US1918719A - Doorlock - Google Patents

Description

July 18, 1933.

w. R. SCHLAGE 1,918,719

DOORLOCK Filed May 26, 1930 2 Sheets-Sheet l F I .1- I

3 Z, p/O a 5' l4 4/& 8 24 7 V .94 37 2 A TTORNEYS.

July 18, 1933. w. R. SCHLAGE DOORLOCK Filed May 26, 1930 2 Sheets-Sheet 2 Patented July 18, 1933 UNITED STATES PATENT OFFICE WALTER R. SCHLAGE, OF SAN FRANCISCO, CALIFORNIA, ASSIGNOR TO SCHLAGE IDCK 00., OF SAN FRANCISCO, CALIFORNIA, A CORPORATION OF CALIFORNIA DOORLOCK Application filed May 26,

This invention relates to door locks and especially to improvements on the structure shown in Patent Number 1,579,457, entitled Door lock issued April 6th, 1926.

The above patent discloses a door lock comprising a main lock housing; a bolt or latch therein; a retractor connected with the latch; an inner and an outer spindle whereby reciprocal movement is imparted to the retractor and the latch; a pair of door knobs secured one on each spindle; and a button actuated locking mechanism in the inner knob and spindle whereby the outer knob and spindle may be locked against rotation, said button actuated locking mechanism be ing automatically released when the inner knob and spindle is turned.

The general locking mechanism disclosed in the present application is substantially identical in structure and operation to that described in connection with the above patent but additional features have been added. First, a key actuated mechanism has been placed in the outer knob whereby the latch may be retracted; secondly, a key blocking or shut-out mechanism has been provided to prevent operation of the key actuated mechanism in the outer knob except with an emergency key; third, a button actuated locking mechanism has been placed'in the inner knob which is adapted to be manually depressed and when so depressed actuates the key blocking mechanism; fourth, a button actuated locking mechanism has been provided which is adapted to be automatically released either by rotation of the inner knob or by depression of the latch; and fifth, a key actuated mechanism has been provided whereby the button may be locked in itsde pressed or looking position so as to prevent release thereof either by rotation of the inner knob or by depression of the latch.

The door lock is shown by way of illustration in the accompanying drawings, in which Fig. 1 is a horizontal section of the door lock showing it in position in a. door, said section showing the button actuated locking bar in its released position,

Fig. 2 is a similar section showing the 1930. Serial No. 455,899.

button actuated locking bar in its locked position,

Fig. 3 is a cross section taken on line III-III of Fig. 2,

Fig. 4 is a longitudinal central section of the outer knob and the pin tumbler lock carried thereby, said view showing the locking member in blocking position to prevent complete insertion of a key,

Fig. 5 is a cross section taken on line VV of Fig. 1,

6 is a perspective view of the outer spin 1e,

Fig. 7 is a perspective view of the key actuated spindle,

Fig. 8 1s a perspective view of the key blocking plunger,

Fig. 9 is a perspective view of the pin tumbler cylinder housing,

Fig. 10 is a perspective view of the rod actuated by the pin tumbler cylinder,

Fig. 11 is a perspective view of the auxiliary push button,

Fig. 12 is a perspective View of the sleeve in which the auxiliary push button is reciprocally mounted,

Fig. 13 is a perspective view of the sleeve in which the main push button and sleeve 50 are guided and reciprocally mounted,

Fig. 14 is a perspective view of the looking bar,

Fig. 15 is a perspective view of the shutout key,

Fig. 16 is a perspective view partially broken away showing the main push button,

Fig. 17 shows one type of emergency key,

Fig. 18 shows an ordinary or guest key,

Fig. 19 shows a modified form of guest key, and

Fig. 20 shows a modified form of emergency key.

