US122502A - Improvement in mechanical movements - Google Patents

Improvement in mechanical movements Download PDF

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Publication number
US122502A
US122502A US122502DA US122502A US 122502 A US122502 A US 122502A US 122502D A US122502D A US 122502DA US 122502 A US122502 A US 122502A
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United States
Prior art keywords
crank
improvement
mechanical movements
pin
wheel
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Expired - Lifetime
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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
    • F16H21/22—Crank gearings; Eccentric gearings with one connecting-rod and one guided slide to each crank or eccentric
    • F16H21/32—Crank gearings; Eccentric gearings with one connecting-rod and one guided slide to each crank or eccentric with additional members comprising only pivoted links or arms
    • 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
    • Y10T74/18—Mechanical movements
    • Y10T74/18056—Rotary to or from reciprocating or oscillating
    • Y10T74/18176—Crank, pitman, lever, and slide
    • 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
    • Y10T74/18208—Crank, pitman, and slide

Definitions

  • the object of the invention is to avoid deadcenters in the crank movement by which a reciprocating motion is secured from motive powers.
  • Figure l is a plan, and Fig. 2 a section, showing the radial planes, in which are, respectively, the crank-pin and the crank-arm.
  • A is the balance-wheel, provided with crankpin a and shaft a having crank-arm (0 B is the crank-pitman, and C the slide or gate which it reciprocates. D is the frame which supports the mechanism.
  • the axis of the crank-wheel is arranged in a horizontal plane, nearly or quite as much above the plane in which the slide moves as is the distance between the said axis and the crank-pin a.
  • the balance-wheel having its axial shaft to arranged nearly or as far above the plane of movement of the reciprocated slide C as the distance between said axial shaft a and the crank-pin to as and for the purpose set forth.
  • the balance-wheel A provided with crankarm a, arranged in advance of its crank-pin a as and for the purpose described.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
  • Transmission Devices (AREA)

Description

67, ALEXANDER WALLACE.
Improvement in Mechanical Movements.
Pat.en*ed.lan.2.1872.
gunman Wtmm ALEXANDER WALLACE, OF JACKSONVILLE, ASSIGNOR OF ONE-HALF HIS RIGHT TO LEONARD R. TURNER, OF FERNANDINA, FLORIDA.
IMPROVEMENT IN MECHANICAL MOVEMENTS.
Specification forming part of Letters Patent No. 122,502, dated January 2, 1872.
Specification describing certain Improvements in Mechanical Movement invented by ALEXANDER WALLAoE, of Jacksonville, in
the county of Duval and State of Florida.
The object of the invention is to avoid deadcenters in the crank movement by which a reciprocating motion is secured from motive powers.
Figure l is a plan, and Fig. 2 a section, showing the radial planes, in which are, respectively, the crank-pin and the crank-arm.
A is the balance-wheel, provided with crankpin a and shaft a having crank-arm (0 B is the crank-pitman, and C the slide or gate which it reciprocates. D is the frame which supports the mechanism. The axis of the crank-wheel is arranged in a horizontal plane, nearly or quite as much above the plane in which the slide moves as is the distance between the said axis and the crank-pin a. By this construction I cause the pitman to move nearly in a straight, and on the shortest possible line, when moving forward against the resistance of the work to be done, while it travels on a large curve or are When returning and meeting with no resistance. be passed through the shaft a and arm (6 and another through crank-pin a and shaft a it will be perceived that a diedral angle is formed and that the crank-arm a is thus placed in advance of the crank-pin a. i
If one plane By this construction the steam is cut off from the piston after the slide has reached its maximum throw, both on the forward and backward stroke, which causes the steam to take the pitman over its dead-centers on each side, while during the interval between the shutting off of steam on one side of the piston and entering it on the other the balance-wheel has acquired momentum enough to carry the crankarm a over each of its dead-centers.
Having thus described all that is necessary to a full understanding of my invention, What I esteem to be new, and desire to secure by Letters Patent, is
1. The balance-wheel having its axial shaft to arranged nearly or as far above the plane of movement of the reciprocated slide C as the distance between said axial shaft a and the crank-pin to as and for the purpose set forth.
2. The balance-wheel A provided with crankarm a, arranged in advance of its crank-pin a as and for the purpose described.
3. The shaft (0, crank-pin a and crank-arm a of a balance-wheel, A, arranged With respect to the pitman B and slide or gate 0, as and for the purpose described.
ALEXANDER WALLACE.
US122502D Improvement in mechanical movements Expired - Lifetime US122502A (en)

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US122502A true US122502A (en) 1872-01-02

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3598045A (en) * 1969-02-07 1971-08-10 Data Products Corp Assembly for latching a hinged printing drum into alignment with a hammer bank
US20070148016A1 (en) * 2005-12-22 2007-06-28 Newport Medical Instruments, Inc. Reciprocating drive apparatus and method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3598045A (en) * 1969-02-07 1971-08-10 Data Products Corp Assembly for latching a hinged printing drum into alignment with a hammer bank
US20070148016A1 (en) * 2005-12-22 2007-06-28 Newport Medical Instruments, Inc. Reciprocating drive apparatus and method
US7654802B2 (en) 2005-12-22 2010-02-02 Newport Medical Instruments, Inc. Reciprocating drive apparatus and method

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