US1728149A - Valve silencer - Google Patents

Description

C. BERNE VALVE SILENCER Sept. 10, 1929.

Filed Oct. 13, 1927 Illil INVEN TOR. Celealzn Barne ATTORNEY Patented Sept. 10, 1929.

UNITED STATES PATENT OFFICE.

CELESTIN BERNIE, F BBIDGEPORT, CONNECTICUT, ASSIGNOR. TO RALPH VITELLO AND CELESTIN BERN E, OF BRIDGEPORT, CONNECTICUT, A GOPARTNEBSHIP.

VALVE SILENGER.

Application filed October 13, 1927. Serial No. 226,000.

This invention relates to a silencer for tappet valves, and has more especial referonce to a silencer for tappet valves of the type used in connection with valve-in-thehead motors.

An object of the invention is to provide a valve silencer adapted to be associated with the usual valve operating mechanism of an internal combustion engine to take up loose play or wear of said mechanism.

A further object is to provide a valve silencer for tappet valves which will be of simple, inexpensive and practical construction, will be capable of application to the valve operating mechanism of a motor in very easy manner, and will be an improvement generally over all more or less similar devices heretofore known.

With the above objects in view, as well as j others which will appear as the specification through the upper part of an internal combustion engine, disclosing the novel valve silencer in side elevation;

Fig. 2 is a perspective view of the silencer,

disclosing certain of the parts of an internal combustion engine with which the silencer is associated Fig. 3 is a perspective View of the silencer removed from the engine and Fig. 4 is a plan view of the locating plate of the silencer, detailing the manner of associating the spring of the silencer with said plate.

With respect to the drawing and the numerals of reference thereon, 10 represents an internal combustion motor having a standard. 11 pivotally supporting a rocker arm 12. A valve stem 13 projecting upwardly through the head of the motor has an ordinary valve (not shown), and is adapted to be engaged by an end 14 of the rocker arm A spring 15 interposed between the upper edge of the valve cage 16 and a collar 17 upon the stem normally keeps the valve seated. A push rod 18, actuated by a cam on the cam shaft (not shown), is adapted to en,. gage the opposite end 19 of the rocker arm to raise said engaged end and thus depress the valve stem 13 to open the valve in the ordinary course of the operation of the engine. An adjusting screw 20 in said end 19 of the o5 rocker arm engages a "cone-nut 21 on the push rod 18. A cover 22 for the parts of the motor before described is of rectilinear shape, including vertical side and end walls fitting upon'the motor block as at 23 and aii 7o horizontal wall 241 above the rocker arm. A bolt 25 extending upwardly from and attached to the motor block, as at 26, passes through the wall 24 of the cover, and a wing nut 27 upon the threaded upper portion or} the bolt is adapted to be turned down against the horizontal wall 2 1 of the cover plate to fix its relation to the motor block.

Numeral 28 represents, generally, the valve silencer of the invention. As disclosed, said so valve silencer consists of a suitably bent resilient wire 29 and a locating plate 30.

Of the wire 29, numeral 31 represents an ordinary coil, the wire of the coil merging at one of its ends in an upwardly eXten :l-' ing length 32 desirably terminating in a loop 38 secured in any convenient manner to the lower face of the plate 30 as by lugs 34 struck from the plate and bent over spaced apart locations of the loop, and the wire of said coil merging at its opposite end in a preferably approximately horizontal length 35, the lengths 32 and 35 normally being, as disclosed, at about a 60, angle to each other and in approximately parallel vertical planes. See Figs. 2 and 3, and the dotted line position of the upper portion of the valve silencer in Fig. 1. The approximately horizontal length 35 terminates in a desirably shorter upwardly extending vertical length 36, itself terminating in a desirably approximately horizontal slightly curved length 37 extending preferably about at right-angles to the horizontal length 35. The horizontal slightly curved length 37 terminates in a desirably somewhat longer downwardly extending vertical length 38, itself terminating in a preferably horizontal length 39 extendingin direction away from the coil 31 and desirably approximately parallel with the length 35. The length 39 terminates in a slightly curved length 40 extending preferably approximately horizontally and being in vertical alignment with the length 37, and the length 40 terminates in a length 41 extending preferably approximately horizontally in direction back toward the vertical length 38 and parallel with and in spaced relation to the length 39.

