US1826908A - Valve spring compressor and replacer - Google Patents

Description

.Oct. 13, 1931. J. E. WAINWRIGHT 1,326,908 I VALVE SPRING COMPRESSOR AI JD REPLACER 2 Sheets-Sheet 1 Filed Feb. 1.6, 1929 x .5 m. M

I Oct. 13,1931. wA|NwR|GHT 1,826,908

VALVE SPRING COMPRESSOR AND REPLACER Filed Feb. 16, 1929 2 Sheets-Sheet 2 INVEN TOR. JOSEPH sm/nnw/a/rr ATTORNEYS.

Lee

lien

Patented Oct. 13, .1931

eosnrn E WAINWRIGHT, 10F BBOOKLYNQN 03k 'vALv'E" SPRING do urimssoe emje e mceej l Application;filedjebruaryiw, 1929.v I Seriel 340,4} 37;f

This invention. relates tof-velve tools ofthe type employed tor colnp'ressingjenclfllift ng valve springs of internal combustion engines proved tool;

incident to making repairs thereto.

5 One of the primary Obje ci e-P invention fisv to provide 2; simple and rugged valve spring tool-Which 'vvill efiectively and positively aceomplish the deslred result end with the expenditure of e'minimumen ount:

10, of tinieland effort.

" .Anothersail'ie nti Y Y the IPI V 50f: p ll et heed carrying the compressing" rack bar and operating crank therefor, -the iheadbeing rotatable on the 15 frame otftl-ie toolgfvvherebyi the crank can be disposed in a eonvenient pos1t1on foropere tion and outof the Way of joints ofthe engine and whereby the crank can beplaeed on'o'ne side of the frame or the other for the eon- 80 venience o fle'ft or right hendvvvorl rmen I v i A further object of the invention 1s the.

provision of ,a novel friction I loCkcfarried directly by the pinion' shefh for positively locking the pinion Jandeon'sequent'ly the rack l 25 bar in an adjilst e'd-rpo-sit'ion the'lock beingo'f nient to be had.

silch e'ichar'e'eter as p'eriiiit e fine adjust- A further object'of the invention is the provision of a novel spring pressed centering pin carried bythe reek 'for engagingfthe re-' cess in the valve head to permit elinement of the tool "with the longitudinal-axis of the valve, when the tool is used on the valve for conip'ressingthespring end 'forcenterifng and holding the springwhen the spring isloein'g recompressejd foressoei'ation with thevelve stern. The foot ot the frame reeeives e novel dome oflcjon-icelshape for properly holding the lower endof the springdu'ring the eo'n'1"-' pressionthereoif. i 1 f 1 v i A still'further 'objeetfof theinvention is to provide an improved "tool of the ebove'oha ester, Which Will befdurable-end 'eflici'ent in use," nethatwill beeasy to memifectureend one "which can be placed upon the market at e reesonablecostp' With these" and; other objects "View, the

invention consists in the novel eonst'ruetion, arrangement endformet onof pe'rts,e's"wv1'll hefhe' matter-[more spec ficallydescr bed;

bj eet invention is 7 direction of the arrows";

in section with the crank, the view illustrat claimed, end illustrated in the accompanying d'rewiiigs in'Whiehfdrevvings: Fi ure 1 is' a 'perspeetivefview of my im Figure 2 is showing the tool house on in engine fore'oinlpressing aj valve" spring thereon tofeeilitete' the removal of the holding pin .on the valve;

Figure "3 is ade'teilvertieel seht'itiiu showing- 1 the toollin use for recompressing esprit-1g; i1-

r t gflie dome associated-with the-foot of the frame for eenterin g'the spring and for;

receiving the lower hooked-endso-f the spring holding'clip; Fig1ire 4 is a det ail'verticel section taken on the line of Eigfi relooking in the di -Y rection of theerrows; ff;

- Figure 5 is enenhi ged fragmentary side elevation ofthe flipper end of the ifraniej'showzgti) i i ing the novelturret heed end'jaek loeJr,- pa" t being shown broken may and in section;

Fliguree is a frag-men .Ofthe improved device; 1;;

