US1958935A - Protective means for the spring plates or washers of valves - Google Patents
Protective means for the spring plates or washers of valves Download PDFInfo
- Publication number
- US1958935A US1958935A US594905A US59490532A US1958935A US 1958935 A US1958935 A US 1958935A US 594905 A US594905 A US 594905A US 59490532 A US59490532 A US 59490532A US 1958935 A US1958935 A US 1958935A
- Authority
- US
- United States
- Prior art keywords
- collar
- valve stem
- valve
- valves
- washers
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 230000001681 protective effect Effects 0.000 title 1
- 238000010276 construction Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
- F01L3/10—Connecting springs to valve members
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S411/00—Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener
- Y10S411/918—Threadless nut
Definitions
- This invention relates tosecuring means for the spring plates or washers of valves and is intended more particularly for the admission and exhaust valves of internal combustion engines.
- the invention relates more particularly to such securing means comprising a collar of horseshoeshape having a lateral slot to enable it to be slipped laterally on to a conical portion of the valve stem and having a conical central aperture corresponding to the conical portion of the valve stem, the spring plate pressing against the said collar, which is accommodated in a circular recess in the spring plate, under the influence of the valve spring.
- the conical partof the valve stem is longer than the thickness of the horseshoe-shape collar and the slotin the collar is narrower than the diameter of the central aperture and only slightly greater than the minimum diameter ofthe conical part of the valve stem.
- Figure 1 shows a valve in elevation, as assembled, with the spring plate or washer
- Figure 2 is a plan view of the slidable collar.
- the valve stem (1 in Figure 1 comprises a conical portion b, upon which a horseshoe-shaped collar c (Figs. 1 and 2), provided with a conical central aperture e and a lateral slot 2 extending from the central aperture to the outside, is mounted from the side.
- the collar 0 is held in its position by the spring plate or washer d, which is subject to the pressure of the valve spring 1,
- the spring plate d has a cylindrical recess (1 corresponding to the external cylindrical surface of the collar and an outwardly extending flange 01,
- valve spring I bears.
- the slot e is narrower than the diameter of the central aperture e and only slightly wider than the thinnest part of the conical portion b of the 4 valve stem.
- the length of the conical portion b of the valve-stem a is greater than the thickness of the collar 0.
- This collar therefore, can embrace more than half the periphery of the stem, since it is slipped laterally round the lower portion of the cone, and then pushed upwards towards the upper portion of the cone portion b.
- This construction has the advantage on the one hand that a better contact between the collar and'the valve stem is obtained, and on the other hand that the collar is automatically prevented from dropping out sideways until it is lowered to engage the thinner part of the conical portion b of the valve stem.
- the spring plate or washer d is here slipped over the collar 0 after the spring plate has been lowered to enable the collar to be pushed on to the thinner part of the conical portion 1) of the valve stem, the collar fitting into the recess (P, and being thereby prevented from lateral displacement, while the spring 1 forces the spring plate and collar towards the thicker part of the conical portion b, whereby the collar is wedged against the said thicker part.
- the spring plate d is depressed, the spring I being compressed, the collar c is then lowered until it reaches the thinnest part of the conical portion 1) and is then re-x moved laterally, whereupon the spring and spring plate can be withdrawn upwardly and the valve is then removed downwardly.
- a valve and valve stem the end part of the valve stem opposite the valve being of greater diameter than a portion of the valve stem between it and the valve and the stem having a diverging conical portion extending from the said portion of the valve stem towards the said end of the valve stem, in combination with a collar having a central conical aperture and a slot extending from said central apertureto the periphery of the collar, said slot being narrower than the diameter of the central aperture and wider than the thinnest part of the conical portion of the valve stem, said diverging conical portion of the valve stem having a length exceeding the thickness of the collar by an amount to allow the collar to be passed over the thinnest part of the conical portion and a spring plate having a recess therein to receive said collar and an aperture for the valve stem.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Check Valves (AREA)
- Safety Valves (AREA)
- Lift Valve (AREA)
Description
May 15, 1934. g mi-15L: 5 AL 1,958,935 PROTECTIVE mums FOR THE SPRING PLATE; 0R WASHERS OF VALVES Fi led Feb- 24; 1932 III Patented May 15, 1934 PROTECTIVE MEANS FOR THE SPRING PLATES R WASHERS 0F VALVES Gottlob Aichele and Albert Heess, Stuttgart, Germany, assignors to Daimler-Benz Aktienges ellschaft, Stuttgart-Unterturkheim, Germany, a
company of Germany Application February 24, 1932, Serial No. 594,905 In Germany March '1, 1931 A 1 Glaim. (Cl. 251-144) V This invention relates tosecuring means for the spring plates or washers of valves and is intended more particularly for the admission and exhaust valves of internal combustion engines.
