USRE19414E

USRE19414E - Valve spring compressor

Info

Publication number: USRE19414E
Authority: US
Publication date: 1935-01-08

Description

I. J. CLARK Jan. 8, 1935.

VALVE SPRING COMPRESSOR Original Filed Nov. 14, 1951 2 Sheets-Sheet l a 8 3 w W a z M 1!... g w 3 .J 0 a W 3 2 a 5 u 49 9 a ,9 M M 2 z m Jan. 8, 1935. l J. CLARK Re. 19,414

VALVE SPRING COMPRESSOR Original Filed Nov. 14, 1951 2 Sheets-Sheet 2 gwuentoz Lidia/"Ia Reissued Jan. 8, 1935 UNITED STATES 19,414 VALVE SPRING COMPRESSOR Ira J. Clark, Fort Morgan, 0010.

Original No. 1,871,498, Serial No. 575,121, cation for reissue Au 738,843

November 14, 1931.

dated August 16, 1932,

Appligust 7, 1934, Serial No.

8 Claims. ((129-863) This invention relates to a valve spring compressor for use in assembling or repairing internal combustion engines, and has for its principal object the provision of a device of this character which will be adaptable to a wide variety of differenttypes of invention; which can be rapidly and easily placed in position without interference with automobile hoods, tie rods, etc.; and which will compress relatively stiff springs with relatively little effort.

Another object is to so construct the lifter that it will automatically center and hold itself upon the valve head; so that it may be easily adjusted to valve stems of various lengths; so that it will be self-locking to hold the spring in the compressed position without the use of latches, ratchets, etc.; and so that it may be locked in any desired position of intermediate compression.

A further object is to provide a construction for the spring lifting extremity which will be sufficiently rigid to withstand the pressure of a spring of maximum strength, and yet will be of relatively light weight construction.

Other objects and advantages reside in the detail construction of the invention, which is designed for simplicity, economy, and efficiency. These will become more apparent from the following description.

In the following detailed description of the invention reference is had to the accompanying drawings which form a part hereof. Like numerals refer to like parts in all views of the drawings and throughout the description.

In the drawings:---

Fig. 1 is a side elevation of the improved spring compressor illustrating it in the open position ready for actuation to compress a valve spring.

Fig. 2 is a similar view illustrating the compressor in the closed position, maintaining the valve spring under compression.

Fig. 3 is a vertical section through the compressor, taken on the line 3-3, Fig. 1.

Fig. 4 is a detail view looking downwardly on the spring engaging jaws of the compressor. This view is partially in section.

Fig. 5 is a detail view looking toward the inner face of one of the spring engaging jaws. This view is taken on the line 5-5, Fig. 4.

Fig. 6 is a detail section, taken on the line 6-6, Fig. 1.

The valve spring compressor comprises a frame 1 consisting of a horizontal arm 2 and a vertical arm 3. The arm 2 is provided at its front end with valve head engaging means 4, the arm 3 extends downwardly from the rear end.

of the arm 2. The arm 2 is preferably straight, and the arm3 is longitudinally curved and has its lower end position directly below the rear end of the arm 2. The frame 1 is made from two .flat bars arranged in opposed relation and connected together by

rivets

5 and 6. Those portions of the bars constituting the arm 2 are designated 2a, and those portions'of the bar's constitutingthe arm 3 are designated 3a.

The arm portions 2a are laterally offset near 10 their front ends to provide a cylindrical socket 7 which extends vertically through the arm 2 and which is provided for the reception of a valve standard 8 constituting a part of the valve head engaging means 4. Bolts 9 provided with thumb 15 nuts 10 extend through the arm portions 20. at opposite sides of the socket '7, and provide means by which the sections of the socket may be moved toward each other or freed forv movement away from each other. The movement of the sections .20 of the socket '7 in the direction of each contracts the socket, and the movement of the sections of the socket away from each other expands the socket. When the socket '7 is expanded the standard 8 may be adjusted upwardly and down- 25 wardly on the arm 2, and when the socket is contracted the push rod is held against accidental movement from its adjusted position.

