US987694A - Electric high-water alarm. - Google Patents

Description

E. E. BRACKETT.

ELECTRIC HIGH WATER ALARM.

APPLICATION FILED JULY 14, 1909.

987,694. Patented Mar. 28,1911.

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E. E. BRAGKETT.

ELECTRIC HIGH WATER ALARM.

APRLIOATION TILED JULY 14, 1909.

Patented Mar. 28, 1911.

2 BEEBTHAHEM 2.

Edwin E .Bracketi' UNITED STATE PATENT OFFICE.

EDWIN E. BRACKETT, OF CENTRAL FALLS, RHODE ISLAND.

ELECTRIC HIGH-WATER ALARM.

To all. whom it may concern:

Be it known that I, EDWIN E. Bimoiin'r'r,

a citizen of the United States, residing at lentral F ails, in the county of Providence, State of lthode Island, have invented certain new and useful Improvements in Electric Highater Alarms; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the artto w iich it appcrtains to make and use the same.

This invention relates to electric alarms and has special reference to a form of switch adapted to be used with electrically operated high water alarms.

One object of the invention is to provide a switch of sensitive nature which shall. be free from liability of sticking or lodging until the water has reached the height for which the alarm is intended.

.AllOtllGi object of the invention is to im-' prove the general construction and simplify switches of this character.

With the above and other objects in view the invention consists in general of a novel form of knife switch adapted to be used in connection with high water alarm.

The invention further consists in certain novel details of construction and combinations of parts hereinafter fully described, illustrated in the accompanying drawings, and specifically set forth in the claims.

in the accompanying drawings, like characters of reference indicate like parts in the several views, and Figure 1 is a side elevation partly diagrammatic of a switch of this character used in connection with a refrigerator and its water pan. F ig. 2 is a section on the line 2-2 of Fig. 1. Fig. 3 is a bottom plan view of the switch. Fig. 4. is a longitudinal median section through the invention. Fig. 5 is a section on the line 55 of Fig. 4-. Fig. 6 is a section on the line 66 of Fig. 4;.

The numeral 10 indicates the bottom of a refrigerator and at 11 is shown the ordinary water pan employed to collect the water which forms by the melting of the ice in the refrigerator. Secured t0 the bottom of the refrigerator is a pair of spaced brackets 12 which carry a panel 13 provided with a longitudinal centrally disposed slot 14:. Adjacent one end of the slot 14 is a downwardly dependingUshaped member 15 preferably termed the fulcrum loop. This U-shaped member 15 is provided with oppositely ex- I Specification of Letters Patent.

Application filed July 14, 1909.

Patented Mar. 28, 1911.

Serial No. 507,625.

tending feet 16 which are attached to the under side of the panel 18 and through the sides of the member 15 extends the stem 17 of a binding post, the head of which is indicated at 18. Suspended from the panel 13 opposite the other end of the slot lt is a pair of blocks 19 and suspended from these blocks is a stop loop 20 of U-shape. This step loop is provided with feet 21 for the purpose of attaching the stop loop to the blocks 19. Extending through the sides of the stop loop 20 is the stem of a. binding post 22, the head whereof is indicated at 23. Pivotally mounted on the stem 17 is a lever 24 and this lever is of less thickness than the space between the sides of the iembers 15 and 20 so that the lever is freely slidable between these members, and that without friction on the side walls thereof. This lever 24: is provided with a suitable counterweight 25 for the purpose of normally urging the lever to the position indicated in dotted lines in Fig. 1. The end of this lever is provided with a suitable aperture 26 for the purpose of receiving one end of a chain 27 the opposite end of which is attached to a hollow ball 28 adapted to act as a float and to rest upon the top of the water contained in the pan 11.

From an inspection of Fig. 1 it will be seen that the bight portion of the fulcrum loop 15 engages the end of the lever 24 to which the ball 28 is attached when this end is depressed so that said bight portion limits the movement of the lever in one direction.

At 29 is indicated an ordinary electric bell and this bell is located in any preferred relation to the pan 11 and refrigerator bottom 10. For instance, the bell may be carried up to a room occupied by servants or may be located on the side of the refrigerator as is deemed best adapted for the purpose. Adjacent the bell 29 is a one point switch 80 and at 31 is indicated a battery. From the binding post 22 a wire 32 extends to the battery 31 and from the battery 31 a wire 38 extends to the pivot pole of the switch while from the contact of this switch a wire 34 extends to one of the binding posts of the bell and a wire 35 extends from the opposite binding post of said bell to the binding post 17.

Then the water is low in the pan 11 the float 28 assumes the position indicated in full lines in Fig. 1 but as the water rises the float gradually rises with the water until finally the lever 2i assumes the position shown in dotted lines in that figure. It is to be noted that, by reason of the lever being of less width than the space between the sides of the members and 20, the lever is very freely movable on the stem 17 so that there is no danger of its jamming or hanging up during the downward movement of the weighted end. \Vhen the weighted end contacts with the stem 22 a circuit is completed from the battery 31 through the wire stem 22, lever 2 1, stem 17, wire 35, bell 29, wire 3%, switch and wire 33 back to the battery 31. hen the circuit just described has been established the bell 29 rings and will continue to ring until the attendant empties the pan ll when the lever 27L will reassume the position shown in dotted lines in Fig. 1.

By reason of this construction the lever 24- is positive in its action and will not hang up and fail to establish the circuit with the consequent liability of overflowing of the pan or tank 11.

There has thus been provided a simple and eflicient device of the kind described and for the purpose specified.

Having thus described the invention, what is claimed as new, is

1. In a device of the kind described, a switch including a panel, a fulcrum loop suspended therefrom, a binding post provided with a stem extending across said loop, a lever pivoted on said stem, said lever having one end adapted to contact with the bight portion of the fulcrum loop to limit the movement of the lever in one direction, and

having one end adapted to contact with the bight portion of the fulcrum loop to limit the movement of the lever in one direction, a guide loop suspended from said panel to guide the end of said lever, and a second binding post having its stem extending across the second guide loop and lying in the path of said l ver end.

3. In a device of the kind described, a switch including a panel, a fulcrum loop suspended therefrom, a binding post provided with a stem extending across said loop, a lever pivoted on said stem, said lever having one end adapted to contact with the bight portion of the fulcrmn loop to limit the movement of the lever in one direction, and a second binding post having its stem in the path of the lever end, said panel being provided with a slot to receive and guide the end of said lever, and the space between the sides of said loop being greater than the thickness of said lever.

4. In a device of the kind described, a switch including a panel, a fulcrum loop suspended therefrom, a binding post provided with a stem extenoing across said loop, a lever pivoted on said stem, said lever having one end adapted to contact with the bi'ght portion of the fulcrum loop to limit the movement of the lever in one direction, a guide loop suspended from said panel to guide the end of said lever, and a second binding post having its stem extending across the second guide loop, said panel being provided with a slot to receive and guide the end of saidlever, and the spaces between the sides of said loops being greater than the thickness of said lever.

In testimony whereof, I atlix my signature, in presence of two witnesses.

, EDVIN E. BRACKETT.

itnesses:

Crmnnns M. READ, Vnno T. Pom).

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.

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