US2134615A - Surface rod line jack - Google Patents

Description

I Get 25, '1938. c. LAMB SURFACE ROD LINE JACK 2 Sheets-Sheet l v Inventor @1 9 Ji Attorneys" Filed May 9, 1958 Get. 25, 1938. Q LAMB 2,134,615

.SURFACE ROD LINE JACK Filed May 9, 1938 2 Sheets-Sheet 2 m III [/11 J- C'a Zea-176ml Invnior' A ttorneys 15 Other objects of the inventionare to provide a jacent link I s a eve having mounted on 15 25 drawings wherein like characters of reference post I is aslide 2| of suitable metal. Grease cup 25 30' hooked off.

40 be seen that'the embodiment of the invention f t e Sp A150 mounted on this end D 40 Patented Oct. 25, 1938 a; v

7 *SURFACE R OD'LINE JAo v L e a t'wnan kl -i assi n of one l htl nnaa it a P l a e Ok -t "Application May' 9, 1938; Serial No. 206,96} t c t lfi f i i -li'ie a lf 11 I r The present-invention relates to newand useful" onthe inclined top H of; the block 3 for lubricat improvementsin power "rodline jacks particularly ing the ratchet-ban Bthrough a duct l2 in said for] oil wens-and has for its" primary object to bloolr. v The rodline (not shown)' is adapted to be provide, in a manner as'hereinait'er set forth; a connected toth e end 13 of the ratchet barfi,

