US1710935A - Lifting jack - Google Patents

Description

April 30, 1929.

w. w. MATTHES 1,710,935

LIFTING JACK Filed Dec. 20, 1926 It INVENTOR v M41 TM 14! 1mm ATTORNEY Patented Apr. 30, 1929.

UNITED STATES WALTER W. MATTHES, F WELLINGTON, "WASHINGTON.

LIFTING JACK.

Application filed December 20, 1926. Serial No. 155,938.

This invention relates to improvements in lifting jacks, and particularly to jacks ofthat character designed especially for removing and replacing the brasses in the journal boxes of freight, passenger or other railway cars; it being the principal object of this invention to provide a re-brassing jack that may be used for this purpose without requiring any special blocking as a foundation for supporting 1c the jack in use.

More specifically stated, the invention resides in the provision of a aclr for the above purpose having its housing, or base portion, provided with a lateral shoulder adapted for supporting contact upon the rim formed about the periphery of the car wheel in close proximity to the tread.

A further object of the invention is to provide the jack with means adapted to be extended into contact, or abutment, with the rail on which the car wheel rests, so as to serve as a means for preventing movement of the journal box outwardly along the axle when lifting pressure is exerted by the jack against it.

A still further object of, the invention is to provide the jack head with means for retaining it against slipping and properly inholding contact witli the journal box during use.

Other objects of the invention reside in the various details of construction and conibination of parts whereby a substantial and efiicient jaclr will be provided at a relatively small cost.

In accomplishing these and other objects of the invention, I have provided the improved details of construction the preferred :lorms of which are illustrated in the accompanying drawings, wherein- Figure 1 is a view showing a jack enibodied by the present invention as applied in use to the wheel and journal box of an ordinary type of railway car; the box and wheel being shown in vertical section for better illustration.

Figure 2 is a central vertical section of the jack.

Figure 3 is a horizontal section taken on the line 3 3 in Figure 2.

jack.

Figure 5 is a detail View showing the applicationof the jack head to ournal boxes of that type equipped with tie bars.

Referring more in detail to the drawings Figure 4 is an inner side elevation of the 1 designates the casing, or housing, of the ack; this being somewhat cylindrical in form a and having an integrally formed, laterally pro ectingshoulder 2 at oneside, with a slightly inclined under surface 3 to which a toothed bearing plate 1 is fixed 1) bolts, or the like, as indicated at 5. tained within the jack housing and extend- Sli ably coning from the upper end thereof, is a lifting;

post This is keyed against rotation in the housing, as 1nd1cated at T, and is provided at its upper end with a shoe or head 8 adapted to engage with the journal box, and within the housing it is threaded, as at 9, onto a screw 10 that is revoluhly supported at its lower end through the intermediacy of antifriction bearings 11 upon the closed lower end or base of the jack housing. Encircling the lower end of the screw and fixed thereto, is

a bevel gear 12 that meshes with a drivin bevel gear Wheel 13 that is fixed on a shaft 1 extending horizontally within the casing and j which, at its outer end, has a ratchet wheel 15 fixed thereon. A hand lever 16 is pivotally it is in use as a means of preventing outward tilting of its upperend when lifting pressure is applied and which will be caused by the ofl set relation of the shoulderQavith respect to" the axial line of thepost 6, IQhave provided a horizontal bore 18 'inthe base of the jack.

housing, and, in this'bore, have slidablykeyed" a pin 19. This pin is adapted to project from the jacl: housing at a point directly, below the shoulder 2' and it may be extended, as presently described, into contact with the vertical web of the rail on which the wheel rests. Threaded into the inner end of the pin, is a screw 20 that is revolubly lixed in the housing and which is provided at its outcrend with a wrench head 21 whereby it may be rotated for the purpose of extending or retracting the pin. i i 1 It is preferred that the outer endportion of the hand lever 16 be disconnectible from within a socket in the mounting head, or-end portion, designated at 16, and providedjwith a wrench socket, as at 22, applicable tothe head 21 so that no special wrench need be provided for the purpose of adjusting the screw 20.

