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Publication numberUS2024338 A
Publication typeGrant
Publication dateDec 17, 1935
Filing dateDec 6, 1934
Priority dateDec 6, 1934
Publication numberUS 2024338 A, US 2024338A, US-A-2024338, US2024338 A, US2024338A
InventorsJohn Christiansen, Thompson John B D
Original AssigneeAmerican Car & Foundry Co
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Step-well closure and operating means therefor
US 2024338 A
Abstract  available in
Images(6)
Previous page
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Claims  available in
Description  (OCR text may contain errors)

Dec; 17, 1935. J.'CHRIST|ANSEN El AL 2,024,338

STEP WELL CLOSURE AND OPERATING MEANS THEREFOR I Filed Dec. 6, 1934 e Sheets-Sheet 1 j INVENIORSI J lgfizggrlkfiamm 0 72 am vsoiz MFTORNEY 3 i n a a W N i mfimmh mmmw H N wank... I nnnnnnnnnn in? m m n. VIII/ll l/ll/l/ll/l/ll/l/l/ 1E :55: v I

Dec. 17, 1935. J. CHRISTIANSEN ETAL 2,024,338

STEP WELL CLOSURE AND OPERATING MEANS THEREFOR Filed Dec. 6, 1954 6 Sheets-Sheet 2 jNVENTORS z/Z/m (ZrzIsZz'azzserz .Bfl 7207/? $07: 1% .ITORIZZY 1935- J. CHRISTIANSEN EIAL STEP WELL CLOSURE AND OPERATING MEANS THEREFOR Filed Dec. 6, 1954 e Sheets-Sheet s A TTORNEY Dec. 17, 1935.

J. CHRISTIANSEN ET AL 2,024,338

STEP WELL CLOSURE AND OPERATING MEANS THEREFOR Filed Dec. 6, 1934 6 Sheets-Sheet 1 V2 74 .26 l EL Dec. l 7, 1935. J. CHR|STIANSEN L 2,024,338

STEP WELL CLOSURE AND OPERATING MEANS THEREFOR Filed Dec. 6, 1954 e Sheets-Shed 5 INVENIOR N ER in Zzansen Jbkn 5 D Th0 M76073 BY M a MATTORNEY Dec. 17 1935. J. CHRISTIANSEN El AL 8 STEP WELL CLOSURE AND OPERATING MEANS THEREFOR Filed Dec. 6, 1934 Sheets-$heet, 6

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UNITED STATES PATENT OFFICE STEP-WELL CLOSURE. AND OPERATING MEANS THEREFOR tion of New Jersey Application December 6, 1934, Serial No. 756,234

22 Claims.

This invention relates generally to railway car construction and has particular reference to stepwell closures and operating means therefor.

The trend in railway car construction at the present time is to produce what-is known as a streamlined train; one which is so constructed that the resistance, due to wind while the train is in motion, is reduced to a minimum. To effect this it is necessary and desirable that air pockets -be eliminated to the greatest extent and the present invention therefore aims to provide a construction which will close the step-wells of railway cars to prevent the formation of air pockets and therefore reduce the wind resistance.

Another object of this invention is the provision of means for substantially entirely closing the step-well of a railway car.

Still another object of this invention is the provision of a new and improved step-well closure for railway cars and means for operating the same to open and closed positions.

A further object of this invention is the provision of doors for closing the step-well of a railway car below the usual trap door thereof.

A still further object of this invention is the provision of a step-well closure comprising a trap door constituting a part of the fioor of the car vestibule when in closed position and doors for closing the step-well below the trap door and constituting, when closed, substantially a continuation or a part of the side wall of the car; the stepwell doors and trap door being interconnected for simultaneous movement in both opening and closing directions.

A still further object of this invention is the provision of new and improved means for operating step-well closures for railway cars.

Another object of this invention is the provision of step-well closure and operating means therefor which is easy and inexpensive to manufacture and strong and durable in operation.