Referring to the drawings in detail and particularly Figs. 1, 2 and 3, A and B indicate a pair of plates which are interspaced to form a guideway for a retractor which is generally indicated at C. The plates A and B are tied together by cross arms indicated at 1 and 1a, and they are surrounded by a cup-shaped housing generally indicated at 2. The plates A and B and the housing 2 form the main lock housing. The plate B is provided with a hub member 3 in which is journaled a spindle 4, said spindle being substantially identical to that shown in Fig. 6 and serving the function of supporting an inner knob 5 and a push button actuated locking mechanism hereinafter to be described. The plate A is also provided with a .hub member generally indicated at 6 and this hub supports a spindle 7 which carries an outer knob generally indicated at 8 and a key actuated latch retracting mechanism enerally indicated at 20 hereinafter to be described, spindle 7 being also substantially identical to that shown in Fig. 6.

The inner knob and spindle 4 are free to rotate at all times while the outer spindle 7 and knob 8 are locked against rotation at all times as will hereinafter be described.

The lock as a whole is secured in a door generally indicated at D by means of a pair of escutcheon plates such as shown at 9 and 10. The manner ofsecuring these escutcheon plates is of no importance in the resent lnstanee as several different met ods ma be employed. The main lock housing inc uding the plates A and B, the housing 2, and the hub members 3 and 6 are secured in the door by means of the escutcheon plates and they form what will hereinafter be referred to as a latch actuating unit.

The latch unit is best shown in Fig. 3. It consists of a cylindrical shaped housing generally indicated at E which is secured to a face plate 12. The latch proper is indicated at 13 and is reciprocally mounted in the housing. It is provided with an inwardly extending latch bar 14 and the inner end of this bar is notched as shown at 15 to permit it to be engaged or grasped by a pair of fingers 16 formlng a part of the retractor indicated at C. A spring 17 is interposed between the rear end of the latch housing and the latch proper and this spring normally maintains the latch and the latch bar the projected position shown in Figs. 2 an 3.

The inner end of the spindle is provided with a roll-back member generally indicated at 18. This roll-back member is clearly shown in Figs. 1, 3, and 6, and it will be noted that it engages a cross plate 19 forming a part of the retractor, hence if the inner knob 5 is rotated the roll-back 18 will engage the cross plate and transmit move ment to it, or in other words, the retractor in the direction of arrow or, see Fig. 3, and as the fingers 16 engage the latch bar at the point indicated at 15 the latch will accordingly be retracted.

A spring 19w is interposed between the lock housing 2 and the cross plate 19 of the retractor. This spring is compressed when the latch is retracted and it accordingly serves the function of aiding spring 17 in returning the retractor and the latch to normal or projected position.

The structure shown in this application embodies several novel features.

First, a key actuated cylinder lock whereby the retractor may be actuated;

Secondly, a button actuated mechanism carried b the inner knob and spindle for locking t e door from the inside;

Third, means for blocking the keyway when the door is locked from the inside so that the door cannot be opened from the outside by any key except an emergency ourth, means are provided for releasing the keyway blocking member when the inner knob is rotated and when the latch is depressed; and

Fifth, a key actuated mechanism is provided for locking the button in its depressed position so as to prevent release thereof either when the inner knob is rotated or the latch depressed.

A standard form of pin tumbler lock may be employed such as shown in Figs. 1, 4, and 9. It is pressed within the outer spindle and the outer knob is provided with a central opening through which a key may be inserted to actuate the lock.

The lock consists of an ordinary cylinder such as indicated at 20. Within this cylinder is mounted a plug 21 and co-operating therewith are tumbler pins 22. Secured to the inner end of the plug is a plate 23, see Figs. 4 and 10, and formed thereon is an extension 24 in the form of a rod, said rod being square in cross section.

When a key is inserted as shown in Fig. 4, the pin tumblers are depressed and plug 21 is rotated and as plate 23 is secured to the plug it will rotate with the plug and so will rod 24. Rod 24 projects into a. plunger generally indicated at 25, this plunger being mounted within a secondary spindle such as indicated at 26.

The secondary spindle is best shown in Figs. 1 and 7. By referring to these figures it will be noted that it is longitudinally slotted as indicated at 27 and that it is provided with a roll-back member 28 on its outer end. This roll-back member also engages the crossplate 19 of the retractor C and the cross plate or retractor may accordingly be actuated either by the secondary spindle shown at 26 or by the inner spindle indicated at 4.

