US1887390A - Hydraulic valve lifter - Google Patents

Description

1932. M. s. ANTHONY ET AL 1,837,390

HYDRAULIC VALVE LIFTER Filed May 17. 1930 2 SheetsSheet 1 INVENTOR ATTORNEY 1932. M. s. ANTHONY ET AL 1,887,390

HYDRAULIC VALVE LIFTER Filed May 1'7, 1950 '2 Sheets-Sheet 2 m 1 1 g m INVENTOR ATTORNEY Patented Nov. 8, 1932 UNITED STATES PATENT oFF c MERTOIN s; ANTHONY, 0F ADAMs, AND ER EST H. wI'LsoN, or PITTSFIELD, MASSACHUSETTS @rrYnaAULIc VALVE LIFTER Application filed May 17, 1930. Serial No. 453,332.

- This invention relates to a device for lift ing the valves of internal combustion engines and has as its primary-object to provide adevice for this purpose which will, be so constructed that its use will'overcome the in an elevated position until the elevating means is rendered inactive, so that there V will be nolikelihood of the valve stem moving downwardly, unintentionally, and causing injury to the mechanics fingers as frequently happens where lifting tools of the ordinary type are employed.

Another object of the invention is to pro'-, vide a lifting device which will be devoid of gears, threading adjusting devices, or any other mechanical means for effecting lifting of the valve and which will therefore not be liable to a disarrangement of its parts and may be more readily placed in position and actuated than lifting devices embodying such mechanical elements.

Another object of the invention is to provide a valve lifting device which will operate under fluidpressure, to elevate the valve to which it is applied and, in this connection the invention has as a further object to provide a manually operable fluid pressure unit which will efiectually serve its purpose and thereforeadapt the device to beused where no source of fluid pressure, generated by power means, islavailable. The device of the present invention embodies," in its lifting unit, a plurality of hollow tubular parts which are relatively displaceable by the introduction into the assemblage of' a fluid underpressure so thatthese parts will be elevated, by the pressure of the fluid, in succession, thereby greatly increasing the range of usefulness of the device andadapting it to elevate a valve to desired height and also due to the compactness ofthe assemblage when collapsed, adapt the device to beemployed in connection with internal combustionengines wheretheengine parts are so relatively arranged as to render the Valve stems, to be lifted, practically inaccessibleby the use of ordinary tools.

This invention also consists in certain other features of construction and in the combination and arrangement of the several parts, to be hereinafter fully described, illustrated in the acompanying drawings, and specifically pointed out in the appended claims, it being understood of course that minor changes may be made so long as they fall within the scope of the claims.

In describing our invention in detail, ref

erence will be had to the accompanying drawings, wherein like, characters denote like or corresponding parts throughout theseveral views, and in which 3 I V Figure l is a view partly in section and partly in elevation illustratingthe valve lift ing unit of the invention, the parts of the units being illustrated in the positions which they will assume when the unit is initially assembled with the valve stem.

Figure 2 is a plan View of the valve lifting unit. Figure 3 is a 7 vertical sectional view through the valve lifting unit,the component parts of the'assemblage being shown in full extended rel-ationshipto one another,

Figure 4 is a similar viewillustr-ating all of the par-ts of the assemblage, nested, or collapsed. A F igure'5 is a longitudinal sectional View through the manually operable fluid compressing unit; 7 i

The valve lifting unit comprises abase member 1 which is formed with a threaded opening, 2 and this base member is flat upon its under side so, that it maybe disposed upon a part of the internal combustionengine' as shown in Figure 1 of the drawings and, in

order that the base may be held against displacement with respect to the valve stem, which stem is indicated by the numeral 3, the base is provided with an extension 4wh'ich of the base and which is formed witha reoccupies the same plane as the under side pm 9 at its upper end at the upper end of the said cess 5 of dimensions to adapt the extension to be fitted to the stem in position substan tially embracing the same as shown in said Figure 1. I

As previously stated, the valve lifting unit comprises an assemblage of parts and the numeral 6 indicates a tubular member which is exteriorly threaded at its lower end and is provided with a bore 7, this bore being closed at the lower end of the member and opening member, and the lower end of the bore -7 is provided with a right angular branch 8 and, for a purpose to be presently explained, is formed in one side with a vertically extending groove 9. This groove extends less than the'hei'ght of the member 6 and a tubular barrel 10 is slidably, telescopicallyfitted" to the stem 6 and is open at both of its ends and is formed in one side with a longitudinal slot 11 which is in registration with the groove 9. v

