US67803A - George robinson - Google Patents
George robinson Download PDFInfo
- Publication number
- US67803A US67803A US67803DA US67803A US 67803 A US67803 A US 67803A US 67803D A US67803D A US 67803DA US 67803 A US67803 A US 67803A
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- United States
- Prior art keywords
- cam
- length
- george
- stitch
- robinson
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 238000009958 sewing Methods 0.000 description 10
- 230000001105 regulatory Effects 0.000 description 6
- 230000000875 corresponding Effects 0.000 description 2
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Classifications
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B27/00—Work-feeding means
- D05B27/22—Work-feeding means with means for setting length of stitch
Definitions
- This invention relates to a new and improved attachmentfo r sewing machines, more especially designed for the Wheeler and Wilson machine, whereby the length of stitch may be regulated or varied, as desired, with far greater accuracy and facility than by the ordinary cam-attachment now used for that purpose.
- FIG. 1 is an inverted plan of a portion of the cloth-plate of a sewing machine having my improvement applied to'it, and
- Figure 2 a section of the same, taken in the line a: x, iig. 1.
- A represents a portion of the cloth-plate of a sewing machine, have two' pendent bearings, a m, at its under side, in which thejournals of a shaft, 13, are fitted and allowed to turn freely.
- a knob, C On one end of the shaftBthei-e is a knob, C, for the convenience of turning it.
- This worm-wheel and cam are fitted on a stud, G, attached to the under side of the cloth-plate, and in such a position that the cam F will be in line with the feed of the machine, and the bar stopped thereby, so as to make a greater or less length of stroke by turning the shaft B, which, through the medium of the worm-wheel and screw, turns the cam F, the latter stopping the feed-bar at a greater or less distance, according to the length of radius the cam presents to the feed-bar as the latter comes -in contact with the cam.
- the worm and screw admit of the cam being turned with the greatest facility, and so that the length of stitch may be regulated with the greatest nicety.
Description
e. ROBINSON I Sewing-Machine Attachme nt. I No. 67.803. t T r Patented Aug, H3, 1867.
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GEORGE ROBINSON, OF DETROIT, MICHIGAN. Letters Patent No. 67,803, dated August 13, 1867, I
IMPROVEMENT IN FEBD-REGULATORFOR SEWING MACHINES;
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TO ALL WHOM IT MAY CONCERN:
Be it knownthat I, GEORGE Ronmson, of Detroit, in the county of Wayne, and State of Michigan, have invented anew and improved Stop-Attachment for Regulating the Length of Stitch in Sewing Machines, and that the following description, taken in connection with the accompanying drawings, hereinafter referred to, forms a full and exact specification of the same, wherein I have set forth the nature and principles of my said improvements, by which my invention maybe distinguished from all others of a similar class, togetherwith such parts as I claim and desire to have secured to me by Letters Patent.
, This invention relates to a new and improved attachmentfo r sewing machines, more especially designed for the Wheeler and Wilson machine, whereby the length of stitch may be regulated or varied, as desired, with far greater accuracy and facility than by the ordinary cam-attachment now used for that purpose. In the accompanying sheet of drawings- Figure 1.is an inverted plan of a portion of the cloth-plate of a sewing machine having my improvement applied to'it, and
Figure 2 a section of the same, taken in the line a: x, iig. 1.
Similar letters of reference indicate corresponding parts.
A represents a portion of the cloth-plate of a sewing machine, have two' pendent bearings, a m, at its under side, in which thejournals of a shaft, 13, are fitted and allowed to turn freely. On one end of the shaftBthei-e is a knob, C, for the convenience of turning it. On the shaft 13 there is a screw, D, which gears into .a wormwheel, E, which has a cam, F, formed or cast with it. This worm-wheel and cam are fitted on a stud, G, attached to the under side of the cloth-plate, and in such a position that the cam F will be in line with the feed of the machine, and the bar stopped thereby, so as to make a greater or less length of stroke by turning the shaft B, which, through the medium of the worm-wheel and screw, turns the cam F, the latter stopping the feed-bar at a greater or less distance, according to the length of radius the cam presents to the feed-bar as the latter comes -in contact with the cam.
When a long stitch is required the short radius of the cam-is presented to the feed-bar, and the length of stitch reduced by presenting a longer radius of the cam, the length of stitch beingin accordance with thelength of the radius of the cam presented to the feed-bar.
The worm and screw admit of the cam being turned with the greatest facility, and so that the length of stitch may be regulated with the greatest nicety.
Having thus described my invention, I claim as new, and desire to secure by Letters Patent- The combination of the screw D on shaft B, with the worm-wheel E and cam F on the stud. G, all beingapplied to the cloth-plate A of a sewing machine, to operate in the manner substantially as and for the purpose set forth.
GEORGE ROBIN SON.
Witnesses J ossrn KUHN, Vrcron Lmuxu.
Publications (1)
Publication Number | Publication Date |
---|---|
US67803A true US67803A (en) | 1867-08-13 |
Family
ID=2137326
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US67803D Expired - Lifetime US67803A (en) | George robinson |
Country Status (1)
Country | Link |
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US (1) | US67803A (en) |
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- US US67803D patent/US67803A/en not_active Expired - Lifetime
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