US1807393A

US1807393A - Reflecting device

Info

Publication number: US1807393A
Application number: US275485A
Authority: US
Inventors: Delmanhorst Herman Frederick
Original assignee: Louisville Frog Switch & Signa
Current assignee: Louisville Frog Switch & Signa; Louisville Frog Switch & Signal Co
Priority date: 1928-05-05
Filing date: 1928-05-05
Publication date: 1931-05-26
Anticipated expiration: 1948-05-26

Description

y 1931. H. F. DELMANHORST REFLECTING DEVICE Filed May 5, 1928 INVENTOR. Herman fiedcrieii'DeZmanhorsT,

A TTORNE Y.

Patented May 26,; 1931 V UNITED STATES.

PATENT OFFICE HERMAN FREDERICK DELMANHORST, OF LOUISVILLE, KENTUCKY, ASSIGNOB, IBY EESNE ASSIGNMENTS, TO LOUISVILLE FROG, SWITCH & SIGNAL COMPANY, 01 LOUISVILLE, KENTUCKY, A CORPORATION REFLECTING DEVICE Application filed May 5,

This invention relates to a'lens cap, holder or carrler for use in connection with reflecting devices of that type whereby incidental elements of the latter together to provide a unit, and further with the cap, holder or carrier serving as a means for securing the unit to the b]ect in which it is to be placed, that is the base of a Si or signal. A further object of t e invention is to provide, in a manner as hereinafter set forth, a' lens cap, holder or carrler for a reflectlng de-' vice in a manner whereby a reflector and a large part of the lens, forming elements of the reflecting device are enclosed.

A further object of the invention is to rovide in a manner as hereinafter set forth, a

ens cap, holder or carrier for a reflecting device in the form of a screw base which permits it to be screwed into a lamp socket or other devices of analogous character.

A further object of the invention is to provide, in a manner as hereinafter set forth, a lens cap, holder or carrier for a reflecting device having a closed inner end and with its body portion threaded permitting it to be screwed into a socket for anchoring the reflector device in position. Further objects of the invention are to provide, in a manner as hereinafter set forth, a lens cap, holder or carrier for a reflecting device and which is simple in its construction and arrangement, strong, durable, thoroughly eflicient in its use, having inherent means for anchoring the device 111 a socket, and comparatively inexpensive to manufacture. With the foregoing and other objects in view the invention consists of the novel construction, combination and arrangement of parts as hereinafter more specifically described, and illustrated in the accompanying drawings, wherein is shown an embodiment of the invention, but it is to be understood 50 that changes, variations and modifications 1928. Serial No. 275,485.

can be resorted to which fall within the scope of the claims hereunto appended.

In the drawings wherein like reference characters denote corresponding parts throughout the several views Figure 1 is an elevation of a reflecting device showing the adaptation with the lens thereof of a cap, holder or carrier therefor in accordance with this invention.

Figure 2 is a vertical sectional view of the cap, holder or carrier and further illnstrating the lens secured thereto and with the lens in elevation.

Figure 3 is a top plan view of a reflecting device having as a part thereof the lens cap, holder or carrier in accordancewith this invention.

lfigure 4 is ure 2.

The lens cap, holder or carrier is hereina section on lineal- 1 Figafter termed a holder, Thelens as illustrated is of the bi-convex type and is referred to generally at 5. The lens includes a cylindrical body portion 6 of appropriate length, an outer end 7 of convex curvature and an inner end 8 of convex curvature. The'lens 5 is of greater length than the holder.

The holder consists of a hollow body open at its outer end and closed at its inner end. The holder is generally indicated at 9 and includes a body portion formed of a threaded part 10 and a non-threaded part 11. In lengthwise section the part 10 is of materially greater length than the part 11 and the latter is offset with respect to the inner face 7 of the part 10.

As the-part 10 is threaded the portions of smallest inner diameter thereof snugly engage the body portion 6 of the lens 5. The part 11 of the body portion of the holder 9 is spaced from the body portion 6 of the lens 5.

