US2264342A

US2264342A - Geophysical instrument mounting

Info

Publication number: US2264342A
Application number: US273323A
Authority: US
Inventors: Silverman Daniel; John L Bible
Original assignee: Stanolind Oil and Gas Co
Current assignee: Stanolind Oil and Gas Co
Priority date: 1939-05-12
Filing date: 1939-05-12
Publication date: 1941-12-02
Anticipated expiration: 1958-12-02

Description

Dec, 2, 1941. D. SILVERMAN ET AL 3 3 2 59 Pl i 4 46 N o J. 54 3 4g I. 0 5a I 1 i i' n1 III 53 .49 4 3.1 5*

fiz'yj.

ATTORNEY 4 I D. SILVERMAN ETAL 2,264,342

GEOPHYSICAL INSTRUMENT MOUNTING Filed May 12, 1939 4 Sheets-Sheet 5 1941. D. SILVERMAN EI'AL 2,264,342

GEOPHYSICAL INSTRUMENT MOUNTING Filed May 12, 1939 4 Sheets-Sheet 4 v INVENTORS: Jaaul'tuegwzwn Patented Dec. 2, 1941 UNITED STATES PATENT OFFICE GEOPHYSICAL INSTRUMENT MOUNTING Daniel Silverman and John L. Bible, Tulsa, kla.', assignors to Stanolind Oil & Gas Company, Tulsa, 0kl a., a corporation of Delaware Application May 12, 1939, Serial No. 273,323 Claims. (01. 265-14) This invention relates to a mounting for geophysical instruments and more particularly to causes difllculty in handling the instruments,

since considerable effort must be exerted to move and place them while at the same time they must be handled carefully in order to avoid damaging the delicate parts. The usual method is to transport geophysical equipment in trucks equipped with tripods which can be projected through the floor of the vehicle to find support on the ground. After the tripod is in place the instrument is lifted to the head of the-tripodand adjusted to the proper level and direction. This particular operation requires great manual labor, because of the weight and bulk of the instrument, and great care, since any slight mishap may cause serious damage to the instrument itself.

It is an object of this invention to provide. a mounting for geophysical instruments by which they can be transported safely in vehicles and placed upon the supporting tripod without the necessity of manual handling and without danger of injury. Another object of our invention is to provide a mounting for a geophysical instrument which will minimize the mechanical labor necessary to place this instrument in the proper condition for use. Other and more detailed objects, advantages and uses of our invention will become apparent as the description thereof proceeds, read in conjunction with the accompanying drawings which illustrate one specific embodiment thereof. 7

Figure 1 is a plan view showingthe general features of'the geophysical instrument mounting.

Figure 2' is a front elevation showing the frame of the geophysical instrument mounting, and also showing the support of the geosorbing mount of the geophysical instrument on the carriage taken along the line 8-3 of Figure 1.

Figure 4 is a detailed plan view of the lower frame of the tripod showing the elevating gear mechanism.

Figure 5 is an elevation of the lower tripod frame without the gear mechanism. Q

Figure 6 is a detailed plan view of the center gear mechanism shown in Figure 4. v

Figure 7 is a detailed elevation of the center gear mechanism shown in Figure 6.

Figure 8 is a detailed elevation of the worm drive assembly taken along the line 8-8 of Figure 4.

Figure 9 is a sectional elevation of the worm drive assembly taken along the line 9-9 of Figure-8.

Figure 10 is a plan view of the upper tripod showing the locations of the three contact points.

Figure 11 is a, sectional elevation taken along the-line ll-ll of Figure 10 showing in detail a movable contact point.

Figure 12 is another sectional view taken along the line I2--I2 of Figure 10 showing in detail the fixed contact point.

Figure 13 is -a lan view showing a modification of our geophysical instrument mounting.

instrument I0 is mounted on carriage II and fastened thereto by eye bolts l2 and wing nuts l3 which engage slotted brackets l4 fastened to f; geophysical instrument Ill. Carriage H comof v physical"i'nstrument on the tripod above the floor of the vehicle.

