US1755581A - Door-operating mechanism - Google Patents

Description

April 22, 1930. s. B. HASELTINEQW DOOR OPERATING MECHAN'I SM Original Filed June 25. 1926 2 Sheets-Sheet l April 1930- s. B. HASELTINE 1,755,581

I DOOR OPERATING MECHANISM I Original Filed June 25, 1926 2 Sheets-Sheet 2 dzgwxw 4 4 4 fave/2:221 m g 6 sa a/1456mm Patented Apr. 22, 1930 uNrrEio STATES PATENT OFFICE STACY B. HASELTINE, OF CHICAGO, ILLINOIS, ASSIGNOR T0 W. II. MINER INC, CHICAGO, ILLINOIS, A CORPORATION OF DELAWARE DOOR-OPERATING MECHANISM Application filed June 25, 1926, Serial No. 118,448. Renewed September 26, 1929.

the doors and the door frame. The doors 11 h This invention relates to door operating mechanisms.

' One object of the invention is to provide a simple and eflicient door operating mecha nism for forcing the'door when partly closed to tightly closed position, for holding the door closed, and for forcing thesame in an opening direction to facilitate the complete opening thereof. 1

Another object of theinvention is to provide a door operating mechanism especially adapted for the pivoted doors of refrigerator cars, including a single operating bar movably mounted upon one of the doors, the ends of said bar being arranged to project beyond the top and bottom edges of the door, means being provided for effecting vertical, reciprocal movement of said bar together with simultaneous travel of said bar in a direction substantially parallel at all times to its. original position, in conjunction with keeper means secured to the door frame and cooperating with said bar to effect movements of said door in opening and closing directions when said bar is operated.

Other and further objects of the invention will more clearly appear from the description and claims hereinafter following.

In the drawings forming a part of this specification, Fig. 1 is a side elevational view of a portion of a refrigerator car showingv my improvements in connection therewith. Fig. 2 is a vertical, sectional view, on an enlarged scale, partly broken away, corresponding substantially to the line 22 of Fig. 1, showing the position of the parts of the mechanism when the door is tightly closed. And'Fig. 3 is a horizontal, sectional view on an enlarged scale of the lower end of the operating mechanism taken on the line 3-3 of Fig. 1, and showing the same in engagement with the lower keeper shown in top plan, the door in partly opened position being indicated in dotted lines.

Referring to the drawings. the side of the car is shown as provided with a door frame 10 and two pivoted doors 11 and 12. The doors have the usual beveled meeting edges, and the customary insulation is employed between the free edges of the doors and between and 12 are mounted for swinging movement about vertical axes, being supported by swinging hinges 1313.

The door operating mechanism comprises broadly an operating bar A actuating mechanism B; and keepers C C.

The operating bar A preferably is in the form of a flat elongated member substantially rectangular in cross section, and of a length somewhat greater than the vertical height of the door 12, the opposite ends of the bar A each havingbeveled portions 14r14 to adaptthe ends of the bar for cooperation with the keepers OC hereinafter referred to. V

The bar A is mounted upon the door 12-adjacent the forward edge thereof, for combined vertical reciprocation, and lateral travel substantially parallel to itself by the following mechanism. The door 12 is provided adjacent its upper left hand corner witha guide bracket 15, which is of one-piece construction, suitably secured to the door 12 by belts or the like, and providing innerand outer walls 16 and 17 connected at their opposite ends to form a guideway for the upper end of thebar A. Pivotally mounted at one end upon the wall 17 is a link 18, the lower end of said link being pivotally connected with the bar A at thepoint indicated at 19, said link being adapted to have the major portion of its movement from the forward edge thereof inwardly toward the hinged edge of the door as best shown in Fig. 1.

Mounted adjacent the lower lef-t hand corner of the door 12 is a guide bracket 20 of onepiece construction having inner and outer walls 21 and 22. connected at their ends and forming a guideway of limited extent for the lower end of the bar A. Pivotally connected to the outer wall 22 is the elbow of a bell crank lever as indicated at 23, the crank portion of said lever normally extending downwardly and being pivotally connected with the bar A as indicated at 24, said crank portion being somewhat shorter than the link 18. The lever is provided with a handle 25 by means of which the lever may be swung about the pivot 23, and movement of said lever in a counter-clockwise direction is limited by a shoulder formed on the lever adapted to come into contact with the wall of the guide bracket. Pivotally hung upon the lever is a latch 26, said latch being arranged to ride over a shoulder 27 formed upon the outer wall 22 of the lower guide bracket when the bar A is elevated. Said latch is provided with an opening 260 adapted to register with an opening in a lug 261 formed upon the lower guide bracket, said openings being adapted for the reception of a padlock and seal.

