US58474A - Ghaeles w - Google Patents
Ghaeles w Download PDFInfo
- Publication number
- US58474A US58474A US58474DA US58474A US 58474 A US58474 A US 58474A US 58474D A US58474D A US 58474DA US 58474 A US58474 A US 58474A
- Authority
- US
- United States
- Prior art keywords
- bars
- grate
- grates
- ones
- ghaeles
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 239000003245 coal Substances 0.000 description 4
- 230000000284 resting Effects 0.000 description 4
- 235000002918 Fraxinus excelsior Nutrition 0.000 description 2
- 241000223221 Fusarium oxysporum Species 0.000 description 2
- 210000001503 Joints Anatomy 0.000 description 2
- 210000002832 Shoulder Anatomy 0.000 description 2
- 239000002956 ash Substances 0.000 description 2
- 239000003818 cinder Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000003467 diminishing Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 230000002650 habitual Effects 0.000 description 2
- 230000000414 obstructive Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23H—GRATES; CLEANING OR RAKING GRATES
- F23H17/00—Details of grates
- F23H17/12—Fire-bars
Description
UNITED STATES PATENT OEEIGE CHARLES W. PIERCE, OF ALBANY, NEW YORK.
GRATE-BA R.
Specification forming part of Letters Patent No. 58,474, dated October 2, 1866.
.To all whom it may concern:
Be it known that I, CHARLES W. PIERCE, of the city of Albany, State .of New York, have invented a new and improved method of constructing Grates for Burning Coal, adapted for service with steam-boilers, maltkilns, or any otherV duty in which coal is extensively used.
In the use of grates, as at present generally constructed and arranged, the bars, after a period varying with the habitual intensity of the heat, but at best not very long, become so warped and burned as to require replacement with new ones. It is to reduce the eX- pense of this proceeding, by diminishing the frequency of these repairs, and to make the replacing bars cheaper in themselves, that I propose to effect by my invention.
My plan consists of a combination of a lower. and upper grate, as fully described in the following specification, with the drawings, forming part thereof.
Figure l represents in profile view, Fig. 2 in plan view reversed, and Fig. 3 in crosssection, the lower grate with bars. Fig. 4 represents in profile view, Fig. 5 in crosssect-ion, the upper grate with its bars. Fig. 6 shows in perspectiveV the upper and lower grates combined.
Similar letters denote the same parts of the apparatus.
The lower grate consists of A A, two light side bars, shaped as shown in the drawings, united by oblique crosspieces a a at the ends and at suitable intervals to a central drop, bar or keel, B, lying below the range of the side bars. Its upper edge is straight and on aline with the lower edges of the side bars, its lower edge being a reversed arch or iishbelly shape, (so called,) its object being to stiften the structure.
C C are square shoulders to give the grate a firm bearing in its settings. This grate is a permanent foundation i for an upper grate, whichis replaceable by another upon it when unfit for service. Y
The upper grate consists of three bars, D D D, shaped as shown in the drawings, united by crosspieces'd d at the ends and suitable intervals, the center bar being on its lower edge fish-belly shape, in order to stiffen it.
The side bars are formed at their lower edges, e c, so as to make, with the upper outer edges of the lower grate, at f j', a dovetail joint, (see Fig. 6,) so Ithat the' upper bars are to be slid upon the lower ones, where they rest firmly, and cannot be lifted or pressed 0E them, thus combining the two setsof bars, so as to prevent warpage and a consequent separation of them.
The strength of this combined fabric is suoli that the upper grate need not be made to weigh more than two-thirds of weight due to three bars of ordinary construction.
The upper grate is alone. intended to hold the fuel, and it will be seen, from the relative positions of the bars of the upper and lower grates, that the ashes and cinders that pass through the upper bars will clear the lower ones, so that there will be no obstruction to a free draft; and the practical consequence of this is that the lower grate remains almost cool at all times, indestructible by ordinary use, and, consequently, need not be replaced.
The upper grate having its side bars resting their entire length upon the lower ones, are thus protected from settling and warping, so that they must` be burned out before they become unserviceable. This wilt prolong their duration much longer than ordinary grates. In addition to this, their light comparative weight-not to exceed two-thirdsmakes the cost of replacing them much less, so that, as a matter of economy, the cost of keeping up these grates will not be one-half of that of the ordinary ones.
The facility with which any of the sets of upper grates can be replaced upon the lower ones is a convenience worth calculating in the management of furnaces.
. What I claim as my invention, and desire to secure by Letters Patent, is-
1 A compound grate, made by the combination of an upper grate, D, formed as shown, resting by its outer bars upon the entire upper surface of the outer bars of a lower grate, A, formed as shown, the grates being held to each other by dovetailed joints formed along the outer edges of their outer bars, at f, in the manner and for the purposes set forth in this specification.
C.' W. PIERCE.
Witnesses z RIGHE. VARIGK DEWITT, A. V. DEWITT.
Publications (1)
Publication Number | Publication Date |
---|---|
US58474A true US58474A (en) | 1866-10-02 |
Family
ID=2128014
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US58474D Expired - Lifetime US58474A (en) | Ghaeles w |
Country Status (1)
Country | Link |
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US (1) | US58474A (en) |
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- US US58474D patent/US58474A/en not_active Expired - Lifetime
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