.
Year: 1888

page_text: Date of Application, 26th June, 1888
Specification Accepted, 24th Aug., 1888
Grasses.
We, FREDERICK ALBERT HENNINGER, Watchmaker, and JOHN THILO FYFER,
Merchant, both of Columbia, in the County of Boone and State of Missouri, one of
the United States of America, do hereby declare the nature of this invention and in
what manner the same is to be performed, to be particularly described and ascertained
in and by the following statement:—
Our invention relates to devices for more readily and perfectly securing the lenses
in their frames or rims.
The object of the invention is to provide a simple and cheap means for properly
securing different sizes of glasses in their rims or frames, so that they shall fit perfectly
without the usual laborious and tedious process of grinding.
The invention consists of certain details of construction fully described in the speci-
fication and clearly pointed out in the claims.
Referring to the accompanying drawings which illustrate our invention :-
Figure 1, is an elevation showing the application of our invention, to both rims or
lens frames, of a pair of spectacles.
Figure 2, is an elevation showing our invention applied to one lens frame or rim, of
a pair of eye-glasses.
Figure 3, shows the frame or rim for an eye-glass with the clamping parts
separated.
Figure 4, shows a slight modification in the application of our invention.
Figure 5, shows the clamping pieces separated from the frame and adapted to be
brazed or soldered upon the contiguous ends of a frame at one point only.
Figure 6, is a view of the small nut used for holding the pieces of the frame in
clamped or closed position.
Figure 7, shows a modification in the manner of applying the nut and clamping
screw.
Similar letters refer to similar parts throughout the several views.

page_text: A, B, are the lenses of a pair of spectacles or eye-glasses.
(, is a frame or rim which embraces and holds the usual lens.
D, denotes the usual split side pieces to which the temple is binged.
a, denotes the slotted end of the frame; b, is the opposite end of the frame which
is a little snaller than a, and slides in a concavity formed by the bent down edges f
of the slotted piece, a. d, is the slot through which the screw end, c, of the opposite
part,, is inserted. e, is the nut for screwing upon the part, c.
in the top of the nut.
g, is a slot or nick
It is well known that almost all glasses require much grinding before they will fit
the usual frame, and be so perfectly embraced by it that there are no open spaces
between said rim or frame and lens.
The ordinary lens frame is made open at the hinge joint to which the temple is
attached and this allows a slight opening of the frame only, for the purpose of
crowding in a large glass. In this case however, the small open space left between
these two parts of the frame to which the temple is hinged, is unsightly and catches
dirt. Further than this, the adjustment permitted in this way is very slight.
The purpose of our invention is to avoid the above mentioned difficulty and to
perfectly retain in the same frame, lenses varying considerably in size, thus avoiding
the tedious process of grinding the lens to fit the frame.
The device which we have invented for accomplishing our purpose may be applied
alike to spectacles and eye-glasses either with or without the usual meeting ends of
the frame to which the temple is jointed.
Our invention however, renders these meeting ends of the frame for the joint
entirely unnecessary, as the frame need only open in a single place, namely, the one
at which our clamping device is attached, and which may be at any desired part of
the rim.
At the severed ends of the rim wo make as it were, a sort of clamp joint. Upon
one side we form a rectangular slot of considerable length, and roughen or barb the
surface on both sides of said slot in order that the nut, e, which goes over the screw, c, may
hold more firmly when screwed snugly on. The sides of the frame for quite a distance
from the end we bend inward as at, so that they may embrace and firmly hold
the opposite or tenon end of the frame which is made small enough to slide therein.
Just at the end of the tenon or small piece, b, we either make a perforation into which
we insert a screw post, r, or we turn up the end of, b, by itself, and cut a screw
thread thereon. In the former case we insert the post through the slot, d, after the
part, b, is in place in the opposite part. In the latter case, where the post is an
integral part of, b, we fit the parts so that the tenon part may be sprung in between
the portions, and the post, e, into the slot, d. These two clamping portions as
above described may be integral with the rim or frame, C, or they may be made
separately as seen in figure 4, and soldered to the separate ends of the frame,
dispensing in all cases with the usual double pieces where the temple is hinged.
This latter piece may be made single and so made it gives great strength and
permanence to the entire frame, and if desired the temple piece may be constructed
separately to increase the range of adjustability of the frame as shown in figure 4.
The ends of the frame to form the clamping device may be stamped or otherwise
formed into the required shape.
In operating our dovice we first take off the screw nut, e, with a small Screw-
driver fitted to straddle it and rost in the nick, y. We now slide the part, b, outward
until its post, c, reaches the extreme end of slot, d. The lens is now inserted and the
frame pressed closely around it and held there tightly. The nut, e, is then replaced
and screwed solidly down upon the roughened upper surface of the frame, thus
retaining the lens firmly and holding every part of the frame close to its edge.
We are aware that devices for telescoping the sides of the frame have been used
about the usual meeting end of the frame where the temple is joined. We wish to
avoid the use of this usual double piece and to give a much greater adjustment than
can thus he given, and without disfiguring the frame. With our device, an adjust-
ment of an inch if required, can be readily made. This device may be applied to

page_text: steel, rubber, gold or silver frames of glasses and it may also be used for retaining
large single lenses called reading glasses in their frames.
Figure 7, shows the screw post shouldered and made separate from the frame
and passing through the slot, into a threaded eye or perforation in the tenon end,
an obvious modification of the construction described.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is :-
1st. In a spectacle or eye-glass, means for adjusting the frame to suit different
sizes of glasses, consisting in a lengthened slot in one end of a severed frame and
a tenon on the opposite end carrying a screw-post at right angles to the line of
the rim, and a nut for said post to hold the ends of the frame firmly at different
points, substantially as described.
2nd. The combination of the slotted portion, a, and tenon portion, b, when made
separate from and attached to the respective severed ends of a lens rim, combined
with the securing nut and post, substantially as herein described.
3rd. The combination with the slotted end, a, of a lens frame, of the screw-threaded
post formed integral with the part, b, and the nut, c, substantially as herein described.
Dated this 26th day of June 1888
FREDERICK ALBERT HENNINGER.
JOHN THILO FYFER.
By Jensen & Son,
77, Chancery Lane, London, W.C.,
Patent Agents.