US1783884A - Valve-seat liner - Google Patents

Description

A linerfllllhaying upper and lower Patented. bec-12,' l 'Y OFFICE c rinronn c. LEE, or maERDEmr, sou'r'rr DAKOTA, nssIGNoB. To x. o. LEE & soN co.,

or ABERDEEN, soUrrr Ducarme CORPORATION 'or sovra-DAKOTA VALVE-SEAT LINER invention relates to improvements in valve seat liners.

'An object ofthe invention'is to provide aA `valve seat-liner'which is adapted to be irlsorted into a recessin the intake or exhaust passagesof acylinder head orblock.

.A further object-of .the invention is lto f of the liner in a bored recess at the outer end 'of an intakeor exhaust passage in a cylinder x-block or head and being adapted tobeheld securely at its upper end.

This invention will be best' understood 'from a consideratonofthe following detailed' de scription, inv viewof the accom;4 panying drawings. forming. a part ofthe specification; neverthelessit is to be understood that the invention is not confinedV to the disclosure,v being susceptible A of such change and modifications as shalldene no material departure from the'salient features i In the drawllgrs.-

- Figure "cylinderfblock Shwing the liner i111 place',

liner secured in'position -inodilijed for-ni. lshowing the liner inserted in ai linde block-aand.-

I liner scllredinposition.

Figure 2 -isyasimilar viewl showing the re 3. 1s. a vertical sectional view of 4 a v 4 yis a similar view showing the -Referring to thedrawn I design jured to such an extent that itlisl impossible to'grind 'ih tofproperly seat the vvalvepthe of the invention as expressed in the-appended 1 isa vertical sectionalfview offa the numeral 5 tes .the wall-off'eit er an intake or; .exhaust passageof a cylinder. .block-6.

. When .the valve 'seat becomes- .worn or in-jv Applicationiledv September 18, 1.929. Serial No .`393,504.

surfaces 11 and 12 is seated in 'the recess 7. A

Said .liner is'A of slightly 'greater external diameter than the recess so that the liner -must be forcedy into the 'recess 'and be maintained therein through frictional engagement with the wall8.

-After theilinerhas been seatedin the re l cess 7 the outer .end ofthe wall 8 is forced invwardly tocontact .with theupper bevelled.

surface 11 ofthe liner as shown at 13 in Fig. 2.- This operation provides further' means of vsecurely retaining theli'ner 1Q in place. Referring more particularly to Figs. 3 and 'invention isl provided which gives the same 4 it will be seen that a modified form of the 'results obtained by the liner as shown in Figs. 'Q

-1 and 2 but the liner isheld within its re-k I- spective. recess which has been formedby boringthe upper end of the wall ofthe intake or exhaust passage by means of a'iange' at ythe outer end of thewall of the recess which -is formed byrolling or-swajgingthe metal of y' .the vcylinder block at the outerend of said The liner 18 is mounted within a recess 1 6 which opens into the upper end of anintake or an exhaust passage 1 7', vwhich has its termined depth-so that'when a linerv 18 conf .structed in accordance with the principles of the'invention is forced into the recess the upper or outer end of the ring will be located Y below the plane passing through the top of i theblock 6.'A "By this constructionl an annuendof" the liner 18 and the through the outer face' ofthe lar spacerestricted in width is locatedbe?- tween the plane passing'throughv the -outer lock.'4 The 1iner:18 is formed of cast metal or of glane passing any other metal suitable for the purpose and is cylindrical v in shape.'y The inner face of the li-ner when in 'position is contiguous with the.

Surfac'e of"the passage 17. However', if thisV is not' the ca se. the inner face of the liner '95" "maybe slightly rebored in order vthat it will be 1n the'saine curved surfacewith the. wall.

'ofthepa'ssage 17. The inner outer edge of' thelilier'assh'own at 19, is sheared o at an'4 ticiileylidrical wall Sand' abuse. portion 9.

angle' or is rounded in any approved manner centric with said passage, aliner mounted in in order to facilitate the insertion of the liner within the recess 16. Furthermore, the liner is of slightly larger diameter than the dia eter of the recess so that when the liner is forced into position it will frictionally engage the walls of the recess for aiding in maintaining the liner in position.

The outer extreme edge 20 of the Wall of the block 6 extends above the outer face or end of the liner 18 and this edge is rolled or swaged over as shown at 21 in Fig. 4 in order to provide a securing flange which abuts the outer end of the liner 18 for retaining the the recess, means formed integrally with the block and engaging the outer end of the liner for aiding in retaining the liner against displacement.

CLIFFORD C. LEE.

1. A cylinder block construction having a vertical passage opening through the top of thevblock, said block being provided with a bored recess adjacent the opening in said b1ock,\said recess having a vertical cylindrical wall, a liner fitted within said recess and of greater external diameter than the diameter of said recess whereby said liner will be frictionally held within said recess, said liner being provided at its outer edge with an annular bevelled surface, and means on the outer edge of the Wall' of said recess being adapted to retain said liner in position.

2. A cylinder block construction having a vertical passage opening through the top of the block, said block being provided with a bored recess adjacent the opening in said block, said recess having a vertical cylindrical wall, a liner fitted within said recess and of greater external diameter than the diameter of said recss whereby said liner will be frictionally held within said recess, the outer` peripheryof said liner being disposed substantially within the outer edge of saidrecess, and the outer edge of the wall of said recess being rolled inwardly to engage the outer surface of said liner.

3. A cylinder block construction provided with a passage opening through a face of the block, a bored recess opening into the passage at the outer end thereof and concentric with said passage, a liner mounted in the recess, and a flange projecting inwardly from the block at theV outer end of the wall of said recess and extending over the liner for aiding in retaining the liner in position.

4. A cylinder block construction provided" with a passage opening through a face of the block, a counterbored recess opening into the passage at the outer end thereof ,and con-

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