US1795148A - Electrical switch - Google Patents

Description

March 3, 1931.

l I ELECTRICAL SWITCH Filed Dec. 24, 1925 X); A TTORNEYS'.

J. F. SEUFFERT 1,795,143

Patented Mar. 3, 1931 PATENT OFFICE Jositrn r. sacrum", on NEW YORK, N. Y.,

ABSIGNOB TO HENRY HYKAN, OI BROOK- LYN, NEW YORK nnncrmcu. swrron Application Med December 24, 1925. Serial No. 77,458.

My invention relates to electrical switches, and particularly to snap switches. An object of my invention is the provision of a switch of the above character which is simpie in construction, inexpensive. to manufacture and reliable and durable.

My invention will be better understood by reading the following description taken in connection with the accompanying drawings,

in which,-

Fig. 1 is an interior view of the switch showingl the parts with one half the casingremove Fig. 2 is a view of the switch with certain pprts broken away to show the interior there- Fig. 3 is a plan view of the switch with the parts in the position shown in Fig. 2, with the casing added thereto; and

Fig. 4 is a sectional view, of the switch with the parts in the position which they assume just prior to the snapping of the contact member.

The device comprises a casing composed of two parts 1 and 2. One part is shown in plan in Fig. 1 and the two parts are shown in section in Fig. 3. Two contact clips 3 and 4 are placed in the recesses provided for them in the casing and one of the line wires 5 connects directly with the clip 3. The other wire 6 connects with the terminal 7 which is a part of the switch, which will now be described. The switch comprises a frame memher 8 having two side members 9 and 10 which are parallel with each other. An 0 crating member 11 is pivotally mounted in t e frame by providing it with lugs 12 and 13 which extend through openings in the side members 9 and 10, respectively. A U-shaped member 14 is pivotally mounted around the same pivot as the member 11 by having openings in the side members 15 and 16 through which the lugs 12 and 13 pass. A second U- nicnihcr 17 has its closed end mounted near the closed end of the member 14 by having lugs 18 and 19 thereon which pass through openings in the side members 15' and 16. An extension 20 on the operating member 11 extends beyond the pivot and into the open end of the coiled spring 21, the other end of which spring rests against the bottom of the second U-member 17. The art of the operating member disposed witliin the casing is preferably in the form of a flat plate, as plainly shown in the'drawings, this plate being provided with integral lugs 12 and 13 as described above, these lugs forming the pivot upon which the operating member rotates. The same plate is provided with the extension 20, which is in the form of a tongue of the plate extending into the spring 21 and having recesses on either side of the tongue in which the end of the coiled spring may be received. The'above construction is extremely simple in character and easily manufactured. The U-member 14 in the particular embodiment illustrated acts as a contact member and in one position rests against the frame 8, as shown in Fig. 2, and in the other 0- sition rests against a metallic stop 22 which is electrically connected with the clip 4.

The operation of the device is as follows: With the parts in the ositions shown in Fig. 2, the operating mem er 11 is moved in the direction of the arrow. This causes the ex- F tension 20 to extend into the open end of the spring 21, and as the member 11 is rotated the spring is compressed and also causes the U- member 17 to rotate around the lugs 18 and 19. As the movement of the member 11 is continued the parts finally assume the position shown in Fig. 4, wherein the spring is under compression and the upper end of the spring is brought onto the line joining pivots 1213 and 18-19. As soon as the free end of the spring crosses the line joining the two pivots, a toggle effect is produced and the spring immediately expands and throws the contact member 14 from the position shown in Fig. 2 to that shown in Fig. 1. This movement of the member 14 is very rapid and the contact is therefore closed with a snap. hen it is desired to open the switch the member 11 is moved in the opposite direction and exactly similar operations take place so that the switch parts move from the positions shown in Fig. 1 to those shown in Fig. 2 and the circuit is opened by a snap movement. In the form shown in the drawings only one side of the line is open, but if it is desired to do so, a double contact might be provided whereby both sides of the line could be opened in a similar manner.

From the above description it will be clear that a switch embodying my invention has many advantages, to wit, it is simple in con- The switch may be used in plug sockets or other small devices of asimilar nature.

I claim: 1. An electrical switch consisting of two U-members, one disposed within the other with the arms of the respective members in planes at substantially right angles to each other and with their bottoms substantially parallel to each other, a spring in the space switch member mounted on a fixed pivot, and a coiled compression spring having one end in contact with said switch member and the other With said extension, said extension comprising a flat plate having grooves in its end within which the end of said spring -is received.

5. An electrical switch consisting of an operating member mounted on a pivot and the bottom of the inner U-member, a pivot supporting said members, and a pivoted operating member contacting with the other end of said spring and adapted to c0mpress,it upon movement of the operating member about its pivot.

2. An electrical switch consisting of two U-members, one disposed within the other with the arms of the respective members in planes at substantially right angles to each other and with their bottoms substantially parallel to each other, a pivot connecting said U-members, a spring in the space defined by said arms and retained in place thereby and having one end bearing against the bottom of the inner U-member, a pivot supporting said members, and a pivoted operating member contacting with the other end of said sprin and adapted to compress it upon movement 0 the operating member about its pivot.

3. An electrical switch consisting of two U-members, one disposed within the other with the arms of the res ective members in planes at substantially right angles to each other and with their bottoms substantially parallel to each other, a pivot connecting said U-members, a spring in the space defined by said arms and retained in lace thereby and having one end bearing against the bottom of the inner U-member, a pivot supporting both of said U-members, an operating member mounted on the same pivot as the U-members, and having one end contacting with the other end of said spring and adapted to compressthe sprin upon movement of the operating member a out said pivot:

4;:An electrical switchconsisting of an operating member mounted on a pivot and having an extension beyond its pivot, a

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