US830533A - Electric brake. - Google Patents

Electric brake. Download PDF

Info

Publication number
US830533A
US830533A US24152505A US1905241525A US830533A US 830533 A US830533 A US 830533A US 24152505 A US24152505 A US 24152505A US 1905241525 A US1905241525 A US 1905241525A US 830533 A US830533 A US 830533A
Authority
US
United States
Prior art keywords
brake
motor
armature
lever
magnet
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
US24152505A
Inventor
Frank L Sessions
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.)
JOSEPH A JEFFREY
Original Assignee
JOSEPH A JEFFREY
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 JOSEPH A JEFFREY filed Critical JOSEPH A JEFFREY
Priority to US24152505A priority Critical patent/US830533A/en
Application granted granted Critical
Publication of US830533A publication Critical patent/US830533A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D63/00Brakes not otherwise provided for; Brakes combining more than one of the types of groups F16D49/00 - F16D61/00
    • F16D63/002Brakes with direct electrical or electro-magnetic actuation
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D66/00Arrangements for monitoring working conditions, e.g. wear, temperature
    • F16D2066/005Force, torque, stress or strain

Definitions

  • This invention relates to an improvement in electromagnetically-operated brakes for conveyor or elevatorsystems, it being piirtic ulcrly adapted to prevent the too rapid descent of the elevator or conveyor under the action of gravity.
  • Figure 1 is a side elevation of a conveyor system, provided with a brake embodying my improvements.
  • Fig. 2 is a plan view of the upper partof said system.
  • Fig. 3 is a diagrammatic view of the improved electromagnetic brake and the apparatus and wiring of the electrical circuit.
  • 1 represents a tipple adapted to deliver materialto an elongated endless carrier or conveyor 2, which is inclined to the horizon tal and is adapted. to retard the descentunder gravity of the material received by it.
  • 9 and-10 represent, respectively, the positive and negative conductors of a source of current-supply.
  • 11 is a double-pole single-throw switch arranged in the electrical circuit.
  • 1.2 is a starting-box having the resistance' controlling lever 12, which is adapted to engage with each of the series of resistance-controlling contacts 12. 13, 14, and 15 are binding-posts on the said starting-box.
  • 17 is a conductor connecting the binding post 13, the current-switching lever 12, and the binding-post 14 together.
  • the 18 is a rheosta-t for controlling the current in the motor field.
  • One terminal of this rheostat is connected by theconductor 19 to the binding-post 14 on the starting-box and the other terminal is connectedby the conductor 20 to one terminal 8 of the field-coil 8 of the motor.
  • the binding-post 15 on the startinghox is connected to one end of the resistance therein and also to'the brush 6 of the motor.
  • the other brush 7 of the motor is connected bya conductor 21 to a pole of the switch 11.
  • the terminal 8 of the motor field is connected to the said conductor 21. It will thus be seen that the field is connected directly across the armature-circuit.
  • the armature-shaft 5 has a pinion 22 thereon which is adapted to mesh with a bevelpinion 23 on the driving or head shaft 2'- of the conveyer 2.
  • 24 is a brake-wheel rigidly secured to the shaft .2.
  • 25 is a brake-band adapted to en'- gage with the periphery of said wheel
  • 26 is a lever adapted to control the action of the said brake-band in the well-known manner. This lever is pivotally supported at 26 and has suspended from its front end a weight 27,
  • the energizing-coil 28 of the brake-lifting magnet 28 is connected by conductor 30 to an electrical contact 31, carried by the starting-box 12. This contact is so arranged that the starting-lever 12 will engage with it prior to its engagement with the first of the series of contacts 12.
  • the other end of the magnet-coil 28 is connected by a conductor 32 to the energizing-coil 33 of the electromagnet 34, which is adapted to control the operation of the overload-release circuit breaker 35, which maybe of any well-known type. consisting of the electromagnet 34, the
  • One end of the ener zing-coil 33 of-the' magnet 34 is connecte to the contact 38.
  • FIG. 1 For illustration 1 have shown it as The -contact.39 is connected by a conductor 39 to the conductor of the motor field. It will be seen that the brake-lifting magnet 28 is connected directly across thearmature-circuit and in parallel with the motor field, it having in its circuit an overload-release-circuit breaker. When it is desired to operate the motor as a motor, current may be applied to it from the line 9 thro ugh.the starting-box 12.
  • the motor When the motor is being used as a generator-as, for example, when it is being used to retard the conveyor I 2the motor being a shunt-wound onean'd the direction of the rotation of the armature being the same as when the motor was-driven from a source of current-supply, its field- 8 .Will be energized in the same direction as when the motor was supplipd with current from the main line.' This will insure that the brake-lifting ma net 28 -will be properly energized, so as to a low the shaft 2" to revolve free of the retarding action of the brake.
  • weight 27 will operate to stop; the rotation of the head-shaft 2 either when the electromotive force in the circuit of the electromagnet 28 is greater than the predetermined amount or when it is insufficient to properly energize the coil 28 of the [said magnet, so that should the current throu h the system be interrupted in any manner t e weight will at once'operate to stop the motion of the shaft 2.
  • I claim. 1 The combination with asource of electrical supply and a, shunt-wound motor electrically connected therewith, of a brake connected with the armature-shaft of said motor and adapted normally to oppose its rotation,
  • an electromagnet for releasing said brake, and an electromagnetically-operated circuitbreaker having its energizing-coil connected in series with the energizing-coil of said brakereleasin magnet, the said coil being connected directly across the current-supply line in parallel with the armature of the motor.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Stopping Of Electric Motors (AREA)

