US2779967A - Hinge assembly - Google Patents

Description

Feb. 5, 1957 A. J. BRAUN HINGE ASSEMBLY Filed March lO, 1951 IN VEN TOR. @am

United States Patent O 2,779,967 HINGE ASSEMBLY August John Braun, Chicago, lll.

Application March 10, 1951, Serial No. 214,981

2 Claims. (Cl. 16-163) This invention relates to improvements in a hinge assembly.

It is an important object of this invention to provide a hinge assembly of type which is concealed from view when the parts to which the hinge assembly is applied are in closed position relative to the stationary structure on which said parts have swinging movement.

It is a further object to provide such a hinge assembly which is operative to maintain the swinging part in either limit position of movement.

It is a still further object to provide a device of this character which is adapted for many purposes and at the same time very strong and durable, and simple and economical both in the matter of material and assembly.

Further objects pertaining to details and economies of this invention will appear from the description to follow.

A hinge assembly embodying the features of this invention is clearly illustrated in the accompanying drawing, in which:

Fig. 1 is a fragmentary elevation of the hinge assembly as it would appear when viewed in a direction edgewise of a door when the latter is held in closed position under control of the hinge assembly.

Fig. 2 is a similar view as the device would appear when the door is in open position.

Fig. 3 is a transverse sectional View taken on line 3--3 of Fig. 1.

Fig. 4 is a similar view taken on line 4-4 of Fig. 2.

A hinge assembly embodying the features of the present invention is shown herein as applied to a door and a stationary wall part on which the door is supported for swinging movement toward and away from a closed position.

Referring more particularly to the drawing, represents such a stationary wall part having an edge portion 11 adapted to be overlapped by the lip of a door 12. Secured to the wall part 10 by means of suitable fastening means such as a screw 13 is a base plate 14. A shaft or pin mounted along the edge of the base plate 14 parallel to the edge portion 11 of the stationary wall part 10 provides a pivot to be referred to hereinafter. The plate 14 at its edge directly opposite the pivot pin 15 is bent angularly to the plate to provide an extension 16 which is bent angularly inwardly at its outer end to provide an arm 17 in spaced opposed relation to the plate 14.

The door 12 is supported for swinging movement about the pivot pin 1S by means of a lever comprising a plate bent to provide an arm or inner section 18, a second arm or intermediate section 19 which diverges from the inner section 18, and a third arm or outer section 20. The door 12 is mounted on the outer section 20 by suitable fastening means such as a screw 21. It will be observed that the inner section 18 is of such radial length as to clear the arm 17 on the base plate 14 when the lever is swung about the pivot pin 1S toward the eXtension 16 of the base plate 14 as shown in Fig. 3. It will also be observed from Fig. 4 that the intermediate CFI 2,779,967 rammed Feb. 5, 1957 "ice section 19 of the lever is arranged at: a distance suiciently away from the pivot pin 15 to accommodate swinging motion of the door 12 mounted on the outer section 20 of the lever into a position in excess of 90 degrees away from the closed position shown in Fig. 3.

As shown in Fig. 2, as well as Fig. l, the inner section 18 and the intermediate section 19 ot the lever is notched approximately centrally of its radial edges, which notch presents a transverse edge portion 22 in spaced parallel relation to the pivot pin 15 near the end of the inner section 18 at said pivot pin. This edge portion 22 is divided midway of its length to provide a pair of beads curled in the direction away from the portion of the lever extending therefrom, which beads form bearings for a pivot pin 23.

A bolt 24 having an eye or loop 25 at one end thereof, which eye is penetrated by the pivot pin 23, and having a threaded portion at its opposite end, as at 26, which threaded end projects through an opening 27 in the arm 17 of the plate 14 substantially directly opposite the pivot pin 15, provides a link connecting the lever with the arm 17 of the plate 14. The threaded end 26 of the bolt 24 is equipped with a suitable nut 28 which engages the outer surface of the arm 17 about the opening 27 to adjustably limit the swinging movement of the lever about the pivot 15 in the direction of the outer section of the lever. As will be noted from Fig. 3, the inwardly facing surface of the extension 16 of the base plate 14, presents a suitable stop for limiting the swinging movement of the lever in a direction away from the outer section of the lever.

