US3855667A

US3855667A - Pivot hinge

Info

Publication number: US3855667A
Application number: US00384369A
Authority: US
Inventors: G Messina
Original assignee: Individual
Current assignee: Individual
Priority date: 1972-08-04
Filing date: 1973-07-31
Publication date: 1974-12-24
Anticipated expiration: 1991-12-24
Also published as: DE2339459A1; FR2195249A5; JPS49132843A; IT991943B; AU5869473A

Abstract

A concealed pivot hinge includes a first part having an elongated hollow bush adapted to be sunk into the edge of a door, and a second part having a pin and a colinear threaded portion, to be inserted through a door plate with said pin projecting for rotation in said bush. Identical such hinges may be fitted top and bottom, or one hinge may be replaced by a pin through a door plate engaging bushes in the door and plate and rotatable in at least one bush.

Description

O United States Patent i191 i111 3,855,667 Messina [451 Dec. 24, 1974 1541 PIVOT HINGE 2,988,414 6/1961 Crowe et ai. 16/129 wel invento eine Messina, 25 Margaret So ij 1111321 ff-ii 16H36 SOUIhPQfl, 4215 Queensland 3,015,126 1/1962 Ahigren 16/136 Australia 3,141,190 7/1964 Reiss 16/136 [22] Filed: July 3l, 1973 Primary Examiner-Paul R. Gilliam [2l] APPL NOJ 384,369 Assistant Examiner-Doris L. Troutman Attorney, Agent, or Firm-Donald D. Jeffery [30] Foreign Application Priority Data Aug. 4, 1972 Australia 9966/72 [57] ABSTRACT A concealed p1vot hinge includes a first part having an [521 U.s. C1. 16/168 elongated hollow bueh adapted to be sunk imo the [51] im. C1 Eosd 5/10 edge of a door, and a Second Part .hai/mg a pm and o [58] Field ofsearch 16/169, 168, 136, 128 A, eolmear threaded portlon, .to oe inserted throughe 16/129 door plate with said pin projecting for rotation in said bush. Identical-such hinges may be tted top and bot- [56] References Cited tom, or one hinge may be replaced by a pin through a UNITED STATES PATENTS door plate engaging bushes 1n the door and plate and 1,987,516 l/l935 Permi et al. 16/131 rotatable m at least one bush' 2,828,668 4/1958 De Angelis 16/128 A 3 Claims, 3 Drawing Figures ,41 le A;

FIG. 1.

FIG. 3.

PIVOT HINGE This invention relates to a pivot hinge mainly, though not only, for use on cupboard or cabinet doors.

An object of the invention is to provide such a hinge which is very easy and quick to fit and therefore economical in labour costs.

Another object of the invention is to provide a hinge which is wholly concealed when installed.

A further object is to provide a hinge which requires no adjustment in fitting and which may be applied to any point along a door or the like, for example to the vertical centreline of the door.

The invention, in one aspect, comprises a pivot hinge including two parts, the first part including an elongated hollow bush and the second part including a pin rotatably engageable in the bush and a threaded portion fixed to and colinear with said pin.

The second part preferably has a screw fastening fixed to and co-linear with said pin.

In order that the invention may be better understood, one example will be described with reference to the accompanying drawings, in which:

FIG. 1 shows an exploded view of hinge components,

FIG. 2 shows in section a complete hinge using the components of FIG. 1 mounted to a cabinet door, and

FIG. 3 shows a modification of the hinge of FIG. 2.

As shown in FIG. 1 an elongated bush 10 is provided into which a pin 1l fits rotatably.

Removal of a hinge according to the invention is also very simple, involving merely unscrewing the two pins 1l.

If it is desired that the pivoted fitting be self-closing, a helical spring (not shown) can be incorporated in the pin-screw combination 11-12 so that when the fitting is pivoted the spring is wound and returns the fitting to unpivoted position.

Referring to FIG. 3 the lower hinge assembly A is identical with that shown in FIG. l, the same references being used.