The plunger 25 is provided with a key or lug 29 which projects into the slot 27 of the secondary spindle. An inner lock is thus formed between the plunger 25 and the secondary spindle and as the rod 24 projects into the secondary spindle rotary motion will be transmitted to rotate not only the plunger 25 but also the secondary spindle 26. It is accordingly possible to actuate the retractor by means of a key.

The plunger 25 performs the following main functions: I

First, that of transmitting rotary motion from the key actuated pin tumbler cylinder to the secondary spindle 26 so that the latch 13 may be retracted by operation of a key. Secondly, plunger 25 carries .a keyway blocking member indicated at 30 for blocking the keyway when the door is locked from the inside so that the door cannot be opened by any key except an emergency key. The keyway blocking member is a flat bar such as indicated at 30 and it is moved into the keyway when it is desired to prevent open- .except an emergency key.

The mechanism whereby the lock is looked from the inner side of the door embodies a push button such as shown at 32.. This button is secured to "a bar 33, the inner end of which rests in a socket 34 formed in the inner 'end of the plunger 25. This connection between the bar 33 and plunger 25 permitting the plunger to freely rotate with relation to the bar when it is actuated by a key inserted from the exterior. The bar 33 is also provided with an extension such as shown at 35. This extension enters a slot 36 formed in the plate A and it also enters a longitudinally extending slot 741, formed in the outer spindle 7. The extension member 35 will at all times extend into the two slots indicated at 36 and 7a and as such locks the outer spindle and knob against rotation at all times.

By referring to Fig. 1, it will be .noted that the push button 32 is guided in a sleeve 37 which is secured in the outer end of the spindle 4 but being pressed thereinto or otherwise secured. This sleeve is shown in Fig. 13. It functions as a guide for the button 32. It functions as a spring cage and it furthermore carries an L-shaped slot such as shown at 38 and 39, respectively. The inner end of the sleeve 37 is provided with an inturned annular shoulder 40 and a spring 41a is interposed between this shoulder and the inner end of the button 32, this spring normally functions to maintain the button 32 in the extended position shown in Fig. 1. In this position of the button the door is unlocked and may be freely opened by an ordinary key from the outside or by rotation of the knob from the inside. On the other hand if the button 32 is depressed as shown in Fig. 2, it will be held in depressed position by means of a latch projection 40a which engages one of the side the retractor. When the button 1s depressed as shown in Fig. 4 plunger 25 is moved outwardly against the tension of spring 24a and as it carries the keyway blocking member 30, this member will be moved into blocking position that is it will enter the keyway of the pin tumbler cylinder as shown in Fig. 4 and thereby prevent insertion of an ordinary key, hence it button 32 is depressed the door is locked, as opening of the door from the exterior by an ordinary key is prevented due to the fact that the keyway is blocked.

If it be desired to open the door from the exterior under this condition it can only be accomplished by using an emergency key such as shown in Figs. 17 and 20. The outer end of the key shown in Fig. 20 is cut away as indicated at 42, hence circumventing the blocking member 30 and permitting full insertion of the key to open the door. A guests key or maids key such as shown in Figs. 18 and 19 will, however, prove useless as they cannot be fully inserted, hence the door is positively locked against being opened from the exterior except by an emergency key.

The keys shown in Figs. 17 to 20, inclusive, all operate on the same principle. The keys shown in Figs. 18 and 19 may be termed guests keys, maids keys, pass keys, etc. The key shown in Fig. 18 is so long that if the keyway is blocked by the blocking member it cannot be fully inserted.

The key shown in Fig. 17 may, however, be

inserted as it is so short as not to be interfered with by the blocking member. Fig. 19 shows another form of guest or maids key which can be used as long as the blocking member is not inserted in the keyway but when the blocking member is inserted the keyway is obstructed and the key shown in Fig. 19 may not be inserted. The key shown in Fig. 17 may, however, be inserted as its outer edge is cut away.

