Potter v. Braunsdorf

19 F. Cas. 1132, 7 Blatchf. 97, 1869 U.S. App. LEXIS 1376
CourtU.S. Circuit Court for the District of Southern New York
DecidedDecember 30, 1869
StatusPublished
Cited by1 cases

This text of 19 F. Cas. 1132 (Potter v. Braunsdorf) is published on Counsel Stack Legal Research, covering U.S. Circuit Court for the District of Southern New York primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
Potter v. Braunsdorf, 19 F. Cas. 1132, 7 Blatchf. 97, 1869 U.S. App. LEXIS 1376 (circtsdny 1869).

Opinion

BLATCHFORD, District Judge.

The specification of the reissued patent on which this suit is brought states: “In sewing machines operated with an eye-pointed needle and sewing with a continuous thread or threads, known to me prior to my invention, important defects existed, which operated as serious limitations to their usefulness and prevented their adoption to the extent their other merits demanded. In such prior machines, the material to be sewed was held vertically, by suspending it from points projecting from a plate technically called a baster plate, or in clamps, the body of the material hanging below and from such plate or clamps, and being moved through the machine, or fed to the sewing mechanism, while hanging in such vertical position. This method of holding and feeding the material required that it should be placed upon the' points of the baster plate, or within the jaws of the clamps, by an operator, who, while using his hands for this purpose, could not at the same time properly attend to the sewing. It also threw the whole weight of the material upon that part of it which was held upon the points or in the clamps. Moreover, it was not well adapted for crooked or irregularly cur red seams, and did not allow the operator conveniently to examine or inspect the stitches while the seam was being made, nor did it leave the material free to be directed by the operator conveniently during its passage to the needle, while the machine was in operation, but was applicable only to such seams and parts of garments as could be thus adjusted upon and suspended from the baster plate, or in clamps, and required so much time and labor in adjusting even such seams to the plate or clamps, that it was of limited utility in the branches of manufacture to which the sewing machine was otherwise applicable, or for domestic use. The object of my invention is, to hold and feed the material past' the needle, horizontally instead of vertically, in such manner that the operator is not required to use his hands to hold the material vertically and apply it to the points or jaws of the feed, and, consequently, that he may inspect, guide, and give direction to the seam, during the continuous action of the machine. My invention is to be found, therefore, in the combination of mechanisms for supporting the cloth, holding it, and moving it past tne needle with a regular intermittent action, with each other, and with the sewing mechanism and other essential parts of the sewing machine. The leading members of these combinations are: First. A device which advances the material regularly and horizontally, by an intermittent motion, over and upon the horizontally holding surface through which the needle acts, and over and upon the supporting bed by which the material is supported, and delivers it automatically, without requiring the sewing to be stopped for the purpose of attaching fresh portions of the material to the feeding instrument This advancing device is hereinafter termed a ‘perpetual feed.’ Second. A holding surface, upon which the material immediately about the needle rests, and is borne up horizontally under the thrust of the needle. Third. A receiving plate, so arranged with reference to the feed, as to receive and support the material in its passage from the feed. Fourth. A yielding pressure holder, which rests upon the upper surface of the material, near the needle, and adapts itself to the varieties in the thickness of the material, and holds it to the supporting bed. Fifth. A supporting bed, provided with a throat for the passage of the needle. This supporting bed includes, as one of its parts, what is elsewhere termed, in this specification, the ‘holding surface,’ and the term ‘supporting bed’ is to be so understood wherever it is hereinafter used. Upon this bed the material to be sewed rests, and is supported against the force of gravity, the horizontality of this bed enabling it to support the material while it is in the machine. For greater clearness and certainty, I will here state the functions and mode of operation of each of these parts. The device termed the ‘perpetual feed’ takes hold of and moves forward the material horizontally and regularly, by an intermittent motion, upon and over the horizontally holding surface through which the needle acts, and upon the horizontally supporting bed upon which the material rests, and under the yielding pressure holder, and delivers it upon the receiving plate, which is plaeed behind the feed to receive it, taking hold of a fresh portion of the material, and delivering an equal portion, at each stitch. This feed thus takes hold of the material, moves it forward upon the horizontal supporting bed over the horizontally holding surface, and delivers it perpetually upon the receiving plate, so that any length of seam desired may be fed through and delivered during the continuous action of the machine. Although I have used an endless apron,- furnished with points, as my perpetual feed, I do not intend to limit myself to the use of [1134]*1134sueli an apron, as a revolving circular table or a cylinder may be substituted therefor, the points being inserted in, or made to project from, the curved surface of either of them. The horizontally holding surface upon which the material immediately about the needle is supported, is so constructed and arranged with reference to the feed and needle, that it performs the office of supporting, horizontally, each portion of the material successively, in the line of the seam, against the thrust of the needle, firmly, in its normal, and undistorted condition, so that the stitches, when set, shall be regular and uniform. Each portion of the material in which stitches are to be set throughout the line of the seam, is moved by the feed, stitch by stitch, horizontally, under the needle, and over and upon this horizontally holding surface, where it is held during the passage of the needle, or while the stitch is being made. The receiving plate is so constructed and arranged, with reference to the feed, that it performs the office of receiving the material from the feeding instrument, and supporting it in its passage from the machine, thus insuring the free delivery and passage of the material from the machine, during its operation in sewing a seam, without entanglement with other members of the machine. The form and size of this receiving plate are mere matters of expediency, so long as it retains and perforins its functions, as herein described. The supporting bed holds up the material by simply supporting it against the force of gravity, without requiring the attachment of the material to it, and, at the same time, by its throat, permits the needle to pierce it, and protrude the loop of needle-thread through it. It so holds it up while the feed is moving it forward, and the needle is piercing it, the material resting upon the bed while under the action of the needle. The yielding pressure holder rests upon the upper surface of the material, near the needle, and holds it, by a yielding pressure, to the supporting bed upon which it rests. This holder is so hung or mounted, that it may be readily raised by the operator, to place the material in. or remove it from, the machine, and it will rise and descend during the operation of the machine, and accommodate itself to the varying thicknesses and inequalities of the material or garment being sewed, while it maintains a constant pressure upon the material throughout the whole length of the seam. The combination of these supporting, holding and feeding mechanisms I believe to be new.

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Related

Potter v. Stewart
7 F. 215 (U.S. Circuit Court for the District of Southern New York, 1881)

Cite This Page — Counsel Stack

Bluebook (online)
19 F. Cas. 1132, 7 Blatchf. 97, 1869 U.S. App. LEXIS 1376, Counsel Stack Legal Research, https://law.counselstack.com/opinion/potter-v-braunsdorf-circtsdny-1869.