US1436620A

US1436620A - Auxiliary lock for bolts

Info

Publication number: US1436620A
Application number: US522629A
Authority: US
Inventors: Fred L Bethge; John W Storer
Original assignee: RICHARD M AITKIN
Current assignee: RICHARD M AITKIN
Priority date: 1921-12-15
Filing date: 1921-12-15
Publication date: 1922-11-21
Anticipated expiration: 1939-11-21

Description

F. L. BETHGE AND l.. W. STORER.

AUXILIARY LOCK FOR BOLTS.

APPLlcAnoN FILED Dic. |5, 192|.

1,436,620 Patnted Nov. 21,192.2.

2 SHEETS-SHEET l.

W ATTORNEYS.

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F. L. BETHGE AND J. W. STORER.

AUXIUARY LQGK FORBOLTS.

APPLICATION FILED DEC, 1.5. |921.

Patented Nov. 21, 1922;.

2 SHEETS-SHEET 2.

Patented Nov. 2l, i922.,

rarsur FBED'L. BE'IHGE AND JOHN W.'STORER, OF DENVER, COLORADO, ASSIGNORS TO RICHARD M. AITKIN, OF DENVER, COLORADO. u

AUXILIARY Loon ron Bours.

Be it linown that we, FRED L. Bnrrron and JoriN lV. Sionnn, both citizens of the United States, residingat the city and county of Deliver and State of Colorado, have invented certain new and useful Improvements in Auxiliary Locks for Bolts, of which the following isa specification.

This invention relates to improvements in auxiliary burglarfproof protective equipment for locking bolts,and while the invention has been primarily devised with reference to the `general bolt shooting systems of permutation-lock controlled safety vault doors, it is to be understood at the outset that the improvements are not necessarily restricted to any such one specific use, but may likewise be satisfactorily employed with other analogous safety bolting systems.

It is understood that, in burglarizing vaults, safes and analogous permutationlock controlled compartments, it is quite customary to disrupt thepermutation-lock tumblers, by drilling` and punching or by the employment of electricity, an Oxy-acetylene 'torch or explosive forces, to permit of the manipulation of the door. bolts. Various devices and systems have accordingly been heretofore devised `to automatically` bring supplementary locking means into operation in such an emergency, but, withoutsiiecifically discussing such prior advances in the art, it may be said briefly that there are many serious objections thereto, because such devices or systems themselves as a rule have been susceptible of being tampered with. to render them inoperative before attempting to disrupt the permutation lock, the functioning` of which disruption was aimed to canse the actuation of said supplevinentary locking means.

The broader aim of the present invention has been to provide a novelly constructed auxiliary locking device so associated with the door bolts themselves, by a new combination and arrangement of operative conneotions leading to the Zone of the permuta tion lock, that the auxiliary locking device, although bodily movable normally with the door bolts but in latched set relation, will automatically be caused to itself positively maintain the door bolts locked, if the permutation lockis in any manner disrupted or should the connections" leading from the lthese prefacing remarks, therefore, reference ywill now be .immediately had to the accompanying drawings illustrating' a practical embodiment of the improvements, in which drawings like reference characters designate the saine parts throughout and in the views of which Figure l` is a detail face view of the auxiliary locking` device by itself, with its cover plate removed to show the internalelements in their inert withdrawn positions;

Figure 2 is a view analogous'to Fig. l, butwith the locks rbolt released and shot to ,its locking positions;

Figure 3 is a cross-sectional view on the line 3 -3 of .Figure l;

Figure al. is a fragmentary interior elevational view of a vault door with the im provements applied in operatively set position, and with the door bolts free to be movedby the door handle under control of the permutation lock; and

` Figure 5 is a view analogous to Fig. 4r, but with the auxiliary locking device sprung into effective locking position.

