US738824A

US738824A - Electric lock.

Info

Publication number: US738824A
Authority: US
Inventors: William Macmillan
Original assignee: EGBERT WINKLER
Current assignee: EGBERT WINKLER
Priority date: 1902-07-29
Filing date: 1902-07-29
Publication date: 1903-09-15
Anticipated expiration: 1920-09-15

Description

v No. 738,824.

PATENTED SEPT. 15, 1903. w. MAUMILLAN. ELECTRIC LOCK.

APPLICATION I ILED JULY 29,1902.

3' SHEETS-SHEET 1;

H0 MODEL.

INVENTOR ATTORN Y8 v /////1/////dfd (1.,WASHINGYON u c PATENTED SEPT. 15

W. MAbMILLAN.

ELECTRIC LOCK. APPLIOATION FILED JULY 29, 1902.

3 SHEETS-SHEET 2.

N0 MODEL.

WITNESSES:

A INVENTOR m v /?m ATTOR EY 7 ELECTRIC LOOK.

APPLICATION FILED JULY 29, 1902 H0 MODEL. 3 8HEETSSHEET a.

WIIIIIII/IIII,

WITNESSES INVENTOR JQZ Q M BY ATTORN Y8 NITED STATES Patented September 15, 1903.

WILLIAM MACMILLAN, OF NEW YORK, N. Y. ASSIGNOR OF ONE-HALF TO EGBERT WINKLER, OF YORK, N. Y.

ELECTRIC LOCK.

SPECIFICATION forming part of Letters Patent No. 738,824, dated September 15, 1903. Application filed July 29, 1902. Serial No. 117,458. (No model.)

To all whom it may concern..-

Be it known that I, WILLIAM MACMILLAN, a subject of the King of Great Britain, and a resident of the city, county, and State of New York, have invented certain new and useful Improvements in Electric Locks, of which the following is a specification.

Myinvention relates to locks which are controlled at a distance;and its object is to pro vide an electromagnet for controlling a retaining means of the lock-bolt, and thereby prevent the opening of the lock until after the electromagnet has been operated.

The invention consists in features of construction and combination of parts hereinafter described and claimed.

The invention is illustrated in the accompanying drawings, in which Figure 1 illustrates the look as placed in the jamb of a door. Fig. 2 illustrates a horizontal sectional view of the lock taken on the line 2 2 of Fig. 1. Fig. 3 illustrates another sectional view of the lock taken on the line 3 3 of Fig. 1. Fig. 4 illustrates a sectional view of the look similar to the View illustrated in Fig. 3. As shown in Fig. 4, the lock is represented as being opened. Fig. 5 illustrates a rear view of the upper part of the lock, showing the cam-surface located on the gib. Fig. 6 illustrates a vertical sectional View of the lock taken on line 6 6 of Fig. 1. Fig. 7 illustrates the outside plate of the lock, showing the supporting parts of the gib. Fig. 8 is a diagram illustrating the circuit connections of the electric lock.

Referring to Fig. 1, 1 indicates the supporting-framework of the lock located in the doorjamb 2. 3 indicates the door, and 4indicates the bolt of the door-lock. The bolt 4 may be operated by either a knob or by a key, as in the ordinary lock. There may also be provided a retaining means in the form of a gib for maintaining the bolt 4 in a locked position. This retaining means or gib is electromagnectically controlled and will be swung out of its retaining position by the pressure.

of the bolt 4 upon the gib as the door is opened. The locking position of the gib is maintained by a controlling means, which prevents the movement of the gib and consequently holds the door locked unless the controlling means is permitted to move by the action of an electromagnet. In order that this function may be performed, the following mechanism is provided.

