US1560148A - Switch for electric sadirons - Google Patents

Description

G. J. EASTER SWITCH FOR ELECTRIC SADIRONS Nov. 3, 1925 Filed April 12, 1922 Patented Nov. 3, 1925.

GEORGE LEASTER, or NIAGARA rams, new Yoax.

SWITCH FOR ELECTRIC SAIDIRONS.

Application filed. April 12, 1922. Serial No- 551,980.

To all whom is may concern:

Be it known that I, Gnonon J. Ens'rnn, a citizen of the United States, residing at Niagara Falls, in the county of Niagara and State of New York, have invented certain new and useful Improvements in Switches for Electric Sadirons, of which the following is a specification.

This invention relates to control mechanism for electrical implements, and more particularly to switches for electric sad irons.

An object of the invention is the provision of a switch which may be turned on or off by revolving the handle of the iron.

A further object of the invention is the provision of indicating means by which the operator may ascertain whether the non is connected to the source of current.

A further object of the invention is the provision of a device by means of which the handle will be retained in either position to prevent accidental operation of the switch.

In the form of the invention disclosed, I

' employ a rotatably mounted handle having a contact member adapted to bridge the space between a pair of spaced contacts when in one position to close the circuit, and being adapted to open the circuit when arranged in the second position.

In the accompanying drawings, I have shown one embodiment of the invention. In this showing: t

Figure 1 is a side elevation of an iron showing the invention applied, parts being shown in section,

Figure 2 is an enlarged vertical sectional view of one end of the handle,

Figure 3 is a transverse vertical sectional view on line 33 of Figure 2,

Figure 1 is a similar view on line 4,-4E of Figure 2, and,

Figure 5 is a plan view of one end of the handle.

Referring to the drawings, the reference numeral 1 designates theybody of a sad iron of usual construction having a heating unit,

(not shown) arranged therein. Suitable lead wires '2 extend into the body of the heating u-nit and are adapted to be connected to a source of current (not shown). A handle supporting member 3 is secured to the body of the iron by suitable fastening elements 4; and is provided with a pair of upstanding arms 5, adapted to receive and support the handle. handle 6 is, rotatably mounted in the arms 5. As shown, pins 7 re arrange in opposite ends of the handle and extend through openings in the supporting arms to rotatably support the handle. A metallic cap 8 is arranged on one end of the handle and this cap is held against rotation by a pin 9 extending through the adjacent arm 5, and arranged beneath the supporting pin 7. A shell 10 of suitable insulating material is arranged within the cap 8 and this shell is provided with a circular flange 11 which contacts with the cap. The shell is also retained stationary by the pin 9 which is received therein, as shown in Figures 1 and 2. A pair of spring contacts 12 are arranged within the insulating shell and spaced from each other as shown in Figure 3. The ends 13 of the contacts are arranged at right angles to the body'portion and parallel'to the end of the insulating shell 10. These ends are secured to the insulating shell by bolts 14-, one oi which passes through the shell, as indicated at 15, and forms a binding post for lead wire 16. These lead wires extend through the cap 8 to the body of the iron and are connected in the circuit of the heating element. An insulating plate 17 is arranged between the metal cap and the lead wires.

.The end of the handle is provided with a rectangularextension 18 formed of wood or other non-conducting material which is surrounded by a band 19 of metal. This exten sion is of sufficient length to bridge the space between the contacts 12 when in one position and close the circuit, as indicated in dotted lines in Figure 3 of the drawings, and when the handle is revolved a quarter of a revolution, the extension is disengaged from one of the contacts breaking the circuit. A washer 20 of suitable insulating material may be arranged on the pin 7 between the extension and the insulating shell.

The opposite end of the handle is pro-, videdwith suitable indicating means, whereby the operator of the iron may ascertain whether the iron is connected or disconnected. As shown, a band 21 is arranged on the end of the handle and revolves therewith; A cap 22, similar to the cap 8, surrounds this band and is held against rotation by a pin 23,-received"in the adjacent arm 5. This cap is provided with a slot 24 andthe band 21 is provided with suitable indicia 25, whereby the position of the switch may be determined.

In operation, with the parts in the position shown in full lines in FigureB of the drawings, the cireuit is broken and no ourrent is passing through the heating element of the iron. The engagement of the extension 18 and the lower contact prevents accidental rotation of the handle to close the circuit. A contact 12 is formed of resilient material and it is necessary to apply suflicient pressure to move this member under tension to the dotted line position shown, to close the switch. When the handle is revolved a quarter of a revolution, the extension bridges the space between the contacts and the current flows through the metal band 19. The circuit is then completed and current passes through the heating element of the iron. Accidental rotation of the switch is prevented when the handle is in this position by the tension of the spring contacts.

Each partial revolution of the handle revolves the band 21 and the indicia 25 arranged thereon indicates at all times whether the switch is on or off.

The insulation between the electric contacts and the metallic cap 8 prevents short circuiting through this cap. The handle is made of wood or other non-conducting material and the inner insulating shell 10 and flange 11 prevents currents from passing to the metallic cap 8 from the contacts 12. The outer insulating plate 17 further prevents current from passing to the metallic cap from the lead wires 16.

It is to be understood that the form of my invention herewith shown and described is to betake'n as a preferred example of the same, and that various changes in the shape, size, and arran ement of parts may be re sorted to without departing from the spirit of the invention or the scope of the subjoined claims. i

Having thus described my invention, I claim:

1. In an electric sad iron, a supporting member, a handle rotatably mounted in said supporting member, a contact member carried by said handle, and spaced contacts arranged adjacent said handle, said contact member being adapted to engage one of .said spaced contacts at all times to prevent rotation of the handle and being adapted to engage another contact when in one position to complete an electric circuit.

3. In an electric sad iron, a supporting member, a handle rotatably mounted in said supporting member, a contact member carried by said handle, a pair of spaced contacts arranged adjacent said handle, said contact member being adapted to engage one of said spaced contacts at all times to prevent accidental rotation of the handle, and being further adapted to engage one contact when in one position to com )lete an electric circuit, and means carried by said handle to indicate the position of said contact member.

at. In an electric sad iron, a supporting member, a handle rotatably mounted in said supporting member, a contact member carried by said handle, a stationary restraining device arranged adjacent said contact member to engage said contact member at all times to prevent accidental rotation of the handle, I and a stationary contact adapted to be engaged by said contact member whenthe contact member is in one position to complete an electric circuit.

5. An electric sad iron, a supporting member, ahandle rotatably mounted in said supporting member, an extension formed on said handle, a band of electrical conduct ing material surrounding said extension, a

stationary restraining member arranged ad jace'nt said handle and engaging said handle at all times to prevent accidental'rotation thereof,,anda stationary contact adapted tofengage said handle when in one posi. tion to'complete an electric circuit- 1 6. In an electric sad iron, a supporting member, a handle rotatably mounted in said supporting, member, a contact member carried by said handle, a stationary restrain ing device arranged adjacent said handle and engaging said handle at all times to prevent accidental rotationthereof, and a stationary contact adapted to be engaged by said contact member when the contact memher is inone position to complete an electrio circuit.

7. In an electric sad iron, a supporting member, a handle mounted in said supporting member and capable of rotating therein, a contact member carried by said handle, and a plurality ofstationary, spaced contacts adapted to be engaged by said contact member when it is in one position to complete anelectric circuit, one of said spaced contacts engaging said contact nember when in said position with sufficient pressure to prevent accidental rotation of the handle.

In testimony whereof I afiix my signature.

GEORGE J. EASTER,

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