US1440611A

US1440611A - Valve-spring compressor

Info

Publication number: US1440611A
Application number: US497266A
Authority: US
Inventors: Norman A Landis
Original assignee: Individual
Current assignee: Individual
Priority date: 1921-08-31
Filing date: 1921-08-31
Publication date: 1923-01-02
Anticipated expiration: 1940-01-02

Description

N A LANDIS VALVE SPRING COMPRESSOR.

FILED Aus. 31.

Jan. 2,1923.

citizen of the. United States, residing at,

Yorln'in the county of- York and State of Patented Jan, 2, 1923.

titre res see

NORMAN A. LANDiS, on YORK; rnivnsirrvnnia venvnsrnrne coivrrnnssonl Application filed Au ust 31, 1921 S eria 1N0 iI49 Z2G6.

T 0 all to hom it may concern Be it known that I, NORMAN A. LANDIs, a

Pennsylvania; have invented certain new and useful Improvements in Valve-Spring Compressors; and I do herebydeclare the following to bea full, clear, and exact desoription of the same, reference being had-to the accompanying drawings, forming part ofthis specification.

This invention relates to' valve spring compressing tools of the type particularly adapted for facilitating; the removal of en's 'gine valves. I

An object of the invention is to provide a tool that can be quickly adjusted and applied for compressing the valve spring and hold-r [ing the spring under compression without A further object is to produce a tool that not only possesses strength and durability, but is also practical and may be manufactured at a comparatively lowcost due to its simplicity. y 1 3 In the accompanying 'drawings Figure 1 is a fragmentary sectional view through a valve casing and a side elevational view of the tool, the several parts of the tool being shown in full lines in the positions they occupy before the valve spring is compressed ancl in dotted lines in the positions they occupy after said spring has been compressed.

Fig. 2 is an end elevation of the tool; and

v Fig. 3 is a detail fragmentary view of the end of the valve spring engaging member.

The tool comprises a frame having means secured therein for-engaging and preventing upward movement of the valve proper while a valve spring engaging member, also carried by the frame, is elevated by suitablev operating mechanism for compressing said spring. v I In the preferred form of tool the frame 10 is somewhat elongated to space the valve and valve spring engagingmembers apart as the valve engaging member projects down through the valve'casing and the spring engaging in'ember extends downwardly on the exterior of said casing. Astem 11 for-enorih i m 1n operation, the stem ll, aswill be. undergaging the top of 'the. valve isslida'bly secured in a guideway extending vertically through one end of said frame and tlievalve spr ng compressor arml3 lsachustably secured me similar opening 1n the opposite end of the frame. Arm 13isretainedinany lower-portion of said. arm is off-set as at 15' to prO e'ot inwardly beneath thevalve casing.

desired position by set -screw 1% and the g Theextremityf the oft-set portion beneath the casing s bifurcated as at 16 and is posi law-the valvespring '18."

engaging stem 11 is held spaced vertically 'tio11e'd'- 'in alinementiwiththe ste'nr ll'to I straddle thevaljve' stem 17 immediately ,be-

I 1 I To e'nable j the' tool to be re'adil y-- applied "to the valve-12 and'valvespring 18,,the-valv'e from thebi-rfurcated end-16 of arm 13-by a. i

coil spring l9 surrounding said stem .11 and engaging the upper surface of frame 10 and an enlargement 20 formedat upper end stood, is centered on the top face of valve 12 and the bifurcated extremity of arm: 13 is placed beneath valve spring 18,

Arm 18, to-

gether with the frame 10 is then moved rela nism to bring the arm andstem closer to one another and compress-the'valve spring.

' AQsim'ple, but 'durable and eflicien't operating mecl'iaiiism for. this purpose consists of an operating handle 21,, preferably in the form of a bell crank lever, pivoted intermeti'vely'to the' -stein 1 1 b y operating mechadiate its ends and connected to the .stem l l by a link 522. To secure a good leverage, the short arm of the handle or lever 21 is pive otally connected to one end of the connecting link 22 andthe opposite end of saidlinlr pivotally joined. to the enlarged portiol i 2O of the stem 11. When the stem 11 is spaced I from thebifurcat'ed'end 16 of arm 13 fory applying the tool to the valve spring, the pivotal connection between; handle 21 and link 22 is located between the/stem ll and arm. 13 butias'the handle istu'rned onfits pivot towards arm 13 and downwardly, and

the frame 10 and arm 18. are elevated on' stem 11 to compress-the valve spring, said pivotal connection passes "across thecenter ofthe connectlon between the link and stem, there; 7

by preventing the return ofthe handle.

1 A stop for-limiting the throw of handle 21 is also provided in the-form of a pro-f jection 23; on frame 10-, the enlargement formed by;theprojectmn being, preferably a utilized also for joi rnaling. the handle 21 on the frame. Said PI'OJQClJlOIl e t-endsinto the path of link 22, the latter engaging said projection and v preventing a continuation of the rotatlon of handle 21 on 1tS'plV0l immediately after the joint between isaid handle and'link passes across the c'enteri'of the connection between the link andstem 11.

The several parts are thus-locked in position with. the valve, spr ngcompressed, lea

in'g both of ,;the,--operator.s hands freesto .-peri' or1n any workdesiredr v I *VVhat is claimed is: v

1 "'1 In a valvespring compressor, the. combination o'l a frame, a stemslidably mounted in the frame, an arm secured in. the frame and; adapted to engage the valve spring, and means for moving the a frame on the stem comprising a handle pivoted lone the frame, and .a link pivotally connect-edfto both the handle and the slidahle stem, the

- pivotal connectio n between. the handle and link being movable across the center; of the connection between said link and stem,'and

tion ofthe handle. l p I 2.111 a valve spring compresson'the comfl means on vthe frame. for lnniting the rotabination of a frame, a stemslidably mounts ,ed in; the frameya valve spring engaging arm adjustably secured in the frame iand means for, moving the stem lnjthe frame comprisinga I handle pivoted, intermediate its-ends on-the frame and a link pivotally connected to o ne end. of the handle and tovtheuslidable stem, the. pivotal connection between the link and handle being movable across the center of the pivotal connection between the link and stem.- ;,j

3.1n avalve' spring compressor, the com- .bination of. a frame;v a stem slidably-mounted in the frame, an Lrshaped arm adjnstably secured" in the frame and adapted to engage a valve spring, and means for moving the stem 1n the frame comprising ahandle pivoted "intermediate'its ends on the frame and a link, pivotally connected at its i ends to the handleand tothe stem, the pivotal connectionnbetween the handle and link being movable transversely or the center of the pivotal connectio and.stem.

4. In a; valve spring c0mpress0r,; the combination of a frame, a stemslidaloly mounted in the frame an L-shaped: arm carried by the lfra'me and adapted; toengage the valve spring,- means for moving the stem in the frame comprising ahandle pivoted on] the frame and a; link pivotally connected. at

'11. between said: link its ends to the handle and to thejstem, the

pivotal connection betweenthe handle. and ink bein'g' movable transversely, of the center of the connection between "said link and ste1n,-an :l -a stop on the frame. cooperatthe stem' s rin r surron'ndin said jstem 7 2D g a l and engaging the enlargement and the I frame, a valve spr ng engaging arm car- .rled by the frame, and means for inovlng the stem in, the frame against the-tension of I said spring comprising a handle pivoted on the. frame and a link pivotally. connected to the handle and to the stem, the pivotal connectionbetween the handle and linkbeing s Pi t l co nection between said link and stem.

NORMANA, Lannisf movable across the center of the