US1806953A - Burglaky protection system - Google Patents

Description

, May 26, 1931. w. SACHS 1,806,953

BURGLARY PROTECTION SYSTEM Filed April 10. 1928 3 Sheets-Sheet l I Q y g Q mm $3, 33 g \3 x FIG'ZI.

% IN VEN TOR:

May 26, 1931. w. sAcHs 1,306,953

BURGLARY PROTECTION SYSTEM Filed Apr-11x10. 1 92s 5 Sheets-Sheet 2 FIG H WITNESSES 56 INVENTOR:

ATTORNEYS. v

5 Sheets-Sheet 3 Filed April 10, 1928 INVENTOR: Wander flaws,

ATTORNEYS Patented May 26, 1931 f UNITED STATES PATENT OFFICE i wanna sAons, or LANCASTER, PENNSYLVANIA nunenany rno'rnorron SYSTEM iAppQIicatiOn filed April 10,

This invention relates to systems for prevention of burglary, and'more'particularly to a type useful in banks or other monetary institutions; I v

The purpose of my invention is to enable, in the event of a burglary attempt, to care for all possible contingencies attendant upon such a situation: in other words, I aim to provide a 'safetysystem whereby the culprit 20 fragmentary view of the approach to a tellers window in a bank equipped with my im-v proved protection system. i l

r Fig. II is a transverse sectional view, taken as indicated by the arrows II-II inFig. I.

Fig. III is a plan view of the various parts delineated in FigI.

Figs. IV, V, VI and VII, are fragmentary sectional views showing certain details associa-ted withburglar trapping doors fea- 3 tu'red-in my invention.

' Fig} VIII is a fragmentary detail view showing the means for releasing the'doors for automatic closure to trap the burglar; and,

Fig. IX shows awirin-g diagram and the various electrically controlled elements em-f' bodied in the system. f

7 With reference "first more particularly to Figs. I, II and III,*10- indicates a partition such as ordinarily employed in banks to set apart the space occupied bytellers, clerks, etc. Each tellers window, one of which is shown at 11, is equipped with a vertically sliding sash12'embodying a metal frame with a bulletproof glasspanea As shown in Fig. II,'the sash is provided at the back with a series of teeth 13,- and is normally held in raised position by a hook catch 14 engaging the uppermost tooth, said catch being fulcrumed'on afixed stud 15; A spring pressed detent 16 also-"cooperates with the teeth 1 3 to 1.92s. serigl'no. 268,924.

lock the sash 12 in downposition upon'being released from thecatch l ia s hereinafter de scribed. A small area of the floor space im-' mediately in front of the tellers window 11 is occupied bya'metallic mat 17 w'hichis 5h overhung by a pair of doors 18, which are. swingable on hinges 19 secured to columns- 20 of the partitioning 10, said hinges having incorporated springs 19a, see Fig. VI, tending to move the doors 1 8 inward or toward 6! I each other. The doors 18 are-constructedfrom armor plate with comparatively small bullet proof sight glasses 18a, and-are nor'-' mally held in the parallel open relation-- shown in full lines in Figs. I, II and III- against the action of the springs 19a in their hinges 19, by stopfingers 21. 'llhese stop: fingers 21 are-respectively pivoted, as shown at 22 in Fig. VIII, beneath the plate 17 and joined at points below their pivots by a 'rod 23 for the purposes of simultaneous actua tion; while their upper ends protrude throughopenings 24in saidplate'tointercept the doors 18. When released to the hinge springs 19a through retraction of the stop fingers 21',-

it will be seen that the doorsif18'will automatically swing to the angularpositions shown in dotted lines'in Fig. III with their free edges contacting and forming a triangular trap before the tellers window 11. Incidental to such inward movement,-' bolts 25 concealed in the doors 18 adjacent their frontal edges, automatically drop into sockets 26 in the floor plate 17, see FigJIV. The drop of the bolts'25 as just explained is in- 3 sured through helical springs 27 (Fig.- V) in compression between abutments 28' in the door structures, and circumferential 'projec tions or collars 29 on said bolts. The'springs 27 are sufficiently powerful to overcome' the resistance ofsmaller springs 30 within the sockets 26 (Fig. IV),'the latter "beingefi'ective to normally hold plungers31 with their tops flush with the upper surface of the ifloor plate 17 as shown in'Fig.'VII. Therplungers 31 are held to true vertical movement by axial guide studs 32 secured in the bottoms of the sockets 26 and provided with-trans= verse pins'33 which extend intormotion limiting slots34: in the plungers- 31. Travel of .9?

the bolts 25 over the top of the floor plate 17 is facilitated through provision of rollers 35 at their lower ends, see Fig. IV. To enable subsequent disengagement from the sockets 26, the locking bolts 25 are equipped with lifting knobs 25a which are accessible from the out sides of the trap doors 18.