In Figs. 2, 3, 4, 5, 6, and 7, 5 indicates the gib or the retaining means for the bolt 4. The gib is pivoted upon the rod 6 and is pressed into a locking position by the operation of the spring 7. The normal limit of the motion of the gib is adjusted by means of a screw 9, supported in the ears or lugs 10 located on the gib. The gib has a hook or catch 11, which takes hold of the bolt 4. When the bolt is forced against the catch 11, the gib 5 will be swung backward clear of the bolt 4 unless the gib is maintained in its position by a retaining means in its locking position. In order to maintain the gib 5 in a locking position, I have provided a dog 12, which is pivoted on bearing-points 13, located on the ends of the adjusting-screws 1415. In order to adjust the position of the gib 12, the

screws

14 and 15 are moved in and out of the frame of the lock. At the opposite end of the dog 12 there is provided a ball-bearing 16, which is guided by a short strip 17, located on the top of the dog. This strip 17 has a hole 18, which is adapted to receive the ball 16. The ball 16 is kept in the hole 18 by the pressure of the dog 12 against the gib 5. downward against the gib 5 by the operation of the compression-spring 21, which is maintained in its position by the stud 20 and by the recess 19, located in the dog 12. The dog 12 is moved to and fro by the operation of a cam-surface 22, which is located on the gib 5. The cam-surface 22 is somewhat angular in its contour, although for ease of operation of the gib all the parts of the surface are curved. As the gib 5 is swung backward by the operation of the bolt 4 the cam-surface 22 operates upon the ball-bearing 18 to raise the dog 12. If, however, the dog 12 is prevented by a retaining means from this upward motion produced by the gib the gib will be held in a locking position, since the ball 16 is held below the shoulder 23 of the cam-surface 22, and if retained in this position the lock cannot be opened. For retaining the dog in a position to lock the gib there is provided an arm 30, (shown in Figs. 3 and 6,) located on The dog 12 is pressed the dog and moved therewith. An armature or a catch 31, which is electromagnetically controlled, is normally in the path of the end of the arm 30. The armature 31 or other electromagnetically-controlled means is supported on the pivot 32, supported by the frame 1, and is held in its normal position by the operation of the spring 33. For operating the armature 31 there is provided a'magnet 34, supported by means of a yoke 35 upon the frame 1 of the look. This magnet 34 is connected to a push-button 35 and to a battery 36. When the push-button 35 is pressed, a circuit of the battery through the electromagnet is closed and the electromagnet 34 is energized. The energization of the magnet 34 draws down the armature 31, so as to remove it from the path of the arm located on the dog 12. When the catch or armature 31 is thus removed, the dog 12 may be operated by the gib, which is moved by the operation of the bolt 4 as the door is opened. When the door is opened, the bolt 4 presses against the hook or catch 11 of the gib 5 and forces the gib backward. This in turn moves the dog 12, the arm30 passing clear of the armature 31. In order that the door may be opened after a single operation of the pushbutton and the push-button allowed to return to its normal position, a catch is provided for holding the armature in the position to which it is drawn by the magnet. This permits of the opening of the door upon a single pressure of the push-button 35 and also permits the removal of the hand as soon as the electromagnet 34 is energized. The armature 31 is retained in its unlocking position by the catch until the door is opened. The catch 40 is pivoted on the pin 41, Fig. 6, which is supported on a bracket 42, located on the frame 1. The upper end of the catch 40 extends through and moves in a slot 43, located in the armature 31. This end is located directly under the arm 30, located on the dog 12, so that when the arm passes clear of the armatures it will move the catch, so as to allow the armature to spring back to its normal position upon the return of the dog.

' The catch 40 is normally pressed forward by the operation of the spring 44, which presses against the catch 40 at one end and is supported on the bracket 42 at the other. When the door is opened and the dog 12, with its arm 30, is moved, the arm 30 passes clear of the armature 31 until it presses down the catch up against the arm 30. When the bolt 4 has more swings into the path of the arm 30 and again prevents the movement of the dog 12 until the armature is again drawn out of its normal position by the operation of the magnet 34. In order to prevent any loss of current due to holding the push-button down for an unnecessary length of time and greatly save the battery, the electric circuit is broken upon the operation of the magnet. In order to thus break the circuit through the battery, apiece of insulating material45 islocated on the upper end of the catch 40, where it comes in contact with the armature 31, when the armature is drawn down by the electromagnet 34, and the catch is so positioned as to hold the armature at the point in which the insulation 45 is located. The circuit connection to the battery is normally completed through the upper end of catch 40 and the armature 31, with which it is normallyin contact. The armature 31 is connected to the electromagnet 34, and the magnet 34 is connected to the push-button 35, which is in turn connected to the battery. When the magnet 34 draws the armature 31 down, the insulatingpiece 45 breaks the circuit between the catch 40 and the armature 31 and the magnet 34 is deenergized, although the push-button 35 may be held down or may be pressed any number of times. The circuit is reestablished by the movement of the gib, which presses the catch down and allows the armature to spring to its normal position.

