US1378463A - Valve-remover - Google Patents

Description

U. E 6. JOHNSON,

VALVE REMOVER.

APPLICATION FILED FEB. 26. 1920.

I 1,378,463. I Patented May17 ,19.2 1.

3 SHEETS-SHEET 1. W ,19

U. E. G. JOHNSON.

VALVE-REMOVER. APPLICATION FILED FEB. 26, 1920.

1,378,463. Patented May 17,1921.

' SSHEETS-SHEET 2.

U. E. G. JOHNSON.

VALVE REMOVER.

APPLICATION FILED FEB.26,.1920.

Patented MW, 1921.

s SHEETS-SHEET s.

UaiT D STATES PATENT OFFICE.

ULYSSES E. e. JOHNSON, or rrrrsrrnnn, Massaonusnr'rs.

VALVE-REMOVER.

Specification of Letters Patent. 1 P t t May 17,

Application filed February 26, 1920., Serial No. 361,428.

To all whom it may concern:

Be it known that I, ULYSSES SON, a citizen of the United States, residing at Pittsfield, Massachusetts, have invented scription and claims when taken in connec-.

tion with the accompanying drawings, in which r Figure l is a perspective view of the valve removing tool in operative position on the top of an engine cylinder;

Fig. 2, a top plan view;

Fig. 3, a part sectional and part perspective view showing particularly the construction of the tool head;

Fig, i, a view along the line 4 a, Fig. 3;

Fig. 5, a view along the line 55, Fig." 3;

Fig. 6, a view along the line 6-6, Fig. 3; Fig. 7, a view along the line 7'7,,Fig. 1 and Fig.8 is a top plan view showing my invention in actual use on the engine of the Buick type.

Referring to the drawings, 1 designates an engine cylinder, in an opening 2 of which is seated the valve assembly comprising a valve cage 3 having ports, one of which designated at 4communicates directly with the combustion chamber 5 of the cylinder. A valve 6 is shown seated in the port 4, which valve may be either an inlet or exhaust valve. The stem 7 of the valve extends through the valve cage and projects beyond the same, being longitudinally movable through a guide 8, consisting of a tubular extension of the valve cage. The valve is normally held closed by the usual spring 9, one end of which is sustained by a cup 10 which E. G. JOHN.

is adjacent to the cage 3, and the other end by the cup washer or cap 11 which is held in place on the valve stem 7 b the usual in or key '12. y p

All of the parts thus far described are of the usual construction and arrangement now in common use in engines of the valve in the head type.

' The valve assembly removing tool of this invention comprises a substantially U-shaped frame or yoke 14, which is inverted when in its operative'position, said frame comprising an arched crown top 15 and substantially parallel legs 16. The distance between the legs is such that the yoke 14 may straddle the valve assembly and rest directly upon the top'of the cylinder, as shown in Fig. 1. The, crown of the yoke is formed into a socket 17, in which a head 18 is mounted for rotation. This head is interiorly screw-thread ed and may be shaped on its exterior such as to readily accommodate a wrench, and in addition an opening through said head may ac commodate a cross-bar 19, which cross-bar may also be used for rotating the head. In order to hold the head in place withinthe socket 17, the head is formed with a circular groove 20 near its lower end, and a ring or screw is passed through the socket 1.7 for engagement with said groove.

Valve engaging jaws 21 are pivotally supported inthe bifurcated end 22 of a' jack-- screw 23, having'threads to fit the threadsof the head 18. The jaws are constrained to move in a single plane in said jack-screwor jaw-supporting member 23, and in order to i provide a tool which is adapted to various models of engines, the said jack-screw is mounted so that it cannot rotate during its up and-down movement in the head, 1 and preferably such rotation is prevented byproviding an opening in the crown of the yoke, said opening having flattened sides 24, the sides of the j ack-screw 23 being correspondingly flattened. It will be noted, by reference to Figs. 4 and 5, that the plane formed by the flattened sides makes an angle with the vertical plane of the legs of'the yoke, and this angle is preferably such that the jaws may open beyond the yoke legs but are in close proximity to said legs. This is an important feature, as it enables a tool of the present invention to be used 011 some models of engine where it would be impossible to use a tool having the jaws moving in a plane at a right angle or at substantially a right angle to the plane of the yoke. Said legs preferably act as guides during the opening and closing movement oi said jaws. Furthermore, the jaws moving in this manner make it convenient to grasp them in attaching the tool to the top of the valve cage with the left hand, while leaving the right hand free to adjust the jaws to the valve spring when the-tool is in place.