As a convenient means to control release of the window sash 12 and the trap doors 18 in the event of a burglary attempt, I preferably employ electric means herein shown as having the form of solenoids 35, 36. By reference to the wiring diagram of Fig. XI, it will be observed that the solenoids 35, 36 are connected in parallel with conductors 37, 38 together with a general alarm means in the form of a bell 37 and an electrically controlled tripping means 40 for the entrance doors (not shown) to the bank building, which doors may be of the same construction and operative in the same manner as the trap doors 18. There may of course be additional bells connected to the conductors 37, 38 if desired or required. Interposed between conductors 37, 38 and the power or line wires shown at 41, 42 having inserted fuses 43, 44 is a three plate magnetic switch 45, the magnet coil 46 of this switch connected in a separate circuit 47 receiving current from the line wires 41, 42,.said circuit being normally open as a consequence of its termination in an overhead separated contact means 48 located in the tellers enclosure, see Fig. II. This contact means maybe in the form of a false ceiling consisting, for example, of two spaced bare wire screens conventionally indicated at 48a, 48b in Figs. II, IX. I may also provide in the tellers enclosure a push button switch 50 (Fig. IX) as an auxiliary means to close the circuit 47 and also a nor-, mally closed cancelling switch 51 functional in a mannerlater on explained.

The operation of my protective system is as follows: Inthe event that a hold-up man presents himself at the front of the tellers window 11 with the demand that the teller hold up his hands, the latter complying, touches the false ceiling 48 within his enclosure, thereby bringing the screens 48a 48?) into contact and closing the circuit 47. As a consequence, the magnet 46 of the switch 45 is energized to effect closure of the switch contacts for supply of current from the line wires 41, 42 to the conductors 37, 38; This action results in sounding of the alarm 37 and energization of the solenoids 35, 36 and 40 with attendant release of the tellers window sash 12, which is thereafter held locked by the detent 16, release of the trap doors 18 to automatically close in upon the burglar and release of the bank doors to close in a like manner. The hold-up man is thereby made a prisoner and rendered absolutely helpless against the use of fire arms or other weapons due to the armored construction of the trap doors 18, while the teller is protected by the bullet proof glass sash 12 now down over his window 11. With the arrival of help summoned through sounding of the signal 37, the prisoner may be subdued in any suitable manner, for example by throwing of a tear bomb into the trap. To enable subsequent removal of the prisoner, the cancelling switch 51 is opened with consequent de-energization of the magnet coil 46 to permit the bridging contacts of the switch 45 to move back to the position illustrated. Upon lifting of the locking bolts 525 from the sockets 26 in the floor plate 17 by means of the knobs 25a, the trap doors 18 may be swung open to the normal position, and the prisoner apprehended.

Having thus described my inventionI' l. The combination in a burglary. protection system for banks and the like of opposingly-swingable bullet-proof doors at opposite sides of the front of a tellers enclosure, means tending to swing the doors toward each other, means to normally hold the doors in open position, trip devices controlling the door holding means, an associated trip normally retaining a bullet-proof sash elevated at the inner side of the tellers window, and overhead electric contact means within the tellers enclosure in circuit with the trips aforesaid and operative to release both doors so as to form a triangular trap and concurrently release the sash for gravity closure.

2. The combination in a burglary protection system for banks and the like of opposingly-swingable bulletproof doors at opposite sides of the front of a tellers enclosure, springs tending to swing the doors towards each other, means to normally hold the doors in open position, automatically actuated bolt means to arrest the doors in closed position, electric trips controlling the door holding means, an associated trip normally retaining a bullet-proof sash elevated at the inside of the tellers window, means to lock the sash in lowered position when released, and overhead contact means within the tellers enclosure in circuit with the trips aforesaid and operative to release both doors to form a triangular trap and concurrently release the sash for gravity closure.

3. The combination in a burglary protection system for banks and the like of opposingly swingabl'e bullet-proof doors at opposite sides of the front ofa tellers enclosure, springs tending to swing the doors towards each other, means to normally hold the doors in open position, automatically actuated bolt means to arrest thedoors in closed position, electric trips controlling the door holding means, an associated trip normally retaining a bullet-proof sash elevated at the inside of the tellers window,'means to lockthe sash in lowered position when released, overhead contact meanswit'hin the tellers enclosure in

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