US1507747A - Car-door-fastening device - Google Patents

Description

Sept. 9. 1924. 1,507,747

J. H. MAYFIELD CAR DOOR FASTENING DEVICE Filed July 23, 192:5

my 6 ly 7 Fry 8 Patented Sept. 9, 1924.

UNITED STATES JOHN H. M Y InLn, or NORFOLK, VIRGINIA.

CAR-DOOR-FASTENING DEVICE.v

Application filed July 23, 1923. Serial No. 653,261.

To all whom it may concern:

Be it known that I, JOHN H. MAYFIE-LD, a citizen of the United States residing at Norfolk, in the county of Norfolk and State of Virginia, have invented certain new and useful Improvements in-Car-Door-Fasten fastentrain and in starting and stopping, and'to prevent such, pieces of wood are nailed at the ends of the doors when closed which ordinarily injures the car and its doors and is no more effective than driving large nails in the'doors and frequently work apart.

A further object is to provide meanswhereby the doors may be wedged togetherfirmly without injury to the car or its doors, or the doors may be separated at any distanceand locked in that position in which case the ordinary box car may be used for transporting live stock, preventing their leaving the car and affording plenty of air.

A further object of theinvention is to provide a positive fastening meansso that they may be locked either closed or open, furnishing anti-friction means for the easy operation thereof, and also to provide for the'sealing of the cars in a manner generally used by railway. companies;

M device will enable one door to be tight. against another, (in case of double doors), or close up to the door jamb, in singledoors at all times as any lost motion or defective door construction will notinterfere with the proper functioning of the device and is independent of any fixed point on the on proper.

Further objects and advantages will be more fully described herein and specifically pointed out in the claims hereunto annexed recourse being had to the accompanying drawing forming a part of this specification in which:

Figure 1 is a side view of a. portion of a box car and its double sliding doors.

Figure 2 is a front view of my complete device without the end plates or covers.

Figure3 is a cross section on the line 1-2 in Figure 4.

PA'rrnaT oFFIca. I *6 Figure 4 is a front view with the face or cover plate removed to show the interior ar' rangement.

Figure 5 is an end shown in Figure 4. i Y

Figure 6 is a side elevation of the wedge block or chocking device.

view of the device Figure 7 is a front elevation of the same.

Figure 8 is a fragmentary portion of twoparts of the device showing a modified formvof anti-friction rolleror whee-1..-]

In the drawing like reference numerals indicate similar parts in allfl'the, several views. 1

In Figures 1 and 3, 1 represents. the. car

body provided with the usual double slid ing doors 2 and 3. .The doo-r s inay behung at the upper part of the carsnear the eaves, in some type of cars, or upon a horizontal supporting bar or rail below the doors, as

at 4: and such is used to; exemplifymy in vention. The rails 4' are suitably supported and extend the proper distance from the car body, by means of the extensionsjor.

brackets 5, Figures, 1 and 3, or-in any desirable mannen;

6 isthemain casting element ofmy invention and has a flange/7 provided with holes 8 for-the bolts for holding the same atthe lower edges of the cardoo-rs 2 and 3.

10 is the front or face portion of the. cast.-

ing 6 and is provided" with'holes 10 forthe bolts: 10 fortthe same purpose as the bolts 9 and also to' secure the hereinafter. cover plate thereto.

The casting 6 is provided with a cored recess 11 and a largerrecess 11 both being connected to formone opening-of different heights. a The narrow recess is also provided with a semi-circular recess or seat 12 for the positioning of the roller or'anti-friction wheel 13, and thelarger recess, for the hereinafter described wedge or chocking block 13 is a central orifice in the roller 13 forxthe passage ofthe bolt or rod 1 1, F ' igfures 2, 3 and 5, acting as its axle and for holding the two parts of my invention, that is to say, the casting 6 and its hereinafter named cover, together.

