This controversy relates to an alleged infringement by the petitioner, a New Jersey corporation, of United States letters patent No. 271,426, issued to the respondent on January 30, 1883, for 'a new and improved sewing-machine treadle.' For convenience the petitioner will be hereafter referred to as the Singer Company and the respondent as Cramer.
The treadle device used by the Singer company on its sewing machines, which it was charged infringed the Cramer patent, was covered by letters patent No. 306,469, dated October 14, 1884, issued to the Singer company as the assignee of one Diehl.
The file wrapper and contents exhibit the following proceedings in the Patent Office respecting the Cramer patent: The [192 U.S. 265, 266] original application was filed on May 25, 1882, and was for the grant of letters patent to Cramer 'as the inventor for the invention set forth in the annexed specification.' The specification and oath thereto read as follows:
shaped, the brace 'C' cast in one piece, and the treadle bar and platform on the bar is also cast in one piece.
shaped to receive the ends of the treadle bar.
shaped to receive the ends of treadle bar 'B.' 'D' represents nut on end of cross brace immediately below treadle bar. 'State of California, County of Tuolumne.
The application was referred to the examiner, who, on May 29, 1882, wrote to Cramer, in care of his attorneys, as follows:
On August 3, 1882, the following substitute specification, concluding with an oath similar to that appended to the prior specification, was sent to the Patent Office:
On August 14, 1882, the examiner wrote Cramer, in care of his attorneys, as follows:
Following this rejection there was filed a revocation of the power of attorney which had been executed by Cramer in favor of the attorneys who had theretofore conducted the proceedings, and an appointment of other attorneys for the further prosecution of the application. On October 17, 1882, the substituted attorneys sent to the Patent Office a new drawing and an amendment of the specification on file, which amendment consisted in canceling all the specification except the [192 U.S. 265, 269] signature and substituting for the matter so stricken out the following:
Accompanying the new specification was the following communication, signed by the attorney:
On October 19, 1882, the examiner wrote Cramer, in care of his attorney, as follows:
To this letter the following reply was made by the attorneys for Cramer:
A reconsideration is respectfully asked.'
This closed the correspondence. Soon afterwards notification was given that the patent had been allowed, and letters patent embodying the specification last above set forth, headed 'Treadle for sewing machines,' etc., were issued, bearing date January 30, 1883. The following is a fac simile of the drawing referred to in the specification:
The alleged infringing device is delineated on the following fac simile of the first sheet of the drawing attached to the Diehl patent: [192 U.S. 265, 273]
In this specification Diehl declared his invention to consist in 'certain new and useful improvements in sewing-machine stands and treadles;' and the object to be 'to secure a permanent and reliable support and adjustment for both the band wheel and treadle, and to preserve their respective relative positions, so that they will always cooperate to produce the best results with the least danger of friction or binding.' The claims were five in number, as follows:
To recover damages for alleged infringement of the first claim of the Cramer patent, in the use by the Singer company of the Diehl device just referred to, Cramer brought this action at law against the Singer company on October 8, 1896, in the circuit court of the United States for the northern district of California. By amendment of the declaration the recovery was limited to damages sustained by infringements committed within the northern district of California. In the answer filed on behalf of the Singer company,-in addition to excepting to the jurisdiction of the court and pleading as res judicata a former judgment rendered in favor of the defendant in an action brought by Cramer against one Fry, an employee of the Singer company (68 Fed. 201),-defenses were interposed of want of novelty and utility and lack of invention, and infringement was denied.
A trial was had which resulted (by direction of the court, sustaining the plea of res judicata) in a verdict and judgment for the defendant. This judgment was reversed by the circuit court of appeals for the ninth circuit. 35 C. C. A. 508, 93 Fed. 636. On a second trial a verdict was rendered for Cramer and judgment was entered thereon for the sum of $12, 456. On appeal this judgment was affirmed by the circuit court of appeals for the ninth circuit. 48 C. C. A. 588, 109 Fed. 652. A writ of certiorari was thereafter allowed by this court. [192 U.S. 265, 275] Messrs. Charles C.Linthicum, Charles K. Offield, and Milton A. Wheaton for petitioner.
Mr. John H. Miller for respondent.
