US1678310A - Smoothing iron - Google Patents

Description

H. S. WOODRUFF Jul 24, 1923.

SMOOTHING IRON Original Filed Jan. 1'7, 1925 2 Sheets-Sheet ATTORNEY.

July 24, 1928. mvssw H. s. WOODRUFF SMOOTHING IRON Original File n 17, 1 5 2 Sheets-Shee t 2 i I Q I 2 gay/gyro: 54 By f Q. W,

A TTOBNEY.

Patented July 24,1928.

, UNITED STATES I "1,678,310 7 PATENT OFFICE.

HENRY s. woonnurr, or" SCHENEGTADY, NEW YORK.

SMOOTHING IRON.

Application filed January 17, 1925, Serial No. 3,202. Renewed June 5, 1928.

This invention relates to smoothing irons and is herein shown as embodied in an electrically heated sad iron. I

An object of the invention is to provide an iron in which the heat is better distributed and more effectively utilized. Another object is to provide an iron which can be comfortably manipulated and which will be cooler to handle. Another Object is to provide a more satisfactory plug connection by which better electrical contact is established and by which the plug is better protected and less in the way; Still another object is to provide an iron which can be l5 quickly assembled and disassembled and which will require a minimum number of fastening devices for the parts.

To these ends and also to improve generally upon devices of the character indicated my invention consists in the various matters hereinafter described and claimed. Inthe drawings, Figure 1 is a side elevation of the iron, partly broken away.

Figure 2 is a top plan view of the body with its shell and other parts removed.

Figure 3 is a longitudinal vertical section.

Figure 4 is a horizontal section of parts of the handle on line 4-4 of Figure 3.

Figure 5 is a rear elevation and half sec-- tion of the connection plug. Figure 6 is a cross section on line 6-6 of Figure 2. he body of the iron is formed in two sections, one section comprising a sole plate 2 or tongue 4 at the front and the other sec tion comprisingfa block. 6 with. tapering walls 8 at its front end arranged to fit the sides ofthe tongue 4. The top face of the iron slopes downwardly to the rear and, as it has a tapering nose, it is of substantially uniform cross sectional area from front to rear. This increase in height where the iron I is narrow and the decrease in height where it is wide provides more equable distribution of heat and avoids the usual loss of heat from the nose portion where heat -is particularly desired. The lower section has a rabbet 10 around the outside to receive the lower edge of a shell or cover plate 12 which is elsewhere spaced from the body to provide a heat insulating spaceprotecting the handle and the hand of the user. The shell may be considered a part of the bod Between the two sections of the bod;l is clamped a heating unit 14 the coils of w 'ch with an upwardly pro ecting wedge portion are carried up to the front on both sides of 0f flowing upwardly directly to the handle goes to the upper section or block 6. This heat however is not lost because it is transmitted by the block 6 to the tongue 4 which conducts it to the nose of the iron where it is most' needed. Good contact between. the walls 8 and the tongue is assured by the following means. A bolt 16 is threaded into the sole plate at a slight angle to the vertical (or normal to the top face of thesection 6), this bolt projecting upwardly through a hole 18 in the section 6 and through a circular recess 20 at the top of section ,6. A nut 22 is threaded on the bolt in the recess and bears against the section 6 or against a washer which in turn rests on a shoulder 7 is of channel section, the rear arm 30 being wider and having wider flanges 31. The adjacent ends of the arms are recessed to fit the sides of a hollow nut 32 which is threaded" on the bolt 16. The edges of the flanges of the channelled armsare provided with hooks or spurs 34 and 36 arranged to project into slots formed in the shell or cover plate 12. The upper ends of the arms carry tubular projections 38' and 40 arranged to detachably engage cup shaped plates 42 and 44 set into recesses at the ends of the grip 26. Turning down the hollow nut 32 will obviously draw down the adjacent ends of the arms and cause the projections 38 and 40 to enter the ends of the grip and clamp it in place. With this construction the grip need not be weakened by boring it longitudinally fora long clamping bolt. The grip is inclined downwardly to the rear, thus giving a more natural and restful position for the wrist and hand. The rear arm 30, with its wide flanges 31, houses a connection plug 46, and preferably has a downturned portion 48 for detachable connection with the plug.

