US2204309A

US2204309A - Device for holding valve keepers

Info

Publication number: US2204309A
Application number: US194011A
Authority: US
Inventors: Hildenbrand Frederick
Original assignee: Individual
Current assignee: Individual
Priority date: 1938-03-04
Filing date: 1938-03-04
Publication date: 1940-06-11
Anticipated expiration: 1957-06-11

Description

June ll, 1940. F. HILDENBRAND 2,204,309

DEVICE FOR HOLDING VALVE KEEPERS Filed March 4, 1938 v Il 2a l 15 12,2319 0 3 l; [6311 5 A oRNEx "Hao " l vI )ler'nent in proper loperative relationl and positionaarid to permitl the; proper action ofjthe. parts to attain thelplacing of ,keepers with Aease Patented june i keepers.v e Y f e l. v

is a further.` ohje'ctto presenta'novel*conf f .i.lbnvlonrron,HoLDiNGNAIJvEjKEEBESl 1,' Y rfaga-'15e nilqentranagi stomach; ycanili f "The'invention relatesto'meanstofacilitate the v tO 11- i and muchlo'ss of tirneitoffsayynothing of `thelper-` sonal injury suffered bythe lingers 'of the worker.

heccminggcaught asthe valve-springis released.

tion'to providea'slender pliers devicefwhich will hold 'the keepers inproper" spaced relation-ith .pass

on each rside of the valvestern, andftopresen't theni on 'the stem'while thezfspringf-valve cornlpressedv thereabove-is released with itsseat collar so that the latter engageslproperlyfaroundnthe struction vin means -to holdthe parts of irn-v limplement;"- l Figure 3 is a'iragmentary top View showing `the f extreme end portions offthe jaws' withthe fkeep-` oro 'Additional obj ects'," Vadvantages and kfea'iairesv of invention reside in .the construction, 'arranger'.

ment andcombination or parteinvolvedl inl fthe embodiment @ftheVim/ergehen,` as Wiuappear from `the following `vdescription and-accompanying "drawing" representing full "siz'e'j one vof the- 4pos--` j sible forms ofv the'd'evicjas heretoforev actually used. In' the drawing', ,o Figure 1 is a top .View offan implementemloody-v .ing theinvention' in inoperative position; -f v VFigure 2,1`is `afhorizontalfsection thr ers engaged inthe device, and as'finitially pref sented to'fthe valve stem.

Figure 4.- is asideviewof Figure 3, snowing the seat collar and valvespringg y Figure'f is a viewv smilarto- Figure 3, showing the faction of j the `device 1 in applying 'thefkeep'ers tothe stem in an initial stage."` l FigureGjis asimilar View` showi of the' emplacement of the lrleepersvv There is illustrated a' ypa1r o1" pliers formed'of sheet metal and c'omprising'two opposedfjawsj l5 of identical complementary frmgfU shaped in `cross section and having integralhandle portions il continuedv therefrom,"ears l2 rloeing-Tformedas inward extensions from ythe' ledgesgof' the' f-niem. bers at the-junction of the jaws and thandlea. on each side,:softhatthere'are four vears. rI"hese arev -It'is therefore an' important aimoi the inVen-k proper" operative. position 'andso hold f .the `pintle ugh the ng l completion yclosed, including a helix arran'gedloosely around If3,and arms-1 5 extending divergently yconnectedhyxra commonxpintlebolt I3 extended Ithere'through'v.` vTheja'ws are tapered suitably'to .avoid bulkiness atthevextremities vand yet ampley ruggedne'ssfor rough .usagein the machine'shop, Vand-When closed asin .Figure f1, their inner edges rare-parallel; while ltheirjouterysides diverge` sligl'itly .from their :extremities toif'the pivotgfand .frornwgthis `.partthethandles .Ina-y. diverge Sat y.a .greater.angle'if` desired;v Their dimension .over .ally on ,theiry major transversel dimension at the pivotisa littleioverioneginch and 'with'. keepers n -finplac'eithehextremities-areiabout3A rinch wide,

' soithat-.theyido notl occupy .much space within 'a valver pox,y when in.` use.` v A .spring I 4 vis `.provided tovkeepithe, handles yieldingly apart and the. jaws within Athe blight portions-f of.A respective handles.

v'The 1 extremities of the jaws f arershaped to pre- '.sent opposedy vcurved-cl'arriping members l? or.