Statement by Mr. Justice White:
Mr. Justice White, after making the foregoing statement, delivered the opinion of the court:
Sixty-eight exceptions were taken by the Singer company during the trial of the action in the circuit court, and were pressed upon the attention of the circuit court of appeals in sixty-nine assignments of error. These exceptions were all in effect relied upon in the argument at bar; but from the view we take of the case it is unnecessary to consider and decide any other assignment than that based upon the exception to the refusal of the court, at the close of all the evidence, to instruct a verdict for the defendant on the ground that 'no infringement whatever had been shown.' As in each of the patents in question it is apparent from the face of the instrument that extrinsic evidence is not needed to explain terms of art therein, or to apply the descriptions to the subject-matter, and as we are able, from mere comparison, to comprehend what are the inventions described in each patent, and, from such comparison, to determine whether or not the Diehl device is an infringement upon that of Cramer, the question of infringement or no infringement is one of law, and susceptible cf determination on this writ of error. Heald v. Rice, 104 U.S. 737 , 26 L. ed. 910; Market Street Cable R. Co. v. Rowley, 155 U.S. 621, 625 , 39 S. L. ed. 284, 287, 15 Sup. Ct. Rep. 224.
Whether error was committed in refusing to direct a verdict is, then, the question to be decided. The claims of the Cramer patent are two in number, and read as follows:
Infringement is charged only in respect to the first claim. In substance, the contention for Cramer is that the conception or idea of the practicability and desirability of utilizing a vertical double brace as a support for a sewing-machine treadle was new with Cramer, and the combination devised by him produced such new and useful results, and exhibited such an exercise of the inventive faculty, as to cause the patent to be a pioneer, and, therefore, entitle the patentee to demand that the claim of the patent should be broadly and liberally construed. For the Singer company it is contended that the availability of use of a vertical cross brace as a support for a sewing-machine treadle was apparent to any person possessing ordinary mechanical skill, that the invention in question if patentable was in no just sense one of a primary nature, and that the combination described by Cramer is to be restricted narrowly to the mere details of the mechanism described as constituting the combination. We must first determine which of these contentions is correct.
Discussing the significance of the term 'pioneer' as applied to a patented invention, this court, in Westinghouse v. Boyden Power Brake Co. 170 U.S. 537 , 43 L. ed. 1136, 18 Sup. Ct. Rep. 707, said (p. 561, L. ed. p. 1145, Sup. Ct. Rep. p. 718):
To ascertain whether the patented invention of Cramer is entitled to be embraced within the term 'pioneer' as just defined. we will consider it in connection with the state of the art.
In the history of the art it is unquestioned that, long prior to the application by Cramer for the grant of the patent in question, devices similar to the vertical cross brace C and the lower cross bar or tie rod D, shown in the drawing of the Cramer patent, were commonly employed in sewing machines. This is conceded by Cramer in statements made in the progress of his application through the Patent Office. Thus, in the specification which forms a part of the patent the vertical brace C is referred to (italics not in original) as 'the common cast-iron brace C,' and 'the usual cast-iron double brace;' while in the first of the proposed specifications, as well as in that which was finally adopted, the lower bar or tie rod D is referred to (italics not in original) as 'the common cross brace or cross bar.' And in both the first and second specifications the usual purpose subserved in sewing machines by this cross bar was 'to keep them (the machines) from spreading apart.' It is, of course, obvious that such was also the purpose of the employment of the vertical double or cross brace.
The vertical double cross brace C, as shown in the Cramer drawing, is a solid piece of casting. But it is also an undisputed fact that, long prior to the alleged invention of Cramer, it was a well-known method of construction when revolving [192 U.S. 265, 278] or oscillating shafts were to be placed in bearings or supports, to have both bearings or supports of such shafts attached to a solid metal casting. Instances of such practices, testified to by witnesses, may be referred to. One was a device to hold a saw mandrel or saw arbor, the former being cast in one piece for the purpose of connecting both journals of the arbor to keep it in absolute line. Another device is the head stock of an ordinary engine lathe or machine lathe, where, in order to have a proper working machine, it is absolutely necessary that the shaft bearings shall be in exact alignment with each other, and firmly in one place. Still another illustrative device employed for a great many years is embodied in a highspeed engine. So, also, in the sewing-machine art, as evidenced by the Wilcox patent No. 106,242 of date August 9, 1870, to be hereafter noticed, the legs of sewing machines had long before Cramer's application been used as bearings for treadle bars, the bearings being cored out of the leg castings.