, Figure 3 is a detailed section of the carriage mounting and carriage showing the shock abprises two cross bars IS, the ends of which are fastened to upper channel frames l6 of'shock' absorber assemblies I'I (Figure 3). Lower channel frames iii are fastened topedestals l9. Axles '20 of flanged wheels 2| are held in pedestals l9 cross bars ii of carriage II is located a circular track 23 on which are mounted roller bearings .24. Thej'base of geophysical instrument In is equipped with circular flange 25 which corre-- sponds to track 23 and guides geophysical instru-' ment l0 about rollers 24 and prevents it from being dislodged from the rollers. Track 22 rests on floor H of the vehicle and extends from the nels.

front of the vehicle up to the tripod head as far as possible, at which point the track is terminated by stops 26 to prevent; further movement of the carriage wheels 2|. The tracks 22 extend to such a distance that the carriage carrying the geophysical instrument In is located over the tripod head'as indicated by the dotted lines It). Moreover, cross bars l5 are sufficiently elevated above track 22 that the carriage is above the tripod head. Tracks 22 are long enough to permit carriage I with its geophysical instrument to be moved entirely clear of the tripod head and located at the front of the vehicle. In order to prevent the movement of the carriage while the vehicle is in motion or after the geophysical instrument has been set in place on the tripod heads, the wheels are chocked by means not shown.

As will be seen from the plan view illJistrated in Figure 1, the tripod head consists of two triangularpframes of different size, the smaller frame being superposed on the larger frame, The larger tripod head is formed of three

channels

21, 28 and 29 carrying vertical angles 30 which are welded in place at the juncture of the chan- These angles serve as guides for the three legs 3| and these legs 3| may be clamped in place by means of clamps 32. The clamps are operated by means of wing nuts 33, being normally urged to an unclamped position by springs 34. When the vehicleis in motion vertical angles 30 of

lower tripod frame

21, 28 and 29 rests on the floor 14 of the vehicle and the tripod legs 3| are clamped in a raised position.

The upper triangle of the tripod head is composed of

channels

35, 36 and 31. This triangle is held in shape by blocks 38 which may be welded to the channels. The

frame

35, 36, 31 is supported above

frame

21, 28, 29 by screw shafts 39 (Figure 2), the details of which will be'described more fully later. Shown generally on

frame

35, 36, 31 are

contact points

40, 4| and 42 and

hand wheels

43 and 44. Also shown generally is the center gear assembly for elevating and lowering

frame

35, 36, 31 which is controlled-by crank 45 and crank shaft 46 which passes through bearing 41 fastened to channel 29. This will also be described in more detail later.

Figure 4 of the drawings shows in greater detail the gear assemblies on

frame

21, 28, 29. Across each corner of

frame

21, 28 and 29 are

angles

48 and 49 which are fastened to the

channel frames

21, 28 and 29. Supported on

angles

48 and 49 are bearing posts 58 bolted thereto by bolts 5|. Supported within bearing posts 59 are worm wheels 52 which cooperate with worm screws 53 on shafts 54. Shafts 54 pass through

bearings

55 and 56 and are keyed therein. The

opposite ends of screw shafts 54-are equipped" with beveledgears 51 whichcooperate with the lower beveled gear 58, shown in Fig.9. Wing bolts 59 cooperate with openings 59a in channels, 21, 28 and 29, inwhich pins (not shown) are inserted.

Figures 6 and 7 show in greater detail the gear assembly at the mid-point of the

lower tripod frame

21, 28 and 29. A plate 60 supported on angles 6| and 62 which in turn are fastened to the lower legs of the

channels

21 and 28 supports shaft 63 shown by the dotted line in Figure 7. Worm shafts 54 pass through bearings 54 which are suspendedfrom plate 60. Shaft 46 passes through bearing 65 which is supported on plate 60, and terminates in beveled gear 66. Beveled .gear 61 cooperates with Beveled gear 66 movement of the carriage and is joined to beveled gear 58 by the common shaft 63.

Figure 10 shows the details of

frame

35, 36 and 31.

Angles

68, 69 and 10 support contact points 40, 4| and 42 and are fastened to

channels

35, 36 and 31. Contact point 40 is a fixed contact point while contact points 4| and 42 are thrust bearings, as may be seen in Figure 11. The height of contact points 4| and 42 may be adjusted by rotating

hand wheels

43 and 44 which are fastened securely to threaded shafts 1| (Figure 11) one of which passes through a threaded opening in angle 69 and the other through a similar opening in angle 10. Figure 12 illustrates the means of fastening the fixed contact point 40 to angle 68 by means of

nuts

12 and 13.

In operation the geophysical instrument III is mounted on carriage II and fastened securely thereto by eye bolts l2 and wing nuts 13 which cooperate with slotted brackets M on geophysical instrument In. The tripod head is rough leveled as indicated by levels 15 by means of pins (not shown) in holes 59a, one end of which rests on the floor 14 of the vehicle. The tripod is raised or lowered by hand to a roughly horizontal position and the pins fastened securely in place by wing bolts 59. When this has been accomplished, wing nuts 33 are loosened, thereby releasing springs 34 which will urge clamp 32 to an unclamped position and permit legs 3| to be lowered to the ground through openings in the floor 14 of the vehicle on which the mounting is carried. Legs 3| are driven securely into position, wing nuts 33 are tightened and the tripod head is thus secured in a roughly horizontal position. If desired, wing bolts 59 may then be loosened and the pins in holes 59a removed.

