US2027599A - Car door - Google Patents

Description

Jana 39336 T. MADLAND 29@279599 CAR DOOR Filed May 8, 1955 4 Sheets-Sheet 1 5G I Jg-j 2&27599 4 Sheets-Sheet 2 Q iww mm T. MADLAND Jan, M, 119369 CAR DOOR Filed May 8, 1955 Jane 14, 1@3@ T MADLAND 2,@2?,59

CAR DOOR Filed May 8, 1933 4 Sheets-Sheet 3 T. MADLAND Jam 114 1936 2&27599 CAR DOOR Filed May 8, 1933 4 Sheets-Sheet 4 Patented Jan. 14-, 1936 CAR DOOR Thorvald Madland, Chicago, 111., assignor, by mesne assignments, to 'Ehe Youngstown Steel Door Company, Cleveland, Ohio, a corporation of Ohio Application May 8, 1933, Serial No. 669,857

16 Claims.

This invention relates to sliding car doors.

It is an object of this invention to provide sliding car doors which shall be frictionally supported in closed position.

A further object is to provide sliding car doors which shall be frictionally supported upon a track in closed position and be movable upon antifriction means along said track to full open position to completely expose the door openings controlled by said doors.

A further object is to provide sliding car doors carrying hangers comprising rollers disposed within the vertical margins of said doors which shall be frictionally supported upon a track in movement upon said rollers along said track to full open position to completely expose the door openings controlled by said doors.

A further object is to provide sliding car doors carrying hangers comprising rollers disposed within the vertical margins of said doors which shall be frictionally supported upon a track in full open and closed position and capable of uninterrupted movement upon said rollers along 25 said track to full open position to completely expose the door openings controlled by said doors. A further object is to provide sliding car doors carrying rollers disposed within the vertical margins thereof, said rollers being adapted tosupport 30 said doors for smooth unimpeded antifrictional movement upon tracks between full open and closed positions, said tracks being constructed to frictionally support the weight of said doors in the full open and closed positions thereof so as to 35 relieve the rollers of such weight.

A further object is to provide sliding car doors carrying rollers disposed within the vertical margins thereof, said rollers being adapted to support said doors for smooth unimpeded antifrictional movement upon tracks between full open and closed positions, said tracks being provided with coped portions or indentures adapted to receive the rollers in full open and closed positions whereby said tracks will frictionally support said doors and relieve the rollers of the weight thereof.

A further object is to provide sliding car doors carrying rollers disposed within the vertical margins thereof, said rollers being adapted to support said doors for smooth unimpeded antifrictional movement upon tracks between full open and closed positions, said tracks further cooperating with means provided on the doors to insure disposal of said rollers in the coped portions or indentures provided in said tracks when the doors are in full open and in closed positions closed position and capable of uninterrupted A further object is to provide sliding doors for railway house cars adapted to ported in full open be frictionally supposition, said doors in the opening movement thereof being adapted to actuate starting means carried by said cars whereby said means is automatically disposed to impart initial closing movement to said doors.

Other objects of the invention will become clear as the description thereof proceeds.

In the drawings forming part of this specification Figure l is an elevation of a sliding car door embodying the invention, a part of said door being broken away;

Figure 2 is a partial enlarged elevation of the lower portion of the door shown in Figure l, the

door being illustrated in partly open position with the weight thereof disposed upon certain of the rollers Figure 3 is a view similar to Figure 2, the door being-shown in full open position;

Figure 4 is a horizontal section taken on line l-4 of Figure 1;

Figure 5 is a vertical section Of Figure 1;

taken on line 5-5 Figure 6 is a vertical section taken on line 6-6 of Figure 1;

Figure '7 is a partial plan view of the door track on an enlarged scale;

Figure 8 is a vertical section showing a modified form of the invention;

Figure '9 is a horizontal section of the form of the invention shown in Figure 8;

Figure 10 is an enlarged fragmentary elevation of the lower part of a car door showing a further modification of the invention;

Figure 11 is a View similar to Figure 10, showing the door in full open position;

Figure 12 is a horizontal section taken on line l2-l2 of Figure 10; and

Figure 13 is a horizontal section taken on line l3l3 of Figure 11.

