US1940626A - Laundry drier - Google Patents

Description

C. J. HOLUB LAUNDRY DRIER Dec. 19, 1933.

Filed April 29, 1931 s Sheets-Sheet 1 INVENTOR ATTORNE Y5 Dec. 19, 1933.

C. J. HOLUB LAUNDRY DRIER Filed April 29 1931 3 Sheets-Sheet 3 Patented Dec. 1 9, 1933- LAUNDRY DRIER Charles J. Holub, Columbus, Ohio, assignor to W. E. Lamneck Company, Columbus, 0hio,a

corporation of Ohio Application April 29, 1931. Serial No. 533,762 c 1 Claim. (01. s4-19) 1 This invention relates to improvements in.

laundry driers, particularly for home service, made of sheet and of knock-down construction so that the parts can 'be compacted for market- 5 ing and shipping and adapted to be interfitted or slipped together for simple and convenient assembly and erection, at the place for use, into a sturdy structure. U

The structure provides a compact heating unit, constituting a heater of elongated tubular radiator form for approximately the base area of the cabinet, enclosed orjacketed by a casing as the base for the cabinet with the casing of the heating unit separable from the cabinet, enabling the cabinet to be made of knock-dciwn construction; The cabinet provides an ample size drier compartment within which the laundry or wet clothing is suspended upon removable racks or bars, and the heater for circulating a constant supply of-fresh heated, air from the base of the cabinet, upwardly, through and about the wet clothing, escaping and carrying oil the moisture from the clothing, out, through openings in the top of the cabinet. A gas burner or heating element is disposed within a mani fold head of the tubularradiator of the'heater, under. thermostatic control, for automatically regulating and maintaining a definite drying manifold provided for connection with a vent flue. A heater enclosedor jacketed bya sheet metal, rectangular casing, as" a removableor separable base for the drier cabinet, with the parts of the heater securely joined togetherfand permanently mounted within the casing, preventingany leakage of gases or fumesfrom the heater into the drier cabinet which has its lower portion open to the heater. The-heater withits casing, as a unit complete ready for servicewhen the'fgas burner orheating element supply connections are. coupled to'a suppl yl line.

An object of the invention 151700 providea laundry drier cabinet, preferablyof knock-down construction, with a rigid shallow box-form of base occupied by a heater and theibase as a heating unit detachable from the cabinet,-;

Another object, of the invention is to provide cabinet to illustrate the means for adjusting the a heating unit, as. a base, for a laundry {drier cabinet, constituting a heater enclosed and jacketed by a rectangular sheet metal casing, the upper edges of the casing formed for making a slip joint connection'with the walls of the 0- cabinet, to detachably mount the cabinet upon the heating unit. l v v V Another object of the invention is to provide. a casingfor a base heating unitof a laundry I drier cabinet with a recessed end wall for sus- 5 taining and housing the fittings and appliances. for a gas burner or heating element within the body lineof thestructure; l V 5 Other features andadvantages relate to im provements in. details of construction, all of which will be more fully set forth in the description of theaccompanying drawings iormi ng a part/hereof, in Which:

Figure 1 is a perspective view, of'the improved laundry drier, with a portion at the lower end broken away to disclose the, face plate of the firebox 1 Figure 2 is an enlarged sectional view of the end wall portion' of the heating unit as they base, of the drier cabinet and the joint connecting; so

the base with a wall of the cabinet thereabove.

Figure 3 is an enlarged horizontal sectionq through a corner of the cabinet,

Figure 4 is an enlarged horizontal section through a joint strip under and connecting sheet 55 sections of the rear Wall of the cabinet;

Figure 5 is an enlarged vertical section through ,a corner of the lower portion of the legs, v V r Figure-6 is a v:front elevationg-roi the cabinet with the front doors removed and with the base 7 heating unit in section.

-. Figure 7 is a top plan view of the heating 7 unit or base, with a portion broken away to il-' it lustrate the burner Within a combustion cham-' her or box at one end of the unit.

- Figure 8 is a section on line 8 8, Figure of the cabinet. 1

liigure 9 is a sectionon line 99, Figurefi,

of the heating unit. 1 v

Figure 10'is a section on line 10- -10, Figure 5. ,Figurell is a cross section of a modified form of cabinet corner post.

The structureof the-cabinetiproviding the drier compartment corresponds to the construction of laundry drier illustrated and described in Letters Patent No. 1,550,700, to C, J; Holub,

August 25, 1925, particularly as to its knocke down characteristics, corner post construction" and method of detachably joining the sheet metal walls to the posts.

