US2780088A - Door lock for automaton for delivering benzine, oil, or other goods - Google Patents

Description

Feb. 5, 1957 NABElT 2,780,033

DOOR LOCK FOR AUTOMATON FOR DELIVERING BENZINE, OIL OR OTHER GOODS Filed F613. 27, 1955 /5 m 249 J k E: I I

Pr H I ll Phil 1g- 4-- DOOR LOCK FOR AUTOMATON FOR DELIVERING BENZINE, OIL, OR OTHER GOODS Ivar Nabeit, Vallemyrene, near Porsgrunn, Norway Application February 27, 1953, Serial No. 339,388

Claims priority, application Norway March 4, 1952 i 6 Claims. c1. 70-389) This invention relates to improvements in locks. During the night or late in the evening when filling stations are closed, one cannot obtain gasoline, benzine, oil and the like.

The present invention has for its purpose to remove this inconvenience by the provision of an automaton including an improved lock.

In the station there may be arranged for instance a cabinet with a row of doors each closing a compartment, wherein is placed the goods to be sold, such as pots containing benzine, oil or the like. The cabinet may for instance be so positioned in the station wall that only the exterior wall with lockable compartments are accessible. The locks in these doors are provided with special locks for special keys, and these are so devised that by turning the key in lock-opening direction a blocking against backward turning in lock-closing direction and against withdrawing of the key takes place and that the mechanism effecting the blocking is accessible only to the attendants of the automaton to release the key. The blocking during the turning of the key in lock-opening direction takes place before the lock has been moved into complete opening position, and after the complete opening of the lock and the then succeeding turning of the key in lock-closing direction a blocking takes place also against turning the key in lock-opening direction shortly before the position is reached, wherein the first blocking of the key took place.

A bolt arm turned by the key for moving a lock bolt during the first part of the movement in lock-opening direction retains against spring-action a disc or the like and is passed free of same only when the blocking position is reached wherein the disc by the spring action is snapped into the path of the bolt arm for blocking the backward movement of the arm in lock-closing direction. A lock bolt for the special lock during the movement of the bolt in lock-opening direction displaces a shoe and thereby prepares the second blocking by means of a blocking arm, so that the latter falls down behind the bolt and blocks it against new movement in lock-opening direction shortly before the bolt during its backward movement in lock-closing direction has reached the position wherein the first blocking took place. The shoe which is guided in a guide in the lock case is provided outside same with a handle or the like only accessible to the attendants whereby the shoe can be moved by them back into initial position.

Keys for the automaton can be sold to the customers whereby the customer can then obtain a pot containing a quantity of fuel corresponding to What he pays for the key. If the customer has opened the compartment door by the key he has bought, he cannot take it out again and consequently cannot open additional doors with this key.

The system may be such that a firm may have unattended fuel stations provided with such cabinets in diiferent localities and sell keys from ditferent places,

nited States Patent 2,780,088 Patented Feb. 5, 1957 and these keys may then be used at any of said unattended stations.

The keys can be prepared as standard keys so as to be useful for a definite quantity of fuel. Keys may be produced for other quantities as well.

The invention is illustrated in the accompanying drawing in which: Figs. 1 and 2 respectively show a cabinet as seen from the front and from the side. Fig. 3 shows a section on the line 33 of Fig. 1. Fig. 4 shows a top plan view of a special lock fastened to the inside of a cabinet wall in accordance with the invention. Fig. 5 shows the same lock seen in direction of the arrow A in Fig. 4. Fig. 6 shows a section of the special lock on the line 6-6 in Fig. 4.

Each cabinet compartment is provided with a closing device having a blockable special lock, the key hole of which is indicated at 11 in Fig. 1.

The cabinet shown in Figs. 1 and 2, has as an example eight compartments, whose doors 1 are hinged at 2 and provided on the inside with a hook 3 catching over the exterior end of the lock bolt 4 of the special lock 5 (Fig. 3).

This is attached on the inside of the cabinet wall, which has at 6 a hinged door 7 of the cabinet wall. This door is locked for instance by means of a Yale lock (not shown), whose key hole is indicated at 8 in Fig. 2 and which must be accessible only to the attendants of the benzine station. The special lock 5 may be executed in several manners. Figs. 4-6 show an example.

In Fig. 4 a portion of the fixed front wall of the cabinet is indicated at 9. To the inside of this portion 9 of the wall the special lock 5 is attached. Parts of the lock case are indicated at 10, 10' and 10". The bolt 4 is movable to and fro in one end piece 10 and in an intermediate piece 10" of the case. The arrow 11 indicates where the key for an ordinary lock of the Yale type is put in. This lock itself is not shown, but when the key is turned, a bar 12 (Fig. 5) extended into the special lock, is turned correspondingly in counterclockwise direction (seen in Fig. 5) and thereby turns a bolt arm 13, which acts upon a link 15 pivotly connected with the bolt at 14 and thereby moves the bolt 4 to the right to open the lock, so that the door 1 may be opened. During this turning the arm 13, which lies behind a disc 17 upon a bolt 19 under influence of the compression spring 18 is moved to the side (to the right in Fig. 5), so much that the arm 13 releases the disc 17, whereby the spring 18 presses the bolt with the disc upwards in the top piece 10 of the lock case in order to block the bolt 4 and thereby the key against turning backwards and withdrawal. During the further turning of the key the bolt 4 is moved further back and will then move with it a shoe 20 which is guided in 21 on the lock frame (Fig. 5) until the bolt 4 stops by the arm 13 striking against a projection 34 in the lock case (Fig. 5). During this backward movement of the bolt a point 32 (Fig. 6) on the under side of a downwardly projecting nose 24 on the end of a blocking arm 26 turnable at 25 is lifted and slides on the topside of bolt 4 under pression of a spring 27 acting on arm 26. The lock is now completely opened, and the door 1 can be swung out upon the hinges 2, the benzine pot 22 (Fig. 3) taken out and emptied by the customer. He places the empty pot into the cabinet again, shuts the door and tends to turn the key and thereby to move the arm 13, the link 15 and the bolt 4 forward again, but thereby the arm 13 now will stop against the edge of the disc 17. In this position the exterior end of the bolt has arrived partly beneath the hook 3 on door 1, but the key can not be withdrawn.

