US1100155A - Valve-remover. - Google Patents

Description

0. E. SMITH & A. H. TUCKER.

VALVE REMOVER. APPLICATION FILED MAY 20 1913.

1,100,155, PatentedJune16,1914. I

UNITED STATES PATENT OFFICE.

CLARENCE B. SMITH AND ALBERT H. TUCKER, OF PROVIDENCE, RI-IODE ISLAND.

VALVE-REMOVER.

Specification of Letters Patent.

Patented June 16, 1914:.

Application filed May 20, 1913. Serial No. 768,840.

Toall whom it may concern Be it known that we, CLARENCE R. SMITH and ALBERT H. TUCKER, citizens of the United States, residing at Providence, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Valve-Removers; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to new and useful improvements in valve removers, and has for its object to provide a means whereby the compression may be removed from the springs of internal combustion engines when it is desired to release the valves from their position in the ends of the cylinders.

Another object of our invention is to provide a device of the above character which shall comprise only three pieces, thereby simplifying the construction of such devices and rendering them comparatively inexpensive.

A still further object of our invention is to provide a device wherein each of the parts will be independent of the other and, should any one of the parts become inoperative for any reason, it can be easily and quickly replaced at a comparatively small expense.

With the above and other objects in view, we will now proceed to describe our invention in the following specification and accompanying drawings, in which Figure l is a longitudinal sectional view of a fragment of an internal combustion engine showing our improved valve lifter applied to the usual type of valve; Fig. 2 is a top plan view of our improved valve lifter; and Fig. 3 is a sectional view taken on line 3-3 of Fig. 1. Fig. 4 is a detail sectional view of the sliding block, by means of which the U-shaped member may be adjusted.

Referring to the drawings by characters of reference, 1 indicates the usual cylinder of a gas engine, having adjacent its upper extremity the usual valve chamber 2. This valve chamber 2 is provided with the usual. opening 3 through the head of the cylinder, through which a valve, indicated generally at 4, is adapted to pass when it is being removed. This valve 4 preferably comprises a mushroom head, as shown at 5, which tapers downwardly and is adapted to seat, as clearly illustrated at 6. The usual chamber 7 is provided immediately adjacent the chamber 2, which chamber is connected to the usual inlet or exhaust manifold. A suitable plug 8 is threaded into the lower wall of the chamber 7 and is provided with a central aperture, through which the valve stem 9 is adapted to slide. This valve stem 9 is provided intermediate its ends with a collar 10, against which the coil spring 11 is adapted to operate during the time the motor is in operation.

Our improved valve lifter preferably comprises the U-shaped member 12, having one arm extended, as clearly illustrated at 13, and provided with ratchet teeth 14, the use of which will be more fully hereinafter described. The short end of the arm, indi cated at 15, is provided at its lower extremity with a pin 16, which pin 16 is adapted to enter the usual recess formed in the end of the valve 4, as is clearly illustrated in Fig. 1.

The lever mechanism of our improved valve lifter preferably comprises the bar 17, which is provided at one extremity with a handle portion 18, and the opposite extremity with the bifurcated portion 19. This bifurcated portion is preferably provided with the arms 20 and 21, through which the stem 9 of the valve is adapted to pass when the device is in operation.

A slidable block is provided, having the longitudinal grooves 23. This sliding block is provided intermediate its ends with a transversely extending aperture 24. A longitudinal aperture 25 is also provided, which communicates with the aperture 24 and extends to the rear end of the block, as clearly illustrated in Fig. 4. A catch 26 is slidably mounted in the aperture 25 and is provided with a stem 27, around which the coil spring 28 is adapted to pass. This stem 27 is extended,'as clearly shown, and terminates at the extremity opposite the catch 26 in an enlarged head 29. One extremity of the coil spring 28 bears against the latch 26 and its opposite end is seated in a recess adjacent the end of the aperture 25. The grooves formed in the sliding block will form guides 30 which, in turn, will overlie a portion of the body portion of the handle, and provide means to guide the block and prevent the same from coming out of alinement when in position in the slot.

A collar 16 is secured to the short end of the U-shaped member immediately adjacent the downwardly projecting extension 16, and is adapted to be pressed against the upper surface of the valve immediately adjacent to the recess formed therein.

It will be clearly seen, upon referring to the drawings, that when it is desired to remove a valve from its position in an engine cylinder, the short arm 15 of the U- shaped member 12 is placed in position at the top of the valve, the lever 17 is then passed upwardly with the arm 13 of the U-shaped member extending through the aperture 24 formed in the sliding block. VI hen the lever is brought to the desired position, the bifurcated end 19 is slipped beneath the lower extremity of the spring 11, and upon exerting downward pressure upon the handle 18 it will be obvious that the spring will be compressed and the abutment against which the spring is adapted to rest when in its normal position may be easily removed, thus permitting the spring to extend to its full length as soon as the valve remover is moved from its position on the valve, at which time the valve may be removed from its position in the cylinder without having the spring interfere in any wa iil hile in the foregoing we have shown and described the preferred embodiment of our invention, we wish it to be understood that we may change the specific arrangements of parts without in any way departing from the spirit and scope of the appended claims.

Having thus fully described our invention what is claimed is:

1. In a device of the character described, a U-shaped member, one arm of said U- shaped member being extended and provided with ratchet teeth, a bifurcated lever adapted to cotiperate with the U-shaped member 'and a slide mounted between the arms of the bifurcated lever and provided with a transversely extending aperture adapted to receive the elongate arm of the U-shaped member and hold the whole in operative relation.

2. In a device of the character described,

a U-shaped member having an elongated arm and teeth formed thereon, a lever, one end of said lever being bifurcated, a handle formed at the opposite end of said lever, a slide mounted in the bifurcated end of the lever, said slide having a transverse aperture extending therethrough and a longitudnial aperture connnumcating w1th the transverse aperture, a pawl carried inthe l I longitudinal aperture and adapted to extend into the transverse aperture and engage the extended arm of the U-shaped member when the device is in use.

3. In a device of the character described, a U-shaped member having an elongated arm formed thereon, ratchet teeth formed integral with said arm, a lever having a longitudinally extending slot in one end thereof and a handle formed at the other end, a slide mounted in said slot, said slide having a transversely extending aperture formed therein and a longitudinally extending aperture communicating with the transversely extending aperture, a pawl slidably mounted within the longitudinally extending aperture and adapted to engage the ratchet on Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.

Images