US2732730A - Sernaker - Google Patents
Sernaker Download PDFInfo
- Publication number
- US2732730A US2732730A US2732730DA US2732730A US 2732730 A US2732730 A US 2732730A US 2732730D A US2732730D A US 2732730DA US 2732730 A US2732730 A US 2732730A
- Authority
- US
- United States
- Prior art keywords
- pawl
- ratchet wheel
- pin
- spring
- sernaker
- Prior art date
- 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
Links
- 238000010276 construction Methods 0.000 description 4
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D41/00—Freewheels or freewheel clutches
- F16D41/12—Freewheels or freewheel clutches with hinged pawl co-operating with teeth, cogs, or the like
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/21—Elements
- Y10T74/2133—Pawls and ratchets
- Y10T74/2136—Pivoted pawls
Definitions
- the object of my invention is to provide a unique pawl and ratchet wheel for a flat embroidery machine wherein the take up rollers may be operated individually.
- the drawing shows a view of a pawl and ratchet wheel embodying my invention.
- a lifting pawl 20 is adapted to engage a ratchet wheel 22 which is mounted upon a shaft 12.
- the lifting pawl 20 is pivotally mounted to a lever or link 24.
- the lifting pawl 20, pivoted to the arm 24 by a pin 25 has an opening at one end to receive a coiled spring 26 made of music wire which presses against a free riding spring pin 28.
- the pin 28 causes the spring 26 to exert a force against the ratchet wheel 22 so that pawl 20 will engage the ratchet wheel 22.
- the holding pin 25 has a flat portion on its shaft flat in order that the flat-headed pin 28 will abut the flat surface in order to return to one position, which position is to keep the pawl against the ratchet.
- a set screw through the link 24 abuts the pin 25 to hold it against the link or lever 24.
- a pawl and ratchet wheel adapted for an embroidery machine comprising a pawl having an opening therein, teeth on said ratchet wheel, the free end of said pawl being adapted to engage the teeth on said ratchet wheel, a spring in said pawl opening, a spring pin abutting one end of said spring, and a pawl holding pin pivotally mounting said pawl having a fiat portion so that one end of said spring pin abuts against said flat portion of said spring pin in order to hold said pawl against said ratchet wheel.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Description
Jan. 31, 1956 c. SERNAKER 2,732,730
I PAWL AND RATCHET WHEEL Filed Jan. 18, 195] INVENTOR.
BY 2 I V62 ATTORNEY.
United States Patent ce PAWL AND RATCHET WHEEL Charles Sernaker, Philadelphia, Pa.
Application January 18, 1951, Serial No. 206,591
1 Claim. (Cl. 74-577) The object of my invention is to provide a unique pawl and ratchet wheel for a flat embroidery machine wherein the take up rollers may be operated individually.
Other objects of my invention are to provide in an embroidery machine, a mechanism of the character described, that is easily and economically produced, which is sturdy in construction and which is highly effective in operation.
With the above and related objects in view, my invention consists in the details of construction and combination of parts as will hereinafter he more fully understood when the following description is read in conjunction with the accompanying drawing, in which:
The drawing shows a view of a pawl and ratchet wheel embodying my invention.
A lifting pawl 20 is adapted to engage a ratchet wheel 22 which is mounted upon a shaft 12. The lifting pawl 20 is pivotally mounted to a lever or link 24.
The lifting pawl 20, pivoted to the arm 24 by a pin 25 has an opening at one end to receive a coiled spring 26 made of music wire which presses against a free riding spring pin 28. The pin 28 causes the spring 26 to exert a force against the ratchet wheel 22 so that pawl 20 will engage the ratchet wheel 22.
2,732,730 Patented Jan. 31, 1956 The holding pin 25 has a flat portion on its shaft flat in order that the flat-headed pin 28 will abut the flat surface in order to return to one position, which position is to keep the pawl against the ratchet.
A set screw through the link 24 abuts the pin 25 to hold it against the link or lever 24.
Although my invention has been described in considerable detail, such description is merely intended as illustrative, rather than limiting, and my invention may be variously embodied, and the scope of the invention is to be determined as claimed.
I claim as my invention:
A pawl and ratchet wheel adapted for an embroidery machine comprising a pawl having an opening therein, teeth on said ratchet wheel, the free end of said pawl being adapted to engage the teeth on said ratchet wheel, a spring in said pawl opening, a spring pin abutting one end of said spring, and a pawl holding pin pivotally mounting said pawl having a fiat portion so that one end of said spring pin abuts against said flat portion of said spring pin in order to hold said pawl against said ratchet wheel.