'15 is a wedge shaped block vhorizontally slidable and liftably positioned in the larger recess 11 and is provided with tapering chocking point or projection 16, a rounded rear bottom portion 17, and two laterally projecting lugs Band 19, one on each side thereof and disposed at a slight angle to the horizontal plane of the block, as shown in Figures 6 and 7.

20 is the face plate or cover fitting over the casting 6 and therefor encloses the roller 13 and the wedge or chocking block 15 within their respective cavities or recesses and secured by the bolts 10 and 14 passing through the part 10 of the casting.

2O are curved slots in the cover or face plate 20, also in the main casting 6, the latter being so placed in case the device is to be used in a reversed position.

In order to cover up the ends of my device so as to completely enclose the same, I provide the end plates 21. having holes 22 therein, (Figure 3), for the bolts or screws 23. The end plates are also provided with rectangular openings or orifices 23" for the slidable mounting of the device upon the door supporting rail or rails 4, as shown in Figure 5.

24 is a bolt passing through the plates 6 and 20 and also through the lower or suspension points of the car door, and which, at the same time, serves for the axle or fulcrum of the locking latch hook 24 The latch hook consists of the curved working :taces 25, the fiat portions 26 and the tapcred nose or end 27 and such arrangement permits the hook to more effectually wedge itself upon the inclined faces of the wedge block lugs 18, as shown in Figure 2.

27 is a staple or loop in alignment with the portion 27 of the hook 24 into which it enters and when in the proper place, the hole 28 is slightly below the staple so that the ordinary strap or wire-car seal may be inserted and sealed at the lower edges of the doors instead of at the middle portion thereof.

The hook 24 is provided with a projection or lug 31 for receiving the impact of a hammer in order to disengage the hook from the lug 18 and the staple 2".

In Figure 2, 29 represents the ordinary strap for the car seal 30, which is inserted in the orifice 28, as described.

At the top portion of Figure 4, the arrow 34 indicates the direction of the car door in opening and it will be seen that when the wedge or chock 16 of the block 15 is under the wheel or roller 13, it will be impossible for the latter to move or turn, inasmuch as the hook 24 is down and exerts pressure against the lug 18 thus holding the wedge 16 under the roller, and as the block 15 is therefore immovable, the doors are effectually held at anypoint upon the rail 4.

To release the roller 13, the hook 24' is thrown upward as shown by the dotted lines in Figure 2, which moves the block 15 and wedge 16 to the right and clears the path of the roller and the doors can be readily opened.

The position of the checking or wedge block when released from under the roller 13 and raised by the curvature of the slot 20, is shown by dotted lines in Figure 4.

hen the chocking point 16, ot the block] 15, is raised by having the lugs 18 raised by being placed at the centre or at the right hand end of the slot, the rollers become the a usual anti-friction means and the 'doors may be easily operated. 3

The dotted lines 33 in Figure 4, show a modified form of recess wherein a tapering upper surface is used, but I find that the arrangement shown by full lines is to be preterred.

In Figure 8 I show a modified. form for the rollers 13, if desired,,wherebfy the round ed pins 32 are cast with they wheel or roller and introduced into correspondinglyshaped cavities in the parts 6 and 20 which dispenses with the use of the bolt 14, as in Figure 3. I

My invention is both cheap and eflicient and locks the doors at any point along the rail.4 even if the abutting member expands or shrinks or has lostrmotion, my invention provided for closed doors at all times, when so desired, and no amount of jarringwill loosen the wedge-1'6 as long as the hook 24 is in place.

I claim: I c In combination wit-h slidingdoors, of a recessed casting, roller or wheel supporting means in said recess, a wedge adapted to chock said roller supporting means against movement, projection or lug inean's thereon, a curved slot for said lug or projection adapted to raise and lower said wedge, and hook or lever means adapted to engage said lug to prevent movement of said wheel sup-'- porting means.

In testimony whereof I have hereunto affixed my signature.

JOHN H. ,MAYFIELD...

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