US894071A - Eyeglasses. - Google Patents

Description

No. 894,071. PATENTED JULY 21, 1908. H. SGUDDER & R. K. HOHMANN.

EYEGLASSES.

APPLICATION FILED 0GT.10, 1907.

with eon umran sTArps PATENT OFFICE.

HEWLETT SOUDDER AND RICHARD K. HOHMANN, OF SAN DIEGO, CALIFORNIA.

EYE GLASSES.

Application filed October 10, 1907.

; county of San Diego and State of California,

have invented new and useful Improvements in Eyeglasses, of which the following is a s pecification.

The invention relates to an improvement in e e 'lasses bein )articularl directed to a means for connecting the nose guard and spring to the lens post.

The ordinary method of securing these parts in position is through the medium of a screw, which owing to its necessarily delicate character has proven objectionable through its liability to become loosened in the continued use of the glasses.

The main object of the present invention, therefore, is to dispense entirely with the screw connection and construct the parts so as to provide a firm holding for the spring and guard, which may be readily applied or removed and which is but little liable to become accidentally loosened.

In the structural arrangement of the present invention the spring and guard are adapted to be passed over what may be termed a center post, the particular desirability of this feature of the construction residing in the fact that we are thereby permitted to use the ordinary spring and guard without change, the screw hole in these parts as now formed being utilized for the passage of the center post. a

The invention will be described in the following specification, reference being had particularly to the accompanying drawings, in which:

Figure 1 is a perspective view, illustrating the application of our invention to one lens post of an eyeglass. Fig. 2 is a transverse sectional view, partly in elevation, of the same. Fig. 3 is a vertical sectional view, partly in elevation, of thesame. Fig. 4 is an enlarged perspective of the clamping plate.

Referring particularly to the drawings, wherein is illustrated the preferred form of the invention, it will be noted that the lens post 1, provided with any preferred means of attachment to the lens 2 is formed at the relatively outer end with a box-like member 3, which member includes side walls 4 and a rear wall 5. A center post 6 projects from the rear wall, being preferably in alinement with the lens post proper and terminating Specification of Letters Patent.

Patented July 21, 1908.

Serial No. 396,744.

approximately in alinement with the forward edges of the side walls. For the greater portion of its length the center post is of plane cylindrical structure, being preferably of a size to fit within the usual screw hole openings 7 formed in the spring 8 and guards 9 of the eyeglass. The center post adjacent the forward or free end is circumferentially reduced to leave a shank 10-of materially less diameter than the remaining portion of the post, thus providing an annular recess 11 about the post near its forward end.

A clamp plate 12, preferably of a size to fit between the side walls 4 of the box member, is centrally and longitudinally formed with a slotted opening 13, which is of a width approximately corresponding to the diameter of the shank 10, and of a length to permit the upper edge of the plate to lie flush with the relatively upper edges of the side walls of the box member when said shank is in contact with the upper or limiting edge of the opening. The relatively lower portion of the plate 12 is approximately wedge-shaped, as shown at 14, such shape being secured by beveling the forward surface of the plate, leaving the rear surface plane throughout its length.

In use the openings 7 of one terminal of the spring and of the nose guard are passed over the center post 6, said ortions fitting snugly between the side wal s 4 of the box member. The clamp plate 12 is then applied as previously described, serving to clamp the guard and spring within the box member against accidental loosening, it being understood that the combined thicknesses of the spring and guard terminals are slightly greater than the plane or larger portion of the post 6, whereby a clamping action is secured in the application of the plate 12.

It being desirable in fastenings of this character to render the same as light as possible consistent with the desired strength and yet provide for convenient removal of the spring and guard when desired, it is of importance that the side edges of the plate 12 fit between and be held by the side walls 4 of the box member, as this construction coupledwith the notch and slot formation for securing the plate 12 against endwise movement provides an effective fastening which is not readily disconnected in any ordinary uses to which the eyeglasses may be subjected and which is yet conveniently removable without special tools when repair of the spring or guard is required.

Through the use of the fastening described we obtain a practically secure attachment for the spring and guard, in the use of which accidental loosening is prevented to a material extent as the frictional engagement of the clamping plate when in applied position will overcome any tendency to loosen under any of the usual jars to which the glasses may be subjected, it being obvious, of course, that the parts may be so constructed and arranged that considerable pressurewill be necessary to dislodge the clamping plate from operative position. Another and important feature of the present invention is that we are enabled to utilize without change the springs and guards of the present commercial eyeglasses, the screw holes in the latter serving to fit over the center posts of the present improvement.

Having thus described the invention what is claimed as new, is

1. An eyeglass including a spring, guard, and lens post, a box-like member carried thereby and open at its forward end, a center post carried by the b0Xlike member to receive the spring and guard of the eyeglass,

of a clamping plate adapted for removable engagement with said post by an endwise movement of said plate, said plate fitting within and bearing against the side Walls of the member.

2. An eyeglass including a lens post, a box-like member carried thereby and open at its forward end, a center post integral with the member and circumferentially reduced at its forward end to provide a notch therein and a clamping plate formed with a slotted opening to engage the notch for the post, the side edges of the plate fitting between and bearing against the side walls of the member.

In testimony. whereof we affix our signatures in presence of two witnesses.

HEWVLETT SGUDDER. RICHARD K. HOHMANN.

\Vitnesses:

H. A. CROGHAN, OLA KROENERT.

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