The present embodiment provides a base heating unit separable from the cabinet with the heater and its parts rigidly and securely mounted within the casing of the base unit, instead of knock-down as featured in said patent, although in general principle is similar.

The upper unit or cabinet which provides the drying compartment for the clothes preferably comprises sheet metal end walls 1, 2 and rear wall 3 as substantially plane sheets engagedor slipped into grooves or chanels formed in the corner posts 4, each post being made of a sheet metal blank bent into angle bar shape. The limbs of the bar, at their outer longitudinal ends, are reversely bent upon themselves, each to provide a channel 5, with thechannel opening outwardly and forming a slip jointto receive the marginal edge of a wall or metal sheet. The double lap bend for the edges of the limbs of the joints adds rigidity to the post structure,

buckling of the sheets.

width and height of the cabinet.

. vided with suitable racks removably supporting aside from providing slip joints for removably joining the walls to the posts under sufficient frictional contact to effect a proper seal and to accommodatefor contraction and expansion of the metal of the walls to avoid warping or With the edges of the sheets forming the walls of the cabinet merely socketed into the channels of the posts, no bending or machining of the sheets'is required for jointing, reducing the cost of manufacture, avoids injury to the galvanizing coating of the metal and facilitates in assembling or disassembling'the parts.

Owing to the width of the cabinet, the rear Wall 3,'is made up of several panels or sheets and the panels joined together bya channel bar 6, comprising, a sheet'metal blankbent upon itself into T-form, to provide acentral reinforcing rib '7, longitudinally of the bar and a pair of oppositely disposed and aligned limbs 88 each formed with a longitudinal channel into which the opposing ends of two sheets or panels are respectively slipped, forming a joint similar to that of the posts.

The front of the cabinet is furnished with a pair of doors affording" an opening for the full A top wall section 9 for'the front of the cabinet above the doors, has its opposite longitudinal endsengaged with the front corner posts and its lower longitudinal margin is offset inwardly, giving rigidity to the wall and provides a stop for the doors.

The upper ends of the walls of the cabinet are bent to receive and secure a cover or top 10 of tray or box-form, apertured along itslower margins to provide vent openings. The tray or box construction of the top makes it very rigid and when connected with walls holds the cabinet square. The interior of the cabinet is pro rods upon'which the clothes are sustained for drying.

The lower end of the walls of the cabinet extend slightly below the lower ends of the corner posts for makingv a slip-joint connection with the upper edge ofthe walls of the heater casing 11. The joint or connection being substantially as for the walls with thecorner posts.

The casing 11 of the heater unit is of double wall structure for the front, rear and one of the end walls, each consisting of an outer wall 12 having an inturned flange 13 along its lower longitudinaledge to which a base plate and in ner wall are riveted. The upper longitudinal edge of the outer wall 12 is bent upon itself with several reverse bends forming a pair of channels 14:, 15 and an inturned double ply lateral flange 16 at the base of the reverse bends serving as a ledge for a screen tray 17 as a bottom for the cabinet to. guard against any of the clothing which may fall from the; racks or dropped, from coming in direct contact with the heater or highly heated surfaces and thereby scorched or burned.

The channel 15 formed by the crimping of the upper longitudinal margin of the outer wall forms a socket: for frictionally engaging the lower protruding edge of a wall of the cabinet for removably connecting the cabinet with the heater. casing, and the second channel 14, of a seam for joining'the upper angle flanged end 19 of the inner wall 18. (See Figure 2.) The inner wall 18 along its lower longitudinal margin is bent toform a lateralflange 20 registering with the inturned flange 13 of the outer wall and riveted thereto with the base plate-.21 for the heater casing intermediate thereof! Flanging the opposite longitudinal margins of the inner wall reinforces the-same andprovides for definitely spacing the inner and outer walls.

The ends of the double wall sides of the heater casing are mitered and connected at each-corner by an angle bar 22 bearing against the inside surface of adjoining outer walls. Each corner of the heater casing has an angle bar 23 at the outside thereof and of a length to protrude beyond both upper and lower ends of the casing with the'lower projecting portion of the angle or'corner bar 23 serving as a leg and the upper'projecting end of the bar for connecting the cabinet to the heater casing. The parts are connected by bolts 24 with provision made for vertically adjusting the outer angle bar 23 for "varying its leg height. The corners are reinforced providing a very sturdy structure. I

One end of'the heater casing has a single wall 25bent to recess the same within the casing and at its outer side carries a cast metal faceplate 26 having an inwardly extending snout 2'? leading into the fire box, or burner chamberpofthe heater, and a door 28 therefor. The end wall 25 about the face plate is perforated furnishing 7 air intake openings for the interior of the heater casing and cabinet.