References Cited in the file of this patent UNITED STATES PATENTS 382,947 Brown May 15, 1888 416,331 Githens Dec. 3, 1889 454,737 Hochreutener June 23, 1891 669,986 Gore Mar. 19, 1901 1,268,243 Groebli June 4, 1918 1,314,735 Derby Sept. 2, 1919 1,772,798 Carlson Aug. 12, 1930 1,818,690 Carlson Aug. 11, 1931 2,253,380 Knowland et a1 Aug. 19, 1941 2,522,897 Rotter Sept. 19, 1950
Publications (1)
Publication Number | Publication Date |
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US2732730A true US2732730A (en) | 1956-01-31 |
Family
ID=3442385
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US2732730D Expired - Lifetime US2732730A (en) | Sernaker |
Country Status (1)
Country | Link |
---|---|
US (1) | US2732730A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2933580A (en) * | 1958-05-06 | 1960-04-19 | Joe Davidson | Pivotally balanced members |
US3064485A (en) * | 1960-08-22 | 1962-11-20 | Mitchell A Hall | Cycle starting mechanism |
US3144217A (en) * | 1957-08-12 | 1964-08-11 | Jr Garfield A Wood | Fishing reel |
EP0001799A1 (en) * | 1977-10-28 | 1979-05-16 | Contraves Ag | Locking device for the antenna part of a spacecraft |
US4267748A (en) * | 1978-10-02 | 1981-05-19 | Rite Hite Corporation | Releasable lock mechanism |
US20170138305A1 (en) * | 2012-04-23 | 2017-05-18 | Safran Electronics & Defense | Actuating device for moving a movable cover of a thrust reverser |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US382947A (en) * | 1888-05-15 | Compound-lever punch | ||
US416331A (en) * | 1889-12-03 | Pawl and ratchet | ||
US454737A (en) * | 1891-06-23 | hochbeutener | ||
US669986A (en) * | 1900-03-16 | 1901-03-19 | Daniel W Gore | Pawl and ratchet. |
US1268243A (en) * | 1917-05-25 | 1918-06-04 | Joseph A Groebli | Embroidering-machine. |
US1314735A (en) * | 1919-09-02 | Planoormi | ||
US1772798A (en) * | 1928-11-02 | 1930-08-12 | E Ingraham Co | Spring pawl for ratchet mechanisms |
US1818690A (en) * | 1929-05-15 | 1931-08-11 | E Ingraham Co | Pawl for ratchet-mechanisms |
US2253380A (en) * | 1939-07-25 | 1941-08-19 | Bigelow Sanford Carpet Co Inc | Fabric supporting and feeding apparatus |
US2522897A (en) * | 1947-08-05 | 1950-09-19 | Jack H Rotter | Protective cover for telescopic sight lenses |
-
0
- US US2732730D patent/US2732730A/en not_active Expired - Lifetime
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US382947A (en) * | 1888-05-15 | Compound-lever punch | ||
US416331A (en) * | 1889-12-03 | Pawl and ratchet | ||
US454737A (en) * | 1891-06-23 | hochbeutener | ||
US1314735A (en) * | 1919-09-02 | Planoormi | ||
US669986A (en) * | 1900-03-16 | 1901-03-19 | Daniel W Gore | Pawl and ratchet. |
US1268243A (en) * | 1917-05-25 | 1918-06-04 | Joseph A Groebli | Embroidering-machine. |
US1772798A (en) * | 1928-11-02 | 1930-08-12 | E Ingraham Co | Spring pawl for ratchet mechanisms |
US1818690A (en) * | 1929-05-15 | 1931-08-11 | E Ingraham Co | Pawl for ratchet-mechanisms |
US2253380A (en) * | 1939-07-25 | 1941-08-19 | Bigelow Sanford Carpet Co Inc | Fabric supporting and feeding apparatus |
US2522897A (en) * | 1947-08-05 | 1950-09-19 | Jack H Rotter | Protective cover for telescopic sight lenses |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3144217A (en) * | 1957-08-12 | 1964-08-11 | Jr Garfield A Wood | Fishing reel |
US2933580A (en) * | 1958-05-06 | 1960-04-19 | Joe Davidson | Pivotally balanced members |
US3064485A (en) * | 1960-08-22 | 1962-11-20 | Mitchell A Hall | Cycle starting mechanism |
EP0001799A1 (en) * | 1977-10-28 | 1979-05-16 | Contraves Ag | Locking device for the antenna part of a spacecraft |
US4267748A (en) * | 1978-10-02 | 1981-05-19 | Rite Hite Corporation | Releasable lock mechanism |
US20170138305A1 (en) * | 2012-04-23 | 2017-05-18 | Safran Electronics & Defense | Actuating device for moving a movable cover of a thrust reverser |
US10883446B2 (en) * | 2012-04-23 | 2021-01-05 | Safran Electronics & Defense | Actuating device for moving a movable cover of a thrust reverser |
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