US973011A - Gas-heated sad-iron. - Google Patents

Description

A. H. DAVIES. GAS HEATBD SAD IRON.

APPLIUATIOH FILED JARA, 1910.

Patented Oct. 18, 1910.

citizen -of the United States, residin Akron, in the county of Summitand tate ED 'STATES PA l i l AZIILFIBED H. DAVIES, OF-AKRON, OHIO.

Toul-Z whom 'it may concern: Be it known that I, ALFRED H. DAvms, a at of- Ohio, have invented a new'and' useful f Gas-Heated ySad-Iron, of which the followiing is a -s cication. s nas cated sad-irons it isa well known fact t at it isi-not difficult to:obtain. the necessary heat'in the iron itself. Some'of' the principal `diflicsulties, however, lare the reguv lation or control ofthe heat in the iron, provision for proper' combustion, the consumption of the minimum amount of gas, and the 1.

elicient thermal insulation of the iron body from the flexible gas supply tube, the mixer,

Y andthe handle.

My invention relatesito improvements in the construction of sad-irons of theclass mentioned, the objects of the improvement being to more perfectly control the heat in the lron, to improve combustion and at the gas sup lying tube and mixer as Well as the handle om the heat of the iron body. I attain these objects by the construction illustrated in the acco Which- Y panying drawing, in

Figure 1 is a longitudinal vertical section on-thefmedian lineillustrating an iron em-k bodying my invented improvements. Fig. 2 islan underside view .of the cover plate. Fig. 3 is a fragmentary view, the same being a transverse vertical section on the line 3 3 of Fig. 1. Fig. 4 is a fragmentary view, the same being a horizontal section throu h porofthe iron.

Throu hout the several views similar nu- Inerals o? reference indicate similar parts.v

The numeral 1 indicates the hollow body of the iron, which is open at the top, the

cover plate: 2 being adapted to close said opening. Each of the -two sides-of the body 1 yis provided at the top with an' elongated recess at 3, said recess extending the greater portion of the length of said` side. The cover plate 2 is provided with integral portions 4, which with said cover plate constitute exhaust iues extending from the outer edges of said cover plate toward the centerthereof.4 The recesses at the to of the, sides are adapted toaccommodate tiie portions 4, as illustrated in Figs. land 3. The purpose of providing elongated ues extending along the greater gas,

i Speoication of'Letters Patent. Patented Oct.. 18, 1910.

pplio'ation vled January 4, 1910. Serial No.

ing an uninterrupted'passage for the exhaust of the burned gases is to permit the free and unmulled play of saidgases within said iron', and to dlstrlbute as much aspossible the heat of said gases.- The advantage of a continuous flue over a series of flues or 'apertures will thus be readily ap' arent. The purpose of the-arrangement of t e portions 4 extending toward the center of the cover plate is to produce a bi-lateral distribution of the flame from the burner and a circulatory movement of the heated gases before being` exhausted, thesinle, elongated flue on each side of the iron bo y permitting such circulatory movement without the hindrance produced where longitudinal movement of the gase'swithin said body is necessary 'before exhausting. The cover plate is attached to the body of the iron by means of the screws 5 or'their equivalents. i

The rear end of the Yiron body is provided withv adouble wall `portion formed by the inner-wall 6- and the outer wall 7, the air space'8 being thus. provided. The said air 1 space may extend from side to side of the iron or fora portion only of that distance, the latter construction being illustrated in the drawings. Near the bottom of the iron body the said space 8 opens exteriorly at 9, said opening being adapted to permit the entrance of air into the space 8 in the vbottom thereof. The space 8 at the top is continuous with a transversely,-elon gated aperture 10 in the cover plate, thus providing for the exhaust of air from the space 8 at the top thereof.

The burner 11 may be of .an suitable construction, the preferableform eing that portionl of the sides Aof the iron and providillustrated in the drawings, which consists of a` tube closed at the forward end, provided with transvcrse slits 12 on the underside of the same, and the rear end provided with screw threads by which the said tube may be screwed through a screw threaded `aperture in the wall 6, into a similarly screw threaded aperture in the wall 7, as illustratedin Figs. land 4E. It will thus be seen that saidburner will extendfrom the exterior. of the iron at the rear end through the s ace 8 into the interior of the hollow iron ody.

The mixer 13 is attached exteriorlyA to the rear end-of the iron by means ofthe 'screws 14 4or their equivalents, a strip of asbestos or other thermal insulating material 15 be range ing interposed between the iron body and the said mixer. Communication with the interior of the burner 11 is provided and an adjustable shutter 16 of ordinary construction may be-employed for the purpose of controlling the amount of air admitted to the mixer. At a point opposite the aperture leadin from the mixer to the burner is ara needle valve comprising a valve casing 17 and a needle 18 provided with a point adapted to tit within the interior of said casin in the usual manner, the other end of said needle being provided with screw threads for adjustment of said needle within the casing 17 and a slot 19 into which a JScrew driver or other instrument `may be inserted for the purpose of making such adjustment. The integral lateral portion 20 of the valve casing constitutingthe gas conductor from the iexible supply tube 21 to theneedle valve proper is provided at its end with external screw threads, while the collar 22 is provided with internal screw threads adapted Jfor engagement therewith, said collar 22 yserving to hold in place ,the nipple 23 to which the tube 21 is connected.