I Figure {Lisa detail "ve'irt'icel"seetion telken onj the' line 7 -7 of Figure 5 looking in thes Figure 8 is a side elevationof the he me sh'oWingfthe inner face thereof;

Figure 91 a detail side elevation e the pinion shovving the countersunk face thereof} Figure 10 is edeteil side'elevetio'n of the operating shaft with the opereting "erank I at! tachjed thereto, pertof thes'heft being shown ing the-novel eonstruction ofthe' shaft for: V i receiving the pinion and the'jam nut, the

lines;

' Figure 11 is zi' fregrnenterjside el'ev'ition 90" of one end ofthefopereting': eh ft illustretmg a sli htly odified Ineen's" r ho1di1ig V the" jam in position, the Washer means being shown; ini'fsection v V or Figure 1-2 is Ca detail *vertieel Qseetion through the'l'owver endof the reek berend l'ookingj 'in'the 'direetion'offtl V Figure 131's arfraginentery-"side elevation arrows;

f h we y vi e f bt m diiqfm Fe? of turret head with modified means for locking the head in an adjusted position on the frame;

Figure 14 is a fragmentary plan View showing the foot carried by the lower end of the frame, parts of the foot being shown broken away and in section and illustrating the means which can be employed for adjusting the resilient arms of the foot toward and away from one another; V

Figure 15 is a detail horizontal section taken on the line 15--'l5 of Figure 14 looking in the direction of the arrows illustrating the means for anchoring the adjusting bolt for the resilient arms of the foot in position.

Referring to the drawings in detail, wherein similar reference characters designate corresponding parts throughout the several views. the letter A generally indicates my improved tool which comprises a frame 15 of substantially C shape. This frame is preferably formed from a single piece of steel and includes the upper and lower legs 16 and 17 and a connecting vertically disposed body portion 18. i j

The upper leg 16 supports my novel turret head'19 which forms one of the salient features of my invention. This turret head forms a casing for the operating parts of mV tool and this head slidablv receives the rack bar 20, which extends vertically therethrough at the longitudinal axis thereof. The turret head 19 adjacent to its upper end and at one side of the rack bar 20 rotatably carries the operating shaft 21 which is also of novel construction. As shown. the shaft 21 includes a spaced bearing portion 22. of a relatively large diameter. and a bearing portion 23 of relatively small diameter. and these'bearing portions are received within suitable'bearing openings in the turret head or casing. The portion of the shaft between the bearing portions 22 and 23 is provided with right hand threads 24 and the operating pinion 25 is threaded thereon in contact with the shoulder 26 on said shaft defined by the portion 22. A stud 27 is formed axially on the bean ing portion 22 and receives the operating crank 27 which crank can be held in place through the medium of a nut 28 threaded on said stud. The end of the shaft opposite the stud 27 also protrudes beyond the turret head or casing and has formed thereon relatively coarse left hand threads 29 for the reception of the jam nut 30 which forms a part of my novel lock for holding the rack bar 20 in its readjusted position. The jam nut is provided with an operating handle or crank 31 and the inner face thereof is provided with a cam surface for binding engagement with one face of the frame or turret head. At this time attention is directed to the fact that the inner and outer faces of the casing or turret head on opposltesides of one bearing opening are provided with annular friction ribs 32 and that the jam nut has its inner face concaved as at 33 for frictional contact with the said annular rib adjacent thereto. Likewise one face of the pinion is also dished or concaved as at 34 for engaging the adjacent annular friction rib 32 when the jam nut is tightened up on said shaft. By this construction it can be seen that when the jam nut is tightened that the shaft will be drawn laterally'bringing the nut toward the turret head or casing and the pinion in intimate contact with its adjacent friction rib 32, and that the pinion and the jam nut will frictionally contact with said friction ribs 32 and thereby prevent movement of the shaft and consequently locking the rack bar in an adjusted position. It can be seen by this form of lock that the rack bar can be adjusted very finely and at any point on said head. The jam nut 30 can be held on the shaft against accidental displacement therefrom in any desired way, and I can employ a set screw 35 and a washer '36 for this purpose as shown in Figure 10 fof'the drawings, or I can reduce the end of the shaft to provide a smooth extension 37 for the reception of a washer 38 which can be held in place by a cross pin 39. This is shown in Figure 11 of the drawings. A cross pin 40 can be carried by the upper end of the rack bar 20 in order to limit the downward sliding movement thereof.

