US1636046A

US1636046A - Valve-spring removing and replacing tool

Info

Publication number: US1636046A
Authority: US
Publication date: 1927-07-19
Anticipated expiration: 1944-07-19

Description

July 19 C. E. DANELS-v VALVE SPRING REMOVING AND REPLACING TOOL 2 Sheets-Sheet 1 Filed OCb. l5, 1925 70 auf C. E. DANIELE VALVE SPRING REMovING AND REr LAc1NG Tool.

. 1925 k.'2 Sheets-Sheet 2 Filed OCB.

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Patented July 19, 1927.

UNITED STATES i 1,636,646 PATENT orifice.

CHARLES E. DANIELS, 0F ATCHISON, KANSAS.

VALVE-SPRING REMOVING AND REPLACING TOOL.

Application filed October 15, 1925. Serial No. 62,601.

This invention relates to devices or tools for compressing the valve springs ot' internal-combustion motors tor the purpose ot removing the valve, and also to assist in replacing the spring when the valve to be put back in lace.

One oi: the o`jects oi" the invention is to provide a tool having a relatively wide range oi adjustment thereby permitting ot its use 'in connection with valve springs ot motors of various types, and which is easy to operate. In that connection it is also proposed to provide a tool in which all oit the parte are accessible thereby facilitating repairs or replacements, and also taking apart thereby to be conveniently placed in a tool kit or box.

A further object of the invention to provide a quick-acting tool that may be conveniently held in one hand and operated by the other, all olEl the 'lorce due to lthe compression ot' the springs beine' supported by a motor part instead of by the operator. T hat is to say,` it. is proposed to provide a tool whose weight, as well as the compressive force oi the spring is supported by a motor part While the relative movement ot thecompressing part o1' the tool is eiiected by a lever Which is very readily manipulated.

With the above and other objects in view which will more readily appear as the na ture of theinvention is better understood, the same consists in the novel construction, combination and arrangement ot parts hereinafter more fully described, illustrated and claimed.

A preferred and practical embodiment ol the present invention is shown in the accompanying drawings, in Whichz* F ig. l is a side elevation illustratingthe `ap lication of the tool;

Fig. 2 is a horizont-al sectional Vview taken on `the line 2 2 of Fig. l;

Fig. 3 is a vertical sectional `view taken onthe line 3%-,3 ofk Fig. l;

Fig. 4 is a View similar to Fig. l showing the manner in which the tool is manipulated to re lace the spring preparatory to replacing tie valve;` and Y Fig. 5 is a horizontal sectional view taken on the line 55 of Fig. 1.

Similar reference characters designate corresponding parts throughout the Vseveral iigures of the drawings. l

In its General organization the present tool inclu es a main compressor trame A comprising a compressor bar l having a handle 2 at its upper end and an angular otlset arm 3 at its lower end, while the intermediate portion thereotl has the bracket -l adjustably litted thereto. The end of this bracket opposite the bar l is equipped with the rack bar 5 which is engaged the hoiding detent 6 pivotally mounted on` the bracket and also by the manipulating lever if, will presently more fully appear in detailM The hracketl which may be of the subsinntiaily i-i-shaped formation shown, is provided at one end with the sleeves or guides i ior slidably receiving the racksbar :3 while the opposite end thereoil is provided with the guide straps el which slidably embrine the shank et the bar l. One oi the is ma be provided with openings 'for i ,L .s g with the openings l in the bar thereby to permit oit inserting a .fastening a to hold the bracket; at any selected point aiong the length ot the bar. The holding detent i3 is pivoted to the bracket as, indi- (Wand has a handle portion 6b cated which is normally pushed away lrom the traine t by the lea't spring s. This pawl is adapted to engage with the teeth oi the rackbar to hoid the bracket in the desired elevated position on the rack-bar, and upon being moved against the tension of the spring s, it is withdrawn from the teeth of the rack-bar thereby to permit of the bracketdescending "toward the point or toe ot' the rack bar.

