US636645A - Housing for ratchet-wheels. - Google Patents

Housing for ratchet-wheels. Download PDF

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Publication number
US636645A
US636645A US65799997A US1897657999A US636645A US 636645 A US636645 A US 636645A US 65799997 A US65799997 A US 65799997A US 1897657999 A US1897657999 A US 1897657999A US 636645 A US636645 A US 636645A
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United States
Prior art keywords
housing
ratchet
wheels
side walls
wheel
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Expired - Lifetime
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US65799997A
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Richard H Dougherty
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Individual
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Individual
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Priority to US65799997A priority Critical patent/US636645A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D3/00—Portable or mobile lifting or hauling appliances
    • B66D3/04—Pulley blocks or like devices in which force is applied to a rope, cable, or chain which passes over one or more pulleys, e.g. to obtain mechanical advantage
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D41/00—Freewheels or freewheel clutches
    • F16D41/12—Freewheels or freewheel clutches with hinged pawl co-operating with teeth, cogs, or the like
    • 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
    • Y10T74/21—Elements
    • Y10T74/2133—Pawls and ratchets
    • Y10T74/2136—Pivoted pawls
    • Y10T74/2137—Single tooth

Definitions

  • ATTORNEY m NpRRIS PEI'EflS co. mmoumoq WASHINGTON, n c,
  • This invention relates to an improved housing for ratchet-wheels of windlasses such as are used for oyster-dredges; and it consists of the parts hereinafter described and claimed.
  • Figure 1 is an end elevation of a Windlass.
  • Fig. 2 is a vertical section of the improved housing inclosing the ratchet-wheel and pawls.
  • Fig. 3 is a perspective view of the improved housing.
  • the letterA designates the frame, and B the shaft on which the winding drum or spool C is fixed.
  • a ratchet-wheel D is on the shaft, and two pawls e f engage the ratchet and prevent reverse movement.
  • One or both ends of the shaft has a square end 9 to receive a crank-arm H, (indicated by broken lines.)
  • This housing consists of two parallel arch-shaped side walls j, having rounded ends It. These walls are spaced apart and are connected together at the rounded ends by curved end walls Z, which unite said two sidewalls.
  • end wallsl extend upward for a distance and have an upper edge j, and the lower portion of each of the two end walls curves inward, as at j toward each other.
  • An open top 'm is thus left between the upper edges j of the two end walls and the arched part of said side walls j.
  • Each end of the housing has a hole at to receive a bolt 47/, which serves to secure the housing to the frame A, and each bolt also serves as a pivot for one of the pawls.
  • the side walls project higher than the ratchetwheel, and the uppermost edge j of each end wall prevents the pawl adjacent it from turning backward and entirely disengaging from the ratchet-wheel, and the lower curved part j takes under the pivoted end of the pawl and prevents anything from passing upward and thereby disengaging the pawl.
  • a housing for ratchet-Wheels having in combination two parallel arched side walls spaced apart and connected at their ends by end walls thelower ends of which latter curve and take under the ends of the side walls and the upper parts of which extend upward, each having an upper edge, 7", leaving a top opening between said upper edges and said side walls, as set forth.
  • a Windlass In a Windlass the combination of a ratchet wheel; a housing inclosing said ratchet-wheel and having two parallel arched side walls connected together at the ends by end walls, an open top being left between the end walls and said side walls; a pawl within the housing at each side of the ratchet-wheel; and two bolts-one securing each end of the housing and also serving as a'pivot for one of the pawls, substantially as described.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Buckles (AREA)

