US1124666A - Electric lock. - Google Patents

Description

W. A. SGHUTZMANN.

ELECTRIC LOOK.

APPLIGATION FILED 001%. 2B, 1913.

1,124,666. Patented Jan. 12, 1915.

A will THE NORRIS PETERS C(Z, PHOTO-LITE)W WASHINGTOK, m g

WILLIE A. SCHUTZMANN, OF NEW IBERIA, LOUISIANA.

ELECTRIC LOCK. 7

Specification of Letters Patent Patented 12111.12, 1915.

Application filed October 28, 1913. Serial No. 797,834.

To aZZ whom it may concern:

,Be it known that I, WILLIE A. SonnrzuANN, a citizen ofthe United States, res ding at New Iberia, in the parish of Iberia, State of Louisiana, have invented certain new and useful Improvements in Electric Locks; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to improvements in looks, and particularly to electric locks.

The principal object of the invention is to provide a lock for the toilet door of a railway car which can be operated by knobs from within or without while the train is in motion but which can be rendered inoperative except from within when the train is not moving.

Another object is to provide a lock of this character which can only be unlocked from without by means of a key when the train is not in motion. v

Other objects and advantages will be apparent from the Following description, when taken in connection with the accompanying drawings.

In the drawings: Figure 1 is a diagrammatic view showing the lock and its electrical connections. Fig. 2 is an enlarged elevation of the lock, the cover being removed. Fig. 3 is an end elevation of the lock. Fig. 4 is a vertical section on the line 14 of Fig. 2. Fig. 5 is a horizontal sectional view on the line 55 of Fig. 2. Fl 6 is a horizontal section on the line 66 of Fig. 2.

Referring particularly to the accompanying drawings, 10 represents a suitable metal casing which contains the mechanism of the lock. Disposed longitudinally in the lower portion of the casing is a latch bolt 11, the beveled nose 12 of which projects through the opening 13 in the end wall of the casing. The other end of the bolt is bifurcated as indicated at 14 and straddles a knob spindle hub 15 disposed transversely in the casing. The ends of the portions of the bifurcations have. outturned lugs 16 which are arranged to be engaged by the radially extending fingers 17 carried by the hub 15. In the other end of the casing above the bolt is a second knob spindle hub 18, and extending vertically from this hub is an arm 19 in line to be engaged by the ward of the key 20 which is inserted through the key hole slot 21 in the side wall of the casing. Projecting from the lower portion of the hub 18 is an arm 22, and'formed on the rear side of this arm is a rearwardly extending finger 23. In one side of the bolt 11 is formed a recess 21- in which is disposed the beforementioned arm and finger 23. Suitably mounted in the casing, and bearing with its opposite ends respectively against the pins 26, and the shoulder 27 of the bolt isa leaf spring 28, this spring normally forcing the bolt 11 longitudinally so that its nose 12 projects through the opening 13.

Secured in the casing and depending from the upper wall thereof is an electromagnet 29, the binding terminals 80 projecting above the top of the casing and connected with the ends of the coil of the electro-magnet. In the magnet is a movable core 31. the lower end of which is arranged to engage in an opening 32 formed in the upper edge of the bolt. Carried by the lower end portion oftliecore 31 is a disk 33. this disk normally resting on the free end of the finger 23 when no current is flowing through the magnet. Slidably mounted on the side of the bolt and spring held normally in alinement with the nose thereof is a plate 34, the outer end of which is beveled and disposed at the lower side of the be eled end of the bolt and beyond said bolt. This plate acts to raise the core 31 when the current is off, and when the door is slammed shut.

Leading from the terminals 30 are the electric conductors 35 and 36. the t'ormer of which is connected to one terminal of a lamp 37 and the other to the terminal 40 of a switch 41. From the other terminal of the lamp a conductor 38 leads to the terminal 39 of the switch. The switch is provided with the terminals 42 and 44 from which lead the conductors 43 and 45, said conductors being connected at their other ends to a generator 16. This generator is mounted on the axle of the car and is rotated thereby.

This lock is particularly adapted for use A the train is in motion, the doors are unlocked, and by reason of the fact that the generator is mounted on the axle of the car, current will be generated. This 911.61- gizes the electromagnet 29, and .draws upward the core 31, thus releasing the lower end or nose from the recess or opening 32 in the upper side of the bolt 11. By rotating the knob shank 15, which is provided with a knob arranged on the outside of the door, the bolt 11 may be withdrawn into the easing of the lock. The knob shank 18 may also be rotated to'withdraw the bolt into the casing, this shank being provided with a knob arranged on the inside of the door. When the shank 18 is rotated, the arm 22 engages with the rear wall of the notch 24: ofthe bolt 11 and pushes the bolt into the casing. During the motion of the train, the electromagnet is energized and holds the core 31 in elevated position so that by turning either of the. knobs the door can be opened from Within or from without. When the magnet becomes deenergized from the stopping of'the train, the core 31 drops and engages in the notch or recess 32. The knob spindle 15 cannot then be rotated, and it is impossible for a person to enter the toilet. Should a person be in the toilet when the train stops, he can open the door by the spindle 18. This is accomplished by the lifting of the core 31 by means of the finger 23, which is disposed beneath the disk' 33 of the said core. There is also a key 20 which the train guard can use to open the door from the outside, which by the turning thereof, will engage the arm "19 and raise the core of the magnet and withdraw the bolt.

The lamp 37 is used to let the orter of the car know that the lock is ren ered inoperative from the outside. It will be noted Copies '0: this patent may be obtained. for five cents each, by addressing the 'wall 25 of the bolt, so that the shank cannot be rotated from the outside of the door.

The lock can be operated at all times,

whether the magnet is energized or deener gized, fromthe inside, by means of the inner knob.

What is claimed is:

l. A look comprising a casing, a .bolt slidably mounted in the casing, a roll back for moving the bolt under normal conditions of the lock, said bolt being provided with a recess, an electromagnet having a core for engagement in the recess at times, a source of electricity connected with the electromagnet, and a second roll back capable of moving the bolt and lifting the core from the recess.

A look including a sliding bolt, a roll back engaging with the inner end of the bolt, for moving the same, electrically controlled means for engagement with the bolt to render the bolt immovable by the roll back, said bolt having a recess in one side thereof, a second roll back formed with an arm and two fingers, said arm and one of said fingers engaging in the recess, said finger. being arranged to move the electrically controlled means out of engagement.

with the bolt, said arm. being arranged to move the bolt, and said other finger being arranged to be engaged and moved by the web of a key. I

In testimony whereof, I aflix my signature, in the resence of two witnesses.

WILLIE A. SCHUTZMANN. Witnesses:

LOUIS INDESI-I, GEORGE SGHUTZMANN.

Commissioner of Patents.

Washington D. C."

Images