US1829770A - Drawer lock mechanism - Google Patents

Description

, 9 c. E. TANNEWITZ 1,829,?70

DRAWER LOCK MECHANISM Filed Oct. 22. 1928 INVENTOR 'i Patented 3, 1931" 7 foam; E. mnnnwirz, or GRAND man m msm DRAWER LocxivmcnnNISM imam filed umber-a2, 1923.] semi Na. 313,977.

The main objects of this inventionare:

First, to -provide an improved locking means for desk-drawers or, for a series: of

' "drawers which is actuated to locking position a from an actuating'drawenthe locking means I being returnedto its-open position by gravity.

' when the actuating drawer isunlocked or re- "leased; ;f

Second, to providev an improved drawer In locking means of the class'describedwhichis 'very simple in its structure and has the parts arranged so thatitmay be quickly'mounted fin a desk structure; V l i j Objects pertaining to detailsand-economies 1.; of my inventiohflwi'll appear from [thede fscription to follow. The invention is defined in th'e'claims p A structure which apreiferred embodif ment of my invention isclearly illustrated 1n 7 -f the accompanying drawingsin which Fig. "1' is a fragmentary view mainly in vertical section on aline corresponding to line 1-11of Fig. 3, parts being broken away to better show structural details. 1 I i as Fig. 2 is a fragmentary vertical section on line 22 of Fig.3;

Fig. 31s a horizontal section 01; line 3-3 of Figs'land 2. I r

Fig. 4: is a perspective view of the-locking V mechanism removed from the desk. M H

o Referring to the drawings,the structure il-. lustrated is an-office desk ofthe typeinwhich V I have embodied my improvements and. in general, comprises a suitable cabinet desigm hated by the numeral 1 and provided with a J series'ofdrawers 2,3'and et'arranged vertical- 1y. Thecentral drawer of the desk is shown "at 5; this arrangement'being commonloflice desk arrangement.

:4 The drawer is p'ibvid a with a is. or

. j other means for'retaining it in closed posi tionfshown conventionally at 6. At the rear of the seriesof drawersI'mount a locking bar 7 for vertical reciprocating movement, a

pair of b-rackets B'being secured to the desk "frame and provided with projecting studs 9 engaging thelong iftudinal slots 10 in the lock- 'in'gbar. I l

V f 'The lockingrbar has forwardly projecting 4 hooks '11 .f'aced upwardly to engage withithe' Theweight of the locking parts such thereby releasingthelo'ckeddrawers.

be obvious to those skilled in the art to which my invention relates.

airbase a. ml-ans, of the series f. drawers as is-illustrated Fig. 1. The

' weight; of thelocking bar and its attached partsis such as to return the locking bar ;to'

unlocking position when its actuating means i sreleased; 7

-An;actuating lever 12ispiv0ted at 13 at the rear of the drawer 5 with its downwardly projecting arm 14 in position to be engaged y the drawerv 5 when it isc ompletely closed. The arm151of the actuatinglever' engages an arm l6-projecting laterally fromqthe lock-. ingi bar-so that thelocking'baris lifted to locking position when'the drawer 5is fully closed;orzin the;position indicated by dotted My 'improved locking mechanism is very simple andie'conomic'al in its parts and at the same-timej.-they..are strong and durable, no springsbeing required to move the parts to unlocking position; "The spring arm of the actuating;leverixyields, however, to permit closing of the drawers afterthe locking bar hasfbeen actuated as described.

I have illustrated and described my improvements in an adaptation which is suitablefor types of desks which are very extensively used. Other adaptations for par- ;ticular designs of desks will, it is believed,

'Having thus described my invention, what I claim as new and desire to'secure by Letters Patent, is: r I

1. In a structure'of the class described the combination of a plurality of drawers'hav- '100

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