Moreover, the nose 24 of arm 26 is by means of spring 27 swung with its inclined plane 23 down upon the inclined plane 29 of the shoe (Fig. 4) behind the inner (right) end of bolt 4 and blocks the bolt against new movement backwards. Consequently, the bolt is blocked against movement to the left by disc 17 and to the right by nose 24.

When the attendants of the benzine station later on insert a new pot 22 into the cabinet, the wall door 7 is unlocked and opened. The attendant can then by handle 28 on shoe 2t) push the shoe forwards again (to the left) to the position shown in Fig. 4. During this movement the inclined plane 29 on shoe lifts arm 26, sothat it can no more block the movement of bolt 4 to the right. Further, a point 23 on the underside of 24 falls into a recess 33 on the top side of shoe 2.0.

By means of the key he can therefore move the bolt and the shoe backwards and open the door 1, insert a new pot 22 and shut the door. Then he depresses knob 31 on bolt 19 so that disc 17 releases arm 13. The key can then again be turned and the bolt 4 be moved back into complete blocking position, whereafter the key is withdrawn, the shoe 20 again pushed forwards and the cabinet is in order for the next customer. The parts are again in the initial position shown in Fig. 4.

I claim:

1. A lock for a door of a cabinet adapted to be opened by a key and particularly to be used in connection with an automaton for delivering benzine, oil and the like, comprising a lock bolt which is openable by the key which can be inserted into and removed from the look only with the bolt in its fully closed condition, first means which, with the bolt moved to a predetermined position by the key in lock opening direction, is made operative to block return motion of the bolt from said predetermined position before said bolt is moved to its fully open condition and second means which, with the bolt moved by the key to its fully open condition and returned by the key in lock closing direction, is operative to block the bolt from being moved back in look opening direction before the bolt has reached the position in which said first blocking means becomes operative.

2. A lock according to claim 1; wherein the lock bolt is slidable and said lock includes an arm swingable by turning of the key in the lock and a link between said arm and bolt to convert swinging of said arm into sliding movement of said bolt; and wherein said first blocking means includes a blocking member movable between an inoperative position out of the path of travel of said swingable arm and a blocking position interposed in said path of travel of the arm and spring means yieldably urging said blocking member toward said blocking position thereof, said arm, when the lock bolt is in its fully closed position, riding against said blocking member to hold the latter out of said path of the arm so that, as said arm swings in the lock opening direction, said arm moves olf said blocking member to permit movement of the latter to said blocking position where it prevents return of said arm to the position corresponding to the fully closed condition of the lock.

3. A lock according to claim 2; wherein said second blocking means includes a shoe interposed in the path of movement of said bolt in the lock opening direction and adapted to be displaced by said bolt as the latter is moved to the fully open condition of the lock, a blocking arm movable between an inoperative position above the path of travel of said bolt and a blocking position in the path of travel of said bolt in the lock opening direction, said shoe holding said blocking arm in its inoperative position when the lock bolt is in its fully closed condition, displacement of said shoe by the bolt during movement of the latter to the fully open condition being effective to release said blocking arm which then rides on said bolt so that, upon subsequent displacement of said bolt in the lock-closing direction said blocking arm rides olf said bolt to its blocking position thereby to prevent displacement of the bolt in the lock-opening direction, said blocking arm being located to ride off said bolt as the latter reaches the position where said swin'gable arm contacts said blocking member of the first blocking means.

4. A lock according to claim 3; wherein said shoe has an inclined end face engageable with said blocking arm to return the latter to its inoperative position upon movement of said shoe in the lock-closing direction of said bolt, and a handle on said shoe for manually displacing the latter in said lock-closing direction of the bolt.

5. A look according to claim 1; wherein said lock includes a slidable bolt operated by turning of the key in the lock; and wherein said second blocking means includes a shoe displaced by said bolt during movement of the latter in the lock opening direction, and a blocking arm resting on said shoe and movable to a position in the path of travel of said bolt so that, when said shoe is displaced by movement of the bolt in the lock-opening direction, said blocking arm rides off said shoe onto said bolt and subsequent movement of said bolt in the lockclosing direction causes said blocking arm to ride-oil said bolt as the latter approaches the position at which said first blocking means is operative thereby to prevent movement of saidbolt in the lock-opening direction from the last mentioned position.

6. A lock according to claim 5; wherein said shoe has an inclined end surface to engage said blocking arm and move the latter out of the path of travel of the bolt when said shoe is moved in the lock-closing direction of said bolt, and a handle on said shoe for manually displacing the latter in said lock-closing direction of the bolt.

References Cited in the file of this patent UNITED STATES PATENTS 1,076,587 Lapidus Oct. 21, 1913 1,237,138 Wyckotr Aug. 14, 1917 1,239,240 Williams Sept. 4, 1917

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