US1094483A - Door-operating mechanism. - Google Patents

Description

F. SEABERG.

DOOR OPERATING MECHANISM.

APPLICATION FILED MAR a 1909 1,094,483. Patented Apr.28, 1914.

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F. SEABERG.

DOOR OPERATING MECHANISM.

APPLICATION FILED MAR. 15, 1909.

Patented Apr. 28, 1914.

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DOOR OPERATING MECHANISM.

APPLICATION IILED MAR. s, 1909.

Patented Apr. 28, 1914.

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F. SEABERG.

DOOR OPERATING MECHANISM.

APPLICATION FILED MAR. B, 1909.

1,094,483. Patented Apr. 28, 1914.

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F. SEABERG.

DOOR OPERATING MECHANISM.

APPLICATION EILED MAE. s, 1909.

Patented Apr. 28, 1914.

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COLUMBIA PLANDGRAPH co., WASHINGTON, D. c.

.A rED STATES PATENT OFFICE.

FREDERICK SEABERG, OF CHICAGO, ILLINOIS, ASS-IGNOR T0 NATIONAL DUMP CAR COMPANY, A CORPORATION OF MAINE.

DOOR-OPERATING MECHANISM.

Specification of Letters Patent.

Patented Apr. 28, 1914.

Application filed March 8, 1909. Serial No. 481,919.

1 0 all whom it may concern:

Be it known that I, FREDERICK SEABERG, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Door-Operating Mechanism, of which the following is a specification.

The object of my invention is to provide an improved operating mechanism for the doors of dump cars.

\Vhile the invention is of wide application, it is more especially designed for use in that class of cars in which a horizontal floor is made partially or wholly of downwardly opening doors.

By my improved mechanism, means are provided for raising the doors by a winding shaft and chain, during which operation the shaft is positively locked out of the path of movement of the doors, and afterward moving the shaft beneath the doors to support them in closed position and relieve the operating chains from strain.

Otherand further objects of my invention will appear from the following description and, claims, taken in connection with the drawings, in which- Figure 1 is a side View of part of a car embodying my invention. Fig. 2 is an end view partially in section showing the dump doors open. Fig. 3 is a view similar to Fig. 2 but showing one of the dump doors closed. Fig. 4 is a fragmentary plan view showing one of the doors. Fig. 5 is an elevation of one of the doors and cooperating mechanism in closed position. Fig. 6 is an elevation partially in section showing one of the cross sills and part of the adjacent doors. Fig. 7 is a section on the line 7 of Fig. 5. Fig. 8 is a section on the line 8 of Fig. 10. Fig. 9 is a section on the line 9 of Fig. 10. Fig. 10 is a fragmentary plan view showing the end of one of the cross sills together with the two adjoining doors and the associated mechanism.

The car in connection with which I have illustrated my invention comprises a center sill 1 formed of two channel beams connected by a cover plate 2. Resting upon the center sill and extending transversely of the car are the cross sills 3. A central floor plate 4: extends longitudinally of the car above the center sill and is supported upon the cross sills 3, and if desired may be braced directly from the center sill. The car sldes 5 are supported upon the Outer ends of the cross sills and may be reinforced by stakes 6 also secured to the cross sills. At the base of the sides and resting directly upon the ends of the cross sills I have shown angle 1rons 7, which form the lower part of the side wall and add stifiness thereto. As shown in detail in Fig. 6, the cross sills comprise a central web reinforced at its upper edge by angle irons 8.

The doors 9 are in the present instance shown as hinged to standards 10 secured to and projecting above the center sill, the hinges 11 of the doors being arranged beneath the projecting edges of the cover plate 4: where they are protected from clogging by the contents of the car. The doors in closing contact with the under surfaces of the central cover plate 4, the angle irons 8 on the cross sills and the angle irons 7 at the base of the side wall.