Description

No. 830,533. 1 PATENTED SEPT. 11,,190 6-* F. L. SESSIONS.-
ELEOTRIG BRAKE. APPLICATION mum umn, 1 905.
2 SHEETS-SHEET 1.
q/vibmoom PATENTED SEPT; 11, 1906. P. L. SESSIONS. ELECTRIC BRAKE.
APPLIUATION FILED JAN. 17, 1905.
2 BHEETSHEET 2.
WUL (MMLM auoeufoz" T v .UNITED sTATEs PATENT oEEroE.
remain-L. SESSIONS, OF COLUMBUS, Ohio, ASSIGNOR To JosEPEA. JEFFREY, OF COLUMBUS, orno. v
ELECTRIC BRAKE.
Specification of Letters Patent.
Patented Sept. 11, 1906.
Application filed January 17, 1905. Serial No. 241.525.
To all wit/i121 it may concern: Be it known that I, FRANK L. SESSIONS, a citizen of the United States, residing at C0- lumbus, in the county of Franklin and State of Ohio, have invented certain new and useful Improvements in Electric Brakes, of which the following is a. specification, reference being had therein to the accompanying drawlngs.
This invention relates to an improvement in electromagnetically-operated brakes for conveyor or elevatorsystems, it being piirtic ulcrly adapted to prevent the too rapid descent of the elevator or conveyor under the action of gravity.-
Figure 1 is a side elevation of a conveyor system, provided with a brake embodying my improvements. Fig. 2 is a plan view of the upper partof said system. Fig. 3 is a diagrammatic view of the improved electromagnetic brake and the apparatus and wiring of the electrical circuit.
1 represents a tipple adapted to deliver materialto an elongated endless carrier or conveyor 2, which is inclined to the horizon tal and is adapted. to retard the descentunder gravity of the material received by it.
3 is a trough in which the said conveyor operates.
4 represents a shunt-wound motor having the armature 5, the brushes 6 7, and the mo tor field 8.
9 and-10 represent, respectively, the positive and negative conductors of a source of current-supply.
11 is a double-pole single-throw switch arranged in the electrical circuit.
. 1.2 is a starting-box having the resistance' controlling lever 12, which is adapted to engage with each of the series of resistance-controlling contacts 12. 13, 14, and 15 are binding-posts on the said starting-box.
16 is a conductor leading from one pole of the switch 11 to the binding-post 13.
17 is a conductor connecting the binding post 13, the current-switching lever 12, and the binding-post 14 together.
18 is a rheosta-t for controlling the current in the motor field. One terminal of this rheostat is connected by theconductor 19 to the binding-post 14 on the starting-box and the other terminal is connectedby the conductor 20 to one terminal 8 of the field-coil 8 of the motor. The binding-post 15 on the startinghox is connected to one end of the resistance therein and also to'the brush 6 of the motor. The other brush 7 of the motor is connected bya conductor 21 to a pole of the switch 11. The terminal 8 of the motor field is connected to the said conductor 21. It will thus be seen that the field is connected directly across the armature-circuit.
The armature-shaft 5 has a pinion 22 thereon which is adapted to mesh with a bevelpinion 23 on the driving or head shaft 2'- of the conveyer 2.
24 is a brake-wheel rigidly secured to the shaft .2. 25 is a brake-band adapted to en'- gage with the periphery of said wheel, and 26 is a lever adapted to control the action of the said brake-band in the well-known manner. This lever is pivotally supported at 26 and has suspended from its front end a weight 27,
' band tightly to the brake-wheel.
28 is an electromagnet the core 28. of which is pivotally connected to the outer end of the lever :26. This magnet is arranged to apply sufficient force to the said lever to lift it and the wei ht 27, so as to release the brake-band am? permit the revolution of the brake-wheel and shaft 2. Y
The energizing-coil 28 of the brake-lifting magnet 28 is connected by conductor 30 to an electrical contact 31, carried by the starting-box 12. This contact is so arranged that the starting-lever 12 will engage with it prior to its engagement with the first of the series of contacts 12. The other end of the magnet-coil 28 is connected by a conductor 32 to the energizing-coil 33 of the electromagnet 34, which is adapted to control the operation of the overload-release circuit breaker 35, which maybe of any well-known type. consisting of the electromagnet 34, the
- switch-lever 36, the detent for controlling said lever 37, the contact 38, with which the said switch is ada ted to engage when in operative position, tl ie contact 39, to which said switch-lever is pivotally connected, and the spring 40, adapted to cause the disengagement of said switch-lever from the contact 38 when the magnet operatesto release the said detent.