Attention is again invited to my turret head 19 and it isto be noted that the same gradually decreases in size toward its lower end and terminates in an axially disposed cylindrical bearing shank portion 41 which isrotat-ably mounted within the collar 42 carried by the upper arm 16. formed on 'or secured to the arm in any de sired way and in the present instance the collar is provided with a yoke 43, the arms of which receive the upper arm or leg 16 of the frame 15 and is secured thereto by suitable bolts or other suitable fastening elements 44. Directly above the bearing shank portion 41 the turret head is provided with an annular shoulder 45 which bears against the upper face of the collar 42. The portion of the bearing shank portion 41 which protrudes below the collar is provided with external threads for the reception'of a holding nut or threaded ring 46 which can be held against accidental displacement by the use of a set screw 47. By this arrangement, it can be seen that the turret head or casing 19 is freely revoluble on the arm and in order to hold the turret head in an adjusted position on the frame a set screw 48 is carried by thecollar which can impinge against the wall of an annular guide groove 49 formed in'thebearing shank 41.. To lessen the weight of the turret head and tofacilitate the sliding-of the rack bar 20 therethrough I prefer to have the inner face thereof only contacting with This collar can be v the rack bar at opposite diagonal points and the other portions of the turret head can hollowedout'if desired.

The lower end of the rack bar QO carries a novel head 50, which also forms one of the important features of my invent-ion. f This' head 50 is oflasubstantially disc shape'with f the lower face thereof preferably "concaved.

as at 51 and this head caube formed on or m secured to the rack bar in anv desired; wayg 'In-the presentinstance I have shown the head 50 providedwith upstanding spaced arms 52 between which th'e'lower end ofthe' rack bar 83 is received and suitable fastening elements 7 such as a screw. 53 canlbe employed for securing thelyoke tothe rack bar; Thefjextrem'e lower end of the rack bar. is slotted as-atfiet to )rovide a casin for the rece ti'on ofan,

BXPEUlSlOIl coil spring 55 which bears against at itsupper end. This, spring 55 normally, functions to project the centering pin 57 beyond the lower concave d face 51 of the head and I lay particular stress on the .for-

mation of this head and pin'an of will be clearly set forth. l M 4 ,The lower leg 17 of the trame carries a foot60. whichmay include a pair of resilient.

inner. endsfas at 62, to said -leg l7; -The resilient arms 61 adjacentto theouter ends thereof are bowed in oppositedirections as 5 M1 63 and the loweredges of the bowed por- 1" U tions are provided with inwardlydirected V arcuate flanges 64. The extreme outer endsof 1 the resilient arms beyond the bowed portions can be flared outwardly. at oppositediree tions as at 65. The axial center ofthefoot 60*hetweenthe bowed portions-63 of the. arms is located in directaxial alinement with the centeringpin 57 and theentire' construction ofthe tool is'such that these parts will be held .in proper axial alinement at all times,

. In userof myimproved tool; when itis dewasher therefor,.;after which the crank'is rO- tatedfin the desired .directi'on forzhr'inging the head 50 and the foot toward-'on'eanother. 7 This will ,compressthesprin'g around the valve stein and lift thesame ofl' ofthe, holding pin which can now'be conveniently G3 removedQ Referring ,to Figure :2 'of the' drawings, the use of the tool cant be readily seenand a fragment 'oi'f'the englnej blo ck is indicatedby the reference eharacter while; r T the valve" and valvestem are indicated by the reference numerals'66 and '67. The spring is that the'cran'k can be disposed out of the way of parts of the engine t'o permit. the free v ai collar 56,- at its lower end, formed'on the centering pin.57, and against the rack bar.

