US1724133A - Journal-box jack - Google Patents

Description

Aug. 13, 1929. I. VON K. HOTT JOURNAL BOX JACK Filed March 13 1326 IN VENTOR A TTORNE y Patented Aug. 13, 1929.

UNITED STATES 1,7Za,l33 PA ENT OFFICE.

min-um! ION VON KERT. I-IO'IT, OF DAYTON, OHIO, ASSTGNOR TO THE JQYCE-CBIIDLAND COM- PANY, OF DAYTON, OHIO, A CORPORATION 016' OHIO.

JOURNAL-BOX JACK.

Application filed March 13, 1926. Serial No. 94,397.

This invention relates to journal box jacks of that type in which the jack is sup ported on the car journal and is in the nature of an improvement on the jack shown 5 in Patent No. 1,369,432, granted February.

22, 1921 to Hope.

One object of the invention is to provide a jack of this type in which the supporting device will rest directly upon the top of 10 the journal and will be held against lateral displacement.

A further object of the invention is to provide a jack of this type in which the supporting device will be formed separately from the main frame and detachably secured thereto, but in which the frame will normally be held against pivotal movement with relation to the supporting device.

A further object of the invention is to provide in a jack ofthis type a lifting element having a work engaging member designed to cooperate with journal boxes of different types.

Other objects of the invention will appear as the device is described in detail.

In the accompanying drawings Fig. 1 is a side elevation of a ack embodying my in.- vention, showing the same applied to a journal box of one type; Fig. 2 is a similar view showing the jack applied to the journal box of another type; Fig. 3 is a rear elevation of the supporting device; Fig. 4 is a side elevation of the supporting device; and Fig. 5 is a section taken through the supporting device on the line 5-5 of Fig. 3.

In these drawings I have illustrated one embodiment of my invention but it will be understood that. this embodiment has been chosen for the purpose of illustration only and that the mechanism may take various forms without departing from the spirit of the invention.

As here illustrated the jack comprises a main frame adapted to be supported on the end of a journal and having a lifting element to engage the bottom of the journal box and lift the same with relation to the journal. Preferably the main frame 10 is curved or substantially C-shaped in form and has secured theretoa supporting device adapted to engage the end of the journal, which is shown in dotted lines at 11. This supporting device comprises a body portion 12 having a transverse socket 13 to receive a head 14 on the upper end of the main frame.

The upper portion of the frame tapers toward its end and the end portion is en larged slightly to form the head, which is here shown as substantially circular in cross section. The socket 13 has a slot in its outer side of a width somewhat less than the diameter of the socket and substantially equal to the thickness of the neck of the frame, that is, the reduced portion of the frame lying just outside of the head. The body portion has an outwardly extending projection 15 which engages the neck of the frame and holds the latter against pivotal movement with relation to the suporting device when the jack is subjected to a load. The supporting member also has a rear-wardly extending flange 16 adapted to rest on the top of the flange at the outer end of the journal 11, this flange being curved to con form it substantially to the curvature of the journal. flange. The body portion of the supporting device is also provided with parts to engage the sides of the, journal and hold the device against displacement with relation thereto and these parts are here shown in the form of arms 17 extending inwardly across the flange at the outer end of the journal and they are preferably provided at their inner ends with lugs 18 to en gage the inner face of the flange on the journal and thus hold the supporting device against outward movement with relation thereto as well as against lateral displacement. These arms are normally immovable with relation to the body portion of the supporting device but they may be adjusted one toward the other to accommodate them to journals of different diameters. As here shown, the body portion of the device has at each end thereof a bearing 19, the two bearings being spaced apart. Each arm 17 has rigidly secured thereto, and preferably formed integral therewith, alaterally extending stem 20, which stems are slidably mounted in the bearings 19 and have their inner ends screw threaded, as shown at 21. The inner threaded portions of the stems extend beyond the inner ends of the bearings and have mounted thereon adjusting nuts causing the two arms to be adjusted simultaneously and to the same extent. Preferably the nuts are provided with knurled surfaces to facilitate their operation. In order to hold the arms rigidly against pivotal movement with relation to the body portion of the supporting device the stems 20 are noircircular in cross section and the openings in the bearings 19 ofthe body port'ion are also non-circular. In the present instance, the stems are hexagonal in shape and the depth of the threads thereon are such that this non-circular shape will not interfere with the operation of the nuts. Thearms may engage the sides of the journal at any desired points but they are so adjusted that they are not subjected to the weight of the load on the ack but this load is carried wholly by the flange 16 which rests upon the top of the journal.