When the tripod head has been roughly leveled, carriage bearing geophysical instrument I0 is moved forward along tracks 22 until it is in position above the tripod head and the wheels 2| of carriage braced against stop 26. The wheels 2| are then chocked firmly to prevent The tripod legs 3|, and particularly the rear tripod leg, should be low enough after it has been driven into position to permit the frame of carriage II .to pass above it without obstruction. Geophysical instrument I0 is freed from carriage H by loosening the wing nuts l3 and removing bolts I2 from brackets I4, and oriented, if necessary, by swinging it in the proper direction. Rollers 24 on track 23 serve to permit this operation without the exertion of any great effort on the part of the operator and flange 25 prevents geophysical instrument ||l from disengaging from the rollers. '

Frame

35, 36 and 31 of the tripod head is raised until the contact points 40, 4| and 42 contact the base of the geophysical instrument I0 and elevate it from carriage II. This is accomplished by turning crank 45 which in turn revolves shaft 46 and beveled gear 66. Beveled gear 66 meshes with beveled gear 61 and causes it to revolve thereby revolving beveled gear 58 which is joined to beveled gear 61 through shaft 63. As beveled gear 58 turns it causes beveled gears 51 to revolve in turn which imparts a rotary motion to worm shafts 54. Worm screws 53 on shafts 54 mesh with worm wheels 52 causing them to turn screw shafts 39, thereby raising

upper tripod frame

35, 36 and 31. Screw shafts 39, being engaged in threaded blocks 38 of upper tripod frame, raise the entire frame until the contact points 40, 4| and 42 contact geophysical gears 52 and screw shafts 39 respectively, are

identicalin shape and size geophysical instrument ID will be raised in approximately the horizontal position which was obtained by

rough leveling frame

21, 28 and 29.

The oriented geophysical instrument I resting on contact points 40, 4| and 42 is now carefully adjusted to a level position as indicated by levels (not shown) on geophysical instrument In by means of

hand wheels

43 and 44. As has been pointed out contact point 40 is a fixed contact point while contact points 4| and 42 are movable contact points. By turning

hand wheels

43 and 44 to the right or left as may be necessary,

the contact points 4| and 42 may be raised or lowered by the operator until geophysical instrument I0 is accurately leveled. The readings can then be en, the instrument lowered by lowering fra e 35, 36 and 31 through a reverse manipulation of the gear mechanism previously described until the instrument Ill again rests on carriage II. The screws l2 are readjusted in brackets l4, and wing nuts l3 tightened, thereby.

strument l0 and preventing the injury to the delicate parts of the instrument.

In a modification of our mounting, the carriage and track for moving the geophysical instrument into place is eliminated. and the instrument carried above the tripod heads" on shock absorbing supports. This is shown in Figures l3 and 14. Figure 13is a general plan view of this arrangement, while Figure 14 is an elevation showing in more detail the method of mounting the geophysical instrument above the tripod assembly. It will be obvious that the various details shown in Figures 4, 5, 6, '7, 8, 9, 10, 11 and 12 are equally applicable to this modification, and are omitted for the sake'of simplicity.

Referring now to Figure 13, the ends of cross bars l are fastened to upper channel frames 16,

of the shock absorber assemblies I! as before;

Lower channel frames I8 are mounted on posts 80, which are fastened firmly to the floor 14 of the vehicle. Geophysical instrument I0, fastened to cross bars l5 as previously described by wing nuts [3, screws l2 and brackets I4, is located in the desired position above the double tripod head. When the vehicle is in motion, the delicate parts p 3 brackets, etc.' In all cases, however, a shock absorbing medium is interposed between the frame supporting the geophysical instrument and the stationary supporting means.

This modification is particularly applicable in locations where the length of the vehicle is insufficient to permit the installation of the movable carriage and track arrangement, and may also be used in those locations where access to the rear tripod leg (for positioning it securely) is not a problem. It should be pointed out, however, that the angle at which tripod legs 3| are held must not be greater than will permit these legs to be drawn up into the vehicle without being interfered with or limited by the walls of geophysical instrument I.

It will be seen by the above that we have provided a mounting for-geophysical instruments intended to be conveyed by vehicle which protects the delicate parts of the apparatus and yet at the same time permits the quick and easy adjustment of the instrument to the position in which it is to be utilized without great manual labor or hardship in moving the heavy bulky portion of the instruments.