A vertical cross brace and a lower cross brace or tie rod being common adjuncts of sewing machines at the time of Cramer's alleged invention, and it being also customary to support the lower cross rod or brace in the web of the legs of sewing machines and to utilize the legs as bearings, and it being old in machinery to employ solid castings as bearings or supports for oscillating shafts to support the lower cross rod or brace in where a fixed alignment was essential, we readily conclude that there was no merit in the mere conception or idea that a vertical double brace was capable of being advantageously utilized as bearings for sewing-machine treadles, and that the devising of means for so utilizing such a brace did not involve such an exercise of the inventive faculty as entitled Cramer to assert in himself a right to claim a patent broadly for the use in combination of a vertical double brace and a sewing-machine treadle. In view of this, and of the fact that the principal elements of the Cramer combination were old, we hold that the Cramer patent was not a primary one, and that it is not, therefore, entitled to receive the broad construction which has been claimed for it. Let us, therefore, [192 U.S. 265, 279] examine the first claim of the patent in connection with the proceedings in the Patent Office anterior to the allowance of the patent, in order to fix its precise import, as a preliminary to considering whether, as correctly construed, it is infringed by the Singer appliance. The claim reads as follows:
In the first specification sent to the Patent Office, the object sought to be attained is declared to be the elimination of the noise caused by the operation of a loose treadle, whether used in sewing machines or other machinery. The applicant evidently had in mind treadles which oscillated upon rigid bars and rested on cone bearings or analogous supports, attached to the rigid bars by set screws,-such bearings needing adjustment from time to time as the friction of the parts from the operation of the treadle caused wear and looseness of the parts. It was recited that the treadle bar and the platform on such bar (i. e., the foot rest) was to be cast as one piece. The invention was declared to consist 'in having the ends of the treadle bar V-shaped to fit in hole in brace C, also heart shaped to receive the ends of the treadle bar.'
The application based upon this first specification was rejected, as mentioned in the statement of facts, upon a reference to the patent to G. W. Gregory, No. 256,563, April 18, 1882, which the examiner stated exhibited 'the alleged invention.' Gregory termed his invention 'an improvement in treadle supports for sewing machines.' It is illustrated in the following fac simile of one of the figures of the drawing of the patent: [192 U.S. 265, 280]
The invention consisted in attaching to the lower cross bar or rod of a sewing machine two devices styled collars, each collar having two circular openings, one above the other. The upper opening contained a V- shaped bearing. The cross bar was fitted into the lower opening. The treadle or foot rest was provided on each side with short projections termed ears, which fitted on the V-shaped bearings in the upper portion of each collar. The specification contained the following statement:
At the close of the descriptive portion of the specification it was further stated:
No. 106,242 was a patent granted to C. H. Willcox on August 9, 1870. It covers the following device: [192 U.S. 265, 281]
The device shows the character of treadle support now employed in the Willcox & Gibbs sewing machine. The stand is devoid of a vertical cross brace, the legs of the machine being braced near the bottom by the ordinary cross bar or tie rod. Just above this rod is exhibited the invention, being a 'rockshaft B, beveled at the ends, and provided with V- shaped bearings b, extending to the center of motion of the rockshaft B, and supported in a V-shaped bearing seat a, in combination with a treadle movement.' Elsewhere in the specification the bearings or supports in legs of the machine to receive the ends of the rockshaft B are referred to as 'V-shaped bearings.' The statement is also made that 'The bar is prevented from having any undue lateral movement by the washers upon the ends of the tie rod c, which holds the lower part of the frame together.' An alternate mode of conatruction of the bearings to support the rockshaft was thus described (italics not in original):
Although the first refusal to allow a patent was made on May 29, 1882, it was not until August 3 following that the attorneys for Cramer transmitted an amended application to the Patent Office. In the substituted specification the object to be attained is stated as in the previous specification. An addition to the combination was made, however, in the use of what were styled 'mufflers,' against which it was said the ends of the treadle bars were to bear. A patent was again refused, however, the examiner noting that 'applicant's amended claims are met by the patent to J. E. Donovan, June 28, 1881, No. 243,529,'
The drawing of the Donovan patent exhibits a sewing-machine stand containing a vertical double brace. One form of treadle bar constituting a part of the invention was represented as situated just below the vertical cross brace, and as having a rounded edge, supported in V-shaped bearings, in the legs or sides of the frame. A shouder was indicated on each end of the bar, and a substitute device was also shown called a button fastener, which was to be attached from the outside of the frame to meet the end of the bar. It was said in the specification that the treadle bar might be made of cast iron and cast on and with the treadle. It was further stated ( italics not in original):