The mainframe 10 has mounted in its lower portion a liftingscrew 25 and is provided withsuitable mechanism for actuating that screw. This actuating mechanism is not shown indetail as it forms no part of the present invention but the operating lever thereforfis shown at 26. ;Mounted on the upper end of the lifting element 25 is a work engaging member 27 having at one side thereof 'an approximately flat serrated surface 28 to adapt it toengagement with the relatively flat lower side of a cast iron journal box, asshown at 29 in Fig. 1. 'The other s de of the work engagmg member provided with a transverse groove, as shown at 30, ,toaccommodate it to the transverse reinforcing rib on the bottom of a pressed steel jour nal box, as shown at 31 in Fig. 2. "The workengaging member also has "an intermediaate portion of greater height than the two lateral portions, as shown at 32, and this higher portion is also serrated or provided with teeth. -When the portion 28 0f the work engaging member is applied to the fiat lowe r surfaceof a journal box the higher portion 32 thereof will engage the lower surface of the box at the point where it begins to curve upwardly, 'thusproviding a very firm contact bet-ween the workengagingelementand the journal box. When the part- 30 of the work engaging member is brought into engagement with the reinforcing rib on a pressed steel box the higher toothed portion 32 thereof will engage'the box just infront of the transverse rib and hold the work engaging member against pivotal movement on the rib. The lwork engaging member may be movably mounted onthe. lifting element to enable either portion thereof to be brought into operativeengagenient with the journal box and, as here shown, the work engaging member is provided with a circular recess in the bottom thereof to receive the upper end of the lifting element and is retained on the lifting element by a pin mounted in the wall of the recess and extending into a circun'ifcrential groove S t in the upper end of the lifting element, thus lirmly retaining the work engaging member on the lifting element but permitting of its free rotation thereon.

lVhile I have shown and described one embodiment of my invention I do not desire to be limited to the details thereof as various modilications may occur to a person skilled in the art.

' Having now fully described my invention, what I claim as no i and desire to secure by Letters Patent, is:

1. In a journal box jack, a main frame, a supporting devic for said main frame l1aving a part to engage the top of a car journal at the outer end thereof and having parts spaced below the first mentioned part to engage said journal to hold said device against displacement, a lifting clement carried by said frame and arranged to engage the journal box, and means to actuate said lifting element.

2. In a journal box jack, a main frame, a supporting device for said frame comprising a l)()( y portion having an integral flange to engage the top of a car journal at the outer end thereof and having parts spaced below the first mentioned part to engage the sides of said journal to hold said device against lateral displacen'ient, a lifting element carried by said frame and arranged to engage the journal box, and means to actuate said lifting element.

3. In a journal box j ack, a main frame, a supporting device for said frame comprising a body portion having a part to engage the top of a car journal at the outer end thereof, arms to engage the sides of said journal and hold the same against displacement, said arms being adjustable to accommodate them to journals of diii'crent diameters, a lifting element carried by said frame and arranged to engage the journal box, and means to actuate said lifting element.

4:- In a journal box jack, a main frame, a supporting device carried by said frame and comprising a body portion having a part to engage the top of a flange at the outer end of a car journal. and arms arranged below said part and extending across said flange at the sides of said journal and having lugs to ongage the inner face of said flange,a lifting element carried by said frame and arranged to engage the journal box, and means for actuating said lifting element.

5. In a journal box jack, :1 main frame, a supporting device carried by said frame and comprising a. body portion having a part to engage the top of a flange at the outer end of a car journal, arms extending across said flange at the sides of said journal. and having lugs to engage the inner face of said flange, said arms being adjustable one to- Ward the other but being held normally against all movement With relation to said body portion, a lifting device carried by said frame and arranged to engage the journal box, and means for actuating said lifting element.

6. In a journal box jack, a curved main frame having a head at its upper end, a supporting device for said frame con'iprising a body having a transverse socket to receive said head and having a part to engage said frame at the outer side of said head to hold the frame against pivotal movement with relation to said supporting device, said body portion also having a part to engage the top of a car journal at the outer end thereof to support said frame on said journal, a lifting element carried by said frame and arranged to engage the journal box, and means to actuate said lifting element.

7. In a journal box jack, a main frame, a

supporting device formed separate from said main frame, rigidly connected therewith and having a part to engage the top of a car journal at the outer end thereof and also having parts arranged below the first mentioned part to engage the sides of said journal to hold said device against displacement, a lifting element carried by said frame and arranged to engage the journal box, and means for actuating said lifting element.

8. In a journal box jack, a main frame, a device connected with said main frame to support the same on the end of a car journal, a lifting element carried by said frame and comprising a rotatable Work engaging member having at one side thereof an approximately flat serrated portion, having at the other side thereof a transverse groove, and having an intermediate serrated portion extending above the first mentioned portions, and means for actuating said lifting element.

In testimony whereof, I affix my signature hereto.

ION VON KERT HOTT.

Images