rifhe manipulating lever is preferably rebent into substantially loop formation and is pivoted to the bracket as indicated at 7,

`The said pivot is located relatively close to the spring tensioned pawi 7b which engages with the rack teeth to elevate the compressor bar l with reference to the rack bar, and as shown in the drawings, the-said paWl 7 may be provided with a thumb or 'finger manipulating extension 7"', which may beV moved in the direction ot the arrow to withdraw the pawl 7b irom teeth of the rack 5 simultaneously with the Withdrawal of the detent o to permit the bracket to be lowered or moved toward the point of the rack-bar. This arrangement enables the operator 4to grasp the bracket in such way that his iingers may grasp the handle 6l of pawi G while his thumb may operate the lever 7 to thereby quickly release both pawls trom the rack and permit quick relUU iur

moval of the tool to the next valve position.

The looped end ot the lever 7 provides a handle H which enables the operator to readily grasp the lever' and by relatively Slight movement effect the elevation ot the compressor bar with reference to the rackbar when it is resting upon a support.

To assist in positioning the tool on the top ot a valve or the like the rack-bar is provided with a handle 5, thereby aiiordii'ig ample handheld facilities for positioning and handling the tool during use.

The angular portion 3 ol' the compressor bar is provided with a fork termed. by the spaced members 8 8 which are secured to the arm 3 by the astenings 9 and cooperate with a resilient washer and spring gripping clip l() having the spring lingers il for itting over and engaging the washer ant lower coil of the spring thereby to hold the same and prevent accidental dropping out when the tool is removed. 'that is to say7 when the tool is removed from its work the spring will stay with the tool until manually detached.

By referring to Fig. l the manner ot operating the tool to compress and remove the valve spring will be readily apparent.

However, it may be pointed out that after the bracket el is adjusted to the desired position on the compressor bar l the rack bar 5 is positioned on top ol the valve and the bracket is also placed sutiiciently low on the rack to obtain necessary travel of the bracket to compress the spring to be removed. /Vith the device arranged and positioned as shown in Fig. l, the handle ll' may be moved upwardly in the direction of the arrow in Fig. l thereby to move on the pivot 7a and lift the bracket Ll thereby carrying the compressor bar 1 upward. The detent (j holds the bracket elevated anc prevents downward movement and therefore continued reciprocations of the lever 7 will elevate the compressor trarne consisting of the bar 1 and the bracket 4 and thereby com press the valve spring due to the fact that thelork 53--8l is engaged beneath lthe washer which supports the spring. ritter the cot ter-pin which supports the spring washer has been removed, the tool may be moved so that the arm 3 will rock away i'rom the valve stem thereby to release the spring and permit the valve to be removed when the rack 5 is removed from the top thereof.

When it is desired to replace the valve spring before the valve itseltl is placed back in its seat, they cone plug P shown in Fig. Ll, may be utilized for centering and holding the point of the rack bar 5. The manner of replacing the valve spring is illustrated in tull lines in Fig. hfl, wherein it will be observed that the washer and springkeeper portion ll holds the washer against the end of the spring as the lower end of' the latter is moved over into alinement with the upper end which has been slipped over the valve guide of the motor block. After the valve spring has been initially positioned over the valve guide the cone plug i) may be removed and the valve put in its s at. rl`he spring may then be compressed while surrounding the valve stem by the ma nipulation oi' the lever 7 so that the lower end ol' the spring will be lifted above the cotter pin hole in the valve stem thereby to permit ot the insertion oit the cotter-pin.

connection with the cone plug l? it is pointed out that the same is preferably made ot br es, copper, or other sott material which will 'not inar 'or scratch the valve seat which has been previously ground to provide a pi'op' '-l tor the valve. 'ibis cone acts as a protector tor the valv seat during the spring replacing operation. Without the ug it would be diiiicult to locate a proper ace for the point ci the rack member 5 to rest on, and furthermore since the tool is made ot tool-hardened steel it would be lilrely to strike the valve seat and dent it or otherwise mar it. Also the relatively conical inner tace of lthe plug makes it possible to nnniipulaie the end ot' the rack-bar freely in any direction to replace the spring.

