US1687723A - Valve-spring compression - Google Patents

Description

Oct l6, 1928.

I. R. GOODSELL VALVE SPRING COMPRESSION Filed Jan. 25, 1.92"!

Patented Oct. 16, 1928} IRA n. GooDsEnL, OETULSA, OKLAHOMA;

VALVE-SPRING COMPRESSION- Application filed January 25, 1927." Serial No. mazes.

The present invention relates to improve ments in valve spring lifting devices and has for its primary object to provide a device embodying an adjustable frame and having means for conveniently and safely compressing valve springs to permit disconneo tion of the'valvc.

A further object of the invention is the provision of a valve spring lifting device designed'so as to be conveniently applied upon a motor and engageable with the spring to facilitate the compression of the valve spring. Another object of the invention is the pro vision of a spring compressing device'of the above character which is comparatively simple and durable of construction. Still another object of the invention is the provision of a .valve spring device of the above type which can be readily disassembled and which can be manufactured at arelative- 1y low cost. Other objects andadvantages-of the inven tion will b-ecomeapparent as the description progresses. I a 1 1 In the accompanying drawingaforming a part of this specification and in which like reference characters are employedto designate' corresponding parts throughout the same; a r

Figure 1 is a side elevational view of a valve spring lifting device constructed in ac cordance with my invention, 7 i 1 Figure 2 is a front end elevational view of the same, i I Figure 3 is a horizontal transverse sectional view taken on the line 3-3 of Figure. 1, and

. Figure 4 is a fragmentary perspective view of a portion of the frame structure.

Referring to the drawing, wherein for the purpose of illustration is shown the preferred embodiment of my invention, the numeral generally designates a' supporting frame of generally Ushaped formation. This frame is preferably extensible embodying a. pair of adjustable sections.

The lower frame section 11 embodies a vertical body 12 formed of aflat metallic bar perforated at its intermediate portion as indicated at 13 to provide a series of longitudinally arranged openings. Theupper end of the bar 12 is formed with a rectangular I elongated sleeve l i engageable with the complementary bar of the upper frame section. Formed at the lower end of the body bar 12 and extending at a right angular position therefrom isa horizontal arm 15 forming a continuation of the bar 12 and formed at its outer end with a bifurcated bracket 16; The

. bracket 16 is of angular cross section providing a horizontal valve pin engaging plate 17 and a vertical continuous flange 18.

The upper (omplementary frame section designated by the numeral 19 embodies a vertically extending longitudinal body bar 20 slidably projected through the sleeve 14 of the lower framesection. The lower end of the upper section body barcarriesa detachably connectedsleeve 21 adapted to slidably embrace the body 12 of the lower section and formed with transversely aligned openings adapted to align with the opening 13 in the I lower section body for adjust-able connection of the sections; A pin 22 is adapted for slidable engagement with the openings formed in the lower section and the sleeve 21 of the upper section for securing the sections in set position. Formed integral with the bar 20 of the upper section 19 and extending in a rightangular position therefrom is a horizontally directed arm 23, the outer end being formed with an enlarged transversely directed guide 24 formed with a transversely directed vertical bore of rectangular formation.

Mounted for vertical reciprocating move ment in the bore of the guide 24 and adapted to adjustably support the frame in association with the block of an internal combustion engine is a vertical lifting bar 25, the lower end being tapered to form a. point 26 for secure engagement withthe bloc-k while the upper end is provided with aseries of longitudinally aligned openings 27.

Rotatably mounted in vertical position beside the guide member 24 and pivotally connected with the rear portion of the guide member is a circular crank disk 28 supported by a crankpin 29. extended through an open ing 30 formed in the rear'portion of the guide.

rigidly fastenedtothe disk 28 by meansof machine screws 31 and extending radially therefrom is a crank arm 32 carrying a rotatable actuating handle 33 at its outer extremity.

Connecting the reciprocably movable lifting rod 25 and the rotatable disk 28 for simultaneous movement is a rod 34 having its upper end bent at a right angular position for projection through the openings 27 in the lifting rod and its intermediate portion offset for extension parallel with the outer face of the diskQS: The lower extremity of the rod 34: is-pivotally connected with the disk by means of a pivot pin 35 mounted i-n-an ec- In use, the device is mounted in a suitable position on the engine block, the lower ta- ,p ered end of the lifting bar 25 being posi- I tioned on a stationary abutment of the block while the bifurcated(bracket 16 formed'on the lower end of vthe frame is positioned below the lower extremity of the valve spring. The valve sections 11 and 19 are adjusted so that the yoke will be disposed imn'iediately below the spring in an expanded position. The frame 10 is then elevated by rotatably operating the crank arm 32 through the medium of the handle The maximum stroke movement of the bracketis attainedby =a semicircular movement of the arm, producing a substantial elevation of the frame 10 and contract-ion ofthe valve spring so as to permit convenient removal of the valve spring. A further, more accurate adjustment may be obtained by longitudinal movement of the upper end of the connecting rod 34 which may be placed in engagement with any of the openings 27 in the lifting bar.

From the foregoing description, and the vdrawing, it will be readily noted-that the present structure presents simple and durable device for elevating and compressing the valve springs of an internal combustion engine to permit-removal of the valve spring pins whereby the valves ma be readily removed from the block. TheeX- tensible frame structure, allows substantial adjustment for application upon various types of motors andalso permits contraction of the frame for storage in a relatively small space. The compression of thespring is very easily effected by the rotary operationof the crank arm, reducing the efforts incidentto this operation by the substantial leverage obtained by the arm. v 7

It is to be understood that the form ofmy invention herewith shown: and described isto be taken as the preferred example of the same'andthat various changes asto the shape, sizeand arrangement, of parts may .be resorted to without departing from th-espirit of the invention or the scope of the subjoined claims. I r 2 an extremely Having thus described my inven-tion, I claim:

l. Avalve spring lifting device comprising a U-shaped frame including a pair of longitudinally adjustable sections, a bifurcated bracket formed on the lower end of the frame engageable with the lower end of a valve spring, a guide member formed on the upper end of the frame formed with a vertical bore,

a vertically movablelifting bar mounted in the bore of the guide member, a crank pin rotatably supported in a vertical position on the upper end of the frame, a disk body pivotally mounted on the frame, a crank arn'r valve spring, aguidesmember formed with a vertical bore formed'flon the upper end of'the upper framesection', a lifting bar mounted I for vertical reciprocating movement in the guide member, a crank disk roupper end of the frame, a radially extending crank arm rigldly secured to thecrank disk,

tatably mounted in vertical.po'sitionqon the andfa connecting rod having its upper end adj ustably connected with the connecting bar and its r lower end; pivotally connected in an eccentric position with the crank disk: sothat rotary movement of the crank disk Will vertically reciprocate the frame with respect to v the lifting bar.

3. A spring-lifting device of the character described, comprising a frame, means carried by the frame for engaging beneath a spring, a vertically shiftablec element directed :toward the spring lifting means, a reciprocatory rod arrangedsubstantially parallel to the vertically shiftable element andhaving one end removably engaged therewith, and

rotary means carried by theframe and con- 'nected with the other end ofisaid' reciprocatory rod for actuating thesame and theshiftable elementcontrolled. thereby. In testimony whereofI aflix my signature.

IRA R. eooDsEL

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