It will also be noted that the jaws are attacheddirectly to the jaw-supporting memher or jack-screw 23, dispensing with a crosshead or other cumbersome substitute, thus simplifying the construction.

In operation, the tool is placed in the position shown. in Fig. 1, the jaws 21 being placed to engage the spring 9 as shown, it being of course necessary to first remove the rockerarma25 from its connection with the valve cage, said-rocker arm being also disconnected from thecam-actuated rod 26, these parts operating in a manner well understood by those familiar with this art.

The'tool head, 18is then rotated either by the bar 19 or by means of a wrench. Any valve in a series may be removed independently without interferingwith. any other "In Fig. 8 which shows a practical applica tion of my improved device as applied to ai Buick engine of the 1919 20 type, .the' rocker arm-25 is shown as removed from the first cylinder 28 and the valve remover appliedto this particular valve. By reason of the fact that the aws 21 move in a plane close to the )lane of the le s of the 1 oke,

l e a each individual valve may be removed withapplied to the valve indicated, by 29 andfurthermore the jaws in this case would interiferewith the water connection shown at 32. Slmllarconditions would cause interference it the valve remover were applied to the valve 30 or the valve 31, readily apparent. I

,What I claim as new is: 1. In a valve removing tool, the combination with a yoke having supporting legs, of a pairof jaws supported in said yoke, said jaws having pivotal and vertical movement, means for constraining said jaws against rotational movement, said restrainas will "be ing means acting to confine said jaws in their pivotal movement to a vertical plane, which makes but a slight angle with the vertical means acting to confine said member to vertical movement in said yoke so that said aws 1n their pivotal movement may escape said legs but are constrained to move imme- 1 diately adjacent thereto.

In a valveremoving tool, the combination with a yoke having a head and supporting legs, of a supporting member mounted for vertical lmovement'in thehead of said yoke, jaws pivoted to said member and confined to movement in a single plane, said member being screw-threaded and being flattened to prevent rotation in said yoke head, said flattened portion of said screwthreaded member forming such an angle with the vertical plane of the legs of the yoke as to merely permit clearance of each leg by the jaw adjacent thereto.

4c. In a valve removing tool, in combination with a yoke having supporting legs, of jaws supported by said yoke, and means for, confining said jaws to open and close in a plane forming such an angle with the vertical'plane of the legs of the yoke whereby the legs of the yoke act as a guide for the jaw adjacent thereto in its opening and closing movements.

5. In a valve removing tool, the combina tion with a yoke having supporting-legs, a member rotatably mounted inthe crown of said yoke, said member being internally screw-threaded, a jaw supporting member engaging the threads of said first mentioned member, and jaws pivotally mounted in said jaw-supporting member and confined thereby to movement ina single plane,

6. In a valve removing tool, the combination with a'yoke having supporting legs, a member rotatably mounted in the crown of said yoke, said member beingiinternally screw-threaded, a jaw supporting member engaging the threads of said first mentioned member, jaws pivotally supported in said jaw supporting member, said yoke having a hole with flattened sides through which said jaw supporting member-passes, where'. by the latter is permittedvertical movement but is restrained from rotative movement.

7. In a valve removing tool, the combination with a yoke having supporting legs, a member rotatably mounted in the crown of said yoke, said member being internally screw-threaded, a jaw'supporting member engaging the threads of said first mentioned member, jaws pivotally supportedin said jaw supporting member, said yoke having a as to merely permitof the clearance of each hole with flattened sides through which said leg by the jaw adjacent thereto. 10 jaw supporting member passes, whereby the Signed at Pittsfield Mass, this 19 day latter is permitted vertical movement but of February, 1920.

is restrained from rotative movement, the U. E. G. JOHNSON. flattened sides of said member located in a Witnesses: I o vertical plane making such an angle with DANA S. MERRIMAN,

the vertical plane of the legs of said yoke F. HARRIS RAY.

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