US1142852A - Electromagnet and solenoid. - Google Patents

Electromagnet and solenoid. Download PDF

Info

Publication number
US1142852A
US1142852A US79451713A US1913794517A US1142852A US 1142852 A US1142852 A US 1142852A US 79451713 A US79451713 A US 79451713A US 1913794517 A US1913794517 A US 1913794517A US 1142852 A US1142852 A US 1142852A
Authority
US
United States
Prior art keywords
solenoid
plunger
switch
stationary
auxiliary
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US79451713A
Inventor
Arthur Simon
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Cutler Hammer Manufacturing Co
Original Assignee
Cutler Hammer Manufacturing Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Cutler Hammer Manufacturing Co filed Critical Cutler Hammer Manufacturing Co
Priority to US79451713A priority Critical patent/US1142852A/en
Application granted granted Critical
Publication of US1142852A publication Critical patent/US1142852A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02DCONTROLLING COMBUSTION ENGINES
    • F02D41/00Electrical control of supply of combustible mixture or its constituents
    • F02D41/20Output circuits, e.g. for controlling currents in command coils

Description

A. SIMON.

ELECTROMAGNET AND'SOLENOID.

APPLICATION FILED JUNE 6, I910. RENEWED OCT. 10,1913.

1,142,852. Patented June 15 1915.

UNITED STATES PATENT OFFICE.

ARTHUIL SIMON, OF'MILWAUKEE, WISCONSIN, ASSIGNOR TO THE CUTLER-HAMMER MFG. (30., OF MILWAUKEE, WISCONSIN, A CORPORATION OF WISCONSIN.

ELECTBOMAGNET AND SOLENOID.

Specification of Letters Patent. Patented June 15, 1915.

Application filed June 6, 1910, Serial No. 565,21 1. Renewed October 10, 1913. Serial No. 794,517.

To all whom it may concern: 1

Be it known that I, ARTHUR SIMON, a citizen of the United States, residing at Milwaukee, in the county of Milwaukee and State of Wisconsin, have invented new and useful Improvements in Electromagnets and Solenoids, of which the following is a full, clear, concise, and exact description, reference being had to the accompanyin drawing, forming a part of this specification. I

My invention relates to improvements in electromagnets, or solenoids.

1 It is the principal object of my: invention to provide an electromagnet, or solenoid which will automatically reduce theamount of current flowing through its energizingwinding after the same has responded, but not until the plunger, or movable armature thereof, has reached the full limit of its stroke. I

Various other objects and advantages of my invention will hereinafter beclearlyand fully set forth.-

In order to more fully disclose the nature and characteristic features of my invention, I shall describe the device illustrated in the accompanying drawing which embodies my invention in one form. It should be understood, however, that my invention is susceptible of various modifications and is not limited to the particular embodiment there of illustrated in the drawing.

In the accompanying drawing, Figure 1 illustrates a sdlenoid operated switch embodying my invention in its preferred form, the solenoid winding and the stationary plug thereof.being shown in section, and Fig. 2 is a view of the auxiliary switch its cooperating contacts illustrating a modification or my invention.

The device illustrated in Fig. 1 comprises essentially a magnet frame 8, in which is mounted an electromagnetic winding 4. Within the winding 4: is arranged a longitudinal plunger 5 arranged to engage and seal with a stationary plug 6 suitably sccured to the magnet frame and projecting into the upper end of the solenoid winding. Of course, the solenoids may be used for various different purposes As illustrated, the plunger thereof is provided with a tail tionary contacts 1st and 15 and is normally' ,held in' engagementtherewith by the coil spring 16 surrounding the stem 13 thereof, and bearing against the stationary plug 6. Inthe present instance, the auxiliary switch is arranged to control a resistance 18, which "is short-circuited thereby when said auxiliary switch engages its stationary contacts.

