Wahl v. N. E. Norstrom Electric Mfg. Co.

19 F.2d 544, 1927 U.S. Dist. LEXIS 1172
CourtDistrict Court, N.D. Illinois
DecidedJune 6, 1927
DocketNo. 5209
StatusPublished
Cited by4 cases

This text of 19 F.2d 544 (Wahl v. N. E. Norstrom Electric Mfg. Co.) is published on Counsel Stack Legal Research, covering District Court, N.D. Illinois primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
Wahl v. N. E. Norstrom Electric Mfg. Co., 19 F.2d 544, 1927 U.S. Dist. LEXIS 1172 (N.D. Ill. 1927).

Opinion

LINDLEY, District Judge.

Plaintiff, Wahl, patentee in patents No. 1,471,536, October 23, 1923, No. 1,479,486, January 1, 1924, and No. 1,487,189, March 18, 1924, charges the defendant, N. E. Norstrom Electric Manufacturing Company, with infringement of each of said patents, and prays for an injunction and an accounting. The defendant asserts invalidity, anticipation, prior invention, and lack of infringement. Defendant also asserts that certain claims of patent No. 1,487,189, being for matter not set forth in the original application, are void, and also insists that there is not sufficient proof of title in plaintiff.

Patent 1,487,189 is chiefly relied upon by plaintiff, the claims in issue being 2, 4, 5, 9, 10, 11, 15, 16, 17, 18, 19, 20, 21, 22, and 23; but claim 5 is typical of what the court conceives constitutes Wahl’s alleged invention. That claim is as follows:

“In a clipper the combination of a ease, a clipper blade carried thereby, a movable clipper blade co-operating with the first mentioned blade, an electromagnet carried by the ease, a circuit for the magnet, a spring carried armature ear co-operating with the electromagnet, a yielding driving connection between the armature bar and the movable clipper blade, means for subjecting the yielding driving connection to tension, and means for adjusting the tension of the spring carried armature bar.”

This device, described by the patentee as an electrical hair clipper intended for use in barber shops, but capable of use for clipping the hair of animals and other material, is so constructed as to be operated by an alternating electrical current through an electromagnet co-operating with an armature bar in such manner that the alternation of the eur-rent will drive the armature bar to operate the movable clipper blade transversely on the fixed blade. This armature bar is held in proper position with relation to the fixed clipper blade by means of a spring tension device, which also serves as the yielding driving connection mentioned in the claim quoted, and is a material element in Wahl’s device. The armature bar is attached to the blade spring, which is mounted in the ease by means of a bolt, which exercises its strength to force the blade spring against the end of an adjusting screw. The blade spring rests against a shoulder of the case, so that after the bolt is tightened the spring is forced into contact with the adjusting screw. This spring driving member is attached to and drives the 'movable clipper blade, which co-operates or reciprocates with the stationary blade. Screws provide for adjusting the movable blade so that it will press against the stationary blade. The remaining details of construction appear in the patent, and are not material to the discussion here.

Plaintiff’s device was the first .of the kind to be operated by an alternating current. It operates upon a 60-eyele alternating current, which constitutes a 120-eyele basis. Previous electric clippers operated upon a basis of 20 cycles per second. Wahl produced a device which successfully cut human hair through the means of the alternating electrical current, with an attachment so delicate in accuracy as to run to one ten-thousandths of an inch, operating upon a 120-cycle basis. He included in his device many elements that were old, but in his combination he made use of the yielding driving connection, which is absolutely essential to the successful operation of his clipper. By means of the adjusting screws he was able to prevent the difficulties that would otherwise attach, and accomplished a vibratory movement of the driving connection -with the least possible friction and wear. These elements, in combination with the elements that are old, put together in this new device constituted a successful clipper, which has become of great commercial value.

in the prior art Palmer, No. 432,433; Burgon, No. 468,217; Martin, No. 874,522; Bowman, No. 1,383,977; Melchior (British patent) No. 27,356; Cox (British patent) No. 789; Preston (British patent) No. 15,-791 — are all slow-moving devices for cutting animal hair; all except the last are of make and break variety, with the frequency of operation of .20-cycles. Consequently the delicacy of adjustment accomplished by [546]*546plaintiff was not present, nor was it essential. Preston operated Ms device pneumatically with a comparatively slow motion. Pryee, No. 985,547, and Broad, No. 1,197,338, are massage vibrating devices having protruding elements, the coils in which are adapted for connection with a 60-eyele vibrating current, so that the armature will vibrate at the same speed as the armature in the patent in suit; but they do not disclose the yielding driving connection with the delicate adjustment, or the two co-operating elements with their interrelating functions of Wahl’s device.

Daley, No. 1,254,990, and Sangebuseh, No. 1,303,975, constructed razors wMeh moved slowly; Daley upon a make and break circuit, and Sangebuseh upon an alternating current. The latter moved his blade transversely, as distinguished from Daley. Neither of them had the yielding driving connection in the sense those words are used by WaM. Daley lacked two co-operating active elements. Neither of them show adjusting features necessary to aeMeve the delicate operation of WaM. Stops, wMeh Wahl avoids were indispensable in their devices. Niland constructed a clipper attachment for a massage vibrator, operated by a motor outside the instrument. His device was of slow-moving type, and of such character that friction and wear would manifestly result early in use, and meets none of the results achieved by WaM.

During the consideration of WaM’s application, the Patent Office cited, and had before it, Palmer, Cox, Burgon, Bowman, MelcMor, Hawtree, Grace, Bown (British), Sangebuseh, Steames, Appleyard (British), Johnson, No. 1,351,041, Ashberry, No. 526,-359, and all the claims now relied upon were allowed over these references, evidently upon the theory that none of them achieved the yielding drivrng connection between the armature and the movable blade, whereby WaM secured downward pressure of the armature bar, yielding to its seat as distingMshed from a rigid holding; -The .reason for the use of such a blade apparently is that the driving blade should be held yieldingly to its work, because the power of the electromagnet in machines of tMs character is not great, and if the connection were rigid, as shown in the prior art, conditions would arise wMeh would set up an excessive friction, and seriously interfere with the proper operation of the clipper, in view of the Mgh rate of speed of the device. Many of the prior art devices are flexible shaft-driven machines, operating at an extremely low rate of speed. The court finds no instance of a Mgh speed clipper -for human hair in the prior art. None of the old devices show a spring armature bar, none of them have the delicate adjustment features of WaM, and the high speed vibrators and razors cited are entirely different combinations, which do not anticipate WaM.

Defendant admits that the prior art devices cannot accomplish WaM’s result, but asserts that the latter acquired Ms skill from the prior .art. If we take the elements of all of the prior patents and inventions cited, we cannot from a combination of selected elements from those devices construct the plaintiff’s device, nor do they teach us the art of making plaintiff’s device. In claims as to the structure described in his patent, and as claimed in claims 2, 5, and 23, the court is of the opinion that the plaintiff achieved invention, that he has not been anticipated, and that no prior invention has been cited against him.

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Related

Brown & Sharpe Co. v. Wahl
85 F.2d 458 (Seventh Circuit, 1936)
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9 F. Supp. 902 (N.D. Illinois, 1935)
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1 F. Supp. 268 (D. Maryland, 1932)
Norstrom v. Wahl
39 F.2d 791 (Seventh Circuit, 1930)

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Bluebook (online)
19 F.2d 544, 1927 U.S. Dist. LEXIS 1172, Counsel Stack Legal Research, https://law.counselstack.com/opinion/wahl-v-n-e-norstrom-electric-mfg-co-ilnd-1927.