US2305718A - Machine for facilitating the connecting of temples with lenses - Google Patents

Description

2,305,718 MACHINE FOR FACILITATING THE CONNECTINGdF TEMPLES WITH LENSES Dec. 22, 1942. c s; LAN'MAN Filed April 15. 1940 Fig.1.

(Ittorneg 5 Patented Dec. 22, 1942 MACHINE FOR FACILITATING THE CON- NECTING 0F TEMPLES WITH LENSES Charles SQLa-nman, Columbus, Ohio Application April 15, 1940, Serial No. 329,300

3 Claims.

This invention relates more particularly to means or mechanism for use in rapidly, effectively and economically securing the bridge and/or temples of eye glasses to the lenses. The invention is especially useful where the lenses are of the rimless variety and are perforated to receive the bridge and temple connecting members. The temples and bridges and perforated lenses are commonly supplied by manufacturers to Wholesaling. opticians and such opti-cians assemble the parts with the aid of ordinary hand tools and .as a consequence there is much inaccuracy in the work and breakage and loss of glass and parts.

The principal object of the present invention is to'provlde the assembling optician with a machine or means whereby the work referred to is not only greatly improved, facilitated and expedited. but the loss referred to greatly reduced.

Other objects will appear from the disclosure.

The invention is embodied in the example herein shown and described thefeatures-ofnovelty being pointed out in the claims.

In the accompanying drawing- Figure l is a view of the machine in side elevation with a portion'of the left hand housing broken out to show some interior details.

Fig. 2 is a combined top plan and horizontal section, the section being on the line II-II Fig. 1 looking down.

Fig. 3 is a detail sectional view taken on a vertical plane indicated by the line III-III Fig. 2 looking toward the right.

Fig. 4 is a sectional detail view illustrating conventional form of means for connecting an eye glass temple with a lens.

In the views, 5 designates a base on which the parts of the machine are mounted. 6 designates a housing secured on one end of the base. said housing containing a small conventional electric motor provided with a usual plug-in member I for supplying the operating electrical circuit to the motor. A switch 8 is provided on the base for controlling the opening and closing of the motor operating circuit.

One end of the rotatable shaft 40 of the motor is provided with a frusto-conical friction clutch ll, preferably of leather, suitably secured to the shaft so as to be rotated with the shaft when the latter is driven.

On the opposite end of the base 5 is secured a second housing I2 in which is mounted a tool holding shaft l3 extending horizontally and at right angles to the axis of the power driven its opposite end portions in a fixed bushing 14 and in a slidable bushing l5. Near the middle of the said shaft I3 is secured by set screw a spool shaped clutch member It the innersides I of the rims of which constitute friction clutch members normally straddling but which in intermediate or neutral position are slightly spaced from the frusto-conical clutch H. The slidin bushing or sleeve I5 is confined on the tool shaft between said spool-shaped friction member and a collar l1 secured by a set screw on the adjacent projecting end of the tool shaft so that by suitably shiftingsaid slidable sleeve with suitable pressure the spool can be brought into frictional engagement at either side of the frusto conical friction member to rotate the tool shaft in the direction desired.

A tool for the desired work is shown at 18; it

being removably fixed by a set screw on a suitable chuck l9 at the working end of the shaft I 3. Said tool commonly has a broach or pyramidal reaming end and a threaded shank portion to fit in and enter the threaded side of the lens engaging strap (see Fig. 4) to clean up the said e thread.

The means for shifting the slidable sleeve and the tool holder and its tool includes a handle 20 having a shaft 2| journaled to rock in the housing, said shaft having secured thereto a finger 22, the free end of which engages a notch in the lower side of the slidable bushing l5 as shown in Figs. 1 and 3. A fibre washer is shown at each end of the said slidable bushing 15.

In connecting the strap of a temple or nose piece it is usually found that the prepared holes in the metal parts and the glass are not perfect- 1y alined. It is therefore necessary to retap the assembled parts before the fastening screw can be properly inserted. It has been the universal custom in the art to use a tool mounted in a' small holder and held in the hand to carefully do the retapping. With my machine th operation is as follows: The parts to be treated are held in the hand of the workman and are pressed onto the tool of the machine. This longitudinal pressure engages the tool driving members thereby causes the tapping and reaming of the preformed holes of the metal parts. In this operation it sometimes happens that the tool becomes wedged in the holes by reason of unalinement of such holes and in such cases rotation of the tool is stopped and without my invention the glass of the lens is frequently broken. In my machine the operation, in such event, is this: The parts shaft. Said tool holding shaft is journaled at 55 being treated are Withdrawn slightly and the roor irregularities of the openings in both the lens and the metal of the strap of the temple so that the screw securing said strap to the lens can be easily and properly applied.

As the rotary motion of the tool is quite rapid with the electric motor, it is important that the heads of the spool shaped member be madethin and of light weight to reduce momentum due to,

prolonged rotations of the tool holder and tool pending the change from working'position' to,

withdrawing operation of the tool. Usually it is not necessary to employ the handle 20 in operat Y on said tool shaft between said stop and the said motion reversing means and a manually controlled means eng-aging said bushing to shift said motion reversing element.

2. A machine for use in reformingthe preformed holes in the lenses and metal parts of rimless eye glasses for perfecting the connection of the temples and frames and while such a glass and said metal parts are held in a hand of the workman, said machine including a suitable support having journaled thereon a power shaft, a substantially horizontally positioned rotatable shaft having secured on one end thereof a combined reaming andthread-tapping tool, and a stop on its other end, amotion reversing means on said power and tool holding shafts whereby the direction of rotation of said tool holding shaft and j the tool thereon can be reversed by longitudinal ing the tool because the axial pressureof the work against the tool in eitherrdirection is sum-- cient to set it in motion vfor the operation but said handle is useful if the tool sticks or takes too big a bite.

feature.

The forms of the parts can be changed-with out departing from the gist. of the invention as claimed.

What I claim is:

1; A machinefor use in reforming the preformed holes in the lenses and metal parts of rimlesseye glasses for perfecting theconnection of the temples and frames and While such a glass and said, metal parts are held in a hand of the workman, said machine including asuitable support having journaled thereon a power, shaft, a substantially horizontally positioned rotatable shaft having secured on one end thereof a com,-

bined reaming and thread-tapping tool, and ;a stop on its other end, a motion reversing means on said power and tool holding shaf-tswhereby the direction, of rotation of said tool holding shaft,

and the tool thereon can be reversed by longitudinal movement of; said tool holding shaft, said means including a bushing longitudinallyslidable- Such manual control vof the rotation of the tool is a valuable and time-saving,

movement of said tool holding shaft, said means including a bushing longitudinally slidable on said tool holding shaft between saidstop and the said motion reversing means, a, fibre Washer on said shaft adjacent each end of said bushing, and

amanually controlled means engaging saidbushing to shift said motion reversing element.

3. A machine for use in reforming the preformed holes in the lens and metal par-ts of a rimless eye glass for perfecting the connection of said metal partscwith the lens and while such,

a lens and said metal parts are held in the hand of the workman, said machine including a suitable support having journaled thereon a vpower shaft, a substantially horizontally positioned rotatable shaft driven by said power shaft and have ing secured on one end thereof a combined reaming and thread-tapping tool, motion reversing means on said power and tool holding shafts whereby the =direction of rotationof said tool holding shaft and the, tool therein can be reversed by longitudinal movement of said tool holding shaft by manual pressure on the article treated, and manually controllable meansjfor longi tudinally shifting said tool holding shaft independently of the pressure of the hand on the article treated.

CHARLES S. LANMAN,

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