US 1272509 A
Description (OCR text may contain errors)
H. R. PALMEIL LAMP.
APPLICATION FILED FEB. 8. i917.
1,272,509. Patented July 16, 1918.'A
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H. R. PALMER.
APPLICATION FILED FEB. 9| i917.
1,272,509. Patented Ju1y16,1918.
iff-f jizz/'5222271' /7ererf A); Pa/mer Cleveland, in the A,county HEBET B. PALMER, 0F CLEVELAND, OHIO.
Specication'of Letters Patent. .-Patnted .I1-lily 156, 1918.
. Application led February 8, 1917. Serial No. 147,289.
To all whom it may concern:
Be it known -that I, HERBERT R. PALMER, a citizen of the United States, residing at of Cuyahoga and State of Ohio, have invented a certain new and useful Improvement in Lamps, of which the followingiis a specification.V y
This invention relates to lamps ofthe socalled headlight'type, and it has particular reference to the construction of the front of the lamp, or tov al device adapted to be attached to -theffaceof the lamp casing to operate conjointly` with .the other elements4 the glare and inof the lamp for controllin e lamp.
creasing the eiiciency of t The improvement is applicable to' I theV headlights at Apresent in common use on autovehicles', and
mobiles, motor-cycles, motor boats, and other lamp which'lihave invented, and ,which is the-subjectof another application for Letters Avance of the vehicle,
The lamps in common use on vehicles are provided with. aparabolic reflector located backv of the light member for projecting the rays lover amore or less broad field in adand while they may be effective in lighting the way, they produce a glare which is annoying. The object, ofthe presentL invention is and effective means forN automatically obthe` glare without matee illuminating effect of the lamp, and to rays over a field where they are most desired. I am aware that a number .of patents have been granted forlamps embodying the arement of aseres of longitudinal cells in r'ont of the lamp-fordeflecting the glare,
and that therefore the broad principle .is not new.- The. present invention Yhowever coni with other elements, certain sists in the novel construction whereby longitudinal cells .are provided in fi'ont of the light member and arranged .around a core, the said core being provided with a member so constructed as to perform, in conjunction tionsthat are hereinafter fully explained. In the accompanying partfof the specification Figure 1 is-afront View of a lamp, embodyin the improvement. Fig. 2 is a section on ine 2-2 of Fig. l. Fig. 3 is a central vertical 4section of la modified core member.
' Fig. 4 is a front view of said modification.
also to an improved type of.
the rov'ision'of sini le` Vthree members 7 8 and 8 P P a a llongitudinal cells desirable funcdrawings forming a Fig. 5 is a top View of the core member, and Fig. 6 is a fragmentary `view showin the longitudinal cell construction in detai Throughout the several figures of the drawings and in the description similar chai'- acters of reference are en'iployed to designate similar parts. l
A preferred embodiment of the invention provides a device so constructed as to make itA adaptable for attachment to the ordinary lamp at present incommon use. lThis construction, as shown in the several figures of the drawings, provides a casing member 1 adapted to extend outward from the front of the lamp, being attached vto the lamp body 2 by a ring 3, said ring engaging a flange l. The casing 1 is provided with a transparent outer face 4,` and has a longitudinal tubular core 5. The annular ,space between novel construction, arrangement, and mode of assembling f the cells 6- ,forms an important factor of the invention. said cells` are preferably formed by three continuous thin sheet metal members, a tinted or corrugated member 7 interposed between two plain members 8 and 8,y see Fig. G for detail of construction. The are assembled as shown, in' a strip of predetermined length. The stri thus formed-is wound in a coil around t. e core 5 and is of Suiiicient length to entirely till. the annular space between the core and Ithe casina l1 when tightly coiled. The corrugations in t e member 7 form the v 6, and the members 8 and 8a form supports for the member 7, thereby making a firm, durable, and economical construction o'f longitudinal cells Ithe Walls of vwhich intercept and kill the glare rays indicated by a and a Fig. 2. The light rays b 'and b are projected by the refiectoi' 9 in horizontal rays c andc through the 'cells 6. The same result can be obtained by coinbining one plain member andt-he corrugated member, and when coiled 8a would be a con` tinuation of the member 8, the 'member 7 lyingfbetweenfthe coils.
The forward end of the core 5 is provided with a glass member 1() liaving'a plain interior face and a prismatic outer face 10a.- The light rays d strike the member 10 and are projected downward in" the' field d. The prismatic face 10a is preferably formed The with lsurfac -3s in a variety of angles, as shown, thereby diverting'the rays d at different angles as shown. y
lt Will be seen that by this arrangement and combination of elements the light rays d Will fall ony the roadway over an area, in front of the vehicle, extending from close proximity to said vehicle over a considerable field forward thereof, and that the light rays c and c are projected in horizontal planes, or straightl ahead indefinitely. Therefore by the improved construction the light rays vfrom the light member 1 are controlled and diverted over a field of utility most desired and Without the glare annoyance.
The modification illustrated in Figs. 3' and 4c 'lies Wholl in the light deflecting member located in t e core 5. rPhis member has the prismatic formation 10b on the outer face surrounding a central, plain or concave portion l0@ which lis adapted to receive the central rays e and project them direct as shown in Fig., 3, Whilev the function of the prismatic portion 10b is the same as that of ILOa as shown in Fig.' 2.
/Vhat I claim and desire tosecure by Letters Patent is: l. In a lamp the combination of a extending from the. front of the lamp a. tubular core member in said casing; a longitudinally corrugated member coiled around said core thereby forming a series of loncasing Laramie gitndinal cells in said casing; and a glass member in the forward end of said tubular core, the outer face of said glass memberv the core, said cells being formed' by acorru-y gated strip ofV material supported by a plain strip coiled around the core; and a glass member in the forward end of said core,` the outer face of said glass member beingprismatic and the inner face plain.
3. In a lamp the combination of a casing extending from the front of the lamp body; a series of longitudinal cells in said casing: a tubular core in said casing, the longitudinal cells surrounding said. core; and a light deiiecting member in said core, the outer face of said light delecting member having a plain central portion prisms.
4. lin a lamp the combination of a`v casing attached to the front of the lamp; a tubular core in said casing; a coil of longitudi nal cells surrounding said core; and a light deiectlng member in said core, the outer surrounded by face of said light defiecting member .having a plain central portion surrounded by prisms, and Ithe inner face being plain.
HERBERT R. PALMER.