As will be apparent from the drawing, the lengths 36 and 37 and the upper portion of the length 38 constitute a hook 42 about in horizontal alignment with the coil 31, and the lengths 39, 40 and 41 constitute a second book 43 beneath the hook 42 in alignment with said hook 42 in a vertical plane extending longitudinally of the rocker arm 12, but spaced at further distance from a vertical plane extending transversely of said rocker arm at the coil 31 than is said hook 42.

The manner of applying the valve silencer to the motor and its valve operating mechanism will be very clear from Figs. 1 and 2. WVhile the cover 22 is removed from the motor block, the silencer is placed upon the rocker arm 12 in such manner that the hook 42 fits upon the portion of said rocker arm between its axis and the end 19, the coil 31 being positioned at one side of said rocker arm as disclosed, the length 37 being made to rest upon the upper edge-of said arm, and the lengths 36 and 38 being positioned at opposite sides of said rocker arm. And the hook 43 is placed upon the push rod 18 so that the lengths 39, 40 and 41 extend about a considerable part of the perimeter of' said push rod in close proximity thereto or contiguous therewith. At this time the length 32 will preferably have about the position as designated in dotted lines in Fig. 1, to situate the plate 30' above the normal location of the cover 22. WVhen then the cover 22 is placed upon the motor block and fastened down in the manner as described, the plate 30, together with the length 32, will be pushed downwardly, and said plate 30 will fit against the under face of the wall 24 of the cover plate in the manner as indicated in full lines in said Fig. 1. Clearly, the valve silencer will thus be stably situated in the motor, by reason of the fitting of the hook 43 over the push rod 18, the fitting of the hook 42 over the rocker arm 12, and the fitting of the plate 30 against the under face of the horizontal wall 24 of the cover 22. The coil 31 and the lengths 32 and 35 extending from said coil will, obviously, be

under spring tension resiliently pushing the end 19 of the rocker arm 12 down against the push rod 18.

It will be seen that the hooks 42 and 43 can be fitted upon the rocker arm 12 and the push rod 18, respectively, without difficulty, all that is necessary being to lower the valve silencer from position above and in vertical alignment with the rocker arm and push rod to cause the hook 43 to move down past the end 19 of the rocker arm in spaced rela-.

tion to said end 19; to then move said silencer toward the axis of the rocker arm to position said hook 43 about the push rod 18 and the hook 42 above its intended position upon the rocker arm; and to then move the silencer further downwardly to cause the hook 43 to reach a lowered position along the length of the push rod and the hook 42 to rest upon the rocker arm.

Having thus fully described the inven-. tion, what I claim as new and desire to secure by Letters Patent is:

1. A silencer for valve operating mechanism including a rocker arm and a push rod, comprisin a member adapted to be,

located, a hook member connected with said located member and adapted to resiliently fit oversaid rocker arm to urge said arm toward the push rod, and a second hook member connected with said hook member. first mentioned adapted to fit said push rod.

2. A silencer for valve operating mechanism including a rocker arm and a push rod, comprising a resilient wire including a member adapted to be located, a hook member adapted to fit upon the rocker arm to resiliently urge said arm toward the push,

rod, a coil connecting said member to be located and said hook member, and a second hook member adapted to fit upon said 1 push rod. 7 I

3. A silencer for valve operating mechanism including a rocker, arm and a push rod, there being a housing for said rocker arm and push rod comprising a member:

adapted to be located against said housing, a hook member connected with said located member and adapted to fit upon the rocker arm to resiliently urge said arm against the push rod, and a second hook member 'con-= nected with the hook member first mentioned adapted to fit upon said push rod.

4. A silencer for valve operating mechanism including a rocker arm and a push rod, there being a housing for said rocker arm and push rod, comprising a resilient Wire and a plate, said plate being adapted to bear against said housing and said Wire including a hook member adapted to resiliently engage the rocker arm to urge said arm against the push rod, and a second member fitted about said push rod.

Signed at Bridgeport, in the county of Fairfield, and State of Connecticut, this 11th 15 day of October, A. D., 1927.

CELESTIN BERNE.

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