US3837306A — Portable lightweight hand-held sewing machine

Claim 1

Independent Claim 433 words

A portable lightweight hand-held sewing machine comprising a housing having a handle adapted to be hand-held, having a base portion, and having an upper portion disposed over the base portion and spaced therefrom, with both the base portion and the upper portion spaced from the handle, said base portion of the housing including a horizontal upwardly facing throat plate, said upper portion of the housing including: a downwardly facing plate having an aperture therein, said downwardly facing plate further having a lip extending forwardly of the aperture and a back portion extending backwardly of the aperture, a vertical presser foot carrier rod extending through said aperture and having a lower portion disposed intermediate the downwardly facing plate and the throat plate, a presser foot depending from the lower end of the rod, said rod having an upper portion extending above the downwardly facing plate and having a vertically extending slot aperture with an upper wall, means for supporting the presser foot carrier rod for reciprocating vertical movement, spring means for urging the presser foot toward a working position against the throat plate; and means for raising the presser foot carrier rod to a nonworking position and for locking it in the nonworking position, comprising: a raising and locking pin having a shank slidably and pivotally received in and extending through the slot aperture in the upper portion of the presser foot carrier rod and disposed intermediate the upper wall of the slot aperture and the downwardly facing plate, said shank having a back portion extending backwardly of the rod over the back portion of the downwardly facing plate and a forward portion extending forwardly of the plate lip when the presser foot is in its working position, said raising and locking pin further having a head comprising a downwardly extending lock foot clearing the plate lip and extending downwardly thereof when the presser foot is in its working position, said raising and locking pin moveable vertically to move therewith the presser foot carrier rod upwardly from the presser foot working position to the nonworking position and to move the pin lock foot to a position in which it is above the lip of the downwardly facing plate, said pin additionally moveable backwardly within the presser foot carrier rod slot aperture until the pin lock foot is over said lip to lock therewith when released, with the spring means urging the presser foot carrier rod downwardly, and with the upper wall of the slot aperture in the rod pressing downwardly against the pin shank and thereby pressing the lock foot against the plate lip.

Claim 2

Dependent Claim 433 words

A portable lightweight hand-held sewing machine comprising a housing having a handle adapted to be hand-held, having a base portion, and having an upper portion disposed over the base portion and spaced therefrom, with both the base portion and the upper portion spaced from the handle, said base portion of the housing including a horizontal upwardly facing throat plate, said upper portion of the housing including: a downwardly facing plate having an aperture therein, said downwardly facing plate further having a lip extending forwardly of the aperture and a back portion extending backwardly of the aperture, a vertical presser foot carrier rod extending through said aperture and having a lower portion disposed intermediate the downwardly facing plate and the throat plate, a presser foot depending from the lower end of the rod, said rod having an upper portion extending above the downwardly facing plate and having a vertically extending slot aperture with an upper wall, means for supporting the presser foot carrier rod for reciprocating vertical movement, spring means for urging the presser foot toward a working position against the throat plate; and means for raising the presser foot carrier rod to a nonworking position and for locking it in the nonworking position, comprising: a raising and locking pin having a shank slidably and pivotally received in and extending through the slot aperture in the upper portion of the presser foot carrier rod and disposed intermediate the upper wall of the slot aperture and the downwardly facing plate, said shank having a back portion extending backwardly of the rod over the back portion of the downwardly facing plate and a forward portion extending forwardly of the plate lip when the presser foot is in its working position, said raising and locking pin further having a head comprising a downwardly extending lock foot clearing the plate lip and extending downwardly thereof when the presser foot is in its working position, said raising and locking pin moveable vertically to move therewith the presser foot carrier rod upwardly from the presser foot working position to the nonworking position and to move the pin lock foot to a position in which it is above the lip of the downwardly facing plate, said pin additionally moveable backwardly within the presser foot carrier rod slot aperture until the pin lock foot is over said lip to lock therewith when released, with the spring means urging the presser foot carrier rod downwardly, and with the upper wall of the slot aperture in the rod pressing downwardly against the pin shank and thereby pressing the lock foot against the plate lip.

Claim 3

Dependent Claim 106 words

A sewing machine as in claim 1 including a side wall of the housing having a side facing opening, a spool spindle having a stem extending outwardly of the housing through said opening therein and having an anchor back portion disposed inwardly of the side wall, means for pivotally supporting the anchor portion of the spindle to allow pivotinG the spindle between a storage position in which the spindle stem is adjacent and substantially parallel with a portion of the side wall and a working position in which the spindle stem extends outwardly of the housing side wall and is substantially perpendicular to a portion thereof.