We claim:

1. A geophysical instrument mounting comprising a tripod having a fixed head and an adjustable head, a support for a geophysical instrument, means for adjusting said support to position said geophysical instrument above said tripod, and means for elevating said adjustable head to support said geophysical instrument.

2. A geophysical instrument mounting comprising a tripod having a fixed head and an adjustable head, a shock-proof support for a geophysical instrument, means for adjusting said shock proof support to position said geophysical instrument above said tripod on said shock-proof support, and means fer elevating said adjustable head to support said geophysical instrument.

3. A geophysicalinstrument mounting comprising a tripod having a fixed head and an adjustable head, a shock-proof support for said geophysical instrument when not in use, means for adjusting said geophysical instrument above said tripod, means for elevating said adjustable tripod head to lift-said geophysical instrument from said support, and means for leveling said geophysical instrument on said adjustable tripod head.

4. A geophysical instrument mounting comprising a vehicle, a' carrying support thereon for a geophysical instrument, shock-absorbing means associated with said carrying support, a fixed support adapted to project through the floor of said vehicle into firm contact with the earth and means associated with one of said supports whereby the vertical separation between said two supports is decreased and the geophysical instrument is lifted free of said of. the instrument are protected from damage by the shock proof mounting. When the instrument is to be used, it-is only necessary to free the instrument from its fastenings, orient it by means of rollers 24, (after properly adjusting the base tripod) and raise upper tripod head until the contact points lift the geophysical instrument. from its support. After proper level adjustment has been made, the'instrument is ready for use. Other stationary means than the posts illustrated for supporting geophysical instrument It) in position are contemplated within the scope of this invention and may include walls, angles carryingsupport by the upper portion of said fixed support and is thus held in fixed relationship with the earth while in use.

' 5. A geophysical instrument mounting comprising a vehicle, a fixed support for a geophysical instrument, adapted to project through the floor of said vehicle into firm contact with the earth, a carrying support for said geophysical instrument, said geophysical instrument being adapted to rest upon said carrying support above said fixed support, a raisable portion on said fixed support and means associated therewith for raising the raisable portion of said fixed support into contact with said geophysical instrument to lift said geophysical instrument free of said carrying support onto said fixed support.

6. A geophysical instrument mounting comprising a vehicle, a carriage therein to support said geophysical instrument, shock-absorbing means associated with said carriage, a fixed support adapted to project through the fioor of said vehicle into firm contact with the earth, track means for moving said carriage into position with said geophysical instrument over said fixed support and means mounted on said fixed support for lifting said geophysical instrument free of said carriage.

7. A geophysical instrument mounting comprising in a vehicle a movable support for a geophysical instrument, a guide to direct translational movement of said support, a guide to direct rotational movement of said geophysical instrument on said support and a fixed support having means thereon adapted to lift said geophysical instrument free of said movable support.

8. A geophysical instrument mounting comprising a vehicle, a first support for said geophysical instrument, said support being carried by said vehicle, a second support for said geophysical instrument, said second support being adapted to project through the floor of said vehicle into fixed contact with the earth, guiding and supporting means for moving said first support carrying said geophysical instrument into a first position in which said first support is distant from said second support and into a second position in whichsaid first support is above said second support, and means associated with one of said two supports for lifting said geophysical instrument free of said first support and onto said second support.

9. A geophysical instrument mounting comprising a vehicle, a first support for said geophysical instrument, said support being carried by said vehicle, a second support for said geophysical instrument, said second support being adapted to project through the floor of said vehicle into fixed contact with the earth, guiding and supporting means for moving said first support carrying said geophysical instrument into a first position in which said first support is distant from said second support and into a second position in which said first support is above said second support. guiding means associated with said first support for rotational movement and adjustment of said geophysical instrument and means associated with one of said two supports for lifting said geophysical instrument free of said first support and onto said second support.

10. A geophysical instrument mounting comprising a vehicle, a tripod'having a fixed head and an adjustable head, legs for supporting said fixed head and projectable through the fioor of said vehicle into firm contact with the earth, means for raising and lowering said adjustable head, a wheeled truck for supporting said geophysical instrument, shock-absorbing means on said truck for protecting said geophysical instrument, guiding means for directing said truck bearing said geophysical instrument above said tripod, means on said adjustable tripod head for supporting said geophysical instrument in a raised position above said truck, and means connected with said last-mentioned supporting means for adjusting the level of the supported geophysical instrument.

DANIEL SILVERMAN. JOHN L. BIBLE.