US152131A - Improvement in treadles - Google Patents
Improvement in treadles Download PDFInfo
- Publication number
- US152131A US152131A US152131DA US152131A US 152131 A US152131 A US 152131A US 152131D A US152131D A US 152131DA US 152131 A US152131 A US 152131A
- Authority
- US
- United States
- Prior art keywords
- treadles
- improvement
- pivoted
- lever
- chester
- 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
- 210000003371 toe Anatomy 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
Images
Classifications
-
- 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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- 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
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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
- Figure l is a front elevation of my improved' treadle; and Fig. 2 is a section on the line w a?, Fig. l.
- a and B represent the two treadles arranged side by side, and mounted on the shaft O, so as to turn loosely on it.
- D is a rock-lever of peculiar shape, pivoted at its middle on a pivot, E, in the center-piece J, which separates the two treadles, the rock-lever hobos parallel. with ends to allow the inner portion to fall when the treadles go down far enough to allow the treadles to fall to the extent which is required without striking the arms.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Sewing Machines And Sewing (AREA)
Description
UNITED STATES PATENT CEEICE.
JOSEPH LEE, OF VEST CHESTER, PENNSYLVANIA.
IMPROVEMENT IN TREADLES.
Specification forming part of Letters Patent No. 152,131. dated June 16, 1874; application tiled Api-i1 18,1874.
To all whom it may concern:
Be it known that I, JOSEPH LEE, of West Chester, Chester county, Pennsylvania, have invented a new and Improved Sewing-Machine lTreadle, of which the following is a specification:
The invention will rst be fully described, and then pointed out in the claim.
Figure l is a front elevation of my improved' treadle; and Fig. 2 is a section on the line w a?, Fig. l.
Similar letters of reference indicate corresponding parts.
A and B represent the two treadles arranged side by side, and mounted on the shaft O, so as to turn loosely on it. D is a rock-lever of peculiar shape, pivoted at its middle on a pivot, E, in the center-piece J, which separates the two treadles, the rock-lever heilig parallel. with ends to allow the inner portion to fall when the treadles go down far enough to allow the treadles to fall to the extent which is required without striking the arms.
By this sim ple arrangement the walkin ganotion treadle is rendered practical in a cheaper construction than any heretofore made.
I am aware that a eentrally-pivoted rocklever has been operated alternately by two treadles, pivoted at the heel or resting upon a sprin at that point; but mine are pivoted at the center, and the lever at its ends in the tlanges a b of treadles. In those cases the toes alternately operate the crank-rod, .while in mine the heel or toe may either be employed; moreover, they use reacting spriu gs, wi th which I am enabled to dispense altogether.
Having thus described my invention, what I claim is- The combination of the treadles A B, having flanges al b, and centrally pivoted on the same shaft O with centrally-t'ulerumed lever D, whose ends slide in sockets of the flanges a b, as and for the purpose described.
JOSEPH LEE.
Witnesses: i
S. ALrHoNso KIRK, WM. K. TEORP.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US152131A true US152131A (en) | 1874-06-16 |
Family
ID=2221543
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US152131D Expired - Lifetime US152131A (en) | Improvement in treadles |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US152131A (en) |
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0
- US US152131D patent/US152131A/en not_active Expired - Lifetime
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