Bussey v. Excelsior Mfg. Co., 110 U.S. 131 (1884)

Syllabus

U.S. Supreme Court

Bussey v. Excelsior Mfg. Co., 110 U.S. 131 (1884)

Bussey v. Excelsior Manufacturing Company

Argued January 8, 1884

Decided January 21, 1884

110 U.S. 131

Syllabus

The first four claims of reissued letters patent No. 3,815, granted to Esek Bussey and Charles A. McLeod, February 1, 1870, for a "cooking stove," the original patent, No. 56,688, having been granted to said Bussey, as inventor, July 24, 1868, and reissued to him, as No. 3,649, September 28, 1889, namely:


Opinions

U.S. Supreme Court

Bussey v. Excelsior Mfg. Co., 110 U.S. 131 (1884) Bussey v. Excelsior Manufacturing Company

Argued January 8, 1884

Decided January 21, 1884

110 U.S. 131

APPEALS FROM THE CIRCUIT COURT OF THE UNITED

STATES FOR THE EASTERN DISTRICT OF MISSOURI

Syllabus

The first four claims of reissued letters patent No. 3,815, granted to Esek Bussey and Charles A. McLeod, February 1, 1870, for a "cooking stove," the original patent, No. 56,688, having been granted to said Bussey, as inventor, July 24, 1868, and reissued to him, as No. 3,649, September 28, 1889, namely:

"1. A diving flue cooking stove with the exit flue so constructed as to enclose on the sides and bottom the culinary boiler or hot water reservoir B;"

"2. A diving flue cooking stove with the exit flue constructed across the bottom and up the rear upright side of the culinary boiler or hot water reservoir B;"

"3. A diving flue cooking stove constructed with an exit passage F below the top of the oven and an exit flue E E' in combination with an untried reservoir B attached to the rear of the stove and placed just above such exit passage, and so arranged that the gases of combustion, in passing through such exit flue, will impinge upon or come in direct contact with said reservoir, substantially as and for the purposes hereinbefore specified;"

"4. An exit passage F constructed in the rear of a diving flue cooking stove and below the top of the oven, in combination with an uncased reservoir B attached to the rear of the stove, the bottom of which reservoir is also below the top of the oven and so arranged that the gases of combustion will come in contact with and heat such reservoir by a direct draft from the fire box to the smoke pipe"

are limited to a structure in which the front of the reservoir has no air space in front of it, and in which the exit flue does not expand into a chamber at the bottom of the reservoir, and in which the vertical part of the exit flue does not pass up through the reservoir.

Hence those claims are not infringed by a stove in which, although there are three flues, and an exit passage below the top of the oven, and a reservoir the bottom of which is below the top of the oven, no part of the rear end vertical plate is removed so as to allow the gases of combustion to come into direct contact with the front of the reservoir, nor is any such plate employed as the plate w w of the patent, but there is a dead air space between the rear plate of the flue and the front of the reservoir, and the exit flue is not a narrow one, carried across the middle of the bottom of the

Page 110 U. S. 132

reservoir, as in the patent, but the products of combustion, on leaving the flue space, pass into a chamber beneath the reservoir, the area of which is coextensive with the entire surface of the bottom of the reservoir, and the vertical passage out of such chamber is not one outside of the rear of the reservoir, but is one in and through the body of the reservoir, and removable with it.

The claim of letters patent No. 142,933, granted to David A. Nation and Ezekiel C. Little as inventors, September 16, 1873, for an "improvement in reservoir cooking stoves," namely,

"1. The combination, with the back plate I of the cooking stove A, of the reservoir C, arranged on a support about midway between the top and bottom plates of the stove, and the air chamber b between the stove back and reservoir front, open at the top, and communicating with the air in the room, substantially as and for the purposes set forth;"

"2. The combination, with the stove A and reservoir, C, of the small opening a, the sheet flue G under the entire bottom of the reservoir, and the small exit passage or pipe E, all substantially as and for the purposes herein set forth,"

are void for want of novelty.

The claims of letters patent No. 142,934, granted to said Nation and Little, September 16, 1873, for an " improvement in reservoir cooking stoves," namely,

"1. The detachable base pan or flue shell D, attached to the body at a point near the center of the back plate of the stove, by means of hooks a a cast on the base pan, and pins b b on the stove body, substantially for the purposes herein set forth;"

"2. The portable reservoir F, with the flue E in the rear side, in combination with the portable base pan or flue shell D, substantially as and for the purposes herein set forth;"

"3. The combination, with a three flue stove having damper A arranged as described, of the portable base pan or flue shell D and warming closet G, all substantially as and for the purposes herein set forth,"

are void for want of novelty.

