US1473897A - Leer - Google Patents

Description

11,473,897 1 G. w. BATCHELL I LEER Filed Nov. 10 1922 3 Sheets-Sheet 1 &

Nov. 13 1923. 11,473,897

cs. BATCHELL I\ INVENTUR Nov. 13 1923.

G. W. BATCHELL LEER Filed Nov.

3 Sheets-Sheet 5 Patented or. l3, 5;

tanner rnrnnr "carton.

f W. BATCEELL, OF WELE'URG, wnsr VIRGINIA.

Elm-

Application illed November 10, 1922. Serial lilo. %),0032

To all whom it may concern:

Be it known that I, GEORGE W. BAT- CHELL, a citizen of the United States, and a resident of Wellsbu-rg, in the county of Brooke and State of West Virginia, have made an Invention Appertaining to a Leer; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the characters of reference marked thereon, which form a part of this specification.

My invention has for its object to provide an ellicient leer that is heated by producer gas and whereinthe glass articles to be annealed are continuously but slowly carried through the leer. The invention particularly has for its object to produce a low temperature flame progressively in vicinity of the articles to be annealed as they are carried through the leer. The invention also has for its object other features and advantages which will appear from the followin description and uponexamina tion of t e drawings. v

The invention may be contained in leers of different forms, and leers to be used for diiierent purposes. To illustrate a practical application of the invention it have selected a leer containing the invention as an example of such structures, and shall describe it hereinafter, The leer selected is illustrated in the accompanying drawings.

Figure l is a side view of the leer. Fig. 2 is a longitudinal sectional view of the leer shown in Fi 1. Fig. 3 is a] transverse vertical section of the leer shown in the figures. Fig. 4 is a transverse horizontal section taken just below the top of the leer.

In the figures, 1 is a base or floor on which are located a plurality of supporting iron channel bars 2. r The leer 3 is built on the bars or beams 2 and is formed of The leer is heated byproducer gas and its construction is such as to cause the combustion of the gas to occur gradually and as the gas moves along over and under the artices as they are being carried by the apron a. The temperature of the flame is, moreover, maintained as low as can be produced in a producer gas flame and the pro gressive development of the flame causes the heat to extend over a large area and prevents localization of the heat. The leer is thus heated by a reducin flame and thus deterioration of the'fiues t rough which the flame is conducted, by reason of the flame, is prevented.

The producer gas is admitted through the burners 7. The flow of the gas is controlled by the valves 8 located in the passage- Ways 9 that communicate with the source of producer gas supply. A limited quantity of air is admitted through the annular open ings 10 that are formed between the ends of the jets or burners 7 and the curved pipes 11 and 12 that direct the burning gas into the leer. The pipe 11 is connected to a comparatively short box 13, the opening of the box through which connection is established with the pipe 11 being located near the bottom of the box. The inner side wall it of the box is heated by the flame as the flame spreads itself within the box 13 to enter the dues 15 that connect with the interior of the box 13. through openin formed near the upper edge of the insid: wall it of the box.

There are two fines 15 that connect the box 13 with the longer box 16 located on the opposite side of the leer. The fines 15 extend along the top and over the apron. The flame thus passes through the fines 15 and in close proximity to the articles on the apron of the leer. The flame passes into the box 16, where it again spreads through the interior of the box 16 and heats the walls thereof. It moves towards the delivery end of the leer and out through openings formed near the upper edge of the mner wall of the box 16 and is divided between the three flues 17 that convey the fle to the opposite side of the leer and through openin formed near the upper edge of the inside wall of the longest box 18.

Air inlet pipes 19 are connected to the box 16 opposite the ends of the dues 17. The

i 19.may also be provided with peep liolzg 20 through which the condition of the flame may be observed. The outer ends of the pipes 19 are curved downward so as to locate the end of the pipe in substantially a horizontal plane. The outer ends of the pipes are closed by the'dampers 21 which may be operated according to the conditions of the flame to admit the desired amount of air to cause the continued combustion of the gas at a desired rate and thus continue the flame in its course back and forth across the top of the leer.

When the gas enters the longest box 18 it distributes itself over the interior surfaces of the box 18 and again divides itself and passes out through openings located near the upper edge of the inside wall of the box 18. Itpasses throu h the four flues 22 and through openings ormed near the upper edge of the inside wall of the box 23. The box 18 is also provided with pipes 19 having the peep holes 20 and the dampers 21 whereb the condition of the flame may be further 0 served and the desired amount of air may be supplied to cause the consumption of the gas which is practically completed by the time the flame reaches the box 23. The

roducts of combustion then pass to the exaust flue 24, from whence they pass to the stack that produces the desired draft through the flues of the leer.