One end of the ener zing-coil 33 of-the' magnet 34 is connecte to the contact 38.
For illustration 1 have shown it as The -contact.39 is connected by a conductor 39 to the conductor of the motor field. It will be seen that the brake-lifting magnet 28 is connected directly across thearmature-circuit and in parallel with the motor field, it having in its circuit an overload-release-circuit breaker. When it is desired to operate the motor as a motor, current may be applied to it from the line 9 thro ugh.the starting-box 12. In view of the fact that the switching-lever 12 engages with the contact 31 prior to its engagement with the first of the series of'contacts 12", which controlthe flow of current to the armature, it will be seen that the magnet-coil 28 will be energized prior to the energizing of-the armature-coils and that in consequence the brake-weight 27 'will be elevated by the action of the electro-..
magnet 28 and the tension on the brake-band released, so that the armature can be caused to rotate free of the resistance of the brake.
When the motor is being used as a generator-as, for example, when it is being used to retard the conveyor I 2the motor being a shunt-wound onean'd the direction of the rotation of the armature being the same as when the motor was-driven from a source of current-supply, its field- 8 .Will be energized in the same direction as when the motor was supplipd with current from the main line.' This will insure that the brake-lifting ma net 28 -will be properly energized, so as to a low the shaft 2" to revolve free of the retarding action of the brake. Should thel'oad upon the conveyer 2 become so great as to cause speed, this increase of speed of rotation willthe armature 5 to revolve above the desired develop a suflicient electromotive force to send an excessivecurr nt through the circuit '1 of the brake-lifting m gnet, with the result that the circuit-breaker will be opened,
breaking the circuit and permitting the when it is running as a generator. 5
- sary weight'27 to descend under the actiongof gravity'and to immediately apply the brake applied. It will be understood that numer ous modificationsof my proposed manner of operating anelectroma 'netcontrol for. a brake mechanism may be devised without de arting form the spirit of my invention.
hen the motor is operating as a generator,- the current flows from the field 81 to the rheostat 18, thence to the starting-box 12,
from the contact 31 thereon through the magnet-coils 28" and 33, and thence back to the field. The current through the said energizing-coils is inthe samedirection that it was v when they" were supplied from the source of current-supply.
It will'be seen that weight 27 will operate to stop; the rotation of the head-shaft 2 either when the electromotive force in the circuit of the electromagnet 28 is greater than the predetermined amount or when it is insufficient to properly energize the coil 28 of the [said magnet, so that should the current throu h the system be interrupted in any manner t e weight will at once'operate to stop the motion of the shaft 2.
I claim. 1. The combination with asource of electrical supply and a, shunt-wound motor electrically connected therewith, of a brake connected with the armature-shaft of said motor and adapted normally to oppose its rotation,
an electromagnet for releasing said brake and an electromagneticallymperated circuitbreaker, the energizing-coils of the brake-releasing magnet and the circuit-breaker being in series with each other and connected directly across the current-supply line inparallel with the armature of the'motor. v
2. The'combination with a source of elec trical supply and a motor electrically. cohnected therewith, of a brake connected with the armature-shaft of said motor and adapt.-
ed to normally oppose the rotation thereof,
an electromagnet for releasing said brake, and an electromagnetically-operated circuitbreaker having its energizing-coil connected in series with the energizing-coil of said brakereleasin magnet, the said coil being connected directly across the current-supply line in parallel with the armature of the motor.
In testimony whereof I aflix my signature in presence of two witnesses.
FRANK L. SESSIONS.
Witnesses:
F. E. VAN SLYKE, C. L. MoCoNKEY.
US24152505A 1905-01-17 1905-01-17 Electric brake. Expired - Lifetime US830533A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US24152505A US830533A (en) 1905-01-17 1905-01-17 Electric brake.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US24152505A US830533A (en) 1905-01-17 1905-01-17 Electric brake.