The keeper means 0-0 are two in numher, one of the same being adapted to cooperate with the upper end of the operating bar A, and the other being arranged to coact with the lower end of said operating bar. The lower keeper C is provided with upstanding walls 2828 which extend in parallel planes angularly toward the left hand door, thus defining a cam slot 29, having an entrance 30 opening inwardly from the free edge of the door 12, said cam slot being adapted for the reception of the lower end of the operating bar A. The forward portion of the lower keeper C is provided with a pivoted latch 31 adapted to be turned against a wear plate 32 secured to the lower right hand corner of the door 11, the latch 31 serving in one position to hold the door 11 closed. The upper keeper C, with the exception of the latch 31 is identically similar to the lower keeper C, and therefore similar reference characters gvilibe utilized to designate similar parts of In operation, assuming the doors to be closed, as shown in full lines in Fig. 1, and that itris desired to open said doors, after first assuring that latch 31 is in the position shown in Fig. 1, thelatch '26 is freed and the handle portion of the lever 25 swung in a counter-clockwise direction about the pivotal point 23 thereof, which brings about arcuate movement of the crank portion 20 at the point of its pivotal connection with the bar A. Such movement effects combined eleva tion and lateral movement of the lower end of the bar A. Corresponding movement of the upper end of the bar is brought about through the swinging movement of the link 18 about its pivot, so that when the lever 25 is actuated the bar A travels vertically and at the same time moves laterally andalways substantiallyparallel to its original position away from the free edge of the door, causing traverse of the cam slots of the keepers C@ to effect the required opening movement of the door, during which movement the bar A has its lower end elevated to a point within the confines of the door 12 where the same will not interfere with the usual loading platforms. The bar A is held in elevated position by means of the latch 26 which has traveled upwardly with the lever 25 and ridden over and dropped behind the shoulder 27 on the lower guide bracket, thereby preventing descent of the bar A. After the door 12 has been swung to fully opened position, the latch 31 may be swung to inoperative position permitting the door 11 to be opened.

hen it is desired to close said doors, the door 11 is first swung nearly closed, after which the door 12 is swung in a closing direction so as to place the ends of the bar A so that they are in position to enter the cam slots ot'the keeper. The latch 26 is then disengaged, and the lever 25 swung in a clockwise direction, which effects downward movement of the bar A and simultaneous travel lateral- 1y substantially parallel to itself toward the free edge of the door, causing traverse of thccam surfaces of the keepers and closing movement of the door. The latch 26 may be then again secured to the lock 261. After the door 11 is closed, the latch. 31 may be turned into operative position to hold the same closed while right hand'door 12 is being opened.

While I have herein shown and described what I now consider the preferred manner of carrying out the invention, the same is merely illustrative, and I contemplate all changes and modifications that come Within the scope of the claims appended hereto.

1 claim 5 1. In a door operating mechanism, the combination with a door frame and a pivoted door; of a single operating bar; means for movably mounting said operating bar on the door. said means serving to confine said bar against rotation; means for effecting combined longitudinal reciprocation of said bar and lateral travel of said bar and keeper means coacting with the opposite ends of said operating bar to eitect opening and closing movements or" said door upon actuation of said member.

2. In a door operating mechanism, the combination with a door frame and a pivoted door; of a unitary operating bar; means for movably mounting said operating bar on the door, said means serving to confine the bar against rotation about the longitudinal axis; operating means for effecting combined reciprocation and lateral travel of one end of said bar; means associated with the opposite end of said bar and arranged to be actuated by movement of said bar to effect movement of said end corresponding to the movement of said first end; and keeper means cooperating with the opposite ends of said operatbar and arranged to effect opening and closing movements of said door upon actuation thereof.

In a door operating mechanism, the combination with a door frame and a pivoted door; of an operating; member; means for movably mounting saidoperating member on said door; means for effecting combined longitudinal reciprocation of said member and lateral travel of said member substantially parallel to itself; keeper means coacting with said operating member toeffect opening and closing movements of said door upon actuation of said member; and means carried by said mounting means and said operating member for locking said member when moved in one direction to position one endportion of said member at a point within the confines of said door. 7

4. In a door operating mechanism, the combination with a door frame and a pivoted door; of an 1 operating member movably mounted on said door; a bell crank lever pivotally supported upon said door and having a crank connected to said member; a link pivotally supported by said'door and pivotally connected to said member at a point spaced from said crank; and keeper means adapted to coact with said'operating member to effect opening and closing movement of said door.

5. In a door operating mechanism, the combination with a door frame and a pivoted door; of an operating member movably mounted on said door; a bell crank lever pivotally supported upon said door and having a crank connected to said member adjacent one end thereof; a link pivotally supported by said door adjacent the opposite end of said member and pivotally connected to said member; keeper means adapted to coact with said operating member to effect opening and closing movements of said door; and a pivoted latch mounted on said bell crank lever and operating to prevent downward movement of said member and to position the lower portion of said bar at a point within the lower edge of said door.

6. In a door operating mechanism, the combination with a door frame and a pivoted door; of an operating member movably mounted onrsaid door; a bell crank lever pivotally supported upon said door and having a crank connected to said member adjacent one end thereof; a link pivotally supported by said door adjacent the opposite end of said member and pivotally connected to said member; keeper means adapted to coact with said operating member to effect opening and closing movements of said door; and means for locking said operating member at the limitsof its movement in opposite directions.

In witness that I claim the foregoing I have hereunto subscribed my name this 16th day of June, 1926.

' STACY B. HASELTINE.

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