US1627477A

US1627477A - Valve and cage puller

Info

Publication number: US1627477A
Application number: US53615A
Authority: US
Inventors: Blume Henry; George B Streitz
Original assignee: Individual
Current assignee: Individual
Priority date: 1925-08-31
Filing date: 1925-08-31
Publication date: 1927-05-03
Anticipated expiration: 1944-05-03

Description

@ndr/Majo H. BLUME ET AL May 3 1927.

VALVE AND CAGE PULLER Filed Aug. s1. 1925 Patented May 3, 1 927.

r' fram ortica.

lHENRY BLUME AND GEORGE B. s'rREITz, oF JORDAN, `mNNEsoT'A.

VALVE AND CAGE FULLER.

Application led August 31, 1925.- Serial No. 53,615.

This invention relates to devices for removing the valve cages and valve springs from motors in which yvalves are located in the motor head. The invention also has ref- 5 eience to a valve removing device of a type embodying a vertical shank having a head and impact member slidable along said shank to strike the head and exert upward impulses on the shank, so as to remove the l0 valve, valve cage and spring, when the lower end of the shank is connected operatively with these parts. Heretofore, it has been customary to provide resilient legs on the lower end of the shank, said legs'being adapted to engage the usual valve spring cap at the upper end of the valve stern. Much difficult however is encountered in engaging the legs with the cap, and when applying the tool as well as when operating it, there is danger of injurin the cap as well as the valve stem, and possibly the valve proper also. It is the intent of our-invention however to provide a new and improved construction in which the legs at the lower end of the shank are of different lengths to accurately engage a convolution of the valve spring at diametrically opposite points, said legs having hooks to engage the spring.

These hooks may be easily engaged vwith the spring by lateral shifting of the tool with respect to said spring and when leach impact is imparted to the shank by the slidable impact member, such impact is cushioned as 1t is transferred to the valve, through the instrumentality of the spring. Thus, not only may the device be applied to the valve much more easily than similar devices heretofore in use, but as each blow of the iinpact member is cushioned by the valve spring, there is no danger of injuring any part of the valve assembly.

Figure 1 is a side elevation of a valve removing tool constructed in accordance with our invention.

elevation and illustrating it operatively' associated with a valve assembly, before removing the latter. v Y

In the drawings above briefly described,

having a knocking ead 2 at its upper-'end and provided at its lower end with diametrically opposed, longitudinally extending Figure 2 is a smaller view of the tool in the numeral 1 desiglnates a straight shank i legs 3 and 4 which are adapted to straddle the upper end of a valve spring 5 and its usual cap 6. The legs 3 and 4 are of different lengths and they are provided at their extremities with inwardly projecting hooks T and 8 respectively, said hooks being adapted to hook under diametrically opposed portions of a convolution of the spring 5, as shown fully in Figure 2. The hooks may be readily engaged with the spring, by shifting the tool laterally with respect to said spring, and it is unnecessary to form the legs 3 and 4 from resilient material as has heretofore been done when such legs must be engaged with the valve cap.

n impact member 9 is shown slidably mounted upon the shank 1 and adapted to be forced upwardly along the same into contact with the knocking head 2. When this is done, an upward force' is exerted on the shank and the legs 3 and 4, and this force is transferred by the hooks 7 and 8 to the spring 5, which in turn yieldably transfers such force to the valve cap 6. Thus, the latter pulls upwardly upon the valve stein 10, causing the valve proper 11 to thrust upwardly thus be seen that by repeatedly the impact member 9 upwardly, forcible upward impulses will be imparted to the valve assembly to remove it from the cylinder shifting head, and even though these impulses are suiliciently forcible to obtain tlie desired result, there is no possibility of injuring any parts of the valve assembly, as all impulses are cushioned by the upper portion of the spring 5, as they are imparted to said assembly. ,v

Excellent results are obtainable from the details disclosed and they are therefore preferably followed. However, within the scope of the invention as claimed, slight modifications may be made.

We claim:

A removing tool for an overhead valve comprising a shank having a knocking head at .its upper end and provided at its lower en with a pair of laterally spaced longitudinally extending integral legs parallel to and offset from said shank at their junction with the shank and adapted to straddle the valve stem cap and the upper portion of the valve spring, said legs being of different upon the usual cage 12. It will lengths and having inwardly turned hooks impulses are 7ielduhly imparted to the valve at their extremities to engage under diaassembly by the engagement of the hooks metrically opposite portions of a eonvoluwith the spring of said assembly.

tion of the valve spring, and an impulse In testimony whereof we have hereunto 5 member sliclably mounted on the shank Jfor affixed 'our signatures.

cO-:ietion with said knocking head in pro- HENRYBLUBIE.

dueing upward impulses on Vthe tool, which GEORGE B. STREITZ.