Referring first to Figures l to 3, in describing' the details of construction of the auxiliary locking device by itself, the numeral 1l. designates the lock casing which provides the bolt chamber l2 and a. base or lower edge face dange 13, the latter being adapted to be securely fastened to one of the door bolts, as by means of screws or bolts and holes therefor generally indicated at lll, and a cover plate iOis provided which is adapted to lbe attachedto the front, or otherwise open face of the casing, as by means of screws or bolts and holes therefor generally indicated at 9.

rlhe lower Wall of the casing proper is slotted as at 15 to allow for `the projection of a detent therethrough, as later referred t0, While the leper Wallet the @essere i auxiliary locking devicebe tampered with vides an aperture 16, also opening to the bolt chamber 12, in which operates a lug 'the lug 17 when operated, and a limiting offset shoulder 22, or equivalent stop element, for association with thecasing abutment shoulder 19. Normally, the lower end face of the lug 17 seats on the top face of the bolt 20, but drops in the recess 21 when the bolt is shot, as will be understood.

The rea-r or right end of the bolt provides a shank or extension 23, operating in a hollow nipple or projection 24, which hollow projection also partially houses a coiled spring 25 encircling the shank 23, the said coiled spring being so mounted and functioning under tension as to exert a. forward constant pressure on the bolt 20.

26 designates a latching recess opening downwardly from the bottom face of the bolt 20, which recess 26 is adapted for registration with the slot 15 of the casing to cooperate with the latching tooth or detent 3() projecting upwardly from a tripping lever 27 that is pivoted at one end, as at 28, to the flange 13 and which may provide at its other end an eye 29 or other means for the attachment of tripping wires or connections, leading to the zone of the permutation lock and hereinafter referred to.

Before specifically describing or referring to the operation and functioning of cert-ain other novel features involved in the present invention, it may bewell to first refer briefly to one type of vault door construction, as illustrated at Figures 4 and 5 with our invention applied, in which views 31 designatesthc inside face of a. vault door, with the interior cover plate removed if one is employed. These doors may have marginal ribs 32 apertured to slidingly mount the outer ends of laterally projecting door bolts 33-34, coupled at their inner ends by lever arms 35, and vertically disposed door bolts 36 also operatively coupled with the door bolts 33-34, all of which bolts are adapted to be actuated in unison in reverse directions as is understood, although it may not be amiss to briefly describe such operation as follows :-37 designates a vertical bar, bodily movable laterally by the operation of the outside vault door handle, and the door bolts 33 are secured to this bar 37 as by means of screws or bolts 38. The ban 37 also carries a stud or tumbler pin element 39 that operates in association with the tumblers of the combination or permutation lock 40, all of which is understood from the prior art and which in themselves form no feature of the present invention.

As has before been stated, the auxiliary locking device is securely attached to one of t-he door bolts so as to be bodily movable therewith under normal conditions, and as a matter of convenience we have shown this auxiliary lock as carried by the upper lateral door bolt 33, although by slight rearrangements it could be mounted on another one of the door bolts if desired, but in carrying out the invention an abutment element fixedly mounted on the door should be disposed at such a suitable distance away from the bolt shooting end of the auxiliary lock, in line therewith, so that the lock casing itself will not engage the abutment al though allowing for the end of the bolt 20 to engage the abutment element when the auxiliary lock is automatically shot- As a matter of fact, the particular type of vault door illustrated has a central longitudinal rib 41, which is apertured to slidingly mount the inner ends of the door bolts 33-34, and where such a central rib is employed it will also serve as the abutment element just previously referred to. lt is to b-e understood, however, that we do not limit ourselves to the use of this central rib element 41 as the exact form of said abutment, as a separate lug or any other suitable stop element could be'employed to function in an equivalent manner.

42-43 indicate a pair of flexible tripping connections, preferably formed of copper wire, the upper end of each of which is at tached to the tripping lever 27, ofthe auxiliary loclr, by means of the aperture 29 or a suspension plate element 44. The wire 43 is reeved around underneath a sheave 45, mounted on a stud pin 46, from whence it is led upwardly and is firmly secured to the lower end of a distended coiled spring 47, or analogous retracting element, which is held under return tension by means of a connection secured at its lower end to the vault door as is indicated at 49, the con nection preferably including a copper wire 48 fo-r its upper length, with the lower length embodying a fuse element, as indicated at 50, interposed in the line some.- where near the permutation lock and preferably extendingunderneath the tum bler pin 39, while 51 indicates a turnbuclrle element for tautening up this connecting line to regulate the tension of the spring 47. Obviously, there could be other extensions of the wire 48 with appropriate fuse elements located at other positions if desired, although it is believed that the` one fuse located as it is would sufce.