In connection with movement of the door 12 between the closed position shown in Fig. 3 and the open position shown in Fig. 4, the inner section 18 of the lever is operated to shift the pivot pin 23 through a dead center position defined by a plane radially of the pivot pin 15 and coincident with the longitudinal axis of the bolt 24 where the latter engages the edges of the opening 27 in the arm 17. A coil spring 29 surrounding the portion of the bolt between the lever and the arrn 17, and acting between the pivot pin 23 and the surface of the arm 17 about the bolt receiving opening 27, accordingly is adapted to yieldably force the inner section 18 of the lever away from said dead center position of the pivot pin 23 and toward the limit position of movement of the inner section 18 of the lever in the direction in which the pivot pin 23 is located away from said dead center position. Thus the spring 29 acts to force the lever toward a position to maintain the door 12 in open position when the pivot pin 23 is away from dead center position in the direction of the door 12 as in Fig. 4 whereas the spring forces the lever toward a position to maintain the door closed when the pivot pin 23 is away from dead center position in a direction away from the door 12 as in Fig. 3.

To eliminate binding action between the inner surface of the arm 17 about the bolt receiving opening 27, incident to movement of the bolt in said opening, and the spring portion engageable therewith, the surface about the opening is preferably domed as at 36.

l claim:

l. A hinge assembly comprising in combination a base plate having pivoting means along one edge thereof and an extension projecting angularly from its opposite edge,

" an arm in spaced opposed relation and joined to said base plate via said extension, a lever having swinging movement about said pivoting means as an axis, said lever having an inner section of such length as to clear said arm on the base plate and having an outer section connected to said inner section by an intermediate section whereby said outer section is positioned substantially degrees apart from said inner section, said outer section and vall portions of said intermediate section being spaced from said pivotal means a distance at least equal to the distance between said pivotal means and the remote end of the inner section of the lever,` a link havingone end connected-to a portion of' the leveraway from'said pivotal means for relative pivotal movement about an axis parallel to'the axis of swinging movement of the lever, said arm on the base plate having'an opening'througli which the other end of said link projects for relative lengthwise sliding movement of said link therein whereby swinging movement of the lever toward and away from a position between'said base plate and theA arm on the base plate operates to shift the axis 'of pivotal movement of the link relative to the lever through a dead center position dened by a plane extending radially'of the lever pivoting means and coincident with the position of the longitudinal axis of the link within said opening in the arm on the base plate, means operable to limit movement ofthe lever in one'direction away from a position wherein the axis of pivotaly movement of the'link relative to the lever is in said dead center position including a nut having threaded connection with the portion of the link projecting through said opening in the arm on the base plate and engaging the surface of' the latter about said opening opposite the surface of the arm facing the base plate when the lever is in one of its limits of swinging movement, and means operative to yieldably urge the lever toward its limits of swinging movement in the direction in which the axis of pivotal movement of the link is displaced away from said dead center position.

2. A hinge assembly in accordance with claim 1 wherein the aforesaid means operative to yieldably urge the level toward its limits of swinging movement includes a spring acting between the connection of the link with the lever and the surface of the arm about said opening facing the base plate.

References Cited in the le of this patent UNiTED STATES PATENTS 920,605 Miller May 4, 1909 1,340,866 Witter May 18, 1920 2,063,407 Smith Dec. 8, 1936 2,145,674 Visser Ian. 31, 1939 2,194,287 Marsh Mar. 19, 1940 2,244,168 Miller .lune 3, 1941 2,279,992 Jackson Apr. 14, 19,42 2,578,610 Stone Dec. 11, 1951 2,617,144 Stearns Nov. 1l, 1952 2,623,236 Borchers et al Dec. 30, 1952

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