The above description of myinvention and the illustrations shown in the drawings is merely a preferable form of the invention. It may, however, be modified and varied in many ways by those skilled in the art without in any way departing from the spirit thereof. The lock may be used in connection with time-locks. would then be closed by the operation of a a timepiece in a manner well known in the art. When the circuit is closed by a timepiece, a push-button, or bya switch connected to a mechanism of any kind, the magnet is energized, and the safe door or lid of any kind may be opened. The invention may be also used for unlocking the main-entrance doors in flats or in factories wherein a lock is to be controlled from some distant point.

What I claim, and desire to secure by Letters Patent, is as follows:

1. In an electric lock, the combination of a gib, a dog moved by the said gib and for maintaining the said gib in a locking position, an armature adapted to prevent the motion of the said dog, an electromagnet for operating on the said armature, a catch adapted to retain the armature in such a position so as to allow the movement of the said dog, and a means for tripping the said catch when the gib operates the said dog as the door is opened.

2. In an electric lock, the combination of a gib having an angular groove,a spring-pressed dog having a ballbearing movable on the said groove and adapted to retain the said gib in a locking position when the said bearing is The circuit in such a case' on one of the partsof the said angular surface, an arm carried by the said dog, an armature normally located relative to the said arm so as to prevent the movement of the said dog, an electromagnet for moving the said armature to allow the said dog to be actuated.

3. In an electric lock for doors, &c., the combination of a gib, operated by the opening of the door or other similar device, a dog operated by the said gib and for maintaining the said gib in a locking position, an armature for preventing the operation of the said dog, an electromagnet for operating the said armature, a catch for retaining the said armature in a disconnected position until the said gib operates on the said dog as the door or other similar device is opened.

4. In a lock for doors, 850., the combination of a gib operated by the opening of the door or other device, a dog actuated by the said gib and for maintaining the said gib in a locking position, means for preventing the actuation of the said dog and means for retaining the said preventing means in a disconnected position until after the said gib has operated on the said dog as the door or other device is opened.

5. In an electric lock for doors, the combination of a bolt, a gib for retaining the said bolt and Which is operated by the said bolt, a dog operated by the said gib and for retaining the said gib in a locking position, an armature for preventing the operation of the said dog and maintaining it in a locking position, an electromagnet for actuating the said armature to permit the operation of the said dog, a catch for retaining the said armature in a disconnected position, and a means for unlocking the said catch.

6. In an electric lock, the combination of a bolt, a-gib operated by the bolt as the lock is opened, a dog for locking said gib, an armature for retaining said dog in a locking position, a magnet for operating upon the said armature, an electric circuit and a source of an electric current for energizing the said magnet, a catch for retaining said armature in an unlocking position and for breaking electric circuit until the said gib operates on the said dog as the door is opened.

7. In an electric lock, the combination of a gib having a slot, a spring-pressed dog having the ball-bearings movable in the said slot, an armature for preventing operation of the said dog, an electromagnet for operating upon the said armature, an electric circuit andasource of electric current for energizing the said magnet, a catch having an insulating-piece for retaining said armature in an unlocking position and for breaking the electric circuit through the said electromagnet until the said dog is'operated by the said gib.

WILLIAM MACMILLAN.

Witnesses:

JOHN O. GEMPLER, SIDNEY MANN.