Operation. l y Now, if the auxiliary loclrs bolt QO'is set inwithdrawn latched position, as is illustiated at Figures l and 4f, it will be obvious that the vault door bolts may be `operated to their locking and unlocking positions, under the legitimate control of the main or permutation loclr 40, the auxiliary lock moving freely backend forthwith the upper lateral door bolt 33 to which it is xedly secured;

but assuming that the vault door is closed and locked by the door bolts, with `the permutation lock l0 set, and that an attempt .is made to burglarize the vault by the usual method of dislodging the. permutation lock oi' its tumblersJ then the auxiliary locking device will be brought into effective use, with its bolt 2O projected up against' the door abutment el, as will appear fromFigure 5 where the dotted circles of the permutation loclr indicate that the tumblerelements havebeen dislodged and the wire 42 disrupted, sothat the auxiliary locking device now holds the door bolts jammed in their locked position regardless of the disruption of the permutation lock, 0f course, from the foregoing it willbe understood that we are assuming that the burglar has dislodged the tumbler elements of the mainv lock by an explosive force or by drilling and i punching, which in disrupting` the wire l2 gives it a pull or tug that actuates` the lever 2? to release the detent 30 from its latcliing recess 26, thereby causing the spring 25 to shoot the bolt 20. j

However, the burglar is wise' and might iirst drill or burn a hole through the door :forthe vpurpose of clipping the connection #l2 if it be a wire, or cutting it otherwise if it be a stouter connection, before attempting todisrupt the combination loclr, and in that event there would be no pull on the connection 42, which is one .of the many objections to many ofthe auxiliary locks heretofore employed.

By the present improvements we additionally guard against such contingencies by the employment of the auxiliary connections including the elements 43`47*48-50, embodying in the line a fusible section that has substantial tensile strength but which instantly melts in the presence of generated heat. ln other words, if a torch were ap- 47, which latter would then exert the necessary pull or tug on the wire t3 to trip the lever 27. `Furthermore, the connections 48- 50, or `their equivalent, could beso associated with the permutation lock, that a disruption would occur upon t-lie dislodgment of the latter, whetliei' the disruption was effected by melting or otherwise, when the actuation of the wire t3 would necessarily follow with the same result as before explained.

It is believed that the full advantages of all of the foregoing novel features will be quite apparent, especially when we consider the extreme necessity of taking every precaution to mal-:e a vault orthe like as burglarproof as feasible, but while `we have thus fully set forth t-he improvements, it will nevertheless be understood that `we do not wish to unnecessarily restrict ourselves to all of the details exactly as disclosed, excepting as they may come within the terms of the ensuing claims, or equivalent elements employed, and as fairly interpreted in the light of the speciiication if necessary, as it is obvious that minor alterations mightrbe made without departing from the spirit or gist of the invention. f

llfhat we do claim is 1. `ln protective systems for the locking bolts of closures, providing a jamming abutment, and which bolts are under the control of a permutation main lock, the combination as new and patentable `of an auxiliary locking device mounted in `fixed relation to said bolts for bodily movement therewith in the zoneof said abutment, a bolt element for said device that is disposed for shooting into engaging association with said abutment, means tending to force said bolt element into its shot position, retaining means for normally holding said 'bolt element withdrawn, and connecting means leading' from said retaining means `into the zone of said permutation lock for tripping said retaining means by a dismantling` of said connectingmeans.