Pivoted to the cross sills 3 adjacent their Outer ends, but within the outer edge of the door openings formed between the side walls, the cross sills and the central cover plate are hangers 12. In order to afford a secure bearing for the hangers 12, straps 13 are secured to the cross bearers by means of rivets or bolts 14: which pass through the web and reinforcing angles 8 of the cross sills. The outer ends of the straps 13 are bent outwardly from the cross sills, and bolts 15 passing through the outer ends of said straps and through the cross sills afford bearings for the hangers 12 in the space between the outer ends of the straps 13 and the cross sills. Pivoted in the free ends of the hangers 12 at each side of the car is a winding and door supporting shaft 16, and chains 17 are each secured at one end to said shaft 16 and at the opposite end to lugs 18 secured to and projecting downwardly from the free edges of the dump doors.

Owing to the position of the pivots 15 of the hangers 12 inside of the outer edges of the door openings, the shaft 16, under the influence of gravity, normally drops to a position directly in the path of movement of the outer edges of the doors as they are moved to and from closed position. In on der to hold the shaft 16 out of the path of movement of the doors for the purpose of permitting them to be closed, I provide locks or latches pivoted at 21 to the cross sills. The outer end of these look levers being of greater weight than the inner end, they normally tend to fall under the influence of gravity to the position shown in dotted lines in F ig. 8, in which position they bear on the hangers 12 and serve to securely and positively iold the shaft 16 in the position shown in dotted lines in that view where it is out of the path of movement of the doors. Preferably, one of the locking levers 20 is provided upon each of the cross sills, and each of the dump doors is provided with a trip 22 secured to the reinforcing angle 23 thereon and projecting outwardly from the door sufficiently to contact wit-l1 and raise the lock 20 when the door approaches closed position. Upon rotating the shaft 16 therefore, the doors are raised by means of the chains 17 which wind thereon, and just as the door approaches closed position, the trips 22 thereon raise the outer ends of the locks 20, thus permitting the shaft 16 to drop under the influence of gravity and the inward pull of the chain 17, thereby assuming the position shown at the leftof Fig. 2. In this position the operat ing shaft is directly beneath the outer edges of the doors and in contact with the shoes 18 to which the chains 17 are attached. As clearly shown in Figs. 2 and 7, the under surface of the shoes 18 tapers outwardly toward the under surface of the door, thus affording an inclined surface against which the shaft 16 exercises a wedging action as it is drawn inwardly after the release of the locks 20.

Any suitable means may be provided for rotatin the shaft 16. In the present in stance I have shown spur gears 2 1 and 25 secured to said shaft where it projects beyond the end of the car. A lever 27 rotatably mounted upon said shaft bears a reversible pawl 26 whereby the shaft may be rotated in either direction through power applied to the lever 27. A. detent 28 is pivoted to an arm 29 secured to the shaft 16 and serves to restrain the shaft against reverse movement when it is being rotated to wind the chains for the purpose of closing the doors.

For the purpose of displacing the shaft 16 from its position beneath the outer edges of the doors as illustrated at the left of F ig. 2, for the purpose of permitting the doors to drop, I secure to said shaft friction wheels 30, and coacting friction members 31 are secured to the cross sills 3. The members 30 and 31 may take the form of gears or may simply have serrated surfaces, it being understood, of course, that the surface of the friction member 31 is concentric with the pivot 15 of the hangers 13 in which the shaft 16 is mounted. Referring to the door shown at the left of Fig. 2, and also to Fig.

9, it will be apparent that when the shaft 16 is rotated in a clockwise direction the engagement between the friction wheel 30 and the friction member 31 will cause the shaft 16 to move outwardly out of the path of movement of the door and will at the same time permit the chains 17 to unwind. As soon as the shaft 16 is clear of the door, the latter will, under its own weight and that of the load thereon, drop to open position. As soon as the doors have dropped sufliciently to carry the trips 22 away from the locks 20, the latter will fall to the position shown in dotted lines in Fig. 8, thus positively holding the shaft 16 out of the path of movement of the doors until they are again raised.