There was no invention, in claim 1, in using, to attach the base pan, an old mode used in attaching other projecting parts of the stove.

Claims 2 and 3 are merely for aggregations of parts, and not for patentable combinations.

MR. JUSTICE BLATCHFORD delivered the opinion of the Court.

This is a suit in equity brought in the Circuit Court of the United States for the Eastern District of Missouri by Esek Bussey and Charles A. McLeod against the Excelsior Manufacturing Company of St. Louis, a corporation, for the infringement of three several letters patent, being (1) reissue No. 3,815, granted to the plaintiffs, February 1, 1870, for a "cooking

Page 110 U. S. 133

stove," the original patent, No. 56,686, having been granted to said Bussey, as inventor, July 24, 1866, and reissued to him, as No. 3,649, September 28, 1869; (2) letters patent No. 142,933, granted to David H. Nation and Ezekiel C. Little, as inventors, September 16, 1873, for an "improvement in reservoir cooking stoves;" (3) letters patent No. 142,934, granted to said Nation and Little, as inventors, September 16, 1873, for an "improvement in reservoir cooking stoves." After an answer and proofs, the circuit court made a decree finding no infringement of No. 3,815 and dismissing the bill as to that patent; decreeing that the other two patents were valid and had been infringed as to all their claims, and awarding a perpetual injunction as to those claims, and an accounting before a master. The master reported one cent damages. The plaintiffs excepted to the report, claiming $14,972 damages. The court confirmed the report and made a decree accordingly, which also provided that the entire costs to be taxed in the suit should be divided and that the plaintiffs should pay five-sevenths of them and the defendant two-sevenths. Both parties appealed to this Court.

The specification of No. 3,815 says:

"Figure 1 is a side elevation; Figure 2, a rear elevation; Figure 3, a plan; Figure 4, a vertical section at the line z z; Figure 5 a front view of a section at the line y y, and Figure 6 a top view of a partial section at the line x x, all of a cooking stove embodying my said invention, like parts being marked by the same letters in all the figures, and the arrows therein being indicative of the courses in which the gases of combustion pass through the stove. One part of my invention consists in arranging a culinary boiler or hot water reservoir in the rear of the oven of a diving flue cooking stove, with an exit flue extending down the front under the bottom and up the rear of the said reservoir, substantially as hereinafter described and specified. It also consists

Page 110 U. S. 134

in arranging a culinary boiler or hot water reservoir in the rear of the oven of a diving flue cooking stove, with an exit flue leading from some point in the rear of the vertical flue or flues below the top of the said oven, and continuing under the bottom and up the rear side of said reservoir, substantially as hereinafter described and specified. It also consists in the arrangement of a diving flue cooking stove, with an exit passage constructed in the vertical rear flue or flues thereof, and below the top of the over, in such a manner that the gases of combustion, after passing through such exit passage, will impinge"

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"upon or come in contact with the bottom or sides of a reservoir placed in the rear of the stove, and just above said exit passage, substantially as hereinafter described and specified. It also consists in the employment of a thin plate or sheet of metal between the front plate of the reservoir and the rear end vertical flues of

Page 110 U. S. 135

the said stove, substantially as shown and specified. In illustration of my invention, the aforesaid drawings represent a cooking stove having an oven A, a culinary boiler or hot water reservoir B, arranged opposite to the rear upright side or end d of the oven, and an exit flue E E' extended from the central vertical flue K of said stove at a point below the top of the oven, under or across the bottom g of the reservoir, and from thence up along the rear upright side of said boiler or reservoir to the draft pipe I. For the purpose of allowing the boiler to heat more readily, a portion of the rear end vertical plate of said stove is removed, so as to uncover the upper portion of the rear end vertical flues, and the front of the boiler is attached to the rear of said flues in the manner shown and described in my reissued patent of July 24, 1866. Between the inner side of the boiler B and the rear end vertical flues K and L L', a plate may be employed, indicated by dotted line w w. The object of this plate is as follows:"