2. ln protective systems for the locking `bolts of closures, providing a jamming abut- 'inent, and which bolts are under the control of a permutation main lock, thi-)combination of an auxiliary locking device fixedlycar- `ried by one of `said bolts forbodily movenient therewith in the zone of vsaid abut-4 ment, a bolt element for said device that is disposed for shooting` into engaging association with said abutment, means tending to force said bolt element into its shot position, retaining means for normally holding said bolt element withdrawn,` and connecting means leading from said retaining means si 1,4ee,eao

into the Zone ot said permutation lock tor tripping said retaining means by a dismantling oi said connecting means. l

3. ln protective systems tor the looking bolts oit closures, providing a jamming abutment, and which bolts are under the control of a permutation main lock, the combination ot an auxiliary lock linee ly carried by one of said bolts for bodily movement therewith in the Zone oi said abutment, thesaid auxiliary loclr embodying a bolt, with latching means therefor, disposed under spring` tension to be shot into engaging association with said abutment, and connecting means leading from said latching means into the Zone olf said permutation loclr tor causing the tripping oit said latching means by an unauthorized dismantling action on said connecting means.

4. ln protective systems tor the locking bolts ot' closures, providing a amming abut-- ment, and which bolts are under the control ot a permutation main loclr, the combination of an auxiliary locking device mounted in lixed relation to said bolts tor bodily movement therewith in the Zone of said abutment, a bolt element for said device that is disposed tor shooting into engaging association with said abutment,v means 'tending to torce said bolt element into its shot position, retaining means for normally holding said bolt element withdrawn, and connecting means leading from said retaining means, including a fuse section disposed proximately ot' said permutation lock, which are so mounted and controlled as to trip said retaining means upon an unauthorized dismantling oit said connecting` means.

5. In protective systems tor the locking bolts of closures, providing a jamming abutment, and which bolts are under the control 'of a permutation main loclr, the combination of an auxiliary loclring device mounted in fixed relation to said `bolts 'for bodily movement therewith in the Zone of said abutment, a bolt element tor said device that is disposed torshooting into engaging association with said abutment, means tending to :torce said bolt element into its shot position, retainingA means ior normally holding said bolt element withdrawn, connecting .means leading troni said retaining means, including a fuse section disposed proxrimately ot said permutation loch, and connecting means leading from said retaining means and anchored at its other end tautly over the rear Zone ot' the tumblers ot said. permutation lock, both oit which said connecting means function as tripping means for said retaining means, substantially as described.

6. ln protective systems for the locking bolts of closures, providing a jamming abutment, and which bolts are under the control of a permutation lock, the combination ot an auxiliary locking device mounted in xed relation to said bolts tor bodily movement therewith in the zone ot said abutment, a bolt element for saiddevice that is disposed for shooting into engaging association with said abutment, means tending to torce said bolt element into its shot position, retaining means for normally holding said bolt element withdrawn, a spring mounted by said closure and having a free end, connecting means leading from the reeend of said spring, including a fuse section disposed proximately of said permutation loclr, for tautly holding said spring normally under retractile tension, a guidingelement associated with said spring, and a flexible connection leading from said retaining means to the free end of said spring by way ol said guiding element.

T. ln protective systems for the locking bolts of closures, providing a jamming abutment, and which bolts are under the control oit a permutation main lock, the combination of an auxiliary locking device mounted in fixed relation to said bolts for bodily movement therewith in the Zone of said abutment, a bolt element tor said device that is disposed for shooting into engaging association with said abutment, means tending to torce said bolt element into its shot position, retaining means tor normally holding said bolt element withdrawn, a spring mounted towards one end by said closure, connecting means leading from the tree end oi said spring, including a tuse section disposed noximately of said permutation lock, 'for normally holding said spring tautly under retractile tension, a guiding element associated with said spring, a flexible connection leading from said retaining means to the .iireeend of said spring by way ot' said guiding element, and a separate iiexible connection leading from said retaining means and anchored at its other end tautly over said permutation lock at the rear oi its tumbler zone, both of which said flexible connections function as tripping means tor said retaining means, substantially as described .ln testimony whereof., `we our signatures.

FRED L BETHGE, JOHN W1 STQBER.