US1359656A - Headlight-dimmer - Google Patents

Headlight-dimmer Download PDF

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Publication number
US1359656A
US1359656A US345982A US34598219A US1359656A US 1359656 A US1359656 A US 1359656A US 345982 A US345982 A US 345982A US 34598219 A US34598219 A US 34598219A US 1359656 A US1359656 A US 1359656A
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Prior art keywords
head
dimmer
headlight
contacts
wire
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Expired - Lifetime
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US345982A
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William C Baker
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
    • B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
    • B60Q1/14—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights having dimming means
    • B60Q1/1415—Dimming circuits

Definitions

  • the object of this invention is the construction of improved means for reducing or dimming at will the intensity of illumination of the head lights of automobiles and the like, both for the purpose of saving approaching vehicles or of pedestrians crossing the road ahead from the blinding effects of the glare, and also as a means for signaling to other automobiles or trucks.
  • Figure 1 is a central vertical section of a dimmer embodying my improvements, showing the same wired to a head light and a source of current.
  • Fig. 2 is a horizontal section on the line in Fig. 1.
  • the dimmer comprises a stem or bolt 6 having a broad head 7 at its lowerend. and a button 9 at its upper end.
  • twb contact blocks 10. 11 one in circuit. with the wire 4 and the other with the wire 'ith the head 7 thus in touch with both of the contacts 10 and 11. the current passes from the source 3 through the wire 5 to the c contact 10, thence through the head 7 to the contact 11, and the wire 4 to the light 1, then through the wire 2 back to the source.
  • the bolt 6 is normally held with its head 7 in touch with the contacts 10, 11 by means of a helical spring 16 between a plate 17 which is suitably fastened to the sleeve 12 and to the automobile floor or other suitable place, and the under surface of the button 9 or a washer 18 beneath it, which is preferahly screwed onto the bolt 6.
  • a head light dimmer comprising a thimble composed of insulating material, the thimble having a contracted portion near its upper end, resistance coils located in said contracted portion, contact terminals attached to the lower portion of said thimble, one contact terminal in circuit with one terminal of said coils and the other with the other terminal of the coils, a plunger located in the axial center of said thimble and freely reciprocative therein, said plunger having a head at its lower end adapted to be in touch with both of said contact terminals when the plunger is in its uppermost position, a knob attached to the upper end of said plunger, and a helical spring between said knob and thimble for normally holding the said head in touch with said contact terminals.

Description

W. C. BAKER.
HEADLIGHT DIMMER.
APPLICATION FILED DEC. 19, 1919.
1,359,656, Patented Nov; 23, 1920.
mlliam C.Ba7er;
iv W
CL or-ney.
UNITED STATES PATENT OFFICE.
WILLIAM C. BAKER, F AMESBURY, MASSACHUSETTS.
Application filed December 19, 1919.
To all whom it may concern Be it known that I, VILLIAM C. BAKER, a citizen of the United States, and a resident of Amesbury, in the county of Essex and Commonwealth of Massachusetts, have invented certain new and useful Improvements in Headlight-Dimmers, of which the following is a full, clear, and exact specification.
The object of this invention is the construction of improved means for reducing or dimming at will the intensity of illumination of the head lights of automobiles and the like, both for the purpose of saving approaching vehicles or of pedestrians crossing the road ahead from the blinding effects of the glare, and also as a means for signaling to other automobiles or trucks.
To this end I have provided a foot operated push button adapted when depressed to switch into the lighting circuit a sufficient amount of resistance to reduce the-intensity of the electric head light the desired extent.
In the drawings forming part of this specification, Figure 1 is a central vertical section of a dimmer embodying my improvements, showing the same wired to a head light and a source of current. Fig. 2 is a horizontal section on the line in Fig. 1.
As shown, the head light 1 is connected by a wire 2 to a source of current 3, while wires 4 and 5 pass respectively from the head light and the. current source to the dimmer.
The dimmer comprises a stem or bolt 6 having a broad head 7 at its lowerend. and a button 9 at its upper end. Normally in contact with the head 7 are twb contact blocks 10. 11, one in circuit. with the wire 4 and the other with the wire 'ith the head 7 thus in touch with both of the contacts 10 and 11. the current passes from the source 3 through the wire 5 to the c contact 10, thence through the head 7 to the contact 11, and the wire 4 to the light 1, then through the wire 2 back to the source.
The contacts 10, 11 are supported by an nsulating sleeve 12 through which the bolt (3 freely passes,-and spaced from these contacts is a coil of insulating wire 13 for which the sleeve 12 acts as an insulating HEADLIGHT-DINNER.
Patented Nov. 23, 1920.
Serial No. 345,982.
spool. The terminals of this coil are connected, as by wires 14, 15, to the contacts 10, 11, so that whenever the bolt head 7 is depressed and thereby breaks the circuit between these contacts, the only path for the current is through the wires 14, 15 and the c011 13. The amount of resistance thus introduced into the circuit at once reduces the intensity of current delivered to the head light, and correspondingly reduces the intensity of its illumination.
The bolt 6 is normally held with its head 7 in touch with the contacts 10, 11 by means of a helical spring 16 between a plate 17 which is suitably fastened to the sleeve 12 and to the automobile floor or other suitable place, and the under surface of the button 9 or a washer 18 beneath it, which is preferahly screwed onto the bolt 6.
Thus constructed, all that needs to be done in order to dim the head light is to press down on the button 9 sufficiently to remove its head 7 out of touch with the contacts 10, 11. If the chauifeur'wishes to flash a signal to someone ahead, he can d epress thebutton in a series of dots and dashesor other combinations of alternating light and semi-darkness.
lVhat I claim is: I
A head light dimmer comprising a thimble composed of insulating material, the thimble having a contracted portion near its upper end, resistance coils located in said contracted portion, contact terminals attached to the lower portion of said thimble, one contact terminal in circuit with one terminal of said coils and the other with the other terminal of the coils, a plunger located in the axial center of said thimble and freely reciprocative therein, said plunger having a head at its lower end adapted to be in touch with both of said contact terminals when the plunger is in its uppermost position, a knob attached to the upper end of said plunger, and a helical spring between said knob and thimble for normally holding the said head in touch with said contact terminals.-
In testimony that I claim the foregoing invention, I have hereunto set my hand this 16th day of December 1919.
WILLIAM C, BAKER,
US345982A 1919-12-19 1919-12-19 Headlight-dimmer Expired - Lifetime US1359656A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5666100A (en) * 1995-09-15 1997-09-09 Data Instruments, Inc. Linear potentiometer with a floating pin joint

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5666100A (en) * 1995-09-15 1997-09-09 Data Instruments, Inc. Linear potentiometer with a floating pin joint

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