"It has been ascertained by experience that when, during the use of the oven for baking purposes, a large quantity of cold water is suddenly poured into the reservoir, and there is nothing between the front of the boiler and gases of combustion passing through the rear end vertical flues, the heat of the said gases will be so much absorbed by the reservoir as to sensibly cool the oven and interfere with the process of baking. To obviate this, I employ the thin plate w w, placed between the front of the reservoir and the said rear end vertical flues, and which, while it allows sufficient heat to pass through it to aid in heating the boiler, protects the front thereof from the direct impact of the gases of combustion and preserves an equable heat in the oven. In case the said plate is dispensed with, the inner side J of the said boiler will form a part of the lateral rear casing of the said rear end vertical flues and will be heated by direct contact with the gases of combustion as they pass down and up the same. M is the fire box, and N and R the top and bottom flues of said stove. The operation of my said invention is as follows: a fire being kindled in the fire box M, and the damper Q at the top of the oven being open so as to allow of a direct draft, the gases of combustion from the said fire box will pass down the middle vertical flue K, through the exit passage F, and exit flue E E', to the smoke pipe I, heating the contents of the reservoir in its passage through the exit flue, as aforesaid. By this mode of construction, I am enabled to obviate what

Page 110 U. S. 136

has been heretofore the greatest objection to reservoir stoves of this class -- namely that the reservoirs would not heat with a direct draft. It will also be observed that by this device of constructing the exit passage below the top of the oven, I can at the same time, by a direct draft, heat the rear side of the oven and the reservoir, instead of wasting the heat by carrying it directly to the chimney. When the damper Q is closed for the purpose of heating the oven, the gases of combustion will pass down the side vertical flues L L' and under the bottom of the oven, returning through a central horizontal flue to the central vertical flue K, from which they pass through the exit flue E E' as aforesaid. I am aware that cooking stoves have been in use in which the reservoir has been incased or enclosed on all sides except the top by a kind of expanded flue, through which the gases of combustion are made to pass. The advantages of my plan over this device are twofold: first, it is much more economical, requiring far less material and labor to construct it, and second, by confining the heat and gases of combustion to a small space at the bottom and rear of the reservoir, the contents thereof will be much more effectually heated than where the products of combustion are admitted to an extensive flue space and permitted to rise and expend their heat at or near the top of the reservoir."

The claims of the patent, the first four only of which are alleged to have been infringed, are as follows:

"1. A diving flue cooking stove with the exit flue so constructed as to enclose on the sides and bottom the culinary boiler or hot water reservoir B."

"2. A diving flue cooking stove with the exit flue constructed across the bottom and up the rear upright side of the culinary boiler or hot water reservoir B."

"3. A diving flue cooking stove constructed with an exit passage F below the top of the oven and an exit flue E E', in combination with an uncased reservoir B, attached to the rear of the stove and placed just above such exit passage, and so arranged that the gases of combustion, in passing through such exit flue, will impinge upon or come in direct contact with said reservoir, substantially as and for the purposes hereinbefore specified."

"4. An exit passage F constructed in the rear of a diving flue cooking stove and below the top of the oven, in combination with

Page 110 U. S. 137

an uncased reservoir B, attached to the rear of the stove, the bottom of which reservoir is also below the top of the oven, and so arranged that the gases of combustion will come in contact with and heat such reservoir by a direct draft from the fire box to the smoke pipe."

"5. In a cooking stove wherein the rear end vertical plate or a portion of the same has been removed for the purpose of heating a reservoir placed in the rear thereof, the shield plate w w, in combination with the uncased reservoir B and the rear end vertical flues K, L, and L', substantially as and for the purposes hereinbefore described and specified."

The defendant's stove has three flues and an exit passage below the top of the oven, and a reservoir, the bottom of which is below the top of the oven; but no part of the rear end vertical plate is removed so as to allow the gases of combustion to come into direct contact with the front of the reservoir, nor is any such plate employed as the plate w w of the patent, but there is a dead air space between the rear plate of the flue and the front of the reservoir. The exit flue is not a narrow one, carried across the middle of the bottom of the reservoir, as in the patent, but the products of combustion, on leaving the flue space, pass into a chamber beneath the reservoir, the area of which is coextensive with the entire surface of the bottom of the reservoir, and the vertical passage out of such chamber is not one outside of the rear of the reservoir, but is one in and through the body of the reservoir, and removable with it. In view of the earlier patents put in evidence, we are of opinion that the four claims in question must be limited to a structure in which the front of the reservoir has no air space in front of it, and in which the exit flue does not expand into a chamber at the bottom of the reservoir, and in which the vertical part of the exit flue does not pass up through the reservoir. Under this construction, there is no infringement of No. 3,815.