Referring to the drawings and more particularly to Figures 1 to 7, inclusive, thereof which upon the side wall hangers l3 and I4, adapted to support upon a track it ill by means of the roller the rollers l5 of which are the door during movement secured to the side sill H by means of a plurality of track brackets l8 riveted thereto. The door 12, which is preferably of metallic construction, may comprise the horizontally disposed corrugations I9 which merge at their ends into vertical corrugations 28 and 2I formed in the door inwardly of the forward and rear vertical edges thereof. The lower portion of the door is retained for movement upon the track l6 and prevented from disengagement therefrom by means of the upturned flanges 22 provided on the hangers i3 and I4 which engage the depending flange 23 of the track IS. The upper portion of the door is retained upon the side wall I of the car by means of the retaining plate 24 secured to the side plate 25 of the car and provided with a depending flange 26 adapted to overlap the upper margin of the door. The side plate 25 is preferably provided with a troughshaped header 21 which is adapted to be overlapped by means of the inwardly extending flange 28 provided on the angle 29 secured to the upper margin of the door. In its closed position the door is adapted to be secured to the side wall I0 by means of a locking device indicated generally by the reference numeral 36. The side wall is provided with an opening and closing arrangement comprising a bracket 3| secured to the side wall adjacent the door opening therein, an arm 32 pivotally carried by said bracket and a starting and closing lever 33 pivotally carried upon the door adjacent the forward margin thereof and adapted to cooperate with the bracket 3I to impart initial opening movement to the door and to cooperate with the arm 32 to impart final closing movement thereto.

It will be observed from Figures 1 and i of the drawings that the door I2 in its closed position is frictionally supported upon the track I6. For this purpose the track I6 is provided with spaced apertures 34 and 35, respectively, adapted to receive the rollers provided in the hangers I3 and I4 in the closed position of the door. While apertures are shown in the track IS in order to receive the rollers I of the hangers so that the door may be supported frictionally upon the track and said rollers relieved of the weight of said door it will be readily apparent that the invention is not limited to such apertures but that depressed portions providing indentures may as readily be utilized. As clearly shown in Figure '7 of the drawings, the aperture 34 provided in the track I6 is of greater extent longitudinally of the track than the aperture 35. The elongated aperture 34 is provided in order to receive the plurality of rollers i5 carried in the door hanger I3. By the provision of a plurality of rollers adjacent the forward vertical edge of the door it will be manifest that when the weight of the door is disposed upon the rollers said door may have smooth unimpeded movement upon said rollers along the track I 6 to full open position so that the door opening is completely exposed in said position. With reference to Figure 2 of the drawings, it will be observed that the door has been moved longitudinally upon the track a sufficient distance to position the weight thereof upon one of the rollers in the hanger I3 and upon the roller in the hanger I4. This movement of the door is obtained by actuation of the lever 33 which cooperates with the bracket 3! to force the rollers out of the apertures 34 and 35 provided in the track and to elevate the door relative to the track for disposal upon the rollers. The right hand roller I5, as seen in Figure 2 of the drawings, is positioned upon the track, whereas the left hand roller I5 of the hanger i3 is disposed above the aperture 34 in the track. Similiarly,

when the door is moved to full open position it will be apparent that one of said rollers I5 of the hanger I3 will have engagement with the track when the other of said rollers may be positioned above the aperture 35. The forward por- 5 tion of the door, therefore, in its movement to full open position cannot be retarded by the aperture 35 so that uninterrupted movement of the door to such position is obtained. When the door I2 has reached its full open position, as shown in Figure 3 of the drawings, said door will engage stops, one of which is illustrated at 36, secured to the track 55 and the door opening I I defined in part by the rear door post 3'! will be fully exposed. In order to insure reception of the rollers provided in the hangers I3 and !4 within the apertures 34 and 35 when the door assumes its closed position the track is may be provided with embossments 38 and 39 which are adapted to be engaged by the upstanding flanges 22 in order to' guide said rollers into said apertures.

