US2676046A - Stop means for rotary door fasteners - Google Patents

Description

April 20, 1954 v. s. DANIELSON 2,676,046

STOP MEANS FOR ROTARY DOOR FASTENERS Filed Nov. 22 1950 2 Sheets-Sheet l qTlllm jnvegl or: Vernon 8.17%5'021.

April 20, 1954 v. s. DANIELSON 2,676,046

STOP MEANS FOR ROTARY DOOR FASTENERS Filed Nov. 22, 1950 2 Sheets-Sheet 2 [n7 'e72/01 Vernon S.Dp/nid 0n.

Patented Apr. 1954 STOP MEANS FOR ROTARY DOOR FASTENERS Vernon S. Danielson, Bolton, 111., assignor to W. H. Miner, Inc., Chicago, 111., a corporation of Delaware Application November 22, 1950, SerialNo. 197,021

2 Claims.

This invention relates to improvements in rotary operating bar door fasteners for hinged doors, and more particularly to stop means for limiting rotation of the operating bar.

One object of the invention is to provide in a door fastener comprising a rotary operating bar having keeper engaging crank members thereon, cooperating with keepers, operated by a lever on the bar, simple and efiicient stop means for arresting rotation of the bar to hold the lever in spaced relation to the outer side of the door to prevent marring of the door by contact of the lever therewith, or preventing injury to the operators hand by striking against the outer side of the door when the fastener is actuated to its unlocked position.

A further object of the invention is to provide a mechanism as set forth in the preceding paragraph, wherein the operating bar is rotatably supported by bearing brackets comprising back and cover plates embracing the bar, wherein the bar and one of said plates are provided with cooperating shoulders forming the stop means for limiting rotation of the bar, the stop shoulder on said plate being in the form of a projecting bearing member for said bar.

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

In the accompanying drawings forming a part of this specification, Figure 1 is a broken front elevational view of a wall provided with a door opening, and a pair of hinged doors for closing said opening, illustrating my improved operating mechanism in connection therewith. Figure 2 is an enlarged view, partly broken away, of a portion of the right hand door shown in Figure 1, together with the improved operating mechanism. Figure 3 is a front elevational view of the lower supporting bearing bracket for the operating bar, showing a portion of the operating bar, broken away. Figure 4 is a horizontal sectional view, corresponding substantially to the line 4-4 of Figure 3. v Figure 5 isa view similar to Figured, showing the operating bar rotated through an angle of slightly less than 180 degrees, from the position shown in Figure 4.

In said drawings, I0 designates the side wall member of a refrigerator car having the usual door opening ll therein, which is closed by a pair of hinged doors l2 and I3. Each door is supported by the usual sets of hinges I l-l4 along the vertical outer edges thereof, by which the door is swingingly supported. The door I2, which is that first closed, and the door l3 have brackets DD, which-are located on meeting edges which are beveled and so inclined that the door l3 will maintain the door I2 in closed position and wedge the same shut when the door operating mechanism is actuated. The edges of the doors and the cooperating edges of the door frame are provided with the usual insulating packing material, not shown.

My improved mechanism proper comprises broadly a rotary operating bar A having keeper engaging crank means B-B at its top and bottom ends, said bar being provided with stop lugs, an operating handle lever C, two-part guide or hearing brackets DD for supporting the operating bar, one part of each bracket having a shoulder thereon cooperating with the corresponding stop lug of the operating bar, and a pair of keepers E--E with which the crank means cooperate.

The main body portion of the operating bar A is in the form of a hollow, tubular member flattened between its ends, as indicated at E5, to accommodate the lever C, and the keeper engaging crank means B-B of said bar comprise a pair of castings which are riveted to said tubular main body portion. The castings forming the crank means BB are secured, respectively, to the upper and lower ends of the bar. These castings are of similar design, but reversely arranged end for end. Each crank means B comprises a vertically disposed shaft portion i6,

which is journaled in the corresponding bracket D. The shaft portion I6 is provided with a projecting inner end section 11, which is telescoped within and fixedly secured to the corresponding end of the main body portion of the bar for rotation in unison with said bar. At the outer end, each shaft portion IB is formed with the usual crank l8, which cooperates with the corresponding keeper E. Between its ends, the shaft portion [6 of each crank means B is provided with an enlargement, forming a laterally projecting stop lug l9, presenting a flat abutment face 20 atone side thereof, adapted to have shouldered engagement-with a portion of the corresponding two-part bracket D to limit rotation of the operating bar in door opening direction.

As shown in Figures 1 and 2, the operating bar A is vertically disposed and the guide or bearing 7 v r the door 43 at the upper and lower ends thereof, are employed to rotatably support the bar on said door. The brackets DD are secured to the door 13 by bolts 2I-2l, or any other suitable securing elements.

The keepers EE are of well-known design and need no further description, it being merely pointed out that the same are provided with the usual cam slots 22-22 within which the crank members engage to force the door 13 open or closed.

