US1161998A - Glass-mold. - Google Patents

Description

amino snares PATENT orrron.

rman s. TITUSL-FERDINAND r. wEIiaLE, AND sAMUEL n. JoiiNsoNfor roar ALLEGANY, PENNSYLVANIA.

crass-Mom).

Specification of Letters Patent.

' Patented Nov. 30, 1915.

Application filed September 2, 1914. Serial No. 859,824.

v To all whom it may concern invented certain new and useful Improvements in Glass-Molds, of which the follow.-

ing is a specification, reference beinghad to the accompanying drawings. This lnvention relates to new and useful improvements in glass molds and more par ticularly to a mold for-1 forming concavo convex glass having-an annular flange and which is adapted for use upon lamps used 'on automobiles, motor-cycles, etc; the main Object of the present invention being the provision of a mold wherein the concavoconvex lens is formed and-which, at the same time is provided with aflat marginal edge whereby the same may bereadily attached to automobiles and motor-cycle lamps and all other similar lamps of this character.

Another object of the present invention is the provision of a mold which consists of a concavo-convex body having oppositely extending wings formed upon the under face thereof, whereby to support thesame in an;

upright position, said wings being provided at their outer ends with suitable openings for the reception of a tool, whereby the mold may be readily handled and, at the same time the body of the moldis provided with acentral opening to permit of the escapeof air beneath the glass as it takes the form of the mold.

pensive. to manufacture and, at the samev time, is simple in construction and operation. V a With the above and other objects in view,

the invention consists in'the novel featuresof construction, combination and arrangement ofparts as will be hereinafter referred to and more particnlarlypointed out 111 the d p v 1 central portion has been heated and ex-1 specification and claim-- In the accompanying plan .view of a mold constructed in acview taken on the certain degree.

drawing forming part of this application, Figure 1 is a' top.

. Referring more particularly to the drawing, 1 indicates the main body of the mold which is formed of iron, steel or any other suitable metal ofthis character andis'preferably constructed as shown, of a concave convex form. The'u'pper edge of the body of the mold is'provided with a'cut-away portion forming a suitable annular flat surface 2 and a shoulder 3. Arranged beYieath the mold adapted to support the same, are the elongated lugs 4, which 'extend outwardly in opposite directions from the center of the body and project at their outer endsbeyond the outer edge of. the mold and 'are preferably welded or otherwise secured to the convex surface of the mold.

The lugs 4 are provided within their out? wardly projecting ends with-suitable openings 5 adapted to receive the tines of a fork or other instrument for placing the molds "within a heated ovenor removing the same therefrom. In the formation of this headlight glass, a circular piece of window or plate glass is mounted upon the'annular flat surface 2, it'being understood that the'glass will be of sufficient size to fit snugly within the annular shoulder 3. A fork or other instrument is then engaged within'the'openings 5 of the lugs 4 and the mold placed within an oven heated to a degree which will accord with the thicknessof the glass which is used in forming the head-light glass. As the glass is heated, the central portion thereof will tend to drop downwardly within the body of the mold, expanding the glass to a It will be understood'that from placing the circles of glass upon the flat surface 2, a

a certain amount of air will ,be beneath the surface and asthe glass is heated and the" central portion drops down" to 'form theconcavo-convex portion, the" air beneaththe glass will escape through': a central opening 6 formedin the bottom of the 'mold- It will also be noted that the annular flatj surface Q iS 'ii O" be of siifiicientgwidtliito,support a circle of glass which is largejlenouglito pro- "'.vide an annular retainingfiflangefiafter the parided into a. concaveconvex form. It-will 1 be noted in Fig. 1 that the circl'e of glass thereof conforms tothe shape 'iof the mold and it will be iroted-ithat theedge] .fkof-the glass hascontractedand drawn away to retain a circle of nia rginal edge, said I from the shoulder 3, but as stated before,

this flat portion will be of sufficient Width glass the diameter of which will be suflicient so that after the concavo-convex portion has been formed, the marginal edge thereof Will still be of the desired Width.

From the above description taken in connection with the accompanyingxdrawings, it will be apparent that We have provided a simple and durable glass mold wherein the co-ncavo-convex glass is formed having a flat glass being used for the head-lights of automobiles andfinotor-cycles cooled.

and the like, and beingadapted for 'Will not stick or adhere any of the novel features the fiat or marginal edge usein securmg the glass or"'-lens 1n posltion. It will also be understood that before using this mold, a sufficient glazing surface will be applied to the inner face of the mold so ="that the heated glass quickly removed after the mold has been It will alsobe noted from the foregoing that our mold, as herein shown and described is extremely simple in construction and can be manufactured and placed upon the market at a comparatively low cost. WVhile e have shown and described the F preferred form of our invention, it will be obvious. that various changes in the details 1 of'construction and in the proportions may a be resorted to for successfully carrying our invention into practice, without sacrificing thereto, but can be alined, whereby a or departing from desc-ribed ourinvention,

tion, saidsupporting members being provided with curved edges adapted to flatly and being provided at their outer terminals w th apertures through whlch lifting 1nstru-ments may be lnserted for transporting .the mold, said supporting members being arranged in pairs,

the individual supporting members of each pair being diametrically lifting instrument, having parallel tines may be applied to the mold, by the insertion of the tines in the apertures of a pair of the supporting members. w a

In testimony whereof we hereunto affix oursignatures in the presence'of two \vit-' nesses. v I

' ALBERT S. TITUS.

FERDINAND P. VEIBLE. SAMUEL E. JOHXSON.

\Vitnesses:

D. SuHELMER, 4 LEO V. GODING.

the scope of the invention, as defined by the engage against the convex face of the mold

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