US689662A - Pull-cord. - Google Patents

Pull-cord. Download PDF

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Publication number
US689662A
US689662A US7047401A US1901070474A US689662A US 689662 A US689662 A US 689662A US 7047401 A US7047401 A US 7047401A US 1901070474 A US1901070474 A US 1901070474A US 689662 A US689662 A US 689662A
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US
United States
Prior art keywords
cord
strand
pull
strands
core
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US7047401A
Inventor
William A Tucker
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tucker & Carter Rope Co
Original Assignee
Tucker & Carter Rope Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tucker & Carter Rope Co filed Critical Tucker & Carter Rope Co
Priority to US7047401A priority Critical patent/US689662A/en
Application granted granted Critical
Publication of US689662A publication Critical patent/US689662A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D07B1/02—Ropes built-up from fibrous or filamentary material, e.g. of vegetable origin, of animal origin, regenerated cellulose, plastics
    • 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
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/16—Belt fasteners
    • Y10T24/1608—Hinged

Definitions

  • ATTORNEY HE NdRRlS vzrsn co., PH
  • the invention consists of a pull-cord having a flexible steel core and a flexible exterior surrounding the core made of strands of fibrous material--such as cotton, jute, hemp, &c.-braided, twisted, or woven together.
  • the core has a central strand of fibrous material which is sheathed within a plurality of steel strands.
  • the steel strands are generally twisted together, and each such strand preferably consists of a plurality of fine steel wires twisted together to form a strand.
  • Figure 1 is a side elevation showing the improved pull-cord, the strandsof the exterior being cut off to expose the core and all the strands of the cord being frayed and spread out.
  • Fig. 2 isatransverse section of the cord.
  • 1 is the exterior of the cord, composed of some seventeen separate strands 2 braided together, each strand being composed of a number of threads 3 twisted together to form a strand 2.
  • the core 4. is composed of a plurality of separate steel strands 5 twisted together, each strand,
  • the core 5 being composed of a plurality of separate fine steel wires (5 twisted together to form a strand 5.
  • the core also preferably has, as shown, a central strand 7, sheathed within the core 4 and made of fibrous material.
  • This central strand 7, shown in the drawings, is preferably made of a plurality of separate smaller com ponentstrands 8-twisted together, each such strand 8 being made of a number of threads twisted together.
  • the strands composing the exterior and core may be varied in number, and the central strand 7 may in some cases be omitted.
  • the strands 5 of the core may be braided or woven together instead of being twisted together. The same is true of the strands 8.
  • Pull-cords as heretofore made are subject to a Considerable degree of extensibility or stretch under the strains incident to use, and this is a recognized defect requiring frequent adjustment of the cord to maintain its efflciency.
  • the problem of overcoming this defeet and of maintaining at the same time the requisite flexibility is successfully solved by this invention. At the same time the strength of the cord is greatly increased without increasing its size.
  • a non-stretchable, flexible pull-cord including in its structure a flexible core made of a central strand of fibrous material with a sheathing therefor made of separate steel strands twisted together, each strand of which consists of a plurality of tine wires twisted together; and a flexible exterior made of braided, twisted, or woven strands of fibrous material.
  • a non-stretchable, flexible pull-cord including in its structure a flexible core made Of a central strand of fibrous material with a sheathing therefor made of separate closelyassociated steel strands; and a flexible exterior made of braided, twisted, or woven strandsof fibrous material, said central strand name to this specification in the presence consisting of a plurality of threads twisted of two subscribing witnesses. together,and said sheathing consisting of steel strands twisted together, each steel strand WILLIAM TUCKER consisting of a plurality of fine Wires twisted Witnesses: together.

