US1720125A - Door-operating mechanism for refrigerator cars - Google Patents

Description

, y 9, 1929- s. B. HASELTINE noon OPERATING MECHANISM FOR REFRIGERATOR CARS 2 Sheets-Sheet l Filed Jan. ;6

1929. s. 5-3A5ELT1NE DQOR OPERATING MECHANISM FOR R Filed Jan l6 Patented July 9, 1929. i

UNITED STATES PATENT OFFICE.

STACY ,B. HASELTINE, OF CHICAGO, ILLINOIS, .ASSIGNOR TO W. H. MINER, INC., OF CHICAGO, ILLINOIS, A CORPORATION OF DELAWARE.

DOOR-OPERATING MECHANISM FOR REFRIGERATOR CARS.

Application filed January 16, 1926.

This invention relates to improvements in door operating mechanism for refrigerator cars.

An object of the invention is to provide a door operating mechanism for refrigerator cars of simple design, wherein the shaft of the operating mechanism is given a rolling movement parallel to the face of the door, and wherein the ends of the shaft have actuating portions offset with respect to the axis of the shaft, which actuating portions cooperate wit-h keepers on the car to effect movement of the door in opening and closing directions.

Other objects and advantages 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 elevation of a por tion of a refrigerator car showing the doors thereof and my improvements in connection therewith. Fig. 2 is a broken Vertical sectional view of the invention substantially on line 2-2 of Fig. 1, showing parts of the mechanism in side elevation and parts in cross-section. Fig. 3 is a horizontal, sectional view on an enlarged scale, taken on the line 33 of Fig. 1. And Fig. 1 is a horizontal, sectional view on an enlarged scale taken on the line ll of Fig. 2, showing the lower door keeper in elevation with the operating shaft partially in section, and indicating in dotted lines the position of the operating shaft and door when the same is at the limit of the opening operation.

In the drawings, 10 and 11 designate hinged refrigerator our doors, said doors being provided with beveled meeting edges, as indicated at 12, in the usual manner, and suitable packings are provided on said meeting edges and also around the outer edges of the doors and door frame. The doors 10 and 11 are swingably supported on the usual hinge members 1313. As is customary, the operating shaft is mounted on the last door to be closedthat is, the door 11 in the structure as shown. Vhcn the door 10 has been finally closed it may be secured by the usual latch 12.

The improved door operating mechanism comprises broadly, a shaft A; a pivoted operating handle B; a pair of guide brackets CC; a pair of actuating elements D-D; and a pair of keepers E-E.

The operating shaft A, as shown, comprises an intermediate connecting member 14.,

Serial No. 81,619.

which, in the present invention, is made up of a section of pipe of suitable diameter, the pipe section being compressed adjacent the lower end to provide a flat portion 15, upon which is pivotally mounted the forked end 16 of the usual handle B, the rivet 17 being utilized to pivotally secure the forked portions of the handle end to the flat port-ion 15. The opposite ends of the shaft A are provided with end members 1818, which are similar in construction, and a detailed description of the construction of one will sutfice for both, similar reference characters being utilized to designate like parts. Each end member 18 preferably is of composite construction and includes a hollow mutilated gear 19, provided with a sleeve 20, and preferably cast within the gear 19 and sleeve 20, is the intermediate portion 21 of the operating element, the portion 21 being provided with an abutment 22 against which the inner end of the sleeve 20 bears. Inwardly of said abutting portion is a collar 23, and inwardly of said collar is a shank 2 1, said shank fitting within the end of the pipe section and being secured therein by rivets 25, the collar 23 bearing against the edges of the pipe section, and in the case of the lower end of the shaft, resting against the guide bracket G to support the shaft. The outer end of the operating member is pro vided with the actuating element D, including the crank arm 26, and projecting pin 27 which is adapted to cooperate with the related keeper E in a manner hereinafter more fully described.

