US1768544A

US1768544A - Car-door jack

Info

Publication number: US1768544A
Application number: US340555A
Authority: US
Inventors: John T R Conrad
Original assignee: Individual
Current assignee: Individual
Priority date: 1929-02-16
Filing date: 1929-02-16
Publication date: 1930-07-01
Anticipated expiration: 1947-07-01

Description

July 1, 1930. J. T.YR. CONRAD OAR DOOR J'ACK Filed Feb. 16., 1 929 5 Sheets-Sheet l r I Inventor T/hn T.R. Con rad July 1, 193 0. .1. T. 'R. CONRAD 1,768,544

CAR DOOR JACK Filed Fen-16, 192? s Sheetg-Sheet 2 Inventor I O/In T. B. comm! y 1, 9 I I J. T. R. CONRAD 1,758,544

vCAR DOOR JACK Filed Feb. 16, I929 3 SheetsSheet 3 Inventor 1707111 Ti C n rad Attorngy I Patented July 1, 1930 a if .JOHN T; B. CONRAD, or nnsr CLEVELAND, om

CAB-DOOR JACK Application filed February is," 1929. Serial This invention relates to new and useful improvements in car door jacks and aims to provide a device that is specifically adaptable for use in the opening and closing-of car doors.

5 By reason of the present device railroads will save considerable amount of money owing to the decrease of repaired doors and sides of box cars caused by forcing doors open and shut with a bar orother tool. 1

An important object of this invention is to provide a car door jack that comprises certain elements permanently associated with the two slide doors of the car as well as other I separate elements adapted for association 15 therewith to be manually operated whereby to cause the opening and closing of the doors and this in a relatively easy and rapid manner. v Furthermore the invention is character- 20 ized-by its simplicity of construction and inexpensiveness of mZLDIlfaCbUlQ', the device consisting of relatively few parts being. so coreof d1'sar-' lated as to reduce the possibility rangeinent to a minimum. e

With th foregoing and otherobjects in view as the nature of the invention will be better understood, the same comprises the novel form, combination and arrangement of parts hereinafter more fully described, shown in the accompanying drawings and claimed. In the drawings wherein like reference characters designate corresponding parts throughout the several views: i v Figure 1 is a fragmentary side elevationof a box car wherein the adjacent sliding doors are equipped with my improved jack-to facilitate the proper and rapid opening oft-he doors, 1 v V I Figure 2 is a detail longitudinal frag- 'mentarysection through tlie cai' takenabove the device and looking downwardly thereon,

Figure 3 is an enlarged fragmentary elevation of the ad aQent edges of the-door and a longitudinal section through the gear box ciation with the'doors,

Figure 4 is a'vertical section through the: g l

below this gear 14; are oppositely extending V rackbars 15'-l5,'th'e inner e 1 gear box of thedevice, y 1

Figure 5c is a longitudinal vertical section illustrated in Figure a gear-casing of the devioeyfor more clearly illustrating the construction of the device and its assotaken substantially upon the line 5+5 of Fig i ure e looking inwardly toward the box,

Figure 6 is a perspective of the gear box, the cover unit being removed threfrom,

Figure '7 is a perspective gear box cover, i

Figure 8 is a top plan view of the'sectional i of the spur gear unit mounted for rotation within the gear box,

\ Figure 9 the rack bars that compris tures of the present inventio ,Figure 10 is of a modified is a top sidepe'rspective of one of e essential feafragmentary side. elevation "orm of rack bar, and Figure 11 s a front side perspective of one of the tin carrying plate members associated with each of the sliding door Now having particular t generally a conventional box car while B designates'theusual sliding doors associatedtherewith.

drawings A designates sof the box car. eference to the In carrying out'the present invention I provide a pair o'fmetallioplates 5- 5 adapted to be rigidly secured to theouter sides of the doors B B adjacent theinner said plates being ranged one Adapted to be secured to side of this boxing is a pair 11. The invefitionfurof'cov'er sections 10 -10, the adjacent edges of which are edgesthereof, above the other as clearly illustrated in Figuresl and 3.

formed centrally with an as more clearly 7 comprising 7 ar wallof which is formed centrally with a circular opening 9;

the open front formed intermediate theirupper and lower ends with rounded notches ly illustrated' in Figure 5,

'Extending through 11-1 1, to provide a circular opening of: the cover as more clearthis opening and en tering the opening 9' n' thei'rear wallof the boxing 9 is ashaft 12, thelouter is provided with a relatively wheel13. I Within the casing,

end of which large hand 95 said shaft 12 is r providedfwith a ratchet gear 1 L while longitudinally slid'able' throughgthe casing above and dges thereofgbe- 10c 4o 7 idly associated with the sliding doors of the ing provided with rack teeth but have mesh with the ratchet gear 14, see Figures 3 and 4E.

The ends of these racks bars 1515 adjacent the pin carrying plate 55 are in each instance provided with an eye 16 for loose engagement over the adjacent pin 6 of the respective plate 5 associated with the doors of the box car.

Furthermore the opposite ends of said rack bars are provided at their inner surfaces with stop lugs 17 -17 to limit the movement of the bars through the gear casing in their opening direction.

If desired the eyes of said rack bars 15 may be of oval shape as designated by the reference character 16 in Figure 10. Obviously therefore when'the doors are closed as illustrated in Figure l the rack bars 1515 are suspended outwardly so that the eye end thereof will be directed toward the gear casing. 1

These eyes of the bar are then arranged over the pins 66 and the wheel 13 then rotated obviously causing the movement of the rack bars and the same general method is employed in closing the doors BB after the box car has been loaded.

It will thus be seen that I have provided a novel, simple and useful means for openingand closing the sliding doors of box cars and even though I have herein shown and described the invention as consisting of certain detail structural elements, it is nevertheless to be understood that minor changes may be made therein without affecting the spirit and scope of the appended claims.

Having thus described my invention, what I claim as new is:

1. In a box car jack of the character described, pin members permanently and rigbox car, a pair of reversely movable bar members having eyes at one of their ends whereby to facilitate theirdetachable association with said door pin and manually controlled means causing the reverse sliding movement of said bars with respect to each other after they have been attached to said pins.

of the pins in a manner to detachably mount said rack bars thereon, a gear casing through which said rack bars are slidable, a manually rotatable rack gear within said casing in operative engagement with the rack bars whereby to cause the reverse longitudinal movement of the bars when said gear is rotated, and an actuating handle connected to the gear.

In testimony whereof I affix my signature.

JOHN T. R. CONRAD.

2. In a detachable box car ack of the character described, a pair of rectangular anchoring plates having laterally extending pins constructed for rigid and stationary association with the sliding doors of the box car, a pair of reversely movable rigid bars having eyes at one of their ends for the reception of the pins in a manner to detachably mount said bars on said pins, and means for shifting said bars in reverse directions after same have been mounted on the pins of the anchoring plates.

3. In a detachable box car jack of the'character described, a pair of pin members adapted for rigid and permanent mounting on the sliding doors of the box car, a pair of rack bars having eyes at one end for the reception