US2446070A - Separable fastener - Google Patents

Description

July 27, 1948. J. w. ALBIN SEPARABLE FASTENER Filed June 6 1945 INVENTOR. J emiah W. Alin EL-LAW Patented July 27, 1948 ransom,

This inventionr relates to: holding; on looking dew vices especialiy adapted forzuseron doors; vonaair-t planes. or other" moving vehicles or other" devices. subi'ectlto excessive vibrations on shock, dueto: snddemstarting' andistoppingi Qne objectgof the: present: invention is rtheprovision loria; lockaioffi this character which iSiSimpier and inexpensive 1 in construction, in which-1 the maximum! eflioiency in: operation: is; securedi andinn'e which. willisuccessiullvwith standsvibr-a-d tions and 'shocks as well as: other forceseexertedi thereupon;

1 Otherobjects:andadvantageswillrappearaasthe nature of the improvements iszbetter understood the invention consisting substantially in the novel arrangement: and corelation of parts. herein fully described; i and illustrated in,:.the accompanyingdrawings, 1 wherein wsimilar reference characters: aretused to denote corresponding parts throughout..:the several; views.

The disclosure made the basis of-exemplifying the present. inventive-concept suggests a practical embodiment thereof, but the invention is not to be restricted to the 'exactdetails of this disclosure, and the latter therefore-gist to; be understood from an illustrative, rather'than a-re-. strictive standpoint,

In accordance--with-apreferred form of the present-invention, the door-,ulid or cover-tome locked is provided with a=-frusto-conicahdeprese sion: terminating in a, hole, for the receptlombf the frusto-conical head of a key, the said key being provided with a cylindrical shank having a locking tongue for engagement with a slotted member secured to the door frame. The said shank is further provided with a pin or other projecting member to maintain the key in the door.

The inventive idea involved is capable of receiving a variety of mechanical expressions, one of which, for the purpose of illustration, is shown in the accompanying drawings, in which- Figure 1 shows a portion of a door frame in front elevation;

Figure 2 is a longitudinal section taken on line 2-2 Fig. 1;'

Figure 3 is a front elevational view of a portion a door showing the key in place;

Figure 4 is a side view thereof, looking from the right of Fig. 3;

Figure 5 is a front elevational view of the hasp or keeper plate;

Figure 6 is a side view thereof looking from the right of Fig. 5;

Figure 7 is a, perspective view of the key;

tom [3.

r The key 2 Figure-"8 iswa fragmentalrearview onsan enlargedmscalewof a. door showing the": lockingrdevice appliedptheretonanda i nTFigure -QIisl a longitudmalsection taken on. line:

LReferring i now: to nthe' drawings in detail the numeralr H) indicates a, key-having: :preferab-ly frusto econical; head: H provided: with a. transverse groovoror sioti Mi :which: may have a curved -bot- The said slot-H 2 inadapted to receive anyersuitahle instrument "for" turning the "key. shouldpsuch an instrumentyhowevembe mavens able, a coin may be used for' turning; said hey due to the curved bottom of the slot.

til -is: pro-vided with a cylindrical shank i i-which terminates in a-tongue l-5 having uamming: surfaces 1 B at its xen-ds, one on the upper and theother on -its' low-er side,"the object or; which will presently bedescribed, A-pinl1 passes through the shank ld an'd extends oneither side" thereof;

The head ll of the-keyishiauseddn airustoconical depression or housing l8 in'the'door i9 and"the-shank l-flextends inwardly of the door throughva hole"or-opening in'the said depression. The door 'fra-me 21 withywhich; the luck ing' devicecooperates is 1 provided with a hole 22" which permitsthe -passage-of the housing t8 therethrough.