Figures 8 and 9 of the drawings illustrate a modified form of the invention. The door I2, adapted to close the door opening II provided in the side wall III of the freight car, is supported for movement between full open and closed positions by roller hangers upon a track 40 secured to track brackets 4i which, in turn, are fastened to the side sill I1. The hanger secured to the door I2 adjacent the rear vertical edge thereof is the same as the hanger I4 described in the previous embodiment of the invention. However, a hanger 42 is utilized in the instant invention instead of the hanger I3 abovev described. The hanger 42 is secured adjacent the front vertical edge of the door and is provided with a plurality of rollers I5 disposed laterally relative to each other rather than longitudinally as in the door hanger I3. The rollers I5 provided in the hanger 42 are mounted upon a pin or shaft 43 and to increase the ease of rotation of said rollers roller bearings 44 disposed between the pin 43 and the hubs of the rollers may be utilized.

In order that the door may be rictionally supported upon the track in its closed position spaced 5 apertures 45 and 4B are formed in said track. The aperture 45 is of such size as to readily receive the laterally disposed rollers I5 while the aperture 4B is of such size as to receive the single roller provided in the rear door hanger. Dur- 5 ing the movement of the door 12 to its full open position it will be apparent from Figure 9 of the drawings and the relationship between the rollers I5 provided in the hanger 42 and the disposition of the apertures 45 and 46 provided in the track 40 that the outermost roller I5 will be supported upon the track at such time as the innermost roller is disposed above the aperture 46. Consequently, in the instant invention as well as in the embodiment of the invention heretofore de 0 scribed, even though the hangers are positioned within the vertical edges of the door and the apertures provided in the track are inwardly of the vertical margins of the door opening, the doors will have free unimpeded movement to full 5 open position and in such position will fully expose the door opening. Embossments 41 and 48 are provided in the track 40 adjacent the apertures 45 and 46 formed therein and are adapted for engagement with the upwardly extending flanges 49 provided on the hanger 42 and the upwardly extending flange 22 provided on the hanger I4 in order to guide the rollers into said apertures in the closed position of the door.

The embodiments of the invention heretofore described relate to sliding doors which, in their full open position, are supported by rollers upon the track. If it is desired that the door in its full open position as well as in its closed position be frictionally supported upon the track the embodiment of the invention illustrated in Figures 10 to 13, inclusive, of the drawings may be employed. In this embodiment of the invention the door I2 is provided with a plurality of spaced hangers 59 and 5! secured, respectively, within and adjacent the forward and rear vertical edges of the door. Each hanger is provided with a roller ill by means of which the door is adapted to have antifrictional movement upon a track 52 between closed and full open positions. The hanger 5% as will be manifest from Figure 12 of the drawings, is offset laterally with respect to the hanger 5| or, in other words, the roller l5 provided in the door hanger 59 extends outwardly away from the door to a greater extent than the roller i5 provided in the door hanger 5! so that said rollers are laterally offset relative to each other.

The door I? is adapted to be supported frictionally upon the track 52 in the closed position thereof so that the weight of said door may be taken from the rollers I5. To this end the track 52 is provided with spaced apertures disposed within the vertical margins of the door opening I I defined by the rear door post 3'5 and the front door post 53. These apertures 5 and 55, as more clearly shown in Figure 12 of the drawings, are laterally offset relative to each other to the same degree that the rollers l5 are ofiset with respect to each other so that said rollers will be received within said apertures in the closed position of the door. This disposal of he. rollers in said position of the door is aided by the ooopera tion between the embossments Bil and 51 provided on the track and the upstanding flanges 58 and 59 provided on the hangers 553 and 5!. In the closed position of the door, as shown in Figure 12 of the drawings, the substantially channel-shaped member 60 secured to the front margin of the door is adapted to cooperate with the angle stop member 5! to exclude entry of the weather around the front margin of the door while this object is attained by the engagement between the sealing strip 51-! secured to the rear margin of the door and the spark strip 553 secured to the rear door post 3?. The door construction above described may, as well, be utilized in the forms of the invention heretofore described.

