US882991A - Lifting-jack. - Google Patents

Description

PATENTED M-R. 24, 1908.

E. H-vZ. BERGE. LIPTING JACK.

y APPLICATION FILED 00T. 4,1907.

from/frs co4, wAsmNarcN, u4 c UNITED STATES PATENT OFFICE.

EMIL HERMAN ZUM BERGE, OF DALLAS, TEXAS.

LIFTING-J ACK.

To all whom it may concern:

Be it known that I, EMIL HERMAN ZUM BERGE, a citizen of the United States, and a resident of Dallas, in the county of Dallas and State of Texas, have invented a new and Improved Lifting-Jack, of which the following is a full, clear, and exact description.

This invention relates to lifting jacks and is particularly useful for lifting car trucks to permit the removal of journal bearings.

A11 object of the invention is to provide a simple, strong and efficient lifting jack, by means of which the journal of a car truck can be easily and rapidly lifted while the wheel remains upon the track, to permit the removal of the brasses, and which can be operated expeditiously and with the application of little power.

A further object of the invention is to provide a device of the class described, in the use of which the car wheel is employed as a support, and which operates in such a manner that the journal is raised while the car wheel remains upon the track rail, a cam member having means for its manual operation serving to elevate the journal by engaging the journal box. i

The invention consists in the construction and combination of parts to be more fully described hereinafter and particularly set forth in the claims.

Reference is to be had to the accompany- -ing drawings forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views, and in which Figure 1 is a side elevation of one end of a car-truck showing my device applied thereto; Fig. 2 is an end view of the car-truck showing parts `in cross-section Fig. 3 is a view similar to Fig. 2 showing parts in different positions Fig. 4 is a plan view of a detail.; and Fig. 5 is an elevation of a detail of modified form.

Before proceeding to a more detailed explanation of my invention, it should be under stood that the same can be used for a variety of purposes to which lifting jacks are usually put, though it is particularly useful in lifting the journal or axle boxes of railway cars, when it is desired to remove or replace the brasses thereof.

It has been found in practice, that in elevating car trucks for the purposes mentioned above, the raising of the journal box often causes the wheel adjacent to the journal box Specification of Letters Patent.

Application filed October 4, 1907.

Patented March 24, 1908.

Serial No. 395,856.

to move upwardly, unless it is blocked to prevent this movement. The upward movement of the wheel will cause the car to tilt toward the side opposite that upon which the ournal box is disposed, unless the wheel is suitably blocked to hold it against such movement. It is inconvenient and a source of loss of time and labor, properly to block the wheel, and my invention is particularly useful as it prevents the rising of the wheel, as the latter is used for a support, and in the operation of the lifting jack is therefore subject to a downward pull.

Referring more particularly to the drawings, 1 represents a car truck of conventional design, one end only of which is shown in the illustration. The truck carries a journal box 2 which is provided with the usual brass 3 which rests upon the journal 4 of the wheel 5. It will be understood that the weight carried by each journal is supported by the same through the brass of the journal box, the brass resting upon the upper surface of the journal as is shown most clearly in Fig. .1. Consequently, when the brass is to be removed, itis necessary to raise the journal box from the journal to permit the brass which is jammed between the two, to be withdrawn. I provide a hook or support 6, formed from suitable material such as iron or steel, and having at one end a hook portion 7 adapted to extend over the flange 8 of the wheel and to engage at the under side of the wheel rim, the shank of the hook extending outwardl beyond the wheel and being provided wit notches 9. A yoke bar 10 is removably located in one of the notches 9, and at the end has transverse sleeves 1 1 in which are mounted depending hanger rods 12. The upper ends of the hanger rods are threaded and extend upwardly beyond the sleeves 11, being held in position by means of nuts 13. At the lower ends of the hanger rods are formed eyes or bearings 14 which carry a rotatable, transverse shaft 15.

