US1200992A - Process of making eyeglass-pads. - Google Patents

Description

W. S. SEARLES.

PROCESS OF MAKING EYEGLASS PADS.

APPLICATION FILED SEPT 5. 1914,

1,200,992. Patented Oct. 10, 1916.

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WITNESSES 16m m w zw/ ATTORNEY UNITED STATES PATENT OFFICE. v

WA YNE S. SEARLES, OF NEWARK, NEW JERSEY, ASSIGNOR TO NEW JERSEY OPTICAL I 00., OF NEWARK, NEW JERSEY, A CORPORATION OF NEW JERSEY.

PROCESS OF MAKING EYEGLASS-PADS.

To all whom it may concern Be it known that I, WAYNES. SnARLEs, a citizen of the United States, and a resident of Newark, county of Essex, State of New Jersey, have invented certain new and useful Improvements in Processes of Making Eyeglass-Pads, of which the following 1s a specification.

My invention relates to improvements 1n eyeglass pads and the process of making the same in which the pad or portion thereof which is adapted to rest against the nose of the wearer is connected directly and immediately to a metallic part of the nose grip ping structure without the intervention of rivets.

In the construction of the nose gripping members of eyeglasses it is quite general to line or cover either the whole of the nose gripping portions or certainportions thereof with a material such as celluloid. Here tofore it has been the practice to secure such covering or lining to a metallic part of the nose gripping member by means of rivets which extend through the lining or covering material. The ends of these rivets projecting through such lining or coverin material interrupt the surface thereof an constitute an objectionable feature of construction.

It is one of the objects of my invention to provide a construction wherein and whereby the lining or covering material is secured to the metallic nose gripping member or to some portion thereof without the employment or intervention of rivets.

In the construction of nose pads or gripping members embodying my invention I employ a lining or covering material such as celluloid which may be rendered plastic and somewhat mobile by the application of heat. When the lining or covering material is in such plastic condition it is combined with the metallic portion of the part of the nose gripping member to which it is to be applied by pressing said lining or covering and such metallic portion together and cans ing the same to become so interlocked and connected that they are held securely and firmly together without the presence of rivets. It will be apparent that such interlocking and such connection may be effected between pads and metallicparts of different Specification of Letters Patent. Application filed September 5, 1914. Serial N o. 860,492.

Patented Oct. 10, 1916.

forms and shape. however, underlying the idea of my invent1on is the same. One essential requirement, however, is that the lining or covering material shall be of a character which when heat is applied thereto is rendered sufliciently plastic to enable it to flow around and conform to the configuration of the surface of the metallic part of the mounting against which it is pressed or forced and which when cooled becomes sufliciently hard and rigid to hold fast to such metallic part. My invention comprehends not only an improvement in the process by which the lining or covering is secured to the metallic part of the mounting but it also comprehends the improved construction of pad after the same has been completed.

In order that my invention may be more clearly understood and comprehended reference should be had to the accompanying drawing in which I have illustrated several forms of convenient embodiments of the same. It must be understood, however, that changes in the details of construction and manufacture may be made within the scope of the claims without departing from my said invention.

In the drawings: Figure 1 is a transverse sectional view indicating the process of manufacture and showing in section the parts to be joined and secured together and also showing complement-a1 members of a mold; Flg. 2 1s a transverse sectlonal view The general principle,

of a pad and its shank or post secured thereto in accordance with my invention; Fig. 3 is a top plan view of the structure shown in Fig. 2; Fig. 4 is a perspective view of the shank or standard which is shown in Figs.

. 1, 2 and 3; Fig. 5 is a view similar to Fig. 1

showing a modified construction of shank or post; Fig. 6 isa transverse sectional view showing the pad and shank illustrated 'in Fig. 5 after having been connected and joined together; Fig. 7 is a top plan View of the construction shown in Fig. 6; Fig. 8 is aperspective view of the shank shown in Figs. 5, 6 and 7; Fig. 9 is a transverse sectional view showing a modified construction of the connection between the pad and the shank or post, including the molds em ployed in the manufacture of the same; Fig. 10 is a transverse sectional view of the pad and its shank or post shown in Fig. 9;

Fig. '11 is a top plan view of the construction shown in FigalO; and Fig. 12 1s a perspective view of the shank or post employed in Figs. 9, 10 and 11.