' dome 7 0 is disposedbetwee'n the resilient arms d the usethere arms 61 bolted or otherwise secured atgtheir so" as-t'o-jhold the spring in its'compressed condition.- The holder in the present instance to' hold iand 'ce'nterfthe spring during' the .tated for bringingthe domeand the headi51 toward one another, ;which v willhring about the compression of the spring. The hooked terminals'ofjthe clip engage'inthe slots @72 and act againsttheinclined walls; 7 3 of said shown at 68 and the cross pin carriedby the. stem' '67 for the spring 68 is shown at-69..

After the spring hasbeen compressed to :the. desired tension and lifted from off of the" pin-69, the crank 31 of theja-m nut is turned 76 so as'to bring thenut andthe pinion in fries tional leontact with the friction faces -32 of the turret head," which will lockthe rack bar against further movement and'thereby permit the -operator to use both hands for remov- I ing the pin 69 or any otherwork that is to be" done'.

By my arrangement of turret'head 19, the same can befreely t'urned on" the frame, so:

manipulation thereof and the turret'head also forms means whereby-the'crank can be I disposed on eitherside of the frame forrightj orleft hand workmen. g

r My tool is also adapted for use in spring re-I: placements and can be used. asfan efli'cient means for recompressing valve "springe Whenthe tool is used-for thispurpose the Glof the foot 60 in the bowedportions 63 thereof and thisdomeis of conical shape and includes a shank '71 which engages between said arms 61. The'conical face of the dome at opposite diametr-ical points is 7 provided i'with' slots-72 and the inner walls of'these slots-are flared as at 7, 3 for a purpose which willbelater described. VV-hen-a spring is to be compressed, a clip holder 74 is employed, A 1'00 includes side resilient strips 75 having their terminals at one end providedfwith hooks 76 for-successively engaging the convolutions of the spring during the compressing thereof.

The opposite endsofthe arms can be inturne'd as'at 7 7 and secured tothe legsjof a U-shaped resilient handle 7 8.: The lower; end ojf the spring is' placed over theconical dome 70" while the centering pin 57 is placedin the spring through the clip and this pin 57fu'nc-i tions to hold the spring in placeagainst acci" I dental displacement and the conical'head acts compressing thereof. This effectively elimi= 1315 nates bulging ofthe spring and the working .ofthe spring efi'foenter. Afterspring placed in position, the crank can now be Tosletsw-hich help to hold the clip in proper po- Sitionand'the hooks :tofen'gage the spring j convolutions; *Aftef the spring is com-f pressed,.the rack canbe fed up an'dthe spring i and v holder removed from; the 001. The spring 'in its compnessed condition infthefISo then held in its adjusted position.

lower face of the collar 42-, the upper face of which and the lower face of the head can be provided with mating teeth or serrations 81. By this construction, by loosening and tightening the nut 80, the head can be turned and I can also provide means for adjusting the resilient arms61 of the foot 60 toward and away from one another and. in Figures 14 and 15 I have illustrated one means of adjusting said arms.

.This means consists of an adjusting bolt 85 which is extended through the arms and the bolt has threaded thereon a winged nut 86. Upon manipulation of the nut 86 on the bolt the arms can be moved or adjusted. In order ,to prevent turning movement of the bolt during adjusting ofthe winged nut, the head of the bolt can be provided with lugs 87 which can be received in slots 88 formed in one arm. 7

Other changes may be made without departing from the spirit or the scope of the appended claims, but:

hat I claim as new is: V 1. A spring compressor and replacer coma rising a frame, a foot carried by the lower end of the frame, ahead rotatably carried by the upper end of the frame and in axial alinement with said foot, a rack bar slidably carried by said head, a pinion rotatably carried .by the head for actuating the rack bar, and

means for holding the headin an adjusted position on the frame against accidental turning movement.

'2. A spring compressor and replacer com- .prising a frame, a foot on the lower end of the frame, a rack bar slidable toward and away from the foot and in axial alinement therewith, a head shdably receiving said rack bar and rotatably supported by the upper end j of the frame, operating means for the rack bar carried by thehead, and means for lock ing the head in an adjusted position on the frame against accidental turning movement.

