US1338589A - Lifting-jack - Google Patents

Description

F. L. RAPSON.

LIFTING JACK.

APPLICATION FILED JULY 10.1918.

1,338,589. P ente Apr- 27, 1920.

6 SHEETS-SHEET I.

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F. L. RAPSON.

LlFTING JACK.

APPLICATION FILED JULY l0, 19l8. 1,338,589. atented Apr. 27, 1920.

6 SHEETS-SHEET 2.

Fig? 3.

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F. L. RAPSON.

LIFTING JACK. v

APPLICATION FILED JULY 10.1918.

1,338,589. Patented Apr. 27, 1920.

6 SHEETS-SHEET 4- F. L. RAPSON.

LIFTING JACK.

APPLICATION FII ED JULY 10,1918.

1,338,589, Patented Apr. 27, 1920.

6 SHEETS-SHEET 5.

F. L. RAPSON.

LIFTING JACK.

APPLICATION FlLED JULY 10,1918.

1,338,589. e ted Apr- 27, 1920.

6 SHEETS-SHEET b'.

Fig 9.

UNITED STATES PATENT OFFICE.

FRED LIONEL RAPSON, OF LIVERPOOL, ENGLAND.

LIFTING-JACK.

To all whom it may concern Be it known that I, FREDERICK LIonnL RAPsoN, a subject of His Majesty the King of England, and resident of Liverpool, in

the county of Lancaster, Kingdom of England, have invented certain new and useful Improvements in or Relating to Lifting- Jacks, of which the following is a specification. i I

This invention relates to lifting jacks and the like for use on motor road and other I vehicles.

I vide a jack which isadapted to be permanently or detachably secured to the. axles of a vehicle adjacent to each wheel thereof. A further object is to provide a lifting jack which can be fitted vertically to the axles without interfering with the spring clearance and also to provide a telescopic iack with anti-friction screw gearing in w ii ch the friction will be reduced to the minimum to insure very easy operation.

A further object is to provide a jack which may be operated by a brace handle.

A still further object is to provide a jack of the above type with means whereby it may be detachably secured or'hooked on to the axle.

With these and other objects in view the invention consists in providing a jack' adapted to be permanently or detachably secured to the axle or other part of the vehicle wherein a plurality of members are moved telescopically and simultaneously by the operation of a bevel wheel rotated by hand or other suitable means, the said members being connected to each other by antifriction nut and screw gearin The invention will nowbe escribed with reference to the accompanying drawings in which:-

Figure 1 is a sectional elevation of one form of jack constructed according to the invention and in its closed or inoperative position;

Fi 2 is a sectional plan thereof taken on the line A-A of Fig. 1;

Fig. 3 is a sectional elevation thereof showing the jack in its operative position;

Fig. 4 is a similar view to Fig. 3 of a modified construction; I

Fig. 5 is a sectional elevation of the jack shown in Fig. 4 o erated from the footboard or the side 0 the car;

Specification of Letters Patent.

' Patented Apr. 27, 1920.

Application filed July 10, .1918. Serial No. 244,808.

motor car showing a pair of jacks connected by swivel connections to the axle, one; jack in its operative, position and the other jack in its inoperat1ve position, the operative position of the latter being shown in dotted lines; I

Fig. .8 is a perspective view'showing a molified form of attachment for the jack, an

Fig. 9 is a perspective view of a hook or attachment for the jack.

As shown more particularly in Figs. 1 to 3 the lifting jack comprises a substantially cylindrical casing 1 which is adapted to be secured to the axle 2 of the vehicle preferably adjacent to each wheel 3. Within the casing 1 is slidably and rotatably mounted a sleeve member 4 formed externally at its upper portion with a helical substantially semicircular groove 5. A nut or sleeve 6 formed with a similar cooperating groove 7 is secured in the casing 1 and within the grooves 7 and 5 in the nut and the sleeve member is provided a number of anti-friction rollers, balls or the like 8 to form the screw thread which is preferably right handed. The outer ends of the groove 7 in the nut or sleeve 6 which latter may be formed integrally with the casing 1, are connected by a through channel 9 to provide for the circulation of the balls 8. To the lower end of the slidable sleeve member 4 is secured or formed integrall thereon, a nut or sleeve 10 which is forme internally with a helical substantially semicircular groove or recess 11. Within the slidable and rotatable sleeve members 4 and 10 isslidably mounted a rod or the like 12 which is formed along its length with a helical substantially semicircular groove 13. A number of anti-friction balls or the like 14 are arranged in the cooperating grooves 11 and 13 in the nut 10 on the lower end of the sleeve member 4 and the slidable rod 12 which is hollow throughout and forms a second sleeve member, to form the screw thread which is preferably left handed. The outer ends of the ball race 11 in the said nut 10 are connected by a through channel 15 to provide for the circulation of the balls 14. The slidable and threaded rod 12 is formed with an enlarged base 16 to engage on the ground when the disposed transversely to the slidable rod 12 v and sleeve 4. This transverse shaft '21 is rotatably mounted in the side of a casing 22 which is adapted to slide with the rotatable and slidable sleeve 4. Suitable anti-friction ball bearings 23 and 24 are preferably provided betweenvthe casing 22 and the lower side of the bevel wheel 19 and between the casing 22 and a flange 25 formed on the sleeve 4. The outer end of the transverse shaft 21 is formed square as shown at 26 or of other convenient shape in section to enable a similar shaped box end of an operating handle to be placed thereon for operating the jack. If desired the shaft 21 may be provided with a box shaped end to receive the square or other shaped end of an operating handle which. latter is preferably made of brace shape. The transverse bevel wheel shaft 21 is also provided with a ratchet wheel 27 which is adapted to be engaged by a pawl 28 mounted on the casing 22 to prevent the sliding members 4 and 12 of the jack moving in an upward direction during their operation. The outer casing 1 is preferably extended downwardly as shown at 29 to receive the slidable casing 22 when in its normal and upward position and prevent the entry of dust and dirt. A suitable slot 30 is cut in the depending portion 29 of the main casing 1 to receive and guide the slidable casing 22 during its travel. A suitable annular washer or the like 31 may be provided on the upper side of the base or footstep 16 of the jack to engage against either or both of the casing and prevent the entry of dust'and dirt and also to prevent vibration.

