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US206415A - Improvement in wagon-brake levers - Google Patents

Improvement in wagon-brake levers Download PDF

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Publication number
US206415A
US206415A US206415DA US206415A US 206415 A US206415 A US 206415A US 206415D A US206415D A US 206415DA US 206415 A US206415 A US 206415A
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Prior art keywords
lever
wagon
improvement
dog
brake levers
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    • 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
    • G05G5/16—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 friction
    • 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
    • Y10T74/2066—Friction

Definitions

  • the nature of this invention relates to the construction of a clamping device for holding the tension-lever of a wagon-brake, the object being to produce a cheap and efficient device for holding brakes when set under strain without the aid of a ratchet or pawl.
  • A represents a detached section of the side of a wagon-box, showing the method of attaching the device when used in connection with the common wagon-brake.
  • B represents the tension-lever. This lever is pivoted at its lower end to the lower edge of the box A, and extends sufficiently high to be convenient to the driver.
  • 0 represents a bar of iron in the form of an are, bent to a circle whose radius is equal to the distance from the pivot in the lower end of lever B to the point of intersection with the are C. This bar is bent laterally at each end of the are, so as to form an offset to throw the areout slightly from the box, and to form feet, by which it may be fastened to the box.
  • the rear end of the bar is extended and curved inward, so as to receive the pivot that receives the lower end of lever B.
  • the loop D on the side of thelever B embraces the are C, by means of which the lever is guided and supported.
  • tension-lever B and the bar 0 and its manner of attachment are old and not of my invention.
  • E represents an elbow-shaped dog, pivoted loosely near the elbow to lever B.
  • One arm of this lever hangs nearly parallel with the lever B, and is provided near the lower end with the long mortise F, through which the are 0 passes loosely; but when this arm is allowed to swing out of parallel with the lever the ends of the mortise F will impinge against the opposite edges of the are 0, thus rendering the lever B immovable in one direction.
  • the tension-lever B is attached in the usual manner to the brakes of a wagon, the brakes may be set and firmly held by the dog E at any point on the are 0 without the aid of a ratchet or pawl.
  • Gr represents a trip-lever, made in the form of an inverted letter T, having three arms.
  • the rear short arm is pivoted to the lever B.
  • the opposite arm is pivoted to the upper end of the trip-rod H.
  • the lower end of the triprod is pivoted to the horizontal arm of the dog E.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Handcart (AREA)

Description

0. W. BOETTNBR. Wagon-Brake Lever.
No. 206,415. I Patented July 30,1878,
fittest. Inventor.
CHARLES V. BOETTNER, OF PERU, INDIANA IMPROVEMENT IN WAGON-BRAKE LEVERS.
Specification forming part of Letters Patent No. 206,415, dated July 30, 1878; application filed January .21, 1878.
To all whom it may concern:
Be it known that I, CHARLES W. BoETT- NER, of the city of Peru, county of Miami, and State of Indiana, have made a new and useful invention in Tension-Holder for \Vagoil-Brakes and analogous purposes, of which the following is a specification:
The nature of this invention relates to the construction of a clamping device for holding the tension-lever of a wagon-brake, the object being to produce a cheap and efficient device for holding brakes when set under strain without the aid of a ratchet or pawl.
The accompanying drawing forms a part of this specification, and shows aperspeetive view of a device embodying my invention.
The letters marked on the drawing denote the parts indicated by a like letter in this specification.
A represents a detached section of the side of a wagon-box, showing the method of attaching the device when used in connection with the common wagon-brake. B represents the tension-lever. This lever is pivoted at its lower end to the lower edge of the box A, and extends sufficiently high to be convenient to the driver. 0 represents a bar of iron in the form of an are, bent to a circle whose radius is equal to the distance from the pivot in the lower end of lever B to the point of intersection with the are C. This bar is bent laterally at each end of the are, so as to form an offset to throw the areout slightly from the box, and to form feet, by which it may be fastened to the box. The rear end of the bar is extended and curved inward, so as to receive the pivot that receives the lower end of lever B. The loop D on the side of thelever B embraces the are C, by means of which the lever is guided and supported.
The tension-lever B and the bar 0 and its manner of attachment are old and not of my invention.
E represents an elbow-shaped dog, pivoted loosely near the elbow to lever B. One arm of this lever hangs nearly parallel with the lever B, and is provided near the lower end with the long mortise F, through which the are 0 passes loosely; but when this arm is allowed to swing out of parallel with the lever the ends of the mortise F will impinge against the opposite edges of the are 0, thus rendering the lever B immovable in one direction.
Now, it will be seen that it the tension-lever B is attached in the usual manner to the brakes of a wagon, the brakes may be set and firmly held by the dog E at any point on the are 0 without the aid of a ratchet or pawl.
Gr represents a trip-lever, made in the form of an inverted letter T, having three arms. The rear short arm is pivoted to the lever B. The opposite arm is pivoted to the upper end of the trip-rod H. The lower end of the triprod is pivoted to the horizontal arm of the dog E.
1t will be seen that the position of the long arm of the trip-lever Gr to the handle of the tension-lever B enables the operator to grasp both levers with one hand, and by pressing them together the dog E is disengaged, and the lever B may be freely moved back and forth; but on releasing the grasp of the lever G the weight of the horizontal arm of the dog causes the other arm of the dog to swing out of parallel with the lever B, when the ends of the mortise F will impinge on the are C, and hold the lever from moving back To compensate for any irregularity in the curve of the are C the dog E is made with an elongated eye, so as to allow it to rise and fall on the pivot, by which it is fastened to the lever B.
Having thus fully described my invention, what I claim is In combination with the lever B and are C, the trip-lever Gr, dog E, and trip-rod H, when constructed, arranged, andv combined as and for the purposes hereinbefore set forth.
CHARLES XV. BOETTNER.
Vitnesses:
H. F. UNDEnwoon, L. E. WHEELER.
US206415D Improvement in wagon-brake levers Expired - Lifetime US206415A (en)

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