A lever 11 located below the arm 2, is pivotally connected at its rear end by the rivet 5, to the 30 lower end of the arm 3, and is provided at its front or free end with spring seat engaging means 12. The pivoted end of the lever 11 is located between the arm portions 3a, and curving upwardly from its pivoted end is an arm 13 which is also 35 located between these portions. The lever 11 and its arm..13 are also made from two flat bars, those portions of the bars constituting the lever being designated 11a, and those portions of the bars constituting the lever arm being designated 40 13a. Washers 14 are mounted upon the rivet 5 at one end of the lever portions 11a, and serve to .hold these portions in relatively spaced relation.

A hand lever 15 is pivotally connected at one end of the rear end of the arm 2 by the rivet 6, and normally extends upwardly and'rearwardly from its pivot. The hand lever 15 is made of two flat bars designated 15a connected together near their free ends by rivets 16 and 1'7, and held in spaced relation by washers 18 mounted on these rivets and the rivet 6. A link 19 located between the arm portions 30., is pivotally connected, as at 20, to and between the upper ends of the arm por- Lions 13a and is pivotally connected, as at 21, to

and between the lever portions 1511 at points close to the pivot 6 of the lever.

The standard 8 is of hollow formation, and is provided at its lower end with a foot piece 22 of hollow spherical formation and extending in all directions laterally beyond the push bar. A pin 23 having a pointed lower end;24 located .at the centerioi the :foot piece 22, is 'slidably mounted in the push bar 8 to permit the pin to move downwardly and upwardly with respect to the foot piece. The upward and downward movement of the pin 23 is limited by a pin 25 carried by and extending diametrically across 'tl'm push her 8 and also extending through a vertical slot 26 in the pin 23. The pin 23 normally-occupies aposition with its lower end extending ifbelow :the footpiece 22, and it is yieldingly held in this position by a spring 27 mounted in the push bar 8 between the upper end of the extending diametrically across the push bar 8,

The spring seat engaging means 12 compriss flaws 29 secured to "the front'ends of the lever 11. The jaws 29 are of channel formation and are arranged with their open sides in opposed relatier-1. The jaws 29 comprise shanks 29a which receive and-are "secured, as at 30, to the f-ront ends of the leverportions 11a. Shanks 29a. curve upwardly and forwardly and gradually decrease in Width or "vertical dimension "from their rear to their front ends. The jaws 29 also comprise spring seat engaging members 29h which extend --forwardly from the 'upper ends of the shanks 29c, and flanges 290 which extend upwardly from the "outer edges of the'spr ing rseatenga'ging members. The'Spring seat engaging members 29b and their 'flanges 290 form continuations of the lower flanges and the webs of the shanks 29a respectively, and are ohset laterally outward with re- 'spect to the shanks. The upper flanges of the Shanks 29a terminate at the rear ends of -the flanges 290. .As the shanks 29a are of channel formation, and as the spring seat engaging members 25b and their flanges 290 are formed integrally with the shanks, the jaws whil'eslim and trim are so strong asnot to yield undertheipressure necessary to compress the strongest valve Spring. The lever portions 11a hold the jaws 29 in relatively spaced relation ready .for applicato the spring seat. The distance between the jaws may be variediso as to adapt themior application to spring seats of difierent sizes through the medium of a bolt 31 passing through the 'leverportion's 11a andthe'jaw shanks 29a, the head of the bolt contacting with 'the outer side of one of the shanks, and a nut 32 on the bolt contacting with the outer side of the other shank. In practice, .to adapt the valve lifter for application to a valve, the hand lever 15 is'actua'ted to swing'the lever 11 into its lowest adjusted position with respect to the arm 2 if the lever '11 is not already in such position. The pin '23 extends below the foot piece 2-2, and during the initial phaseof the application of the compression the pointed lower end of the .pin is engaged with the valve head 33, and during the next final phase of the application of the compression the jaws 29 are engaged with the seat 34 of the valve spring 35. The pin 23 centers the foot piece 22 on the valve .head 33, and the jaw members .2927 and .290 contact with the lower side and edge, respectively, of the valve spring seat .34. The hand lever .15 .now occupies an upwardly .and rearwardly inclined Position, as shown in Fig. 1, and .it is swung from this position into a downwardly and rearwardly inclined position, as shown in Fig. *2.