Claim 1, in requiring that the exit flue shall "enclose on the sides and bottom" the reservoir, requires, in the language of the text of the specification, that it shall extend "down the front, under the bottom and up the rear" of the reservoir,

Page 110 U. S. 138

and it does not admit of an air space in front of the reservoir, nor is it limited to what is called a low down boiler or reservoir. The Getz patent of 1840 shows an exit flue passing under the bottom and up the rear side of a reservoir. The Spaulding or Paris patent of 1858 shows a diving flue enclosing the bottom and one of the sides of a reservoir.

Claim 2 is not limited to a low down boiler or reservoir. If a stove with an exit flue constructed across the bottom and up the rear upright side of a boiler or reservoir existed before, there was nothing patentable in applying such construction to a diving flue stove. The combination of exit flue and reservoir with which claim 2 is concerned has no patentable relation to the arrangement of the internal flues of the stove. The Getz patent of 1840 shows an exit flue extending across the bottom and up the rear upright side of a boiler. In the Stewart patent of 1859, the products of combustion enter a chamber under the reservoir and thence pass off by a pipe embraced within the walls of the reservoir. The exit flue of claim 2 must therefore be limited to one which passes under the bottom of the reservoir without expanding into a chamber substantially coextensive with the area of the bottom of the reservoir, as in the defendant's stove and in the Stewart patent of 1859, and also to one in which the escape pipe is outside of the rear wall of the reservoir and not within the reservoir, as in the defendant's stove and in the Stewart patent of 1859.

Claim 3 adds to claim 2 only the feature of having the exit passage or exit orifice into the exit flue below the top of the oven. There is no patentable relation between the combination of exit flue and reservoir and the location of the exit passage with reference to the oven, in view of the state of the art. In the Stewart patent of 1859, the exit opening was on a level with the top of the oven and led into a chamber under the reservoir. In the Spaulding or Paris patent of 1858 and in the Bussey patent of 1865, the bottom of the reservoir was below the top of the oven. There was no invention in causing the gases to act on a low down reservoir in the same way in which they had acted before on an elevated reservoir, and no invention in lowering the exit opening to correspond

Page 110 U. S. 139

with the depression of the reservoir, even though the incidental effect was to heat by a direct draft at the same time, the reservoir and the rear side of the oven.

Claim 4 adds to claim 3 only the feature of heating the reservoir by a direct draft from the fire box to the smoke pipe. This, however, is only a statement of the effect produced in a structure made according to the first three claims. In the Getz patent of 1840 and in the Stewart patent of 1859, the exit pipe was in the rear of the reservoir, and the gases were brought into contact with the bottom of the reservoir, and it was heated by a direct draft. There is really nothing in claim 4 beyond what is found in claim 3.

The specification of No. 142,933 is as follows:

"Our invention relates to that class of cooking stoves in which a water reservoir is situated at the rear end of the stove, and it consists in the arrangement of the reservoir upon an extended support at the rear of the stove, so that an air chamber, opening at its top into the air of the room, is left between the back plate of the stove and the front of the reservoir, thereby protecting the front of the same from becoming burned out by being in direct contact with the heat from the fire. It also consists in a broad sheet flue arranged under the reservoir, the heated air for which enters through a small passage in the back plate of the stove, and, after circulating in said flue, passes out through the small opening in the rear thereof, all as more fully hereinafter set forth. . . . Figure 1 is a longitudinal vertical section of our stove; Fig. 2 is a transverse vertical section of the same through the water reservoir; Fig. 3 is a plan view of the reservoir, and Fig. 4 is a front view of the sheet flue under the bottom of the reservoir. A represents the top plate of the stove. B is the oven; C, the water reservoir; D, the center one of the three flues of the stove, and E, the exit flue, located in the rear of the reservoir, C. This reservoir is located upon a support therefor, which extends rearward from a point about half way between the top and bottom plates of the stove, and which may either be attached to or form part of the stove, and a sheet flue G is provided in the same under the bottom of the reservoir C. The heat, entering this flue,

Page 110 U. S. 140

passes through the small center passage a in the stove back I. It is there spread and retained under the reservoir until it gradually ascends through the small passage or exit flue E. By this construction,"

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"the rapid exit of the heated air from under the reservoir is prevented, and the heat, being retained under the bottom of the reservoir, causes the water in the same to become hot in a short time. The reservoir C is so arranged with respect to the

