US106735A - Improvement in pocket sun-dials - Google Patents

Description

DWIGHT L. SMITH,` OF WYATERBURY, CONNECTICUT.

Letters Patent No. 106,735, dated Aat/11.81523, 1870.

IMPROVEMENT IN :POCKET SUN-DIALS.

The Schedule referred to in these Letters Patent and making part of the sanie HOv-v--n To all whom it may concern:

Be it known that I, DWIGHT L. Snun, of Waterbury, in the county ot'New Haven and State ot' Connecticut, have invented a. new Improvement in Combined Compass und Sun-Dial; and I do hereby declare that the following, when taken in connection with the accompanying drawing and the letters of reference marked thereon, to be a full, clear, and ex-l act description of the same, and which said drawing constitutes part of this specification, and represents m- Figure 1, a side view with the case closed;

Figure 2, a top view open;

Figure 3, an under side view ot' the dial-plate, illustrating its construction; and inv Figure 4, a central section.

lhis invention relates to the construction cfa compass and sun-dial combined, and

It consists in uniting the gnomon, dial, and needle by extending projections or points from the gnomon through the dial, and bent so as to clasp around and secure the dia-l, gnomon, and needle together; also, in the manner, as hereafter described, for securing the crystal into the case.

AA is the dial.

B, the needle.

C, the guomon; the dial graduated in the usual manner, and arranged upon the needle B, in the proper position; the needle provided with aseat, D, to rest upon a central bearing, a.

'lhe dial is usually made from thin metal or paper Yand perforated on the central liuc, so as to permit the project-ions or eudsfl ofthe gnomon to pass through. The needle is also perforated in the same relative position, so `that the perforations designate the exact position required for the gnomon.

The snid points, d, after passing through both the dial and needle, are turned bot-h to the right and left, so that while they support the gnomon they at the same time secure the three parts togetherso that they may be set upon the pivot (t, as seen in tig. 4. A

rIhe pivot-a is set in the center 4ot the case C, and within this an auxiliary case or lining, E, is set, in to the upper edge of which the glass crystal F is arranged, and this is secured to the lining E, `by turning over the upper edge of the lining, then indenting below the crystal, as at f.

v .The lining extends Iabove the case Cso as to receive the cover L, as seen in figs. 1 and 4.

I claim as my inventionl. The combination of the. dial A, needle B, and gnomon C, constructed and united together by the extension D ot the gnomon, through both the dial and needle, in the manner described.

2. 'lhe combination of the gnomon C, cover L, lining E, and crystal F, as described, and when the dial is secured in the lining, in the manner set forth.

DWIGHT L. SMITH.

Witnesses:

GEORGE H. CoWELL, JNO. DISENHAM.

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