Patent GB-104592-A (GB)
Title: Improvements in Recording Locks.
Inventor: ZIEHLER BERNARD HERMAN
IPC: E05B39/04
Filed: 1916-05-25
Abstract: 104,592. Ziehler, B. H. May 25, 1916. Locks operating registering-apparatus.-In a recording-lock, bolt-operating devices arranged on either side of a door are connected to a recording- apparatus in such a manner that a separate timerecord is made of the operation of either, while at the same time the operating-device on one side of the door is controlled by a key, the other being independent thereof. Means are provided (1) to prevent records from being printed by movement of the bolt-actuating device without movement of the bolt, (2) for preventing removal of the key when the bolt and its actuating-mechanism have been partly displaced, and (3) for preventing the record-bearing paper from being wound off without making records thereon. Records are made of the time and date of operation, the key whereby the operation is effected, and the direction of operation. The lock casing comprises plates 1, 2 arranged on the inside and outside of the door respectively, and a casing 5 normally locked, which encloses the mechanism arranged on the plate 1. The bolt 6 is slidably mounted on the plate 1 by means of pins 7 engaging slots 8, and is adapted to be actuated by members 9, 10 pivotally mounted on a common axis and each having cam-surfaces 12, 13 which engage a pin 14 and project or retract the bolt when operated. The members 9, 10 are actuated respectively by knobs 15, 16. The knob 15 operates the member 9, to which it is rigidly connected bv a shaft 17, without requiring the use of a key. The knob 16 actuates the member 10 through a shaft 19 co-axial with the shaft 17 and connected with a sleeve 20 of the knob by a pin and slot 21, 22. The bolt is normally locked against movement in either direction bv pawls 25, 26 engaging notches 24 in the bolt. These pawls have arms 27, 28 connected by a spring 29 and adapted to be engaged by cam-surfaces 30, 31 on the member 9 so as to release the bolt prior to the engagement of the pin 14 by the cams 13 or 12. In order to prevent the operation of the member 9 twice in the same direction, recesses 32, 33 are provided into which the pawls 25, 26 drop, thus throwing their respective arms 27, 28 into the path of the cam 13 or the cam 12, as the case may be. The recording-mechanism comprises a clock 34 and time-registering device of known construction having a printing-dial 35 co-operating with a platen 36 operated by the bolt-actuating means through a plunger 37, which is attached by a stem 43 to a spring-controlled plate 39 engaged by rollers 41 on the bolt-actuating means, a spring 46 being interposed between the platen and the stem 43. The plate 39 is secured to a plunger 42 sliding in the support 38 of the plunger 37. The record sheet consists of a strip of paper wound from a roll 48 on to a roll 52, the latter being automatically actuated by means of a pinion 58 engaged by a toothed rack 59 of a lever 60. in which is a slot 61 engaged by a pin 62 projecting from the rod 42. The pinion 58 is connected with the roll 52 by ratchet mechanism 63. An ink ribbon 53 is mounted on spools 54 rotatable by knurled heads 57. Means for preventing the feeding of the record strip without leaving a record by short movements of the platen consists of a full-stroke device comprising a pivoted spring-pressed pawl 64 engaging teeth 65 on the bar 42 and preventing its return motion until released by the contact-piece 68 engaging an arm 67. The pawl is then held out of engagement by a spring pawl 69 engaging a tail-piece 70 until the return stroke is completed, whereupon the pawl 69 is tripped by a contactpiece 72 on the plunger 37. The spindle of the knob 16 is normally locked, and can be released by means of a key. The locking- means comprises a disk 73 having a notch 74 engaged by the nose 75 of a pivoted arm 76, which also has a nose 78 engaging a cam 79 mounted on a key barrel 80. A pivoted finger 82 which engages a stop 81 on the cam prevents the rotation of the key barrel and removal of the key until the knob 16 and bolt-actuating mechanism have been operated. This is effected by means of an arm 84 in one with the finger 82, which engages a cam 88 attached to the locking-disk 73 and is connected to the arm 76 by a spring 77 attached to a stud 85 projecting through a slot 86, in combination with a full-stroke device 83 of known type, part of which is formed by the cam 88. The motion of the cam 79 is limited by a stop 90 engaging shoulders 91, 92. In order to record the particular key employed in opening the lock, a sliding spring- pressed bar 93 bearing numerals &c. is provided, the end 95 of which is engaged by the keys, which are of varying length, so that a numeral on the bar associated with the particular key is moved into printing position. The clock is mounted in a removable frame which is locked bv a spring latch 98 having a releasing finger-piece 101. In a modification, a bolt 105 is moved by a two-armed member 109, 110 which engages a stud 108, the bolt being locked by pawls 106 released by pins 112. Record is made by a series of type-wheels 113. 115, 116. The wheels 113 are set bv a clock 114 for the time and by hand for the date; the wheel 115 prints the key-identifying mark, and the wheel 116 the direction-indicating mark. The indication of direction is obtained by means of a pair of levers 123, 124 carrying platens 136, 137, one of which is of insufficient length to print from the wheel 116, so that a blank is left when the actuating-member is turned in the direction that causes this platen to move over the type-wheel. The actuating-device can always be operated by the handle 141 inside the door, but only by the outside handle 142 after the operation of a key which operates a clutch device. This comprises disks 144, 145 on the shafts of the handles 141, 142, which have alined slots 146 adapted to be engaged bv a pin 147 carried in a curved slot 152 in the head of an arm 148, which is moved bv a cam 159 engaging a pin 160 and mounted on a hollow shaft 149 alined with the key barrel 155 and clutched thereto by the insertion of the key, which engages a slotted extension 157. A full-stroke arrangement for this mechanism consists of a ratchet disk 161 engaged by a pawl 162 actuated bv a rock lever 165, the end 166 of which is engaged by pins 167 on the disk 144. The key-identifying arrangement comprises a shaft 156 within the hollow shaft 149 connected to the type-wheel 115 and carrying an extension 169 having thereon stepped stops 170, which engage the key and limit its motion and that of the type-wheel, according to the length of key used. The shaft 156 is actuated by the handle 142 through yielding rods 174, so that its motion is the same in whichever direction the handle is turned.