Head supported binocular instrument with replaceable lenses worn as glasses

Claim 2

In an optical instrument of the binocular type, compRising, a lens casing having a bottom, top, two side walls and one rear wall, the bottom and rear walls having aligned recessed portions for receiving the nose of the wearer; said rear wall having eye apertures positioned to each side of the recessed nose portion; rear lens receiving frames in the casing adjacent said rear wall for each eye of the wearer and means mounting and controlling said rear lens receiving frames for interpupillar spacing; front lens receiving frames in the casing for each eye of the wearer; means mounting said front lens receiving frames for telescopic movement to and from the rear lens frames; and said telescopic front lens mounting means having means for controlling the interpupillar spacing of the front lens frames; said interpupillar spacing means and said telescopic mounting means providing maintenance of a selected parallel interpupillar setting of said rear and front lens receiving frames; said means mounting said front lens receiving frames for telescopic movement being a framework having eye apertures therethrough in line with said front lens receiving frames; said framework having guide means mounting it in said casing for telescopic movement and control means extending to the outside of said casing for telescopically moving said framework; said front lens receiving frames being a pair of separate members transversely slidably mounted on said framework; said means for controlling the interpupillar spacing of the front lens frames includes a gear rack facing each other on each of said front lens frame separate members, a common pinion between and meshing with said gear racks and a shaft on said pinion and extending at one end in a bearing recess in said framework and the other end extending through a longitudinally extending slot in said casing and having a control knob thereon above said top for rotating the pinion.

Claim 3

An optical instrument according to claim 1 wherein said lens casing comprises two parts consisting of a lower integral half and an upper integral half and having means separably securing the two halves together.

Claim 4

An optical instrument according to claim 1 wherein said lens casing comprises two parts consisting of a lower integral half and an upper integral half and having means separably securing the two halves together.

Claim 5

In an optical instrument of the binocular type, comprising, a lens casing having a bottom, top, two sidewalls and one rear wall, the bottom and rear walls having aligned recessed portions for receiving the nose of the wearer; said rear wall having eye apertures positioned to each side of the recessed nose portion; rear lens receiving frames in the casing adjacent said rear wall for each eye of the wearer and means mounting and controlling said rear lens receiving frames for interpupillar spacing; front lens receiving frames in the casing for each eye of the wearer; means mounting said front lens receiving frames for telescopic movement to and from the rear lens frames; and said telescopic front lens mounting means having means for controlling the interpupillar spacing of the front lens frames; said interpupillar spacing means and said telescopic mounting means providing maintenance of a selected parallel interpupillar setting of said rear and front lens receiving frames; said means mounting and controlling said rear lens receiving frames being a pair of separate members, each member having a vertically extending portion having a guide means at its bottom end cooperating with guide means in the casing bottom for transverse movement, an arcuate upper and generally semicylindrical downwardly opening portion extending from the vertical portion and having arcuate groove means therein for frictionally receiving at least one removable lens, said arcuate portion having at its upper portion a transversely extending portion having rack teeth therein, each of said members having the rack teeth oppositely disposed; said bottom of the casing having a top portion on said nose receiving recessed portion with transverse guideways therein for slidably receiving said upper transverse portions on said lens receiving separate membErs at a position adjacent the top of the casing, said means controlling said lens receiving frames including a pinion shaft and pinion thereon mounted between said rack teeth, said pinion shaft lower end received in a bearing recess in the top portion of the nose receiving recess portion and an upper portion extending through an aperture in the casing top; and a control knob on the top of said pinion shaft for rotating said pinion.

Claim 6

In an optical instrument of the binocular type, comprising, a lens casing having a bottom, top, two sidewalls and one rear wall, the bottom and rear walls having aligned recessed portions for receiving the nose of the wearer; said rear wall having eye apertures positioned to each side of the recessed nose portion; rear lens receiving frames in the casing adjacent said rear wall for each eye of the wearer and means mounting and controlling said rear lens receiving frames for interpupillar spacing; front lens receiving frames in the casing for each eye of the wearer; means mounting said front lens receiving frames for telescopic movement to and from the rear lens frames; and said telescopic front lens mounting means having means for controlling the interpupillar spacing of the front lens frames; said interpupillar spacing means and said telescopic mounting means providing maintenance of a selected parallel interpupillar setting of said rear and front lens receiving frames; said means mounting and controlling said rear lens receiving frames being a pair of separate members, each member having a vertically extending portion having a guide means at its bottom end cooperating with guide means in the casing bottom for transverse movement, an arcuate upper and generally semicylindrical downwardly opening portion extending from the vertical portion and having arcuate groove means therein for frictionally receiving at least one removable lens, said arcuate portion having at its upper portion a transversely extending portion having rack teeth therein, each of said members having the rack teeth oppositely disposed; said bottom of the casing having a top portion on said nose receiving recessed portion with transverse guideways therein for slidably receiving said upper transverse portions on said lens receiving separate membErs at a position adjacent the top of the casing, said means controlling said lens receiving frames including a pinion shaft and pinion thereon mounted between said rack teeth, said pinion shaft lower end received in a bearing recess in the top portion of the nose receiving recess portion and an upper portion extending through an aperture in the casing top; and a control knob on the top of said pinion shaft for rotating said pinion.

Claim 7

An optical instrument according to claim 3 wherein said means mounting the front lens receiving frames is a telescopically mounted framework in said casing; said casing having a longitudinal guide means in its bottom; said framework having longitudinal guide means for telescopic sliding movement by said guide means in the casing bottom, eye apertures therethrough in line with said front lens receiving frames; said framework having control means thereon cooperating with control means extending to the exterior of the casing for telescopically adjusting the position of the framework with respect to said rear lens receiving frames; said framework having transversely extending guideways in its upper portion; each of said front lens receiving frames having depending arcuate portions opening downwardly and having groove means therein for removably receiving and frictionally holding therein at least one lens and a transversely inward extending portion having rack teeth therein opposing the rack teeth in the adjacent lens receiving frame and guidingly received for sliding movement in said guideways in the top of said framework; a pinion positioned between said last mentioned rack teeth portions and having a support shaft mounted in a bearing recess in said framework and an upper shaft portion extending up through a longitudinally extending slot in said casing top; and a control knob on said shaft above said casing top for rotating the pinion to adjust the interpupillary spacing of said front lens receiving frames.

Claim 8

An optical instrument according to claim 4 wherein said top of the casing has a rear arcuate edge to receive the forehead of the wearer, the sides extend rearwardly beyond the rear wall to the extent of the adjacent rear edge of the arcuate top and temples extend rearward from the rear of the sides.