US1367781A - Electric pocket-lamp - Google Patents

Electric pocket-lamp Download PDF

Info

Publication number
US1367781A
US1367781A US124915A US12491516A US1367781A US 1367781 A US1367781 A US 1367781A US 124915 A US124915 A US 124915A US 12491516 A US12491516 A US 12491516A US 1367781 A US1367781 A US 1367781A
Authority
US
United States
Prior art keywords
armature
lamp
poles
electric pocket
pole
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
US124915A
Inventor
Junghans Joskar
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to US124915A priority Critical patent/US1367781A/en
Application granted granted Critical
Publication of US1367781A publication Critical patent/US1367781A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21L—LIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE OR SPECIALLY ADAPTED FOR TRANSPORTATION
    • F21L13/00—Electric lighting devices with built-in electric generators
    • F21L13/06—Electric lighting devices with built-in electric generators with mechanical drive, e.g. spring
    • F21L13/08—Electric lighting devices with built-in electric generators with mechanical drive, e.g. spring by reciprocating pusher actuated by hand

Definitions

  • the armature is constructed, as a rule, of the double-pole type.
  • Such armatures have the disadvantage that the poles will adjust themselves in the direction of the lines of force of the magnet when the rotation ceases.
  • a three-pole armature has, therefore, been employed, which, as will be obvious, will start equally well at all positions because its poles can neveradjust themselves in the direct line connecting the two poles of the magnet.
  • one of the poles of the armature is not wound with wire, andis only weighted by any other suitable means without the use of wire, so that a uniform balance is secured.
  • numeral 1 designates the hand-lamp having a lamp or bulb 2, an opcrating lever 3, a permanent field magnet 4, an armature 5, and gearing 6 for driving said armature.
  • the armature is a three-pole armature, the two poles 29 and 30 only having wire windings, while the pole 31 is weighted, in
  • the invention may receive other embodiments than that herein specifically illustrated and described.
  • a manually-operated dynamo hand lamp comprising a bipolar field magnet, and a tri-polar armature, two of said armature poles having windings, and one of said armature poles being unwound, and means for producing a relative movement of said magnet and armature.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • General Engineering & Computer Science (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)

Description

J O. JUNGHANS.
ELECTRIC POCKET LAMP.
APPLICATION FILED OCT. 10, 19l6.
1,367,781. Patented Feb. 8,1921.
UNITED STATES PATENT OFFICE.
J OSKAR JUNGHANS, OI SCHRAMBERG, GERMANY.
ELECTRIC POCKET-LAMP.
Specification of Letters Patent.
Patented Feb. 8, 1921.
Application filed October 10, 1916. Serial No. 124,915.
' the armature is constructed, as a rule, of the double-pole type. Such armatures, however, have the disadvantage that the poles will adjust themselves in the direction of the lines of force of the magnet when the rotation ceases. When the gearing of the lamp is to be started, first the maximum resistance of the'armature will have to be overcome, so that an easy starting of the gearing is prevented. According to the present invention,
a three-pole armature has, therefore, been employed, which, as will be obvious, will start equally well at all positions because its poles can neveradjust themselves in the direct line connecting the two poles of the magnet. In order to avoid the disadvantages which are encountered in the connection of the individual turns, when an alternating current is to be employed, what is desirable with regard to the lesser sensitiveness of the lamp, one of the poles of the armature is not wound with wire, andis only weighted by any other suitable means without the use of wire, so that a uniform balance is secured.
An example of the invention is shown in the accompanying drawing, wherein- Figures 1 and 2 illustrate a form of lampv with a special armature, according to the present invention, being respectively a top and side elevation, with parts broken away and in section. I
In said drawing, numeral 1 designates the hand-lamp having a lamp or bulb 2, an opcrating lever 3, a permanent field magnet 4, an armature 5, and gearing 6 for driving said armature.
The armature is a three-pole armature, the two poles 29 and 30 only having wire windings, while the pole 31 is weighted, in
a suitable manner, so as to secure auniform balancing.
With an armature of this type. theadvantages of a three-pole armature, regarding an easystarting, are combined with the better connections of a two-pole armature for pocket lamps, and a considerable improvement in the manipulation and the efiiciency of such lamps is secured.
The invention may receive other embodiments than that herein specifically illustrated and described.
What is claimed is A manually-operated dynamo hand lamp, comprising a bipolar field magnet, and a tri-polar armature, two of said armature poles having windings, and one of said armature poles being unwound, and means for producing a relative movement of said magnet and armature.
In witness whereof I have hereunto signed my name in the presence of two subscribing witnesses.
DR. OSKAR JUNGHANS.
Witnesses:
FRIDA KLAIBER, CONRAD KRAUSS.
US124915A 1916-10-10 1916-10-10 Electric pocket-lamp Expired - Lifetime US1367781A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US124915A US1367781A (en) 1916-10-10 1916-10-10 Electric pocket-lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US124915A US1367781A (en) 1916-10-10 1916-10-10 Electric pocket-lamp

Publications (1)

Publication Number Publication Date
US1367781A true US1367781A (en) 1921-02-08

Family

ID=22417404

Family Applications (1)

Application Number Title Priority Date Filing Date
US124915A Expired - Lifetime US1367781A (en) 1916-10-10 1916-10-10 Electric pocket-lamp

Country Status (1)

Country Link
US (1) US1367781A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3662240A (en) * 1969-05-28 1972-05-09 Matsushita Electric Ind Co Ltd Small-size direct current motor
WO1995029817A1 (en) * 1994-04-29 1995-11-09 Ian Bersten Storage system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3662240A (en) * 1969-05-28 1972-05-09 Matsushita Electric Ind Co Ltd Small-size direct current motor
WO1995029817A1 (en) * 1994-04-29 1995-11-09 Ian Bersten Storage system

Similar Documents

Publication Publication Date Title
US1367781A (en) Electric pocket-lamp
US1005163A (en) Transformer.
US1969981A (en) Single phase induction motor
US977192A (en) Electric-drop-cord adjuster.
US572430A (en) Electric-lighting mechanism for bicycles
US2258813A (en) Exciting direct current generator
US399402A (en) Prevention of sparking in electric generators and motors
US992992A (en) Combined lamp-support and automatic timing mechanism.
US661127A (en) Electrical measuring instrument.
US408513A (en) peeey
US605525A (en) System of electrical distribution
US1389051A (en) Continuous-current dynamo
US316502A (en) William m
US316501A (en) thomas
US534677A (en) Hans otto swoboda
US1260889A (en) System of motor control.
US678874A (en) Electric motor.
US1277003A (en) X-ray system.
US1171945A (en) Regulating mechanism for arc-lamps.
US1084364A (en) Windings for electrical machines.
US294038A (en) hocheausen
US523247A (en) Ernest tilmann
US1375192A (en) Dynamo
US586378A (en) Adjustable support for incandescent electric lights
US1738165A (en) Electric motor