US2074084A - Ophthalmic mounting - Google Patents

Description

" Ma ch 16, 1937.

G. A. ELLESTAD 2,074,084

OPHTHALMIC MOUNTING Filed Feb 1, 1955 ll l6 VI 7 FIGZ /l l2 l8 20 IO ll I6 272 29 25 FIGS IE. 34 27 I6 3| i k 2-8 as 2 3O mvl srq Patented Mar. 16, 1937 OPHTHALNHC MOUNTING Gerhard A. Ellestad, Rochester, N. Y., assignor to .Bau'sch & Lomb Optical Company, Rochester, N. Y., a corporation of New York Application February 1, 1935', Serial No. 4.532 1 7 Claims. (ores-47) This invention relates toophthalmic mountings and more particularly it has reference to connecting means which are used for securing together the various parts of an ophthalmic mounting.

One object of my invention is to provide an improved connecting means for ophthalmic mounting parts. Another object is to provide locking means .for detachable retaining elements on ophthalmic mountings. A further object is to provide a movable member which may be selectively moved .into or out of locking engagement with the screw on an ophthalmic mounting. A still further object is to provide an article of the type described which willbe simplein structure, neat in appearanceand efiicient in operation. Stillanother object .is to provide improved means for detachably securing a lensin an ophthalmic mounting. These and other objects and advantages reside in certain novel features of construction, arrangement and combination of parts as will hereinafter be more fully described and pointed out in the appended claims.

Referring to the drawing:

Fig. 1 is a front view of an ophthalmic mounting embodying my invention.

Fig. 2 is a sectional view thereof showing a tool adapted to move the locking member.

7 Fig. 3 is a similar view of amodification.

Fig. 4 is a view of the inner face of the rear strap of same with parts in section. I

A preferred embodiment of my invention is illustrated in the drawing, as applied to a lens mounting, wherein I9 indicates a member having the spaced front and rear straps II and I2, respectively, positioned on opposite faces of the lens I3. The member I0, having the usual shoe I4 extending along the edge of the lens, is soldered to the bridge member I5. The screw I6,

v passing through the opening H in the lens I3,

threadedly engages the rear strap I2 and thus connects the front and rear straps. The inner face of the rear strap I2 is provided with a recess I8 in which is movably mounted a fiat resilient member I9 having an opening 29 through which the screw I6 passes. One end of the resilient member I9 is secured to the strap I2 by means of the screw 2| so that the member I9 normally occupies the full line position shown in Fig. 2. With the screw I6 in place, one edge of the opening 20 of member I9 will normally be in contact with the screw at 22 so as to lock the latter against rotation. In order to move the member l9 out of locking engagement with the screw, the member I9 is moved down to the dotted line position of Fig. 2 by means of a'pin 23 whichis inserted through hole 24 in strap I2. Inthis "position of the locking member I9, screw I6 passesfreely through the opening 20 so that the-screw may be readily withdrawn or inserted 5' in the usual manner. It will thus be apparent that the resilient member I9 provides means for locking the screw I6 against rotation but that the member I9 may be selectively moved out of engagement with the screw in order to permit a '10 free insertion or withdrawal of the screw.

In the modification shown in Figs. 3 and 4 the rear strap I2 has formed on its inner face the recess 25. Slidably mounted within the recess 25 is the locking member 26 which is retained loose- 15 ly by a screw 21 cooperating with a slot 28 to permit; free sliding movement of the member 26. The member 26 is provided with an opening 29 through which passes the screw I6. The opening 29 has a tapered portion 39 which is adapted 20 to be forced into wedging engagement with screw I6 by sliding the member 26 by means of a pin 23 which passes through the aperture 3| and engages the upturned part 32 on member 26. In this position, the member 26 serves as a lock to 5 prevent rotation of the screw I6. The member 26 may be moved out of locking engagement with the screw I6 by inserting the pin 23 through aperture 33 so as to engage the upturned part 34 on member 26. 30

From the foregoing it will be apparent that I am able to attain the objects of my invention and provide relatively simple, yet efiicient, connecting means for ophthalmic mountings. A mounting embodying my invention is neat in 35 appearance as the movable locking members are concealed. Although I have illustrated my invention as applied to means for mounting lenses it is obvious that it may be equally well adapted for locking screws which are used for other pur- 40 poses on ophthalmic mountings. Various modifications may be made without departing from the spirit of my invention.

I claim:

1. An ophthalmic mounting comprising a part, 45 a retaining element detachably secured to said part for holding together a plurality of ophthalmic mounting devices, a member having one end fixedly mounted on said part, said member having a movable part provided with an aperture 50 through which said element extends, said member being resilient and constructed so that the wall of said aperture is normally urged into locking engagement with said element.

2. In an ophthalmic mounting, the combina- 55 tion of a strap positioned on the face of a lens having an opening, a retaining element positioned in said opening and secured directly to said strap, a locking member movably mounted on said strap, said member having a hole within which said element is positioned, and coacting locking means on said element and on the wall of said hole, said member being adapted to be selectively moved to bring the locking means on the wall of the hole into or out of locking engagement with the locking means on the element.

3. In an ophthalmic mounting, the combination of a strap positioned on the surface of a lens having an opening, a retaining element positioned in said opening and secured directly to the strap, said strap having an internal recess formed on its inner face, a locking member movably mounted within said recess, coacting locking means on said element and said member, said member being constructed and arranged to be selectively moved into or out of locking engagement with said element, said strap having an aperture in the wall of said recess whereby said member may be moved by means of a tool inserted through the aperture.

4. An ophthalmic mounting comprising a part having two spaced straps positioned on opposite faces of a lens having an opening, a screw conmeeting said straps and positioned in said opening, one of said straps having a recess formed on its inner face, a member slidably mounted within said recess to move in a plane substantially perpendicular to the axis of the screw, said member having a slot through which said screw extends, and means permitting selective movement of said member, into or out of locking engagement with said screw.

5. An ophthalmic mounting comprising a strap adapted to be positioned on the surface of a lens having an opening, a screw passing through said having a strap adapted to be positioned on the surface of a lens having an opening, the inner side of said strap having a depression facing the surface of the lens, a locking member movably mounted within said depression, said member having an aperture, a retaining element passing through said aperture and positioned in said opening and secured directly to said strap, said member being constructed and. arranged to be selectively moved into or out of locking engagement with said element, the movement of said member being confined entirely, to said depression, said strap having a relatively small aperture leading into said depression whereby a tool may be inserted in said depression for moving said member.

7. An ophthalmic mounting comprising a part having a strap adapted to be positioned on the surface of a lens having an opening, the inner side of said strap having a recess, a retaining element passing through said opening and recess and secured to the strap, a resilient member having one end secured to the strap and the free end movable within said recess, said member having a part normally urged into'locking engagement with said element by the resilience of said member. I

GERHARD A. ELLESTAD.

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