The upper assembly B, however, is further simplified.

A bush 17 is mounted in a hole in plate 15, and a second bush 18 in a hole in the edge of door 14. A spacing washer 19 (as before) lies between plate 15 and door 14. A pin 20 is rotatably engaged in both

bushes

17, 18. The upper assembly at B is thus simpler and cheaper than that at A. Installation of the hinge is similar to that for the FIG. 2 assembly.

It will be apparent that the hinges described may be fitted in much less time than prior hinges and by relatively unskilled labour, since the only tools necessary are a drill, a simple jig and a screwdriver.

Doors may be fitted without horizontal and vertical framing for individual door openings.

The hinges are very versatile. They may be centremounted instead of edge-mounted to give 360 swing orv may be horizontal to give lift-up hinging.

Pin l1 has an end threaded part 12 of somewhat greater diameter. A nylon washer 13 fits over pin 1l, but abuts the end of bush 10.

As shown in FIG. 2, a door 14 is pivoted between top and

bottom plates

15, 16 by two of the assemblies of FIG. 1, vertically aligned with one another.

Installation is simply a matter of positioning door 14 as required and drilling a hole through

plate

15 or 16 and into the door edge, the drill used providing both a hole in the door to accommodate bush 10 with a push fit and a widened part in

plate

15 or 16 into which screw l2 can be screwed. The vertical alignment of the two assemblies is obtained'by use of a simple jig. Nylon washers 13 are positioned and the top and bottom assemblies screwed into place with the heads of the screws flush or countersunk as shown. The door pivots about the common vertical axis of both assemblies. A nylon washer 13 serves both to space the door 14 from

plates

15 and 16 and to give a low-friction pivot. It will immediately be seen that mounting of the door is extremely easy and quick and that the pivot may be placed at any position along the door.

The pivot hinge of this invention is particularly suitable for use with particle board constructions.

It will be clear that the invention may be used for hinging doors, windows or any other pivoted fittings either about a vertical axis as described or about a horizontal axis.

What I claim is:

1. A door hingedly mounted within a door frame having top and bottom plates, an upper and lower hinge assembly; one said assembly including an elongated hollow bush lying in a hole in an edge of said door with its outer end flush with said edge, and a part having a pin and a threaded portion colinear with said pin threaded into a hole through its plate, said pin projecting into rotatable engagement in said bush; and the other said assembly including a first bush lying within a hole through its plate, a second bush lying in a hole in the edge of said door with its end flush with said edge, and a pin passing through both said bushes and rotatable relative to at least one bush; the axis of said hinge assemblies being aligned.

2. A door as claimed in claim 1, including a spacing washer between said door and each said plate, said washer surrounding said pin and abutting the end of each bush of the assembly.

3. A door hingedly mounted with a door frame having top and bottom plates', an upper and a lower hinge assembly, each said assembly including an elongated hollow bush mounted in a hole in an edge of said door with the outer end of said bush being flush with the surface of said edge, a hole through the adjacent plate aligned with the hole formed in said door, said hole in said plate being threaded from the end thereof remote from said door, a part having an external thread and a pin colinear with said thread and extending into said holes from said remote end of said plate to project said pin into rotatable engagement with said bush and to engage said external and internal threads, and a washer positioned between said door and said plate for spacing such members, said washer fitting around said pin and abutting the end of said bush.

Claims

3. A door hingedly mounted with a door frame having top and bottom plates; an upper and a lower hinge assembly, each said assembly including an elongated hollow bush mounted in a hole in an edge of said door with the outer end of said bush being flush with the surface of said edge, a hole through the adjacent plate aligned with the hole formed in said door, said hole in said plate being threaded from the end thereof remote from said door, a part having an external thread and a pin colinear with said thread and extending into said holes from said remote end of said plate to project said pin into rotatable engagement with said bush and to engage said external and internal threads, and a washer positioned between said door and said plate for spacing such members, said washer fitting around said pin and abutting the end of said bush.