US233802A - Curtain-cord tightener - Google Patents

Curtain-cord tightener Download PDF

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US233802A
US233802A US233802DA US233802A US 233802 A US233802 A US 233802A US 233802D A US233802D A US 233802DA US 233802 A US233802 A US 233802A
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Prior art keywords
curtain
spring
cord
frame
base
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Expired - Lifetime
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H7/00Gearings for conveying rotary motion by endless flexible members
    • F16H7/08Means for varying tension of belts, ropes, or chains
    • F16H2007/0863Finally actuated members, e.g. constructional details thereof
    • F16H2007/0872Sliding members

Description

(No Model.)

T. O. RICHARDS.

Curtain 00rd Tigh'tener.

No. 233,802. Patented Oct. 26, 1880.

@Til'nesses N-PEYERS. PMOYO-LITHOGHAFHER, WASPHNGTON, D. C.

UNITE STATES PATENT @FFICEQ THOMAS C. RICHARDS, OF WINSTED, CONNECTICUT.

CURTAIN-CORD TIGHTENER.

SPECIFICATION forming part of Letters Patent No. 233,802, dated October 26, 1880.

Application filed March 26, 1880. (No model.)

To all whom it may concern:

Be it known that I, THOMAS C. RICHARDS, of Winsted, in the county of Litchfield and State of Connecticut, have invented a certain new and useful Improvement in Curtain-Cord Fasteners, of which the following is a specification, reference being had to the accompanying drawings, where- Figure 1 is a front view of a curtain-cord fastener embodying my improvement. Fig. 2 is a rear view of same. Fig. 3 is a View of same in central longitudinal section on plane denoted by dotted line 00 m, Fig. 1.

The letter a denotes the frame of the fastener, bearing the ratches b b. On the faces of .these ratches rides the base of the cordknob 0, the base being provided with the catch 61, to take into the ratches. The frame a bears the slot 6 between the ratches, and the base of the cord-knob bears the hooks f and 9, projecting through this slot to the rear of the frame. The hook f bears the spring-base f.

The springi is of peculiar shape. It is made of sheet metal. It has at the base the curve *5, which, fitting under the hook f, itsextreme rear end meanwhile resting on the basef, and its front end on the back side of the frame a, holds the spring in place without the necessity of riveting or cutting a hole in the spring. The front end of the spring bears the curve 1', which causes the spring to ride easily over the small projections left on the back of the frame in casting it, casting being the common method of making such frames. The hook g (by striking upon the spring) prevents the knob from being unduly raised off the frame in adjusting the knob along the ratches.

I refer herein to the part t" as a curve. One function thereof is to retain the spring in place by its co-operation with the hook f, and any shape given to the spring at this point, whereby it has its support in a base, f, and upon a hook,f, is an equivalent shape.

I claim as my invention- The frame a, bearing the ratches b and slot 0, the cord-knob bearing the catch (1 and the hooks f g and the spring-base f, and the spring t', bearing at one end on the back of the frame, and hearing at the other end the curve 1', fitting between hookfand. basef, all combined for use substantially as shown and described.

THOS. C. RICHARDS.

Witnesses:

WM. E. SIMoNDs, RoB'r. F. GAYLORD.

US233802A Curtain-cord tightener Expired - Lifetime US233802A (en)

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US233802A true US233802A (en) 1880-10-26

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011020078A1 (en) 2009-08-13 2011-02-17 Acufocus, Inc. Masked intraocular implants and lenses

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011020078A1 (en) 2009-08-13 2011-02-17 Acufocus, Inc. Masked intraocular implants and lenses

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