Christman v. Rumsey

5 F. Cas. 655, 17 Blatchf. 148, 58 How. Pr. 114, 4 Ban. & A. 506, 1879 U.S. App. LEXIS 1765
CourtU.S. Circuit Court for the District of Northern New York
DecidedSeptember 10, 1879
StatusPublished
Cited by2 cases

This text of 5 F. Cas. 655 (Christman v. Rumsey) is published on Counsel Stack Legal Research, covering U.S. Circuit Court for the District of Northern New York primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
Christman v. Rumsey, 5 F. Cas. 655, 17 Blatchf. 148, 58 How. Pr. 114, 4 Ban. & A. 506, 1879 U.S. App. LEXIS 1765 (circtndny 1879).

Opinion

BLATCHFORD, Circuit Judge.

This suit is brought on re-issued letters patent granted to John Christman, March 24th, 1S74, for an “improvement in pump filters.” The specification says: “In pointed pump tubes heretofore essayed, difficulties have arisen in keeping them free from clogging and rendering theffi efficient. My invention was made to overcome these difficulties, in which I have fully succeeded. The construction of my apparatus is substantially as follows, referring to the accompanying drawing, which is a side elevation of the filtering point made for driving, affixed to the lower end of a pump tube, with the side grating A broken, to show the wire gauze, C. I form an open grating A, of rods of proper sized wire of a convenient length and form, the upper ends of which are permanently affixed to a collar or head piece, B, on which a screw may be cut, to affix it to the lower end of the pump tube, D. This screw may be cut on the inside, as shown by the drawing, or on the outside, as preferred, the joint being made in any well known way. The open grate A extends down cylindrically in the drawing a sufficient distance, and is thence tapered and brought into a solid point, A', as in the drawing; or it may be made rounded or square, so there is a solid, compact end adapted to the purposes intended. Inside the grating A, I insert another tube, C, made of wire gauze, and covering the spaces between the bars of the grate A, and properly fastened in place, which, I find, makes, in connection with the strong supporting grating, a perfect filter, to be used at the bottom of pump tubes. AYhere it is required, as in quicksands, &c., there may be a filtering medium put inside the wire gauze, to resist the outside pressure; but. for ordinary eases, no such packing is necessary.” The claims of the re-issue are as follows: “1. The com[656]*656bination of a wire gauze, O, with an open grating or guard, A, of sufficient strength for tbe purpose required, and a point, A', constructed substantially as and for tbe purposes described. 2. Tbe combination of. a grating, A, baring apertures through it for the passage of water to the interior, forming the lower end of a pump- tube, with a wire gauze, O, for filtering the water, substantially as described.”

The original letters patent were granted to John Christman, November 2S, 1SG5, for an “improvement in pump filters.” The specification of theoriginal says: “Beit known, that I, John Christman, of the city of Syracuse, N. Y., have invented a new and improved pump filter, and I do hereby declare that the following is a full, clear and exact description! of the construction of the same and the form thereof, when complete, reference being had to the annexed drawings making a part of this specification. The letters used represent the same parts wherever they occur. To enable others skilled in the art to make and use my invention, I will proceed to describe the construction of the filter, and its form when complete and ready for use. I use any kind of common wire and arrange sections thereof in a tubular form, A, so that the longitudinal sections a, a, a, a, &c., will form an open grate. The ends of the wire sections designed for the lower part of the filter are welded together in a compact form, which may be round, pointed or square across. Tbe ends of the wire sections designed for the upper part of the filter are made to pass between two shoulders, b the inner one and c the outer one, forming a part of the round head-piece B, thus keeping them in a circular or tubular form, and, to hold the same firmly, the outer shoulder, c, may be soldered down upon the wire sections, and the same thus held securely in their places. The head-piece will be of sufficient length, so that the upper end thereof may receive the cut of a screw, either on the inside or the outside, as may be desirable, as seen at d, to receive the pump tubo D. Fitting the inside of the wire tube thus formed I insert another tube, C. made of common wire gauze, and the two thus formed make a strong and perfect filter to be used at the bottom of pump tubes. The tube of wire gauze may, in case there is quicksand, be packed with charcoal or other filtering substances, but, for ordinary use, no such packing would be necessary.” The claim of the original patent was this: “A pump filter, composed of the parts A. B and C, substantially as and for the purposes described.”

It is contended, for tbe defendants, that the re-issue is void. The petition for the reissue sets forth, that, by reason of an insufficient or defective specification, the original patent is inoperative or invalid, and that such error arose from inadvertence, accident or mistake, and without any fraudulent or deceptive intention. This is a ground of reissue set forth in section 53 of the act of July 8, 1870 (16 Stat. 203). The decision as to the fact so set forth belonged exclusively to the commissioner of patents, and his action conclusively established that fact. Seymour v. Osborne, 11 Wall. [78 U. S.] 516, 543-545; Herring v. Nelson [Case No. 6,424).

It is further contended, that new matter has been introduced into tbe specification of the re-issue, in violation of section 53 of the act of 1870. It is urged, that the original specification states the invention to be “a new and improved pump filter,” while the re-issued specification states the invention to be “an improvement in pump filters;” that the original claims the whole and nothing less, while the re-issue makes two claims, neither of which claims the whole or includes the collar or head piece B; and that the first two sentences, above cited, in the re-issued specification, are new matter. These two sentences cannot properly be called “new matter,!’ within the meaning of the statute. They do not at all relate to the description or operation of the apparatus of the patentee. The difficulties stated to have existed in prior pointed pump tubes may well have been known to the patentee from hearsay, although the first driven well point he may have seen w’as his own. Certainly, as the patentee’s pump tube is a pointed pump tube, and as it does overcome the difficulties in clogging in such a tube, the presumption is that it wras made to overcome such difficulties, and, therefore, that such difficulties had been heard of by the patentee.

It is further urged that the original specification describes the invention as applicable to all pump filters, W’hether used upon points for driven wells, or upon w’ell tubes used in open w’ells or cisterns or streams, w’hile the re-issued specification introduces new' matter by confining the invention to driven wells only. This is claimed to bo shown by the fact that the original states that “the ends of the wire sections designed for the low'er part of the filter are w’elded together in a compact form, w’hieli may be round, pointed or square across.” In the re-issue it is stated that the open grating, A, is formed of rods of proper sized wire, of a convenient length and form, the upper ends of which are permanently affixed to a collar or head piece, B. and that the open grate extends down cylindrical^ a sufficient distance, and is thence tapered and brought into a solid point, A'. The original states that sections of w’ire are arranged in a tubular form, A, so that the longitudinal sections form an open grate. It is contended, that, as there is no A' in the original drawing, and as A in that drawing includes the whole of the open grate from the w’elded point to the head piece, B, and as, in the re-issue drawing, the cylindrical part is lettered A, and the tapered part is lettered A', the restriction in the re-issue, of the grating A to the cylindrical part above the taper, and the lettering A' in the re

Free access — add to your briefcase to read the full text and ask questions with AI

Related

Electrical Accumulator Co. v. Julien Electric Co.
38 F. 117 (U.S. Circuit Court for the District of Southern New York, 1889)
Wilson v. Coon
6 F. 611 (U.S. Circuit Court for the District of Southern New York, 1880)

Cite This Page — Counsel Stack

Bluebook (online)
5 F. Cas. 655, 17 Blatchf. 148, 58 How. Pr. 114, 4 Ban. & A. 506, 1879 U.S. App. LEXIS 1765, Counsel Stack Legal Research, https://law.counselstack.com/opinion/christman-v-rumsey-circtndny-1879.