US1761570A - Trunk lock - Google Patents

Description

June 3, 1930. l A J KOMENAK 1,761,570

TRUNK LOCK Filed segt. s, 1928 l- EE- .EEL

A` .mii l Patented June 3, 1930 UNITED STATES PATENT OFFICE L ALBERT J. KOMENAK, or sTAivrroEn, CONNECTTCIT, AssrGNoEr TO THE EXCELSIOR HARDWARE COMPANY, 0E STAMEOED, CONNECTICUT, A CORPORATION orY CON- NECTICUT Y TRUNK LOCK 'Application led September 6, 1928. Serial No. 304,246'.

This invention relates to locks for trunks,

and the particular style of lock comprises aV hook-shaped element carried by the lid of the trunk or other article, and a lock proper secured to the body of the trunk or other article and provided with a draw bar which is adapted to be engaged beneath said hook and then secured in this position by ythe operation of a suitable key.

The features of' this invention are embodied in y the very simple key operated means for locking and'unlocking the parts, the particular aim of theinvention being to provide a very simple and-efficient lock of this description, which, notwithstanding its simplicity, cannot be operated except by the use of the vusual corrugated key, thus adding to the security of the device. f

A preferred embodiment of the invention is illustrated inthe accompanying drawings which are to be read as a part of this speciication, and in which a i Figure 1 is a front elevation of the lock as it appears withv the'parts in locked condition. Y

Figure 2 is aside elevation of the structure shown at Figure 1.

Figure 3l is a view similar to Figure 2 but showing the relative positions of the parts of the lock carried respectively by thecover and body of the trunk or other article when the parts are disengaged from locking position. e f

Figure 4 is a section at the line 1 4 of Figure 1.

Figure 5 Ais a detail front view of the part of the lock carried by the-body of the trunk or other article with the draw bar removed.

Figure 6 is a similarV view with the draw bar and lock lever removed.

Figure 7 is a rear view of the construction shown at Figure 1. Y I

Figure 8 1s a detail broken View showing the interior of the lock with'the parts in the position they assume when the trunk or other article is unlocked.' l Figure 9 is a view similar to Figure 8, showing the position of the parts when in locked condition, and

Figure 10 is a detail elevation of the key. Similar numerals of reference denote like parts in the several figures of the drawing.

1 is an escutcheon secured to the lid of the the casing 7 which contains and'supports the y locking mechanism. Y

Referring to Figures 8 and 9, 8 is a locking slide contained and guided within the casing 7 and having at its upper extremity flanges 9, l0, a spring l1 being confined betweenthe iange 9 and the upper wallof the casing with its free or active Vend bearing against the'flange 10,7`so that it will be clear that the function of this spring is to normallythrowtlie slide 8 downwardly said spring yielding when this slide is forced upwardly. -V

12 is a tumbler pivoted at 13 to the slide 8 and normally extending athwart said slide, and having a gate let in its upper edge about midway of its length.

15 is a leaf spring that is secured to the tumbler l2 at its heel end below the pivotal point 13, thefree end of this spring bearing against a lug 16 that is carried by the slide 8, the function of this spring being tonormally throw the tumbler upwardly against the stop 17 carried by the slide.

The slide 8 `has a leg 18 which abuts against the lower wall of the casing 7 in order to limit the downward throw of the slide Owing to' the action of thel spring 1l, and from the bottom central portion of the slideeXtends a lock bolt 19 to which access is had through an opening 2O in the face of the plate 4, for the purpose presently to be' The key barrel is made in two independent sections 22 and 23, the outer section 22 being supported so as to revolve freely within the part 6, and extending through a circular opening in the latter, while the inner section 23 is supperted to revolve freely within the casing Av7, and these elements '22 and 23 have a rotatoryengagement with each other, as shown at Figure 4, so that they are properly alined vand vmay be rotated separately or in u1iisn,`the latter' instance occurring when the proper key is inserted within the key slots 24 and 25 formed respectively -in these membei's 22 and 23,

The key slot 24 in the barrel 22 is irregularly shaped, so that af plain flatkey cannot be inserted therethrough so as to engage'the slot 25 which latterl is perfectlyplain, and in operatingthelocka corrugated 'key 26 is used as is shown. at Figure 10, the corrugations in the key being'adapted'to'fit the irregular contour of the key slot 24.

