Transfer device
This is a continuation of application Ser. No. 07/770,154, filed Oct. 3, 1991 which was abandoned upon the filing hereof; which in turn is a continuation of application Ser. No. 07/582,644, filed Sep. 13, 1990, now abandoned. 
    
    
     BACKGROUND OF THE INVENTION 
     This invention relates to a security transfer device for transferring valuables between a vehicle and a building such as a bank, or another vehicle. 
     Armored security vans are commonly used to transport cash between banks and to collect or deliver cash at supermarkets, factories and the like. While the security vans themselves may be relatively secure at each destination cash is usually carried by security guards between the van and the bank or other building. During this cash transfer operation the guards are particularly vulnerable to robbery and attack by thieves whom nowadays are generally well armed. 
     BRIEF SUMMARY OF THE INVENTION 
     The present invention is directed towards overcoming this problem. 
     According to the invention there is provided a security transfer device for a building and a vehicle each having a transfer opening in a face thereof, comprising a duct on a support frame for mounting behind one face, the duct being movable through the opening to abut against the other face to surround the other opening, and a releasable stop for retaining the duct against the face. 
     In one embodiment of the invention the stop comprises a ratchet mechanism. 
     In a preferred embodiment a lockable security closure member is provided within the duct. 
     Preferably a locking device is provided for the security closure member comprising a bolt mounted in the duct and engagable with a receiver in the closure member, the bolt spring being biased out of engagement, the bolt incorporating a cam follower engagable with a cam on the support frame, the cam having a profile defining a locking position with the duct in the retracted position. 
     In a further embodiment an additional duct inner end closure member is provided by a back plate on the support frame, and a locking mechanism is provided to lock the duct to the closure member. 
     In another embodiment the ratchet mechanism comprises a rod rotatably mounted on the support frame, the rod having a serrated shank slidable within a complimentary ratchet cylinder mounted on the duct, the ratchet cylinder having a pawl for engagement with the serrations on the rod, the rod being rotatable within the ratchet cylinder for disengagement of the pawl, a cam follower on one of the rod and the ratchet cylinder for engagement with a cam on the other of the rod and the ratchet cylinder, the cam having a profile defining an engaged position with the duct retracted. 
     In a further embodiment an electric motor drive is provided for movement of the duct on the support frame. 
     In another embodiment the duct is slidably mounted on the support frame by track means comprising a number of rollers mounted on one of the duct and the support frame, the rollers rotatably engaging associated tracks on the other of the duct and the support frame. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     The invention will be more clearly understood from the following description of some embodiments thereof, given by way of example only, with reference to the accompanying drawings, 
     FIG. 1 is a side elevational, partially cross-sectional view of a security transfer device according to the invention, shown mounted in a wall; 
     FIG. 2 is a front elevational view of the transfer device; 
     FIG. 3 is a rear elevational view of the transfer device; 
     FIG. 4 is a detail partially cross-sectional side view of portion of the transfer device; 
     FIG. 5 is a detail partially cross-sectional plan view of another portion of the transfer device; 
     FIG. 6 is a detail partially cross-sectional side view of a ratchet mechanism forming portion of the transfer device; 
     FIG. 7 is a partially cross-sectional front detail view showing a track for slidably supporting a duct in the housing of the transfer device; 
     FIG. 8 is a detail side view of the track from the right of FIG. 7, 
     FIG. 9 is a side elevational view of another embodiment of the security transfer device according to the invention; 
     FIG. 10 is a similar to FIG. 9 with a duct portion of the device shown in a retracted stored position; 
     FIG. 11 is a front view of the transfer device of FIG. 9; 
     FIG. 12 is a rear view of the transfer device of FIG. 9; 
     FIG. 13 is a partially partially cross-sectional view of the transfer device of FIG. 9 taken along the line XIII--XIII of FIG. 11, the transfer device being shown in use mounted in a wall of a building; 
     FIG. 14 is a detail side elevational view of a ratchet portion of the device; 
     FIG. 15 is a detail side elevational view illustrating a locking device for the duct; and 
     FIG. 16 is a side elevational and partially cross-sectional view of another security transfer device, shown in use. 
    
    
     DETAILED DESCRIPTION 
     Referring to the drawings and initially to FIGS. 1 to 8 thereof, there is illustrated a security transfer device according to the invention indicated generally by the reference numeral 1. The security transfer device 1 comprises a duct 2 slidably mounted within a support frame which in this case comprises a housing 3. The duct 2 is movable between a retracted stored position, within the housing 3, and an extended in-use position as shown in FIG. 1. A ratchet mechanism indicated generally by the reference numeral 4 extends between the duct 2 and the housing 3. 