Publications (1)

Publication Number Publication Date
US830533A true US830533A (en) 1906-09-11

Family

ID=2899009

Family Applications (1)

Application Number Title Priority Date Filing Date
US24152505A Expired - Lifetime US830533A (en) 1905-01-17 1905-01-17 Electric brake.

Country Status (1)

Country Link
US (1) US830533A (en)

Similar Documents

Publication Publication Date Title
US830533A (en) Electric brake.
US973926A (en) Electric brake.
US449662A (en) System of operating electric elevators with landing-switches only
US467078A (en) Rheostat
US324621A (en) Electric elevator
US1091738A (en) Electric brake.
US897537A (en) Electric controlling mechanism.
US761877A (en) Insulating-block for electric conductors.
US994345A (en) Current-controlling apparatus.
US471064A (en) Electric elevator
US568569A (en) Brake mechanism for electric elevators
US568566A (en) Construction and operation of circuits for electric motors
US665541A (en) Electric-lighting system.
US816806A (en) Electric traction-elevator.
US552521A (en) Stephen d
US440976A (en) System of electrical transmission of power
US1427644A (en) Electric-elevator-control system
US273208A (en) wheeler
US641157A (en) Switch for electric motors.
US834010A (en) Electrical controller.
USRE11718E (en) Electrical controlling apparatus
US552094A (en) Automatic electric switch
US321149A (en) sprag-ue
US510932A (en) Electric elevator
US830242A (en) System of motor control.