ii'ithout further description it is thought that thc features and advantages of the intion will be readily apparent to those snilled in the art, and it will of course be understood that changes in the form, proportion and minor details ot construction may l resorted to, \\'ithout departing troni the spirit oi the invention or scope o1 the tippen-:led claims.

l claim: l. A valve-spring compressing tool comprising a main compressor frame including a compressor bar, a bracket, a plurality o' pivoted rack-bar engaging detents carried by said bracket, a rack-bar carried by the bracket, and a lever carried by the bracket and engaging said rack-bar whereby the trame may be moved relative to said rackbar.

2. A valvespring compressing tool coinprising a main compressor traine including a compressor bar having an offset spring enga ging portion at one end, an oii'set brac ret adjustably engaging with the upper end of the said bar, a rack-bar slidably mounted in the bracket.y a detent carried by the bracket ada pte-d to engage said rack-bar7 a lever pivoted to the bracketand having a handle extending beyond the compressor bar` yand a spring-pressed pawl pivoted at the end ot' said lever and engaging with the rack.

3. A valve-spring compressor. comprising an angular compressor bar having valve= spring en g iging means and a handle, a rackbar disposed parallel to the main shank portitl tion of the compressor bar, and a bracket adjustably connecting the compressor bar and rack-bar and vertically adjustable with respect to each of said bars, and means carried by the bracket for moving the compressor bar relative to the rack-bar.

A valve-spring compressor comprising a compressor bar of angular formation having a spring-engaging fork at one end and a handle at the other end, a rack-bar, a bracket of substantially H-sliaped formation to provide spaced guides for slidably engaging with the rack and` adjustablyengaging with the shank oi the compressor bar, a rack-engaging detent carried by the bracket, and a lever having a pivoted rack-engaging pawl pivoted to the bracket and having a handle located relatively remote from the pivot.

5. A valve-spring compressor comprising a main frame consisting of an angular conr pressor having a spring-engaging fork at one end and a handle at the upper end, a bracket connected to the compressor bar adjacent the handle, a 'rack-bar slidably adjustable in the bracket, means for preventing retrograde movement oi' the bracket with reference to the rack-bar, and a lever-- actuated pivoted pawl carried by the bracket and adapted to elevate the same with reference to the rack-bar.

A valve-spring compressor comprising a main frame including a compressor' bar having an offset arm provided with a spring Washer-engaging 'fork portion and also having a handle at its upper end, a bracket adjust-able on the shank of the compressor bar, a .rack slidably guided in the bracketopposite the compressor bar, a detent pivoted on the b acket and including a rack engaging portion and a relatively long handle portion underlying one edge of the bracket, a manipulating lever of loop liorniatioi'i to provide opposite arms pivoted to the bracket and providing a handle extending to one side of the compressor bar, and a pawl pivoted to the ends ot the arms o t said lever and adapted to engage with said rack.

T. A valve-spring removing and replacing tool comprising in combination, a lnain l'raine, a bracket adjustable on the main frame, and a rack adjustable in the bracket, adapted to cooperate with a valve-seat protecting plug having a recess for receiving the end of the rack-bar thereby to assist in replacing the spring in position after the valve has been ground.

8. A. valve-spring removing and replacing tool comprising in combination a main traine, a bracket adjustable on the main traine, a rack adjustable .in lthe bracket adapted to cooperate with a valve plug including a stem and a body portion of relatively soft metal, said body portion being of generally conical formation and having a conical recess for receiving the end of the rack-bar thereby to assist .in the manipula* tion of the tool during the spring-replacing operation.

In testimony whereof .l hereunto allix my signature,

CHARLES E DANlELS-