Page 110 U. S. 141

back plate I of the stove that an air space b, communicating with the air of the room at the top, is left between the front of the reservoir and the back plate. By this means, the outside air will pass down between the back plate and front of the reservoir and prevent the front of the reservoir from burning out, which would be the case if the parts were in direct contact, especially when the water in the reservoir becomes low. In the ordinary method, the flame is made to strike directly upon the front surface of the reservoir, thereby rendering it liable to crack while replenishing with cold water upon the heated plates. The opening a in the back plate I of the stove is of the same width as the center flue D, and the products of combustion pass through said opening into the sheet flue G, which thus has a contracted entrance and a contracted exit. When using the direct draft, the damper d of the center flue D is turned downward and rests against the back oven plate, as shown by the dotted lines in figure 1. At such times, the heat passes down the center flue D of the back, through the opening a in the back plate I into the sheet flue G, under the bottom of the reservoir and out of the exit flue E. When the indirect draft is used, the damper d occupies the position shown in Fig. 1, and at such times the heat passes down the usual side flues and under the bottom of the oven to the front of the stove, where it turns into the center flue D and passes back through the opening a to the sheet flue G, under the bottom of the reservoir and out of the exit flue. With a stove thus constructed, the reservoir is heated almost entirely from the bottom, and the heat acts upon the entire surface of the bottom of the reservoir, and when the reservoir is but partially filled, there is no danger of the heat acting against and burning out the top part of the front side of the reservoir. We do not claim under this patent a flue shell and rear central extension that is detachable from the stove body by means of hooks on the one and catches or pins on the other, nor do we specifically claim a reservoir with a flue in its rear, as these elements of invention are the subject of a separate application for a patent, now pending; neither do we wish to be understood as claiming the arrangement of the reservoir and flues for heating the same in front of the fire box of the stove, as shown in our patent of May 6 1873, No. 138,682."

The claims of No. 142,933 are two in number, as follows, and the infringement of both is admitted:

Page 110 U. S. 142

"1. The combination with the back plate I of the cooking stove A of the reservoir C, arranged on a support about midway between the top and bottom plates of the stove, and the air chamber b between the stove back and reservoir front, open at the top and communicating with the air in the room, substantially as and for the purposes set forth."

"2. The combination, with the stove A and reservoir C of the small opening a, the sheet flue G, under the entire bottom of the reservoir, and the small exit passage or pipe E, all substantially as and for the purposes herein set forth."

The point of invention in claim 1 is in so arranging the reservoir as to have an air space between the front plate of the reservoir and the back plate of the stove to a sufficient extent to prevent the flame from striking against the upper part of the front plate of the reservoir, which it would do if the upper part of the back plate of the stove were cut away and there were no such air space. It is the upper part of the front side of the reservoir which, as the specification states, is liable to the burned out by the direct action of the flame as the water in the reservoir is lowered. In the McDowell patent of 1871, all the upper part of the reservoir is protected by an air space, open at the top, between the reservoir and the stove.

The point of invention in claim 2 is to take the gases through a small opening into a broad sheet flue under the bottom of a reservoir and out through another small opening is the rear, so that they will circulate in the broad flue and act on the entire surface of the bottom of the reservoir. The Stewart patent of 1859 shows the same arrangement with an elevated reservoir, but there is no invention in applying it to a low down reservoir. The Tiffany patent of 1869 shows the same arrangement with a low down reservoir.

The specification of No. 142,934 says:

"The nature of our invention consists in the construction and arrangement of a cooking stove with a portable base pan or flue shell, and the means for attaching the same, as will be hereinafter more fully set forth. . . . Figure 1 is a longitudinal vertical section of our improved cooking stove; Fig. 2 is a side view of

Page 110 U. S. 143

the rear end of the same; Fig. 3 is a plain view of a loose cover or plate for the base pan, and Fig. 4 is a perspective view of the portable base pan or flue shell. A represents the main baking"

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"oven of the stove; B is the top flue; B B the vertical and horizontal side flues; C is the center flue; D is the base pan or flue shell; E the exit flue passing up the rear side of the reservoir;