The main casing 1 of each jack is prefer ably secured to the axle 2 adjacent to each wheel 3 by a pair of laterally extending lugs 32 engaging the top and bottom flanges of the said axle 2 and by a plate 33 at the 7 rear of the axle being secured b bolts, or the bolts could be passed vertical the said lugs to secure the .jac axle 6.

The jack is operated by placing the squared box shaped end-of a brace handle on the squared end 26 of the transverse shaft 21 and rotating the same. This rotation will turn the threaded sleeves 4 and cute 10 through the medium of the bevel wheels 20 and 19 and lower the said sleeve and also the screwed rod 12 and thus raise the axle 2 throu h.

and the adjacent wheel or wheels 3 from the ground so that repairs may be executed. The wheel maybe lowered preferably automatically by raising the pawl 28 out of engagement with the ratchet wheel 27 or by rotating the brace handle in the opposite direction as will be well understood.

In a modified form of lifting 'ack as shown in Fig. 4, the transverse s aft 21 fitted with the ratchet wheel 27 and bevel wheel 20 is adapted to rotate a rod 35 mounted in the upper end of the casing 1 through the medium of the bevel wheel 19 secured thereon. The casing 1 is secured to the axle 2 of the vehicle as previously described and similar reference numerals are used for corresponding parts. This rod 35 which is rotatably mounted at its upper end is formed externally with a helical substantially semicircular groove 36. A similar cooperating groove 37 is formed in the upper end of a flanged sleeve member 38 which is slidabl and rotatably mounted in the casing 1 an within the grooves 36 and 37 is disposed a number anti-friction rollers, balls or the like 39 which are returned and circulate through a channel 40 as previously described. The flanged sleeve member 38 is formed with an exterior helical groove or recess 41 for the reception of balls 42 disposed in a groove 43 in nut or sleeve 44 secured in the upper end of a base sleeve 45, a similar channel 46 being provided for the circulation of the balls 42. The sleeve 45 is formed with an enlarged base 16 to en age the ground and is fitted with an annu ar washer 31 'to abut against the lower' portion 29 of the casing 1 to exclude dirt and dust when the jack is in its inoperative position. The side of the sleeve member 45 is formed with grooves or serrations 47 tov cooperate with similar grooves or serrations 48 formed on the lower interior end of the depending portion 29of the casing 1 to prevent the rotation of the lower or base sleeve member 45. The upper ends of the sleeve members 38 and 45 are provided with ball bearings 49 to prevent the sleeves from amming or biting one against the other or-fixing tightly in the casing.

In operation the shaft 21 is rotated by the brace handle to rotate the rod 35 through the medium of the bevel wheels 20 and 19. This rotation will rotate and slide the sleeve 38 downwardly and also move the base sleeve 45 to engage the ground and thereby raise the adjacentwheel of the vehicle. The wheel can be lowered by moving the pawl 28 out of engagement with the ratchet wheel 27 and rotating the shaft 21 in the opposite direction. This rotation lower sleeve 45 will engage in the casing and move back to its initial position, the latter sleeve 45 being held against rotation by the cotiperating serrations 47 and 48.