The opposite ends of the shaft A extend through the guide brackets C-C, which are mounted adjacent the upper and lower edges of the door 11. Each of said brackets comprises an inner wall 28 secured to the door face by a plurality of bolts 29, the heads of said bolts being disposed in recesses 30 in the outer face of said inner wall. Side walls 31 are provided, and spaced from the inner wall 28, and offset with respect to said inner wall and connecting said side walls, is an outer wall 32. The inner face of the outer wall 32 is provided with a rack 33 adapted to cooperate with the teeth of the mutilated gear 19, as best shown in Figure 3.

The keepers E-E are secured to the door frame in line with the operating shaft, each keeper having webs 34 through which the securing bolts are extended. Each keeper E presided with. a. recess 35, walls 36 of said recess for the major portion thereof position, the shaft and crank pins 27 are being disposed in substantially parallel realined substantially at right angles to the lation with the face of the door frame, and face of the door, which all'ords a much better with each other, said walls being thereafter lock than that provided in constructions curved outwardly, as indicated at 37, and where the crank and shaft are offset when at their extremities providing an opening 88 in locked. position, this arrangement being for the entrance of the pin 27 of the actupermitted by the combinedmovable shaft and ating member D to the recess in the keeper. the crank means thereon. Another impor- The operation of my improved door optant feature of the invention resides in placing crating mechanism is as follows, assuming the racks, which cooperate with the gears on the parts to be in the position shown in Fig. the shaft to etfect translation thereof, upon 1. In opening the door the shaft A is rotated 'he inner surfaces of the outer walls of the b moving th handle B counter-clockwise guide brackets, as this effects a more rapid away from the door 10. Due to meshing of and e'liicient engagen'ient, and disengagement, the gears 19 with the racks 33, the shaft A of the pins 27 with the keepers, as it will be will roll along the surface of the door in a appreciated that the pins 27 tend to rollover direction toward the left and through a plane he keeper walls during a closing operation, parallel with the face thereof. During this rather than sliding thereon. movement of the shaft, th crank arms 26 lVhile I have herein shown and described and pins 27 will be rotated about the axis what I now consider the preferred manner of the body portion of the shaft A, the pins of arrying out the invention, the same is 27 bearing upon the inner straight walls 36 merely illustrative, and I contemplate all of the keepers EE to force the door outchanges and modifications that come within wardly, such movement continuing until the he cope of he claims appended hereto. shaft has moved to a point beyond the I claim: straight portions 36, when the pins 27 will 1. In a device of the character described, bear upon the inner curved walls 37 of the the combination with a member having a keepers, the translation of the shaft due to door opening and a hinged door; of means meshing of the gears 19 with the racks 83, and for opening and closing said door, including the rotation of the cranks, being continued a rotary shaft having crank means which is until the parts are in the position indicated provided with an actuating portion offset in dotted lines in Fig. 4, whereupon the door with respect to said shaft; keepers on said may be swung freely to open position. Upon member adapted to be engaged by said offset swinging the handle in the reverse direction, portions to effect opening and closing movethe shaft A will be rotated in the opposite diment of said door; guide brackets mounted rection to that heretofore described, and efon the door adjacent the ends of said shaft feet a rolling movement of the shaft and r and cooperating therewith; and rack and tation of the cranks in a reverse direction to gear connections between said shaft and said that which they had during the door opening brackets for causing rolling movement of operation. At the inception of the door clossaid shaft, said gear being disposed between ing operation, it will be noted that due to the rack and the door. placing the racks 33 upon the inner faces of 2. I11 a device of the character described, the outer walls of the brackets, that the dithe combination with a member having a rection of rotation of the pins 27 is substandoor opening and a'hinged door; of means tially in the direction of travel of the shaft for opening and closing said door; including toward the right, as viewed in Fi g. 1, so that a rotary shaft having crank means, each of the pins 27 are quickly moved into engagewhich is provided with an actuating portion ment with the openings 88 of the keeper. offset with respect to said shaft; keepers on Continued movement of the pins 27 will cause said member adapted to be engaged by said the same to bear upon the outer walls 36, ollset portions to effect opening and closing causing the door to be forced inwardly. This movement of said door; guide brackets action will continue until the shaft and mounted on the door adjacent the ends of said cranks have assumed the position shown in shaft, each of said brackets including an full lines in Fig. 1, when the door will be inner wall secured to the door and an outer tightly closed. wall provided with a rack; and a gear on said It will be observed that the above do shaft located adjacent each bracket and scribed arrangement permits the use of'ktaepadapted to engage with the rack thereon. ers which have walls disposed parallel with 3. As an article of manufacture, a hollow the face of the door, and hence affords a lockdoor operating shaft in the form of a pipe 111g surface which prevents undesirable section, said shaft having operating end pormovement ordinarily occurring in constructions thereon, each of which comprises a holt-ions where the engaging faces of the keepers low gear member and an operating element are inclined outwardly with respect to the lixed within said gear member and having a door frame. It also should be noted that shank at one end, said shank being disposed when the shaft and cranks are in fully closed in the hollow end of said shaft and fixed thereto, and the other end of said operating member comprising an actuating portion, said gears being adapted to coact with brackets on a car door, and said actuating portions being adapted to coact with keepers on the door frame.