If the door has been locked from the inside by depression of the button and if the occupant of the room wishes to open the door he or she merely grasps the knob 5 and rotates it. By doing so rotary motion is transmitted to the spindle 4 and as this is provided with a roll-back member 18, the roll-back member will engage the cross plate 19 on the retractor and depress the same. During such depression latch 13 is retracted and the latch. projection 40a on the locking bar 33 is disengaged as the side plate41 of the retracto'r moves away from the plates. The moment the latch 40a, is disengaged spring 410 returns the push button to normal extended position and as the locking bar 33 is attached thereto it will be returned to the normal position shown in Fig. 1. Spring 24a interposed between the plates 41 of plunger 25 and the lock 20 will at the same time force the plunger inwardly in unison with the bar 32 and the keyway blocking member 30 will accordingly be retracted. In this position of the locking bar 32 and plunger 25 the door is free to be opened by merely rotating the inner knob 5.

If theoccupant of the room should accidentally depress the button after the door is opened it will be automatically released when the door is closed. This is due to the fact that when the door is closed latch 13 will be depressed. The notch 15 on the 1nner end of the latch bar will then engage the fingers 16 of the retractor and cause depression or inward movement thereof and when the retractor is depressed latch 40a on the bar 33 will be released and the button and the bar 33 will accordingly return to normal or unlocked position, hence the door may be unlocked by rotation of the inner knob, or it may be unlocked by depression of the inner latch, or it may be unlocked from the outside by means of an emergency key.

The normal operations of the lock have now been described but it is capable of one more function, to-wit, that of being key actuated from the inner side of the door. The purpose thereof is as follows:

If a lock of this character is installed in an apartment house, hotel, or like building, it sometimes happens that the occupants of a room, or apartment, fail to pay their rent, or get into bad repute. In such instances the manager of the hotel, or apartment, may want to exclude the occupant from the room. This is accomplished as follows:

Push button 32 shown in Figs. 1, 2 and 16, is pressed, or otherwise, secured to the outer end of a sleeve such as shown at 50, see Figs. 1, 2, and 12. The inner end of this sleeve is notched as shown at 51 and is provided with two legs 52 and with a perforated end section 53. The inner end of the locking bar 33 passes through the perforated end 53 of the sleeve and it is there secured by riveting or otherwise. A swivel connection is, however, made between the bar and the bottom plate 53 so'that the knob 5 and spindle 4 may be freely rotated with relation to the bar. Sleeve 50 carries button 32 and the two are guided within the sleeve 37 which as previously stated is pressed, or otherwise, secured within the outer end of the spindle 4. Mounted interiorly of the sleeve 50 is an auxiliary push button 54, see Figs. 1, 2 and 11. This button is provided with a lug 55 at its inner end and the lug extends through the notch 51 formed in sleeve 50 and it projects into the L-shaped slot indicated by the numerals 38 and 31, which is formed in sleeve 37, see Figs. 1, 2, and 13. A spring 56 is interposed between the end plate'53 of sleeve 50 and the outer end of holding the auxiliar button in engagement with the main push utton as shown in Fig.

1. The main push button is provided with a pair of perforations at its outer end as shown at 57 and a key such as shown in Fig. 15 is adapted to be inserted through the perforations 57. When this key is inserted the auxiliary button 54 is depressed or moved inwardly as shown in Fig. 2, and by pushing inwardly on the key, the main. button 32 is also pushed inwardly and the two buttons will then assume the position shown in Fig. 2. During such movement lug 55 on the inner push button moves from one end of the slot 38 to the other and if the key is then rotated a quarter of a revolution lug 55 enters the horizontal part of the slot shown at 39 and engages the notch 39a at the end thereof. In this manner both push buttons are locked in their depressed position, thus preventing release of the locking bar and removal of the key blocking member when the latch is depressed, and also when the inner knob is rotated. This makes it possible for the landlord to enter a room from which he wants to exclude a guest and when he so enters he can insert the key shown in Fig. 15 and lock the push button in the depressed position. By doing so he fixes the key blocking member into the end of the keyway of the pin tumbler lock and he locks the button so that it'will not be released when he goes out and shuts the door. VVhenthe guest comes back to the room and inserts his key, which may be of the type shown in Fig.1? or 19, he will find that the keyway is blocked and that the door cannot be opened. He will, accordingly, have to see the manager as no one should be in possession of an emergency key but that particular individual. The manager may then straighten out matters with his guest, for instance demand rental or whatever the case may be, and after matters are straightened out he can accompany the guest to his room and open the door with his emergency key and then release the buttons by means of the key shown in Fig. 15, which is also in the possession of the manager. When the buttons are released with this key the operation of the lock will be normal.

