US664751A - Portable heater. - Google Patents

Portable heater. Download PDF


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US664751A US90600A US1900000906A US664751A US 664751 A US664751 A US 664751A US 90600 A US90600 A US 90600A US 1900000906 A US1900000906 A US 1900000906A US 664751 A US664751 A US 664751A
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James L Hollingsworth
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James L Hollingsworth
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    • F24H3/00Air heaters having heat generating means
    • F24H3/02Air heaters having heat generating means with forced circulation
    • F24H3/04Air heaters having heat generating means with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
    • F24H3/0488Air heaters having heat generating means with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using fluid combustibles


Patented Dec. 25, I900.
(Application filed Jan. 9, 1900.)
(No Model.)
WITNESSES n A 77'0HNEYS drying barns or kilns, and in its more generic vtion-chamber 1, which merges with the sup- Usrrnn g ra'rns JAMES L. HOLLINGSWORTH,
SIEECIFICATIGN forming part of Letters Patent No. 66 M751, dated December- 25', I EOO.
Application filed January 9, 1900. Serial No. 906 (N0 model.)
To all whom it nuty concern:
Be it known that 1, JAMES L. HOLLINGS WORTH, residing at Newborn, in the county of Dyer and State of Tennessee, have invented certain newand useful Improvements in Po table Heaters, of which the following is a specification.
This invention relates to improvements in portable heaters of that kind especially adapted for use in tobacco, lumber, grain, or fruit nature comprehends a novel construction of parts embodying a suitable caster-mounted heater-body having means connected there with for creating a forced or natural draft and having adjustable devices mounted thereon and movable therewith for producing a continuous-draft circulation, whereby a more complete and increased combustion is obtainable with a minimum consumption of fuel, said construction of parts also including a simple, novel, and peculiarly arranged means for creating a commingling of air with the products of combustion and adapted to operate in such a manner that thecombined mass t'. e., the induced air and products of combustionis mixed and discharged back in the firechamber and consumed.
The invention consists in the novel combinations and arrangement of parts above referred to'and as will be hereinafter first described and then claimed, reference being had to the accompanying drawings,in which-.- Figure 1 is a vertical section of myimpro ved heater. Fig. 2 is a detail sectional view of the float valve device hereinafter referred to. Fig. 3 is a detail View hereinafter referred to. In its preferred construction my improved heater is made of sheet or cast metai and comprises a rectangular-shaped body 1, mounted upon casters 2 to facilitate the movement of the heater, especially when used for drying purposes.
The heater-body 1 has a lower or ash-pit compartment 1, a fire-pot 1 and a combusplemental combustion chamber P, which forms practically a continuation of the chamber 1, said chamber l tapering conically toward the main oiftake or draft pipe 3, which is provided with an olTtake-valve 4 at its lower end and a spark-arrester diaphragm 5 at a suitable point above the valve 4. At a point between the valve 4 and the diaphragm 5 the pipe has one or more air-inlets 3 ar ranged in the same horizontal plane, the area of which may be increased, or the said inlets cut ofi entirely by means of an adjustable hood 6, the purpose of which will presently be more fully explained.
The fire-pot in practice has the usual feedopening and door, (indicated by dotted lines in Fig. 1.) v
In its complete construction my improved heater is equippediwith a series of continuously-coiled pipes 10, the coils of which are arranged in horizontal rows and extend the full width of the combustion-chamber, the lower legs of the series being disposed just over and forming, as it were, the crown of the fire-pot, while the upper ends of the said series of pipes terminate at the base of the upper or supplemental combustion-chamber, as clearly shown in Fig. 1. All of the lower ends of the pipes 10 project through the body 1 and communicate with the air-duct 11, while the upper ends of all of the said pipes discharge into air-collecting spaces 12, with which an airconveyor flue 13 connects and which in prac- Y tice is connected with the hot-air-circulating pipes disseminated within the drying house or kiln and which may be arranged in any suitable manner.
In my construction of heater the grate of the fire-pot is composed of a. series of airpipes 14, which project through the sides of the body 1 and have one end communicating with the air-space 11, while their opposite ends communicate with a duct 15, which in turn communicates through the-pipe 16 with the air-duct 12, that discharges into the airconveyer flue 13, as clearly shown in Fig. 1.
