US2106936A

US2106936A - Lightweight sadiron construction

Info

Publication number: US2106936A
Application number: US31613A
Authority: US
Inventors: Howard A Smith
Original assignee: Knapp Monarch Co
Current assignee: Knapp Monarch Co
Priority date: 1935-07-16
Filing date: 1935-07-16
Publication date: 1938-02-01
Anticipated expiration: 1955-02-01

Description

Feb. 1, 1938. H. A. SMITH LIGHTWEIGHT SADIRON CONSTRUCTION Filed July 16, 1935 Patented Feb. 1, 1938 UNITED STATES 2.100.930 moiirwaicn'r, sanmon CONSTRUCTION HowardA. Smith, St. Louis, Mo., assiguor to Knapp-Monarch Company, St. Louis, Mo., a

corporation of Missouri Applicationlnly 1a, 1935, Serial No. 31,613

8Claims. (01.219

An object of my invention is to provide a light weight sad iron construction having parts of simple, durable and inexpensive construction, which are readily assembled and retained in assembly with but very few fastening parts.

A further object is to provide a light weight sad iron construction; comprising a sole plate having a heating element groove, a heating element being provided in the groove and retainedin position by a sheet metal plate rather than the usual weight member, so that a light weight iron is thus produced, the sheet metal plate being preferably retained in position by a simple fastening element adjacent its center driven into'a socket of the sole plate.

Still another object is to provide a novel terminal pin assembly, which is assembled under tension relative to the shell and supported thereby and to provide a rest member and protector for the terminal pin, which is also secured under tension to the shell.

With these and other objects in view, my invention consists in the construction, arrangement and combination of the various parts of my light weight sad iron construction, wherebythe objects contemplated are attained, as hereinafter more fully set forth, pointed out in my claims, and illustrated in the accompanying drawing, in which:

Figure 1 is a vertical, longitudinal, sectional view through a light weight sad iron embodying my invention.

Figure 2 is a horizontal sectional view on the line 2--2 of Figure l. m

Figure 3 is a sectional view of a portion of Figure 1, showing the parts during assembly, and particularly a terminal. assembly being assembled relative to the shell of the iron.

Figure 4 is a similar sectional view'showing a On the accompanying drawing, I have used the reference numeral ill to indicate-a sole" plate. It is provided with a heating element groove, in

which is a heating element i4 comprising pref-.-

erably a coiled resistor embeddedin refractory material.

The heating element It 'is retained in position by a sheet metal plate I6 which in turn is secured to the sole plate III by a headed pin i8. The pin I8 is made of brass or the like, and is a drive fit in a socket 20 of the sole plate In, so

as to be frictionally held therein after the simple operation of driving it home, instead of having to use screws as in the ordinary manner.

The sole plate i0 is provided with a boss 22 having a threaded socket 24. vThe sheet metal plate i6 is provided with a perforation 28 through which the boss extends.

A shell28 is mounted on the sole plate l8 and held in mounted position by a screw 38. The

upper end of the screw 30 extends through a perforation 32 in the shell 28 and is screwed into the socket 24. 1

A handle yoke 34 is provided having a perforation 36 for the screw 30 to extend through. The shell 28 is provided with a pair of perforations 58 into which projections 40 of the handle yoke 88 extend. .This prevents the handle yoke from turning relative to the screw 30 and the screw provides a single means for retaining the handle yoke in position. A handle 42 is mounted on the yoke 34.

The sheet metal plate It has a pair of perforations 44 in whichinsulators 46 are located.

The ends 48 of the heating element extend through the insulators l8 and are insulated by them from contact with the sole plate and the sheet metal plate.

The heating element ends 48 are connected with terminal pins 50, which are mounted on and insulated from a terminal pin support A shown in Figure 6. The support A comprises a. plate portion 52 dished and terminating in a flange El.

'A portion 56 of the flange 54 is displaced so as to provide a yoke-like construction at the front of the support A. The support A also includes an arm 58 terminating in a lug 60.

The shell 28 has a pair of walls indicated at 28a and 28b, which are arranged at an angle relative to each other. The wall 28a is provided with a terminal pin opening 62 closed by the plate portion 52 of the support A when in assembled posi-' tion and'through which the terminal pins extend. 1

The yoke portion provided by the flange 54 and -'the offset portion 56 thereof and the lug are initially formed a greater distance apart than the forward edge of the terminal pin opening 52 and a perforation 64 in the wall 2811.

