US2165367A

US2165367A - Hydraulic lifting jack

Info

Publication number: US2165367A
Application number: US247877A
Authority: US
Inventors: Frank L Gormley; Hugh S Brown
Original assignee: BUDA CO
Current assignee: BUDA CO
Priority date: 1938-12-27
Filing date: 1938-12-27
Publication date: 1939-07-11
Anticipated expiration: 1956-07-11

Description

y 1939; F. L; GORMLEY ET AL 2,165, 7

HYDRAULIC LIFTING JACK Filed Dec. 2'7, 1958 2 Sheets-Sheet l z A/ f /V/,

1 V I Inventors: 13 47 4:3 FrankLGormlcy,

Jlughili'rown,

.flity.

- July 11, 1939. F. L. GORMLEY rm. 2,165,367

HYDRAULIC LIFTING JAGK Filed Dec. 27, 1938 2 Sheets-Sheet 2 '11 Inventors;

F w J FrankLGormley,

Patented July 11, 1939 UNITED S TE amass: mmnamo ur'rmc. men

Frank 11. Gormley, Chicago, and Hugh S. Brown, Harvey, 111., assignors to The Buda Company, Harvey, 111., a corporation of Illinois Application December 27, 1938. Serial No. 247,377

11 Claims.

The present invention relates to improvements in hydraulic jacks and has-for its main object 15 of which the invention consists can be variously arranged and organized, and the invention is not limited to theprecise arrangement and organization of these instrumentalities as herein shown and described except as required by the scope of 20 the appended claims.

f the drawings Figure 1 represents a vertical section of a hydraulic jack embodying the-principles of the.

present invention.

Figure 2 represents a plan of said jack. Figure 3 represents a horizontal section of same on line 3, 3 on Fig. 1.

Figure 4' represents a side elevation of the low-' er portion of said jack, and

Figure 5 represents a vertical section of the bearing for the upper end of the ram having a head fixedly secured thereto.

Similar characters indicate like parts throughout the several figures of the drawings.

36 In the drawings, III is a base plate having secured to the top thereof the lower section II of a standard, said section II being surmounted by an upper section l2, having a diameter greater than that of the section II, said section l2 having 40 an annular flange. l3 extending into an annular depression 14 in the upper end of section II and forming a water tight joint.

' The sections l I and 12 are secured by a tubular 5 member 15 threaded at opposite ends to. said sections and preventing separation thereof.

Within the member I5 is a ram 16 having at its lower end a piston I'I adapted to reciprocate lengthwise of said tubular member I5.

Beneath the piston I1 is an oil chamber 18 and surrounding the tubular member I5 'is an oil reservoir l9.

This reservoir I! may be filled by removing the filling plug 28 located near the upper end of the 55 section II.

The upper end of the ram It has threaded thereto a head. 2|. 1

The upper section l2 has threaded thereto a bearing 22 for the upper end of the ram l8.

For certain types of work the head 2| may be secured directly to the upper-end of ram 16, as shown in Fig. 5 of the drawings.

The outer surface of the section [2 is cylindrical and a cup-shaped casing 23 is fitted over the cylindrical surface of section l2,so that it may move vertically thereon.

This casing 23 has a vertical groove 24 in its inner face into which extends a key 25 projecting from the section I2 and preventing any' rotation of said casing on the standard.

A hole 26 is provided extending through the casing 23 for the relief of the tool when machining the key way 24. The downward movement of A'member 21 at the lower end of said casing limits the upward movement thereof when it comes into contact with said key 25.

The upperend of the casing 23 is closed with its top surface rounded over and provided with a diametrical groove 28.

Preferably the groove 28 is formed by two parallel elongated ribs 29 extending upwardly from the top of casing and separated from each other.

The top faces of these ribs 29 are fiat and capable of supporting a load.-

The lower section I I of standard has an ear 38 projecting from oneside thereof and this ear is provided with a pivot pin 3| mounted in ears 32 of a lever socket 33.

The lever socket is movable about the axis of pin 38 by means of the handle 34.

The lever socket 33 has downwardly'extending ears 35 in which is mounted pin 36 extending through a slot 31 in the upper end of a plunger 38 of an oil pump 39, the housing for which is formed integral with the lower section II of the standard.

The groove 28 in the casing 23 is disposed at an angle of 45 to the axis of the lever socket 33 and handle 34.

From the bottom of the casing 23 extendsupwardly a wide slot 48 straddling the lever socket 33 and the housing of the oil pump 38.

The lower end of the casing 23 is provided with a lifting foot 4| which extends outwardly from said casing directly opposite to the lever socket 33;

From the chamber I8 extends an oil passage 42, the outer end of which is adapted to be closed by a valve 43.

When the valve 43 is open oil from chamber l8 may flow through passage 42 and the side passage into the compartment Q and from this compartment through passage 46 into the oil reservoir I9.