pin and a pin 28 fixed to and! 21 passes from a point above to a point below the lever 'pivot 6, and the downwardly acting force applied-11:0 the :lever 11 by the compressed spring 35 acts through the arm 13 and link 19 against the hand lever F5 a direction which tends to R move this lever downwardly. Due thereto, and

as the downward movement of the hand lever 15 is limited by the rivet 16 contacting with the rearedgeaof the link 19, the lever 11 is positively held against accidental downward movement.

The foot piece 22 and the jaws 29 are thus held in "their adjusted and spring compressing position. All possibility-of the foot piece 22 becoming accidenta-llydisplaced from the valve 'head 33 is prevented by the engagement of the pin 23 with the valve'hea'd; There is no possibility of the spring compressor becoming accidentally displaced either while it isheing applied'or after its application and actuation to effect the compression or the spring. A loop 36 surrounding the vertical arm 3 andthe lever-arm 1-3 normally occupies a position close to the pivot 5 of the lever '11, as shown in Fig. 1. In this position thereof, the loop 36 will not interfere with the actuation of the lever 11. When conditions are such that thehand lever 15 cannot be swung into its lowest or locking position, the lever 11 is held-against downward movement from its adjusted position by the loop'BB which to accomplish this is moved upwardly from its normal position intoenibracing relation with their arms '3 and 13, as shown inFig. 2. The jaws '29 are slim and trim, maybe easily engaged with "the spring seat 34, and 'willwhen the spring 35 is under compression provide the greatest possible room for "the applioationpr removal of thepin =-or key-employed to support the spring seat on the valve stem. The channel formation of the {jaws 29 permits them to be made slim and trim and yet strong enough to compress the strongest valve spring. To release the valve :li'fter for removal -from "the valve it is only necessary 'to swing the hand lever 15 upwardly andaforwardly.

Having thus described the invention, what is claimed and desired secured 'by Letters Patent 1s:-

ing-a horizontal arm and a vertical arm extending downwardly from one end of the horizontal arm, 'valve head engaging means carried by the other end of the horizontal arm, a lever located below the horizontal arm and pivoted at one end to the vertical arm, spring seat engaging means carried by the free end of the lever, an arm extending upwardly from the pivoted end of the lever,;a hand lever pivoted at one end to the horizontal arm; and a link pivoted to the upper end of the lever arm and to the hand lever, at a pointclose tothe pivot of such lever.

2. In a valve spring compressor: a frame having a horizontal arm and a vertical arm extending downwardly from one end of "the horizontal arm, valve head engaging means carried by the "other end of the horizontal arm, a lever located below the horizontal arm and pivoted at one end to the vertical arm, spring seat-engaging means carried -1. In a valve spring compressor: a frame havby the free end of the lever, an arm extending upwardly from the pivoted end of the lever, a hand lever pivoted at one end to the horizontal arm, a link pivoted to the upper end of the lever arm and to the hand lever at a point close to the pivot of such lever, and a loop embracing the vertical arm and the lever arm and movable thereon into a position to hold the lever against movement and into a position to free the lever for movement.

