US717764A - Thermometer-case. - Google Patents

Description

No. 717,764. PATBNTEB JAN. 6, 1903. T. SANDHPv n E. DEMAR.

THERMOMETER CASE.

APPLICATION FILED 00T. 17, 1902` No MODEL.

f UMa-ruw A' UNITED STATES PATENT OEEICE.

NEW YORK, N. Y.

TH ERMoMETER-CASE.

SPECIFICATION forming paw of Letters Patent No.

Application led October l?, 1902. Seria-l No. 127,723.

To @ZZ whom/ t 10m/y concern:

Be it known that We, THEoDoRE SANDHOP and EDMUND DIEMAR, citizens of the United States, and residents of New York city, county and State of New York, have invented certain new and useful Improvements in Thermometer-Cases, of which theV following is a specification.

This invention relates to a thermometercase so constructed that the expanded mercury in clinic thermometerscan be returned to its normal position past the constriction by centrifugal action and without resorting to jolts or jars. In this way a disagreeable mechanical operation is avoided, the life of the thermometer is prolonged, and its accuracy is maintained.

In the accompanying drawings, Figure lis a perspective View of our improved thermometer-case, showing itin operation. Fig. 2 is a side view, partly in section, of the case; Fig. 3, an enlarged longitudinal section through the lower end of the case; Fig. Il, a cross-section on line el 4, Fig. 3; and Fig. 5, a longitudinal section on line 5 5, Fig. 4. p

The letter a represents a cylindrical chamber that may be closed at its open end by screw-cap b and is adapted for the reception ot' a clinic thermometer c. At its base or closed end the chamber a is provided with a pocket d of greater diameter and secured thereto by a threaded neck d'. The bottom u.' of chamber d forms a partition between the chamber and the pocket and prevents the thermometer from entering the latter.

The pocket d is traversed by a spindle c, upon which is rotatably mounted a pulley f, iniiuenced by a spring f', one end of which is secured to the spindle, While the other end is secured to the pulley. The pulley carries a iiexiblewire or string g, which passesoutto the pocket by depressing pin `ertion and also a 717.764, dated January s, 190s.

(No model.)

wardly through au opening d2 in the bottom of pocket d. To the free end of string g is secured a finger-ring g. The pulley j' carries a ratchet-Wheel h, engaged by a detent h', which is iniiuencedby a spring h2 and is operated by a push-pin h3. When the string g is drawn outward, the rotation of the pulley f winds up the spring f', so that by a subse` quent pressure on pin h3 the string will be drawn back into the pocket.

In practice a clinic thermometer c is, after use upon a patient, placed into the chamber a, so that its bulb c is received by cap b. The string g is now drawn out and the case is quickly rotated around the nger similar to a sling, after which the string is returned h3. In this way the mercury will be forced outward by centrifugal action and will thus pass the coustriction c2. The result is that the thermometer will be returned to its normal operative condition in a simple, quick, and gentle manner, thus avoiding objectionable physical exliability to iuj ure the thermometer itself by sudden jars or jolts.

VVWhat we claim is- A thermometer-case provided with a cylindrical chamber which is open at one end and closed at the other end, a cap for closing the open end of the chamber, a perforated pocket at the closed end of the chamber, a springinfluenced pulley within the pocket, and a string carried by the pulley, substantially as speciied.

Signed this 15th day of October, 1902.

THEODORE SANDHOP. EDMUND DIEMAR.-

Witnesses:

WILLIAM SCHULZ, F. v. Bruneau.

by us at New York city, New York,

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