The numeral 12 indicates a cylinder which is closed at its upper end as indicated by the numeral 13 and telescopically fitted to the tubular barrel 10, and a stud 14 projects inwardly from the cylinder 12 at the lower end of-the cylinder and is engaged through the slot 11 and in the groove 9, and by reference to Figures 3 and 4 of the'drawings, it will be evident that this stud prevents any relative rotation of the parts of the assemblage. The cylinder 12 is exteriorly threaded at its lower portion as indicated by the numeral 15 and the lower end ofthe cylinder is fitted into a threaded opening 16 formed in a flat sided head 17 which is provided with an extension formed with a recess 18 which is similar to the recess 5 in the extension 4 of the base 1 and is adapted to straddle or embrace the valve stem 3, and it will be evident, at this point, that the said extension is engageable, at its upper side, beneath the usual washer 19 which is mounted upon the valve stem 3 and against which the lower end ofthe valve spring 20 bears. It will be evident, likewise, that the threaded engagement of the head 17 with the cylinder 12, provides for vertical adjustment of the head and its extension, with respect to the cylinder 12, so that the device may be adjusted to provide for the engagementof the extensionof the head 17 to be engaged beneath the washer 19 of valves of different types where this washer is located at various elevations.

In order that thehead 17 may be held in its positions of adjustment, an annular, milled lock nut 21 is threaded onto the said barrel 12 and is adjustable to bear against the upper side of the head 17. 1

By the manually operable'fluid pressure unit, above referred to, fluid under pressure is admitted into the bore 7 of the member 6, in a manner which "will presently be explained, and it will be evident, from the forewillengage against the upper end wall of the slot and the barrel 10 and cylinder 12 will then move in unison upon the admission of a further volume of the compressed fluid into the b0re'7 and into the bores of the said barrel and cylinder, finally the stud 14 will engagefinthe upper end of the groove 9, and at this time the component parts will then assume the relative positions shown in Fig-' ure 3 of the drawings. 1 V V The fluid'compressingunit constituting a part of the invention is shown clearly in Figure5 of the'drawings and this unit comprises a cylinder 22 to the ends of which are fitted, by suitable threads, heads indicated one by the numeral 23 and the other by the numeral 24. V r v r A conical opening 25 is formed in the head 24 and a nipple-26 is provided with a conical end 27 which is threaded and fitted into this opening. A socket member 28 is disposed against the outer end of the nipple 26 and a collar 29 is threaded onto the said nipple 26 and confines the socket member and binds the same against the endof the nipple in a fluidtight manner. A flexible hose 30 is fitted in the socket member 28 and this hose is led to a connecting means indicated in general by the numeral 31 in Figures 1, 3 and 4 of the drawings and which corresponds in all respects to the connecting means just described, the nipple of the connecting means 31 being threaded into one end of the base 1 so that its bore will be in communication with the branch 8 of the bore 7 of the tubular member 6. The numeral 32 indicates in general a piston which is slidably mounted in the cylinder 22 and which is of the usual constructionto provide for a fluid-tight fit of the piston in the cylinder, and this piston is mounted at one end of a piston rod 34 which is threaded and adjustably fitted through a threaded opening 35 formed in the head 23. A handle member 36 is fitted to the outer end of the piston rod 34 and it will now be evident that,

in the use of the device, the lifting unit will 7 be assembled with the valve stem in the manner shown in Figure 1 of the drawings, and

the piston rod 34 will then be rotated by manipulation of the handle 36 so as to feed the piston 32 longitudinally in the cylinder and thus compress oil or other fluid which has been introduced intothe cylinder by unthreading the head 23 and withdrawing the piston,

From the foregoing description of the invention it will be evident that, when the,

component parts of the'lifting unit are telescopically collapsed as shown in Figure 4, the unit will be exceptionally compact and it will also be evident that due to the construction of the unit in a number of sections which are elevated successively as fluid under pressure is delivered from the cylinder 22, the compression of the fluid being effected by a manually operable means, the device as a whole constitutes a very compact one which may be conveniently stored in an automobile and brought into use in a few moments time and operating without the necessity of resorting to an extraneous source of fluid under pressure.

As the elevation of the valve stem washers such as the washer 19 varies greatly in clifferent makes of internal combustion engines, it may be found desirable to form the extension of the head 17 with an o'fis'et 37 as illustrated in Figure 4 of the drawings, this offset being extended downwardly so as to adapt the extension to rest directly uponthe extension 4 of the base 1, in the telescoped arrangement of the parts comprising the lifting unit.

What we claim is A valve lifting device comprising a tubular member having a supporting'base portion, a tubular barrel, open at both ends,

slidably fitting the tubular member, an externally threaded cylinder vertically movable with respect to the said tubular barrel,the tubular member having a bore communicating with the cylinder, means for supplying fluid under pressure to the bore of the tubular member and thereby efi'ect upward movement of the cylinder, a valve stem engaging member threadedly mounted on said cylinder for vertical movement and extending laterally from the said cylinder, the said tubular member having a groove extending vertically thereof, the said barrel having a slot registering with the groove, and a pin projecting inwardly from the wall of the cylinder and engaging in the said slot and groove to hold the parts against relative rotation and limit the movement thereof with respect to each other.

In testimony whereof we affix our signatures.

MERTON S. ANTHONY. ERNEST H. WILSON.

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