US1515678A - Ophthalmic mounting - Google Patents

Description

J. H. HEALEY OPHTHALMIC MOUNTING Filed March so 1923 WEI INVENTOR J. H. HEALEY ATRNEYS Patented Nov. l8,

JOSET-H HENRY rrnannr, Elli VANCOUTIER, Bl

'11' GOLUI i-IBIA, CANADA, ASSIGNOB T AMERICAN OPTICAL COIi'IlPIaNY, SOUTHBRLBGE, MASSACHUSETTS, A VOLUN- TARY ASSOCIA'IION OF IiTASSACHUSETTS.

OPHTHALMIC IMO'UNTING.

Application filed. March 30,

To all /20 222 it may concern.

Be it known that l, Josnrrr HENRY Him-- Liar, a citizen of Canada residing at Van couver, in the Province of British Columbia and Dominion of Canada, have invented certain new and useful Improvements in Qphthalmic hiiounting 's, of which the following is a specification.

This invention relates to improvements in opthalmic mountings and has particular relcrence to an improved construction of frame or lens holding device.

(hie ot the principal objects of the presont invention is the provision of a novel and improved method of uniting the ends of a split lens receiving member or frame.

A further object of the invention is the provision oi a construction of this character which shall particularly adapted for use in what is termed a fingerpiece mounting or mounting for pivoted spring actuated guard levers for retaining the same in position on the face and in which form 01' mounting the frame joint should be extremely inconspicuous 1n appearance.

Another object of the present invention is the provision of an improved manner of rminec ng the ends of the frame so that a single 5 row shall serve to satisfactorily con-- nect the two ends of the split lens rim and also to secure the pivoted lever in position zinc. in which the frame may be opened for insertion or removal. of a lens without the entire removal of the screw in a manner which would dis urb the position of the pivoted lever and associated parts.

Other objects and advantages of my improved construction should be readily ap parent by reference to the following specifics ion taken in connection with the accompanying drawings, and it will be understood that I may maize any modifications in the specific details of construction shown and described in the accompanying drawings within the scope of the appended claims without departing from or exceeding the spirit of my invention.

Figure 1 represents a front view of a mounting employing my invention Figure 11 represents a fragmentary per spective view of the parts in disassembled relation.

Figure Ill represents an enlarged frag- 1923. Serial 1%. 628,769.

inentary sectional view particularly illustrating my invention and Figure IV represents a view of the posi tion occup' oy the parts when the frame is opened Tor insertion or removal of a lens.

In the drawings the numeral 1 designates the bridge of what is termed a fingerpiece type of mounting having a seat 2 for the ro tatable or oscillatable linger-piece lever 3.

In the invention l. have illustrated the bridge piece as having rising therefrom the guide tube l on which is rotatably engaged the upstanding tube 5 of the fingerpiece lever, thus forming a long; or tubular bearing for the lever and reducing to a minimum liability of play between the parts so that play will be created after the mountin has been in use for a time. The tube 4 it will. be noted has the enlarged re css 6 at its upper end and has the lower portion liiteriorly threaded as at 7 to engage the threads of the screw 8 having the underlying head 9, the screw 6 being of a size so that the end of the screw may be dropped downward therein to thus facilitate assenr blinp; of the parts.

The present invention relates more especially to fingerpiece mountings in which an encircling rim, band, or frame is employed for retaining in place the lens 10, this band as shown comprising the inner metal rim '1 1 having; the lens receiving groove 12 and the surrounding Zylonite or other composition cover 13. One end oi the frame 11 is soldered or suitablv 'ecured to the base 2 of the bridge and is provided with the recess as into which the reduced opposed end 15 of the rim is adapted to fit. This op posed end provided spaced :1 distance from its terminus with the ear 16 centrally a-pertured as at 17 to receive the screw 9. In assembling the mounting as is indicated in Figure ll the lever with its tubular portion' is first slipped down over the tube 4 and the actuating spring 18 being then slipped over the tube 5 on the leverv lts end 19 is then held back while the frame portion 1 is moved downi the end 19 hooking around the portion 15 of the frame the parts being brought as nearly as possible into position where the car 16 will rest on the upper end of the tube it being: noted that the combined height of the lever and ill hill

hanging the ear 16 and its tube 5 is slightly less than the height of the projecting portion of the tube 4, so that the car 16 will fit down onto the tube 4. as a proper cap, and may be drawn tightly into place without binding against: the tn e on the lever. The parts having been thus as sembled the screw 8 is dropped down thru the aperture 17 into the recess 6 which is thentightened into place, the head 9 overdrawing it tightly downward into proper position. This is the original assembling of the frame before the lens is ready for mounting. When a lens is to be mounted it is merely necessary to partially loosen the screw as is indicated in Figure IV when the frame will be found to be fully opened up so that the lens ma be snapped in position and the screw a tightened without disturbing the lever and spring.

It is noted in this connection that the holding of the car 16 tightly clam )ed against the top of the post 4 coupled with the interlocking of the depending end of the frame in the socket 14 of the opposed end gives a very rigid and satisfactory connection of parts and to a large degree re duces the liability of relative twisting o f the ends of the frame or the like which tends to occur with ordinary non-locked, split joints retained by a single screw cr fastening device, but if desired to increase this locking action the tube 4 may as is indicated in Figures 11 and 111, have slight upstanding projections as at 20 fitting in sockets or serrations ill on the under side of the cap member to further eliminate any tendency to relative twisting of the parts.

I claim:

1. A device of the character described, the combination with a bridge member of a frame having one end secured to the bridge member the frame and bridge having a recess formed adjacent the point of attach ment adapted to receive the opposed end of the frame, a lateral projection on said opposite end spaced from said emh a securing screw for connecting the projection and bridge in spaced relation and a lever and actuating spring therefor surrounding the screw and disposed in the space between the bridge and the projection.

2. An ophthalmic mounting including a bridge mcinl'ier and a split frame havil'ig a fixed end and a loose end interlocking with the bridge member. a post rising from the bridge member adjacent the joint. a lever pivoted on the post, a projection on the free end of the frame adjacent its end overlyingthe post and lever, means for locking the post and projection against relative. movement. and means for clampingly securing the post and projection together to retain the frame ends in closed relation and secure the lever in position on the post.

J, H. HEALEY.

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