When the jack is to be put in use, the shouldered portion 2 of the housing is lirst seated upon the projecting riin 24 of the car wheel 25 at a point directly below the axle 26; the teeth of the bearing plate 4: that is secured to the shoulder being so constructed as to preclude any possibility of the shoulder slipping oil the flange as pressure is applied. T he lifting post 6 is then extended upwardly by manipulation of the handle 16 bring the shoe 8 against the under side oi? the ournal box 29, as shown. in Figure 1. In order that the shoe may not slip outwardly, I have provided it with a transverse groove 30 in which a latch plate 31 is pivotally mounted by a horizontally extending pin throiugh the shoe. The latch has an upstaiulin5; ilioot 33 at one end that is adapted, when the latch is in use, to engage with the rear edge ot the journal box, as in Figure 1;

Itwill be stated. here that in eel-t types of construction, the journal bones oi: a truck are connected across the top and bottom by arch bars. Some of hose bars are quite w de and are in such position that the jack could not be set perpendicularly in use without the head 8 overlapping the bottom h in order to :tacilit ie the use of the ja of this latter construction, the u of the head is cut down at si a vertical shoulder 2'? for engaging of the bottom tie bar, as shown in i. This prevents the jack head slippi O wardly and affords a good bearing for The latch 31 is not required when the feel: is used with boxes so equipped but is revere l. in its position by si'vinging it about its pix pin, so that it will lie within the groove with the foot extending downwardly.

After the ack has been properly positioned on the car wheel flange and the shoe and litting post extended against the journal boa: by inani 'iulai'sion of the handle it, the pin it) is extended into contact with the rail web. T he hand lever is then manipulated 'to e? the liftingpost to jack up the ournal b0) tieiently that the brass, or hushi as cat-ed at ill in Figure 1, will be lifted from the axle and may be removed and replaced.

While the jack here shown has been designed with a shoulder at one side adapted for use in a certain way, it is rea apparent that this construction does not prevent its use in the ordinary way for any other jacking purpose, since, if it is not desired to support the jack in use from. the car wheel flange, it may be seated on any suitable blocking and used as the ordinary lilting jacl; is 110W used.

This invention provides for a very simple ly I and ellicient jaclq, for the purpose specified and requires no blocking or preparing of an y suppoitinn toundation and, in this way, greatly facilitates the worl: for which it is intended It to understood that the details of construction oi the jack mechanism; that is, the means whereby the lifting post is extended or retracted, can be oi any suitable construction and may be changed or led to meet any requirements necessary.

l-liayingthus described my invention, what I claim. as new therein and desire to secure by Letiers-Patent, is:

l. A re-brassing jack oil? the character described contiprising a jacl: base housing provided at one side with a laterally extending shoulder adapted to restupon the rim flange of the car wheel to support the jack in use, a lilting post extendihle from the jack housing having a shoe at its upper end adapted to seat against a jtnurnal box, said shoe being provided h a trausr groove, a latch plate pirotally mounted in the groove to lie llush with the top of the shoe and having a laterally turned toot at one end adapted, when the latch is in itunctional position, to engage with tlle eiul of the journal be); to prevent outward slipping of the shoe.

ill re-bra s up; jael; oi the character described eonij 'ng a base housing provided at one side with a laterally extending shoulder adap ed to rest upon the rim flange of a at whe l to support the jacl; in use, a lifting post entendihle from the jtit'ii having a shoe at its upper end ada ited to seat against a journal her, said jack housing having a horizontal bore in its lower end, a pin i-ilidably keyed in the bore, a screw revolubly fixed in the bore and threaded into the pin and having a head eliteriorly of the housing, where by it may be rotated to extend the pin into contact with the web of a rail on which the car wheel to prevent outward tilting of the upper end i 0 jack in use.

8. A re-bra' 1p; jacl: of the character do scrihed eoniprl a base housing provided with a laterally extending shoulder at one side havinga toothed plate tired thereto adapted for supporting contact upon the rim flange of a car wheel, a lifting pest QXtGl').(lll')l(! from the jack provided witha shoe at its upper end adapted to seat against a journal lJOII, means on the shoe tlorpreyenting out ward slippage, a pin slidably keyed in the lower end the eel: housin and an adjustin g; screw connected with the pin operable to extend it into holding; contact with the web oi? the rail on which the car wheel rests for the purpose set forth.

Signed at Cascade Tunnel, lVashington, this 30th day of November, 1926.

VVAL'IER W. MATTHES.

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