US30957A - Improved steam-boiler - Google Patents

Improved steam-boiler Download PDF

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US30957A
US30957A US30957DA US30957A US 30957 A US30957 A US 30957A US 30957D A US30957D A US 30957DA US 30957 A US30957 A US 30957A
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boiler
sheet
crown
tubes
fire
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22STEAM GENERATION
    • F22BMETHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B9/00Steam boilers of fire-tube type, i.e. the flue gas from a combustion chamber outside the boiler body flowing through tubes built-in in the boiler body
    • F22B9/02Steam boilers of fire-tube type, i.e. the flue gas from a combustion chamber outside the boiler body flowing through tubes built-in in the boiler body the boiler body being disposed upright, e.g. above the combustion chamber
    • F22B9/08Steam boilers of fire-tube type, i.e. the flue gas from a combustion chamber outside the boiler body flowing through tubes built-in in the boiler body the boiler body being disposed upright, e.g. above the combustion chamber the fire tubes being in horizontal arrangement

Description

Nirnn ArtNr FFicE.

BENJAMIN F. CAMPBELL, OF ROXBURY, MASSACHUSETTS.

IIVIPROVED STEAM-BOILER.

Specification forming part of Letters Patent No. 30,957, dated December 18, 1860.

companying drawings, making part of this,

specification, in which- Figure l is a view of my improved boiler; Fig. 2, a longitudinal vertical section; Fig. 3, a transverse vertical section on the line c :n of Fig. 2.

The object of my present invention is to produce a steam-boiler having' alarge amount I of heating-surface in a compact form, and which shall produce a good combustion of the fuel, thus rendering it economical in its operation; and my invention consists in a steam-boiler, from the body of which projects laterally wings containing series of fire-tubes communicating with the iire-boX and with a smoke-stack.

That others skilled in thc art may understand and use my invention, I will proceed to describe the manner in which I have carried out the same.

In the said drawings, A is the vertical body of the boiler, the lower part of which contains the grate and iire-boX B, which is surrounded with a water-space, C. The upper part of this body forms a steam-dome, D, to which access may be had for repairs, dsc., through a man-hole, c, on top. (The steampipes, valves, itc., not essential to the understanding of my invention, are not shown on these drawings.) A door, b, gives access to the iire-boX B. From opposite sides of the body A of the boiler project wings E, which are circular in their cross-section, as shown in Fig. 3, and are connected to the circular body A at c. A crown-sheet, F, projects inward into the {ire-space B on each side, and from it rises a tube-sheet, G, which is attached to 'another crown-sheet, H, over the centerof the fire-box B. The tubes I are secured at their inner ends in the tube-sheets G, and at their other ends in the heads K of each of the wings E. As the space between the two tubesheets G is considerably less than the diameter of the lower part of the fire-box B, the

strain which would be put upon the crown-` sheet by the heat of the fire, if in one plain surface, is divided, the crown-sheets F being bridged by the tube-sheets G, while the crownsheet H, which is comparatively narrow, may be braced from the top of the dome D. In order, however, to give additional support to the crown-sheets F, I place over each a bridge, L, which is a heavy plate or sheet of iron perforated with holes through which the tubes I pass, the holes being large enough for the water to circulate around the tubes. The lower edge of this plate L is slit up a short distance at intervals, and the alternate portions ofthe plate are bent toward opposite sides, forming feet e, which are riveted to the top of the crown-sheet. y

This construction of bridge I iind possesses great strength, while it allows me to place the lower row of tubes I close down to the crownsheet F. The water-space C around the lireboX communicates with the water space around the tubes I in each wing E, and these latter spaces open directly into the dome D, the water-level being maintained a little above the crown-sheet H. The heads K of the Wings E are each intended to form one side of a smoke-box, into which the cylinder exhausts.

These smoke-boxes may each have a separate smoke-stack; or a iiue from each may enter a single smoke-stack, as may be found most convenient. The boiler here represented possesses the advantages of compactness, cheapness of construction, and great strength. The weight may be equally balanced on each side of the fire-box, and its combustion of fuel is found to be very perfect.

I am aware of steam-boilers having been constructed with the tubes and -tube-sheet projected from one side of the fire over the grate, as in the1 boiler upon which Letters Patent were granted to C. F. Thomas, June 19, 1855. I therefore disclaim the projection of the tube and tube-sheet over the iire; but

What I do claim as of my invention isl. The combined arrangement of two wings, E, containing the tubes I, with a single fireboX, when the said wings project equally from either side of the fire-chamber over the grate, as and for the purposes hereinbefore set. forth.

2. The perforated plate L for bridging the crown-sheet F, substantially as set forth.

B. F. CAMPBELL.

Witnesses:

THos. R. RoAcH, Trios. D. GLovEn.

US30957A Improved steam-boiler Expired - Lifetime US30957A (en)

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4447672A (en) * 1980-10-06 1984-05-08 Nippon Electric Co., Ltd. Device for encrypting each input data bit by at least one keying bit decided by a code pattern and a bit pattern of a predetermined number of preceding encrypted bits
US4520232A (en) * 1982-04-30 1985-05-28 Wilson William J Polygraphic encryption-decryption system
US4605820A (en) * 1983-11-10 1986-08-12 Visa U.S.A. Inc. Key management system for on-line communication
US4668103A (en) * 1982-04-30 1987-05-26 Wilson William J Polygraphic encryption-decryption communications system
US4760600A (en) * 1987-02-13 1988-07-26 Oki Electric Industry Co., Ltd. Cipher system
US4868757A (en) * 1983-12-16 1989-09-19 Pi Electronics Corporation Computerized integrated electronic mailing/addressing apparatus
US4890324A (en) * 1986-11-11 1989-12-26 U.S. Philips Corp. Enciphering/deciphering method and arrangement for performing the method
US5724427A (en) * 1995-08-17 1998-03-03 Lucent Technologies Inc. Method and apparatus for autokey rotor encryption
US6154544A (en) * 1995-05-17 2000-11-28 The Chamberlain Group, Inc. Rolling code security system
EP2088644A1 (en) 2004-10-21 2009-08-12 The Boeing Company Structurally integrated antenna aperture and fabrication method

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4447672A (en) * 1980-10-06 1984-05-08 Nippon Electric Co., Ltd. Device for encrypting each input data bit by at least one keying bit decided by a code pattern and a bit pattern of a predetermined number of preceding encrypted bits
US4520232A (en) * 1982-04-30 1985-05-28 Wilson William J Polygraphic encryption-decryption system
US4668103A (en) * 1982-04-30 1987-05-26 Wilson William J Polygraphic encryption-decryption communications system
US4605820A (en) * 1983-11-10 1986-08-12 Visa U.S.A. Inc. Key management system for on-line communication
US4868757A (en) * 1983-12-16 1989-09-19 Pi Electronics Corporation Computerized integrated electronic mailing/addressing apparatus
US4890324A (en) * 1986-11-11 1989-12-26 U.S. Philips Corp. Enciphering/deciphering method and arrangement for performing the method
US4760600A (en) * 1987-02-13 1988-07-26 Oki Electric Industry Co., Ltd. Cipher system
US6154544A (en) * 1995-05-17 2000-11-28 The Chamberlain Group, Inc. Rolling code security system
US5724427A (en) * 1995-08-17 1998-03-03 Lucent Technologies Inc. Method and apparatus for autokey rotor encryption
EP2088644A1 (en) 2004-10-21 2009-08-12 The Boeing Company Structurally integrated antenna aperture and fabrication method

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