Other objects and advantages of this invention will be fully apparent to those skilled in the art from the following description taken with the accompanying drawings in which:

Figure 1 is a sectional view through the stepwell of a railway car showing one form of the invention.

Fig. 2 is a broken front elevation of the form of the invention shown in Fig. 1.

Fig. 3 is a broken top plan view of the construction shown in Figs. 1 and 2, certain parts being broken away and other parts being shown in section.

55 Fig. 4 is an enlarged detail view, partly in section, of certain parts of the operating mechanism of the construction shown in Fig. 1, the view being taken on the line 44, Fig. 5.

Fig. 5 is a sectional view on the line 55, Fig. 4.

Fig. 6 is a sectional view on the line 6--6, Fig. 5. 5

Fig. 7 is a top plan view of the construction shown in Fig. 5.

Fig. 8 is a sectional view, largely diagrammatic, showing the step-well doors of Figs. 1, 2 and 3 in open position. 10 V Fig. 9 is a sectional view through a step-well showing one modified form of operating means.

Fig. 10 is a fragmentary front elevation of the form of the invention shown in Fig. 9, certain parts being broken away. 15 I Fig. 11 is a fragmentary broken top plan view of the construction shown in Figs. 9 and 10, certain parts being broken away to disclose other parts in section.

Fig. 12 is a sectional View through the step- 20 well of a car showing another modification of the closure operating means, the view being taken on the line I2l2, Fig. 14.

Fig. 13 is a fragmentary front elevation of the modification shown in Fig. 12, certain parts 5 well doors in section and in open position. 35

In the drawings, only those parts of a railway car necessary to an understanding of the present invention are shown, it being understood that the present invention may be applied to any conventional passenger car. In the several views 40 of the drawings similar characters of reference designate similar parts and now, referring more particularly to the drawings, the invention is shown applied to a railway passenger car having a vestibule, the floor of which is shown at45 2, supported by car underframe parts 4 which may be sills or other underframe elements. The vestibule has the usual step-well indicated generally at 6 and provided with a series of steps 8. The side wall of the car is indicated at I!) and door posts l2 and M are also indicated in Fig. 8; door post l2 in the instance shown being formed as a part of the inner wall, [3 of the vestibule while door post I4 is shown at the end of the car body and forms a part of the end wall I6 of the car. In practice, the walls I3 and I6 are step-well walls as will be obvious.

The posts I2 and I4 are each so formed as to provide internal shoulders I6 with which stepwell doors 2!) and 22 are adapted to engage when in closed position (see Fig. 8) to constitute, in effect, parts of the side wall of the car and to close the step-well at the side of the car. This is clearly indicated in Fig. 1 where the length of the doors is shown as sufficient to substantially rest upon the lower step 8.

As shown clearly in Fig. 2 the doors 2!) and 22 are hingedly connected together at 24 and are arranged below the trap door 26, the latter forming, when closed, a part of the floor 2 of the vestibule and being normally retained in closed position by a latch 23 as shown in Fig. 3.

The trap door is rigidly connected by brackets 36, or the like, to a tubular hinge rod 32 rotatably supported in bearings 34 and 36 respectively, bearing 34 being secured to a step-well brace member 38 (see Fig. 1) while: bearing 36 is connected to door post I2, as clearly shown in Fig. 6 by being riveted thereto as shown at 31. Arranged within the double hinge rod 32 is a torsion spring 38, one end portion of which is fixedly secured to the tube 32 while the opposite end portion is secured within the bearing 36 in any suitable or desired manner, the arrangement being such that the spring constantly urges the trap door 26 to open position. The trap door 26 is provided with the usual grab handle 49. For convenience, the hinged edge portion of the trap door is termed the inner edge portion while the opposite edge or latched portion is termed the free edge portion. The edge portion of the trap door 26 adjacent the side of the car is termed the outer side edge portion. As can be clearly seen inFig. 4 a stiffener bar 42 is secured to the upper surface of the trap door 26, the latter having the usual tread surface 44 secured thereto.