Description

No. 636,645. Pat ented Nov. 7, I899. R. H. nouauzmv.
HOUSING FOR RATGHET WHEELS.
(Application filed Nov. 10, I897.)
WITNEEEES INA/ENTER 756% 2 W rM/v a. GM. y 6
ATTORNEY m: NpRRIS PEI'EflS co. mmoumoq WASHINGTON, n c,
NITED STATES ATENT FFICE.
HOUSING FOR RATCHET-WHEELS.
SPECIFICATION forming part of Letters Patent No. 636,645, dated November 7, 1899.
Application filed November 10, 1897. Serial No- 657,999. (No model.)
To aZZ whont it may concern.-
Be it known that I, RICHARD H. DOUGH- ERTY, a citizen of the United States, residing at Baltimore, in the State of Maryland, have invented certain new and useful Improvements in Housings for Ratchet-Wheels, of which the following is a specification.
This invention relates to an improved housing for ratchet-wheels of windlasses such as are used for oyster-dredges; and it consists of the parts hereinafter described and claimed.
In the accompanying drawings, Figure 1 is an end elevation of a Windlass. Fig. 2 is a vertical section of the improved housing inclosing the ratchet-wheel and pawls. Fig. 3 is a perspective view of the improved housing.
The letterA designates the frame, and B the shaft on which the winding drum or spool C is fixed. A ratchet-wheel D is on the shaft, and two pawls e f engage the ratchet and prevent reverse movement. One or both ends of the shaft, has a square end 9 to receive a crank-arm H, (indicated by broken lines.)
It is desirable to provide a housing for inclosing the ratchet-wheel and the pawls and of such construction that access may be immediately had to said parts at any time, and which will exclude the clothing of the operator from accidentally catching in said parts and prevent the pawls from turning backward and wholly disengaging from the ratchet and throwing the crank back, which sometimes results in serious injury to the operator. I have accordingly provided the housing I shown in the drawings. This housing consists of two parallel arch-shaped side walls j, having rounded ends It. These walls are spaced apart and are connected together at the rounded ends by curved end walls Z, which unite said two sidewalls. These end wallsl extend upward for a distance and have an upper edge j, and the lower portion of each of the two end walls curves inward, as at j toward each other. An open top 'm is thus left between the upper edges j of the two end walls and the arched part of said side walls j. Each end of the housing has a hole at to receive a bolt 47/, which serves to secure the housing to the frame A, and each bolt also serves as a pivot for one of the pawls. The side walls project higher than the ratchetwheel, and the uppermost edge j of each end wall prevents the pawl adjacent it from turning backward and entirely disengaging from the ratchet-wheel, and the lower curved part j takes under the pivoted end of the pawl and prevents anything from passing upward and thereby disengaging the pawl.
By using this housing device there will be no liability of the crank being thrown backward and injuring the operator.
Having thus described myinvention, what I claim is- 1. A housing for ratchet-Wheels having in combination two parallel arched side walls spaced apart and connected at their ends by end walls thelower ends of which latter curve and take under the ends of the side walls and the upper parts of which extend upward, each having an upper edge, 7", leaving a top opening between said upper edges and said side walls, as set forth.
2. In a Windlass the combination of a ratchet wheel; a housing inclosing said ratchet-wheel and having two parallel arched side walls connected together at the ends by end walls, an open top being left between the end walls and said side walls; a pawl within the housing at each side of the ratchet-wheel; and two bolts-one securing each end of the housing and also serving as a'pivot for one of the pawls, substantially as described.
In testimony whereof I affix my signature in the presence of two witnesses.
RICHARD H. DOUGHERTY.
Witnesses:
OHAPIN A. FERGUSON, CHAS. B. MANN.
US65799997A 1897-11-10 1897-11-10 Housing for ratchet-wheels. Expired - Lifetime US636645A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US65799997A US636645A (en) 1897-11-10 1897-11-10 Housing for ratchet-wheels.

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Application Number Priority Date Filing Date Title
US65799997A US636645A (en) 1897-11-10 1897-11-10 Housing for ratchet-wheels.

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US636645A true US636645A (en) 1899-11-07

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US65799997A Expired - Lifetime US636645A (en) 1897-11-10 1897-11-10 Housing for ratchet-wheels.

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030221801A1 (en) * 2002-03-19 2003-12-04 Canimex Inc. Safety braking device for garage doors and the like
US20060185800A1 (en) * 2002-03-19 2006-08-24 Canimex Inc. Brake device for garage doors and the like, and door assembly including the same
US20070204515A1 (en) * 2006-02-06 2007-09-06 Canimex Inc. Brake device for garage doors and the like, kit for assembling the same, and door assembly provided with the brake device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030221801A1 (en) * 2002-03-19 2003-12-04 Canimex Inc. Safety braking device for garage doors and the like
US6986378B2 (en) 2002-03-19 2006-01-17 Canimex Inc. Braking device for garage doors and the like
US20060185800A1 (en) * 2002-03-19 2006-08-24 Canimex Inc. Brake device for garage doors and the like, and door assembly including the same
US7543625B2 (en) 2002-03-19 2009-06-09 Canimex Inc. Brake device for garage doors and the like, and door assembly including the same
US20070204515A1 (en) * 2006-02-06 2007-09-06 Canimex Inc. Brake device for garage doors and the like, kit for assembling the same, and door assembly provided with the brake device

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