US1200760A - Lifting-jack. - Google Patents

Description

E. REYNOLDS.

LIFTING JACK.

APPLICATION man NOV. 25, 1915.

1 09,760. 4 Patented Oct. 10, 1916.

2 SHEETS-SHEET l.

jg. l, 9

attain;

n4: mmms PETERS 00., PNOI'U-LITNQ. wAsHm-cmu. o. c.

ELREY NOLD S. LIFTING JACK. APPLICATION FILED NOV.- 26; 1915- 1 {200,760, Patented Oct. 10, 1916.

2 SHEETS-SHEET 2.

n1: nnamr '11!!! m. momma. Wnmnnmu, a. c,

EDDIE REYNOLDS, OF GREENWOOD, SOUTH CAROLINA.

LIFTING-JACK.

Specification of Letters Patent.

Patented Oct. 10, 1916.

Application filed November 26, 1915. Serial No. 63,611.

To all whom it may concern:

Be it known that I, EDDIE REYNOLDS, a citizen of the United States, residing at Greenwood, in the county of Greenwood and State of South Carolina, have invented new and useful Improvements in Lifting- Jacks, of which the following is a specifics tion. i

My invention relates to lifting jacks and has particular application to a jack adapted to raise journal boxes to permit the removal or substitution of brasses.

The primary object of my invention is to provide a device of this character which will positively hold the wheel and axle in normal position, while the journal box is being raised.

Another object of my invention is toprovide a jack which is durable and efficient and which is so constructed as to permit the holding means for the wheel to be adjusted with respect to the jack to eifectively engage the rim of the wheel.

With the above and other objects in view, the invention consists in the construction, combination and arangement of parts hereinafter set forth in and falling within the scope of the claims.

In the drawings; Figure 1 is a side elevation of the device. Fig. 2 is a vertical section of the same. Fig. 3 is a detail view of the locking means for the rack bar andthe means for operating the same. Fig. 4 is a detail view of the operating lever and means for locking the same upon the shaft. Fig. 5 is an end view of the lever showing the shank of the locking pawl in section;

Referring now to thedrawings in detail, 1 designates a standard which is formed of any suitable material, such as metal or the like, and is preferably rectangular in configuration. This standard is formed with a ledge or dividing partition 2 which separates the interior of the standard into two compartments 3 and 4: respectively. Mounted in the upper compartment 2' and extending through the top wall of the standard is a threaded shaft 5 which has secured to its lower extremity a bevel gear 6, the latter being provided with a stud 7 on its under side which extends into an opening 8 formed in the partition 2. The upper end of the shaft 5 is adapted to threadedly receive a ram 9 which is preferably rectangular in form so as to conform to the rectangular opening 10 formed in the upper has one side thereof open as at 12 and which is closed by a plate 13, the same being secured to the standard by means of the bolts 14:. Extending transversely through the plate and centrally thereof is a shaft 15 which has its inner extremity provided with a bevel gear 16, such gear being disposed above the gear 6 and meshing with the same. Mounted upon the outer extremity of the shaft 15 is the bifurcated extremity 17 of a lever 18. Rigidly mounted upon the outer extremity of the shaft 15 and disposed between the parallel arms of the bifurcated extremity is a gear 19. The lever 18 is provided with a longitudinally extending bore 19 which receives the shank 20 of a locking pawl 21. Mounted within the bore and encircling the shank of the pawl is a coiled spring 22 which has one end thereof engaging a shoulder 23 formed in the outer extremity of the bore. This spring normally tends to force the pawl into engagementwith the teeth of the gear 19. In the vicinity of the outer extremity of the shank 20 is a pin 24: which extends transversely through the shank and is adapted to lie in diametrically arranged slots 25 formed in the outer end of the lever 18. From this construction, it will be seen that by gripping the outer extremity of the shank 20 by the handle 26 formed thereon and moving the shank outwardly against the tension of the coiled spring 22, the pawl will be dis engaged from the gear 19. While holding the pawl in this position, the shank is .turned so as to cause the opposite end of the 'pin 24 to engage the outer surface of the lever whereby the pawl will be supported in inactive position to permit the lever to be oscillated as will be hereinafter described.