5 The invention relates more particularly to such securing means comprising a collar of horseshoeshape having a lateral slot to enable it to be slipped laterally on to a conical portion of the valve stem and having a conical central aperture corresponding to the conical portion of the valve stem, the spring plate pressing against the said collar, which is accommodated in a circular recess in the spring plate, under the influence of the valve spring. According to the present invention the conical partof the valve stem is longer than the thickness of the horseshoe-shape collar and the slotin the collar is narrower than the diameter of the central aperture and only slightly greater than the minimum diameter ofthe conical part of the valve stem.
Two examples of the construction of the invention are illustrated in the accompanying draw ing, in which Figure 1 shows a valve in elevation, as assembled, with the spring plate or washer, and
Figure 2'is a plan view of the slidable collar.
The valve stem (1 in Figure 1 comprises a conical portion b, upon which a horseshoe-shaped collar c (Figs. 1 and 2), provided with a conical central aperture e and a lateral slot 2 extending from the central aperture to the outside, is mounted from the side. The collar 0 is held in its position by the spring plate or washer d, which is subject to the pressure of the valve spring 1,
and which is mounted upon the valve stem from above before the collar is put in position. The spring plate d has a cylindrical recess (1 corresponding to the external cylindrical surface of the collar and an outwardly extending flange 01,
against the underside d of which the valve spring I bears.
The slot e is narrower than the diameter of the central aperture e and only slightly wider than the thinnest part of the conical portion b of the 4 valve stem. The length of the conical portion b of the valve-stem a is greater than the thickness of the collar 0. This collar, therefore, can embrace more than half the periphery of the stem, since it is slipped laterally round the lower portion of the cone, and then pushed upwards towards the upper portion of the cone portion b. This construction has the advantage on the one hand that a better contact between the collar and'the valve stem is obtained, and on the other hand that the collar is automatically prevented from dropping out sideways until it is lowered to engage the thinner part of the conical portion b of the valve stem. The spring plate or washer d is here slipped over the collar 0 after the spring plate has been lowered to enable the collar to be pushed on to the thinner part of the conical portion 1) of the valve stem, the collar fitting into the recess (P, and being thereby prevented from lateral displacement, while the spring 1 forces the spring plate and collar towards the thicker part of the conical portion b, whereby the collar is wedged against the said thicker part.
If the valve is to be removed, the spring plate d is depressed, the spring I being compressed, the collar c is then lowered until it reaches the thinnest part of the conical portion 1) and is then re-x moved laterally, whereupon the spring and spring plate can be withdrawn upwardly and the valve is then removed downwardly.
What we claim is: i
A valve and valve stem, the end part of the valve stem opposite the valve being of greater diameter than a portion of the valve stem between it and the valve and the stem having a diverging conical portion extending from the said portion of the valve stem towards the said end of the valve stem, in combination with a collar having a central conical aperture and a slot extending from said central apertureto the periphery of the collar, said slot being narrower than the diameter of the central aperture and wider than the thinnest part of the conical portion of the valve stem, said diverging conical portion of the valve stem having a length exceeding the thickness of the collar by an amount to allow the collar to be passed over the thinnest part of the conical portion and a spring plate having a recess therein to receive said collar and an aperture for the valve stem.
oomon AICHELE. ALBERT nnnss.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1958935X | 1931-03-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1958935A true US1958935A (en) | 1934-05-15 |
Family
ID=7781985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US594905A Expired - Lifetime US1958935A (en) | 1931-03-07 | 1932-02-24 | Protective means for the spring plates or washers of valves |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US1958935A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2513965A (en) * | 1946-08-20 | 1950-07-04 | Gen Electric | Coil retaining means |
| US2558421A (en) * | 1948-03-05 | 1951-06-26 | W B Connor Engineering Corp | Diffuser with a detachable deflector member |
-
1932
- 1932-02-24 US US594905A patent/US1958935A/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2513965A (en) * | 1946-08-20 | 1950-07-04 | Gen Electric | Coil retaining means |
| US2558421A (en) * | 1948-03-05 | 1951-06-26 | W B Connor Engineering Corp | Diffuser with a detachable deflector member |
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