If desired, the lifting jacks hereinbefore described may be operated from the side of the car as shown in Figs. 5 and 6. In this case the shaft 21 of each jack is provided with a rearwardly extending and longitudinal shaft 50 having a bevel wheel 51 thereon. The rear or inner end of each shaft 50 is carried in a bearing 52 which is supported by a bracket hung from the chassis of the vehicle adjacent to each wheel. The bearing 52 is preferably formed in one with another bearing 54 which is adapted to carry the inner end of a transversely dis osed shaft 55. On the inner end of this latter shaft 55 is secured a bevel wheel 56 which is adapted to permanentl engage with the bevel wheel 51 on the en of the longitudinal shaft 50. The outer end-of each transverse shaft 55 is supported by a bearing 57 disposed and carried under the runnin board 58 at the side of the car; the outer on of this shaft 55 is preferably rovided with a squared hole or othersuitab shaped end 59 for the reception of a detachable operating handle 60. The bearings for the shafts 50 and 55 carrying the bevel wheels 51 and 56 are preferably formed in a cylindrical or cup shaped casing 61 of aluminium or other suitable material. These casings 61 are adapted to contain grease or other lubricant and keep the working parts free from dirt and mud. The casing 61 is formed with a lug for attachement to the bracket 62 and the open end of the casing is closed by a suitable cover 63. The bearings carrying the shaft 21 and the longitudinal shaft 51') are preferably provided with self-alining ball races 6 1 to allow for the relative movement which occurs during normal running between the axle 2 and the frame of the car 1 or vehicle. If desired the casing 61 may be connected to the bracket 62 or the chassis frame by means of swivel connection.

In a further modified construction, the lifting jacks could be connected to the axle 2 by hinged or swivel connections as shown in Fig. 7. In the construction the casing 1 of each jack is provided with a rearwardly projecting lug or extension 65 which is rotatably mounted in a plate 66 preferably formed or provided with means to connect it to the axle 2 as hereinbefore described with reference to Fig. 1. To the casing 1 of the jack and above and below the projecting lug 65 thereon, about which the ack turns is provided spring pressed stops or plungers 67 which are adapted to engage in holes or recesses 68 provided in the plate 64 of the axle attachment device. Four of these holes or recesses 68 are provided one above and vent rattling during the running of the car.

In a further sli htly modified construction, as shown in *i 8, the swiveling devices may be arranged at right angles to the axles 2 of the vehicle so that the jacks can be turned up under or adjacent to the spring 70 on said axles 2. In this instance the attachment device comprises a plate 71 formed with a circular or disk like extension 72 having a swivel pin holeand the locking holes or recesses arranged thereon if so desired. This disk like extension 72 is adapted to be received between a pair of substantially similar extensions 73 provided on the upper end of the jack casing 1 and these extensions may be provided with spring pressed balls or plungers to engage in the holes or recesses in the attachment extension 72 to automatically lock the jack in its operative or inoperative position; The casing 1 of the ack may be formed with an extension 7 1 to engage under the axle 2 when the jack is placed in its vertical or operative position. The plate 71 of each axle attachment is adapted to be secured to the springs 7 0 by V shaped bolts 45 passing around the springs 70 or by other suitable means.

If desired, the upper end of the casing may be provided with hook devices such as described in my said co-pending applications so that the jack can bedetachably secured to the axle or to coiiperatin hook devices secured thereon as shown in Fig 9 The upper end of the casing 1 is formed with a lug 76 which is provided with a transverse pin 77. The extensions of the pin 77 are adapted to be placed in a pair of hook shape extensions 78 formed on Y a plate 79 secured to the springs 70 or to .the axle in any convenient manner.

Thus when a hook device is rovided adjacent to each wheel, only one lifting jack need be carried on the car, the jack being hooked on the device adjacent to the wheel it is desired to raise and hooked off and stored in any convenient place on the car when not required.

It will be understood that the telescopic members of thejack may be provided with other forms of anti-friction screw threads if so desired.

What I claim is 1. A jack comprising a casing, a sleeve member longitudinally movable 1n the casing, a second sleeve member longitudinally movable in the first sleeve member, a foot be provided to further hold the members, and a housing or the gearing carried by and movable members.

3. A jack comprising a casing, movable sleeve members'arranged w th one of said sleeve relatively within the casing, gearing for operating the sleeve\ members, and a housing for the gearin carried by and movable with one of sai sleeve members, said casing being formed to receive thehousing when the sleeve mem bers are at one hmit of movement.

4. In a ack, a casing formed to engage 'with a fixedpart of a vehicle; jack members operable within. the casing, ing means for said members, on the exterior of each .of said members, anti-friction balls in said grooves, and means to inclose and protect the gear means secured to and movable with one of said jack members.

5. In a jack, a casing havingavehicle engaging projection, relatively movable jackmembers normally ing in the casing, a guide on the casing fitting in one of said jack-members, anti-friction balls disposed in vertical and horizontal ositions'with reference to said casing and ack-members, and a foot carried by one of said members and closing the housin opening when the members are in norma or inoperative positions.

In testimony signed my name.

' FRED LIONEL RAPSON.-- .f

a gear operatspu'al grooves housed Within an open-' hereof I have hereunto.

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