The closed inner end of the holder 9 isindicated at 12 and is of convex curvature. The inner face of the inner end 12 of the holder 7 is provided throughout with a. reflecting medium and which may be of any character desired, but preferably the inner face of the end 12 is silvered or otherwise provided with means, as indicated at 13 to constitute a reflector.

The reflector 13 and inner end 12 conform to the contour of the inner end 8 of the lens 5. The reflector 13 is co-extensive with the inner end 8 of the reflector and said inner end 8 is engaged throughout by the reflector.

The part 11 of the body portion of the holder 9, in connection with the body por tion 6 of the lens 5 provides a pocket in which is positioned a securing and sealing medium 14 which secures the holder and lens together and also seals the threaded part 10 of the body portion of the holder 9 so as to prevent moisture or other foreign matter from getting in contact with the reflector and ultimately destroying the reflecting qualities of the latter.

The body portion 6 of the lens 5 is of greater length than the holder 9 whereby when the latter is secured to the lens 5 a part of the body portion 6 of the latter will project from the outer end of holder 9. The construction of the holder 9 permits the unit or reflecting device to be screwed into a lamp socket or other analogous devices of this kind. It enables one to take the lamps out of an electric sign and screw the reflecting unit in place.

The reflecting unit is commonly used in the construction of road indicators and other signs which at night are illuminated or rendered visible by the reflection of light coming from the lamps of motor vehicles or some other extraneous source. The unit can be arranged in any manner desired. Although the unit is designed primarily forroad indicators and other signs, yet it is to be understood that it can be employed. for forming symbols, letters, figures and also in connection with buoys or for any other purposes for which it is found applicable.

The lens employed may be of plano-convex, bi-convex or convex-concave contour.

The body portion of the holder may if desired, be threaded throughout, that is to say,

from the point of joinder of the body portion with the closed inner end of the holder to the outer open end thereof, and cemented to the body portion of the lens. The cement being of a character to constitute a seal to prevent moisture or foreign matter coming in contact with the reflector to destroy its reflecting qualities.

It is thought the many advantages of a reflecting device or unit in accordance with this invention, more particularly the lens holder forming an element thereof, can be readily understood, and although the referred embodiment of the invention is as il ustrated and described, yet it is to be understood that changes in the details of construction can be had which fall within the scope of the invention as claimed.

What I claim is:

1. In a reflecting device for removable connection to a threaded support, the combination of a holder open at its outer end and closed at its inner end, said holder having its body portionformed of a threaded part and a non-threaded part, a lens body positioned within and projecting from the open end of said holder, said non-threaded part arranged at the outer portion of the holder and spaced from the lens body, said threaded nart snugly engaging said lens body and in connection with the latter and said non-threaded part providing a pocket at the outer portion of the holder, a reflecting medium within said body portion at the closed end thereof and opposing the inner end of the lens body, and a combined lens securing and threaded part sealing means within said pocket.

2. In'a reflecting device for removable connection to a threaded support, the combination of a holder open at its outer end and closed at its inner end, said holder having its body portion formed of a threaded part and a non-threaded part, alens body positioned within and projecting from the open end of said holder, said non-threaded part arranged at the outer portion of the holder and spaced from the lens body, said threaded part snugly engaging said lens body and in connection with the latter and said non-threaded part providing a pocket at the outer portion of the holder, a reflecting medium within said body portion at the closed end thereof and opposing the inner end of the lens body, and a combined lens securing and threaded part sealing means within said pocket, the largest outer diameter of said threaded part being the same as the outer diameter of said non-threaded part.

3. In a reflecting device for removable connection to a threaded support, the combination of a holder open at its outer end and closed at its inner end, said holder having its body portion formed of a threaded part and a non-threaded part, a lens body positioned within and projecting from the open end of said holder, said non-threaded part arranged at the outer portion of the holder and spaced from the lens body, said threaded part snugly engaging said lens body and in connection with the latter and said non-threaded partproviding a pocket at the outer ortion of the holder, a reflecting medium wit in said body portion at the closed end thereof and opposing the inner end of the lens body, a combined lens securing and threaded part sealing means within said pocket, the largest outer diameter of said threaded part being the same as the outer diameter of said non-threaded part, and said threaded part having different inner diameters, said difi'erent inner diameters of said threaded part being less than the inner diameter of said non-threaded part.

