with 16 changes in the ehaxacter of the blank operated on (See Langston advertisement in 'Fibre Containers’ for December, 1931, Defendant’s Exhibit 15). The only time when the user of the printer-slotter is earning money from the use of his machine is when it is running. All of the soealled 'set-up’ time in malting adjustments between successive runs on different kinds of boxes is waste time and a financial loss to the user of the machine. Therefore the reduction in the shutdown time has from the beginning been a serious problem, and all manufacturers of printer-slotters have been continuously striving to so design their machines that the adjustments may be made in the minimum amount of time, and therefore with the minimum financial loss to the purchaser and user of the machine.”
The plaintiff’s device has successfully solved the problem, by making possible adjustments in the registry of the machine while it is running. The mechanical device, as formally described in Claim 1, of the “800” patent, is as follows:
“1. In combination, means for advancing a sheet of material, a printing cylinder for operating thereon, a driving gear, a helical gear secured to said printing cylinder, a second helical gear meshing with the first helical gear, means for transmitting power from said driving gear to said second helical gear for driving the first gears axially to thereby effect relative circumferential movement of said cylinder and said driving gear, and clutch connection for preventing or permitting relative rotation of said cylinder and said driving gear independent of any relative axial movement of said helical gears.”
Claim 14 of the “802” patent reads as follows:
“A machine for operating on advancing sheet material, including a rotatable member for operating on said material, a pair of interengaging members coaxial with said rotatable member, one connected to said rotatable member, a drive for the other of said pair, a clutch for connecting or disconnecting said rotatable member from driving connection with said drive, means for moving one of said pair axially to effect the relative rotation of said interengaging members and to circumferentially adjust said rotatable member with respect to the drive without interrupting the transmission of power thereto, and means operable while the machine is running for effecting the axial adjustment of said rotatable member.”
The plaintiff’s patent application as first filed made claims in generic form sufficiently broad to cover three somewhat different mechanical methods of accomplishing the same practical result; (1) by the use of exterior-ally interengaging helical gears, (2) by differential gears and (3) by coupling external and internal gearing. The Patent Office required divisions and finally allowed the “800” patent with some generic claims but only one specific form—the first above mentioned; and the second was allowed in patent “801” (not involved in this suit); and the third was allowed in patent “802”. In reduction to commercial practice the plaintiff uses the first form specifically allowed in the “800” patent, and it is claimed that the defendant has infringed by using the specific form embraced in the “802” patent, and also has infringed the more general claims of the “800” patent.
It seems clear that the defendant’s device is an infringement on the plaintiff’s device under both the plaintiff’s patents, including claims 1, 4, 8, 9,17, 24, 25 and 26 of the “800” patent; and 1, 14, 19, 20 and 21 of the “802” patent. Defendant’s expert, Mr. Brown, a highly qualified witness, admitted that practically all these claims of both patents of the plaintiff were directly and literally readable upon the defendant’s construction, although he contended that there was not infringement in substance. He disputed that claim 1 of the “800” patent was literally readable on the defendant’s device, but even if this is true, the doctrine of equivalents would seem to fairly apply. His admission of literal infringement is of itself not necessarily conclusive (see Edison v. American etc., Co., 151 F. 767, 773 (C. C. A. 2); Geoghegan v. Ernst, 256 F. 670 (C. C. A. 2); Silver & Co. v. S. Sternau & Co., 258 F. 448 (C. C. A. 2); but when there is added the considerations that the defendant’s running register device was designed to and does effectively produce the same results, on the same type of machine, by only a slightly different mechanical feature, and it is found that the defendant’s activity in making its device was certainly stimulated by the plaintiff’s trade announcement of the completion of its device and the defendant’s was made after inspection of the operation of the plaintiff’s and functions on the same general mechanical principle, the conclusion that there was infringement in substance as well as in. language cannot be escaped.
That the defendant succeeded in obtaining a patent for its device does not raise any presumption of non-infringement. Frick