US1390960A - Cylinder-head remover - Google Patents

Description

'F. E. MILLER.

CYLINDER HEAD REMOVER.

APPLICATION FILED SEPLS, I9I8.

1,390,960. Plltdsept- 13, 1921.

IIIIIIIIII F'. E Mllar' UNITED STATES FRANK E. MILLER, 0F DURAND, MICHIGAN.

. CYLINDER-HEAD REMOVER.

Specification of Letters Patent. l Patented Sept.,13, 1921.

Application led September 1918. Serial No. 252,436.

To all 'whom it may concern: '.Be it known that I, FRANK E. MILLER, a cltizen of the United States,and a resident of Durand, in the county of Shiawassee and State of Michigan, have invented certain new and useful Improvements ina Cylinder-Head Remover, of which the following is a specification. d

This invention relates to a tool particularly designed for facilitating the removal of cylinder heads from internal combustion engines, and an object of the invention is to provide a tool of this nature which will facilitate and permit the removal of a cylinder head without in any way mutilating the gasket between the cylinder block and the cylinder head.

In the operation of cleaning the carbon from internal combustion engines, it is necessary to remove the cylinder head, and heretofore such removal has been performed by prying the Icylinder head upwardly from the cylinder block by the use of a screwdriver, chisel or other similar wedge-shaped tool which is inserted between the head, and the cylinder block against the cylinder head gasket, consequently resulting in mutilation of the cylinder head gasket. The mutilation of the gasket either requires the provision of a new gasket, which is not always conveniently accessible, or results in inefficient operation of the engine through the leakage of oil, or compressed gas through mutilation formed in the gasket, and it is an object of this invention to provide a tool which is connected to the cylinder cap, at

i the opening' which normally carries the spark plug, at one endof which tool engages one of the valve heads of the engine so that upon operation of the tool, the cylinder head will be removed from the cylinder block without mutilation of the gasket.

Specifically, this inventionv comprehends the provision of atool as specified, comprising a s hank` externally screw-threaded throughout the major portion of its length and provided with a transverse opening near one end through which an operating bar extends and also to provide a pair of nuts which are threaded upon the shank of -the tool and have external screw-threaded portions adapted to lit within the internal threaded opening which normally receives the spark plugs of an internal combustion engine, the threads upon one nut being pro vvided to fit the stan ard threads employed for connecting one type of spark plugs to engines, while the external threads upon the other nut are provided to fit a different type of standard thread for spark plugs.

Other objects of the invention will appear in the following detailed description taken in connection with the accompanying drawing forming a part of this specification, and in which drawing:

Figure 1 is a fragmentary section through an internal combustion engine yillustrating the improved tool connected-thereto.

Fig. 2 is a longitudinal section through the tool.

Fig. 3 is a top plan of the improved tool.

Referring more particularly to the drawing, A indicates a fragment of the cylinder block of any oridnary type of internal combustion engine which has the cylinder head B thereof removably connected to the block. The cylinder head gasket, which is lpositioned between the facing surfaces of the cylinder block A and the cylinder head B, to provide a iuid tight joint, is indicated by the letter C and it is to prevent mutilation of this gasket, during the removal of the head B from the cylinder block, that the improved tool generically indicated by the numeral 1 is provided.

The tool 1, comprises Aa relatively long shank 2 which is externally screw-threaded throughout its major portion and has a head 3 formed upon one end of the same. The head 3 is provided with a transversely extending openin 4, extending centrally through the .hea 3 of the shank 2 and which opening removably receives a handle rod 5. The handle rod 5 is provided to facilitate the rotation of the shank 2 during the use of the tool.

A nut 6 is adjustably mounted upon the threaded portion of the shank 2, and it -is provided with a wrenchface 7 and an externally threaded shank 8 the threads of which shank are cut to fit one of the standard d nally threaded portions of the nuts 6 and 9,

greater number of engines now commonly in use.

In the operation, of the improved tool, the spark plug (not shown) is removed from the opening 14 in the cylinder head B and the threaded shank of either of the nuts 6 or 9 is threaded in this opening, securely connect ing the nut to the cylinder head B. The shank 2 is then rotated, and since the nut is rigidly connected to the cylinder head, rotation of the shank will move the same longitudinally through the nut and the lower end of the shank will engage the head 15 of one of the valves of the engines after which further rotation of the shankwill force the cylinder head B upwardly, as indicated in Fig. l of the drawing, moving this cylinder head above the cylinder block A suflicient distance to permit the insertion of the fingers beneath the same for further vremoving. the cylinder head B. The removal of the cylinder head B, by the improved tool, will not yin any Way mutilate the gasket D in that no part of the tool engaged the gasket during the removal of the cylinder head B.

Having thus fully described the invention, what is claimed is:

l. The combination with an engine cylin der Aand a. removable head therefor, of a tool for facilitating the removal of the head from the cylinder comprising means for connecting the tool to the head, and adjustable means for forcing the head from the cylinder upon adjustment thereof.

2. The combination with an engine structure including a cylinder and removable head therefor, of a tool for facilitating the removal of the head from the cylinder comprising means for connecting the tool to the head, and adjustable means adapted to engage a portion of the cylinder structure for forcing the head from the cylinder upon adjustment thereof.

3. The combination with an engine structure including a cylinder and removiable head therefor provided with a spark plug receiving opening, of a tool for facilitating the removal of the head from the cylinder comprising means engageable in said opening to rigidly connect the tool to thel head, and adjustable means for forcing the head from the cylinder upon adjustment thereof.

ktatin cy-lin er comprising a nut having an ex# ternal threaded portion for engage-ment iny 4.' The combination with an engine structure including a cylinder and a removable head therefor provided with a spark plug receiving opening, of a tool for facilitating the removal of the head from the cylinder comprising a threaded shank, a nut mounted upon said shank and provided with an ex*- terior threaded portion engageable in said opening to rigidly connect the nut to said head, said shank adjustable through said nut and adapted to engage a portion of the engine structure to force the head from the cylinder.

5. The combination with an engine structure including a cylinder, a removable cylinder head, land a gasket between the cylinder and' head, of a tool for facilitating the removal of the head from the cylinder comprising' means for rigid attachment to said head, 'adjustable means carried by said first named means for engagement with the cylinder remote from said. gasket for forcing said head from the cylinder.

6. The combination with an' engine structure including a, cylinder, a removable cylinder head having a spark lug receiving opening therein, and a gas ret between the cylinder and head, of a tool for facilithe `removal of the head from the said opening, a shank adjustably carried by said nut'and adapted for engagement with the cylinder remote from said gasket for forcing said head from the cylinder.

7. A tool for removing cylinder heads from cylinders comprising in combination, a threaded shank provided with a head at one end thereof, and a nut in threaded engagement on said shank, said nut provided with external screw threads and a wrench receiving formation at its end portion nearest the head of said shank.

8. An internal combustion engine having, in combination, a cylinder, a removable head therefor provided with a screw-threaded orifice, a valve in alinement with said screw-threaded orice and a screw engaging said screw-threaded orifice and adapted to engage at its inner end said valve whereby said valve may be pressed and held' firmly against its seat and said head forced oli' of said cylinder.

FRANK n. MILLER.

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