US1289210A - Electric iron. - Google Patents

Description

P. J. LINCOLN.

ELECTRIC mom. APPLICATION FILED 1AN.16. H-HB. 1,289,210, Patented Dec.31,1918.

2 SHEETS-SHEET 1.

'76 ("Jude-14 cm 7 JL in 00 Zn P. J. LINCOLN.

ELECTRIC IRON. APPLICATION FILED JAN. I6. 1915.

Patented. Dec. 31, 1918.

2 SHEETS-SHEET 2.

PURD J. LINCOLN, OF BIRMINGHAM, ALABAMA.

ELECTRIC IRON.

Specification of Letters Patent.

Application filed January 16, 1918. Serial N o. 212,107.

be heated by induction.

The invention has as a further object to provide an arrangement wherein the heat will be generated in the body of the iron so that a minimum amount "of current will be required to operate the iron.

The invention has as a still further object to provide a construction wherein the temperature of the iron may be easily controlled.

And the invention has as a still further object to provide an simple in construction, which maybe easily assembledand which will'jowing to the principle employed for heating the iron, be unusually durable in use.

' Other and incidental objects will appear as the description proceeds and in the drawings wherein I have illustrated the' preferred embodiment of the invention and wherein similar reference characters designate corresponding parts throughout thev several views: y Figure 1 is a longitudinal sectional view showing the general construction of my improved iron, b

Fig. 2 is a .plan view showing the body of the iron or heating element with the cover removed and illustrating the mounting of the primary coil employed.

- Fig. 3 is a transverse sectional view taken on the-line 343 of Fig. 1 and looking in the direction of the arrows, this view showf In carrying ing the mounting of the innermost housing plate for the switch of the iron, I

Fig. 4 is a detail plan view of the switch, and.

Fig. manner in whic the leads from the switch are connected with the windings of the pri-- mary coil for regulating the heating of the 11011.

out the invention, my improved iron is ibe formed. of cast iron, steel or other.

' bottom portion of the body.

iron which will be .ing the said .bracket having front and rear 5 is a dia ammatic view showing the formedwith a body 10 which approved material and is provided at opposite endsthereof' with front and rear upstanding blocks 11. and 12 integrally formed with the body. These blocks are, as partlcularly shown in Figs. 1 and 2, provided with beveled inner faces between which is 4 wedged the laminated core 13 of a primary c011 for supporting the said core to extend between the said blocks spaced above the The core'13 is preferably constructed of suitable thin sheets or strips of steel. Wound about the core 1s-a primary coil 14, the wireof which 1s preferably covered by an asbestos insulation to effectually prevent the possibility of short circuiting ofthe coil.

Removably fitted over the body. 10 and. holding the primary coil and its core against displacement is the cover 15 of the iron. This cover is formed of a suitable no'nmagnetic material such as aluminum or copper andatits lower edge is rested upon a flange 16 formed on the body 10 for supportcover. Detachably connecting the cover with the body are screws or other suitable fastening devices 17 threaded into .1 the blocks 11 and 12 of the said body. Connected in any approved-manner to the cover, as by a plurality of rivets, is a handle upstanding arms 18 and 19 respectively. Extending between the said arms at their upper extremities, is a rod 20 upon which is mounted a handle 21 which may be formed of wood.-.

As will now be noted upon reference to Fig. 4 of the drawings, thearm 19 of the handle bracket is formed with an enlarged switch plate 22 the lower edge. of which is ralityof switch points 25 upon the switch; v

key 23 as well as the plate 22. The switch of course, insulatedswitch points 25, are,

with respect to the said switch plate of the bracket arm. Seating against oppositqsides of the switch plate are coactlng housmg caps 26 and 27 for the switch, it being observed permost of which ex-' Patented Dec.31,191 8 that the switch key 23 is arranged to. pro-' other suitable fasten; no

y-shown in Fig. 1,

' electrical energy.

' out will reduced 'mary 0011 will at no time become sufficiently rality of leads or circuit 35 through the switch plate to engage a lateral flange 29 formed on the cap 2'? to seat against the inner side of the switch plate. This cap 27 is further connected with the for the switch may thus be readily removed 30 engaging through the said flange.

at any time desired.

At its rear extremity,

for the handle 21 of the iron is formed with a loop 31 and fitted through this loop to engage through the top of the housing cap ,26 is a flexible protecting coil 32 for the cable carrying the circuit wires of the iron. This construction provides a. con-- ,venient arrangement for mount ng the said coil as well as an arrangement tending-to prevent the breaking 0d of the-circuit wires at the iron. The said circuit wires may, of course, be equipped with any suitable plug for connecting the iron with a source of For the sake of clarity, T have, in Fig. 5 of the drawings, shown the manner in which the circuit wires are connected with the switch as well as with the primary coil of the iron. One of the said circuit wires, indicated at 33, is suitably connected with the switch key 23. The other of the said circuit wires, indibated'at 34, is connected with one terminal of the winding of the coil 14. Extending from the switch points 25 are a pluwires 35 each connected to the winding of the coil so as to include a difierent number of turns in cir+ cult. Consequently, as will be well understood, when the switch key 23 is operated to engage the switch 24 with any one of the swltchpoints 25, current will flow through the primary coil. Circulation of said current through the coil will, aswill also be well understood, through the core 10. The body flux will set up induced currents in the body tendmg to heat the said body. The heat will therefore be generated directly in the body where the heat is to be utilized. Consequently, less current will be required to operate the iron as compared with any construction wherein the heat of the iron is not generated in the portion of the iron used for ironing purposes. Furthermore, it will e seen that I provide an arrangement wherein the tendency of the iron to-burn toa minimum as the priset up a magnetic flux 13 and through the body the supporting rod.

cover for the heating being solid, such magnetic eluding a body,

heated to cause injury. The temperature of the iron is, of course, regulated by means of the switch 24 in connection with the switch points 25 to include either a greater or'less number of turns of the winding of the primary coil in circuit. ll thus further provide an arrangement wherein the heating capacity of the iron may be easily varied. In this connection, attention is directed to the fact that since the cover 15 for the 'body- 1s formed of non-magnetic material, such cover will tend to direct any stray .lines of force through the heating-element to thus efi'ect the utilization of practically the total energy of the primary coil.

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

l. A. device of the character described including a body, an exciting coil supported to coiiperate with the body, acover for the body, a handle bracket carried by the said cover and formed to provide a switch plate, and a switch mounted upon the said plate for controlling the How of current to the said coil.

2. A device of the character described including a body, an exciting coil supported by its core to cooperate with the body, a element, a handle bracket connected with the said cover'and formed to provide a switch plate, a switch mounted upon the said plate for controlling the flow pf current to the said coil, and housing caps connected to the plate for inclosing the switch.

3. A device of the character described inan exciting coil supportedi tending between the said arms and provided V at one end with a loop, one of the said arms being formed to provide a switch plate, a switch mounted upon the said plate for controlling the flowof current to the said coil, and a cable supporting member carried by said loop for said switch.

4. A device of the character described incoil supporting means carried thereby and formed IWith confronting beveled faces, and an exciting coil having theaextremities of its core wedged between the beveled faces. ofsaid means for supporting the coil to cooperate with the body.

In testimony whereof I aifix my signature.

PURD J. LIN OOLN. [1,, s.]

receiving circuit wires to the I

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