US822990A - Drying-chamber. - Google Patents

Description

PATENTED JUNE 12, 1906.

A. SGHRUDBR. DRYING CHAMBER. APPLICATION FILED AUG. 30, 1905.

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A. SGHRUDER. DRYING CHAMBER.

APPLICATION FILED AUG. 30, 1905.

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ADOLPH SCHRCDER, 'OF 'B'ERTJI'N, GERMANY, ASSIGNOR TO ALFRED LKRAUSE, OF BERLIN, GERMANY.

DRYING-CHAMBER.

.Specificationof Letters Patent.

-Applicati011 filed August 30, 1905.

.PatentedJune112,,1906.

Serial No. 277,278.

side walls and door, passes around the objects to be dried, and then escapes through the outlet-flue or chimney of the chamber.

The invention is illustrated in the accompanying drawings, in which Figure I is a vertical-section of the apparatus. Fig. I is an elevation of the door, partly in section. Fig. II is a vertical section taken-at right angles to Fig. I. Fig. III is a horizontal-section through 'Fig. I. Fig. IV is a plan of one of the trays. Fig. IV is a section through Fig. IV. Fig. V is -a plan viewillustrating the manner of disposal of the gas-pipes. 'Fig. VI is'aplan of the heat- Fig. VI is a frontelevation thereof. Fig. 'VI -is a side elevationthereof. Fig. VII is a detailsectional view drawn to'an enlarged scale and showing the manner in which the gas-pipes are secured below the heating-box.

The drying-ohamber consists of the lower portion 5, in-which the hot air for drying is produced, and the main portion or actual drying-chamber, which is surrounded by -hollowside walls 1 2 3'and a hollowdoor 4.

Both the hollow side walls land 2'and the hollow .door 4 are provided on the inner and outer walls with sliding dampers 24 25 26 27 33 34, having a number of perforations, so that by opening the inside dampers only the hot air employed for drying rushes directly into the interior chamber or oven, while by opening the outside dampers located opposlte these inside ones tempered air streams into the oven. By the provision of such dampers at various heights it is thus possible to introduce hot or tempered air to each zone of the drying-chamber, as desired.

The articles to be dried are placed upon the drying-trays 37, Fig. IV, and after the chamber-door has been opened are pushed onto ledges 35. These latter are of angleiron of U shape and their limbs, Fig. III, are secured'to the face of the side walls of the drying-chamber, while the third portion or,

base of the -U stands at a certain distance from the back wall of the chamber-and serves as a stop to prevent the trays from being pushed in too far. Inthis manner even large objects can'be placed in-the drying-ohamber. Owing to the distance between the ledgesand the back wall of the chamber, the vapors-arising during the drying process can pass off unobstructedly.

The hot-air generating apparatusb, Figs. I and VI, consists of two partsa bottom compartment 6 and an upper com artment 7. The former liesdi-rectly abovet e gas-pipes .20 21 2'2 23 and is provided on the right and left and in front with sliding dampers 4546 1-9, having each a number of perforations through which cold air canflow in. By a suitable arrangement of'baffle-pla'tes, Fig. I, in the said bottom part the air is always brought to the hottest parts ofthe base .and then flows through the apertures 15 1'6 '17, Fig. VI, into the distributing-compartment 7, where it is compelled by ribs 89 10.11 to flow, on the one hand, to the'hollowside-wa-lls 1 and "2 through the apertures 12 14 and, on the other hand, to the hollow double doors-4, Figs. IIa-nd VI, through the apertures'13.

The place .47 at which the *hotairrushes into the hollow double door 4, is provided with a sliding damper 48, presenting a .number of perforations, whereby when the door is opened by-operati-ng this-damper hot air may be prevented from escaping.