. Wound about the tube 21 in a s iral manner is a protecting wire 24 adapte to prevent injury of the tube 21, to revent kinking of said tube, and the end o said wire extendin about the lateral portion 20 and wound tig tly thereon to assist in holding the .tube 21 properly in place'upon the nipple 23. In use the gas w1ll enter the mixer through the needle valve, be mixed with the proper amount of air and projected into the burner 11 whence it will be delivered through the slits 12, forming a bi-lateral sheetof flame impinging primarily upon the bottom of the air. The asbestos insulation being between the relatively cool wall 55 iron body, secondly upon the sides'of said body, thirdly upon the undersides of the portions f1, and finally exhausting through the ues formed by said portions, thus comleting a circulatory movement well adapted or the thorough'utilization ofthe heat of the flame.

Bysreason of the space 8 the wall 7 lwill remain cooler than the wall 6, while the circulation of the air in said 'space will further aid in cooling the wall 7 as well as the rear end of the burner, the apertures 'at 9 and 10 providing free inlet and outlet of imposed andthe mixer -13 will further protect said mixer from the heat of lthe iron body and as a result the said mixer will be sutiiciently cool to be conveniently adjusted while the tube 21 will not be injured by reason of4 over heated connections.

Upon the top of the cover plate 2 is arranged the shield 25 provided with the integ'ral downwardly disposed-lugs 26 adapted to entercorresponding dents in the cover plate, there being three lugs .upon each 'the upper shield. The second shield 27k is provided with integral lugs 28 similarly arranged in dents in the upper surface of the shield 25. The screw 29 or its Aequivalent extends through the cover plate 2, the shield25 and the shield `27 for the purpose offastening thesaid plate and shields firmly together.

Formed integrally with the shield 27 yare the spaced handle arms` 30 between which is 'arranged a Vhandle 31 connected tosaid' arms by means of the screw 32 or its equivalent. Tlie obvious purpose'of the shields 25v and 27 and their arrangement with air space between the shield 25 and thejplate 2 and between the shield 27 and the shield 25 is to prevent the over-heating o'tt the portion of the device closest tothe handle 31, thereby permitting the operator to use the iron with-l out inconvenience or harm.

I claimt-l -4 1. A gas heated sad-iron comprising a hol-A low body open at thetop, a cover plate,-I adapted to close said opening, the 'sides of f said body provided at their top edges with elongated recesses, each recess extending for the greater portion of the length of the side,

said cover plate provided with integral exhaust tlues extending from the outer edges ot the cover plate toward the center thereof, said recesses adapted to accommodate said rear end of said body, said walls having an air space between, the said space. opening exteriorly at the bottom through said outer wall, said cover plate provided with a transversely elongated aperture lregistering with extending rom the `exterior of said outer wall across said air space through said inner wall and through the interior of said iron body and means connected to said outer wall for conductin a mixture of gas and air intoV the interior o said burner. v

2. A gas heated sad iron comprising a hollow iron body open at the top, a cover plate adapted to close said opening, the sides of said body provided at their top edges ,with elongated recesses, each recess lextendlength ofI ing for the greater lportion of the the side, 'said covervplate provided with integral exhaust ues extending fromI the outer edges 'of said cover plate toward the center thereof, said recesses adapted to receive said flues, an inner wall and an outer wall at the A l rear end of said body, said walls having lan* air space between them, said space openingA exteriorly at the bottom through said outer wall, saidcover late provided with a transopening of said air space, a burner Y fines, an inner wall 'and an outer wall at lthe versely elongatey .aperture registering with the upper o ening of said air s ace, a burner extending om said outer wa across said air space, through said inner walland into the interior of saidv -iron body, a nixer'attachedexteriorly to4 said outer -wall and prov vided with-an aperture formingcommunlcaisc tion with the interior fof said burner and land extending from the outer sides of said body inwardly, an' inner wall and an outer Wall at the rear end of said body, said walls having anfairl space between them, said space having air inlet and outlet openings, a burner on theinside of said body and means'connected to said outer wall orconducting gas into the interior of said burner.

4. In a device-of the character described, a hollow iron body provided with an in- `ternal burner,4 said body having spaced walls, the space between said walls being adapted to permit the passage of air between them, said space providedv withY air inlet and voutlet openings and gas conducting means attached to the outer wall and adapted to conduct gas into said burner.

In testimony that ',I claim the above, I

have hereunto subscribed my name inthe l Y presence of two witnesses.

ALFRED'H DAVIEs.

- Witnesses:

W. OLIVER WISE, LoUIsE CUTLER. p

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