4. In a door operating mechanism, the combination with a member having a door opening and a pivoted door; of keeper means mounted on said member, said keeper means having an entrance adjacent the free edge of said door, and having engaging surfaces BX tending inwardly from the free edge of said door when closed; a shaft mounted on said door and provided with eccentric means adapted to engage said keeper means to effect opening and closing movement of the door, said shaft being provided with a handle adapted to be swung radially to rotate said shaft; and means for effecting bodily movement of said shaft upon rotation thereof, said means operating to cause travel of said shaft toward the free edge of the door when said shaft is rotated in a counter-clockwise direction, and to cause travel of said shaft in the reverse direction upon movement in a clockwise direction.

5. In a door operating mechanism, the combination with a member having a door opening and a pivoted door; of keeper means mounted on said member, said keeper means having an entrance adjacent the free edge of said door, and having engaging surfaces extending inwardly from the free edge of said door when closed; a shaft mounted on said door and provided with eccentric means adapted to engage said keeper means to effect opening and closing movement of the door, said shaft being provided with a handle adapted to be swung radially to rotate said shaft; and means for effecting bodily movement of said shaft upon rotation thereof, said means operating to cause travel of said shaft toward the free edge of the door when said shaft is rotated in a counter-clockwise direction, and to cause travel of said shaft in the.

reverse direction upon movement in a clockwise direction, said means comprising guide brackets having racks spaced from the face of the door and disposed outwardly of the shaft, said shaft having gears adapted to cooperate with said racks to effect the bodily movement ofsaid shaft.

6. In adevice of the character described, the combination with a member having a door opening and a hinged door; of operating means for opening and closing said door, including a rotary shaft mounted on said door and having a crank member fixed thereto, and provided with an off-set actuating port-ion thereon; keeper means having an engaging face disposed substantially parallel with the face of said member and adapted to be engaged by said actuating portion; and means co-operating with said shaft to effect simultaneous bodily shifting and rotation of said shaft and actuating portion with respect to said keeper during closing of said door so as to align the axes of said actuating portion and said shaft in a plane substantially perpendicular to the engaging face of said keeper means, when the door is closed.

7. In a door operating mechanism of the. character described, the combination with a member having a door opening and a hinged door; of means for opening and closing said door, including a rotary shaft having an angular arm portion and an actuating portion on said arm olf-set with respect to said shaft, said actuating portion being free to have swinging movement; eo-acting means on said shaft and door for simultaneously effecting bodily travel of said shaft along the face of said door and rotation of said shaft; and keeper means secured to said member and adapted to be engaged by the actuating portion on said angular arm.

In witness that I claim the foregoing I have hereunto subscribed my name this 7th day of January, 1926.

STACY B. HASELTINE.

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