Before describing the operation and functions of the switch illustrated in the drawing, I desire to briefly discuss the conditions existing in the switch heretofore designed to automatically reduce the amount of current flowing through the same. Where it has been desired to accomplish this result, it has been customary to provide a solenoid with an auxiliary switch arranged to control a resistance similar to the resistance 18 which, as will hereinafter be described, is arranged to be connected in series with the solenoid winding. Heretofore, however, it has been customary to operate the auxiliary switch mechanically as the plunger of the solenoid approaches the limit of its movement. Ordinarily the auxiliary switch has been arranged to be operated by the plunger itself. Thus in order to secure operation of the auxiliary switch it has been necessary to so adjust the same that it will be operatedjust prior to the sealing of the plunger with the stationary plug. Hence, the protective resistance has necessarily been inserted in circuit with the solenoid winding before its plunger has actually sealed with the stationary core. Ordinarily the protective resistance is only required where over excitation is required to operate the solenoid plunger owing to its load. Hence, if the protecting resistance is inserted in series with the solenoid winding before the plunger has firmly sealed with the stationary plug, either the plunger will not be attracted to the full extent of its movement,

or else it will only be finally sealed with the stationary plug after objectionable vibrating, or telegraphing thereof. This vibrating, or telegraphing is due to the premature 5 reduction in the magnetic attraction by the insertion. of the protective resistance.

It is to avoid the decrease of the magnetic pull of the solenoid, before the plunger is moved to its full extent, that my invention is particularly aimed. I shall now describe the operation of the switch illustrated in the drawing to show that the same will accomplish this result. 1 v

Let it be assumed that current is supplied to the solenoid winding 4 from supply lines 20 and 21, the circuit of said solenoid winding being controlled at will by a control switch 21 With the parts in the position illustrated, upon closure of switch 21. the

5 circuit is closed as follows: From main line 20, through switch 2?, by conductor 22, through. auxiliary switch 12, by conductor 23, through the solenoid winding l, to conductor 21. The solenoid winding is thereupon energized tending to draw its plunger upwardly. The spring 16 is so adjusted as to prevent the magnetic attractionof the auxiliary switch until the sol noid plunger 5 has sealed with the stationary plug T is is hy fact that dun ing the movement of the solenoid plunger, current and consequently the magnetism is malntained below normal value due to strength ger seals with the stationary core. While the magnetism. of the solenoid remains below normal, only a comparatively few magnetic lines of force stray through the stem of the auxiliary switch with the result that the spring 16 will overcome the slight magnetic pull thus exerted upon the auxiliary switch When, however, the plunger seals with the stationary plug the current and the magnetism rise to the maximum strength. thereby saturating the plug with magnetic pines of force, a suflicient number of said ines of force now passing through the stern of the auxiliary switch to attract the same against the opposition of the spring 16.,

' other words, the stem of the auxiliary switch in efi'ect forms an auxiliary plunger for the solenoid winding,'which owing to the an rangement thereof in the stationary plug and further owing to the resistance of the spring 16, will not be attracted until the main plunger has been moved to its full extent, thereby sealing with the stationary plug 6. As soon as the auxiliary switch l2 is drawn away from its stationary contacts, the protective resistance 18 is inserted in se ries with the solenoid winding, thereby reducing the flow of current through said winding to a safe value. However, even with the resistance iii in circuit a suficient Secondly, the coils 25 and 26 self-inductance and only amount of current is allowed to pass through the solenoid winding to maintain the plunger 5 in raised position. lhe auxiliary switch will be maintained in its re tracted position until the solenoid winding is deenergized, whereupon the spring 16 will again move the same into engagement with its stationary contacts.

In Fig. 2, the stationary contact of the auxiliary switch is connected to conductor 22, through a coil surrounding said contact. Likewise the contact 14L of the auxiliary switch is connected to conductor 23, through a coil 26 similar to the coil 25. The coils 25 and 26 perform a twofold function. In the first place, they create a magnetic flux which tends to magnetically hold the auxiliary switch 12 in engagement with the contacts i l and 15. @f course, this magnetic attraction of the auxiliary switch opposes the pull of the solenoid winding 4; and, therefore, must be taken into account in adjusting the spring 16, to insure the magnetic attraction of the solenoid i overcoming the combined opposition of the spring and the magnetic attraction of the coils 25 and 26, at the proper time. The auxiliary switch heing magnetically attracted to the contacts 14 and it will, when finally attracted by the ing' leave contacts with a snap action, thereby giving a quick break of the short-circuit around the resistance 18. will create a magnetic flux which will extingush any arcs drawn ruxiliary switch and stationary contacts upon separation thereof.

