US140865A - Improvement in treadles of sewing-machines - Google Patents
Improvement in treadles of sewing-machines Download PDFInfo
- Publication number
- US140865A US140865A US140865DA US140865A US 140865 A US140865 A US 140865A US 140865D A US140865D A US 140865DA US 140865 A US140865 A US 140865A
- Authority
- US
- United States
- Prior art keywords
- sewing
- treadles
- machines
- crank
- improvement
- 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
- 210000003127 knee Anatomy 0.000 description 2
- 241001263092 Alchornea latifolia Species 0.000 description 1
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
- F16H—GEARING
- F16H21/00—Gearings comprising primarily only links or levers, with or without slides
- F16H21/10—Gearings comprising primarily only links or levers, with or without slides all movement being in, or parallel to, a single plane
- F16H21/16—Gearings comprising primarily only links or levers, with or without slides all movement being in, or parallel to, a single plane for interconverting rotary motion and reciprocating motion
- F16H21/18—Crank gearings; Eccentric gearings
- F16H21/38—Crank gearings; Eccentric gearings with means for temporary energy accumulation, e.g. to overcome dead-centre positions
-
- 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
- Y10T74/15—Intermittent grip type mechanical movement
- Y10T74/1526—Oscillation or reciprocation to intermittent unidirectional motion
- Y10T74/1553—Lever actuator
- Y10T74/1555—Rotary driven element
-
- 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
- Y10T74/18—Mechanical movements
- Y10T74/18056—Rotary to or from reciprocating or oscillating
- Y10T74/18144—Overcoming dead center
-
- 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
- My invention also consists of a holding pawl combined with the balancewheel and a double crank, the object being to prevent the machine from being turned backward, to which a double crank is liable without a holding-pawl.
- F'gure l is a transverse sectional elevation of my improved machine, and Fig. 2 is a horizontal section.
- A is the balance-wheel.
- B is a pawl-lever pivoted on the crank-shaft.
- D is a pawl pivoted on said lever and bearing on the periph-
- E is a bell-crank suspended on a vertical pivot by the side of the balance-wheel, and supporting the pawllever B on one of its ends, while the other end projects at the front so that the knee of the operator ranges alongside of it when the foot is on the treadle, and can be conveniently used to lift the wheel, through the medium of the bell-crank and pawl, by a slight lateral movement against the bell-crank.
- the lever B has a projection, G, on the under side, whereon there is an inclined plane, against which the bell-crank works to raise the paw1- lever.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Description
Treadles pf Sewing-Machines. No.140,865.
" Patented July 15, 1873.
.nyz.
Ina mar:
P er
Attorneys.
- cry of the balance-wheel.
UNITED STATE PATENT OFFICE.
WILLIAM D. WOOD, OF MOUNT STERLING, 'OHIO, ASSIGNOR TO HIMSELF AND JOHN OLARRIDGE, OF SAME PLACE.
IMPROVEMENT IN TREADLES OF SEWING- MACHINES.
Specification forming part of Letters Patent No. 140,865, dated July 15, 1873; application filed A June 7, 1873.
To all whom it may concern Be it known that I, WILLIAM D. W001), of Mount Sterling, in the county of Madison and State of Ohio, have invented a new and use- .and a bell-crank combined with the treadle mechanism of a sewing-machine, in such manner that the operator can start the machine by a lateral movement of one of the knees, and thus save the labor of starting the wheel by hand. My invention also consists of a holding pawl combined with the balancewheel and a double crank, the object being to prevent the machine from being turned backward, to which a double crank is liable without a holding-pawl.
F'gure l is a transverse sectional elevation of my improved machine, and Fig. 2 is a horizontal section.
Similar letters of reference indicate corresponding parts.
A is the balance-wheel. B is a pawl-lever pivoted on the crank-shaft. D is a pawl pivoted on said lever and bearing on the periph- E is a bell-crank suspended on a vertical pivot by the side of the balance-wheel, and supporting the pawllever B on one of its ends, while the other end projects at the front so that the knee of the operator ranges alongside of it when the foot is on the treadle, and can be conveniently used to lift the wheel, through the medium of the bell-crank and pawl, by a slight lateral movement against the bell-crank. The lever B has a projection, G, on the under side, whereon there is an inclined plane, against which the bell-crank works to raise the paw1- lever.
As a double crank is likely to start backward sometimes, I propose to employ a holding-pawl, K, in connection with the wheel, in
all cases in which I use a double crank, to pre-
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US140865A true US140865A (en) | 1873-07-15 |
Family
ID=2210278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US140865D Expired - Lifetime US140865A (en) | Improvement in treadles of sewing-machines |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US140865A (en) |
-
0
- US US140865D patent/US140865A/en not_active Expired - Lifetime
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