Mounted upon the lower edge of the plate 13 are a pair of eyes 27 in which are mounted the upper extermities of a pair of depending rods 28, the opposite ends of the rods extending through eyes 29 and threaded to receive nuts 30. The lower extremities of each of the rods 28 receive large washers '31 which are arranged between the lower set of eyes 29 and the nuts 30. From this construction, it will be seen that upon locking the nuts upon the rods, the latter will-bedrawn downwardly through the eyes,

thereby causing the plate 13 to be held in rigid position upon the standard and furthermore, to cause the bevel gear 16 to properly engage the adjacent gear. Another advantage of this construction, is the fact that when it is desired to remove the plate for lubricating the interior of the standard or the bevel gears, the plate will still be connected to the standard by means of the rods, thus preventing the loss in accidental removal of the same.

Extending transversely through the standard at the rear wall of the lower compartment 3 is a atchet bar 32 which has one end thereof provided with a foot 33 and a toe 34;, the under side of the toe being serrated to provide suflicient gripping surface when brought into contact with the wheel.

Mounted within the lower compartment and lying parallel to the rack bar is a supporting rod which has the upper end thereof mounted within the walls of the standard. Pivotally mounted upon the rod 35- at its medial portion is a spring-pressed locking pin 36, a spring 37 being secured to the rear wall of the compartment and engaging the lower extremity of the locking pin,the upper extremity of the pin terminating in a tooth 38 which is adapted to engage the teeth of the rack bar 32 and serves to lock the same against longitudinal movement within the standard.

39 designates a closure which is secured to the standard and adapted to close the lower compartment 3, the plate being provided with a central opening 40 in the walls of which is pivotally mounted a lever 41 which has the opposite extremities disposed at opposite sides of the plate. The inner extremity is disposed adjacent to the lower end of the locking pin 36 whereby upon the movement in the rocking of the lever, the opposite end of the locking pin will be moved against the tension of the spring, thereby releasing the ratchet bar from the influence of the pin.

In practice, the jack is placed beneath the journal box so as to dispose the ratchet bar at right angles to the car wheel, the toe of the rack bar engaging the rim thereof. By providing the rack bar with the positive locking means and at the same time being capable of being adjusted longitudinally,

ing movement of the bevel gears 6 and 16 whereby the shaft 5 will be caused to rotate causing the upward movement of the ram. The ram being disposed below the journal box, it will engage and lift the same so as to permit the removal of the brasses in case they have become worn or broken, the foot 33 engaging the rim of the wheel and preventing any upward movement of the wheel or axle. If the jack is in a position as to prevent the complete rotation of the lever, it may be oscillated by completing the stroke of the lever in one direction and then releasing the small gear from the influence of the pawl by twisting the latter and then allowing it to reen-gage the gear whereby the shaft will then move with the lever.

From the foregoing description taken in connection with the accompanying drawings, it is thought that the construction and operation of the device will be apparent to those skilled in the art and further description and minor changes in detail size and proportion for construction may be made without departing from the spirit of the appended claims.

I claim:

1. A lifting jack comprising a standard, superposed compartments formed in said standard, a vertically disposed threaded shaft rotatably mounted in the upper compartment and extending through the upper wall of the standard, a ram threadedly mounted on the upper end of said shaft, means mounted exteriorly of the standard for rotating said shaft to elevate said ram, a ratchet bar extending through the lower compartment and slidably mounted within the same, said bar being disposed at right angles to the said ram, and means mounted within the lower compartment for locking said bar against movement.

2. A lifting jack comprising a standard a rack bar extending transversely through said standard and movable longitudinally within the same, said bar having a foot formed on one extremity thereof, a spring pressed locking pin pivotally mounted within said standard and adapted to engage said bar, and an operating lever pivotally mounted on said standard and adapted to engage said locking pin whereby upon actuation of the former the pin will be disengaged from the bar.

In testimony whereof I aflix my signature in presence of two witnesses.

EDDIE REYNOLDS.

Vitnesses:

W. H. YELDELL, Jr., W. T. VERELE.

Copies of this patent may be obtained for five cents each, by addressing the Commiss oner 01 22 1011178,

Washington, D. G.

Images