US1494095A

US1494095A - Valve-spring lifter

Info

Publication number: US1494095A
Application number: US510352A
Authority: US
Inventors: John J Bartenstein
Original assignee: Individual
Current assignee: Individual
Priority date: 1921-10-25
Filing date: 1921-10-25
Publication date: 1924-05-13
Anticipated expiration: 1941-05-13

Description

Patented May 13, 1924.

UNITED STATES JOHN J. BARTENSTEIN. or

CLEVELAND aaren'rs, OHIO.

vALVE-SPRING L'rrrnn.

Application filed October 25, 1921. Serial No. 510,352.

To all whom it may concern:

Be it known that I, JOHN J. BAR'rENsrnIN, a citizen of the United States, residing at Cleveland Heights, in the county of Guyahoga and State of Ohio, have invented certain new and useful Improvements in Valve- Spring Lifters, of which the following is a specification.

This invention relates to valve spring lifters for use in compressing the coiled spring around the valve stem of an internalcombustion engine to release the tension of the spring upon its supporting pin and thereby permitting the withdrawing of said pin in order that the valve may be removed.

Another object of the invention is to provide a simple and efficient valve spring lifter, which will become and remain looked when the valve spring has been compressed, and is readily unlocked when it is desired to release the spring.

With the above and other objects in view, the invention will be hereinafter fully described as illustrated in the accompanying drawings, and the novel features thereof will be distinctly pointed out in the appended claims.

In the drawings similar characters of references are used to designate corresponding parts.

Figure 1 is a side view of a valve spring lifter constructed in accordance with my invention, the same being applied to a valve spring in position for compressing the same, Fig. 2 is a similar view after thevalve spring has been compressed, and

Fig. 3 is a plan view of the valve spring lifter as shown in Fig. 2.

Referring to the drawings 1 represents the valve of an internal-combustion engine, 2 the stem thereof, and 3 the coiled spring around the valve stem. The pin 4 supports a washer 5, which carries the coiled spring for exerting necessarytension on the valve. When it is desired to remove the valve for regrinding or replacing the same, it is necessary to relieve the tension of the coiled spring to permit the withdrawal of the pin 4, and the valve spring lifter hereinafter'described is designed for accomplishing this purpose.

The valve spring lifter consists of a stationary arm 6 having a flattened and bifurcated end 7 for straddling the valve stem 2, and its other end is formed into a handle 8. Fixed to the side of the arm 6 for serving pressing the valve spring 3, a pair of

toggle links

16 and 17 are pivoted to said stationary arm and said movable arm at 18 and 19 respectively, and their inner ends are pivoted at 20 to a bar 21, whichis slidably mounted between the pairs of plates 9-10. The free end of the bar 21 is pivoted at 22 between a pair of plates 23-24 forming a lug extending from a handle25, which is pivoted at 26 between rearwardly extending upper ends 1l-12 of the pair of plates 9-10. By pressing together the

handles

8 and 25, the bar 21 is forced forwardly and the pairs of

links

16 and 17 exerting action upon the movable and

stationary arms

13 and 6 force their

ends

15 and 7 outwardly from each other. To prevent the

toggle links

16 and 17 moving beyond their vertical alining positions, the bar 21 is made of such length, that the ends of the pair of plates 23-21 will engage the rear edges of the pair of plates 9-10 before said toggle links reach their vertical alining positions. When the pairs of

links

16 and 17 reach their vertical alining positions, the movable arm 13 and the stationary arm 6 are held in their open positions.

In order to lock the movable arm 13 and the stationary arm 6 in their open positions,

a pawl 27 is pivoted between the pair of plates 9-10 at 28 and its free end is adapted to engage suitable ratchet teeth 29 provided in the edge of the bar 21. A pushpin 30is arranged between the rearwardly extending upper ends 11-12 of the plates will lift the pawl 27 out of engagement with the ratchet teeth 29 of the bar 21, and upon relieving the pressure upon said handles, the movable arm 13 and the stationary arm 6 will be forced together by the action of the valve spring.

