US175386A - Improvement in sewing-machine treadles - Google Patents
Improvement in sewing-machine treadles Download PDFInfo
- Publication number
- US175386A US175386A US175386DA US175386A US 175386 A US175386 A US 175386A US 175386D A US175386D A US 175386DA US 175386 A US175386 A US 175386A
- Authority
- US
- United States
- Prior art keywords
- sewing
- foot
- improvement
- machine
- treadle
- 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
- 210000001737 Ankle Joint Anatomy 0.000 description 10
- 210000002683 Foot Anatomy 0.000 description 10
- 210000003423 Ankle Anatomy 0.000 description 8
- 210000003108 Foot Joints Anatomy 0.000 description 2
- 210000002414 Leg Anatomy 0.000 description 2
- 210000004394 hip joint Anatomy 0.000 description 2
- 210000000629 knee joint Anatomy 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
- H01H3/14—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch adapted for operation by a part of the human body other than the hand, e.g. by foot
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
- G05G1/00—Controlling members, e.g. knobs or handles; Assemblies or arrangements thereof; Indicating position of controlling members
- G05G1/30—Controlling members actuated by foot
- G05G1/40—Controlling members actuated by foot adjustable
- G05G1/405—Controlling members actuated by foot adjustable infinitely adjustable
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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
- Y10T74/20—Control lever and linkage systems
- Y10T74/20576—Elements
- Y10T74/20888—Pedals
- Y10T74/20894—Treadles
Definitions
- N-FETERS PHOTO-Lfi'HOGRAFHER. WASHINGTON. D C.
- the objectof my invention is to prevent motion at either the knee or hip joints in running the sewing-machine; and this is accomplished by making the axis of the treadle and the ankle-joints to coincide, and the foot and treadle move in the arc of a circle of which the ankle-joint is the center, thereby saving that unnecessary exertion and waste of power occasioned by the motion of the legs whenever the ankles are in any other position.
- A represents the frames of the sewing-machine, which are of the usual character; B, the foot-board of the tr'eadle; G, thejournals or pivots on which the treadle swings; D, the ledge or toe-stop; E E, Fig. 2, the slot in which the toe-stop is adjustable; F, screw for fastening the toe-stop in any desirable position.
- Figure l is a side view of the trcadle in section.
- Fig. 2 is a plan of the treadle.
- Fig. 3 is an elevation of the toe-stop and a portion of the foot-board.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Description
W. H. STEWART.
SEWING-MACHINE TREADLE.
No.175,386. Patented March 28,1876.
N-FETERS. PHOTO-Lfi'HOGRAFHER. WASHINGTON. D C.
UNITED STATES PATENT OFFIo.
WILLIAM H. STEWART, OF BROOKLYN, NEW YORK.
IMPROVEMENT IN SEWING-MACHINE TREADLES.
Specification forming part of Letters Patent No. 175,386, dated March 28, 1876 application filed I September 15, 1875.
To all whom it may concern Be it known that I, WILLIAM H. STEWART, of Brooklyn, in the county of Kings and State of New York, have invented a new and useful Improvement in Sewing-Machine Treadles, of which the following is a specification:
The objectof my invention is to prevent motion at either the knee or hip joints in running the sewing-machine; and this is accomplished by making the axis of the treadle and the ankle-joints to coincide, and the foot and treadle move in the arc of a circle of which the ankle-joint is the center, thereby saving that unnecessary exertion and waste of power occasioned by the motion of the legs whenever the ankles are in any other position. To effect this object perfectly it is necessary to place the foot on the foot-board of the treadle, so that the ankle-joints may be directly in line with the axis or center of motion of the treadle, and to secure the foot and ankle-joint in this position. I secure this position of the ankle joint by placing a ledge or stop directly 'in front of the foot on the foot-board. A fixed ledge or stop does not effect the object, owing to the varying lengths of feet. It might be right for one persons feet, but entirely Wrong for another. Hence I make the ledge or toestop movable on the foot-board, capable of being set quickly at any point desired, and Se cured in that position by a screw or equivalent de-vice.
In the accompanying drawing, A represents the frames of the sewing-machine, which are of the usual character; B, the foot-board of the tr'eadle; G, thejournals or pivots on which the treadle swings; D, the ledge or toe-stop; E E, Fig. 2, the slot in which the toe-stop is adjustable; F, screw for fastening the toe-stop in any desirable position.
Figure l is a side view of the trcadle in section. Fig. 2 is a plan of the treadle. Fig. 3 is an elevation of the toe-stop and a portion of the foot-board.
I claim as my invention The toe-stop or ledge, adjustable horizontally or otherwise upon the foot-board, in combination with a treadle, substantially as and for the purposes set forth.
WILLIAM H. STEWART.
Witnesses ALFRED ROBINSON, Aver. HAYWARD.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US175386A true US175386A (en) | 1876-03-28 |
Family
ID=2244793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US175386D Expired - Lifetime US175386A (en) | Improvement in sewing-machine treadles |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US175386A (en) |
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0
- US US175386D patent/US175386A/en not_active Expired - Lifetime
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