US2486460A - Multiple door lock - Google Patents

Description

Nov. 1, 1949. r F. BONE BERGE 2,486,460

MULTIPLE DOOR LOCK Filed May 22, 1846 Y 5 Sheets-Sheet 1 FIGURE fin a4 a2 INVENTOR.

FREDERICK A.BONENBERGER I A Midm ATTIC! RN EYE Nov. 1, 1949.

F. A. BONENBERG ER MULTIPLE DOOR LOCK Filed May 22, 1946 Ill Um FIGURE 2 5 Sheets-Sheet 2 FIGURE 3 INVENTOR. FREDERICK A BONENBERGER ATTD RN EYB Nov. 1, 1949. F. A. BONENBERGER 2,486,450

MULTIPLE DOOR LOCK Filed May 22, 1946 3 Sheets-Sheet 3 FIGURE Z FIGURE 5 [NV "OR.

FREDERICK A. BONENBERGER A'ITD RN EYS Patented Nov. 1, 1949 UNITED STATES-PATENT OFFICE MULTIPLE DOOR LOCK Frederick A. Bonenbrger, N orristown, Pa. Application May 22, 1946, Serial No. 671,537

' 2 Claims.

My present invention relates to an improved multiple door lock and more especially to the locking mechanism provided for an enclosing structure such as a refrigerator having a plurality of doors wherein according to my invention the doors may be selectively locked from a central handle having indicated positions or all of the doors may be locked, and the single handle,

may itself be locked. However only one accessible outside lock is provided for the operating handle and by simple manipulation of this handle the said doors may be selectively locked and unlocked.

In the accompanying drawings I have illustrated one complete example of the physical embodiment of my invention according to the best mode I have thus far devised but it will be understood that various changes and alterations may be made in the exemplified structure within the scope of the appended claims.

In the drawings:

Figure 1 is an assembly view of the locking mechanism of my invention in front elevation.

Figure 2 is a sectional view taken on the line 2-2 of Figure 1.

Figure 3 is a front elevational view of the operating disk and the connected links.

Figure 4 is a modified form of the controls.

Figure 5 is a sectional view taken on the line 5-5 of Figure 3.

Figure 6 is a sectional view taken on the line 66 of Figure 8.

Figure 7 is an enlarged fragmentary view, partly in section, disclosing certain details of the invention.

Figure 8 is a front elevational view of an enclosing structure showing the plurality of doors and the operating handle therefor.

Referring now to the drawings in detail I have illustrated an enclosing structure which may be a refrigerator or cabinet or other structure having doors I, 2, 3, and 4 closing the openings in the front wall 5 thereof. The center post 6 is provided between the pairs of doors and the doors are hinged as at 1, while individual latches 8 and keepers 9 are fashioned as illustrated for each door. These latches are solely for the purpose of keeping the doors closed and have no true locking function and form no part of the invention.

In the locking mechanism of my invention I employ a disk I2 secured upon the shaft l4 for rotation therewith and an external handle it is provided on the portion thereof protruding from operating the front of the refrigerator or cabinet. The shaft [4 is rotatably mounted in the center post 6 and an inner wall of the refrigerator as shown in Figure 2. t

A locking disk I8 is also provided on the shaft I 4 in fixedrelation thereto and the notches 20 therein co-act with the lock 22 having a notchengaging bolt 24 formed with an escutcheon plate 26 on the cover plate 28; Thus with the bolt 24 projected into a notch the handle I6 may not be manipulated and the entire mechanism is locked.

The cover plate 28 is suitably retained on the center post 6 by screws, as shown in Figures 1 and 8 and is formed with anarcuate series of depressions 36 into which progressively the balls 32 fall and are pressed by the spring 34 in the handle l6, Figure '7. The depressions are marked 'to indicate the doors I, 2, 3, and 4 for which the depressions respectively act to releasably detain the handle [6.

The links 36 pivotally connected with the links 31 are connected in pivotal relation with the disk l2 and are located diametrically opposite each other thereon. The upper link 31 is secured to the cam block 38 for reciprocal movement when the disk I2 is rotated, and the cam faces 40 and 42 on the opposite edges of the cam block at different positions will engage the rollers 44 on the bolts 46 to depress the bolts against the tension of the springs 48 in the cylinders 50 whereupon the said bolts will when depressed engage the keepers of the doors I and 2 respectively. The cam face 40 is located to engage its roller first while a further upward movement of the block will cause the second cam face 42 to engage its roller.

Below the disk l2 the links 36 and 31 associated in the same fashion with the disk 12 provide reciprocal movement for the cam block 52 having spaced cam faces 54 and 56 on the opposite sides thereof.

These lower cam faces 54 and 56 are spaced on the cam block 52 to co-act progressively with the rollers 58 on the bolts 50 and these bolts are depressed against the tension of the springs 82 through the cylinders 64 into the keepers of the doors 3 and 4 respectively.

It should be-noted that the four cam faces 40 and 42, and 54 and 56 are each located a different distance from the center of the disk I2 and this radial difference is determined in order that selected movement of the disk on its axis by the handle will move into operating position only one cam face at a time. The cam faces will op- 3 mate in the following order, 40, 42, 54, and 56 to respectively lock the doors I, 2, 3, and 4. When the handle is moved to position all of the cam faces will be in position so that the bolts will be withdrawn from the doors and all doors will be unlocked.

In Figure 4 I have shown a modified form of the operating mechanism wherein a disk on the shaft 12 and having a handle 14 is fashioned with a gear 16 on the shaft and the opposite rack bars 18 and 19 are moved in o posite direction by rotation of the handle and shaft. The bar 19 is formed with notches therein as 80 for selective engagement with the lock 82 by means or the bolt 84. Access to the lock is provided exterior of the refrigerator by means of .the escutcheon plate 86.

From the above description it.will be apparent that the mechanism of my invention is positive in operation and will permit the selective control of the four illustrated doors to lock doors I, I, 3, or 4 in order to unlock all or the doors.

Having thus fully described my invention what I claim as new and desire to secure by Letters whereby continued rotation of the disk and reciprocation of the links will progressively engage the cam faces with the bolts to lock the same.

2. A locking mechanism for multiple doors including a normally open bolt for each door, an operating disk, a shaft and handle therefor, a cover plate on the shaft provided with position indicating indicia for the handle, opposed links diametrically mounted on the disk, said links being extensible under rotary movement of the disk, cam blocks on the links for reciprocation therewith, and cam faces on said blocks radially spaced from the center of the disk whereby movement of the handle to a selected indicated position will extend the links and the cam blocks to actuate the cam face corresponding to the selected position.

FREDERICK A. BONENBERGER.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 608,893 McArthur .l--........sa. n ARE. 9, 1898 2,260,326 Marine -a 00k 28, 1941 FOREIGN PATENTS Number Country Date 631,479 Germany .m....-....=. Jan. 28, 1938

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