Claim 4

Dependent Claim 329 words

A lightweight, hand-held, chain stitching sewing machine comprising: a housing including an upwardly facing work support surface having means defining a needle aperture and a feed dog aperture in the work support surface; a thread carrying eyed needle and needle support means secured to the housing for endwise reciprocation of the needle along a vertical path through the needle aperture; a loop taking hook and hook support means secured to the housing for periodic movement of the hook along a defined path below the work support surface; means for feeding a work fabric along the work support surface and over the needle aperture in a defined direction transverse to the needle path, said feeding means including a feed dog having a fabric engaging portion which protrudes at least intermittently upwardly through said feed dog aperture in the work support surface and a wall portion located below the work support surface adjacent and facing the needle path, said wall portion having means for engaging thread loops extending thereto and coming into contact therewith, and feed dog support means secured to the housing for periodic movement of the feed dog along a defined path; means for driving the needle support means, the hook support means and the feed dog support means in such timed relationship that while the needle is moving up from the lowest position along its vertical path, a thread loop forms and extends from the needle toward said wall portion of the feed dog, as the needle continues moving up the hook moves toward the needle and engages said loop, and the feed dog and said wall portion thereof move, as the needle moves up, in a direction opposite the direction in which the hook moves to engage said loop, whereby said wall portion of the feed dog tends to engage a loop extending towards it from the needle and to move the loop toward the approaching hook to thereby facilitate engagement of the loop by the hook.

Claim 5

Dependent Claim 329 words

A lightweight, hand-held, chain stitching sewing machine comprising: a housing including an upwardly facing work support surface having means defining a needle aperture and a feed dog aperture in the work support surface; a thread carrying eyed needle and needle support means secured to the housing for endwise reciprocation of the needle along a vertical path through the needle aperture; a loop taking hook and hook support means secured to the housing for periodic movement of the hook along a defined path below the work support surface; means for feeding a work fabric along the work support surface and over the needle aperture in a defined direction transverse to the needle path, said feeding means including a feed dog having a fabric engaging portion which protrudes at least intermittently upwardly through said feed dog aperture in the work support surface and a wall portion located below the work support surface adjacent and facing the needle path, said wall portion having means for engaging thread loops extending thereto and coming into contact therewith, and feed dog support means secured to the housing for periodic movement of the feed dog along a defined path; means for driving the needle support means, the hook support means and the feed dog support means in such timed relationship that while the needle is moving up from the lowest position along its vertical path, a thread loop forms and extends from the needle toward said wall portion of the feed dog, as the needle continues moving up the hook moves toward the needle and engages said loop, and the feed dog and said wall portion thereof move, as the needle moves up, in a direction opposite the direction in which the hook moves to engage said loop, whereby said wall portion of the feed dog tends to engage a loop extending towards it from the needle and to move the loop toward the approaching hook to thereby facilitate engagement of the loop by the hook.

Claim 6

Dependent Claim 61 words

A chain stitching sewing machine as in claim 3 wherein the means for engaging thread loops comprise a loop assist projection affixed to the wall portion of the feed dog and extending toward the needle, said loop assist projection tending to engage successive loops extending toward it from the needle and to move said loops toward the hook for engagement thereby.

Claim 7

Dependent Claim 44 words

A chain stitching sewing machine as in claim 4 wherein the hook includes a loop taking portion which is disposed between the needle and said loop assist projection for at least a portion of the periodic movement of the hook along the defined path.

Claim 8

Dependent Claim 80 words

A chain stitching sewing machine as in claim 5 wherein the loop engaging porion of the hook terminates in a tip facing away from the needle toward said wall portion of the feed dog, and wherein the hook further includes a needle engaging portion which is further away from said wall portion of the feed dog than the hook tip and engages the needle for at least a portion of the periodic movement of the hook along its defined path.

Claim 9

Dependent Claim 37 words

A chain stitching sewing machine as in claim 6 wherein the hook intercepts the vertical path of the needle for at least a portion of its periodic movement and deflects the needle tip from its vertical path.

Claim 10

Dependent Claim 70 words

A chain stitching sewing machine as in claim 7 wherein the needle support means comprises a stiffly resilient plate extending away from the needle along a plane including the vertical path of the needle, means for slidably supporting the plate within the housing for vertical reciprocation of the plate, and biasing means extending from the housing and engaging said plate to bias the plate toward one side of its plane.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1977-09-23	1978-03-25	1978-09-24	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1981-09-23	1982-03-25	1982-09-24	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1985-09-23	1986-03-25	1986-09-24	$7700.00	Window Closed / Lapsed

Portable lightweight hand-held sewing machine

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