     The housing 3 is of rectangular cross section having a bottom 6, upstanding side walls 7, a top 8, a flanged inner end 9 and a flanged outer end 10. A lockable door 12 closes the inner end 9. 
     The duct 2 is also of rectangular section having a base 15, side walls 16, a top 17, an open flanged front end 18 and a roar end 19 closed by a lockable security door 20 typically of bullet-proof steel. It will be noted that the base 15 slopes upwardly between the front end 18 and the rear end 19. FIG. 1 shows the security transfer device 1 mounted in an opening 22 in a wall 23 of a building such as a bank, the wall 23 having an inside face 24 and an outside face 25, the duct 2 being mounted on the housing 3 behind the outside face 25 and movable through the opening 22. A handle is provided on an inside face of the security door 20. 
     A track device means for slidably mounting the duct 2 in the housing 3 comprises a pair of horizontal tracks 26 fitted centrally on outside faces of the side walls 16 of the duct 2. Each track 26 has an upper slot 27 and a lower slot 28 extending along its length to receive rollers 29 mounted on the interior faces of the side walls 7 of the housing 3. As will be seen from FIGS. 7 and 8 the rollers 29 are arranged in a number of spaced-apart pairs, each pair of rollers 29 receiving a track 26 therebetween. 
     Referring now in particular to FIG. 4. A conventional deadlock is provided on the security door 20. In addition to this, an L-shaped locking bolt 30 is pivotally mounted on a top 17 of the duct 2 at the rear end 19 of the duct 2 by a bracket 31 and pivot pin 32. An outer end 34 extends through a hole 35 in the top 17 for engagement with a complementary receiver slot 36 provided in an upper edge 37 of the security door 20. A leaf spring 39 mounted on the top 17 of the duct 2 engages an underside of the locking bolt 30 urging the locking bolt 30 upwardly towards a retracted disengaged position. A cam block 40 projects inwardly of the top 8 of the housing 3 and has a sloped front face 41 and a bottom face 42 which together form a cam surface for engagement with a back 43 of the bolt 30 which forms a cam follower to urge the locking bolt 30 against spring bias into engagement in a locking position with the receiver slot 36 when the duct 2 is in the stored position as illustrated in FIG. 4. 
     Referring now to FIG. 5, at the inner end of the housing 3 a channel 45 is formed at the side walls of the housing 3 for reception of the inner end 19 of the duct 2. The door 12 is mounted by a hinge 46 at one side of the housing 3. A number of hinge bolts 48 extend outwardly of a hinge side 49 of the door 12 for locking engagement through openings 50 in an inner side wall of the channel 45 with slots 52 in the inner end 9 of the duct 2 when the duct 2 is in the stored position illustrated in FIG. 5. 
     Referring now to FIG. 6 in which the ratchet mechanism 4 is illustrated, the ratchet mechanism 4 comprises a rod 55 rotatably mounted on the housing 3 and having a serrated shank 56 with ratchet teeth 57 and an operating knob 58 at an end of the rod 55 extending rearwardly of the housing 3. A spigot 59 forming a cam follower extends laterally of the rod 55 between the shank 56 and the knob 58. A complementary ratchet cylinder 60 is mounted on the base 15 of the duct 2. The ratchet cylinder 60 has an inner end 61 housing a pivotable pawl 62 for engagement with the ratchet teeth 57. It will be noted that the pawl 62 slides over the teeth 57 as the duct 2 is moved from a stored position to an extended position; however, the pawl 62 engages the teeth 57 to prevent movement of the duct 2 back into the housing 3 from an extended position towards the stored position. The rod 55 is rotatable within the ratchet cylinder 60 to disengage the pawl 62 from the ratchet teeth 57 to allow retraction of the duct 2. Upon retraction a cam surface 65 on the inner end 61 of the ratchet cylinder 60 engages the spigot 59 to rotate the rod 55 into a normal operating position in which the ratchet teeth 57 are aligned with the pawl 62 as the duct 2 approaches the stored position, the pawl 62 engaging against the rod 55 forwardly of the ratchet teeth 57. 