Secured to the outer edge portion of the door is a retainer indicated generally at 46, said retainer depending from the door 26 and providing a stop or rail against which the upper edge portions of step-well doors 29 and 22 are adapted to contact when in closed position, as shown clearly in Fig. 4.

In the instance shown the retainer comprises substantially a box section portion 48 formed by a plate bent back upon itself and having an upper portion inwardly flanged at 59 to overlie the stiffener 42, and a lower flange 52 underlying the door 26; the flanged portions 56 and 52 being secured in any suitable or desired manner to the trap door 26.

The present invention contemplates the substantially simultaneous operation of the trap door and step-well doors to open and closed positions and, as clearly shown in the drawings, a gear sector 54 is rigidly secured to the hinge shaft 32 adjacent the outer end portion thereof and is arranged in meshing relation with the sector portion 56 of a gear 58 rotatably mounted in bearings 6| secured to step-well wall I3 and in meshing relation with a beveled gear 59 secured to the upper end portion of a vertically arranged hinge rod 66. The upper end portion of rod 69 is rotatable in a bearing 62 secured to vestibule wall I3 while the lower end portion of hinge rod 60 extends through the lower step 8 and is supported by a collar 64 having bearing on the step or on a reinforcing element 65 secured to the step, all as clearly shown in Figs. 1, 4 and 5. The hinge rod 66 is fixedly secured to stepwell door 29 by means of brackets 61, as particularly shown in Fig. 1.

Depending from step-well door 22 adjacent the free edge thereof is a guide element 66 such as a 5 bolt, pin or the like arranged in a guide slot 68 formed in the lower step 8 and so arranged as to cause relative movement or" the doors 26 and 22 on their hinges 24 whereby they will fold parallel to the adjacent step-well wall I3 in the position 10 shown in Fig. 8.

From the above description it can be seen that upon release of the latch 28 the trap door 26 will be started towards open position because of the torson spring 38 and the hinge rod or tube 15 32 will consequently be rotated in the bearings 34 and 36. The trap door 26 may then be manually lifted to complete open position. The vestibule is provided with the usual vestibule door 79 above the trap door and the vestibule 20 door is first moved to open position, this being conventional. Due to the connection between the hinge rod 32 and the hinge shaft 66 through the gearing as above described it will be apparent that upon rotation of the hinge rod 32, due to 25 opening movement of the trap door 26, the hinge shaft 66 will be actuated to fold the step-Well doors 20 and 22 to open position as illustrated in Fig. 8.

As clearly shown in Figs. 5 and 7, an angle 30 12 is secured to the vestibule wall I3 and has its horizontal flange 14 so arranged as to overlap the hinged edge portion of the trap door. In the instance shown in the drawings, to permit full opening movement of trap door 26 without 35 contact thereof with gear sector 56, a portion of said door is cut out as shown at 16 and is connected to the door by a spring hinge I6. Upon opening movement of trap door 26 the hinge portion 16 will contact with a stop 86 secured to wall so I3 and will be retained against further movement which would otherwise cause contact thereof with the gear 56.

Referring now to the form of the invention shown in Figs. 9, 10 and 11, parts similar to those 45 shown in Figs. 1 to 8 inclusive are identified by like characters. The construction shown in Figs.

