US950221A - Jeweler's gage. - Google Patents

Description

H. V. BERNHARDT. JEWELER'S GAGE.

APPLICATION FILED JULY 13, 1909.

950,221. Patented Feb. 22, 1910.

WITNESSES firmwmw w HERMAN V. BERNHARDT, 0F NEWARK, NEW JERSEY. I

JEWELERS GAGE.

Specification of Letters Patent. 'AppIication filed July 13, 1909. SeriatNo. 507,296.-

Patented Feb. 22,1910.

T 0 all whom a'ma concern.

Be it known that I, HERMAN V. BERN- IIARDT, a citizen of the United-States, residing at Newark, in the county of Essex and State of New Jersey, have invented certain Improvementsin Jewelers Gages, of which the following is a specification.

The objects of this invention are to pro- Vide a gage of improved construction which can be used for determining the sizes and weights of stones which are to be set, and also the sizes of mountings or settings for said stones; to provide such a gagereading upon one of its faces in terms of weight as carats, and upon its other face in terms of size, such as millimeters, to provide such a gage which shall be very compact and convenient to carry in the-pocket or elsewhere; to secure great simplicity of the gage, both in its construction andin its use; to thus provide a convenient gage by which stones and their settings can be measured quickly and accurately, and to obtain other advantages and results as may be brought out in the following description.

Referring to the accompanying drawings, in which like numerals of reference indicate corresponding parts in each of the several figures, Figures 1 and 2 are face views of my improved gage from its opposite sides, showing the carat and millimeter readings, respectively, and Fig. 3 is a transverse section of the gage on line 3-3 of Fig. 2.

In said drawings, 15 indicates the body portion of my improved gage, which I have shown as approximately circular with a large opening 16 in the middle, although it will be understood that the body portion might be of other shapes. Near the outer edge. of the said body portion or plate 15 is a series of outside- calipering apertures 20, 21, 22, 23, etc., and from said outer edge opposite the said apertures project insidecalipering projections 40, 41, 43, etc., the inner edge of the body portion around the opening 16 providing a finger grasp or means for holding and handling the gage.

The body portion 15 is preferably formed of thin sheet material, and all in one piece, although it might be otherwise. The out side- calipering apertures 20, 21, 22, etc., form a graduated series of sizes, as will be understood, any one of which may be selected and used in measuring a gem. On

one side of the body portion 15 of the gage,

these graduated openings are marked in terms of carats, or weights of stones, as shown in Fig. 1, while on the other side of the body portion 15 the markings are'in terms of size, or in millimeters, as shown in 2. Each one of the said outside- calipermg apertures 20, 21, 22, 23, etc., is preferably circular in shape, as shown, and all said apertures are arranged in close proximity to the outer edge of the body portion or plate 15.

From the outer edge of the body portion or plate 15, at points directly opposite the outside- calipering apertures 20, 21, 22, etc., project narrow necks G0, 61, 62, 63, etc, These necks are preferably in longitudinal alinement each with a line drawn through the center of the adjacentoutside caliperin aperture perpendicular to the periphera edge of the bod portion 15, or substantially radial lines in the form of gage illustrated in the drawings.

At the outer end of each neck 60, 61, 62, &c., is an inside calipering disk 80, 81, 82, 83, etc., respectively, and the disk at the outer end of each neck is of the same size as the outside-calipering aperture at the base of said neck. The markings above described upon the sides of the body portion or plate 15, adjacent to the outside- calipering apertures 40, 41, 42, etc., therefore apply equally well to the inside- calipering disks 80, 81, 82, etc. Twoseries of markings are thus avoided, without any uncertainty or confusion to the operator, who always knows that any inside-caliperin projection is of the same size as the outsi e-calipering aperture to which it is adjacent.

My improved gage is of especial advantage to jewelers and stone-setters, since in fitting a stone to a setting it is necessary only to find the aperture 20, 21, 22, 23, etc., through which the stone passes, and then select a setting into which the adjacent inside calipering projection fits. N 0 time is lost nor inconvenience and confusion caused by having to pass a considerable distance from one calipering means to the other, or over any intervening calipering means, in using my improved gage. Furthermore, a workman having one of my improved gages can instantly translate measurements from carats to millimeters, or vice versa, by simply looking on'the other face of the gage. As for instance, if he is given carats and wishes to work to millimeters, he looks up the given carat measurement on the face of the gage proved and then reads the equivalent size inmillimeters from the o posite face. Also myimgage wil serve for both preclous stones (which are measured in carats) an for imitation stones (which are measured in millimeters), and thus two gages.

Having thus described the invention, what I claim is:

1. A age compri itself ad acent to one takes the, place 0 ing a plate having in of its edges an outsidecalipering aperture entirely surrounded by y calipering apertures, a

. tures bein side-calipering the plate, a neck projecting from said edge of the plate in a direction away from said aperture and opposite said aperture with respect to said edge,

of said necks, pering members and outside-calipermg aper- 1n separated hnes'extendmg 1n the same direction and each aperture being thetwo series of inside-callopposite an inside-calipering member of the same size. 4

3.The hereindescribed gage comprising a body portion having in itseli adjacent to its edge a series of outside-calipering circula'r apertures, a series of necks projecting from said edge of the body portion, each in central longitudinal alinement with the diameter of an aperture, and inside caliperingdisks at the outer ends of said necks, each disk being the same size as the aperture with whose diameter the neck supporting said disk is in alinement. v r 4. The hereindescribed gage, comprising a substantially circular body portion of sheetmaterial having in itself adjacent to the edge a series of outside-calipering apertures, a series of necks projecting from the edge of said body portion and insidecalipermg disks at the outer ends of said necks, the center of an. aperture being in substantiall the same radial line of said circular b0 y as the center of a disk and each'aperture and disk thus in radial alinementbeing of the same size.

' HERMAN V. BERNHARDT. In the presence of-- RUssnLL M. EVERETT, FRANCES E. BLonsEr'n'

Images