Concealed hinge

Nov. 19, 1935.

2,021,702

J. soss

CONCEALED HINGE

Filed Nov. 28, 1934

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Patented Nov. 19, 1935

2,021,702

UNITED STATES PATENT OFFICE

2,021,702 CONCEALED HINGE

Joseph Soss, Roselle, N. J.

Application November 28, 1934, Serial No. 755,091

Claims. (Cl. 16—164)

This Invention relates to concealed hinges and particularly to the provision of an improved sheet metal butt structure for hinges of this class; and the object of the invention is to provide a sheet 5 metal hinge butt with means constituting a unit part of the butt for forming greater bearing surfaces for the pivot or pintle pins of the hinge within the butt to reinforce and strengthen the mounting of the links of the hinge or the link 10 unit in the respective butts; and with these and other objects in view, the invention consists in a hinge of the class and for the purpose specified which Is simple in construction, efficient in use and which is constructed as hereinafter described 15 and claimed.

The invention is fully disclosed in the following specification, of which the accompanying drawing forms a part, in which the separate parts of my improvement are designated by suitable 20 reference characters in each of the views, and in which:

Fig. 1 is a face view of a hinge made according to my invention with the butts in open position.

Fig. 2 is a section on the line 2—2 of Fig. 1.

Fig. 3 is a view similar to Fig. 2 showing the butts in closed position and on an enlarged scale; and,

Fig. 4 is a perspective view of one part of a 30 hinge butt made according to my invention.

My invention relates to what are commonly termed concealed hinges and particularly to hinges of this type employing, sheet metal butts with a link unit for hingedly coupling the butts 35 together. While the invention may be confined to single butt elements employing single link units, I have illustrated in Fig. 1 of the drawing a hinge consisting of two elongated sheet metal butts 5, Sa having a pair of offset housings 6 dis40 posed at the end portions thereof. One of the housings of the butt 5α is omitted. The pair of housings 6 are joined together and spaced apart by a long distance piece or strip 7 which serves to definitely space and aline the pair of housings 45 on each butt one with the other, and especially the alinement of the link units 8 in connection therewith. The upper link unit 8 only is shown in the drawing in order to simplify the showing.

In that the butts are of the same form and 50 construction and in that each housing is.of the same form and construction, the brief description of· one is applied to the other, and like references will indicate like parts. Each housing 6 includes an offset back wall 9, one side of which 55 is provided with two cut-outs 10 and II which are alternately arranged on opposed housings of the hinge butts as may be seen on. a consideration of the upper portion of Fig. 1 of the drawing. The side edge of the wall 9 having the cutouts 11 formed therein also includes extending 0 strips which are folded inwardly and shaped to form outer and inner cylindrical bearings 12 and 13 disposed in common alinement one above the other. In these bearings are mounted pivot or pintle pins 14 and 15 respectively which also ex- 10' tend into and are secured in the end walls of the housings 6 by being riveted over or otherwise as indicated in dotted lines at 16 in Fig. 1 of the drawing.

The link unit 8 consists of long links 17 and 10 short links 18, the long links being mounted on the pins 14 whereas the short links are mounted on the pins 15. The free ends of the links 18 are pivoted to the ends of the links 17 as seen at 19, and the links 17 are pivoted to- 20. gether as seen at 20. In the construction shown, each of the links 17, 18 is composed of a plurality of thin plates forming a laminated link, the purpose of which construction is to provide a simpler and more economical method of constructing the 25. link in providing links of comparatively great width, thus increasing the bearing area of the respective links on their pivot or hinge pins it will be understood in this connection that the question of price is not a factor. The links may be formed from solid strips of material, forged, cast, milled or otherwise formed.

In the assemblage of the link unit 8 in the opposed butts of the hinge, it will appear that the central bearings 12—13 are of the same width ⁸⁵as the width of the opposed links, whereas the wide end bearings 12, 13 at the upper portion of the left side of Fig. 1 and lower portion of the right side of Fig. 1 are slightly wider than the links to compensate for the opposed narrow bear- 40 ings 12, 13 which are employed, primarily to add greater length to the bearing surface of the pins 14 and 15 in the adjacent side wall of the butt housing 6.

The bearings 12, 13 in addition to the function 45 of reinforcing the mounting of the pins 14 and 15 in the respective butt parts, also act as bushings to space the links one from, the other within said butts. By virtue of the manner of forming the bearings 12 and 13, comparatively wide 60 surface areas are provided therefor. In this connection, it will be understood that the free edge of the strip forming the bearings 12, 13 where it engages the back wall 9 of the housing 6 as is indicated at 9α in Figs. 2, 3 and 4 of the draw- 6*

2,021,702

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ing may, if desired, be welded or otherwise secured to said wall. But, in the average hinge construction, the cross sectional contour of the bearings 12 and 13 is sufficient to give the desired 5 strength and rigidity thereto without any additional securing means. The outer ends of the links 18 are fashioned to form flat surfaces 18α to conform with, a seat on the side surface of the adjacent link IT When the hinge is in open posi10 tion to form a stop or partial stop as may be seen at the right of Fig. 2 of the drawing. However, it will appear that where the hinges are employed in connection with motor vehicle doors having the conventional door checks, this feature 15 is not of importance except as a safety catch or stop.

With my improved butt construction, a concealed hinge having the greatest possible strength and durability can be produced at a very nom20 inal cost, permitting the use of hinges of this type where the use thereof would otherwise be prohibitive by reason of costs, and at the same time, providing the strength and rigidity which is necessary to perform the desired hinge func25 tioning. It will appear that while links of predetermined peripheral contour have been disclosed,, this is merely to illustrate one particular form of hinge, it being further apparent that the contour of the butt or butt housings will be 30 characterized to suit the particular hinge employed. The present invention deals with a hinge of compact design wherein the two housings including the hinge unit when collapsed occupy a comparatively small amount of space in the 35 door and door frame or other supports to which the hinge butts are attached.