. By using an increasing number of flues to interconnect the boxes that form the side walls along the apron, the rate of movement of the gas, and consequently of the flame, is decreased progressively, which gives opportunity for the gas to be completely consumed by the flame as the flame moves towards the stack. v

The pipe 12 conveys the flame from its burners 7 through a similar arran ement of boxes and flues. The flame from tfle pipe 12 enters the box 25 throu h an opening formed near the upper side of the box and strikes the inside wall 26 of the box. The flame divides itself and passes through the two openin 27 formed near the lower edge of the Wa l 26, and thus divides itself between the two flues 28 and is conveyed to the box 29. It enters the box throu h two openings formed in the inner side wa 1 of the box 29 near the lower edge thereof. It then passes out through openings formed in the inner side wall near the lower edge thereof and near the delivery end of the Wall into the flues 30. It is conveyed bythe flues 30 be. neath and across the apron 4 to the box 31 and then throu h three openings formed near the lower side of the box 31 and through three flues 32 to the box 33. The delivery end of the box 33 is connected to the flue 34 which conveys the products of combustion to the stack. The boxes29 and 31 are also provided with the pipes 19 that have the peep holes 20 and the dampers 21 whereby the condition and progress of the flame may be 1,47a,ee7

observed and the flame continued back and forth across the bottom of the leer and beneath the apron. Thus the interior of the leer is heated by a flame that spreads itself substantially around-the apron. The flues in the boxes are preferably rectangular in cross section and formed of metal which increases the heat area and also by reason of their conductivity conveys all the heat of the flame to the interior of the leer. Thus very little of the heat of the as is lost to the stack since practically all 0 the heat units are utilized in the leer and are spread over a very large area. The articles to be annealed are thus uniformly heated as they are conveyed through the leer by the apron.

The pipes 19 having the peep holes 20 and the dampers 21 may be located opposite all ofthe ends of the flues that extend across the top and bottom of the leer for the purpose of observing the flame, but only the dampers of the pipes 19 located opposite the inlet ends of the flues are opened since the draft is in the desired direction to draw the air through the dampers to feed the required amount of oxygen to maintain the flame. Thus the oxygen of the air is fed to the flame as it progresses through the flues of the leer.

I claim:

' 1. In a leer, a plurality of flues, a gas inlet for permitting gas to enter the flues, the flues interconnectedto form a continuous passageway for the gas through the leer, a urner located at one end of the connected flues, air inlets located at the ends of the flues to draw the air into the flues in the direction that the flame from the burner is moving to maintain the flame and the combustion of the gas as it progresses through the flues.

2. In a leer, a plurality of flues, a gas inlet for permitting gas to enter the flues, the flues divided into sets of parallel connected flues, the sets of flues interconnected to form a continuous passageway for the gas through the leer, the number in each set increasing towards the stack end of the leer.

1 3. In a leer, a plurality of flues, a gas inlet for permitting gas to enter the flues, the

flues divided into sets of parallel connected flues, the sets of flues interconnected to form a continuous passageway for the gas through theleer, the number in each set increasing progressively towards the stack end of the leer.

4. In a leer, a plurality of flues, a gas inlet for permittin gas to enter the flues, the flues divided into sets of parallel connected flues, the sets of flues interconnected to form a continuous passageway for the gas through the leer, the number in each set increasing towards the stack end of the leer, air inlets located at the ends of the flues to permit the air to enter into the flues in the direction i lid,

' for connecting the dues and forming that the dame from the burner is moving to maintain flame and the hustion of the gas as it progresses through the dues.

In a leer, a plurality of fines extending across the top and bottom of the leer, boxes for connectin the fines and forming the side walls of the l eer, a gas inlet for permitting gas to enterthe fines; the flues being interconnected to the boxes to form a pair of continuous essageways for the gas through the top and ttom of the leer, a burner located at one end of each of the passageways passageways formed by the fines, air inlets located at the ends. of theilues to draw the air into the dues in the direction that the flame from the burner is moving to maintain the flame and the combustion of the gases. it new through the dues.

'. In a leer, a plurality of dues extending nor the top and bottom of the leer and divided into sets, the sets interconnected to form a pair of continuous paetvays for the gas through the leer, one at in top and the other at the bottom of the leer,- the minnher' of nee in each set increasing towards the stack and of the leer, boxes tor connecting the sets of dues and forming the side wall of the leer, a burner located at one end of each of the paweys.

8. In a leer, a plurality of dues extending across the top and bottom of the leer and divided into sets, the sets interconnected to form a pair of continuous passaways for the gas through the leer, one at t e top and the other at thehottom oi the leer, the numher of dues in each set increasing towards the stack end of the leer, boxes for connecting the sets of dues and fornii the side Walls of the leer, a burner located at one end of ch of the passaways, air inlets located at the ends of at dues to petthe air to enter into the du% in the direction that the flame from the burner is moving to maintain the dame and the comhnstion of. the gas as it progresses through the passagewa s.

n testimony whereof, l[ have herennth sied my name to this specification.

GEORGE W. BATGHELJL.

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