Several modified forms of ordinary knifeedge bearings and inclined fastening and adjusted devices were also shown. In such modified forms the treadle was represented as designed to oscillate on a rigid bar, in oblong grooves therein; lugs, having knifeedge bearings underneath, being cast on each side of the treadle. Adjustable collars were shown, fastened to the shaft or bar, with inclined lugs on the side of the collars, [192 U.S. 265, 283] projecting laterally over and resting against shoulders on the lugs upon each side of the treadle. The object of the invention was declared to be ( italics not in original) 'to secure a more substantial table frame to the driving mechanism, and to provide adequate means for the employment of V- shaped treadle bearings, so as to obviate the difficulty heretofore occasioned by lost motion, consisting in vertical and endwise play of the treadle bar or shaft.' It was further observed by the applicant just preceding his statement of claims as follows (italics not in original):
Following the second rejection of his application, Cramer changed his attorneys as mentioned in the statement of facts. In the specification drafted by the new attorneys, and which became the basis of the allowed patent, the asserted invention was limited to its use in sewing machines, eliminating the statement of its adaptability 'in other machinery.' Concerning the 'mufflers,' which in the previous specifications were simply referred to as bearing against the end of the treadle bars, or as being on the ends of such bars, the following statement was made (italics not in original):
It is not a strained deduction that the elaborate provision just referred to, respecting the mode of use of, and the purpose to be subserved by, the mufflers, was, in part at least, induced by the statement in the Willcox and Donovan patents above quoted, concerning the difficulties which existed in connection with the use of knife-edge or Vshaped bearings. Be this as it may, however, we are of opinion that the Patent Office, after twice refusing to allow the patent because of the prior patents referred to, was led to take favorable action, owing to the peculiar form of the described bearing, when situated in a vertical cross brace such as was shown in the drawing, with the described accessories, and that it was the purpose of the Patent Office to limit the patent to the particular device of treadle bar and bearing described and shown when employed in combination with a particular form of vertical cross brace. And this view is supported by the claim in question. It contains words of limitation. It is recited therein that the combination is to be 'substantially as specified,' that is, as described in the specifications and shown in the drawings. Westinghouse v. Boyden Power Brake Co. 170 U.S. 537, 558 , 43 S. L. ed. 1136, 1144, 18 Sup. Ct. Rep. 707. On referring to the specification we find it there expressly declared that the invention consisted 'in the construction and combination of parts hereinafter fully described and claimed, reference being had to the accompanying drawing.' Nowhere, either expressly or by reasonable inference, is it asserted that simply the best or a preferable construction of the whole or any part of the combination is what is described. On the contrary, starting with the well-known vertical cross brace, a [192 U.S. 265, 285] usual accessory to sewing machines, a specific mode of construction of the treadle bar and of the bearings or supports in the vertical cross brace is set forth, and the specification is concluded with the following declaration (italics mine):
To prevent a broadening of the scope of the invention beyond its fair import, in the light of the circumstances surrounding the issuance of the patent, the words of limitation contained in the claim must be given due effect, and, giving them such effect, the statement in the first claim of the elements entering into the combination must be construed to refer to elements in combination having substantially the form and constructed substantially as described in the specification and shown in the drawing.
Having determined the proper construction of the claim of the Cramer patent, which is relied upon, it remains only to consider whether, as correctly construed, infringement resulted from the employment by the Singer company of the device covered by the Diehl patent. We find no difficulty in reaching a conclusion on this branch of the case. The treadle supports devised by Diehl, though they serve the same purpose as the device described and shown in the Cramer patent, are substantially different in construction. Irrespective of the question whether the treadle in the Diehl device is hung in the vertical cross brace proper, or in an addition thereto properly to be regarded as the lower cross rod or cross tie of the machine, it is manifest that the bearing is essentially different in construction from that of Cramer, and is not adapted to receive an oscillating bar; while the treadle is not supplied with long projections fitted to oscillate in the vertical cross bar on bearings therein, but is constructed to turn on point center screws which fit tightly in circular openings in projections from the vertical cross bar. There is [192 U.S. 265, 286] no substantial identity in the character of the two devices, unless, by substantial identity, is meant every combination which produces the same effect. The differences between the Diehl device and the Cramer construction are substantial, and not merely colorable.
The trial court should have granted the motion to direct a verdict for the defendant. In affirming the action of the trial court in overruling the motion, the Circuit Court of Appeals erred, and its judgment must, therefore, be reversed. The judgment of the Circuit Court is also reversed and the cause is remanded to that court with directions to grant a new trial, and for further proceedings not inconsistent with this opinion.
Reversed and remanded.
Mr. Justice McKenna took no part in the decision of this cause.