By means of the starting and closing arrangement shown in Figure l of the drawings, longitudinal movement may be imparted to the door in order to position the rollers 55 upon the track and transfer the weight of the door from the track directly to said rollers. The door may then be moved upon the rollers to the full open position shown in Figure 13 of the drawings. This movement will be uninterrupted in view of the oifset relationship of the rollers l5 provided in the hangers 5B and iii permitting the roller 15 of the hanger 59 to pass the aperture 55 provided in the track 52 without dropping into said aperture. In its full open position the door is again supported frictionally upon the track For the attainment of this purpose the track 52 is provided with spaced apertures one of which is illustrated at s, these apertures being related to each other in the same manner as the track apertures 54 and 55 are related. Inasmuch as the roller l5 provided in the rear door hanger 5! is offset inwardly relative to the roller 55 providedin the hanger 5i; and to the aperture 6 3 provided in the door track it will be apparent that said former roller will pass the aperture ti l in the opening movement of the door without being received therein. Therefore, the door and hanger arrangement of the instant embodiment of the invention and the relationship thereof to the track and the apertures provided therein permits uninterrupted movement of said door upon the track between closed and full open positions and frictional support of said door upon the track in said positions. Moreover, in its full open position the door completely exposes the door opening H. Embossments 48 are preferably utilized to guide the rollers into their corresponding track apertures in the full open position of the door.

When the door of the last described embodiment of the invention is utilized means may be provided in order to position said door upon the rollers and out of frictional engagement with the track so that the door may move easily to closed position. A preferred form of such means is illustrated in Figure 11 of the draw'mgs. In this figure the door is illustrated in full open position where it engages a plurality of stops, one of which is illustrated at 635 secured to the door track 52. The stop 55 carries a lever 86 pivotally secured to said stop intermediate the ends of said lever. The lever is provided with a cam portion 61 lying in the path of opening movement of the door. In its inoperative position, as indicated in dot and dash lines in Figure 11, the lever is maintained in the desired position by means of the engagement of a lug 58 provided on the lever and the shoulder 69 formed on the stop 65.

It will be apparent that as the door approaches its full open position, the lever being in the position shown in dot and dash lines, the rear edge of the door will engage the lever at a point below its pivotal support upon the stop 65 and swing said lever to the position shown in full lines. The lever has thus, by the opening movement of the door, automatically assumed such position that the frictional support of the door upon the track. which has occurred in the opening movement of the door, may upon actuation ofv the lever be broken and a force imparted to the door by such actuation which will force the rollers out of the track apertures and transfer the weight of the door from the track directly upon the rollers. The door may then readily be moved to its closed position.

It is apparent that numerous changes and modifications in the details of the invention will be clear to those skilled in the art. It is intended, therefore, that all such modifications and changes he comprehended within this invention, which is to be limited only by the scope of the claims appended hereto.

I claim:

1. In combination, a door having the normal width corresponding to the door opening controlled by said door, a track, spaced rollers sccured to said door within and adjacent the vertical edges thereof adapted to support said door for antifrictional movement upon said track, spaced apertures or indentures provided in said track adapted to receive said rollers in the closed position of said door whereby said door is frictionally supported by said track, said door being capable of uninterrupted movement upon said track to full open position to completely expose the door opening controlled by said door.

2. In combination, a door having the normal width corresponding to the door opening controlled by said door, a track, spaced rollers secured to said door within and adjacent the vertical edges thereof adapted to support said door for antifri'ctional movement upon said track, spaced apertures or indentures provided in said track adapted to receive said rollers in the closed position of said door whereby said door is frictionally supported by said track, means carried by said door adapted to engage embossments provided on said track to guide said rollers into said apertures, whereby said apertures may be of minimum width, said door being capable of uninterrupted movement upon said track to full open position to completely expose the door opening controlled by said door.