It will be understood that the figures ofthe drawing show the parts illustrated enlarged in order that their construction may be more clearly seen. Attention is also called to the fact that in the drawings the form of pad which is illustrated is one which a is adapted to be secured to some part of the "metallicnose gripping member, usually the upper end thereof, such pad when so con nected being adapted to grip the upper por-;

tion of the nose at the points opposite the inner corners of the eyes of the wearer, but as before indicated my invention may be employed in the manufacture of nose gripping members in which the whole inner surface is lined or covered with a material of the char acter above referred to. In the drawings, 1 and 2 designate the cooperating or coacting members of a mold. These members 1 and 2 are provided with recesses'3 and 4 which are complementary to each other and together constitute a space of the shape which it is desired the pad shall be. When the celluloid or some other material which may be fused or rendered plastic by the application of heat thereto is placed in the molds such material is shaped to conform to the space formed by the depressions inserted in the hole 8 and the shank 10 and pad 5 are moved toward each other and pressed together, the material of the pad 5 and the projection 7 being in a plastic state the upper end of the projection 7 spreads.

out and fills the annular space 11 so that the shank or post 10 is securely fastened to the pad'5 by means of the said projection 7 and the rim or flange 12 thereof. It should be understood that there should be suflicient material in the projection 7 to completely fill not'only the annular space 11 but the hole 8. It should also be understood that the shape of the hole 8 and'the space 11 may be either circular or polygonal as may be desired. When the parts 5 and 10 have been thus pressed together the plates 1 and 2 of the molds are separated sothat the pads may be removed therefrom.

In Figs. 5 to 8 inclusive I have employed a shank 13 of somewhat different construction from that shown in Figs. 1 to 4 inclusive. In said Figs. 5 to 8 the shank 13 is provided with an inwardly extending flange 14 at its lower end by reason of the presence of which the upper or main portion of the 'hole 15 in the shank 13 is of greater diameter than the opening between the edges of the flange 14. The flange 14 may be continuous as shown or it may be interrupted at intervals so as to form projections at intervals around the lower end'of the hole 15. When the material of the pad 5 and the projection 7 is in a plastic condition and the latter, which is somewhat smaller and longer than the projection 7, is inserted through the opening between the edges of the flange 14 into the hole 15 and the said pad 5 and the shank or stud 13 are pressed together the material in the projection 7 spreads out and completelyfills the hole 15 in the shank or stud 13 so that the two parts 5 and 13 are firmly and permanently secured together in the manner quite clearly illustrated in Fig.

, 6 of the drawings. The plate 1 of the molds in Figs. 1 and 5 is provided at its upperside with-an opening 16 of a shape to receive the shanks or studs "10 and 13 as is clearly apparent from said figures.

In Figs. 9 to 12 inclusive I have illus trated a third modification of construction embodying my invention in which the shank 17 is provided with a flange 18 upon its lower end which is adapted to be embedded in the rear side of the pad 5 while the latter is in a plastic or semi-fused state due to the application of heat thereto. In the constructionof the pad shown in these figures, 9 to 12 inclusive, the plastic semi-fused material 5 is placed within the recess in the member 2 of the mold while the shank 17 is inserted in a hole 19 formed in the member 1 of the mold with the flange 18 thereof seated upon the bottom of the recess 3 in the said member 1. The members are then moved together as shown in Fig. 9 of the drawings, the material 5 being compressed and the flange 18 being pushed into the plastic or semi-fused material 5 and the material of the latter caused to flow and form around the outer edges of the said flange and to grip and adhere to the same firmly so that when the said pad and its shank are removed from the moldsor dies we have a construction such as is illustrated in Fig. 10 in which the material 5 of the pad is firmly secured to the flange 18 of the shank or post 17.

In the several forms of construction illus trated one essential feature of the process of manufacture is that the material of the pad 5 and the projection 7 or 7 therefrom shall be of a character such that when heated it will become plastic or semi-fused so that it will conform to the surface of the shank or stud against which'it is pressed. For instance, in Figs. 1 and 5 the plastic material of pads which are adapted to be secured by means of the shanks to some part of the gripping members of a pair of eyeglasses usually the upper ends of such members, but the principle of my invention is susceptible of application to other forms of construction of pad, such, for instance, as those in which the entire surface of the nose gripping members are provided with a covering or lining of material which upon the application of heat changes from a hard into a plastic or semi-fused state.

It will be seen from the foregoing that I am enabled to provide nose pads for eyeglasses in which the bearing surfaces are perfectly smooth and uninterrupted by the projecting ends of rivets or any other metallic portion;

I claim i l. The process of manufacturing pads for eyeglasses which consists in heating material employed to formthe pad and thereby rendering the same plastic and forming and shaping the same into a pad and thereafter uniting such plastic pad to a metallic backing therefor by such pad together. i

2. The process of manufacturing pads for eyeglasses which consists in molding the said pads while the material thereof is in a plastic state to the shape desired and forming thereon a projection and thereafter while the material of said'pad is in a plastic state inserting the said projection into a hole formed in a shank or post to which it is desired to secure the said pad and pressing the said shank andplastic material together thereby causing the material of the said projection to flow laterally in the said hole to entirely fill the same.

3. The process of manufacturing pads for eyeglasses which consists in applying heat to a pad material and shaping the same as desired and forming a projection thereon, also providing an undercut opening in a shank or stud and inserting the projection of the said pad while in a plastic state into the pressing such backing and said hole and causing the material of said projection to flow laterally to fill the entire space of the hole in said shank whereby the said shank and pad members are secured together,

In testimony that I claim the foregoing as my invention, I have hereunto set my hand and seal this 3 day of September, A. D.

' WAYNE S. SEARLES. In the presence of'- HARRY A. TOWNLEY, ALFRED M. KNIGHT.

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