To maintain an air circulation through the pipes 10, 14, 16, and 13, a suitable blower 17 is provided, driven by any suitable means, the outlet-pipe 17 of which discharges into the air-collecting space 11.
18' indicates a smoke-flue which connects with the combustion-chamber l at a point below the valve 4 of the main ofttake 3, and while I have not shown it in this application this flue 18 merges. with the air-conveyor pipe 13, the two in practice being continued into a distributing-pipe section 13, which through of this invention.
29 indicates aclosed jacket that surrounds the body 1, which forms a water-space, and which space hasa feed-opening 29 in the top and an outlet with which a valve-pipe3O con. nectsand which has an injection-nozzle dis charging into the air-'ofitakepipe 13;
By providing awater-jacketsurrounding the heater-body 1 and.- connecting the saidwater-jacketwith the air-ofitake 13 I provide a hu'mid'izing means which can'- be utilized toeither humidi e. the atmosphere'of' a room heated by directradiation from the heater or forliuln'idizing thehot-air that passesfrom' the said heater, it being understood'that the 'vawe 3 ,-bei'n'g atwo'fway valve-when turned in one direction", will lead oi? the moistened air froin' the jacket into theroom and when turned in the other direction will discharge it into the pipe 13".-
This hnmidizing femrewenders my hirestion' particularly[uhialfirl in the treatment of tobacco; v this 'feature of my invention, together" with the manner of arranging the coiled air pipes 10; the supplemental otftalte 18", and the pipe 13;-forms the subjectm'atter of--my Patent No: 6 t8,259'-,-da ted A'p'ril 14 1 900."
In the-use of heaters for-"1cm ber; tobacco,- aud fruit drying barns orkilns it isat times essential that the prod uctsof'eomeustion be thoroughly controlled, so as to' avoiddanger of fire and alsoto increase -theidraft and ca paeity of the heater. For thispu-rpose I equip myimproved form of heater with a simple and novel arrangement or smokereturning de- .vices and means for creatihg'a forced draft. For this purpose the heater-body at one side hasprojectiugbrackets 22, in'which is fixedly held adownwardly-tape'ring-pipe'23, the lower end of which is-detachably fitted upon the discharge of aiblower 245,.as clearly shown in Fig. 3. In practice the said blower'24 may be belted to the blower 17 or may be separately driven by any suitable power it being understood that when it is arranged to be driven by'the'shaft of the blowerl'lit can be readily disconnected and held inert by slipping on the belt25. The upper end of the pipe 23 is formed with a collar or seat 23*,having an an li'ularrim- 23", and upon this seat-rim is pivotally supported an elbow 26, held .upon
' thepipe'23, to swing in a horizontal plane, as
indic'ated-in'dotted lines in Fig. 1, and to provide a simple means for adjusting the said elbow'26 a handle member 27 is pe'ndently so- It should be stated, however, that cured to the elbow, by the manipulation of which the said elbow may be turned to or from connection with the pipe-section 3, it being understood that when turned in connection with the pipe-section 3 the coincident ends of the pipe 3 and the elbow may be secured from separating by any'suitable clamp devices. (Not shown.) The blower 24 has an outlet-pipe 24, which discharges into an airspace 28, with which one end of a series of perforated pipes 28 communicate. These pipes 28 are horizontally disposed below the grate-pipes and their perforations are arranged tod'ischarg'e between the grate-pipes.
By providing the heater with means for creating a forcedd'raft s'uch as described, the icapacity' tlierebfi can be'increased at will, this being particularly es'se'ntial when the heater" istobe used for drying purposes wheretherfl 7 heat volume must be'under'easy'c'onirol and capable of being quickly'inereaseif or dinfih ished, as the character of the articles to be dried may make necessaries wear as the,
products of combustion controlled to'prevent their p'a'ssirig'out at pointswhe'r'etheir"natu raldissemination might prove dangerou's.
