Utility Carts. Preferably the spring is connected to a point in the retaining mechanism that undergoes storage cabinet locking mechanism free movement relatively to the movement of the locking bar. Oriental Furniture. Kathy Ireland Office. One of mecganism side walls of the locking bar is cut at locations spaced along its length to provide actuating tags 5 for the drawers, respectively.

Lateral File Cabinets. Media Cabinets. Pantry Cabinets. Roll File Cabinets. Shelf Bases. Shelf Organizers. Storage Trunks. Utility Carts. Vertical Bookshelves. Vertical File Cabinets. Search Features.

Adjustable Shelves. Anti-Tip Drawer Mechanism. Bench Seat. Divided Storage. Double Doors. Fixed Shelves. Hinged Doors. Hinged Lid. Single Door. Sliding Door. Storage Bin. Tempered Glass. Tempered Glass Shelves. Wall Mounted. Search Brand. Acme Furniture. Aiden Lane. Alaterre Furniture. Baxton Studio. Blaze Outdoor Products. Bolton Furniture. Breighton Home. Bush Furniture. Christopher Knight Home.

Coast to Coast. CosmoLiving by Cosmopolitan. Coyote Outdoor Living. Crestview Collection. Danya B. Decor Therapy. Deny Designs. Dorel Living. East at Main. Elegant Home Fashions. Elm Lane. Emma and Oliver. Glenwillow Home. Gracious Living. Hillsdale Furniture.

Hodedah Import. Home Styles. Household Essentials. Kathy Ireland Home. Kathy Ireland Office. Manhattan Comfort. Martin Furniture. Mind Reader. Oriental Furniture. OSP Home Furnishings. Conveniently, the pinion and arm can be formed by a single sheet steel pressing.

The free end of the arm 33 is bent over to form a tag 24 around which is fitted one end of a tension spring 13 whose other end is fitted around a tag 25 which is stamped from the base wall of the channel member and then bent out of the plane of the base wall.

When all the drawers of the filing cabinet are shut but not locked by a key-lock mechanism to be described hereinbelow, the bar 4 is in its lower position and the spring 13 is in the position illustrated in FIG. As the bar 4 is raised by the cam track 7 on opening one of the drawers, the bar rotates the pinion 22 anit-clockwise, and thereby causes the arm 33 to move from the broken line position of FIG. As the drawer is opened further, the locking bar 4 arrives at its uppermost position, in which the spring 13 adopts the position shown in FIGS.

Then the spring, still under tension, exerts by way of a substantial turning moment on the arm 33 a sufficient upward force on the locking bar to retain it in that position as the drawer is opened further.

A roller 18 eccentrically mounted relative to a barrel 19 of a key-operated lock 20, on an arm 21, cooperates with the flag as will be explained in detail hereinbelow with reference to FIG. Operation of the autolock mechanism will now be described in detail with particular reference to FIGS. In FIG. It will be seen that the actuating tags 5 are positioned at the entrances to their cam tracks 7.

As the top drawer is opened, relative movement between its inclined cam track 7 and actuating tag 5 causes the locking bar 4 to slide vertically in the channel member, thereby bringing the actuating tag 5 associated with the lower drawer into the position shown in FIG. The spring 13 holds the locking bar 4 in its raised position even when the upper drawer 1 is opened fully and the actuating tag 5 is no longer urged upwardly by the cam track 7.

It will be noted that any attempt to open the bottom drawer of the filing cabinet will fail because the shoulder 9 abuts with the actuating tag 5 associated with the lower drawer. Thus, while the drawer 1 is open, the lower drawer is locked shut. When Storage Cabinet Locking Mechanism Inc the upper drawer 1 is pushed back towards its closed position, the cam track 7 comes into engagement with the actuating tag 5, a lower boundary 15 of the cam track ensuring that even if the locking bar should drop at all whilst the drawer is fully open, the necessary engagement between the cam track and actuating tag can be guaranteed as the drawer is shut.

Owing to the engagement the cam track forcibly displaces the locking bar 4 downwardly and in so doing causes the tension in spring 13 to increase and to pass eventually through its centre state and finally return to the position shown in FIG.

Then the bottom drawer can be opened, if desired, since the actuating tag 5 associated with it is no longer opposite the shoulder 9 but is in fact aligned with the entrance to its cam track 7. Clearly, the autolock mechanism functions in an analogous way, when the bottom drawer is opened, to lock the top drawer shut. The key-lock mechanism will now be described with reference to FIGS. The roller 18 is shown in its unlocked position in FIG.

With all the drawers shut as shown by a broken line in FIG. If one of the drawers is opened, the resulting vertical displacement of the locking bar causes the flag 16 to move into the position 16' indicated in full lines, while the roller 18 remains stationary. On closing the drawer, the flag 16 returns to its original position with the roller at the entrance to the channel When with all the drawers shut a key is inserted into the lock 20 and turned, the arm 21 rotates through a half revolution clockwise so that the roller 18 follows the arcuate path 26 to arrive at the position 18'.

It will be appreciated from FIG. During this time, the flag has been raised by the roller 18 from the position indicated in broken lines to the position 16'. Thus, all the actuating tags on the locking bar are positioned opposite their respective shoulders 9 alongside the entrances to the cam tracks 7 and so none of the drawers can be opened.

To unlock the cabinet, it is merely necessary to rotate the arm 21 through a half-revolution in the anti-clockwise sense to lower the locking bar and thereby release the drawers. Of course, although the description of FIGS. Then, opening of any one drawer will cause all the others to be locked shut. In addition to the described autolock mechanism having a positive over-centre locking action, it is simple and cheap to produce in mass production, in particular because the pinion and its arm, and also the locking bar formed with its teeth, can be made in a sheet metal stamping process.

In the case of the locking bar, the stamping process is followed by an appropriate bending operation. It will be appreciated that when, for example, the cabinet is being carried up or down stairs in a position in which it is turned from the upright position to a position in which the locking bar 4, in the absence of some restraining device, can slide under its own weight or inertia towards what is normally the top end of the cabinet, all the drawers will be locked shut by this movement, it being assumed that the drawers have not previously been locked by the lock Then when the cabinet is returned to the upright position, the drawers will remain locked and cannot be unlocked by the lock 20 because this will be held in the unlocked position by the locking bar 4 in its raised position.

A gravity actuated device is, therefore, mounted adjacent the pinion 22 for holding the locking bar down in such conditions. This gravity actuated device comprises a plastics member 40 fixed to the channel member 2 and formed with a bush 41 for the pinion When the channel member 2 is upright a metal ball 42 lies at the bottom of a recess 43 in the member 40, the ball Steelcase File Cabinet Locking Mechanism Free then being in the position A in FIGS.

The recess 43 lies between a depression 44 formed in the channel member and a depression 45 in the member Depending on whether the channel member 2 happens to be at the top of the tilted cabinet FIG. When in a depression 44 or 45, the ball locks the pinion against rotation because the ball projects slightly out of the depression to engage a pinion tooth 48 so that the ball is held between the tooth and one side of Storage Cabinet Locking Mechanism Python the depression.

The locking bar 4 is, therefore, held against longitudinal movement so that the actuating tags 5 cannot engage the shoulders 9. The inclination of the sides 46, 47 of the recess 43 is such that the ball 42 reaches its locking position before the locking bar 4 reaches the horizontal position.

All rights reserved. Login Sign up. Search Expert Search Quick Search. Locking mechanism for a storage cabinet. United States Patent Initial opening movement of a drawer in a cabinet by cam action raises a locking bar to lock the other drawers closed.

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