MacMichael v. Newnam

83 F.2d 699, 23 C.C.P.A. 1147, 1936 CCPA LEXIS 98
CourtCourt of Customs and Patent Appeals
DecidedJune 1, 1936
DocketNo. 3631
StatusPublished

This text of 83 F.2d 699 (MacMichael v. Newnam) is published on Counsel Stack Legal Research, covering Court of Customs and Patent Appeals primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
MacMichael v. Newnam, 83 F.2d 699, 23 C.C.P.A. 1147, 1936 CCPA LEXIS 98 (ccpa 1936).

Opinion

BlaNd, Judge,

delivered the opinion of the court:

The Examiner of Interferences of the United States Patent Office awarded priority of invention to Hugh R. MacMichael, the appellant herein, in all the counts, 1 to 8, inclusive, of an interference involving an invention relating to improvements in the control of operat-, ing mechanism for a Scotch hearth. Appeal was taken by William [1148]*1148E. Newnam, the appellee herein, to the Board of Appeals, which modified the decision of the Examiner of Interferences, affirming his award of priority to MacMichael of the subject matter of counts 1 and 2, and reversing him as to the subject matter of counts 3 to 8, inclusive, priority of invention in the latter being awarded to New-nam. From the decision of the Board of Appeals granting Newnam priority as to counts 3 to 8, inclusive, MacMichael has appealed to this court. No appeal was taken by Newnam as to counts 1 and 2.

Counts 3 and 8 are regarded as illustrative and read:

3. A smelting furnace comprising, a hearth adapted to receive molten metal upon which, floats the material to be smelted, a carriage mounted for movement along said hearth, a rabbling device mounted on said carriage and adapted to rabble the charge on said hearth, a baching device mounted on said carriage and adapted to push back the rabbled charge, means for operating said rabbling and backing devices in cooperative relation, mid means for starting the operation of said baching device after said rabbling device has started.
8. A smelting furnace comprising, a hearth adapted to receive molten metal upon which floats the material to be smelted, a carriage mounted for movement along said hearth, a rabbling device mounted on said carriage and adapted to rabble the charge on said hearth, a backing device mounted on said carriage and adapted to push back the rabbled charge, means for feeding said carriage along said hearth, means for operating said backing and rabbling devices in cooperative relation and with said feeding means, and memis for holding said backing device retracted while said carriage moves a predetermined distance with said rabbling device in operation. [Italics ours.]

MacMicliael’s application, No. 295,420, was filed July 26,1928, while that of Newnam, No. 282,664, was filed June 4, 1928. MacMichael is, therefore, the junior party.

MacMichael was chief engineer of the American Smelting and Refining- Company which had plants at Alton, Illinois, and El Paso, Texas. Newnam was a metallurgical engineer employed by the St. Louis Smelting and Refining Co., of Collinsville, Illinois.

Prior to the invention by Newnam, in 1916, of a mechanical poker or rabbler, to which further reference will be hereinafter made, the operation of a Scotch hearth required the services of three workmen, one to rabble or poke the ore and fuel while the same was progressively moving from one end of the hearth to the other, a second, following the first, to push back or shovel the disturbed ore and fuel against the water back, and a third to feed fresh ore and ■ fuel into the trough. On account of the intense heat, summer work was greatly interfered with and mechanical means of performing the services of the hearth workers was of very great importance to the lead ore smelting industry.

.Newnam was granted a patent No. 1,388,144, on August 16, 1921, for a mechanical poker or rabbler. The American Smelting and Refining Company, which employed MacMichael, took a license under this patent, and the improvement was generally adopted throughout [1149]*1149the industry. In the fall of 1926, MacMichael began to experiment with a view of having a mechanical shovel which was to follow the poker and separate the grey slag from the charge which had to be shoveled back. In October, 1926, Newnam, at the request of one Porter, manager of the Alton plant of the American Smelting and ltefining Company, visited the plant. According to the testimony of Porter, he and MacMichael arranged to talk to Newnam about the practicability of inventing a mechanical shovel when he, Newnam, a few days thereafter, was to visit the plant and talk to Porter. At the time of this visit, Newnam told Porter and MacMichael that in his opinion it could not be done and that he thought there were certain elements that would interfere with a machine-operated shovel.

In November, 1926, a shovel was built by Porter and one Poske along the principles set forth by MacMichael to Poske, and put on a furnace, but it couldn’t be made to work. Newnam saw this apparatus and stated that he expected that it wouldn’t work. Shortly thereafter, MacMichael went to El Paso, Texas, and there designed and built a shovel which was sent from there to Porter. Porter stated that about February 7,1927, the machine was placed in regular operation replacing one man on the furnace. Newnam, in the spring of 1927, saw this machine in operation. He testified: “I complimented Mr. Porter on the success he had achieved with the backing shovel attachment”. Since the poker could not operate to the extreme left hand part of the hearth on account of the shovel being on the left of the poker and interfering with its operation, a notch was cut in the end of the hearth to permit the shovel to extend past the hearth and thus permit the poker to operate the entire length of the hearth. The record shows that Newnam witnessed this device in operation.

Immediately thereafter (May 1, 1927) Newnam hired a draftsman and proceeded to make what he regarded as an improvement on the MacMichael machine. He devised a cam and crank which avouIc! so operate that the shovel was held back until the poker did its work at the extreme left corner of the hearth. When the poker had done its work there, the shovel then would begin to operate.

MacMichael introduced in evidence Exhibit 6, which is a drawing, showing, among other things, a shovel with a clutch and throw-out mechanism coupled in a manner which satisfies the requirements of involved counts 3 to 8, inclusive. The drawing is given a date of April 18,1927. The drawing is in black, except as to a few lines with which we are not concerned, and also with the exception of characters representing the device which is particularly concerned with the counts here at bar, which excepted subject matter is in red. There is much contention here on the part of Newnam that the drawing was [1150]*1150erroneously accepted as sufficient evidence of conception on the part of MacMichael.

The disclosure in appellant’s first application for a patent substantially described his original construction — the shovel which extended past the notched hearth end and which was held by the Examiner of Interferences to not satisfy the involved counts. This first application, No. 196,304, was filed June 3, 1927, and was one of the applications which was the subject of interference No. 58,459, between the same parties. Thirteen months later, on July 26, 1928, seven weeks after appellee had filed his application dated June 4, 1928, which included the claims constituting the counts of this interference, MacMichael filed the application at bar, No. 295,420, in which he disclosed and claimed substantially the same invention as that claimed in appellee’s application. The counts here involved originated in appellee’s application.

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Bluebook (online)
83 F.2d 699, 23 C.C.P.A. 1147, 1936 CCPA LEXIS 98, Counsel Stack Legal Research, https://law.counselstack.com/opinion/macmichael-v-newnam-ccpa-1936.