537A (en) | 1948-06-28 | 1948-06-28 | Derrick mounting for portable drilling and servicing rigs |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US2671537A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2922501A (en) * | 1954-10-05 | 1960-01-26 | Wilson John Hart | Portable rig mast and substructure |
| US2930489A (en) * | 1954-08-16 | 1960-03-29 | Howard D Brown | Lock and release device for hydraulically operated derricks |
| US3367448A (en) * | 1966-12-15 | 1968-02-06 | William A. Wille | Mobile elevator |
| DE1289495B (en) * | 1962-03-09 | 1969-02-13 | Reimann Otto | Work scaffolding arranged on a chassis, in particular Maekler |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US379424A (en) * | 1888-03-13 | Fire-ladder truck | ||
| US414578A (en) * | 1889-11-05 | Turn-table extension-ladder truck | ||
| US443096A (en) * | 1890-12-23 | Hook-and-ladder turn-table truck for fire departments | ||
| US2175381A (en) * | 1938-03-09 | 1939-10-10 | Henry E Dow | Extension tower and actuating means therefor |
| US2204716A (en) * | 1938-03-05 | 1940-06-18 | Franks Mfg Corp | Portable derrick mast |
| US2251013A (en) * | 1938-03-28 | 1941-07-29 | Genung | Machine for setting, shifting, and removing poles |
| US2315942A (en) * | 1942-09-29 | 1943-04-06 | Dravo Corp | Luffing crane |
| US2331558A (en) * | 1941-02-14 | 1943-10-12 | Int Stacey Corp | Portable derrick |
| US2335172A (en) * | 1942-08-20 | 1943-11-23 | Walter V Cornett | Concrete breaking machine |
| US2406620A (en) * | 1945-02-16 | 1946-08-27 | Clifford Waterhouse | Hoisting device for dump trucks and other vehicles |
| US2471735A (en) * | 1944-03-01 | 1949-05-31 | Chain Belt Co | Semitrailer vehicle with elevating means |
| US2496706A (en) * | 1946-08-02 | 1950-02-07 | Richard D Fiedler | Mobile pile driver |
-
1948
- 1948-06-28 US US35666A patent/US2671537A/en not_active Expired - Lifetime
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US379424A (en) * | 1888-03-13 | Fire-ladder truck | ||
| US414578A (en) * | 1889-11-05 | Turn-table extension-ladder truck | ||
| US443096A (en) * | 1890-12-23 | Hook-and-ladder turn-table truck for fire departments | ||
| US2204716A (en) * | 1938-03-05 | 1940-06-18 | Franks Mfg Corp | Portable derrick mast |
| US2175381A (en) * | 1938-03-09 | 1939-10-10 | Henry E Dow | Extension tower and actuating means therefor |
| US2251013A (en) * | 1938-03-28 | 1941-07-29 | Genung | Machine for setting, shifting, and removing poles |
| US2331558A (en) * | 1941-02-14 | 1943-10-12 | Int Stacey Corp | Portable derrick |
| US2335172A (en) * | 1942-08-20 | 1943-11-23 | Walter V Cornett | Concrete breaking machine |
| US2315942A (en) * | 1942-09-29 | 1943-04-06 | Dravo Corp | Luffing crane |
| US2471735A (en) * | 1944-03-01 | 1949-05-31 | Chain Belt Co | Semitrailer vehicle with elevating means |
| US2406620A (en) * | 1945-02-16 | 1946-08-27 | Clifford Waterhouse | Hoisting device for dump trucks and other vehicles |
| US2496706A (en) * | 1946-08-02 | 1950-02-07 | Richard D Fiedler | Mobile pile driver |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2930489A (en) * | 1954-08-16 | 1960-03-29 | Howard D Brown | Lock and release device for hydraulically operated derricks |
| US2922501A (en) * | 1954-10-05 | 1960-01-26 | Wilson John Hart | Portable rig mast and substructure |
| DE1289495B (en) * | 1962-03-09 | 1969-02-13 | Reimann Otto | Work scaffolding arranged on a chassis, in particular Maekler |
| US3367448A (en) * | 1966-12-15 | 1968-02-06 | William A. Wille | Mobile elevator |
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