US1801864A

US1801864A - Control for head lamps for motor cars

Info

Publication number: US1801864A
Application number: US337380A
Authority: US
Inventors: Hutchison William Ernest; Rees David Edward William
Original assignee: Individual
Current assignee: Individual
Priority date: 1928-02-11
Filing date: 1929-02-04
Publication date: 1931-04-21
Anticipated expiration: 1948-04-21

Description

April 21, 3 w. E. HUTCHISON ETAL 1,801,364

I CONTROL FOR HEAD LAMPS FOR MOTOR CARS Filed Feb. 4. 1929 INVZNTQRS.

W. E HurcH/sa/v ,5.w. Recs.

Patented Apr. 21, 1931 V i v v UITE s'r'rss erFicE WILLIAM ERNEST HUTCHISON, or cnimirr, Am) avin EDWARD WILLIAM Runs,

1 er BARRY, w Lns CONTROL FOR HEAD LJifilS FOR MOTOR CARS Application filed February 4, 1532-9, Serial No. 337,380, and in Great Britain February 11, 1928.

This invention comprises a new or imthe solenoid core 10 and positioned between proved control for headlamps for motor cars the projection 19 and gland nut or the like 11, and the like, for use more particularly for is a compression spring 20, which normally that type of headlamp in which the bulb is retains the segmental reflector and lamphold- 5 moved out of focus in order to eliminate the er in the position shown in Figure 1. 55

glare, the object of the present invention be- On the rear of. the closure member 8 is ing to provide a simple and eificient electrimounted the trip coil 21, together with the cally controlled device for the specified

purpole pieces

22, 23,the pole piece 23,has mountpose, ed therein a spring controlled ball or plunger 1 Referring to the drawings 24, so thatwhen the colenoid core is re- Figure 1, is a section of a headlamp and tractedthe top of the square rod 9 will engage control according to this invention, whilst, the springcontrolled ball 24, which exerts Figure 2, is an end view of the solenoid. thereon a slight pressure so that when the gap casing with the cover removed. 12 registers with the square hole formed in At the rear of the lamp casing 3, a flange the closure member 8, the pressure exerted by 6 4 is secured into which slides a tubular part the ball 24 will cause the solenoid core 10 to 5, in which is mounted the coil 6 of the solerock slightly and be locked in its retracted V noid. The solenoid coil 6 is mounted on a position thereby retaining the bulb 25 in bobbin 7 which at its rear is externally this position. 1

screwed, so as to screw into a closure mem- In order to withdraw the segmental reflec- 70 her 8 which is adapted to be screwed 0r tor 16, and bulb 25, into a non-glaring posiotherwise secured into the end of the tubular tion the solenoid coil 6 is energized and the extension 5 on the lamp casing a hole which solenoid core 10 is withdrawn against the acis preferably of square shape is formed in tion of the tension spring 20, when it is authe centre of said closure member 8 and protomatically retained in its retracted position vides a guide for a square rod 9 which is by reasonof the'gap 12, engaging the edge connected to the solenoid core 10 whilst the of the square hole formed in the closurememsolenoid core 10 is provided with a guide her 8 through which the square r0d9 passes. which takes the form of a gland nut or the In order to operatethe solenoid and the like 11, which is secured to the solenoid bo trip magnet suitablecontrols are provided 7 bin 7 and is positionedat the front of the in the form of press contacts or switches solenoid coil. whichare positioned adjacent to the driver in The Solen id o e 10 at l n 13 order .to control the beforedescribed operapered so as to permit of it tilting slightly ti When it is Withdrawn and the l 12 in e To return the segmental reflector 16, and registering with the Square hole formed bulb 25 to their normal position as shown In the cover V 4 1 in Figure 1 of the drawing the trip coil 21 is The Solenmd core may have smal energized the square rod 9 is drawn towards recess 13, formed on its under side so as to thb magnets 22 23 thereb 4O V g y cisengaging the g9 facilitate the rocklng of the solenoid core g p 12 from lower edge of the Square hole when the gap 12 formed in the rod 9 engages formed in the closure member 8 and permitthe square hole in the closure member 8. The .7 purpose of the rocking of the solenoid Core ting the solenoid together with the segmental 10 will be more fully explained hereafter. reflector 16 and 1 1 holder to return to Mounted on the end of the solenoid core than normal P03151011 under the e of 10 is a lampholder 14;, on which is mounted compreisslon sPrmg the segmental reflector 16, which forms part r0 provldeufor a longltudufal adJuStm91}t f th i fl t 17 Th l h ld 14 of the solenoid, the flange 4 is split and is is provided with contact members 18 to which provided with lugs 27, through which passes m 50 the usual connections are made; mounted on the bolt 28, so that by loosening the bolt 28 the iii) tubular part 5 can be slidably adjusted therein.

A casing 26 is provided which is adapted to cover the solenoid casing and the other parts of the device, said casing being secured to the headlamp casing 3.

i hat we claim is 1. A control for headlamps for motor cars comprising in combination a solenoid, a solenoid core, a bulb holder mounted on said solenoid core, an extension of said solenoid core, a trip coil mounted adjacent to said exte Si011,21 spring controlled member mounton said trip coil and adapted to engage and de ress the solenoid core extension when its retracted position, a gap formed in said s lenoio core extension, stop which is adapted to engage the gap in the solenoid core extension and retain the solenoid core in its retracted position, the energization of the trip coil lifting the solenoid core extension and permitting the solenoid core to automatically return to its normal position.

2. A headlamp for motor cars comprising in combination a casing, a reflector disposed in said casing having an aperture therein, a solenoid mounted on said casing, a core mounted in said solenoid, a bulb holder mounted on the solenoid core, a reflector adapted to close the aperture formed in the reflector mounted adjacent to the bulb holder on said solenoid core, an extension of said solenoid core, a. trip coil mounted adjacent to said extension, a spring controlled member mounted on said trip coil and adapted to enand depress the solenoid core extension when in its retracted position, a gap formed in said solenoid core extension, a stop which is adapted to engage the gap in the solenoid core extension and retain the solenoid core in its retracted position, the energization of the trip coil lifting the solenoid core extension and permitting the solenoid core to automatically return to its normal position.

In testimony whereof, we have signed our names to this specification.

WILLIAM ERNEST HUTCI-IISON.

DAVID EDVARD WILLIAM REES.