It is thought that from the description and drawings, the construction and operation of the valve spring lifter herein disclosed will be fully understood without further explanation, and that its advantages will be appreciated.

Having fully described my invention what I claim is:

I. In a. valve spring litter, the combina tion of a stationary arm, a handle extending from the stationary arm, a movable arm supported on the stationary arm, a handle pivotally supported on the stationary arm, links pivotally connected to said arms and having free ends, and a bar pivotally connected to, the second mentioned handle and to the free ends of said links, substantially as described.

2. In a valve spring lifter, the combination of astationary arm, a handle extending from the stationary arm, a movable arm supported on the stationary arm, a handle pivotally supported on the stationary arm, means including a bar connecting the second mentionedhandle to said armsv whereby they will be actuated by the movement of the handles, and means for locking the bar to hold said arms in their open positions, substantially as described.

3. In a valve spring litter, the combination of a stationary arm, a handle extending from the stationary arm, a movable arm supported on the stationary arm, a handle pivotally supported on the stationary arm, links pivotally connected to said arms. and having free ends, a bar pivotally connected to the second mentioned handle and to the free ends of said links, and means for locking said bar in position to hold said arms in open position, substantially as described.

4. In a valve spring lifter, the combination of a stationary arm, a handle extending from the stationary arm, a movable arm supported on the stationary arm, a handle pivotally supported on the stationary arm, links pivotally connected to said arms and having free ends, a bar pivotally connected to the second mentioned handle and to the free ends of said links, the bar being provided with teeth, and a pawl pivotally supported. from the stationary arm for engaging the teeth, of said bar, substantially as described.

5. In a valve spring lifter, the combination of a stationary arm, a handle extending from the stationary arm, a movable arm supported on the stationary arm, a handle pivotally supported on the stationary arm, links pivotally connected to said arms and having free ends, a bar pivotally connected to the second mentioned handle and to the free ends of said links, the bar being pro vided with teeth, a pawl pivotally supported from the stationary arm for engaging the teeth of said bar, and means for disengaging the pawl from said teeth to release the bar, substantially as described.

6. In a valve spring litter, the combination of a stationary arm, a handle extending from the stationary arm, a movable arm supported on the stationary arm, a handle pivotally supported on the stationary arm, links pivotally connected to said arms and having free ends, a-ba-rpivotally connected to the second mentioned handle and to the free ends of said links, the bar being provided with teeth, a pawl pivotally supported from the stationary arm for engaging the teeth or" said bar, a push-pin pivoted to the pawl tor disengaging the pawl from said teeth to release the bar, and a spring tending to hold the push-"pin in its outer position to keep the pawl in engagement with the teeth of the bar, substantially as described.

7 In a valve spring litter, the combination of a stationary arm, a handle extending from the stationary arm, a bracket extending from the stationary arm, a movable arm supported on the bracket, a handle pivotally supported on the bracket, and means connecting the second mentioned handle to said arms whereby they will be actuated by the movement of the handle, substantially as described.

8. In a valve spring litter, the combination of a stationary arm, a handle extending from the stationary arm, a bracket extending on the stationary arm, a movable arm supported on the bracket, a handle pivotally supported from the bracket, a lug extending from the second mentioned handle, links pivotally connected to said arms and having free ends, and a bar pivotally connected to said lug and to the free ends of said links, substantially as described.

9. In a valve spring lifter, the combination of a stationary arm, a handle extending from the stationary arm, a movable arm supported on the stationary arm, a. handle pivotally supported on the stationary arm. links pivotally connected to said arms and having free ends, abar pivotally connected to the second mentioned handle and to the free ends of said links, and the bar being of such length that said lug will engage said bracket to prevent said links reaching an alining position, substantially as described.

In testimony whereof I affix my signature.

JOHN J. BARTENSTEIN.