US 1926431 A
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Description (OCR text may contain errors)
Sept. 12, 1933. A. E. BUSCH 1,926,431
ADJUSTABLE SPRING HINGE Filed June 8, 1951 i'i l l' II; 5 l 7 9 WW/W Patented Sept. 12, 1933 UNITED jSraies .2x-mman...
PATENT oFFics hinge and enabling the door to be opened to nearly its full extent, with adaptability for adjustment to regulate the tension on the springs that co-operate with the plungers and thus enable the leaves of the hinge to fully close; and so that the 'i door will be automatically closed by the spring action. y
My improvements also provide a self-contained adjustable spring hinge requiring only the boring of holes in the jamb and the door for the reception or" the shells containing the springs and plungers, in addition to the employment of the ordinary wood screws necessary to secure the leaves of a butt hinge to the door and jamb.
Further advantages resulting from my present improvements will appear from the following description.
In the accompanying drawing:
Figure 1 is a front elevation, showing the hinge in position on a door and jamb, certain parts being broken away;
Fig. 2 is a horizontal section through the hinge, jamb, and door, the hinge and door being closed;
Fig. 3 is a detail sectional View showing the position of the parts when the door is open to nearly its full extent; and
Fig. 4 is a detail perspective View of the duplex adjustable linkage between the plungers.
The door and jamb are shown at 1 and 2, re-
The butt hinge to which the present improvements are applied, comprises leaves 3, 4, these leaves having eyes 5 through which passes theA usual pintle 6. The leaves 3, 4, are provided with holes, not shown, through which pass wood screws, not shown, which are entered in the door and jamb 1, 2.
Connected to leaves 3, 4 as, for instance by screw threads 7 are barrels or shells 8, 9. The
' connection may be in the form of internally screw Y 9 are thus rigidly connected to the leaves 3, 4.
Fixed in any suitable manner within the shells 8, 9 are tubular bushings l0 which serve as spring abutments, as will presently appear. n
The ends or theshells 8, 9 may be closed by suitable screw plugs 1l.
Contained within the shells 8, 9 are plungers 12, 13 having stems respectively shown at 14, said stems being surrounded by extensible coil springs, respectively shown at 15 which bear against the respective plungers 12, 13 and the bushings 10 and tend to force the plungers in opposite directions and away from the leaves 3, 4.
The stems 14 are connected by an improved duplex linkage which is shown, mainly, in Fig. 4. This linkage comprises a solid or one-piece link 16 which is pivoted, preferably detachably, at 17 to the stem 14 for the plunger. The other part of the duplex linkage is composed of two pieces or members, one of which is a flat link 17 pivoted preferably detachably to the stem 14 of the plunger 13, as shown at 18. The remaining part of this adjustable section has a coupling 19 which is detachably pivoted at 20 to the link 16. The coupling 19 has a slotted end 21 which receives the reduced end 22 of the link 16.
The interior of the coupling 19 and the exterior of the link or section 17 are screw threaded, as shown at 23.
A transverse hole 24 is provided in coupling 20 to receive a Spanner or any suitable tool for turning the coupling 19 on the member 17 to change the effective length of the compound link 17', 19. This can be done by taking out the pivotal connection 20. Thus, any desired adjustment may be obtained which regulates the tension of the springs 15 and enables the door to fully close, beside providing for a take-up action to compensate for wear and decreased power. l
Furthermore, the provision of a duplex linkage comprising the parts 16, 17', 19, and the adjustability of the parts 17 and 19 permits of a much wider vor greater opening of the door (nearly 180) than has been possible with spring hinges of which I have knowledge.
The spring may be readily applied to the door and its jarnb merely by boring in them holes of a size which will permit snug insertion of the shells 8, 9and then the screws, not shown, are passed through the leaves 3, 4 into the door and jamb.
Bushings 10 may be provided, as shown at 25, to accommodate the link 16 when the hinge is spread open, as shown in Fig. 3.
My improved hinge has many advantages, among which may be mentioned neatness, concealment, self-closing, adjustability of tension, and provision for opening through an angle of nearly 180.
What I claim is: l. In an adjustable spring hinge, the combination of stems, expansion coil springs acting on said stems, adapted to' position said stems in alinement, and a linkage connecting the stems together, said linkage being composed of a plurality of sections joined together and including, as a part thereof means whereby the over-all length of the linkage may be shortened or lengthened to regulate the tension of the coil springs and to compensate for wear and decreased spring power.
2. In an adjustable spring hinge, the combination of stems, expansion coil springs acting on said stems, adapted to position said sterns in alnement, and a linkage connecting the stems together, said linkage comprising a plurality of sections joined together, of which one section is composed of parts which are adjustably connected together so that the parts of said section may be extended or contracted in relation to each other, thereby to lengthen or shorten the overall length of said linkage between the points where it is connected to the respective stems to regulate the tension of the coil springs and to compensate for wear and decreased spring power. 3. In an adjustable spring hinge, the combination of stems, expansion coil springs acting on said stems, adapted to position said stems in alinement, and a linkage connecting the stems together, said linkage being composed of a plurality of sections joined together, one of said sections embodying parts connected together by a screw threaded extensible and contractible joint which permits said parts to be relatively extended or relatively contracted, thereby to change the effective length of the linkage between the points where said linkage is joined to the aforesaid stems to regulate the tension of the coil springs and to compensate for wear and decreased spring power. Y
AUGUST ERNST BUSCH.