The heater in principle is similar to that dis- 7 closed in the aforesaid patent although not of knock-down type, the parts being preferably, rigidly connected to more effectively prevent the escapeof gas or fumes into the heater chamber and cabinet. The heater is permanently mounted within the heater casing and as a unit as separable or detachable from the cabinet.

, The heater comprises a plurality of radiator tubes 28' arranged in superposed sets, all relatively spaced from one another and longitudi nally inclined upwardly from their forward ends, withtheir opposite ends respectively conmeeting with sheet metal rectangular or box form manifold casings 29, 30. The manifold 29 for the forward end of the radiator tubes provides a burner or combustion chamber for the heater with its front wall spaced slightly from the front-wall25 of the heat casing, and its base wall-spaced or elevated from the base plate 21 of the heat casing. 1

A gas burner 31-is mounted within the lower portion of the front manifold 29' having its" inlilo take or mixing tube 32 extending horizontally forward therefrom and through the front wall of'the manifold, casing wall and face plate 26 connecting with the gas supply piping 33 in front of the face plate. The gas piping 33 has connections interposed therein for a pilot burner and thermostat valve 34, the valve 34 having its thermal tube extending into the heater casing immediately above the heater manifold 29.

The interior of the heater manifold 29 is provided with a pair of horizontal superposed baffles 35, 35, the upper thereof overreaching the lower, and the lower provides a partition between the inlet ends of the upper and lower sets of radiator tubes. The heat from the rear portion of the gas burner is diverted into the lower set of radiator tubes, while the heat from the forward portionof the burner is directed into the upper set of radiator tubes.

A pair of heat deflector or baflie plates 36, 36, recessedwithin the top of the heater casing,

- one extending over the forward end of the heater, the second over the rear portion of the heater, protect the highly heated portions of the heater from being directly exposed to the lower portion of the interior of the cabinet, and intermediately provide an opening leading into the cabinet. The heated air from the chamber about the heater is directed into the center of the cabinet for effecting-a more even distribution of temperature through the entire cabinet. The air is admittedjinto the heating chamber through an opening in the bottom 21 at the left end below the manifold 30.

The walls of the rear manifold 30 connect with the outer wall of the double walled end of the heater casing, and the manifold connects with a vent flue pipe 37 extending vertically with the cabinet for connection with a chimney flueof a building.

The thermostat valve 34 is of commercial type 1 and serves for an automatic gas control for the gas burner and regulation of the drying temperature within the cabinet and can be set for connected ready for coupling to a gas supply line, of great advantage in a household appliance as it facilitates and simplifies its installation.

Air, for circulation through the cabinet is also,

admitted through the perforations in the recessed end wall 25 of the heater casing. The

air admitted into. the heating chamber thus passes over and about the heat radiating surfaces of the heater, and thence upwardly through the central opening formed by the baffies 36, 36'into the cabinet and escaping through the perforations in the top. Thereby a constant supply of fresh, heated dry air is fur-'- nished from below the cabinet and circulated upwardly about and through the wet clothing suspended within the cabinet, absorbing the as heretofore described, constituting a strip of sheet metal bent into angle bar shape with the longitudinal ends or outer margins of the limbs each reversely bent upon itself in a double lap the outer for the reception of the marginal edge inner, for the reception of the marginal edge of a sheet metal strip 38, thestrip 38 is of a form to provide a cross brace for the limbs of the posts or bar with the ends ofthe strip respectivelysocketed into the laps at the ends of the" limbs, the brace stiffens the limbs so that they cannot be flexed under the weight of the doors. l V

Having described my invention, I claim:-- A laundry drier, comprising, a sheet metal cabinet, a heating unit for the base of the cabinet providing a sheet metal casing secured to the cabinet, a heater mounted within the casing and jacketed thereby, the casing having a recessed end wall forhousing and supporting the fittings and appliances for a heating element of the heater within the confines of the heater casing. 7

- CHARLES J. I-IOLUB.

providing a pair of adjacent channels, one as of a panel sheet or the like, and the second or

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