4. In a reflecting device a lens receiving holder open at its outer end and closed at its inner end, said holder having its body portion formed of a threaded part and a non-threaded part, said non-threaded part arranged at the outer portion of the holder and of materially greater inner diameter than the outer diameter ofthe lens received in the holder, said threaded part of an inner diameter to snugly engage the lens received in the holder, and a reflecting medium positioned within the body portion against the inner face of the closed inner end thereof.

5. In a reflecting unit for removable connection with a threaded support, the combination of a cylindrical holder open at its outer end and closed at its inner end, said holder having its body portion formed of a threaded part and a non-threaded part, said threaded part in lengthwise section being of greater length than said non-threaded part, a lens body extending into and projecting from said holder, said non-threaded part arranged at the outer portion of the holder and spaced throughout the lens body, said threaded part snugly engaging said lens body and in connection with the latter and said non-threaded part providing a pocket at the outer end of the holder, a reflecting medium within said body portion at the closed end thereof and opposing the inner end of the lens body, and a combined lens securing and threaded part sealing means within said pocket.

6. In a reflecting unit for removable connection with a threaded support, the combination of a cylindrical holder open at its outer end and closed at its inner end, said holder having its body portion formed of a threaded part and a non-threaded part, said threaded part in lengthwise section being of greater length than said non-threaded part, a lens body extending into and projecting from said holder, said non-threaded part arranged at the outer portion of the holder and spaced throughout the lens body, said thread- 45 ed part snugly engaging said ens body and in connection with the latter and said nonthreaded part providing a pocket at the outer end of the holder, a reflecting medium within said body portion at the closed end thereof 50 and opposing the inner end of the lens body, and a combined lens securing and threaded art sealing means within said pocket, the argest outer diameters of said threaded part being the same as the outer diameter of said 55 non-threaded part.

7. In a reflecting unit for removable connection with a threaded support, the combination of a cylindrical holder open at its outer end and closed at its inner end, said 60 holder having its body portion formed of a ranged at the outer portion of the holder and spaced throughout the lens body, said threaded part snugly engaging said lens body and in connection with the latter and said nonthreaded part providing a pocket at the outer end of the holder, a reflecting medium within said body portion at the closed end thereof and opposing the inner end of the lens body, a combined lens securing andthreaded part sealing means within said pocket, the largest outer diameters of said threaded part being the same as the outer diameter of said nonthreaded part, and said threaded part having diflerent inner diameters, said different inner'diameters of said threaded part being less-than the inner diameters of said nonthreaded. part.

8. In a reflectin device, a lens holder comprising a hollow flody open at its outer end and closed at its inner end, said body formed with an inner threaded part and an outer nonthreaded part, said threaded part terminating at one end in said closed inner end of said hollow body, said non-threaded part being ofl'set with respect to the 'portions of smallest inner diameters of said threaded part, said non-threaded part in lengthwise section being of materially less length than said threaded part in lengthwise section, said parts coacting to provide a support for a combined securing and sealing medium adapted to be positioned in said hollow body and further actin as a seal for said threaded part.

9. n a reflecting device, a lens holder comprising a hollow body open at its outer end and closed at. its inner end, said body formed with an inner threaded part and an outer non-threaded part, said non-threaded part offset with respect to the portions of smallest inner diameters of said threaded part and having its outer diameter corresponding to the portions of the largest diameters of said threaded part, said parts coacting to provide a support for a combined securing and sealing medium for the lens adapted to be positioned in said .body and further acting as a seal for said threaded part.

-' In testimony whereof, I aflix my signature hereto.

HERMAN FREDERICK DELMANHORST.

threaded part and a non-threaded part, said threaded part in lengthwise section being of greater length than said non-threaded part, a lens body extending into and projecting *from said holder, said non-threaded part ar-