US2450293A

US2450293A - Valve puller

Info

Publication number: US2450293A
Application number: US598036A
Authority: US
Inventors: Harold L Oserowsky
Original assignee: Individual
Current assignee: Individual
Priority date: 1945-06-07
Filing date: 1945-06-07
Publication date: 1948-09-28
Anticipated expiration: 1965-09-28

Description

' Sept. 28, 194 H. L. OSER-OWSKY 2,450,293

VALVE FULLER Filed June '7, 1945 INVENTOR.

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Patented Sept. 28, 1948 UNITED STATES PATENT OFFICE VALVE PULLER Harold L. Oserowsky, Bay City, Mich.

Application June 7, 1945, Serial No. 598,036

'1 Claim. 1 This invention relates to improvements in valve pullers and has as its principal object the provision of means for lifting a valve from a cylinder block in such manner that the pull is exterted in direct vertical alignment with the axis of the valve, so that any tendency to set up bending stresses in the valve or in the valve stem is eliminated.

Another object is to provide a valve puller that uniformlyengages practically the entire under face of the valve, thereby distributing the pulling stresses over the entire area of the valve, avoiding bending stresses and chipping along the edges of the valve proper.

A further object is to design an adjustable valve puller which is readily adjustable to accommodate valves of various sizes and which can be quickly attached to and/or removed from the valve.

Still a further object is to provide a threaded stem equipped with a freely rotatable disk, said stem being adjustable to move the disk into and out of engagement with the face of the valve and to compensate for valves of various sizes and thicknesses.

With the above and other objects in view, the present invention consists in the combination and arrangement of parts, hereinafter more fully described, illustrated in the accompanying drawing, and more particularly pointed out in the appended claims, it being understood that changes may be made in the form, size, proportion and minor details of construction without departing from the spirit, or sacrificing any of the advantages of the invention.

In the drawing:

Fig. 1 is a side-elevational view of my improved valve lifter as applied to a valve, the engine block being shown in section.

Fig. 2 is a fragmentary side-elevenational edge view, the broken lines indicating the range of adjustment.

Fig. 3 is a top plan view taken on the line 33 of Fig. 1.

Fig. 4 is a fragmentary, part-sectional view showing the rotatable disk fixed on the end of the adjustable stem.

The valves of internal combustion engines often become gummy, coated with carbon etc., and require considerable force and/r shock to effect their removal for grinding, replacement or for any other purpose, this pulling force must of necessity be in alignment with the vertical axis of the valve to avoid bending of the stem, and care must be exercised to avoid chipping the edges of the valve, and I have therefore perfected a valve puller in which the pulling force is always in vertical alignment, and the edges of the valves protected, said puller being readily operable so that stuck valves can be readily and easily removed without d-amage to the valve proper or bending of the stem.

Referring now more particularly to the drawing in which I have shown the preferred embodiment of my invention; the numeral 5 indicates the motor block of a conventional internal combustion engine provided with a valve seat 6 as usual, and a valve 7 is mounted therein in the conventional manner.

The valve puller includes a gripping member G comprising vertically spaced

disk sections

8 and 9 respectively connected by the vertically disposed web it! as clearly shown in Fig. l of the drawing, this web extending partially around the outer circumference of the disk sections, with the open section I! forming a passage to accommodate the head of the valve 1, the lower disk section 9 being formed with a slotted opening [2 which accommodates the stem E3 of the valve and permits ready positioning of the valve in the gripping member, the edges of the slotted passage being beveled as at M to eliminate chipping or marring of the valve head.

A hub I5 is formed integral with the upper disk section 8 of the gripping member G, and is centrally bored and threaded as at I6 to accommodate the lower threaded end of the stem [1, an intermediate disk 3 being revolvably mounted on the lower end of the stem by means of the shouldered screw IS.

A knurled head 20 is provided on the upper end of the stem I1, and a striker member 2! is slidably mounted on said stem, the ends 22 being beveled as shown, the upper end engaging the head 20 to impart a sharp hammer blow when the tool is operated.

The striker member 2| is slidably mounted on the stem l1 and is relatively heavy, the end sections 22 being tapered and reduced to eliminate the possibility of pinching, and this striker memher, in practice, is forced upwardly against the head 20 to form a sharp impact or hammer blow when the tool is in use.

In operation, the gripping member G is first moved over the head V of the valve, the valve stem I3 being accommodated in the slot l2, and when the valve is in centered position, the operator grasps and rotates the knurled head 20 to thread the stem downwardly through the disk section 8 until the intermediate disk I8 is in intimate contact with the head of the valve, after which the operator grasps the striker 2 I, forcing it upwardly against the head 20 to produce a sharp shock or hammer blow, and one or more of said shocks usually frees and lifts the valve, Whereupon the freed valve is disengaged from the gripping member, and the tool is then ready for use on the next valve.

The device can be utilized for removing truck or tractor valves or other valves of'larger size, as theintermediate disk I8 has a considerable range of vertical adjustment, but the removing operation is identical with that above described.

The gripping member G can b made in any desired manner, it can be formed of two individual disks connected by studs, pins or other means (not shown), but I find that forming it in one integral unit as shown in the instant application is very satisfactory.

From the foregoing description, it will be obvious that I have perfected a very simple, practical, and inexpensive valveremoving tool for removing valves from engines.

What I claim is:

In a valve puller comprising spaced-apart connected disks forming a valve head accommodating chamber therebetween, a valve head opening in the outer periphery thereof, a centrally disposed threaded opening in the upper disk, a vertical stem threaded therein, and extending into said chamber, a relatively thin, intermediate disk connected to the end of the stem within said chamber, said disk being vertically adjustable as the stem is rotated to accommodate valve heads 1 of various sizes in the chamber between the lower disk and the intermediatedisk.

HAROLD L'. OSEROWSKY.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS