US359260A - Combined push-button and thermostat - Google Patents
Combined push-button and thermostat Download PDFInfo
- Publication number
- US359260A US359260A US359260DA US359260A US 359260 A US359260 A US 359260A US 359260D A US359260D A US 359260DA US 359260 A US359260 A US 359260A
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- US
- United States
- Prior art keywords
- button
- thermostat
- contact
- push
- pin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 239000000203 mixture Substances 0.000 description 12
- 238000010276 construction Methods 0.000 description 2
- 230000000875 corresponding Effects 0.000 description 2
- 229910000743 fusible alloy Inorganic materials 0.000 description 2
- 230000011664 signaling Effects 0.000 description 2
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H37/00—Thermally-actuated switches
- H01H37/74—Switches in which only the opening movement or only the closing movement of a contact is effected by heating or cooling
- H01H37/76—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material
Definitions
- FIG. 1 A first figure.
- Our invention relates to improvements in the combination of the electric push-button with a thermostat for automatically transmitting alarms and locating fires in buildings; and the objects of our invention are to produce such combination in such manner as to form a simple, neat, and inexpensive device which may be utilized effectively as a push-button or thermostat.
- b represents a push-button head having a anged base, and being loosely seated in the usual manner within the circular case d.
- the button-head is provided with a vertical hole extending through its central portion, the upper portion of said hole being enlarged to form a slightly-conical depression, c, in the upper end of the button-head.
- a pin Inserted loosely within the vertical perforation in the button-head is a pin, e, of such length as to admit of its lower end extending slightly below the bottom flange of the button when its upper end is flush with the base of the depression c. rlhe pin having been inserted within the button until in the posit-ion just described, a melted composition consisting of soft fusible alloys is poured into the depression c, forming, when cool, a stop-bearing for the upper end of the pin, the lower end of which bears against the upper side of a contact-spring, f, near the middle of its length.
- This contact-spring fis secured in the usual manner at its rear end to the disk g, at which point it receives the electric current from the wire h. Extending from this point aslight distance the upward spring f is then bent for- (No model.)
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Thermally Actuated Switches (AREA)
Description
(No Model.)
F. KEFFER &'J. A. MODOWELL.
GOMBINED PUSH BUTTON AND THERMOSTAT.
No. 359,260. Patented Mar. 15,1887.
FIG#
- UNITED STATES PATENT OFFICE.
FREDERIC KEFFER AND JOHN A. MODOVELL, OF COLUMBUS, OHIO. I
COMBINED PUSH-BUTTON AND THERMOSTAT.
SPECIFICATION forming part of Letters Patent No. 359,260, dated March 15, 1887.
Application filed July 8, 1886. Serial No. 207.514.
To a/ZZ whom it may concern:
Be it known that we, FREDERIC KEFEER and JOHN A. McDowELL, citizens of the United States, residing at Columbus, in the county of Franklin and State of Ohio, have invented a certain new and useful Improvement in Combined Push-Buttons and Thermostats, of which the following is a specification.
Our invention relates to improvements in the combination of the electric push-button with a thermostat for automatically transmitting alarms and locating fires in buildings; and the objects of our invention are to produce such combination in such manner as to form a simple, neat, and inexpensive device which may be utilized effectively as a push-button or thermostat. These objects we vaccomplish in the manner illustrated in the accompanying drawings, in which- Fgure lis a sectional view of our invention, and Fig. 2 is a plan view of the same.
Similar letters refer to similar parts throughout both views.
b represents a push-button head having a anged base, and being loosely seated in the usual manner within the circular case d.
The button-head is provided with a vertical hole extending through its central portion, the upper portion of said hole being enlarged to form a slightly-conical depression, c, in the upper end of the button-head.
Inserted loosely Within the vertical perforation in the button-head is a pin, e, of such length as to admit of its lower end extending slightly below the bottom flange of the button when its upper end is flush with the base of the depression c. rlhe pin having been inserted within the button until in the posit-ion just described, a melted composition consisting of soft fusible alloys is poured into the depression c, forming, when cool, a stop-bearing for the upper end of the pin, the lower end of which bears against the upper side of a contact-spring, f, near the middle of its length. This contact-spring fis secured in the usual manner at its rear end to the disk g, at which point it receives the electric current from the wire h. Extending from this point aslight distance the upward spring f is then bent for- (No model.)
ward, and, passing beneath the button-head b and pin c, is provided near its outer or free end with an upper contact-point, k, and a lower contact-point, m, said free end being suspended by pressure of the pin c about midway between the corresponding contact-points, n o, fixed, respectively, on the upper and lower sides of contact-arms p and o of the `U-shaped spring s, the arm p being secured to the disk g and connected with the wire t in the usual manner. The spring f is so bent that in case the pressure of the pin e should be withdrawn the natural tension of the spring will cause it to spring upward until the contact-points la and o join.
In case it is desired to use the push-button for signaling purposes, pressure upon the button-head will cause the pin e to extend lower, thus pressing the spring fdownward until its contact-point m is joined with the contactpoint n, thus closing the circuit in the usual manner.
When the/temperature of the air of the apartmentqwithin which the above-described button is placed has reached a sufficient height, the fusible composition will readily melt, allowing the pin c to escape. The contact-point 7c is joined with the contact-point o on the arm r, thus closing the circuit and transmitting the alarm in the usual manner.
By the construction and operation above described it will readily be seen that a simple, cheap, effective device is formed, which may readily be utilized as either a thermostat or electric push-button.
Having now fully described our invention, what we claim, and desire to secure by Letters Patent, is-
In a combined push-button and thermostat, the combination of the button-head b, having the central pin, c, and a depression, c, filled with a fusible composition, with the contact: springs fand s, substantially as and for the purpose specified.
FREDERIC KEFFER. JOHN A. MCDOWELL. Witnesses:
W. S. SHEPHERD, J. P. ALLEN.
Publications (1)
Publication Number | Publication Date |
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US359260A true US359260A (en) | 1887-03-15 |
Family
ID=2428299
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US359260D Expired - Lifetime US359260A (en) | Combined push-button and thermostat |
Country Status (1)
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US (1) | US359260A (en) |
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- US US359260D patent/US359260A/en not_active Expired - Lifetime
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