Patent GB-238234-A (GB)
Title: Improvements in or relating to recording door locks
IPC: E05B39/04
Filed: 1925-08-05
Abstract: 238,234. International Time Recording Co. of New York, (Assignees of Bush, Le G. C.). Aug. 9,1924, [Convention date]. Roller-and-sheet recording apparatus; watchmen's clocks. - A time-recording lock mechanism which can be opened from the outside by any of a number of keys with end projections of differing lengths and from the inside by a square key and which can be used to record a watchman's visit without operation of the bolt, has type wheels co-operating with a platen so that a strip of paper records the time of operation of the lock. the key used, whether the lock is operated for locking or unlocking and whether the inside key or watchman's key was used. Further, the lock may be combined with supplementary fastenings and connected electrically therewith in such a way that the lock bolt cannot be shot unless those of the supplementary locks are shot. Fig. 1 shows a general view of the lock with the coverplate removed ; Fig. 2 is a section on the line 2-2 of Fig. 1; Fig. 3 is a view of a detail; Fig. 5 is a view of a record sheet; Fig. 8 is a view of the outside bolt-operating means and of the record-operating means; Fig. 11 is a diagram of the circuit employed when supplementary locks are used. The lock-bolt 30 is operated from the outside by a lug 28 on a barrel 27 keyed in a sliding plug 23 which is rotated by the connector bar 22 of a pin-tumbler lock 20. The lug 28 works in a slot 29 in the bolt and also operates a sliding tumbler 88 which locks the bolt in either position bv a lug 90 engaging notches 91 therein. As the bolt moves either backwards or forwards, a double cam 73 thereon engages a roller 74 on a lever 72<1> pivoted to the casing at its left-hand end, causing its right-hand end to lift the sliding member 60. This causes the slip pawl 59 thereon to rock the platen 57 about its pivot by engaging the shoulder 61 and slipping past it and also causes the pawls and ratchets 51, 55 to rotate the take-up rolls 49, 54 of the inked ribbon 50 and recording strip 52 respectively. As the platen swings back, it presses the strips against the type wheels and effects a record. The hour and days wheels 37, 38 are actuated by the minute wheel 36 via transfer mechanism 39 and the minute wheel is rotated by a lever 42 rocked at regular intervals by the armature 41 of the solenoid 40 which receives impulses from a current governed by a master clock. A type sector 44 is mounted with the type wheels to indicate which key is used. The sliding barrel 23 is cut away at 62 and has steps 63 at the end and an arm 64, Figs. 2 and 8, lies snugly in the cut-away part. When a key 21 is inserted it pushes the bar 22 and hence the barrel 23 a predetermined amount against the blade spring 24, the amount depending on the length of the end 21<a> of the key, so that when the barrel is turned to operate the bolt, the appropriate shoulder 63 engages and rocks the lever 64 on its pivot 65 rocking its arm 66 which engages a pin 67 on the sector 44, so that the type character corresponding to the key used is brought into the typing line and recorded' on the strip 52. The watchman's key 71 which operates the member 60 through the cam 72, does not actuate the barrel and does not rock the sector 44. A character such as W is formed on the sector in the typing line when in its position of rest and this records the character W on the strip 52 when the watchman's key is used. The bolt is operated from the inside by a square key 31 which turns a disc 32 carry- :ng lugs 33 which engage a recess 34 in the bolt. The arm 64 governing the key recording sector 44 has an extension 70 which is engaged by cams 69 on the disc 32 causing the sector 44 to be rocked sufficiently to bring a distinguishing character such as I thereon into the typing line to indicate that the door has been operated from the inside. A second type sector 45 with a lever 75 connected to a lever 80 by a spring 86 is formed with a single character such as L which is brought into the typing line only when the bolt is operated for shooting. A slip pawl 85 pivoted on the end of the lever 80 is engaged and pulled forwards by a lug 84 on the bolt when this is shot to bring this character into line with the platen 57. When the bolt is retracted the lug slips under the pawl without operating the lever 80 which is then moved by its spring to engage the lever 75 and move the character on the sector out of the typing line. The tumbler 88 has an extension which enables it to be operated by the inside follower 32. The lock can be connected electrically with supplementary fastenings 102, the switches thereof being open when the bolts are shot. The connections are as shown in Fig. 11. The current from source 99 flows at intervals governed by a switch 100 actuated by the master clock through the solenoid 40 and when the lock bolts 102 are shot, no current can pass through the solenoid 95. If one of these is left open, the corresponding switch is closed and current can pass through the solenoid 95 attracting the armature 94 so that lugs 93 on a disc 92 carried by the operating barrel 27 are arrested, preventing shooting of the bolt 30 until the supplementary bolt is shot. The lugs 93 are bevelled and the armature 94 arranged so that this effect only takes place for shooting the bolt 30. To economize current, a switch 96, 98, is included in the circuit and is closed by a cam 97 on the disc 92 so that current only flows round the solenoid 95 at the time of the attempt to shoot the bolt 30. The bolt 30 is made symmetrical so as to be reversible end for end for use with doors of either hand. The lug 84 is screwed into the hole 84a and the part 80<b> of the lever 80 reversed relative to the sleeve 80<c>.