I would have it understood that I do not desire to limit myself to the precise con struction and arrangement of parts shown in the drawings and herein described, as various modifications or alterations may be made without departing from my original invention,

I claim:

. 1. A drop bottom car ooor mechanism comprising in combination with the car door, members pivoted at their upper ends to the car structure adjacent the free edge of the door to swing away from the door to permit the door to open, and flexible door closing mechanism connected to said swinging members and to the door to cause the lower ends of said members to swing under the door when closed.

2. In a car of the class described, a floor provided with door openings, doors hinged adjacent one edge of said openings, shaft bearings pivoted adjacent the opposite edge of said openings, a shaft mounted in said bearings, chains secured to said doors and shaft, means for moving said shaft beneath the door to support the same in closed posi tion, and to move said shaft out of the path of said door.

3. In a car of the class described, a floor provided with door openings, doors hinged adjacent one edge of said openings, shaft bearings pivoted adjacent the opposite edge of said openings, a shaft mounted in said bearings, chains secured to said doors and shaft, means for holding said sha't out of the path of said doors, and means controlled by the movement of the doors for llowing said shaft to move beneath the doors.

1. In a car of the class described, a floor provided with a door opening, a door hinged adjacent one edge of said opening, shaft bearings pivoted adjacent the opposite edge of said opening, a shaft mounted in said bearings, and movable between a position beneath said door and a position out of the path thereof, a chain secured to said shaft and door, a stop normally holding said shaft out of the path of said door, means for rotating said shaft to wind said chain thereon, and a trip on said door adapted to move said stop to release said shaft.

5. In a car of the class described, a floor provided with a door opening, a door hinged adjacent one edge of said opening, a winding shaft adjacent the opposite edge of said opening and movable from a position beneath the door when closed to a position out of the path thereof, a chain secured to said shaft and door, means for rotating said shaft, means positively locking said shaft out of the path of said door when the free edge of said door is beneath said shaft, and means for releasing said locking means.

6. In a car of the class described, a floor provided with a door opening, a door hinged adjacent one edge of said opening, a winding shaft adjacent the opposite edge of said opening and movable from a position beneath the door when closed to position out of the path thereof, a chain secured to said shaft and door, means for rotating said shaft, means positively locking said shaft out of the path of said door when the free edge of said door is beneath said shaft, means for releasin said locking means, and means whereby the rotation of said shaft to unwind said chain causes said shaft to move out of the path of said door.

7. In a car of the class described, a floor provided with a door opening, a door hinged adjacent one edge of said opening, hangers pivoted inside the opposite edge of said opening, a winding shaft mounted in said hangers, means normally locking said shaft in raised position out of the path of said door, a chain secured to said shaft and door, means controlled by said door for re-- leasing said locking means, a friction wheel upon said shaft and a coacting friction member operable to impart a bodily mov ment to said shaft when said locking means are released and said shaft is rotated.

8. In a car of the class described, a center sill, cross sills and side walls, doors hinged at their inner ec ges in the openings between said sills and side wall, hangers pivoted to said cross sills adjacent their outer ends but inside of the outer edge of said door openings, a winding shaft mounted in said hangers, locks pivoted to said cross sills and normally holding said shaft out of the path of movement of said doors, and trips on said doors, said locks lying in the path of said trips.

9. In a car of the class described, a center sill, cross sills and side walls, doors hinged at their inner edges in the openings between said sills and side wall, hangers pivoted to said cross sills adjacent their outer ends but inside of the outer edge of said door openings, a winding shaft mounted in said hangers, locks pivoted to said cross sills and normally holding said shaft out of the path of movement of said doors, trips on said doors, said locks lying in the path of said trips, friction wheels on said shaft, and coacting friction members secured to said cross sills.

10. In a. car, the combination with a hinged door, of a rotatably mounted shaft, pivotally mounted means for supporting the same, said supporting means being designed for adapting the shaft to move bodily to and from a position beneath the door, and flexible connecting means between the shaft and door.

11. In a car, the combination with a hinged bottom door, of a rotatably mounted shaft, vertically swinging links sustaining said shaft and adapted to swing for causing the shaft to move bodily to and from a po sition beneath the door, means for rotating the shaft, and a flexible connection between the shaft and door.