-" Secured to'the--frame-" Z-l'-bymeans of screws 2-3 -an'd' nuts 24 is a member orbracket-Zi which f acts-as a=-keeper-plate; ha-sporlatching member-L The screws 23 pass through holes 26 in the door frame 2| and holes or openings 21 in the base 28 of the member 25. The base 28 has a central circular opening 29 from which extend oppositely disposed slots 30. The opening 29 provides a passageway for the key shank l4 and the slots 30 provide passageways for the extensions of the pin H. The member is further provided with a tab 3| bent from the base 28. The said tab 3| has a slotted opening 32 at the diagonally opposite corners 33-34 of which the metal defining said opening is somewhat raised outwardly thereof. The slot 32 is sufliciently wide enough to admit the key tongue 1'5, thus acting as a lock and preventing unwarranted or accidental rotation of the key.

To look the door IS the key I0 is rotated in the door until the projecting ends of the pin I! are in alinement with the slots in the latching member 25. Pressure is then applied to the head of the key forcing the said pin above the top surface 35 of the base 28 and then turn or rotate the key until the tongue l5 enters and engages the parallel sides of the slot 32 at which upper surface 35 of the base 28 and the tongue I engages the slot 32 thus simultaneously preventing any unwarranted longitudinal or rotary movement of the said key.

It will be noted that the position of the pin I! with respectvv to the slot engaging tonguelB, is such, that when the tongue is,hori zontally disposed intheslot the pin is, at an angle thereto and to the slots 30 in the base 28.

To open the door the key is rotated in tating the key the raised corners or leading edges 33 and 34 in the latchingtab 3| co-act with'the" clock-" wise direction with respect to Fig. 8. In-"so 'ro-i' r" H 3;For use with a pair of perforated uxtaposedxplates, a lock comprising a key, a shank cam surfaces IS on the key tongue l5 -forreadylui :1 rotation and withdrawal of the key tongue from I the locking slot 32 and consequent opening of the door.

-It will be noted that during the unlocking operation there is aslight tension produced be tween the door and door frame tending to separate or push the said door and frame apart. However, such opening action is only possible when the key is physically and intentionally operated but will not react to vibration .or jar due tothe positive engagement-of the tongue in the slotand -to.-.the further engagement of thekey pin with the latch base. I

From the foregoing it will be seen that I have provided a simple, inexpensive, yet highly efficient locking means adapted to withstand shock and vibration. y I V It is to be understood that instead of using the lock for doors it can just as readily be used in combination with two plates or other members which are required to be locked together; therefore, wherever in the claims the term plates is used, doors and their cooperating frames, as well as all other parts with which the lock is adapted to be used are to be included. I

;-What is claimedisz. v l

1., For use with two plates which are adapted tobe locked together, a lock comprising a key rotatably and axially movably mountedin one of said plates, a shank on said key, a pin in said shankto prevent axial disengagement thereof with respect to said plate, the saidshank ex tending through the other of saidplates, a keeper plate bracket, a base on-said bracket secured to the said other plate and provided with a slotted 4 opening to admit the passage of the key shank and pin therethrough, a tab on said base in spaced relation thereto and having a slot therein in axial alinement with the opening in the base, and a tongue at the end of the shank disposed at an angle to the pin for locking engagement with the slot in the tab when the key is rotated to locking position.

2. The combination according ,to claim 1, wherein; the mate ial defining the-islet in the tab is raised at diagonally opposite corners, and cam ming means on the tongue coacting with said raised corners to insure ready rotation and withdrawal of the, tongue from the slot during unlocking operation.

on said key rotatable and slidable in the perforation of one of said plates and extending through the perforation of the other of said plates, a head on said shank'to' limit the axial movement of the key in looking direction, a pinextending from the shank and cooperating with the said plate to limit theaxial movement of the key in unlocking direction, a bracket secured atits base to the-said other plate, the said bracket having a slotted perforation through which the. shank and pin pass,

a tab on the bracket in spaced relation'to'the 4. The combination according toclaim 3 wherein the material defining the-slot in the-tab. is raised at diagonally opposite corners, and cam ming means on the tonguecoacting with said raised corners to insure ready rotation and'witha drawal of the tongue from the slot during un-u locking operation.

' REFERENCES CITED The following references are 'of record in the;

file of this patent:

r v UNITED STATES PATENTS Number i Name" Date 2,183,085 Richardson Dec. 12, 1939 JEREMIAH WQ ALBIN Q-

Images