air-inlets and an adjustable sleeve for ooh trolling thesize" of the-inlets it} is obvious'that when the elbow 26- is turned over, so' as Fm theri'noreflj roviding an offta'kepipe 3 with; g V
provide for drawing the prcducts'ot c'ombriistion oath into-the fire-"pot; thesh-id-prod lict's of combustion" can be co'm'min gled withiatt mosph'eri'o aliifiasf may desired; and. the draftthereby notonly' increasedgbu t the eon roo mingling-of the'airwith the product's-of co'u'1'-'- lv bustion causing aquicker andmore erfect; consu m ption thereof as theypass iiit'o the fire pct.-
drier; the valve 4 is closed and tremors caused to pass- 0%! into the pipe 18. Whenthis is the" case,- itisobvious the hot airwhi'cli passes'out through the pipe 13 will aet as it suction tiodra'wthe smoke-from'the fire-chamher into the pipe-1'8 HEITfI-flbffl' it intethepipe 7 13 and throughthe disseminating pipes with'-' in the kiln orbarn.
By providing a swinging elbow member adapted to close over and form a continue tion of the smoke-pipe 3 it is'obvious-that should it 'be" desired to create a quick and powerful draft when the main flue-valve 4a is opened and the valve 18 in the pipe 18 is closed it is only necessary toswiug the elb'owm'ember 26 over and bring its mouth in a line with the outlet of the'ofitakepipe 3, and r thereby not alone provide for a quick and powerful direct draft for the heater, but also for returning the" products of combustion back under and into the fire-pot,-such arrange ment of my invention being particularly. d'e-.
sirable when it i's'to be used as a'hot-air gen orator for heating or drying purposes.
obvious that should at any time it be desiredto create a quick and powerful combustion the main flue-valve 4 can be opened and a By providing a swinging elbow memberitis':
suction-draft secured, which also serves as a means for passing the products of combustion back in the fire-pot, this being particularly desirable when the device is used to generate hot air forheating and drying purposes.
When used for heating tobacco, after the tobacco has been smoked and hot-air dried the fire can be quickly banked or drawn and cold air moistened by reason of the escape of the vapor into the water-jacket 29 can be quickly charged into the barn and the tobacco fixed by proper humidization without atmospheric humidization, as is ordinarily done.
I am aware that it is not new to provide means for returning the products of combustion back into the fire-pot, and I make broadly no claim for such construction. My invention difierentiates from what has heretofore been done in this line, so far as I know, in that I provide a portable heating apparatus by which the heat can be quickly generated for drying purposes or the smoke can be deflected and used for smoke drying, the cooperative arrangement of the valved pipe 3, the swinging elbow 26, and the valved pipe 18 being such that the apparatus can be quickly set up for its diiferent uses without changing the parts thereof further than swinging the elbow 26 and adjusting the valves 18 and 4.
Having thus described my invention, What I claim, and desire to secure by Letters Patent, is-
An improved heating apparatus for the purposes specified, comprising in combination a heater having a hot-air outlet, the upper end of the heater having a valved oiftake for the direct draft, and a supplemental valved smoke-outlet communicating with the hot-air outlet, the upper end of the direct outlet having a seat and suction flue support upon the bed of the heater, a blast-fan communicating with the said flue, the upperend of the flue having a seat portion, and the elbow-section 26, forming a part of the flue mounted upon the upper end of the suctionfiue portion supported upon the bed of the heater, the free end of the said elbow being shaped to engage with the seat of the main draft-pipe 3, said elbowsection having a pendent handle for turning it, all being arranged substantially as shown and described.
US90600A 1900-01-09 1900-01-09 Portable heater. Expired - Lifetime US664751A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2524272A (en) * 1946-08-22 1950-10-03 Steiner Ives Co Direct gas-fired oven
US2524288A (en) * 1948-04-07 1950-10-03 Gonzalez Luis Diaz Heating system
US2725224A (en) * 1953-05-11 1955-11-29 Albert R Pierce Dry kiln apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2524272A (en) * 1946-08-22 1950-10-03 Steiner Ives Co Direct gas-fired oven
US2524288A (en) * 1948-04-07 1950-10-03 Gonzalez Luis Diaz Heating system
US2725224A (en) * 1953-05-11 1955-11-29 Albert R Pierce Dry kiln apparatus

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