Description

Patented 06. 24, 1901. w. A. TUCKER.
P U L L C 0 B D (Application flledAug. 1, 1901.)
(lo MudeL) INVENTOR 7mm WITNESSES:
ATTORNEY HE NdRRlS vzrsn: co., PH
UNITED STATES PATENT OFFICE.
WILLIAM A. TUCKER, OF NEw YORK, N. Y., ASSIGNOR TO TUCKER &.CAR ER ROPE COMPANY, A CORPORATION OF NEW YORK.
PULL-CORD.
SPECIFICATION formingpart of Letters Patent No. 689,662, dated December 24, 1901.
Application filed August 1, 1901- Serial No. 70,474. (No model.)
and maximum flexibility at comparatively low cost and which shall be adapted to be used as a bell-cord, as belting for transmission of power, for operating steering-gear of small vessels, and for other purposes where nonstretchability, flexibility, and strength are required in a pull-cord.
The invention consists of a pull-cord having a flexible steel core and a flexible exterior surrounding the core made of strands of fibrous material--such as cotton, jute, hemp, &c.-braided, twisted, or woven together. In the best form Of the invention the core has a central strand of fibrous material which is sheathed within a plurality of steel strands. The steel strands are generally twisted together, and each such strand preferably consists of a plurality of fine steel wires twisted together to form a strand.
In the accompanying drawings, forming part of this specification, I have shown one of the various embodiments of the invention, like reference-numerals referringto the same parts in both figures of the drawings.
Figure 1 is a side elevation showing the improved pull-cord, the strandsof the exterior being cut off to expose the core and all the strands of the cord being frayed and spread out. Fig. 2isatransverse section of the cord.
Referring now more particularly to the precise structure shown in the drawings, 1 is the exterior of the cord, composed of some seventeen separate strands 2 braided together, each strand being composed of a number of threads 3 twisted together to form a strand 2. The core 4. is composed of a plurality of separate steel strands 5 twisted together, each strand,
5 being composed of a plurality of separate fine steel wires (5 twisted together to form a strand 5. The core also preferably has, as shown, a central strand 7, sheathed within the core 4 and made of fibrous material. This central strand 7, shown in the drawings, is preferably made of a plurality of separate smaller com ponentstrands 8-twisted together, each such strand 8 being made of a number of threads twisted together.
Of course various modifications may be made in the structure of the cord without depart- 6o ing from the scope of the invention. For example, the strands composing the exterior and core may be varied in number, and the central strand 7 may in some cases be omitted. Again, the strands 5 of the core may be braided or woven together instead of being twisted together. The same is true of the strands 8.
By means of this invention a pull-cord is provided of superior quality and efficiency.
Pull-cords as heretofore made are subject to a Considerable degree of extensibility or stretch under the strains incident to use, and this is a recognized defect requiring frequent adjustment of the cord to maintain its efflciency. The problem of overcoming this defeet and of maintaining at the same time the requisite flexibility is successfully solved by this invention. At the same time the strength of the cord is greatly increased without increasing its size.
What I desire to claim and secure by Letters Patent is p 1. A non-stretchable, flexible pull-cord including in its structure a flexible core made of a central strand of fibrous material with a sheathing therefor made of separate steel strands twisted together, each strand of which consists of a plurality of tine wires twisted together; and a flexible exterior made of braided, twisted, or woven strands of fibrous material.
2. A non-stretchable, flexible pull-cord including in its structure a flexible core made Of a central strand of fibrous material with a sheathing therefor made of separate closelyassociated steel strands; and a flexible exterior made of braided, twisted, or woven strandsof fibrous material, said central strand name to this specification in the presence consisting of a plurality of threads twisted of two subscribing witnesses. together,and said sheathing consisting of steel strands twisted together, each steel strand WILLIAM TUCKER consisting of a plurality of fine Wires twisted Witnesses: together. NICHOLAS M. GOODLETT, J in,
In testimony whereof I have signed my ELMER E. COOLEY.
US7047401A 1901-08-01 1901-08-01 Pull-cord. Expired - Lifetime US689662A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US7047401A US689662A (en) 1901-08-01 1901-08-01 Pull-cord.

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US7047401A US689662A (en) 1901-08-01 1901-08-01 Pull-cord.

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US689662A true US689662A (en) 1901-12-24

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US7047401A Expired - Lifetime US689662A (en) 1901-08-01 1901-08-01 Pull-cord.

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3036490A (en) * 1957-09-18 1962-05-29 Glanzstoff Ag Mountaineering ropes
US4768619A (en) * 1987-11-18 1988-09-06 George Darnell Fire escape device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3036490A (en) * 1957-09-18 1962-05-29 Glanzstoff Ag Mountaineering ropes
US4768619A (en) * 1987-11-18 1988-09-06 George Darnell Fire escape device

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