US252807A - Curtain-cord tightener - Google Patents

Curtain-cord tightener Download PDF

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Publication number
US252807A
US252807A US252807DA US252807A US 252807 A US252807 A US 252807A US 252807D A US252807D A US 252807DA US 252807 A US252807 A US 252807A
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Prior art keywords
curtain
cord
pulley
roller
button
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Expired - Lifetime
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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47H—FURNISHINGS FOR WINDOWS OR DOORS
    • A47H3/00—Fastening, clamping, or guiding devices for the bands or cords of curtains or the like
    • A47H3/02—Fastening, clamping, or guiding devices for bands or cords
    • A47H3/08—Cord-tensioning devices for curtains with two cords
    • 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
    • F16H7/00—Gearings for conveying rotary motion by endless flexible members
    • F16H7/08—Means for varying tension of belts, ropes, or chains
    • 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
    • F16H7/00—Gearings for conveying rotary motion by endless flexible members
    • F16H7/08—Means for varying tension of belts, ropes, or chains
    • F16H2007/0889—Path of movement of the finally actuated member
    • F16H2007/0891—Linear path

Definitions

  • the object of my invention is to overcome these objections; and to this end it consistsin arranging on the locking-slide a pulley whose axis is substantially at a right angle to that of the thumb-button, so that it is brought parallel to the curtain-roller.
  • Figure 1 represents a front view including the curtain-roller.
  • Fig. 2 is a side view of the ti tener.
  • Theletter A designates the locking-slide; B, its thumb-button; O, the pulley, and D the slotted guide-bracket.
  • the locking-slide Amove s in and engages the slot of the bracket D in a well-known manner, and the thumb -button B projects outwardly therefrom, while the pulley G is on the side thereof, so that the axes of the button and the pulley are at right angles to each other.

Description

@AWM
(No Model.) I Y O. SOHWAIBOLD.
CURTAIN 001w TIGHTENER. No} 252,807. Patented Jan. 24,1882.
Fig.1.
Mamba :Mwode 0W b5 M/) Ma wWge W'Wwmews Z/ZWJZZA N. PETERS, PMb-Lithographcr, Washinglm o. c.
UNITED STATES PATENT @EEEQE.
CHARLES SGHWAIBOLD, OF BROOKLYN, NEW YORK.
CURTAIN-CORD TIGHTENER.
SPECIFICATION formingpart of Letters Patent No. 252,807, dated January 24, 1882.
Application filed July 23, 1881.
which receives the endless cui tain-cord. When this old device is applied to use the axis of the thumb button is broughtinto a difl'erentplane from that of the curtain-roller, and hence it is necessary to twist the cord in placing it on the button, which is objectionable, because the cord is thus rendered liable to slip off of its pulley on the curtain-roller, and also because the cord is thereby retarded in its motion.
The object of my invention is to overcome these objections; and to this end it consistsin arranging on the locking-slide a pulley whose axis is substantially at a right angle to that of the thumb-button, so that it is brought parallel to the curtain-roller.
This invention is illustrated in the accompanying drawings, in which Figure 1 represents a front view including the curtain-roller. Fig. 2 is a side view of the ti tener.
Similar letters indicate corresponding parts.
Theletter A designates the locking-slide; B, its thumb-button; O, the pulley, and D the slotted guide-bracket.
(No model.)
The locking-slide Amoves in and engages the slot of the bracket D in a well-known manner, and the thumb -button B projects outwardly therefrom, while the pulley G is on the side thereof, so that the axes of the button and the pulley are at right angles to each other.
When the tightencr is put up the pulley 0 should be brought in a vertical plane with the pulley O of the curtain-roller, and if the curtain-cord e is passed from the curtain-roller around the pulley G, the cord is left straight or untwisted, and can be moved in either direction without danger of its slipping off from the roller or being retarded in its motion.
I am aware that it is old to construct a cordtightener with a pulley having its axis parallel to that of the shade-roller, and I make no claim to such feature, broadly.
What I claim as new,and desire to secure by Letters Patent, is-
The combination, substantially as hereiubefore set forth, of the locking-slide, constructed with the thumb-button and the pulley, having their axes substantially at right angles to each other, and the slotted guide bracket, for the purpose specified.
In testimony whereof I have hereunto set my hand and seal in the presence of two subscribing witnesses.
GHARLES SUHWAIB OLD.
US252807D Curtain-cord tightener Expired - Lifetime US252807A (en)

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