Rigidly mounted upon the shaft 15 is a cam member 16, preferably cylindrical in form and arranged eccentrically with respect to the shaft. The cam member, which, together with the shaft is rotatable, has formed therein peripheral openings 17, adapted to receive the end of a hand bar 18, by means of which the rotatable member can beoperated. At one end, the cam member is provided with a ratchet 19. A shoe 20, having the under side curved so that the shoe seats evenly upon the cam member, is removably mounted between the same and the bottom of the journal box when my device is in operation. Near the forward end, the shoe 20has an upward projection 21 arranged to engage at the front of the journal box, while at the rear are laterally disposed toes 22, which extend behind the truck bolts 23 and serve thereby to hold the shoein position. Toes 24 extending laterally near the front of the shoe 20 serve a similar purpose. At one side, the shoe 20 has a pivotally mounted dog 25, which is arranged to engage with the teeth of the ratchet 19 and thus prevent the movement of the rotatable member in one direction.

In using my lifting jack, the supporting member 6 is placed in position as described above, and the yoke bar 10 on the supporting member in one of the notches 9. The rotatable member is located underneath the journal box and carries the shoe which ngages at the under side of the journal Before operating the device the parts can be suitably adjusted by means of the nuts on the hanger rods. The eccentric member is then rotated by means of the hand bar 18, and as it revolves the throw of the eccentric forces the shoe upward and this carries with i-t the journal box, thereby raising the latter above the journal and freeing the brasses so that the latter can be easily removed. It will be understood that as the rotatable member is operated, the hand bar can be removed from one of the openings 17 and placed in another, as is most 'convenient to the operation. The dog 25 holds the cam against a reverse movement when the hand bar is released. When it is desired to lower the journal, it is merely necessary to withdraw the dog and the weight supported by the shoe will return the device to its original position.

In Fig. 5 is shown a hook or support 6 of modified form. In this modification the support is extended in a substantially horizontal direction beyond its engagement with the car wheel 5 and at the end has a pivotally mounted hook oa which carries the yoke bar lO. Vith this form of the device the same is applicable to car trucks of different types and car wheels of different sizes.

Having thus described my invention, I claim as new and desire to secure by Letters Patent 1. In a device of the class described, in combination, a support adapted to engage a car wheel and carrying a hanger, a member mounted upon said hanger, and rotatable about a substantially horizontal axis elevating means controlled by said member and adapted operatively to engage a ournal box and means for preventing the movement of said member in one direction.

combination, a support adapted to engage a car wheel and carrying a hanger, a rotatable member mounted upon said hanger and having a cam, and means for operating said meniber to rotate said cam, said cam being arranged operatively to engage a ournal box, said member being rotatable about an axis substantially at right angles to the direction of the movement of the journal box effected by said cam.

4. In a device of thel class described, in`

combination, a support adapted to engage a car wheel and carrying an adjustable hanger, a rotatable member mounted upon said hanger and having a cam adapted operatively to control a journal box, means for manually operating said rotatable member, and means for preventing the movement of said member in one direction, said member being rotatable about a substantially horizontal axis.

5. In a device of the class described, in combination, a support adapted to engage a car wheel and carrying a removable hanger, said hanger being adjustable, a rotatable member mounted u on said hanger and ada ted to be manually operated, said rotatablle member including a cam, a shoe removably arranged upon said Lcam and adapted to engage a journal box, and means for preventing the movement of said member in one direction.

6. In a device of the class described, in combination, a support adapted to engage a car wheel and removably carrying a hanger, said hanger being adjustable, a rotatable member mounted upon said hanger and having means for its manual operation, said rotatable member.` having a cam, a shoe removably mounted upon said cam and adapted to engage at the under side of a journal box, and means carried by said cam for preventing the movement of said member in one direction. f

7. In a xdevice of the class described, in combination, a support adapted to engage at the rim of a car wheel and extending beyond the wheel at the opposite side, a hanger comprising a yoke adapted to be removably held by said support and provided with adjustable hanger bars, a shaft movably carried by said hanger bars and having rigid therewith a cam, said cam having means for its manual In testimony whereof I have signed my y operation, a shoe adapted to be removably naine to this specification in the presence of 10 ((zarriecell byfsaicl @am angl to engcrgl at the nntWo subscribing Witnesses.

er s1 e o a Journa 0X, sai s oe .aving w projections serving to hold it in position, a EMIL HERMAN ZUM BERGE' ratchet rigid With said cam, and a dog carried Vitnesses: by said shoe and adapted operatively to en- GEO. BRUNDRITT, gage said ratchet. E. L. FISHER.

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