9, l0 and 11 provides a modification of the operating means for the trap door 26 and step-well doors 2!! and 22 respectively and it can be seen 59 in Fig. 9 that the inner end portion of the hinge rod or tube 32 projects through the step-well brace member 38 and has a gear sector 82 secured to the inner end portion thereof and arranged in meshing relation with the sector portion 84 of a bevel gear 86 supported by a bearing 88 secured to the lower portion of the brace 38; the gear 86 being arranged in meshing relation with a bevel gear 89 fixedly connected to the upper end portion of a vertically arranged drive shaft 96 supported in bearings 92 formed at the upper and lower end portions of a bracket 94. The bracket Si is secured to and depends from the underframe member 4 of the car. The drive shaft 96 is rotatable in the bearings 92 and at its upper end portion the hub 95 of the gear 89 rests upon the upper bearing 92. Secured to the lower end portion of drive shaft 99 is a collar or the like 9'! which rests upon the lower bearing 92, all as clearly shown in Fig. 9. In this form of theinvention the bearing member 36, in which the opposite end portion of shaft 32 is supported, is formed to provide a bearing 96 for the upper end portion of the hinge rod or shaft 66. Se- 75 cured to the lower end portion of the hinge rod 60 is a link 98 connected with one end portion of a connecting rod I98 supported in a bearing I82 depending from the lower step 8 and having a clevis I04 at its opposite end portion connected by a link I06 to the lower end portion of the drive shaft 90. The clevis I84 is adjustably connected to the red I (it by being threadedly engaged therewith as shown in Fig. 9; an adjusting nut I98 being provided to retain the parts in desired position. The opposite end portion of the connecting rod I59 is provided with a clevis I89 by which said rod I68 is pivotally connected to link 98.

As to the modification shown in Figs. 9 to 11 inclusive it will be apparent that as the trap door 26 is being moved to open position, thus rotating the hinge shaft or tube 32, the drive shaft 99 will be actuated through the gearing 82, 85.

and 89 to cause movement of the connecting rod I68 whereby to operate the step-well doors 20 and 22 substantially simultaneously with the operation of the trap door.

In the form of the invention shown in Figs. 12 to inclusive the inner end portion of the hinge rod or tube 32 extends through the riser III) over the upper step 8 and is journaled in a bearing H2 secured to a car underframe part H4 which latter may be a sill or a member provided specifically for the purpose of supporting said bearing II2. In the form shown member I I4 is an angle though this is merely by way of example.

Secured to the inner end portion of the hinge tube or shaft 32 is a crank IIB to which is pivotally connected a cievis I28 which latter is adjustably connected to a second clevis I28 as shown clearly at I22. This double clevis arrangement constitutes a connection between the crank IIS and a link I2 pivotally connect-ed to clevis I29 and fixedly secured to a vertically arranged rock shaft I28, the lower end portion of which latter is journaled in a bearing I28 as shown clearly in Fig. 12. The rock shaft is guided in an upper bearing member I39 projecting laterally fro-m the car underframe part II I. Secured to shaft I26 is a collar I32 so arranged as to substantially contact with the lower surface of the upper earing I35 to prevent displacement of the shaft I26 from the lower bearing I28. Secured to the lower end portion of the rock shaft I26 is a link I34 to which is pivotally connected as by a clevis I35 an actuating rod I38, the opposite end portion of which is pivotally connected as shown at 59 to the hinge shaft I42 for the step-well doors 2!) and 22. As clearly shown in Fig. 14 the shafts I26 and I38 and the hinge rod I42 are arranged outside the step-well. Secured to the step-well door 28 are vertically spaced brackets It provided with elongated slots I46 in which latter pins I48 are positioned, said pins being formed at one end portion of hinge links I50, the opposite end portions of said links being connected to the hinge shaft I42 as shown more clearly in Fig. 14.

The hinge links IEEI, as can clearly be seen in Fig. 12, extend through horizontally arranged openings I52 formed in the step-well wall I3.

In the form of the invention shown in Figs. 12 to 15 inclusive, movement of the trap door 26 to open position obviously causes rotation of the hinge rod or tube 32 to actuate link I IS; the latter through the clevis connection and link I24 causing rotation of the shaft I26 to operate the hinge shaft I42 to effect movement of the stepwell doors and 22.

From the description just above it can be seen that in each form of the invention the torsion spring38 constantly urges the trap door 26 to open position and, upon release of the latch 28, the trap door'is started to open position. Manual lifting of the trap door 26 effects, through the several mechanisms described, movement of the step-well doors 2i) and 22 to open position. Obviously closing of the trap door causes a reversal of movement of the parts and consequently 10;.

a closing of the step-well doors whereby the latl ter form a part of the side wall of the car and eliminate the formation of air pockets in the step-well.