The lock shown in the present instance is particularly intended for hotel uses, and the like, and possess a number of advantages:

First, if the occupant of the room does not want to be disturbed by the maid or any other employee of the hotel in possession of a key, he merely depresses the button 32 thereby projecting the blocking member into the keyway so that the maids key cannot be inserted;

Secondly, by projecting the blocking member into the keyway unauthorized persons are prevented from entering even though in possession of a key as the only possible method of entering the room when the blocking member is in position is to come into possession of an emergency key such as shown in Figs. 17 and 20;

Third, under normal conditions it is impossible for the occupant of the room to lock himself out as closing of the door will cause depression of the latch and this in tum automatically releases the locking mechanism if the button has been depressed before the occupant leaves the room;

Fourth, the occupant of the room is relieved of the necessity of locking the door when going out as the door automatically locks itself when it is shut. that is, the exterior knob is at all times locked against rotation hence when the guest closes the door on leaving the room the door is locked but he can always enter by inserting his key and thereby opening the door;

Fifth, the manager or other authorized person in charge of the hotel is at all times in possession of an emergency key and also of a lock-out key, such as shown in Fig. 15. With the emergency key he can always enter any room whether the occupant of the room is present or not. Furthermore he can always enter any room and shut out the occupant by locking the buttons in depressed position by means of the lock-out key.

\Vhile certain features of th present invention are more or less specifically described. I wish it understood that various changes may be resorted to within the scope of the appended claims. Similarly, that the materials and finishes of the several parts employed may be such as the manufacturer may ecide, or varying conditions or uses may demand.

Having thus described my invention, what I claim and desire to secure by Letters Patent 1. In a lock of the character described. a key actuated mechanism on one side of the lock for opening the lock, said key actuated mechanism adapted to be actuated by a plurality of keys including an emergency key, and a key actuated mechanism on the other side of the lock for rendering the first named key actuated mechanism inoperative against all keys except an emergency key.

2. In a lock of the character described, a key actuated mechanism on one side of the lock for opening the lock, a key actuated mechanism on the other side of the lock, and means actuated by said last named key actuated mechanism, for placing a blocking member in the path of the key inserted in the first named key actuating mechanism to prevent insertion of a key therein.

3. In a lock of the character described, a key actuated mechanism on one side of the lock for opening the lock, said key actuated mechanism adapted to be actuated by a plu rality of keys including an emergency key, a key actuated mechanism on the otherside of the lock, and means actuated by said key actuated mechanism for placing an obstruction in the path of any key inserted in the first named key actuated mechanism to render all keys except an emergency key inoperative.

4. In a lock of the character described, a key actuated mechanism on one side of the lock for opening the lock, a depressible button on the other side of the lock, means actuated by depression of said button for rendering the key actuated mechanism inoperative, and a second key actuated mechanism for locking the button in depressed position.

5. In a lock of the character described, a latch, a knob actuated spindle on one side of the lock for retracting the latch, a key actuated mechanism on the other side of the lock for retracting the latch, said key-actuated mechanism being operable by a plurality of keys, including an emergency key, a. depressible push button in the knob, means actuated by depression of said button for rendering the key actuated mechanism inoperative except against an emergency key, and key actuated means for locking the push button in its depressed position.

6. In a lock of the character described, a latch, a knob actuated spindle on one side of the lock for retracting the latch, a key actuated mechanism on the other side of thelock for retracting the latch, said key-actuated mechanism being operable by a plurality of keys, including an emergency key, a depressible push button in the knob, means actuated by depression of said button for rendering the key actuated mechanism inoperative except against an emergency key, an auxiliary push button mounted within the first named button, and a key insertable in the first named push button and adapted to depress both buttons, said key also adapted to rotate the buttons and to turn them into a locking position.

