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Publication numberUS789286 A
Publication typeGrant
Publication dateMay 9, 1905
Filing dateMay 28, 1904
Priority dateMay 28, 1904
Publication numberUS 789286 A, US 789286A, US-A-789286, US789286 A, US789286A
InventorsWilliard F Main
Original AssigneeWilliard F Main
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Surgical appliance.
US 789286 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

No. 789,286. PATENTED MAY 9, 1905. W. F. MAIN.



I ma m l" Y wibwa/pm UNITED STATES Patented May 9, 190 5.

WILLARD E. MAIN, or IoWA orrr, IoWA.


SPECIFICATION forming part of Letters Patent No. 789,286, dated May 9, 1905.

Application filed May 28, 1904. Serial No. 210,261.

To all whom, it may concern.-

Be itknown that I, VVILLARI) F. MAIN, a citizen of the United States, residing at Iowa City, in the county of Johnson and State of Iowa, have invented certain new and useful Im provements in Surgical Appliances, of which the following is a specification.

My invention is an appliance intended to prevent nocturnal emissions by causing an alarm that will awaken a sleeper whenever the urinary organ becomes enlarged and be fore any discharge can take place; and my invention consists of a receptacle which can be readily applied to and worn upon the body, with means for insuring the completion of an electric circuit on any undue pressure from said organ, as fully set forth hereinafter and as illustrated in the accompanying drawings, in which- Figure 1 is a section of the receptacle and adjuncts; Fig. 2, an external view of the same, showing its connection with an electric bell; Fig. 3, a plan of the bell and battery box.

The device consists, essentially, of a receptacle A of any suitable character, a movable piece of any required character so arranged in relation to electric terminals that it will by change of position make and break the circuit including said terminals, and means whereby to attach the device to the person of the wearer, together with an electric bell or other electric alarm B, flexibly connected with the receptacle by conductors, including the terminals, bell-battery, and bell-actuating magnet.

As shown, the receptacle A is a hollow tube, preferably of rubber and perforated to allow air to circulate freely and avoid heating the organ, and the bell-battery (not shown) is connected electrically by a flexible connection D with the terminals in the receptacle.

As shown, the terminals are in the form of two series of light springs 1 1 and 2 2, the springs 1 1 connected with one wire of the circuit and the springs 2 2 with the other.

The circuit-closer in this case consists of a plate 3, connected to or forming part of a movable piece E, shown as a rubber disk, so supported as to normally break the circuit, but in position to make contact with the organ on any abnormal enlargement of the latter and to then yield until it contacts with the springs 1 and 2, and thus closes the circuit. As shown, the piece E rests on a spiral spring 5, and the tension of the latter may be increased or diminished by moving a bearing plate or ring 6, on which the spring rests, by means of adjusting-screws 7 7. It is obvious, however, that the pieceE may be differently supported, so as to yield readily as required.

It is desirable in some cases to set the contact-piece E at different distances from the end of the receptacle. I therefore support the said piece and its ad juncts in a carrier F in the form of a box fitting in the receptacle and movable by a screw 8, turning in a threaded opening in the end of the receptacle and attached at its end, so as to rotate, to the bottom of the box.

The connection of the receptacle to the wearer may be by means of clamps Gr, flexibly attached to the receptacle and adapted to engage the clothing or a suitable band worn upon the body.

l Vithout limiting myself to the construction shown, I claim- 1. In a surgical device of the character set forth, the combination of a tubular receptacle, a longitudinally-movable contact-piece therein, a spring for carrying it in one direction, terminals, and means for electrically connecting them on moving the contact-piece to compress the spring, substantially as set forth.

2. In a surgical device of the character set forth, the combination of a tubular receptacle, a contact-piece supported to slide therein, a spring for carrying it in one direction, terminals beneath the contact-piece but'normall y out of contact therewith, and means for altering the tension of the spring, substantially as set forth.

3. In a surgical device of the character set forth, the combination of a tubular receptacle, a carrier adjustable therein, a movable contact-piece in said carrier, a spring for carrying the contact-piece in one direction, terminals, means for electrically connecting them on moving the contact-piece to compress the spring, and means for shifting the position of the said carrier in the receptacle, substantially as set forth.

4L. In a surgical device of the character set forth, the combination of a receptacle, a movable contact-piece, a spring for carrying it in one direction, tWo sets of springs connected with different parts of an electric circuit, and a metallic circuit-closer carried by the contact-piece in position to contact With both sets of springs, substantially as set forth.

5. The combination of the receptacle, a carrier, and means for adjusting it in the receptacle, and a movable contact-piece arranged to make and break an electric circuit and supported by said carrier, substantially as set orth.



EDWIN B. \Vlnsox, R. P. HOWELL.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US5769090 *Aug 20, 1997Jun 23, 1998Brown; NormaElectrical device to protect/minimize physical damage caused by sex
Cooperative ClassificationA61F5/0096, Y10S200/02