The drawings illustrate certain embodiments 18 of the invention but it is to be understood that i they are for illustrative purposes only and various changes in the form and proportions of the constructions may be made within the scope of the appended claims without departing from the 20 spirit of the invention.

What is claimed is: 1. In a railway car having a step well, a trap door for the step well, step-well doors forming,

when closed, a part of the side wall of the car,

a hinge shaft to which the step-well doors are connected, and means operatively connecting the trap door and hinge shaft so formed and arranged as to operate the step-well doors simultaneously with operation of the trap door.

2. In a railway car provided with a vestibule and a step well, a trap door normally forming a part of the vestibule floor, step-well doors normally constituting a part of the side wall of the car, a hinge rod to which the trap door is secured, a hinge shaft for the step-well doors, and means including gearing connecting the hinge rod and hinge shaft for simultaneous operation whereby said trap door and step-well doors are simultaneously actuated.

3. In a railway car, a step Well, a trap door hingedly connected to the car body and normally closing the upper portion of. the step well, a door hingedly connected to the car body on a vertical axis and normally closing the front portion of 457 5. In a railway car, a step well, and means clos- 4 ing said step well comprising a trap door hinged on a horizontal axis, and step-well doors hinged on a vertical axis, and means on said trap door so formed and arrranged as to constitute an upper rail for said step-well doors.

6. In a railway car provided with a step well and a trap door forming a top closure means for 05 the step well, the combination of'doors forming substantially a part of the car side wall, and closing the step well at the side of. the car, means hingedly supporting the step-well doors; and operating mechanism for the said hinge means co'n-' movement thereof to actuate said step-well doors. 7. A step-well closure and operating means therefor comprising a trap door hinged on a nected with the trap door and operable upon horizontal axis, and step-well doors hinged on a 7 vertical axis, and means operated by the trap door hinge element to actuate the step-well door hinge element to efiect simultaneous operation of the trap door and step-well doors.

I, 8. Ina railway car provided with a step well having a step therein, a trap door for closing the upper portion of the step well, a pair of coniected doors for closing the front portion of the step well and adapted to fold therewithin when in open position, a guide slot in said step, means connecting one of said pair of doors and the trap door for effecting operation of the doors in unison, and a guide member on the other of. said pair of doors slidable in said slot.

9. In a railway oar having a step well, a plurality of steps therein, closure means for the step well comprising a horizontally-hinged trap door and a vertically-hinged folding door, means connecting said doors so formed and arranged as to be operable upon movement of the trap door to simultaneously operate the folding door, and cooperable guide means on one of the steps and on the folding door.

10. In a railway car having a step well, closure 1} means for the step well comprising a horizontallyhinged trap door and a vertically-hinged folding door, and means connecting said doors so formed and arranged as to be operable upon movement of the trap door to simultaneously operate the :folding door.

11. In a railway car, a step well, a trap door hinged to the car body and normally closing the upper portion of the step well, a vertically hinged folding door for closing the front portion of the :5;step well so formed as to constitute a part of the side wall of the car when in closed position, means connecting said doors for substantially simultaneous operation, and means so arranged as to limit movement of the folding door in one direction whereby said folding door is substantially alined with the car side wall when in closed position.

12. In a railway car, a step well, a trap door normally closing the upper portion of the step well, a folding door normally closing the front portion of the step well and forming a portion of the car side wall when the door is in closed position, and means provided on the trap door adapted when the latter is in closed position to constitute an upper rail for said folding door.

13. In a railway car, a step well, horizontally and vertically arranged hinge shafts supported within the step well, closure means for the step well secured to said shafts, and means for ef- -fecting simultaneous operation of the closure means comprising interconnected gearing on adjacent end portions of the shafts and mounted within the step well.

