US1453471A - Spring retainer - Google Patents

Description

May 1, 1923.

. 1;453, 47l G. M. LE TARTE SPRING RETAINER Filed Dec. 28, 1921 INVENTOR.

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A TTORNEY.

l atented May 1, 1923.

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SPRING RETAINER.

Application filed December 28, 1921. Serial No. 525,492.

To all whom it may concern Be it known thatL-Gnonon Mun-min Ln Turn, a citizen of the United States, residing at Detroit, county of l Vayne, State of Michigan, have invented a certain new and useful Improvement in Spring Retainers, and declare the following to be a full, clear, and exact description of the same, such as will enable others skilled in the art to which it pertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification.

This invention relates to a spring retainer for the valve stems of internal combustion engines, and has for its object the quick yet secure anchorage of the outer end of the spring in its position about the valve stem, with the desired degree of compression against its resiliency. My device not only acts to hold the spring more firmly and accurately, but as well is unusually inexpensive to make, and can be put in place with a minimum expenditure of time and effort.

In the drawings:

Figure 1 is an elevational view of spring held in place about a valve stem by one of my improved devices.

Figure 2 is a detail, partly in section, of the parts shown in the upper part of Fig ure 1,

Figure 3 is a perspective View, on an enlarged scale, of my improved device,

Figur 4 is a plan view from above,

Figure 5 is a fragmentary elevational view taken along the line 5-5 of Figure 1, that is, at right angles to the position from which Figures 1 and 2 are taken.

Figures 6 and 7 show one of my holding devices in successive positions of being forced into place over the headed top of the stem.

A represents the valve stem, about the lower end of which the spring C is adapted to rest on the broadened base 13. The upper end of the valve stem is provided with a head D, just beneath which is preferably located the grooved part E. Against the outer end of the spring is pressed the centrally perforated disk F, provided with depending flanges G, which prevent the end of the spring from lateral slippage; the cen tral aperture H is of such size that it can slip over the headed end D of the valve stem.

From diametrically opposite sides of the disk F rise inwardly extending tongue pieces J, the end of, each one being semi-circularly notched, as at K. These tongues are pressed down with the disk F over the head i) of the valve stem until their notched ends when their resiliency, which has been put under strain as they scrape past the head D,

causes them to fly upwardly against the under surface of the head D when the relatively smaller grooved portion E is reached. The disk F is thus locked against escape over the end of the valve stem, and the spring C is held between it and the base B in the desired degree of compression, the position of the tongue pieces J being sufiir-iently oblique to the under face of the head D to respond, as regards resiliency, to the lengthwise pressure of the spring C against the disk F. i i

To remove the spring C it is merely necessary to press downwardly upon'the disk and thus upon the spring C, sufficiently for the ends of the tongues J to clear the under side of the head D, when bent outwardly. The disks can be cheaply produced in quantities by stamping, and by using them not only can one avoid the use of a much more uncertain anchoring pin extending through the stem across the top of the spring, but as well the time and equipment expense required for boring a hole through the head of the stem is avoided, as well as the appreciably greater effort involved in assembling a spring thereon.

hat I claim is: i

1. In combination with a headed stem and a spring engaging thereabout, a centrally apertured disk adapted to freely engage over said stem and against the top of said spring, said disk being provided with upwardly and inwardly extending tongue pieces Whose ends are adapted to engage under the head of said stem.

2. A spring holding device, consisting of a centrally apertured disk provided with a pair of upwardly and inwardly extending tongues adapted to engage about and under the headed end of a stem.

3. In combination with a centrally perforated disk, depending flanges spac'edly located about the periphery thereof, and upwardly and inwardly extending tgngues adapted to-engage with their free ends under the head of a stem relatively'to which the anchorage of a compressed spring is desired.

4. As a new article of manufarture, a centrally apertured disk for engagement about a headed stem and against the top of a helical. spring, said disk being provided with upwardly and inwardly extending tongue pieces adapted to engage under the head oi the stem and with depending peripheral projections adapted to hold the end of the spring against slippage.

5. A spring-lockingdisk for the headed end of a stem, comprising a centrally perfocation in the presence of two witnesses.

GEORGE MICHIEL LE TARTE.

Witnesses:

VILLIAM M. SWAN, LUCILE D. BRUESER.

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