As before set forth, my invention is susceptible to various modifications and, therefore, the structure illustrated and heretofore described should not be considered as limiting the scope of my invention.

Having thus described my invention, what. I claim as new and desire to secure by Let ters l atent, is:

l. A solenoid having a main plunger and an auxiliary plunger, the latter being attracted only after a predetermined movement of the former and controlling means for said solenoid actuated by said auxiliary plunger,

2H V 5! having a stationary pole piece a movable magnetically attracted part adapted to seal with said pole piece, of a switch having a magnetic portion projecting into said pole piece and arranged to he electromagnetically moved to operate said switch to reduce the ilow of current through electromagnet, and means for preventing operation of said auxiliary switch until said movable magnetically attracted part has sealed with said pole piece. l

3. The combination with a solenoid having a stationary core anda movable plunger arranged to seal with said core, of an auxiline combination with electromagnet.

iary switch having a magnetic portion projecting into said core and forming an auxiliary plunger for said solenoid, said auxiliary plunger being adapted to be attracted after said first mentioned plunger has sealed with said stationary core to operate said switch to reduce the flow of current through the solenoid winding.

4;. The combination with a solenoid having a stationary core and movable plunger arranged to seal with said core, of a switch having a magnetic portion projecting into said core and formin an auxiliary plunger for said solenoid, sai switch being adapted when operated to reduce the flow of current through the solenoid winding, and means for preventing the attraction of said switch until said plunger has sealed with said stationary core.

5. The combination with a solenoid having a stationary core and movable plunger arranged to seal with said core, of a switch having a magnetic portion projecting into said core and formin an auxiliary plunger for said solenoid, said switch being adapted when operated to reduce the flow of current through the solenoid winding, and a spring interposed between said switch and sai stationary core for preventing the attraction thereof by said solenoid until said plunger has sealed with said stationary core.

6. The combination with an electromagnet having a movably magnetically attracted part, of a switch adapted to be magnetically attracted by said magnet to reduce the flow of current therefrom after the movable magnetic-ally attracted part has reached the full limit of its movement, an electromagnetic means tending to hold said switch in engagement with its stationary contacts.

7. The combination with an electromagnet having a movable magnetically attracted part, of a switch adapted to be magnetically attracted by said magnet to reduce the flow of current therethrough, after the movable magnetically attracted part has reached the full limit of its movement, and electromagnetic windings provided with pole pieces forming the stationary contacts of said switch. In witness whereof, I have hereunto subscribed my name in the presence of two witnesses.

ARTHUR SIMON.

Witnesses:

FRANK H. HUBBARD, GEORGE HAYNES.

US79451713A 1913-10-10 1913-10-10 Electromagnet and solenoid. Expired - Lifetime US1142852A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US79451713A US1142852A (en) 1913-10-10 1913-10-10 Electromagnet and solenoid.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US79451713A US1142852A (en) 1913-10-10 1913-10-10 Electromagnet and solenoid.

Publications (1)

Publication Number Publication Date
US1142852A true US1142852A (en) 1915-06-15

Family

ID=3210945

Family Applications (1)

Application Number Title Priority Date Filing Date
US79451713A Expired - Lifetime US1142852A (en) 1913-10-10 1913-10-10 Electromagnet and solenoid.