Extending from the side of the irinerkey barrel 23 is a lug 27,!and the upper edge 'of the tumbler '12 on the locking slide and upper edge. portion 28of'the locking slide 8 are directly oppositethis lug, and when the lug is rotated bythe key'fromthelpositionshown at Figure 8 to the position shown at Figure 9'it will force'thet'umbler downwardly until the gate 14 is 'opposite' thelu'g, whereby the latter will bei positioned' against a shoulder 29 which is substantially a continuation of the edge 28, and the tumbler will have then sprung upwardly lso 'that the gate V`14 will embrace the lug 27, vand therebyl offer a resistance' againstthe accidental movement of the lug away from this shoulder.. Y

The hollow raised 'portion 6 isfatpart of the escutcheonplate 4, and itis 'within this part 6 of the plate that the outeiikey' barrel is journaled, andfpivote'd at 30 tothe part 6 of the'p'late structure 4 is'a. hasp 31 which carries projecting fromits inneri face a hook-shaped keeper 32, the extreme free end of this hasp being bent outwardly so as to forni a'finger lift 33. I

Pivoted at 34 to the sides of the hasp'at a distance below the pivotal point is a draw bar 35 whose upper extremityv is b'ent inwardlyto forma hook-like member 36 which is adapted to be engaged with the hook 2in the plate 1 as will now be eX- plained.

YThen the parts are in their unlocked condition, as shown at Figure 3, and 'it is desired to lock the trunk or other article. the hasp is swung upwardly, and the draw bar pushed inwardly so as to effect' an engagement between the hook members 2 'and 36,

and the haspr is then forced'downwardlytand inwardly so as to draw these hook members into closeengageinent, and cause the keeper 32 to pass through the opening 20 and en gage the bolt 19, this engagement of the parts 32 and 19, forcing the bolt upwardly until the member 32 has been finally positioned whereupon the bolt 19 will, by its resiliency, engage within the member 32, an'dthese parts will then be in their normal locking position.

lVhen the parts have been brought into locking position, as above described, it will be quite difiicult to "forcefthe hasp outwardlyso as'to disengage thekeeper 321and bolt 19, but the means heretofore describedand operated by the key causes the lug 27 to be presented'as a barrier against any upward movement of the slide'S, while the engagement of the gate 14 in the tumbler 12 with this lug, will render this locked position of the :parts quite secure as against accidental displacement.

It will be noticedthat a portion of this lug 27 and one wall of the gate 14 are slightly chamfered, so that when the barrel 2 3 is operatedto unlock the parts these beveled portions will cause the tumbler to yield.

It will also be noticed that the contact surfaces of the bolt I19 and keeper 32 are rounded, so thattheir forced engagement in thema-nner above described, will cause the yielding ofthe bolt.

The opening 21 in the casing has no function except t'o'remove the stock of the c asing so that it will not interfere with the keeper when the latter is in locked position, and if the casing were merely indented at this particular location, the invention would be served equally as well.

The keybarrels are'made to rotate independently, so that any tampering with the outside barrel to rotate the same Awill not effect the'rotation of the inside barrel.

The corrugated key opening in the outside barrel renders it exceedingly difficult to reach the inside barrel and rotate it.

that is claimed is:-

1.L A lock for trunks, comprising a lhook member and an escutcheon plate structure secured vrespectively to the lid and 'body of the trunk, a hasp pivoted to said structureand carrying a pivoted draw-bar adapted for engagement with said member, a casing secured to the inner face of said structure, independently rotatable alined keyI barrels journaled within said structure and casing the inner barrel having a lat erally extending lug, a resilient slide terminating at its lower end in a bolt, ake'eperhook carried by said hasp and adapted'for automatic locking engagement with said bolt when the hasp is forced to locking position, and a spring tumbler having a gate and adapted to be forced downwardly when said lug is rotated to a position in abutment with said slide, said gate embracing said lug after said rotation of the latter.

2. A trunk lock, comprising a hook memiso til

ber fixed to the trunk lid, a plate structure Y secured to the trunk body and having an opening in its lower end, a casing secured to the underside of said plate structure, a slide bolt within said casing and positioned immediately opposite said opening, a hasp pivoted at its upper end to said plate structure and having a hook shaped keeper eX- tending from the inner face of its lower end, a draw bar pivotally carried by said hasp and adapted for locking engagement with said hook member, the closing of the hasp causing said bolt to automatically engage within said keeper with the draw bar firmly engaged within said hook structure, independently rotating outer and inner key barrels journaled within the plate structure and easing, said barrels having key slots, the slot in the outer barrel being irregular to af'.- eommodate a corrugated key, while the inner barrel has extending laterally therefrom a lug, a spring actuated tumbler pivoted to the slide bolt and formed with a gate in its upper edge, whereby, when the barrels are rotated by the key said lug will force said tumbler downwardly against its resiliency and will' abut a part of the slide bolt and will be engaged within said gate by the resilient recovery of the tumbler.

In testimony whereof I aiX my signature hereto.

ALBERT J KOMENAK.

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