3. In a valve spring compressor: a frame having a horizontal arm and a vertical arm extending downwardly from the rear end of the horizontal arm, the vertical arm being curved and having its lower end located below said end of the horizontal arm, valve head engaging means carried by the front end of the horizontal arm, a lever located below the horizontal arm and pivoted at its rear end to the lower end of the vertical arm, spring seat engaging means carried by the front end of the lever, an arm curving upwardly from the rear end of the lever, a hand lever pivoted at one end to the rear end of the horizontal arm and normally occupying an upwardly and rearwardly extended position on such arm, and a curved link pivoted to the upper end of the lever arm and to the hand lever at a point above and rearwardly of the pivot of such lever, the lever being adapted to be swung downwardly to swing the lever upwardly and adapted to occupy a downwardly and rearwardly extended position with relation to the horizontal arm with the pivot of the link below its pivot to hold the lever in its upwardly adjusted position.

4. In a valve spring compressor: a frame having a horizontal arm and a vertical arm extending downwardly from the rear end of the horizontal arm, the vertical arm being curved and having its lower end located below said end of the horizontal arm, valve head engaging means carried by the front end of the horizontal arm, a lever located below the horizontal arm and pivoted at its rear end to the lower end of the vertical arm, spring seat engaging means carried by the front end of the lever, an arm curving upwardly from the rear end of the lever, a hand lever pivoted at one end to the rear end of the horizontal arm and normally occupying an upwardly and rearwardly extended position on such arm, a link pivoted to the upper end of the lever arm and to the hand lever at a point above and rearwardly of the pivot of such lever, the lever being adapted to be swung downwardly to swing the lever upwardly and adapted. to occupy a downwardly and rearwardly extended position with relation to the horizontal arm with the pivot of the link below its pivot to hold the lever in its upwardly adjusted position, and a loop embracing the vertical arm and the lever arm and movable thereon into a position to hold the lever against movement and into a position to free the lever for movement.

5. A valve spring compressor comprising: a frame; a horizontal arm on said frame; a vertical arm extending downwardly from one extremity of said horizontal arm, thence forwardly to a termination below said horizontal arm; a first lever pivoted intermediate its extremities to the forwardly extending extremity of said vertical arm, thence curving upwardly on a contour simi lar to the forwardly extending lower extremity of said vertical arm; a hand lever pivoted to said frame; a link connecting said hand lever to the upwardly curvedextremity of said first lever; spring engaging means on the forward extremity of said first lever; and valve engaging means on the forward extremity of said horizontal arm.

6. A valve spring compressor comprising: a pair of similar, spaced-apart, U-shaped frame members each having a relatively long upper horizontal arm; and a relatively short lower horizontal arm; a compressing lever pivoted intermediate its extremities between said frame members at the extremity of said shorter arms; a hand lever pivoted between said frame members and extending rearwardly therefrom; a link positioned between said frame members and connecting said hand lever to one extremity of said compressing lever; spring engaging means on the other extremity of said compressing lever; and a valve engaging member clamped between said two frame members adjacent the forward extremities of said longer horizontal arms.

'7. A valve spring compressor comprising: a frame; a horizontal arm on said frame; a vertical arm extending downwardly from one extremity of said horizontal arm, thence forwardly to a termination below said horizontal arm; a first lever pivoted intermediate its extremities to the forwardly extending extremity of said vertical arm; a hand lever secured to and extending rearwardly from said frame; a link extending from said hand lever to the rearward extremity of said first lever; a spring engaging member on the forward extremity of said first lever; and a valve engaging member on the forward extremity of said horizontal arm, the connecting point between said link and said hand lever being positioned so that it may be swung between the pivot of said hand lever and the rearward extremity of said first lever toprovide a dead center or looking position.

8. A valve spring compressor comprising: a U- shaped frame consisting of a vertical portion connecting two horizontal portions, the lower horizontal portion being shorter than the upper horizontal portion; a lever extending forwardly from a pivot at the extremity of the shorter lower horizontal portion, the rearward extremity of said lever extending upwardly within the outline of said U-shaped frame; a hand lever pivoted to said frame and extending normally upward therefrom; a link connecting said hand lever to the upturned extremity of said first lever, said link being positioned within the outline of said frame; valve engaging means at the extremity of said upper frame member; and spring engaging means at the forward extremity of said first lever.

IRA J. CLARK.