US1997864A - Hydraulic weight indicator - Google Patents

Description

April 16, 1935. 1,997,864

HYDRAULI C WEI GHT I NDI CATOR Filed May 22, 1931 2 Sheets-Sheet 1 In wemar wwww By 5M dtlomeys is tees i,97,86

Eur OFFICE HYDRAULIC WEIGHT MDICATOR Frank Fletcher Hill, Los Angeles, Calli.

Application May 22, 1931, Serial No. 539,235

4% Claims. (Cl. 2635-47) This invention relates to hydraulic weight in- The outer ends of the pin 8 pass through eyes lll dicators for use in connection with the apparatus of the hook bails l l to pivet y support the hook employed in carrying out the rotary process of H2. The hook l2 may be of any suitable or dedrilling oil wells. sirable construction and is herein diagrammatig It is an object of this invention to provide a Cally illustrated as a rotary spring o hydraulic weight indicating device for indicating In order to p v ipp n of he cylinder 6 the weight imposed upon the drill utilized in drilland to provide a 4D for the Cylinder extension ing a well, which indicating device is constructed a p i3 is Provided Which is formed h as an integral portion of the suspending mechastops M which extend on opposite sides of one no nism utilized in suspending the drill stem in th of the bails 3 to prevent rotation of the cylinder derrick. extension 6 or the cross head l on the trunnions Another object of this invention is to provide 5 thereof- The p l3 is secured be the pp a hydraulic weight indicating device including a end o the y d extension y means of p cylinder supported in a traveling block having a bolts l5 which are threaded to the cylinder exld Piston mounted therein which is secured to the tension 6 to pa through the p 1" bails of the suspending hook and which piston T e plunger 7 is p d d with a sealing ring is supported on a. fluid so that the weight imherein illustrated as comprising a flexible packposed upon the traveling block may be indicated l g rin 16 d in position by means of a from the pressure developed in such fluid. taining ring H secured to the lower face of the Other objects and advantages of this invenp un er 7 y means of a plurality of Cap bolts 20 tion it is believed will be apparent from the foll8 spaced around the ring H and threaded to lowing detailed description of a preferred emthe plunger 1. A split ring I9 is carried in an bodiment thereof as illustrated in the accomannular groove 20 formed in the ring H in posip y d gs. tion to expand outwardly to force the packing In the drawings: ring it against the wall of the cylinder 6. 25

Figure 1 is a side elevation of a combined trav- In order to register the pressure imparted to cling block and hook structure including a hythe fluid 24 within the cylinder 6, a port is draulic weight indicating means embodying my formed through the wall of the cylinder 6 and is invention. connected by means of a fitting 2! with a flexible Figure 2 is an edge elevation partly in section hose 22 leading to a gauge 23. The gauge 23 30 thereof. may be positioned in any suitable or desirable Figure 3 is an enlarged fragmental sectional position within the derrick at a place where it view of the hydraulic weight indicating device may be readily observed by the operator of the embodying my invention. drilling mechanism.

In the preferred embodiment of my invention Having fully described my invention, it is to 35 illustrated in the a o p y wings, I inbe understood that I do not wish to be limited diestes a r v n block over which the cable is to the details herein set forth, but my invention trained from the crown block of an oil well deri of the full scope of the appended claims. rick. The traveling block I is provided with a I claim:

40 transversely extending supporting end 2 upon 1. In a hydraulic weight indicating device, 40

which bl ck bails 3 are p fl y mellhtedhe the combination of a pivotally mounted crosslower end o the block balls 3 are Connected head, acylinder supported by the cross-head and together by means of a cross h ad 4 h c is DiV- having a pair of diametrically opposed elongated otally mounted by trunnions 5 in the lower eyes slots, at plunger mounted within the cylinder,

of the balls 3. a cap for the cylinder, the cap being provided Formed integral with the cross head 4 is a with means for restricting the pivotal movement ylinder 6 within which a plunger or piston 7 is of the cross-head, a pin passed transversely mounted. Positioned in the cylinder 6 below through the plunger and extending through the the plunger 7 is a volume of fluid 24 such, for eX- elongated slots formed in the cylinder, and sus- 5', ample, as oil upon which the plunger 7 is suppension bails mounted on the opposed ends of ported. The plunger 1 is positioned within the the pin.

' cylinder 6 to move vertically. The plunger 1 is 2. In a hydraulic weight indicating device, the provided with a transversely extending pin 8 combination of a pivotally mounted cross-head, which extends through elongated slot 9 formed a cylinder supported by the cross-head and through the wall of the cylinder extension 6 having a pair of elongated slots, a plunger 5 restricting the pivotal movement of the crosshead, a pin passed transversely through the plunger and extending through the elongated slots formed in the cylinder, suspension bails mounted on the opposed ends of the pin, and a port formed through the cylinder in communication with a volume of fluid confined in the cylinder to which a weight registering means is adapted to be coupled.

3. In a hydraulic weight indicating device, the combination of a pivotally mounted cross-head, a cylinder supported by the cross-head and having a pair of diametrically opposed elongated slots, a plunger mounted Within the cylinder, 2. cap for the cylinder, means for restricting the pivotal movement of the cross-head, a pin passed transversely through the plunger and extending through the elongated slots formed in the cylinder, and a suspension bail mounted on the opposed ends of the pin.

4. In a hydraulic weight indicating device, the combination of a pivotally mounted cross-head, a cylinder supported by the cross-head and having a pair of elongated slots, a plunger mounted within the cylinder, a cap for the cylinder, means for restricting the pivotal movement of the crosshead relative to the cylinder, a pin passed transversely through the plunger and extending through the elongated slots formed in the cylinder, suspension bails formed on the opposite ends of the pin, and a port formed through the cylinder in communication with a volume of fluid confined in the cylinder to which a weight registering means is adapted to be coupled.

FRANK FLETCHER HILL.

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