3. A valve spring compressor and replaeer comprising a frame, a foot carried by'the lower end of the frame, a collar carried by the upper end of the frame, a turret head having a longitudinal passage therethrough, a rack bar slidablymounted in said passage in axial alinement with said foot, a shank portion on the lower end of the head rotatably mounted in said collar, said extension defining a shoulderengaging the upper edge of the collar, a nut on said shank portion for engaging the lower edge of the collar, and 0p:

erating means for the rack bar carried by said head.

4. A valve spring compressor and replacer comprising a frame, a foot carried by the lower end of the frame, a turret head rotatably carried by the upper end of the frame in axial alinement with said foot, means for locking the turret head in an adjusted position against turning movement, a rack bar slidably mounted in said head in axial alinement with said foot, means for raising and lowering the rack bar, and means for locking the rack bar in an adjustedposition.

5. A valve spring compressor and replacer comprising a frame including substantially parallel upper and lower legs, a foot carried by the lower leg, a collar carried by the upper leg in axial alinement with said foot, a turret head having a reduced cylindrical shank rotatably mounted in the collar, a nut ring threaded on the lower end of the shank for engaging the collar, the shank having an annular groove therein, a set screw carried by the collar for impinging against the walls of said groove, a rack bar slidably supported by the head arranged in axial alinement with the foot, and a pinion carried by the head for operating said rack bar.

6.. In a valve tool compressor and replacer, a head having a passage therethrough, and tearing openings at one side of said passage, a rack bar slidably mounted in said passage, a transverse shaft havingbearing'portions rotatably mounted in said bearing openings, a crank for actuating the shaft, apinion confined on said shaft between said bearing portions meshing with the rack bar, and a lock for said shaft for holding the rack bar in an adjusted position including a jam nut threaded on said shaft for engaging the head and for bringing the pinion into frictional lockinwengagement with said head.

A spring compressor and replacer comprising a frame, a foot carried by the lower end of the frame, a head carried by the upper end of the frame in direct axial alinement with said foot, the head having a passageway therethrough and bearing openings at one side of said passageway, a transverse shaft having bearing portions formed thereon rotatably mounted in said bearing openings a crank for operating the shaft a pinion secured to said shaft between said bearing portions, the head having the inner and outer faces thereof at one bearing opening being provided with friction ribs, the inner face of the pinion being concaved for engagement for one rib, a jam nut threaded on said shaft having an inner concave face for engaging the frictionrib, on the other face of said head, and means for turning the jam nut on the shaft in intimate engagement with said head, as and for the purpose specified.

8. In a. spring compressor and replacer, a head having a longitudinal passage therethrough and bearing openings on one side of the passage, a rack bar slidable in said passage, a shaft having bearing portions of different diameters rotatably received in said bearing openings, one of said'bearin'gportions defining an annular shoulder, the shaft being provided with right hand threads between said bearing portions, a pinion threaded on said shaft in engagement with the shoulder having the face thereof opposite to the shoulder'concaved, the shaft being provided with an extension beyond one of said bearing portions, a crank connected with the shaft for rotating the same, said threads being opposite to the first mentioned threads on said shaft, the inner and outer faces of the head around one of said bearing openings being provided with friction ribs, a jam nut threaded on said shaft having its-inner face concaved, and means for turning the am nut in intimate contact with the head for moving the concave faces of the pinion and nut into pressed centering pin carried by the axial center of said working head. 7

10. In a spring compressor and replacer, a

sliding adjusting member, a head of substantially disc-shape carried by thelower' end of said sliding adjusting member havinga cone cave lower face, and a spring pressed axially v disposed centering p1n carrledby saidwork engaging head. i

11. In a spring compressor and replacer, a frame, afoot carried by the lower end of said frame, a headcarried by the upper end of said-frame, a sliding member associated with said head, means for raisingand lowering said sliding member, a work engaging head carried by the lower end of said sliding member, and an axially disposed spring pressed centering pin slidable through said head.

12. In a spring replacer and compressor,

a head, a sliding adjusting member, an operating means for said member directly en-fl gaging the same, and a lock for holding the adjusting member in adjusted position engaging the head and urging the operating means into frictional contact with the head.

In testimony whereof I affix my signature. 7

J O SEPH E. WAINWRIGHT.

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