Improvements in eye-glass frames / [Rufus Bennett Fowler].

  • Fowler, Rufus Bennett.
Date:
1894
Catalogue details

Licence: Public Domain Mark

Credit: Improvements in eye-glass frames / [Rufus Bennett Fowler]. Source: Wellcome Collection.

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    Fowler's Improvements in Eye-glass Frames. where it is weakened by the screw hole from strain ; the piece N also allows the tension of the spring1 to be varied by increasing or decreasing its length. By turning the wing L to form a lip L1 1 greatly stiffen the bridge at its central section in a vertical plane and prevent its being bent so as to vary the distance of the eye-wires from each other. 5 I am aware that it is not new to attach the nose-guard spring to the central section and outer side of the bridge, but the above described features of construction of the bridge I deem to be new and I also deem it to be new to support the nose- guards entirely upon the free ends of a nose-guard spring which is so attached to the bridge. The bridge is cut from sheet metal of suitable width and thickness to 10 secure the necessary rigidity and strength, and the width of the bridge is reduced at 3, 3 by contracting the front side of the bridge leaving the line 4, 4 straight for the edge of the spring to bear against and making the line 3, 5 parallel with the line 4, 4 in order to make the arms D, I) of uniform width for a short distance from their ends and of the proper wddth to be attached to the eye-wires. 15 I am aware that a rigid bridge having offsets so as to bring the free ends of the nose-guard spring out of the plane of the eye-wires is old, and 1 do not claim such, but 1 deem it to be new to cut the bridge from sheet metal wdth the offset G, G formed in the bridge without bending and with the offsets parallel with the surface of the sheet metal. I do not confine myself to the use of eye- 20 wires, as the ends of the bridge can be attached to the lenses in what are known as frameless eye-glasses. Having now particularly described and ascertained the nature of my said invention and in wrhat manner the same is to be performed, I would have it understood that I am aware that it is not new to attach the eye-wires by a rigid 25 bridge provided with offsets and having a nose-guard spring attached to said bridge and I do not desire to claim the same, but I declare that what I claim is : First. In an eye-glass frame, the combination of a bridge made from a sheet metal blank having offsets G, G and a wing L, said wdng being bent at right 30 angles to the body of said bridge forming a lip L1, a spring E attached at its central section to said bridge and having its opposite ends free and nose-guards I, I carried by the free ends of said spring, as and for the purpose set forth. Second. In an eye-glass frame, the combination of a bridge provided wdth offsets G, G, a lip L1, a spring E attached at its central section to the outside of 35 said bridge, nose-guards carried by the free ends of said spring, a bar N lying on the top of said spring and an attaching screw F by wrhich said bridge, spring and bar are united, as and for the purpose set forth. Dated this 22nd day of August 1894. WHEATLEY & MACKENZIE, 40 40, Chancery Lane, London, W.C., Agents.