fcup,g.parts,the v jcontinuation;.o-f the lowerside portion of thebody lower side-being formed with a fotvthe jaw forming 'a .step` flange i6 on which v a keeper may'- restwhen `engaged therein, the intermediate part being slightlyo offset k:and the :flangev may extendfupwardlyfrom thefdevice'. ,30

The eurvedpartsfl maybe slightly linclined `in .Slidablebetween the jawsv there is `a plunger Y* orvspacer "18 @formed from a; blank having sub- "stantiallythefshape of across,.the stem 1970i and immediately'adjacent the plane of the Aflanges IB. -Stops'22 .arel-providedat the ends of the arms I toj'limitiopeni'ng movement ofthe jawsl andpreventthearms A2| from becoming disengaged;l .The bodygportionU of` the plungeris hat" "fr-throughout, but attlfie forward end "yond -.the arms o portion be- 2lV sidefportions 23Uare-vbent upwardin parallel relation `forming anges which will :receive the vvu`pper \f, dge vportions ooi the' jaws inwardlyofthe cup parts slidably thereagainst,4v @at times; 1 movement ofthev plunger outward, 'so thatv when 4pressed `forward it stops with vits extremity between the` outerfextrenties ofthe jaws, as in Fig- The slot 2,0 is of a length to limit `@upper part valcove-the "flange I6 curved soU as.to Ipartlyencirclea-keeper; n The cup partsareopen `1 atthe upper side .so thata 'keeperresting on the whichfis longitudinallyaslotted.'atA Zllandhas the pintlel I3 engaged therethrough, while. the lateral j arms. 2,1 are projected!r through vlongitudinal slots. 1 j 12| ingthe'jaws, sothat'theplunger is held in 'plane 'parallelftogthef'n'iajor plane of the devicev ure 2, and on retraction the plunger is stopped inwardly of the cup parts of the jaws, as in Figure 1. The outer end of the plunger may be slightly recessed as at 24', so that it may be easily steadied against the side of a valve stem in the use to be described.

The inner end portion of the plunger, between the handles II and at a suitable short distance from the ears I2 is bent upwardly at right angles and extended a distance above the handles, forming a rounded transverse nger-piece 25 by which the plunger may be manipulated as required. Pivoted on the pintle I3 over the forward part of the plunger there is a keeper or latch lever 26 which is extended rearwardly between the handles through a suitable slot 21 in the upturned finger piece 25, in which the lever is slidable. The lever is notched on one side as at 28, to receive the edge portion of the finger piece 25 therein when the lever is pressed in that direction, and the lever is extended rearwardly from this notch a distance greater than the length of the slot 20, so that it is always retained in the linger-piece. The lever 26 has an arm 29 p'ositioned at an angle less than 180 degrees extended forwardly beyond the pintle I3 between the jaws and curved laterally toward the same side in which the notch 28 is formed; and anchored to the apertured extremity of this arm there is a contractile spring 3U, engaged with a hook 3l struck from the forward part of the plunger I8, so that the latter is held yieldingly at the rear limit of its movement when the notch 28 is disengaged from the finger-piece 25, and will be r drawn rearwardly from its forward position when the latch lever is moved to released position. The lateral curvature of the arm 29 causes thenotched edge of the latch lever to press against the adjacent edge of the slot 2l, so that when the plunger is pressed to forward. position, the latchlever will automatically engage and hold it so extended.

The plunger is preferably made with a width between the jaws I equal to or slightly more than the diameter of a valve stem. The keepers referred to are illustrated at 32, and are used in place of the pin formerly inserted through the valve stem to support the valve spring seat orwasher. The valve stem 33 is necked or reduced in diameter near its extremity as at 34, forming a recess or channel around the stem. The keep,- ers are substantially a diam-etrically split conical collar set in the neck with the smaller part toward the spring 35, and are engaged in a onepiece collar 36 internally tapered to receive snugly the tapered outer faces of the keepers therein. The collar 36 is extended within the spring slightly and flanged to aord a proper seat for the spring, as is known.

In the use of the invention, for emplacement of the keepers, incident to engaging the valve spring in proper operative relation to the valve, the valve is put in place, the spring 35 and collar 36 adjusted therearound with the collar raised above the neck of the stem by a valve spring lifter 3l. The neck 34 is thus exposed for emplacement of the keepers.