The operating bar A is rotated by the handle lever C, which is pivoted thereto, as indicated at 23, to swing in a vertical plane, and may be locked to hold the door closed by any well-known means, indicated by 24.

The bearing brackets D-D, which support the bar A, are of similar design, each bracket comprising two parts, 25 and 26. The part 25, which forms the cover plate of the bracket D, is in the form of a strap having a partly cylindrical, central portion 21, provided with laterally extending ears 2828 on opposite sides thereof. The ears 28-28 are perforated, as indicated at 2929, to receive the securing bolts 2l2l. The strap 25 of each bearing bracket D overlies the part 25, which is in the form of a flat plate and forms the back plate of the bracket. As will be seen upon reference to Figures 3, 4, and 5, the strap 25 is provided with inwardly directed edge flanges 30 at the top, bottom, and opposite side edges thereof, which overhang the top, bottom and side edges of the platelike portion of the part The part 26, or back plate, has an outwardly or forwardly offset, central bearing projection 32 thereon, provided with a concavely curved bearing surface 32 engaging the rear side of the shaft portion I6 of the corresponding crank means 33 of the bar A, The projection 3| is opposed to the cylindrical portion 21 of the'part 25 of the bearing bracket, as clearly seen in Figures 4 and 5. The inner side of the cylindricalportion 2'! of the part 25 presents top and bottom bearing surfaces 33-33 opposed to the bearing surface 32 and engaging with the outer side of the shaft portion It of the corresponding crank means B. Between the top and bottom surfaces 3333, the cylindrical portion 21 of the part 25 is bowed or bulged outwardly to provide an interior channel 34 adapted to accommodate the lug 19 on the shaft portion 16. The plate portion of the part 26 is notched at opposite sides at'the top corners thereof, as indicated at 35-35, to accommodate the bolts 2 l-2 l, as shown in Figure 3.

As clearly shown in Figures 4 and 5, the'bearing projection 3| of the part 26 lies in the path of rotation of the lug IQ of the shaft portion H5, as shown in Figure 5, and is engageable by said lug to stop rotation of the bar A with the lever C thereof in the dotted line position shown in Figure 5, and the lug i9 engaging the right hand side of said bearing projection-3|.

In Figure 1, the doors are shown in locked and closed position, the keeper engaging crank means B-B of the operating bar A being in engagement with the keepers E-E, and the operating handle lever C being in the dotted line position shown in Figure 4 and locked against rotation by the latch means 25, as well-known in this art, and as shown in said Figure 1. To open the doors, the operating handle lever C is unlatched and swung from the position shown in Figure 1 to the right and inwardly toward the door 13, that is, the lever C is swung from the dotted line position shown in Figure 4 toward the dotted line posi- 4 tion shown in Figure 5, thereby rotating the bar A and, through the camming action of the crank means B-B, forcing the door open. This swinging movement of the operating handle lever C is positively arrested before the same reaches a position where it would engage the door l3 by the stop lug H) of the bar A coming into engagement with the bearing projection 3i of the bracket D. The operating lever C is thus held clear of the door l3 and marring of the finished surface of the latter is positively prevented. This stop means also performs in the manner of a safety device, preventing the attendant from injuring his hand, which might otherwise occur, by the same being caught between the handle of the lever C and the door.

I claim:

1. In a fastener for a hinged door, comprising a vertically extending, rotary operating bar mounted on the door and having keeper engaging means cooperating with fixed keepers, :saicl bar being of circular transverse cross section, the combination with a laterally outwardly projecting, radial stop lug-on said bar; of a two-part bearing bracket in which said bar is rotatably mounted, said two-part bracket comprising a back plate member and a strap member overlying said plate member, said strap member and plate member embracing the bar from opposite sides and housing said projecting stop lug of said bar, one of said members having an interior, vertically extending, lateral blocklike bearing projection having a transversely curved bearing face engaged by the corresponding side of said bar, said block-like bearing projection lying in the path of rotary movement of said lug to be engaged thereby and limit rotation of said bar.

2. In a fastener for a hinged door, comprising a vertically extending rotary operating bar of circular cross section mounted on the door and having keeper engaging means cooperating with fixed keepers, the combination with a-laterally, outwardly projecting, radial stop lug onsaid bar; of a two-part bearing bracket inwhich said bar is rotatably m0unted,'said two-part bracket comprising a back plate and a strap overlying said plate, said strap and plate embracing the bar from opposite sides, and housing said stop lug of said bar therebetween, said plate having a blocklike bearing projection thereon presenting vertically extending flat side faces and a vertically extending, transversely concave 'front bearing surface, said front bearing surface engaging said bar on the corresponding side thereof, said blocklike projection being disposed with one of its flat side faces in the path of rotation .of said lug to be engaged thereby for arresting rotary movement of said bar.

References Cited in the file of this patent UNITED STATES PATENTS Williams ay 31,1949

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