     In use, the security transfer device 1 is mounted in an opening 22 in wall 23 of a bank or other building as shown in FIG. 1. When in the retracted stored position the duct 2 is locked within the housing 3 by the hinge bolts 48 of the door 12. Both the security door 20 on the duct 2 and the door 12 on the housing 3 are closed and locked, To transfer cash or other valuables using the security transfer device 1 a security van parks alongside the outside face 25 of the wall so that an inlet opening in a face of the security van through which money is delivered is directly opposite the duct 2. Then a person inside the bank opens the door 12 on the housing 3, thus releasing the duct 2 and pushes the duct 2 outwardly from the retracted stored position within the housing 3 to the extended in-use position in which the outer end 18 of the duct 2 abuts the face of the security van surrounding the inlet opening on the security van. The duct 2 is pushed outwardly until it engages against the side of the security van. It will be noted that the ratchet mechanism 4 automatically locks the duct 2 in the extended position preventing the duct 2 from being pushed back into the housing 3 from outside the building. As the duct 2 is moved forwardly the locking bolt 30 for the security door 20 (see FIG. 4) moves clear of the cam block 40 and the leaf spring 39 pivots the locking bolt 30 upwardly into a disengaged position. When the duct 2 is engaged against the security van the security door 20 at the rear end 19 of the duct 2 is opened and cash and/or other valuables can be transferred between the bank and the security van through the duct 2. Having completed the cash transfer the security door 20 is closed and locked. Then the rod 55 of the ratchet mechanism 4 is rotated by the knob 58 to release the ratchet mechanism 4. Now the duct 2 can be withdrawn into the housing 3 and returned to the stored position. As the duct 2 is withdrawn the spigot 59 on the rod 55 abuts and rides over the cam surface 65 to automatically realign the ratchet mechanism 4 into the normal operating position. Finally the door 12 on the housing 3 is shut and locked, the hinge bolts engaging the slots 52 at the inner end 19 of the duct 2 to lock the duct 2 within the housing 3. 
     It will be appreciated that the security transfer device 1 allows a direct transfer of cash between the bank and the security van and the security guard within the security van and bank personnel are well protected against any robbery attempt throughout operation of the security transfer device 1 and the cash transfer. 
     It will also be noted that in some cases the housing for the duct may be integrally formed with the wall of the building. 
     While in the embodiment described herein the security transfer device is shown mounted in a wall of a building, it is also envisaged that in some cases the security transfer device may be mounted on a security van or truck. 
     Referring now to FIGS. 9 to 15, there is illustrated another security transfer device according to the invention indicated generally by the reference numeral 70. The security transfer device 70 is largely similar to the security transfer device described previously with reference to FIGS. 1 to 8 and like parts are assigned the same reference numerals. 
     In this case the ratchet mechanism indicated generally by the reference numeral 80 is mounted within the housing 3 and extends between the duct 2 and the housing 3. The ratchet mechanism 80 comprises a rod 81 having a serrated shank 82 which is slidable and partially rotatable within a complimentary ratchet cylinder 83. The ratchet cylinder 83 is attached to the base 15 of the duct 2 and rod 81 is supported in a bracket 84 at an inner end of the bottom 6 of the housing 3. The rod 81 has an operating handle 85 at it&#39;s inner end. 
     FIG. 15 shows a locking device for locking the duct 2 in the stored position. The locking device comprises a latch 88 having a front end 89 pivotally mounted by a pivot pin 90 on a bracket 91 depending from the base 15 of the duct 2. A hooked rear end 92 of the latch 88 is releasably engagable with a catch member 93 upstanding on the bottom 6 of the housing 3 adjacent the inner end of the housing 3. A pin 95 extends upwardly from the latch 88 passing through a hole 96 in the base 15 of the duct 2, the pin 95 being used to move the latch 88 to disengage it from the catch member 93. Engagement of the latch 88 with the catch member 93 is shown in broken outline in FIG. 15. 
     The security transfer device 70 is operated in similar fashion to the security transfer device described previously with reference to FIGS. 1 to 8. In this case, however, the duct 2 is locked in the stored position by the locking means shown in FIG. 15. As the duct 2 is withdrawn the hooked end 92 of the latch 88 abuts and rises over the catch member 93 to automatically engage the catch member 93. 
     Referring now to FIG. 16 there is illustrated another security transfer device according to the invention and indicated generally by the reference numeral 100. The security transfer device 100 comprises a duct 102 slidably mounted within a housing 103 fixed in a wall 104 of a bank for example. The duct 102 is movable between a retracted stored position within the housing 103 and an extended in-use position as shown in FIG. 16 in which an outer end 105 of the duct 102 abuts and surrounds a rim of an inlet opening 110 on a security van 111. An electric motor drive mechanism 112 is provided within the housing 103 to move the duct 102 between the stored position and an extended position and comprises a braked electric motor 113 driving a pinion 114 which engages a rack 115 on the duct 102. An opening 116 is provided in a top 117 of the duct 102. In an extended position the opening 116 locates beneath an outlet 118 of a chute 119 through which cash or other valuables are delivered from the bank to the van 111. 
     The invention is not limited to the embodiments hereinbefore described which may be varied in both construction and detail.