The plug 46 comprises a block of insulating material enclosed in a U-shaped metal ('aso 50. said case having a spring ton no 52 to snap under the downturned portlon 48 on arm 30 and a spring 54 to enter a slot 56 in the shell 12. Lead wires 58 from a cord 60 are secured to binding screws 62 set in recesses at the top of the plug 46 and these screws are electrically connected to terminal contacts 64', each contact comprising a curled portion 66 open towards the front of the iron and arranged to wi against corresponding contacts 68 carried y the body of' the iron. Contacts 68 are formed by loops at the ends of plates 70 which have theirlower ends 72 connected to the heating unit 14. The lates 70 are set in recesses of an insulating block 74 clamped in a recess 75 of the section 6 by screw bolts 76 and 78. WVhen applying the plug, the spring 54 is first let into its slot 56 and then the upper part of the plug is pushed forwardly into. locking engagement with the arm 30, the spring tongue 52 snapping under the portion 48 of arm 30. Thls action provides a Wiping contact between contacts 64 and 68 to insure good electrical connection. The terminal contacts areindependent of the means for holding the plug to the iron, and the spring 54 is far enough from the source of heat and has such a small area of contact with the iron that it holds its temper. The spring 54 keeps greater pressure on the contacts than is required to swing the plug into locking posi tion. The plug is protected by the flanges 31 on arm'SO of the handle and it allows the iron to be turned up on its heel when not in use and the usual stand for holding the iron can be dispensed with.

Although the invention has been'described by reference to a specific construcsection and an upper section, a heating unit,

secured between the sections, and a tongue projecting from one section and interlocking with the other section to conduct heat from one section to the other.

3. In an iron, a body comprising a lower section forming a sole plate with an upwardly projecting tongue at the front thereof, an upper section having its front end straddling the tongue, and a heating unit between the sections.

4. In an iron, a body comprising a lower section and an upper section, a tongue at the front of the lower section, said upper section having a slot to fit said tongue, and

means for holding said sections together.

5. In an iron, a body comprising a lower, section having an upwardly projecting wedge shaped tongue at the front, an upper section having a tapering slot to fitsaid tongue, and an inclined bolt connecting said sections.

6.- In an iron, .a body, and heating means I connected to a source of current, and a spring independent of said contacts for pressing said contacts together and connecting said plugto the body.

v8. In an iron, 9. body, a handle therefor, I

a heating unit secured to the body, electrical contacts connected to said heat ng unit, a connection plug having electrical contactsconnected to a source of current, a detachable connection between the plug and the handle, and. a spring carried by the plug for pressing said contacts to other and connecting said plug to the b0 y. 1

'9. In an iron, a body, a handle having an arm, a heating unit secured to the body, electrical contacts connected to said heating unit, a connection plug having electrical contacts connected to a source of current, a spring tongue on said plug to interlock with said handle arm, and a spring member carried by said plug and detachably connected to the body.

10. In an iron, a body, a handle having an arm, a heating unit secured to the body,

electrical contacts connected to said heating unit, a connection plug having electrical contacts connected to a source of current, said handle arm having side flanges embracing said plug, and means for securing said plug between said flanges.

11. ,In an iron, a body, a handle therefor, a heating unit secured to the body, electrical contacts connected tosaid heating unit and curled at their ends, a connection plug having electrical contacts connected to a source of current and curled at their ends to fit the first mentioned contacts, and means for effecting a wiping engagement of said contacts when attaching the plug.

In testimony whereof- I afiix'my signature.

HENRY s. WOODRUFF.

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