US2648093A - Multiple leaf concealed hinge - Google Patents

Description

Aug. 11, 1953 R. J. WILSON MULTIPLE LEAF CONCEALED HINGE 2 Sheets-Sheet 1 Filed Aug. 25, 1952 /s mmvrox Reefer d. WILSON BY 2 21:4114, 7641441 2 0&1 4

ATTORNEYS.

Aug. 11, 1953 R. J. WILSON 2,543,093

MULTIPLE LEAF CONCEALED HINGE Filed Aug. 25, 1952 2 Sheets-Sheet 2 l INVENTOR.

ROBERT J. WILSON KW), )w

ATTORNEYS.

Patented Aug. ll,::.1953

MULTIPLE LEAF CONCEALED'HINGE Robert J. Wilson, Detroit, Mich; assignor'to Soss Manufacturing Company, Detroit-,;Mich., a corvporationoi. Maine Application August 25, 1952;SerialNo." 306,094

' 4 Claims.

Anotherobject of the invention is that asthe dooris. swung open the hi ge, arms some of which are arranged to form a toggle, throw over the .center line so as to tend to keep the door fully open.

Referring to the drawings:

Fig. 1 is a fragmentary section through a refrigerator taken at the cabinet pillar and the door pillar. The door is in closed position.

Fig. 2 is a similar view showing the door swung open.

Fig. 3 is an elevation of the hinge.

Fig. 4 is a perspective of the door hinge casing.

Fig. 5 is a perspective of the stationary pillar hinge arm and butt.

Fig. 6 is a fragmentary sectional view of the pillar and the hinge with parts broken away.

The stationary pillar of the cabinet is designated I. This is formed of sheet metal to which is secured a heavy metal face strip 2. The sheet metal is doubled upon itself and projects beyond the face strip 2 of the pillar, then it is turned over and projects integrally to form at 3 a door jamb with which engages the rubber seal 4 which is secured on the door pillar 5. This door pillar 5 is cut away at B to form a hinge recess. The hinge butt I l is fastened to the metal strip 2 of the stationary pillar by means of screws engaging in a nut member l2 on the back of the stationary pillar. There are three of these screws going through the three countersunk screw holes 9 in the butt. This butt II has a long outwardly projecting fixed arm l4 with two stepped or inset portions. This arm is widest at its inner portion [5 where it joins the hinge butt II. It is stepped down to about half width in the portion [6. It is cut away at both top and bottom and in these cut away portions are a pair of links I! pivoted at l8 to the narrow portion of the fixed arm [4. The links H are, at their outer ends, pivoted to the ears 19 that project from the hinge box that is fastened to the door.

These are two of these bowed links 11, each preferablyxtwotply. The outer end of the stationary arm I4 is stepped down or cut away'at 2| to form the narrowed end 22 to -which are pivoted twolinks 23 aboveand below the narrow portion of the end of .the stationary-arm l4. These links passlinto "the hinge boxand are pivoted at '24 to the top and bottom-wall of'the hinge box.

Pivotally supported onthe'two steppeddown portions of the stationary arm l4 are what amounts, to a pair of parallel links.-;but these approximately parallel :links have ineach case a doublezply arm above and-below the stationary arm. The two offsets and the-twothicknesses of the stationary arm are for the purpose of-setting these parallellinks indifferent planes-so that theycan pass eachother in the movements that theymake in the 'openingand'closing'of the door.

The upper plate 1 and the lower plate 8 are fastened by screws [0 passing through the countersunk openings 9 into the portions of the door pillar above and below the cut out recess 6. This large cut out recess accommodates the hinge links 23 and the hinge arm I4 when the door is in closed position, see the position of the parts in Fig. 1. Channels 26 are provided in the hinge box above and below the stop block 25 to accommodate the swinging links [1. When the door opens to a right angular position as shown in Fig. 2 the hinge box carried on the door pillar has turned through and changes from a position shown in Fig. 1 to aposition shown in Fig. 2. It is turned so that now the links 23 are stopped by the bases of the channels 26 and the pivot pin 29 and consequently the door is checked in the perpendicular position. Block 25 spaces the channels 26. The links, when the door is closed as shown in Fig. 1 form roughly a parallelogram though technically a trapezoid because no two of the links are exactly parallel. The general action is the action of a set of parallel arms.

Note, by comparing Figs. 1, 2 and 6 that the door not only swings on pivot 24, but the door moves bodily and carries the pivot 24, see Fig. 6, from its position shown in Fig. 1 to the position shown in Fig. 6 which is quite a little outward from the original position. But then, when the door is swung clear open, pivot 24 returns to the position shown at 24a in Fig. 6 and now lies in substantially the same position that it was when the door was closed as shown in Fig. 1.

This is a very desirable movement for the reason that the door is arrested in the perpen- 3 dicular or vertical position and it does not project much beyond the side of the cabinet by reason of the compound movement which not only throws the door out, but in the final position pulls the door in so as to get as much space and clearance adjoining the cabinet as possible.

The links l1, together with the hinge casing attached to the door pillar forms a toggle in which the hinge casing is one arm pivoted on the link 23 as a support, and the links I! pivoted at 29 to the casing are the other arm of the toggle. The knee of the toggle is at the pivot 29. When the door is closed as shown in Fig. 1, the knee of the toggle is below a straight line between the two ends I8 and 24 of the toggle, and the door tends to keep closed, especially if a spring should be added to stress the hinge arms. When the door is in the position shown in Fig. 6, the hinge arms of the toggle are just ready to pass the center line of the toggle. And, when the door is in the position shown in Fig. 2, the toggle arms have passed the center line and are broken upwardly.

What I claim is:

1. A concealed hinge for a cabinet or other article having in combination a hinge butt for attachment to the face of a stationary pillar of a cabinet, provided with an outwardly extending long stationary arm having insets or step-downs therein to diminish the thickness of the hinge arm first beginning near the hinge butt and secondly at the free end of the stationary arm, a hinge casin with upper and lower plates for attachment to the pillar of a swinging door and below a recess provided in the door pillar, the hinge casing having a box portion at the middle fitted into said recess with outwardly projecting ears, one at its top and one at its bottom, and provided with a pair of clearance channels, a

pair of links pivotally connected to the first narrowed section of the stationary arm at a point adjacent the hinge butt, and with said ears, one link being above the stationary arm and the other below the stationary arm, and links connecting the free end of the stationary arm in the second inset and step-down with the center stop block, one link above and the other below the stationary arm, the said links forming roughly a parallelogram set of links for swinging the door and also moving the door bodily so that when the door is swung out to perpendicular position the jamb face of the door is swung in and the door is stopped in perpendicular position by means of the second mentioned links butting against the channel bottoms.

2. The combination claimed in claim 1 in which each one of these links is made up of two strips or plies.

3. The combination claimed in claim 1 in which the hinge casing is a die casting.

4. The combination claimed in claim 1 in which the hinge casing pivots on the second mentioned pair of links and this casing together with the first mentioned pair of links pivoted to the fixed arm adjacent the hinge butt form toggles which swing over lines through the ends of the respective toggles in opening and closing of the door to tend to keep the door in open or closed position.

ROBERT J. WILSON.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 1,078,786 Hanba et al Nov. 18, 1913 1,941,529 Bates Jan. 2, 1934 2,164,757 Soss July 4, 1939

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