The method of arranging the gas-pipesZO to 23 below the heating-chamber 5 is'illustratedin detail in' Fig. VII. The pipes 20 to 23, which are furnished with two rowsof gasoutlet holes, are ad-justably supported by sorew-h0lders 38 andlie directly below the ridges or elevations 40 i 40, presented by the bottom of the heating-chamber 5. There is thus a space 43 left above the pipe, through which (since the gas-pipes are somewhat inclined in position) the vapors and heatinggases arising in combustion will readily flow off toward the hollow back wall 3. By this means, first, the cold air at 41 42 can readily flow along the entire length of the gas-pipe, and, second, the rearwardly-lying gas-jets are prevented from burning badly or failing to burn at all.

senting hot-air inlets and the outer walls ter.

As Fig. V shows, the gas-pipes are so arranged that those lying toward the center are shorter than the outer ones. The line 39 indicates the position of the front edge of the drying-chamber.

In the center of the hollow double door 4 there is a horizontal partition 32, from which two vertical partitions 3O 31 run downwardly at the right and left, so that the air leaving the heatingbox 5 is caused to flow directly to the top part of the door when the lower dampers are closed.

In the'actual heating-chamber between the ribs coarse metallic turnings, borings, or like shavings may be introduced for the purpose of increasing the surface. Such turnings or the like may also be introduced into the hollow side walls and double door to serve as fil- 44 is the chimney or outlet flue for spent air and vapors and waste gases.

Having thus described my invention, I

. claim as new and desire to secure by Letters Patent- 1. Adrying apparatus, comprising a chamber having hollow walls, the inner walls precold-air inlets at parts coincident with the hot-air inlets, perforated slides controlling such air-inlets, means at the bottom of the apparatus for heating the air which passes between the chamber-walls, and a spent-air and waste-gas outlet, substantially as described.

2. Adrying apparatus, comprising a chamber having a hollow-walled body and door, the inner walls of which body and door present hot-air inlets and the outer walls coldair inlets at parts coincident with the hot-air inlets, perforated slides controlling such in lets, means at the bottom of the apparatus for heating the air, which passes between the chamber-walls, and a spent-air and waste-gas outlet, substantially as described.

3. Adrying apparatus, comprising a chamher having a hollow-walled body and door, the inner walls of which body and door present hot-air inlets and the outer walls coldair inlets at parts coincident with the hot-air inlets, perforated slides controlling such inlets, a horizontal perforated partition dividing the space between the doorwalls and two vertical partitions exte'ndingdown'ward from the horizontal partition, means at the bottom of the apparatus for heating the air which passes between the chamber-walls, and a spent-air and Waste-gas outlet, sub stantially as described.

4. Adrying apparatus, comprising a chamber having a hollow-walled body and door, the inner walls of which body and door present hot-air inlets and the outer walls coldair inlets at parts coincident with the hot-air inlets, perforated slides controlling such inlets, superposed horizontal U-shaped frames secured to the inner side walls of the chamber, the base of the U standing free of the back wall, and trays adapted to lie on the frames, means at the bottom of the apparatus for heating the air which passes between the chamber-walls, and a spent-air and waste-gas outlet, substantially as described.

5. Adrying apparatus, comprising a chamber having a hollow-walled body and door, the inner walls of which body and door present hot-air inlets and the outer walls cold-air inlets at parts coincident with the hot-air in-' lets; perforated slides controlling such inlets, a heating-box at the bottom of the apparatus communicating with the spaces between the said body and door walls and presenting an upper distributing-compartment and a lower air-heating compartment communicating therewith and having cold-air inlets and an inclined ridged base; and gaspipes presenting laterally-directed jet-holes, located below the ridges in such a manner, that a space is left above thejets; and a spentair and waste-gas outlet, substantially as described.

6. A drying apparatus, comprising a chamber having hollow walls, the inner walls presenting hot-air inlets and the outer walls cold-air inlets at parts coincident with the hot-air inlets, perforated slides controlling such air-inlets, means at the bottom of the apparatus for heating the air which passes between the chamber-walls, metallic shavings packed in the space between the walls and a spent-air and waste-gas outlet, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

ADOLPI-I SCHRODER.

WVitnesses WOLDEMAR HAUPT, HENRY HASPER.

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