14. In a railway car, a step well, closure means for the step well comprising a horizontally hinged trap door and a vertically hinged folding door, and means for efiec'ting simultaneous operation of the closure means comprising a drive shaft connected with the trap door, and means including a rod between the folding door and drive shaft connected with the drive shaft for operation thereby.

15. In a railway oar having a step well, a trap door for the step well, step-well doors forming,

when closed, a part of the side wall of the car, a hinge shaft to which the step-well doors are connected, a connecting rod associated with said hinge shaft, and a drive shaft operatively connecting the trap door and connecting rod adapted to operate the step-well doors simultaneously with operation of the trap door.

16. In a railway car, a step well, and means normally closing the step well comprising a pair of connected doors substantially alined with the 5 side wall of the car, a trap door, actuating means for the connected doors operatively engaged with the trap door and adapted upon movement of the latter to operate the connected doors in unison, and means provided on said trap door cooperable 10 with the connected doors when the latter and the trap door arein closed position to prevent movement of the connected doors beyond the car side wall.

1'7. In a railway car, a step well, a trap door 15 hingedly connected to the car body for closing the upper portion of the step well, means latching the trap door in closed position, spring hinge means supporting the trap door and constantly urging the trap door to open position whereby 20 upon release of the latch means said trap door is partly opened, a door hingedly connected to the car body on a vertical axis for closing the front portion of the step well, and means connecting the trap door and second-named door so arranged as to operate the said second-named door upon operation of said trap door.

18. In a railway car, a step well, a step well door normally closing the front portion of the step well, a trap door normally closing the upper 30 portion of the step well and having a portion overlapping the upper edge portion of the step well door to form a door rail when the doors are in closed position, and means connecting the step well door and trap door and operative by the 35 l latter upon movement thereof to effect substantially simultaneous operation of the step well door.

19. In a railway car, a step well, a step well door normally closing the front portion of the 40 step well, a trap door normally closing the upper portion of the step well, hinge shafts supported by the car body to which the doors are secured, and means directly connecting said shafts so formed and arranged as to effect substantially 4o simultaneous operation of the step well door upon operation of the trap door.

20. In a railway car, a step well, a step well door normally closing the front portion of the step well, a trap door normally closing the upper 50 portion of the step well, hinge shafts supported by the car'body to which the doors are secured, and means for effecting substantially simultaneous operation of the doors including gearing connecting the hinge shafts. 55

21. Ina railway car, a step well, a step well door normally closing the front portion of the step well, a trap door normally closing the upper. portion of the step well, hinge shafts supported by the car body to which the doorsare secured, (i0 and means for effecting substantially simultaneous operation of the doors including lever and link mechanism directly connecting said shafts and operative upon movement of the trap door.

22. In a railway car having a step well, closure means for the step well comprising a horizontally hinged trap door connected to the car body and a vertically hinged folding door, and means connecting said doors so form'edand arranged as to be operable upon movement of and by the trap 70 door to substantially simultaneously operate the folding door.

JOHN CHRISTIANSEN.

JOHN B. D. THOMPSON.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4174115 *Dec 27, 1977Nov 13, 1979Youngblood John WMotorized bi-fold stepwell cover
US6848735 *Jun 19, 2003Feb 1, 2005Monaco Coach CorporationStepwell cover apparatus
US6863000Jul 11, 2002Mar 8, 2005Aai CorporationPassenger rail car sliding door with high platform threshold
US7025004Nov 18, 2004Apr 11, 2006Aai CorporationPassenger rail car sliding door with high platform threshold
US8028629Oct 13, 2004Oct 4, 2011Aai CorporationPassenger rail car sliding door with high platform threshold
US8413591Sep 1, 2011Apr 9, 2013Aai CorporationPassenger rail car sliding door with high platform threshold
Classifications
U.S. Classification105/450, 49/33, 105/430, 49/94
International ClassificationB61D23/00, B60R3/00, B61D23/02
Cooperative ClassificationB60R3/00, B61D23/02
European ClassificationB60R3/00, B61D23/02