US1170378A

US1170378A - Lamp.

Info

Publication number: US1170378A
Application number: US83535614A
Authority: US
Inventors: Richard H Welles
Original assignee: BADGER BRASS Manufacturing CO
Current assignee: BADGER BRASS Manufacturing CO
Priority date: 1914-04-30
Filing date: 1914-04-30
Publication date: 1916-02-01
Anticipated expiration: 1933-02-01

Description

R. H. WELLES.

LAMP.

APPLICATION FILED APR. 30, 1914.

1,170,378. Patented Feb. 1, 1916.

2 SHEETSSHEET i.

R. H. WELL-ES. LAM P.

AFPLICATFON FILED APRAO, I914. v I 1,170,378. Patented Feb. 1, 1.916;

2 SHEETS-SHEET 2.

UNITED TATES PATENT omen.

RICHARD H. -WELLES, OF KENOSHA, WISCONSIN, ASSIGNOR TO THE BADGER BRASS MFG. (10., F KENOSHA, WISCONSIN,- A CORPORATION OF WISCONSIN LAMP.

Specification of Letters Patent.

Patented Feb. 1, 1916.

. Application filed-April 30. 1914. Serial No. 835,356.

. To all whom it may concern:

-Kenosha. in the county of Kenosha and State of isconsin, have invented, certain new and useful Improvements -in Lamps, of which the following is a specification.

'My invention relates to improvements in lamps. and refers more particularly to electric head lamps used on automobiles an for other outdoor purposes,

The salient objects of the invention are,

to provide a construction in which the re-- flecting surface is maintained at alltimes clean and bright by providing a gas-tight 'seal which prevents the access of impureair or' vapors to the polished surface of the reflector; to providea construction of the class described in which the glazing of the lamp may be readily removed with a minimum amount of manipulation while at the same time securing a sealed gas-tight joint when thelamp is closed; to provide a construction of the class described in which the lamp door carrying the glazing is resiliently clamped against the end of the lamp body, thus taking care of mechanical inaccuracies in constructing the various parts of the lamp; to provide a construction in which a single movement of the lamp door both seals the casing and securely locks the door to the front of the lamp: to provide a construction in which a rotary movement of the lamp door results in a gradual increase in pressure upon the gas-tight seal asthe door advances into its closed position; to provide a construction in which resilient locking means are employed to prevent the accidental loosening up of the door and consequentleakage of the gas-tight seal; to provide a construction which will be simple and economical in construction, and, in general, to provide an improved lamp of the character specified.

My invention consists in matters hereinafter described and more particularly pointed out in connection with the accompanying drawings, in which Figure 1 is a front elevation of 'a head lamp embodying my construction; Fig. 2 is a side elevation of F ig; 1; Fig. 3 is a front elevation of the lamp shown in Fig. l, the glazing door being removed; Fig. 4 is an elevation of the door removed from the lamp shown in Fig. land looking through the glazing from the inside; Fig. 5 is a fragmentary section taken along the. line 5-5 of Fig. 1; Fig. 6 is a. view similar to Fig. 5 but taken at a different point in the circumference of the lamp so as toshow the looking means; Fig. 7 is a partial fragmentary section taken along the lines 77 of Figs. 3 and 6: Fig. 8 isa fragmentary elevation of a portion of Fig. 1 showing certain'parts broken away in order to bring out the mechanical construction of the locking .devices Fig. 9 is a section taken along the line 9-9 of Fig. 8, and Fig. 10 is a section through the-lockingbutton taken along the line 10l0 of Fig. 8.

In a preferred embodiment of my eonstruction, illustrated in the drawings, the lamp shown is an automobile head lamp comprising an outer casing 1, an inner reflector 2. the front end of which is inclosed by a glazing 3-supported in an annular removable door or frame at. The electric lamp 5 is seated in the focus of the reflector and projecting flange 8 formed integral with the reflector portion 2,- and between these two flanges is interposed a sealing gasket 9 which is thus clamped between the two flanges by a plurality of boltsdistributed along the circumference. These bolts comprise fillister head screws 10' which are threaded into nuts 11 soldered .to.the under side of the inwardly projectingiflange 7. The removable door at consists of a ring the cross-section of which forms part of'a.

circle, and brazed or solderedto this ring is an annular part tion member 12. The 111- ner portion of" the circular ring 4P1'0JBCtS beyond the inner cylindrical portion 12 of the member 12, and there is thus formed an annular pocket, triangular in cross-section,

in which is seated the gasket 13. This gas ket 13 may be a rope cotton or other suitable material of a sutlicient diameter to form a seal and cushion for the glazing 3 which is clamped against it by means of a plurality of inwardly projecting clamps 14, these clamps being screwed to the member 12 by means of apluralit of fillister head screws 15 which are threa ed into nuts 16 soldered to the inside of the member 12. The member 12 is suitably die-formed so as to provide an inwardly turned flange 17 which is of the proper diameter to engage the edge of the gasket J, previously referred to.

