US138897A - Improvement in sewing-machine brakes - Google Patents

Improvement in sewing-machine brakes Download PDF

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US138897A
US138897A US138897DA US138897A US 138897 A US138897 A US 138897A US 138897D A US138897D A US 138897DA US 138897 A US138897 A US 138897A
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Prior art keywords
sewing
wheel
wedge
hanger
improvement
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Expired - Lifetime
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    • 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
    • F16D41/06—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface
    • F16D41/069—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface the intermediate members wedging by pivoting or rocking, e.g. sprags
    • F16D41/07—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface the intermediate members wedging by pivoting or rocking, e.g. sprags between two cylindrical surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
    • 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
    • Y10T74/15—Intermittent grip type mechanical movement
    • Y10T74/1558—Grip units and features
    • Y10T74/1584—Gripper mountings, slide

Definitions

  • This brake consists of a stationary hanger, a wedge fitted thereto made of India rubber or other elastic material, or faced with the same, and a pin fitting a slot in the hanger and retaining the wedge therein, the whole being applied to a sewing-machine in such position relatively to its fly-wheel that when the latter rotates in the wrong direction the wedge is wedged between it and the hanger and stops the wheel; but when the wheel is turning in the proper direction the wedge in nowise interferes with it.
  • Figure 1 is a side view of a portion of the fly-wheel of a sewing-machine, showing my improvement applied
  • Fig. 2 is a sectional View of the brake taken transversely through the wedge.
  • A represents the fly-wheel of a sewing-machine, and B the shaft thereof, and G the table of the machine.
  • D is the hanger before mentioned. It is furnished on the upper end with a flange which is secured by screws to the under side of the table 0, and likewise is provided at the lower end with a bifurcated boss or socket which receives the wedge E.
  • This hanger is arranged over the periphery of the fiy-wlieel A, a little back of its center, and the recess in its socket inclines downward in a forward direction.
  • the wedge E is made of India rubber or other elastic material, or 1nelastic material faced with India rubber or the like.
  • This brake is very simple in its construction, and is not liable to get out of order; moreover, it is very effective for the purpose for witnesseses HENRY T. BROWN, MICHAEL RYAN.

Description

UNITED STATES PATENT OFFIoE.
CHARLES E. KIMBALL, OF NEW YORK, N. Y.
IMPROVEMENT IN SEWING-MACHINE BRAKES.
Specification forming part of Letters Patent No. 138,897, dated May 13, 1873 application filed March 10, 1873.
To all whom it may concern:
Be it known that I, CHARLES E. KIMBALL, of the city, county, and State of New York,
d have invented an Improved Sewing-Machine Brake, of which the following is a specification:
This brake consists of a stationary hanger, a wedge fitted thereto made of India rubber or other elastic material, or faced with the same, and a pin fitting a slot in the hanger and retaining the wedge therein, the whole being applied to a sewing-machine in such position relatively to its fly-wheel that when the latter rotates in the wrong direction the wedge is wedged between it and the hanger and stops the wheel; but when the wheel is turning in the proper direction the wedge in nowise interferes with it.
In the accompanying drawing, Figure 1 is a side view of a portion of the fly-wheel of a sewing-machine, showing my improvement applied, and Fig. 2 is a sectional View of the brake taken transversely through the wedge.
Similar letters of reference indicate corresponding parts in both figures.
A represents the fly-wheel of a sewing-machine, and B the shaft thereof, and G the table of the machine. D is the hanger before mentioned. It is furnished on the upper end with a flange which is secured by screws to the under side of the table 0, and likewise is provided at the lower end with a bifurcated boss or socket which receives the wedge E. This hanger is arranged over the periphery of the fiy-wlieel A, a little back of its center, and the recess in its socket inclines downward in a forward direction. The wedge E is made of India rubber or other elastic material, or 1nelastic material faced with India rubber or the like. It tapers toward the front of the ma chine, and the degree of its taper corresponds approximately to the inclined top of the recess in the hanger and the adjacent portion of the wheel. The wedge is retained within the .hanger by means of a pin, a, which projects into slots I) b in the sides of the hanger socket, said slots being inclined to correspond with the inclination of the top of the socket.
Should the wheel be rotated in the wrong direction, the wedge E is dragged forward by contact with the periphery of the wheel, and is wedged between the wheel and the hanger, and thereby the wheel is stopped. When running in the proper direction the wheel is wholly unaffected by the wedge, as the latter of course remains back in the hanger, as shown I in Fig. l of the drawing.
This brake is very simple in its construction, and is not liable to get out of order; moreover, it is very effective for the purpose for Witnesses HENRY T. BROWN, MICHAEL RYAN.
US138897D Improvement in sewing-machine brakes Expired - Lifetime US138897A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2612970A (en) * 1950-05-09 1952-10-07 Discount Bernard Brake assembly for rotary card files
US2707112A (en) * 1950-09-27 1955-04-26 Mabel T Ludwigson Pedal operated scooter
US5419504A (en) * 1992-05-01 1995-05-30 Daiwa Seiko, Inc. Reverse rotation preventive device for fishing reel

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2612970A (en) * 1950-05-09 1952-10-07 Discount Bernard Brake assembly for rotary card files
US2707112A (en) * 1950-09-27 1955-04-26 Mabel T Ludwigson Pedal operated scooter
US5419504A (en) * 1992-05-01 1995-05-30 Daiwa Seiko, Inc. Reverse rotation preventive device for fishing reel

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