12. In a drop bottom car, the combination with the car door, of door operating and supporting mechanism comprising a rotary shaft, chains secured to said shaft and engaging said door to close the same when the chains are wound upon the shaft and to permit the opening of said door when the chains are unwound from the shaft, and a pair of transversely swinging members pivotally supported at their upper ends upon the car structure and operatively associated at their lower ends with said chains and shaft to be swung inwardly below he level of the door when closed to relieve the strain on the chains.

13. I11 a door operating means, the combination comprising a door, transverse members extending below the door at the sides thereof, links pivotally supported by said transverse members, a shaft carried by said links and a chain connected with said door and shaft adapted to lift said door and swing said shaft under the door when in its closed position.

1a. In a drop bottom car, the combination of a suspended swinging rotating shaft located below the car door when in a closed position and suitable means for moving the swinging shaft from under the car door when desired to open the car door, substantially as specified.

15. A drop bottom car door mechanism comprising in combination with the car door, a swinging operating shaft with means for rotating same, a flexible connection from the shaft to the car door and shaft supporting links which transmit the load to the car body when the doors are closed, substantially as specified.

16. Car door mechanism comprising in combination with the car door, an operating shaft, a swinging support from the car body for said operating shaft, flexible connections from said operating shaft to said car door,

means for operating said shaft whereby said shaft moves to or from a position beneath the car door as described.

17. In a dump car, the combination of a swinging operating shaft supported from pivot points on the car body, flexible connections from said swinging operating shaft to the ear doors, means for rotating said shaft to or from a position below the car door when the door is closed, substantially as specified.

18. The combination in a car body, of car doors, swinging operating shafts suspended from the car body, flexible connections from the swinging shafts to the car doors, suitable means for rotating the operating shafts and for transferring the load from the shafts to the car body when the doors are closed, substantially as specified.

19. The combination in a car body, of a series of car doors, swinging operating shafts provided with attachments to the ear doors and means for rotating the shaft to or from a position below the car door, substantially as specified.

20. A car door mechanism adapted to support the car doors from the body of the car, comprising a swinging shaft, flexible connections to the car doors for lowering and elevating the same, said swinging shaft when in normal position being below the doors when the doors are closed, substantially as specified.

21. In a dump car, of the class described, the combination of a car body, car door and a door operating mechanism including an operating shaft arranged to support the door directly through a link suspended from above and pivoted to the car body, said shaft being flexibly connected to the car door, substantially as specified.

In a dump car of the class described, the combination of a car body, car door and a door operating mechanism, a swinging shaft supported from the car body, flexible connection from said shaft to said car door, suitable means for actuating said shaft and all being arranged in such a manner that the shaft will be clear of the travel of the door during its movement, but in a position below the top plane of the door when closed, whereby said mechanism becomes a lock for the car door, substantially as specified.

23. In a door operating device, the combination comprising a door hinged near one edge thereof, a transversely movable winding shaft substantially parallel with the opposite edge of said door when the door is closed, means connecting the door and shaft, means for locking the shaft in one position, and a trip on the door adapted to release the locking means.

24:. In a door operating device, the combination comprising a door hinged near one edge thereof, a transversely movable winding shaft movable toward and from the opposite edge of said door, means connecting the door and shaft, an automatically operable latch for looking the shaft out of the path of movement of said door, and means on the door for releasing said latch.

25. In a door operating device, the combination comprising a door hinged near one edge thereof, a transversely movable winding shaft supported near the opposite edge of said door when the door is closed, means connecting the door and shaft, and a latch mounted in position to engage said shaft when the door is open, and means adapted to release the shaft when the door is closing.

26. In a door operating device, the combination comprising a door hinged near one edge thereof, a transversely movable winding shaft, means connecting the door and shaft, and a gravity latch adapted to lock said shaft in position out of the path of movement of the door.

In testimony whereof I have subscribed my name.

FREDERICK SEABERG. 'itnesses lVALTER A. Soorr, ANNA L. Var/roar.

Copies 0! this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.

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