Country Status (1)

Country Link
US (1) US1142852A (en)

Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2427719A (en) * 1943-04-27 1947-09-23 Westinghouse Electric Corp Polarized direct-current contactor
US2434601A (en) * 1947-02-28 1948-01-13 Westinghouse Electric Corp Electromagnetic device
US2435280A (en) * 1943-06-28 1948-02-03 Niles Bement Pond Co Circuits for tracer controlled machine tools
US2443122A (en) * 1944-05-26 1948-06-08 Rca Corp Electrical control circuit
US2448475A (en) * 1942-10-27 1948-08-31 Robertshaw Fulton Controls Co Safety control apparatus for fuel burners
US2474487A (en) * 1947-06-10 1949-06-28 Bendix Aviat Corp Backfire circuit breaker
US2486240A (en) * 1945-08-18 1949-10-25 Westinghouse Electric Corp Electric circuit for retentive type relays
US2513578A (en) * 1947-04-15 1950-07-04 Milwaukee Gas Specialty Co Safety shutoff control system for gas burners
US2525470A (en) * 1945-02-16 1950-10-10 Westinghouse Electric Corp Valve mechanism
US2536249A (en) * 1944-12-18 1951-01-02 Campbell Taggart Res Corp Machine for panning bread and like doughs
US2544511A (en) * 1944-09-30 1951-03-06 Missouri Automatic Contr Corp Safety heat control system
US2550297A (en) * 1944-09-04 1951-04-24 Gen Controls Co Electromagnetically operated valve
US2550605A (en) * 1945-07-25 1951-04-24 Bell Telephone Labor Inc Circuit closing device
US2571803A (en) * 1949-01-18 1951-10-16 Gen Electric Electromagnet control mechanism with two armatures
US2595251A (en) * 1948-02-26 1952-05-06 Us Interior Short-circuiting contactor for direct-current circuits
US2607262A (en) * 1949-03-10 1952-08-19 Kane Corp Du Film advance mechanism for projectors
US2648746A (en) * 1949-05-31 1953-08-11 Bendix Aviat Corp Engine-function switching mechanism
US2658171A (en) * 1950-05-17 1953-11-03 Ami Ind Inc Credit unit
US2661022A (en) * 1945-01-09 1953-12-01 Merlin Gerin Fluid control device
US2694163A (en) * 1951-03-16 1954-11-09 Joseph G Sola Voltage sensitive apparatus
US2718951A (en) * 1950-08-25 1955-09-27 Warner Electric Brake & Clutch Electromagnetic friction device and control
US2722274A (en) * 1952-02-28 1955-11-01 Missouri Automatic Contr Corp Means for insuring the correct positioning of strip stock in progressive punch press dies
US2737614A (en) * 1953-03-23 1956-03-06 Bell Telephone Labor Inc Pulse divider
US2840686A (en) * 1955-02-28 1958-06-24 Westinghouse Electric Corp High speed resistance welding control
US2923864A (en) * 1955-09-27 1960-02-02 Marvin Goodson Solenoid structure and control
US3018418A (en) * 1958-04-30 1962-01-23 Cannon Electric Co Solenoid
DE1166369B (en) * 1960-09-12 1964-03-26 Harting Elektro W Lifting magnet for a contact arrangement saving circuit
US3309636A (en) * 1964-01-31 1967-03-14 Westinghouse Electric Corp Electrically operated switch having improved armature and linkage means
US5784244A (en) * 1996-09-13 1998-07-21 Cooper Industries, Inc. Current limiting circuit

Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2448475A (en) * 1942-10-27 1948-08-31 Robertshaw Fulton Controls Co Safety control apparatus for fuel burners
US2427719A (en) * 1943-04-27 1947-09-23 Westinghouse Electric Corp Polarized direct-current contactor
US2435280A (en) * 1943-06-28 1948-02-03 Niles Bement Pond Co Circuits for tracer controlled machine tools
US2443122A (en) * 1944-05-26 1948-06-08 Rca Corp Electrical control circuit
US2550297A (en) * 1944-09-04 1951-04-24 Gen Controls Co Electromagnetically operated valve
US2544511A (en) * 1944-09-30 1951-03-06 Missouri Automatic Contr Corp Safety heat control system
US2536249A (en) * 1944-12-18 1951-01-02 Campbell Taggart Res Corp Machine for panning bread and like doughs
US2661022A (en) * 1945-01-09 1953-12-01 Merlin Gerin Fluid control device
US2525470A (en) * 1945-02-16 1950-10-10 Westinghouse Electric Corp Valve mechanism
US2550605A (en) * 1945-07-25 1951-04-24 Bell Telephone Labor Inc Circuit closing device
US2486240A (en) * 1945-08-18 1949-10-25 Westinghouse Electric Corp Electric circuit for retentive type relays
US2434601A (en) * 1947-02-28 1948-01-13 Westinghouse Electric Corp Electromagnetic device
US2513578A (en) * 1947-04-15 1950-07-04 Milwaukee Gas Specialty Co Safety shutoff control system for gas burners
US2474487A (en) * 1947-06-10 1949-06-28 Bendix Aviat Corp Backfire circuit breaker
US2595251A (en) * 1948-02-26 1952-05-06 Us Interior Short-circuiting contactor for direct-current circuits
US2571803A (en) * 1949-01-18 1951-10-16 Gen Electric Electromagnet control mechanism with two armatures
US2607262A (en) * 1949-03-10 1952-08-19 Kane Corp Du Film advance mechanism for projectors
US2648746A (en) * 1949-05-31 1953-08-11 Bendix Aviat Corp Engine-function switching mechanism
US2658171A (en) * 1950-05-17 1953-11-03 Ami Ind Inc Credit unit
US2718951A (en) * 1950-08-25 1955-09-27 Warner Electric Brake & Clutch Electromagnetic friction device and control
US2694163A (en) * 1951-03-16 1954-11-09 Joseph G Sola Voltage sensitive apparatus
US2722274A (en) * 1952-02-28 1955-11-01 Missouri Automatic Contr Corp Means for insuring the correct positioning of strip stock in progressive punch press dies
US2737614A (en) * 1953-03-23 1956-03-06 Bell Telephone Labor Inc Pulse divider
US2840686A (en) * 1955-02-28 1958-06-24 Westinghouse Electric Corp High speed resistance welding control
US2923864A (en) * 1955-09-27 1960-02-02 Marvin Goodson Solenoid structure and control
US3018418A (en) * 1958-04-30 1962-01-23 Cannon Electric Co Solenoid
DE1166369B (en) * 1960-09-12 1964-03-26 Harting Elektro W Lifting magnet for a contact arrangement saving circuit
US3309636A (en) * 1964-01-31 1967-03-14 Westinghouse Electric Corp Electrically operated switch having improved armature and linkage means
US5784244A (en) * 1996-09-13 1998-07-21 Cooper Industries, Inc. Current limiting circuit

Similar Documents

Publication Publication Date Title
US3755766A (en) Bistable electromagnetic actuator
EP1490884B1 (en) Resettable switching device
JP6235374B2 (en) Switch operating mechanism
USRE24209E (en) bernstein
US4546339A (en) Pole structure for a polarized electromagnet
US3514674A (en) Device for electromagnetically controlling the position off an armature
JP6300157B2 (en) Electromagnetic relay
JP4685499B2 (en) Magnetic drive for valves
JP2009521074A (en) Switching device operating method and operating device
FR2542497A1 (en) Hybrid linear control device
US2427750A (en) Capacitor closed relay having retentive magnetic circuit
US2850258A (en) Electromagnetically operated valve
US3458769A (en) Electrically controlled valve
US20140028420A1 (en) Moving Magnet Actuator with Counter-Cogging End-Ring and Asymmetrical Armature Stroke
US3634735A (en) Self-holding electromagnetically driven device
US8581682B2 (en) Magnet aided solenoid for an electrical switch
KR930006510B1 (en) Solenoid valve
US1915566A (en) Controlling electromagnets for lifting and transporting and in apparatus therefor
US20080204176A1 (en) Unequally tapped coil solenoid valve
US9136053B2 (en) Solenoid device
US2476794A (en) Contactor
JP5137960B2 (en) Electro-pneumatic pressure transducer
US20190341214A1 (en) Electromagnetic relay
GB1479503A (en) Magnetic holding means for an electric switching device
US9548174B2 (en) Contractor assembly which counteracts electromagnetic repulsion of contacts