3. In a railway house car having a door opening, in combination, a door for closing said opening, a plurality of rolling means secured to said door Within and adjacent to the forward vertical edge thereof, rolling means, one less in number than said first mentioned rolling means, secured Within and adjacent to the rear vertical edge of said door, a track for supporting said door for longitudinal movement upon said car, an aperture provided in said track adapted to receive said first mentioned rolling means and a spaced aperture provided in said track adapted to receive said second mentioned rolling means in the closed position of said door, said spaced aperture being incapable of receiving said first mentioned rolling means, whereby said door is frictionally supported upon said track and capable of unimpeded movement upon said track to full open position to completely expose said door opening.

4. In a railway house car having a door opening, in combination, a door for closing said opening, a plurality of longitudinally disposed rolling means secured to said door Within and adjacent to the forward vertical edge thereof, rolling means, one less in number than said first mentioned rolling means, secured within and adja cent to the rear vertical edge of said door, a track for supporting said door for longitudinal movement upon said car, an aperture provided in said track adapted to receive said first mentioned rolling means and a longitudinally aligned spaced aperture provided in said track adapted to receive said second mentioned rolling means in the closed position of said door, said spaced aperture being incapable of receiving said first mentioned rolling means, whereby said door is frictionally supported upon said track and capable of unimpeded movement upon said track to full open position to completely expose said door opening.

5. In a railway house car having a door opening, in combination, a door for closing said opening, a plurality of laterally disposed rolling means secured to said door within and adjacent to the forward vertical edge thereof, rolling means, one less in number than said first mentioned rolling means, secured within and adjacent to the rear vertical edge of said door, a track for supporting said door for longitudinal movement upon said car, an aperture provided in said track adapted to receive said first mentioned rolling means and a spaced aperture provided in said track adapted to receive said second mentioned rolling means in the closed position of said door, said spaced aperture being incapable of receiving said first mentioned rolling means whereby said door is frictionally supported upon said track and capable of unimpeded movement upon said track to full open position to completely expose said door opening.

6. In combination, in a railway freight car having a door opening, a door therefor having the normal width corresponding to the door opening controlled by said door, spaced rollers fixedly secured to said door against movement of translation relative thereto within and adjacent the vertical edges thereof, a stationary track carried by said car, said rollers supporting said door for uninterrupted antifrictional movement upon said track, said door being frictionally supported upon said track in closed and in full open positions and completely exposing said door opening in the latter position.

7. In combination, in a railway freight car having a door opening, a door thereforhaving the normal width corresponding to the door opening controlled by said door, spaced rollers secured to said door within and adjacent the vertical edges thereof, a track carried by said car, said rollers supporting said door for uninterrupted antifrictional movement upon said track, spaced apertures provided in said track adapted to receive said rollers in the full open and closed positions of said door whereby said door is frictionally supported upon the track, said door completely exposing the door opening in the former position thereof,

8. In combination, in a railway freight car having a door opening, a door therefor having the normal width corresponding to the door opening controlled by said door, spaced rollers secured to said door within and adjacent the vertical edges thereof, a track carried by said car, said rollers supporting said door for uninterrupted antifrictional movement upon said track, spaced apertures provided in said track adapted to receive said rollers in the full open and closed positions of said door whereby said door is frictionally supported upon the track, said door completely exposing the door opening in the former position thereof, and means carried by said door adapted to engage members provided on said track to guide said rollers into said apertures.

9. In combination, in a railway house car having a door opening, a door therefor, a roller secured to said door within and adjacent the rear vertical edge thereof, a roller secured to said door within and adjacent the forward vertical edge thereof, said rollers being offset laterally relative to each other, a track carried by said car, spaced correspondingly laterally oifset apertures provided in said track, said rollers and apertures being related whereby said rollers support said door for unimpeded movement upon said track between closed and full open positions, said door opening being fully exposed in the latter position of said door, said apertures receiving said rollers in said positions whereby said door is frictionally supported upon said track.