I will now described the means for resiliently clamping the door to the body of the lamp. Distributed around the circumference. of the door and body are a plurality of clamping devices, in this case four. each of which comprises a am hook 18-which is riveted and soldered to the cylindrical portioir 12* of the part 1'2 of the door, and projects through slots 19 punched in the flanges of the reflector and of the outer casing. The cam h'ookslS are constructed of comparatively heavy metal and are notched out at their inner ends to form cam surfaces 20 suitably located to engage the plate springs 21. The plate springs 21 are also slotted out in order to admit the ends of the locking hooks and are riveted and soldered at one of their ends to the under side of the flange 9 of the outer casing, the other end of the spring being left free so as to furnish the required resiliency.

In order to clamp the door to the casing, the hooks are inserted into the slots by an axial inward movement of the door, and then, after the door has become properly seated in the body, the door is given a slight rotary movement in the direction of the arrow 22, shown in Fig. 7. At the commencement of this rotary movement the point 23 of each of the hooks slides below the end 2% of the slot in the freeend of the spring which thus moves axially outward as the hook is rotated, and so resiliently presses the door and casing together. It will be noticed that the clamping together of the door and the casing compresses the gasket 9 between the flange 7 and the annular flange 17 on the inner face of the door and thus seals the lamp against the admission of impure air or noxious vapors.

In order to prevent the loosening up of the door, due to the vibration of the car, I employ a-subsidiary locking device. This comprises a spring-pressed plunger 25 which is so placed in the circumference of the door that it will occupy a position behind the fillister head of one of the screws 10 and thus prevent a backward rotary movement-of the door. The plunger 25 is mounted to slide in a tubular sleeve 26 radially seated in tllu annular door, and the outer end of the plunger 27 1s reduced in diameter so as to glve room for the coil compression spring 28 interposed I between the outer closed end of the tubular sleeve 26 and the shoulder of the plunger. The reduced portion 27 of the plunger extends outwardly through the bushing 29 at the outer end of the sleeve 26, and is furnished with an ornamental head 30 screwed and riveted thereto. The inner end of the head 30 is slotted out across its diameter so astoadmit an outwardly projecting rectangular portion 31 formed on'the end of the building 29 by milling ofi its two sides.

The operation of the locking devicev is obvious. In the position shown, the lamp is locked against rotary movement of the door. If the lamp is to be opened, the plunger is withdrawn outwardly a suflicieut distance until the inner face of the button 30 passes beyond the end of the portion 3]., and then the button is given a-slight rotary movement to retain the plunger in unlocked position. The end of the plunger is thus drawn out of range of the head ofthe nut 10 and the door can be rotated and removed.

It is understood that my construction is capable of such modifications as would be apparent to a mechanic skilled in the art, without departing. from the spirit of the invention, and, therefore, I do not wish tobe limited to the details described exceptas specified in the appended claims.

I claim v 1. In a lamp, the combination of a substantially bowl-shaped casing, a parabolic reflector nested within said casing, said reflector and casing being provided with an annular member connecting them rigidly to gether, a door provided with a glazing closing the front end of the lamp body, a gasket interposed betweensaid door and said annular connection, and means for forcing said door toward said annular connection.

2. In a lamp, the combination of an outer shell provided with an inwardly projecting flange, an inner reflector shell provided with-an outwardly projecting flange lapping the flange on the outer shell, an annular gasket supported in contact with the outer face of one of said flanges, an annular glazing door having a glazing for closing the front end of the reflector and provided with an annular surface adapted to engage the outer annular surface of said gasket, and. resilient means for clampiiig said door to the lamp.

' 3. In a lamp, the combination of an outer shell provided with an inwardly projecting flange, an inner reflector shell provided with an out 'ardly projecting flange overlappingthe flange .on the outer shell, an annular gasket interposed between said flanges and extending beyond said inner flange. an annular glazing door having a glazing for closing the front end of the reflector and provided with a flange adapted to engage the projecting surface of said gasket. and resilient means for clamping said door to the lamp.

- 4. In a lamp. the combination of an outer shell provided with an inwardly projecting flange. an inner reflectorshell provided with an outwardly projecting flange overlapping the flange on the outer .shell, an annular Tnula'r door having. a glazing for closing the,

gasket interposed between said flanges andv projecting from between said flanges, an an- -front endof the reflector and provided with an annular seat adapted to engage the projecting surface of said gasket, and means for pressing the door against said gasket;

5'. In a lamp; the combination of anouter shell, a parabolic reflector nestedwithin said outer shell'and provided with an outwardly extending flange connecting it to said outer shell, said flange being provided with a'circumferentially, extending slot,- a spring on. 4 4 the inside of said flange and a hook carried 7 by .the door adapted to' enter a said slot and engage saidspring and provided with a circumferentially "sloping" cam surface adapted to,:.compress said spring by a "re.-

tary movement of saidjdoor,

6. In a lamp, the combination of a body portion having an annular gasket seat, a door havmg an annular seat adapted to com-l press a gasket between said door and body,

sai'd door being. adapted to clamp into on.- gagement with said body by a Ieircnmferential movement thereof, and a springpressed plunger carried by one of 'said'mem bers" and adapted to engage a projection on the other of said members I RICHARD H. .WELLEs'.

Witnesses: i I J. W. SCHMITT,

HENRY E. Hnnzoe.