The passage 42 is also connected to compartment 45 by means of branch passage '41.

Suitable valve memberscontrol the flow of oil through the passages 66, 41 but as this particular valve mechanism forms no part of the present invention it is deemed unnecessary to illustrate the same.

It is 'sufiicient to state that when the plunger 38 is moved downwardly oil will be permitted to flow into compartment $5 from which it will be forced through passages s1, 62 into chamber i8 and raise the ram it.

The ram it may be lowered by opening the valve 53 and permitting oil in chamber 68 to return to reservoir It.

By removing the casing 23 from the standard H, H, the jack may be used to lift a load on the head 2i.

When the casing 23 is placed on the head 2!! of the ram 16, the jack may be used in many ways that an ordinary jack could not be used as it is capable of raising a load set near the ground or it may be utilized in pushing a load.

For instance, in the inspection of railway tracks it is often found that two rails of a track are out of alinement and it is quite essential that they be properly alined.

This can be readily accomplished by the jack such as is herein shown and described by placing the jack on its side witheither the head or base of a rail disposed in the groove 28 and then operating the pump sufficiently to aline the rail properly.

It is for this particular work that the groove 28 is disposed at'an angle of about 45 to the axis of the handle 34 for the head or base of the rail is horizontal and when the jack is used in the manner just described, the handle 36 will be inclined upwardly at about an angle of 45 making it easier for the operator to actuate said handle. 1

The base I0 is round as indicated in Figs. 2 and 3 of 'the drawings and this permits the jack to take a good seat in the road ballast when performing the rail alining operation.

Moreover, the foot lift 4| at the lower end of the casing 23 is near enough to the base ll] so that it may be disposed beneath a rail to lift the rail a required distance to level the same.

While primarily the jack is designed for the leveling andalining of the rails of railroad tracks, it is obvious that the said jack may be used for a variety of other purposes.

It will be noted that the casing has a support on the standard for the full rise of the jack and positive stop means is provided to prevent the casing being raised beyond the limit mark.

By having the groove 28 at an angle of 45 when the jack is placed on its side while alining the rail, the liquid in the jack will cover the valves of the pump mechanism 39 at all times.

It will also be noted that when the jack is so used the valve member 43 will be in a convenient position to be opened when it is desired to per-' mit the lowering of the rain.

The

projections

29, 29 on the top of the jack of the casing, the upper faces of these projections being made flat for this purpose.

Constructed as shown and described in the present application there is little tendency for the ram to bend, as all such tendency to bend is lindrical standard having formed in its lower end a housing for a pump; a vertically movable ram in said standard; a pump plunger in said housing for forcing liquid beneath said ram; a

radial lever pivoted to a side wall of said standard and adapted to actuate said pump plunger; a casing slidably mounted upon the upper end of said standard and resting on said ram; means tween said casing, and standard for preventing rotation and limiting end movement of said casing relatively to said standard; and a lifting foot extending outwardly from the lower portion of said casing.

2. A lifting jack as set forth in claim 1 in which the upper end of said casing is rounded and provided with a 'diametrical fiat bottom groove disposed at an angle of 45 to the radial plane of actuation of the pump lever.

3. A lifting jack as set forth in claim 1 in which the upper end of the casing is provided with two parallel flat-sided projections diametrically disposed thereon at an angle of 45 to the radial plane of actuation of the pump lever and extending upwardly therefrom with a continuous flat surface between said projections.

4. A lifting jack set forth in claim 1 in which the upper end of the casing is provided with two parallel flat-sided projections diametrically disposed thereon at an angle of 45 to the radial plane of actuation of the pump lever and extending upwardly therefrom with a continuous flat surface between said projections, the upper ends of said projections being flat and elongated.

5. A lifting jack as set forth in claim 1 in which the standard comprises a body portion having superimposed thereon an elongated cylindrical member of greater diameter and accurately fitting the interior of and forming a bearing for said casing.

6. A lifting jack as set forth in claim 1 in which the standard is made in two alined .sections of which the upper sectionis elongated and cylindrical and accurately fitted to the interior wall of the casing, said upper section being superimposed on the lower section; and a tubular member threaded at opposite ends to said sections and preventing the separation thereof, said tubular member being surrounded by an oil reservoir.

7. A lifting jack as set forth in claim I in which the standard is made in two alined sections of which the upper section is an elongated cylinder accurately fitted to the interior wall of the casing, said upper section being superimposed on the lower section; and a tubular member threaded at opposite ends to said sections and preventing the separation thereof, said tubular member being adapted to enclose said ram.

8. A lifting jack as set forth in claim 1 in per threaded at opposite ends to said sections 3 mm w mmm mm m m w 1mm mum mmmm mm m m W m mmmw w