US185970A - Improvement in lever pawl and ratchet for operating wagon-brakes - Google Patents

Improvement in lever pawl and ratchet for operating wagon-brakes Download PDF

Info

Publication number
US185970A
US185970A US185970DA US185970A US 185970 A US185970 A US 185970A US 185970D A US185970D A US 185970DA US 185970 A US185970 A US 185970A
Authority
US
United States
Prior art keywords
ratchet
improvement
lever
brakes
pawl
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
Application number
Publication date
Application granted granted Critical
Publication of US185970A publication Critical patent/US185970A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G5/00—Means for preventing, limiting or returning the movements of parts of a control mechanism, e.g. locking controlling member
    • G05G5/12—Means for preventing, limiting or returning the movements of parts of a control mechanism, e.g. locking controlling member for holding members in an indefinite number of positions, e.g. by a toothed quadrant
    • G05G5/14—Means for preventing, limiting or returning the movements of parts of a control mechanism, e.g. locking controlling member for holding members in an indefinite number of positions, e.g. by a toothed quadrant by locking a member with respect to a fixed quadrant, rod, or the like
    • G05G5/18—Means for preventing, limiting or returning the movements of parts of a control mechanism, e.g. locking controlling member for holding members in an indefinite number of positions, e.g. by a toothed quadrant by locking a member with respect to a fixed quadrant, rod, or the like by positive interengagement, e.g. by a pawl
    • 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
    • Y10T74/20636—Detents
    • Y10T74/20672—Lever engaging rack
    • Y10T74/2069—Handle release

Definitions

  • Figure l is a side view of my improved device, part being broken away to show the construction.
  • Fig. 2 is a front view of the same.
  • the invention relates to an improvement in that class of devices for operating wagonbrakes in which a two-part jointed lever is employed.
  • the invention relates to the construction and arrangement of parts, as hereinafter described and claimed.
  • A indicates a curved ratchet-bar attached to the side of a wagon-body, B, and D O the two parts of the brake-lever, which are pivoted together at a point above the ratchet-bar.
  • the upper end of part O of said lever is forked as shown, Fig. 2, the respective arms of the fork being parallel and of such length that they project above the ratchet-bar sufficiently to permit the pivoted attachment of the brake-strap G, the T-shaped pawl E, and the handle part D, of the lever.
  • the lower end of part D has a shoulder and finger, b.
  • a cross-pin, a engages the shoulder when pressure is applied to part D to throw the brake-lever forward; but when pressure is applied in the opposite direction the finger b engages the arm at of pawl E, overcomes the stress of spring E, and throws the latter out of engagement with the teeth of the ratchet-bar.
  • Such backward movement is, however, arrested by contact of the finger b with the pivot of strap G.
  • the vibratory movement of part D is therefore limited by dle portion of the lever will act upon the pawl to release it from engagement with the teeth of.a ratchet bar; but

Description

J. R. ROBINSON.
LEVER, PAWL, AND RATCHET FOR OPERATING WAGON-BRAKES, &
Patented Jan. 2, '1877.
ATTORNEYS.
WITNESSES N. PETERS. PHOTO-UTHOGRAPHER, WASHINGTON D C.
UNITED STATES PATENT OFFICE.
JAMES R. ROBINSON, OF SHAWNEE MOUND, MISSOURI.
IMPROVEMENT IN LEVER PAWL AND RATCHET FOR OPERATING WAGON-BRAKES. &c.
Specification forming part of Letters Patent No. 185,970, dated January 2, 1877; application filed August 21, 1876.
To all whom it may concern Be it known that 1, JAMES RANDOLPH ROB- INSON, ofShawnee Mound,in the county of Henry and State of Missouri, have invented a new and useful Improvement in .Lever and (latch, of which the following is a specification:
Figure l is a side view of my improved device, part being broken away to show the construction. Fig. 2 is a front view of the same.
Similar letters of reference indicate corresponding parts.
The invention relates to an improvement in that class of devices for operating wagonbrakes in which a two-part jointed lever is employed. The invention relates to the construction and arrangement of parts, as hereinafter described and claimed.
In the drawing, A indicates a curved ratchet-bar attached to the side of a wagon-body, B, and D O the two parts of the brake-lever, which are pivoted together at a point above the ratchet-bar. The upper end of part O of said lever is forked as shown, Fig. 2, the respective arms of the fork being parallel and of such length that they project above the ratchet-bar sufficiently to permit the pivoted attachment of the brake-strap G, the T-shaped pawl E, and the handle part D, of the lever. The lower end of part D has a shoulder and finger, b. A cross-pin, a, engages the shoulder when pressure is applied to part D to throw the brake-lever forward; but when pressure is applied in the opposite direction the finger b engages the arm at of pawl E, overcomes the stress of spring E, and throws the latter out of engagement with the teeth of the ratchet-bar. Such backward movement is, however, arrested by contact of the finger b with the pivot of strap G. The vibratory movement of part D is therefore limited by dle portion of the lever will act upon the pawl to release it from engagement with the teeth of.a ratchet bar; but
What I claim 1s-- The combination, with the ratchet-bar, of the lever composed of the forked portion 0, the handle portion I), pivoted thereto, and constructed with a shoulder and finger, as described, the T-shaped spring-pawl E, and the brake-strap Gr, pivoted at e, as shown and de scribed, to operate as specified.
JAMES RANDOLPH ROBINSON.
Witnesses:
H. J. RUTHRAUFF, J. H. HALE.
US185970D Improvement in lever pawl and ratchet for operating wagon-brakes Expired - Lifetime US185970A (en)

Publications (1)

Publication Number Publication Date
US185970A true US185970A (en) 1877-01-02

Family

ID=2255377

Family Applications (1)

Application Number Title Priority Date Filing Date
US185970D Expired - Lifetime US185970A (en) Improvement in lever pawl and ratchet for operating wagon-brakes

Country Status (1)

Country Link
US (1) US185970A (en)

Similar Documents

Publication Publication Date Title
US185970A (en) Improvement in lever pawl and ratchet for operating wagon-brakes
US507973A (en) Israel w
US316810A (en) Abnee niebel
US1236616A (en) Operating mechanism for wire-stretchers.
US465764A (en) Safety-catch for hammerless guns
US147817A (en) Xmprovement in windlasses for presses
US380995A (en) Henry f
US248883A (en) Thomas c
US175964A (en) Improvement in throttle-valve levers
USRE8006E (en) Improvement in wagon-brake levers
US569342A (en) Joseph h
US503176A (en) Gaff-hook
US670822A (en) Fork for handling sheaves.
US1125325A (en) Pawl-and-ratchet mechanism.
US250543A (en) Wagon-brake
US371393A (en) Territory
US191366A (en) Improvement in wagon-brake levers
US149129A (en) Improvement in shipper-levers
US424170A (en) Actuating device for car-brakes
US101308A (en) Michael powell
US226508A (en) Brake-lever
US403582A (en) Device for starting cars
US740863A (en) Ratchet-lever.
US450972A (en) Pipe-wrench
US184095A (en) Improvement in wagon-brake levers