F device'of; this character embodyingja; novel con- Metallic links M are 'pivotally rnounted for .struction, combination and: arrangement ofpa'rts swinging movement in a vertical plane on the through the medium of which a well may em; sides; of the block '3; Fivotallymounted on" the p'e'ditiously hooked on and oiffwithout danger of; links l ijand straddling the block 3 is a substan-} l injuringthe operator; whichfrequently occurs at tiall'y il shaped pawl l5'which is engageable with 1 present. a 3 theteth 9-for releasably locking the ratchet'bar 10 A no thervery important object of the invention 5agains't longitudinalrnove rne nt toward the pump is toprovide'a surface rod line jack of the aforejacki Projecting nom one side ofthe substani mentioned character embodying means for taking tially U-shaped pawl I5 is a, pin or lug l6: 1 Piv-' up slack in the power line. otally mounted on the free end portion of the adsurface rod line jack of the character described one end portion a, Weight The Other end p which will be comparatively simple in construction of the lever H is engageable with the lug I6 tion, strong, durable, highly efi'icient and reliable. for lifting the pawl I5 out of engagement with the in use, compact and which may be manufactured ratchet bar 6. Connected to this end portion of at low cost. the lever I1 is an assist spring 19 one end of 20 All of the ,foregoing and still further objects which is connected to a suitable bracket 20 on the and advantages of the invention will become appost I. parent from a study of the following specifica- Mounted for lon ud al move ent on the tion, taken in connection with the accompanying ratchet bar 6 on the power side of the knock-01f designate corresponding parts throughout the 22 are prov d o the Slide 2 Pivotally mountseveral views,and wherein: ed at an intermediate point on the slide 2| is a Figure 1 is a view in side elevation of an emlatch 23 which is engageable with the teeth 9 for bodiment of theinvention, showing the device cu in s sli 2| a ain t l n i udinal move- 7 I ment on the ratchet bar 6. The latch 23 is en- Figure 2 is a side elevational view, showing the gage b e W the ratchet bar 5 through an p device hooked on. a ing 24 which is provided therefor in the slide 2|. Figure 3 is a perspective View of the slide and Mounted on One end portion of the de 2| is a the parts carried thereby. handle 25. A spring 26 has one end connected to Figure 4 is an elevational view of the knockthe handle 25 and its other end connected to the 35 off post and the elements mounted thereon. latc 3 o disengaging d latch from the Figure 5 is a vertical sectional view, taken sub-- ratchet bar 6. A handle 21 is provided on the stantially on the line 5-5 of Fig. 4. free end portion of the latch 23 for engaging said Referring now to the drawings in detail, it will latch with the ratchet'bar 6 against the tension which has been illustrated comprises a knock-off o o t s e 2| and extending longitudinally post which is designated generally by the refertherefrom is a suitable connector 28. Theconence numeral l. The post I includes a metallic hector 23 y be fi t0 the Slide 2| n a y suittube or pipe 2 having mounted thereon a block 3 able e as by We ding. The reference nuof suitable material, preferably wood. The block m a 9 designates t d line to t p wer 5 3 is provided with a depending portion 4 which, Which is coupled to the e or 8. A guide as illustrated to advantage in Fig. 5 of the a d su po p s s v d for the. power drawings,lis secured in the pipe 2 through the e medium of-a bolt 5. v It is thought that the operation of the device The reference numeral 6 designates a ratchet Will be readily apparent from a o deration of 50 bar which extends slidably through a horizontal th so particularly o hose sk lled in the opening I which is provided therefor in the block art to which the invention pertains. When it is 3. The bar 6 is provided with a plurality of desired to knock 01? a well, the lever IT is simply longitudinally spaced notches 8 in its upper edge swung to the position shown in Fig. 1 of the providing teeth 9. A grease cup lfl is mounted" drawings. The weight I8 is heavy enough to 55 overcome the spring [9. With the lever I! in this position the pawl l5 swings downwardly and engages one of the teeth 9 of the ratchet bar 6 for locking said ratchet bar against movement toward the well. Further, the weighted lever I! rests on the lug 16 for retaining the pawl IS in engagement with the ratchet bar 6. It may be well to here state that when the well is hooked on, the latch 23 is engaged with one of the teeth 9 of the ratchet bar 6 for connecting the slide 2| thereto, said latch being held in engagement in this manner against the tension of the spring 26 by the constant load on the jack. When the slide 2| moves forwardly, with the ratchetbar 6 locked against forward movement by the pawl I5, the latch 23 is relieved of the load and is immediately swung upwardly to disengaged or inoperative position, thus hooking oif said slide 2 I. When it is desired to hook the well on again the lever I! is swung to the position shown in Fig. 2 of the drawings. The spring I9 assists in doing this. When swung to this position, one end portion of the lever I1 engages beneath the lug I 6 and raises the substantially U-shaped pawl I5 out of engagement with the ratchet bar 6. The latch 23 is then swung downwardly against the tension of the spring-26 through the medium of thehandle 21 for engagement with one of the teeth 9 for again operatively connecting the slide 2| to the ratchet bar 6. Obviously, the adjustability of the members 5 and 2| relative to each other permits slack in the power line to be readily taken up.

It is believed that the many advantages of a surface rod line jack constructed in accordance with the present invention will be readily understood and although a preferred embodiment of the device is as illustrated and described, it is to be understood that changes in the details of construction and in the combination and arrangement of parts may be resorted to which will fall within the scope of the invention as claimed.

What is claimed is:-

A surface rod line jack comprising a knock-off post, said post including a vertical metallic pipe, a'block mounted on the upper end of said pipe, said block having an opening extending horizontally therethrough, a ratchet bar extending slidably through the opening, links mounted for swinging movement in a vertical plane on the block, a substantially U-shaped "pawl pivotally mounted on said links and engageable with the ratchet bar for releasably securing said ratchet bar against longitudinal movement in one direction, a lug projecting from said pawl, a lever pivotally mounted on one of the links and engageable with the lug for engaging the pawl with the ratchet bar or for disengaging said pawl from said ratchet bar, a weight on one end portion of the lever, a spring connected to the other end,

portion of the lever for assisting in swinging said lever in one direction, and means for releasably connecting the ratchet bar to a source of p Qv5 er COY LEE LAMB.

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