10. In combination, in a railway house car having a door opening, a door therefor, a roller secured to said door within and adjacent the rear vertical edge thereof, a roller secured to said door within and adjacent the forward vertical edge thereof, said rollers being offset laterally relative to each other, a track carried by said car, spaced correspondingly laterally oifset apertures provided in said track adapted to receive said rollers in the closed position of said door, said rollers supporting said door for uninterrupted movement upon said track to full open position to completely expose the door opening.

11. In combination, in a railway house car having a door opening, a door therefor, a roller secured to said door within and adjacent the rear vertical edge thereof, a roller secured to said door within and adjacent the forward vertical edge thereof, said rollers being offset laterally relative to each other, a track carried by said car, spaced correspondingly laterally olfset apertures provided in said track, said rollers and apertures being related whereby said roller supports said door for unimpeded movement upon said track between closed and full open positions, said door opening being fully exposed in the latter position of said door, said apertures receiving said rollers in said positions whereby said door is frictionally supported upon said track, and means carried by said door adapted to engage members provided on said track to guide said rollers into said apertures.

12. In combination, in a railway freight car having a door opening, a door therefor, spaced rollers secured to said door within and adjacent the vertical edges thereof, a track carried by said car, said rollers supporting said door for uninterrupted antifrictional movement upon said track, said door being frictionally supported upon said track in closed and in -iull open positions and completely exposing said door opening in the latter position, and means adapted to dispose said door upon said rollers for antifrictional movement upon said track to closed position, said means being actuated to operative position by the opening movement of said door.

13. In combination, in a railway house car having a door opening, a door therefor, a roller'secured to said door within and adjacent the rear ertioal edge thereof, a roller secured to said door within and adjacent the forward vertical edge thereof, said rollers being offset laterally relative to each other, a track carried by said car, spaced correspondingly laterally ofiset apertures provided in said track, said rollers and apertures being related whereby said roller supports said door for unimpeded movement upon said track between closed and full open positions, said door opening being fully exposed in the latter position of said door, said apertures receiving said rollers in said positions whereby said door is frictionally supported upon said track, and means pivotally supported upon said oar adapted to dispose said door upon said rollers for antifrictional movement to closed position, said means being actuated to operative position by said door in the opening movement thereof.

14. In a railway house car having a door open ing, in combination, a door for closing said opening, rolling means secured to said door within and adjacent to the forward vertical edge thereof, rolling means secured within and adjacent to the rear vertical edge of said door, a track for supporting said door for longitudinal movement upon said car, an aperture provided in said track adapted to receive said first mentioned rolling means and a spaced aperture provided in said track adapted to receive said second mentioned rolling means in the closed position of said door, said spaced aperture being incapable of receiving said first mentioned rolling means, whereby said door is frictionally supported upon said track and capable of unimpeded movement upon said track to full open position to completely expose said door opening.

15. In a railway house car having a door opening, in combination, a door for closing said opening, a plurality of rolling means secured to said door adjacent to the forward vertical margin thereof, rolling means, one less in number than said first mentioned rolling means, secured adjacent to the rear vertical edge of. said door, a track for supporting said door for longitudinal movement upon the car, an aperture provided in said track adapted to receive said first mentioned rolling means and a spaced aperture provided in said track adapted to receive said second mentioned rolling means but incapable of receiving said first mentioned rolling means in the closed position of said door, whereby said door is frictionally supported upon said track and capable of unimpeded movement upon said track to full open position to completely expose said door opening.

16. In combination, in a railway house car having a door opening, a door therefor, a roller secured to said door adjacent to the rear vertical edge thereof, a roller secured to said door adjacent to the forward vertical edge thereof, said rollers being oifeet laterally relative to each other, a track carried by said car, spaced corr spondingly laterally offset apertures provided in said track adapted to receive said rollers in the closed position of said door, said rollers supporting said door for uninterrupted movement upon said track to full open position to completely expose the door opening. THORVALD MADLAND.

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