The jaws Il) are opened and the finger-piece 25 pressed forwarduntil the latch 26 engages,

and then the handles are compressed while the finger piece 25 is pressed first to one side and then to the other, allowing insertion of the keepers in the cup parts at respective sides of the plunger. The tool may be manipulated with one hand in this operation, while the other hand of the user is employed to insert the keepers properly in place in the tool. Both keepers will now be held pressed by the respective jaws against opposite rsides `oi the plunger, by which they are held spaced apart at their normally meeting sides surliciently to admit a valve stem therebetween. 'Ihe tool is now presented to the valve stem so that the notched end of the plunger abuts the side of the valve stem at the lower part of the neck 34, resting on the shoulder 38 forming the lower limit of the neck. Without compressing the handles, pressure is applied to the rear side of the finger piece 25 just suflicient to balance the tension of the spring 30, and the latch lever 26 pressed to released position. The pressure on the finger piece is then relieved sufciently to allow the tool to be moved forwardly while the spacer draws inward as in Figure 5, which is 'done,'the tool moving the keepers beside the neck portion of the stem 35. The spring I4 causes the jaws to continue inward pressure, serving to press the keepers inward against the plunger and the neck upon which they slide until they meet at the far side. Forward movement of the tool is then discontinued, while the plunger is allowed to be drawn from between the keepers, when they will be snapped together by the jaws of the tool under action of the spring I4. My tool is left so engaged with the keepers while the spring lifter 31 is operated to lower the collar around the upper parts of the keepers and the collar is allowed to press the jaws of the tool downward or the tool is pressed downwardly manually until it `clears the keepers, at which time the collar will be so closely engaged with them as to retain them until they come to a seat within the collar.

In regulating the movement of the spacer from While in grasp. This avoids accidental pivotal movement of the handles which may occur if they are retained both within the grasp. Also, the forward part of the device'may be grasped Y between the thumb and forenger as at B, Fig.

2, just back of the arms 2i, and the slip of the spacer regulated by the pressure of the iingers against'the jaws, as a brake, allowing the jaws to graduallyslip forward.

I claim:

1. A device `of the character described comprising relatively movable clamping members having shank portions longitudinally slotted and pivoted mountings therefor, a spacer longitudinally slidable between the clamping members and slidably mounted with respect to said mountings, and having arms extended through the slots of respective Shanks and beyond, said spacer having an operative piston when moved to a position between the clamping members whereby to hold the clamping members apart, said clamping members and spacer being constructed to permit closing of the clamping members when the spacer is at the retracted or inoperative position. v

2. A device of the character described comprising relatively movable clamping members and means tooperate them, a spacer longitudinally slidable between the clamping members and including a right angular portion having a extended position, the device may be grasped by slot, a lever device pivoted on the spacer and direction of said edge and notch, and a spring' connected between the extremity of said arm and the spacer, for the purposes described.

3. A device of the character described comprising pivoted jaws having opposed cup p0rtions atv their extremities and having operating handles oppositely extended from the pivot,

lspring means to close the jaws, a spacer slidable longitudinally between thejaws having an inner part longitudinally slotted, said pivot inm cluding a pintle through the slot', a lever pivoted on the pintle beside the' spacer, the inner part of the spacer having a-nger-piece extended. laterally of the plane of oscillation of the pivoted members, said lever having a notch to engage one edge of the finger-piece as a detent, said lever further having an arm extended obliquely of the path of sliding movement of the spacer and a spring connected between the extremity of said arm and the spacer, tending to draw the spacer to one limit of its movement, and said arm being inclined a direction to cause said notch to be pressed toward said edge of the ngerpiece.

4. A device of the character described cornprising jaws having opposed cup portions at their extremities andr having oppositely extended operating handles connected thereto, spring means to close the jaws, a spacer slidable longitudinally between the jaws and having a laterally presented edge portion, means vto hold the spacer in slidable relation between the jaws, a lever pivoted inwardly of the jaws forwardly of said edge portion, said lever having a notch extending from one side thereof to engage said edge portion at times and having a forwardly extended arm obliquely extended with respect to the lever in the same direction as the notch, and a spring connected between the extremity ofthe arm and the slide whereby to draw the slide rearwardly and press the notched side of the lever against said edge portion.

FREDERICK HILDENBRAND.