7 In a lock of the character described, an inner spindle and knob, a pair of push buttons mounted in the knob, one button being mounted interior of the other, a key insertable in the outer button and engageable with the inner button to depress it, said key also adapted to depress the outer button and said key adapted to rotate both buttons, and means carried by the inner button for securing both buttons in depressed position when rotated by means of the key.

8. In a lock of the character described, an inner spindle and knob, a pair of push buttons mounted in the knob, one button being mounted interior of the other, a key insertable in the outer button and engageable with the inner button to depress it, said key also adapted to depress the outer button and said key adapted to rotate both buttons, means carried by the inner button for securing both buttons in depressed position when rotated by means of the key, a latch adapted to be retracted by the spindle, a second key actuated mechanism for retracting the latch, and means actuated by depression and rotation of the buttons by means of the first named key rendering the second named key mechanism inoperatlve. g

9. In a lock of the character described, an outer fixed spindle and knob, an inner rotary spindle and knob, an auxiliary spindle, key actuated means within the fixed knob for rotating the auxiliary spindle, a plunger reciprocally mounted in the auxiliary spindle, a key blocking member carried by said plunger, a depressible push button in the inner knob, a bar connected with said but-. ton and adapted during depressionof the button to move the plunger and blocking member into blocking position with relation to the key mechanism in the fixed knob, and key actuated means for locking the push button in depressed position.

10. In a door lock having a latch bolt, manually actuated means for retracting the latch bolt, key controlled means for actuating the latch bolt, means for rendering the key means inoperative, means actuated by depression of the latch bolt for restoring the key means for operation, and other means preventing restoring of the key means for operation upon depression of the latch bolt.

11. In a door lock having a latch bolt, manually actuated means for retracting the latch bolt, key controlled means for actuating the latch bolt, means for rendering the key means inoperative, means actuated by operation of the manual means for restoring the key means for operation, and.

other means preventing restoring of the key means for operation upon operation of the manual means.

12. In a door lock having a latch bolt, manually actuated means for retracting the latch bolt, key controlled means for actuating the latch bolt, means for rendering the key means inoperative, means actuated by depression of the latch bolt or by operation of the manual means for restoring the key means for operation, and other means preventing restoring of the key means upon depression of the latch bolt or upon operation of the manual means.

13. In a door lock having a. latch bolt, key operated means for actuating the latch bolt, means for rendering the ey means bolt, means for preventing full'insertion of i a key in said key 0 erated means, said means being released y depression of the latch bolt, and other means for preventing release of said means by depression of the latch bolt.

15. In a door lock having a latch bolt, a

keyoperated mechanism for actuating the latch bolt, a key stop for preventing full insertion of a key, manual means for movin said key stop. into blocking position, said key stop being released by depression of the latch bolt, and other means for preventing release of the key stop upon depression of the latch bolt.

16. In a lock of the character described a key actuated mechanism on one side of a door for opening the lock, a depressible button on the other side of the door, means actuated by depression of said button for placing an obstruction in the path of a key inserted in the key actuated mechanism, manually operated means for removing the obstruction, and other means preventing removal of the obstruction upon operation of the manual means.

17 In a lock of the character described, a key actuated mechanism on one side of a door for opening the lock, a depressible button on the other side of the door, means actuated by depression of said button for placing an obstruction in the path of a key inserted in the key actuated mechanism, means actuated by depression of the latch bolt for restoring the key means for operation, and other means preventing restoring of the key means for operation upon depression of the latch bolt.

18. In a lock of the character described a key actuated mechanism on one side of a door for opening the lock, a depressible button on the other side of the door, means actuated by depression of said button for placing an obstruction in the ath of a key inserted in the key actuated mechanism, means actuated by depression of the latch bolt for restoring the key means for operation, and means carried by the push button for preventing restoring of the key means for operation upon depression of the latch bolt.

WALTER R. SCHLAGE.

Images