To assemble the support A relative to the shell 2a,. the yoke portion is first engaged with the front edge of the terminal opening 52 as in Fig- -'ure' 3, andg the arm 58 issprung by a tool indicatedat 66 in the direction of the arrow 0, so that the lug'ill can enter the perforation BI. and

thereafter the arm- 58 will spring to its original 68, an arm portion 10, and side flanges l2 and M. The flanges 14 terminate in hooked lugs 16 adapted to hook into the perforations 18 of the wall 28a of the shell 28. The flanges 12 are provided with forwardly extending lugs v adapted to enter perforations 82 of the wall 28b, by first placing the rest member in the position shown in Figure 4, and then swinging it as indicated by the arrow l2 until the dotted position of Figure 1 is assumed. Thereafter the widened foot portion 68 is sprung downwardly to the full line position, and the lugs as bent over laterally inside the shell to thus connect the rest member under tension with the shell.

The angle of the forward and lower edges of the flanges and it respectively is slightly less acute than the angle of the walls 28a and 28b as illustrated the dotted lines in Figure 1 so that when the full line position is assumed, the parts are under tension.

The terminal assembly and rest member, it will be noted, are of simple construction, and the assembly thereof relative to the shell takes but a minimum of time. I am thus able to produce a sad iron which is light in weight and also inexpensive, because assembly of the parts and the material required for the parts is thus reduced to the minimum.

Some changes may be made in the arrangernent and construction of the various parts of my light weight sad iron construction, without departing from the real spirit and purpose of my invention, and it is my intention to cover by my claims, any modified forms of structure or use of mechanical equivalents, which may be reasonably included within their scope.

I claim as my invention:

1. In an electric appliance having a heating element and a shell, a terminal assembly for said heating element comprising an elongated plate portion having a pair of termin'als thereon and spaced longitudinally thereof, and an arm portion extending from one side thereof and arranged at an angle relative to the plane of said plate portion, the opposite side of said plate portion and the outer end of said arm portion engaging spaced parts of said shell under stress to support said terminal assembly relative to said shell.

2. In an electric appliance having a heating element and a shell, a terminal assembly for said heating element, comprising a plate portion, and an arm portion arranged at an angle relative to each other, opposite ends of said terminal assembly having lugs, said shell having spaced perforations to coact with said lugs, the parts of said perforations with which said lugs coact being spaced closer together than the distance apart of said lugs, whereby said terminal assembly after coactipn with said shell remains in coaction therewith, under stress.

:3. In an electric appliance having a heating element and a shell, a terminal assembly for said heating element, comprising an elongated terminal pin supporting portion, andanarmportion extending from the side of said pin supporting portion, said shell having a terminal pin opening, said terminal pin supporting portion closing said opening and having a portion at its side opposite said arm portion engaging the side of said opening, said shell having another perforation, a portion of said arm coacting with said other perforation to retain said terminal pin assembly supported relative to said shell.

4. In an electric appliance having a heating element and a shell, 9. terminal assembly for said heating element comprising an arm portion and a dished terminal pin supporting portion having a peripheral flange, a portion of said flange opposite said arm being displaced whereby to form a yoke portion, said shell having a terminal pin opening, said yoke portion receiving the edge of said opening and said terminal pin supporting portion closing the opening, said shell having another perforation, a portion of said arm coacting with said other perforation to retain said terminal pin assembled relative to said shell.

5. In an electric appliance having a heating element and a shell, 2. terminal assembly for said heating element comprising an arm portion and a dished terminal pin supporting portion having a peripheral flange, a portion of said flange opposite said arm being displaced whereby to form a. yoke portion, said shell having a terminal pin opening, said yoke portion receiving the edge of said opening and said terminal pin supporting portion closing the opening, said shell having another perforation, a portion of said arm coacting with said other perforation to retain said terminal pin assembled relative to said shell, said yoke portion and said arm portion where they engage said shell being formed a greater distance apart than the distance between said portions of said shell, whereby to place said terminal pin. assembly under stress when it is assembled relative to said shell.

6. In an electric appliance having a heating element and a shell, a terminal assembly for said heating element comprising a T-shaped stamping having the leg thereof arranged at an angle relative to the plane of the arms thereof, a terminal pin supported by each of said arms, the top of said T-shaped stamping and the lower end of said leg engaging spaced parts of said shell under stress to support said terminal assembly relative to said shell.

7. In an electric appliance having a heating element and a shell, a terminal assembly for said'heating element comprising a stamping having a pair of portions arranged at an angle relative to each other, terminal pins supported by one of said portions, opposite ends of said terminal assembly having lugs, said shell having spaced perforations to coact with said lugs, the parts of said perforations with which said lugs coact being spaced closer together than the distance apart of said lugs, whereby said terminal assembly after coaction with said shell remains in coaction therewith under stress.

8, In an electric appliance having a heating element and a shell, 9. terminal assembly for said heating element comprising an arm portion and a terminal pin supporting portion, said shell having a terminal pin opening, said terminal pin supporting portion closing the opening, means at the edge of said terminal pin supporting portion for engaging the edge of said opening, said shell having another perforation, a portion of said arm coacting with said other perforation to retain. said terminal pin assembly relative to said shell in conjunction with said means engaging the edge of said terminal pin opening.

HOWARD A. SMITH.-