Page 110 U. S. 144

F is the reservoir; G the warming closet; H the damper; I the fire chamber, and J the division plate. When using the direct draft, the damper H occupies a line parallel with the back plate of the main oven, hanging down in the center flue of the back part of the stove. At such time, the products of combustion pass from the fire chamber I, along the top flue B, and down the center flue, between the back oven plate and the division plate J, into the base pan D, and out of the exit flue E. When using the indirect draft, the damper H occupies the position shown in Fig. 1. At such time, the products of combustion pass over the top oven plate flue B and down the vertical end flues B' into corresponding flues at the bottom, making the turn into the center flue of the bottom at C, through said bottom center flue, into and through the rear center flue, through the division plate J, into the base pan flue D, and out of exit flue E, so that, whether using the direct or indirect draft, the reservoir is heated only on its bottom surface. The base pan D is made separate from the stove, and provided on each side with a hook projection a, to be fastened on a pin b projecting from the side of the stove. By this means, the base pan can readily be attached and detached, and when attached, it fits in the upper end and forms the top of the warming oven G. K represents a plate with two boiler holes in it, which can be used when the reservoir is removed or should become broken in shipment, thus converting it into a six hole stove. It is our purpose to insert a loose center piece between the boiler holes in the plate K so that an ordinary wash boiler can be used on said plate if desired. The novelty of this invention consists in the portability of the reservoir base pan D and in the warming closet attachment, whereby we economize space in shipment and whereby repairs can be made at a very small cost and by unskilled workmen, as all the attachments will be shipped separate from the body of the stove and mounted after they reach their destination. Should the reservoir become broken in shipment or otherwise, the plate K can be used, thus converting it into a six hole stove, upon which an ordinary wash boiler can be used in case of emergency. The front bottom corner of the reservoir rests upon a strip d attached to the division plate J, which thus entirely shuts off the air space at the bottom. By means of the base pan flue D, extending under the whole bottom of the reservoir F and the space between the reservoir

Page 110 U. S. 145

and the division plate J, the reservoir becomes heated only on its bottom surface, where there will always be water, if any in the reservoir at all. The exit flue E passes up through and forms part of the reservoir F at the back or rear side, as shown. We do not claim under this specification the combination of the reservoir with the back of the stove when an air space open at the top is left between the two, as seen in the drawings, nor do we claim the sheet flue under the reservoir in the shell D, as both of these arrangements are the subject matter of a separate application for a patent, now pending."

The claims of No. 142,934 are three in number, as follows, and the infringement of all them is admitted:

"1. The detachable base pan or flue shell D, attached to the body at a point near the center of the back plate of the stove by means of hooks a a, cast on the base pan, and pins b b on the stove body, substantially for the purposes herein set forth."

"2. The portable reservoir F, with flue E in the rear side, in combination with the portable base pan or flue shell D, substantially as and for the purposes herein set forth."

"3. The combination, with a three flue stove having damper H, arranged as described, of the portable base pan or flue shell D and warming closet G, all substantially as and for the purposes herein set forth."

The Tiffany patent of 1869 shows a low down reservoir at the rear of a three flue stove, and a warming closet below the reservoir. The gases pass from the flue space into a base pan or chamber which is immediately below the reservoir, and forms the top of the warming closet. The flue by which the gases escape from the base pan is in the rear of the reservoir and is removable with it. The Tiffany stove, having three flues, must have a damper to open and close the middle flue. The specification of the Tiffany patent states that the reservoir and the warming closet are capable of being attached to and detached from the stove, so that the stove is complete without them, and they are complete without being attached, and it also states that they may be attached to the stove by lugs or hooks, either cast in the back of the stove, with a corresponding eye in the side of the case surrounding the reservoir, or in the top and

Page 110 U. S. 146

side of the reservoir, or the hook and the eye may be reversed. A detachable base pan existed before, and hearths and ash pans existed attached by lugs and hooks in the same way as the defendant's base pan. A portable reservoir was old, with an escape pipe or flue forming a part of the reservoir. A damper for the middle flue was old. A warming closet below a base pan and that below a reservoir were old. In view of the state of the art, there was no invention, in claim 1 of the patent, in using to attach the base pan an old mode used in attaching other projecting parts of the stove. Claim 2 is merely for an aggregation of parts and not for a patentable combination, there being no patentable relation between a portable reservoir with a flue in its rear side and the existence or portability of a base pan beneath it. In claim 3 there is merely an aggregation of parts, there being no patentable relation between a damper for the middle flue of a three flue stove, and the existence or portability of a base pan or the existence of a warming closet.

The decree of the circuit court is reversed with costs in this Court to the Excelsior Manufacturing Company on both appeals, and the case is remanded to the circuit court with direction to dismiss the bill with costs.