US950807A - Wire ladder. - Google Patents

Wire ladder. Download PDF

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Publication number
US950807A
US950807A US49118109A US1909491181A US950807A US 950807 A US950807 A US 950807A US 49118109 A US49118109 A US 49118109A US 1909491181 A US1909491181 A US 1909491181A US 950807 A US950807 A US 950807A
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United States
Prior art keywords
ladder
wire
payne
portions
wire ladder
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Expired - Lifetime
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US49118109A
Inventor
John Ross
George Payne
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.)
ANDREW ROBERTSON PAYNE
Original Assignee
ANDREW ROBERTSON PAYNE
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Application filed by ANDREW ROBERTSON PAYNE filed Critical ANDREW ROBERTSON PAYNE
Priority to US49118109A priority Critical patent/US950807A/en
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C7/00—Component parts, supporting parts, or accessories
    • E06C7/08—Special construction of longitudinal members, or rungs or other treads

Definitions

  • JOHN ROSS AND GEORGE PAYNE OF ORILLIA, ONTARIO, CANADA, ASSIGNORS OF ONE- THIRD T0 ANDREW ROBERTSON PAYNE, OF ORILLIA, CANADA.
  • Our invention relates to improvements in wire ladders, and the object of the invention is to devise a very simple and cheaply constructed ladder, which will be durable, strong and light and practically unnoticeable on a building when set up and necessarily not liable to be burned.
  • Our invention consists of a ladder made of wire strands arranged in rectangular zigzag fashion, so that the crossed portions lying adjacent are twisted together to form the rung, a tubular reinforcement being provided for each rung and the parts being otherwise constructed and arranged in detail as hereinafter more particularly explained.
  • Figure 1 is a view of a portion of a lad der showing the two strands, which form the same arranged prior to twisting.
  • Fig. 2 is a view showing the completed ladder.
  • Fig. 8 is a vertical section.
  • Fig. 4; is a detail of a modification.
  • Fig. 5, is a section through the modification.
  • a and B are the strands of the wire ladder, which are arranged in longitudinal rectangular zigzag shape fashion with the ver- Specification of letters Patent.
  • tical portions A and B and the cross portions A and B The cross portions are twisted together by a suitable machine, so that there is a double twist ending in the center as indicated in Fig. 2.
  • the longitudinal portions A. and B are preferably given a concave bend as indicated in Fig. 3.
  • Fig. 4 we show the longitudinal portions A. and B straight and we also show split sleeves C, which are placed 011 the twisted rungs and are of such a diameter as will hold the ladder out from the wall, so as to form a secure step of each rung.
  • the sleeves are sprung over the twisted rungs and then pressed, so as to hold them in position and prevent them getting detached.
  • a ladder comprised of longitudinal strands of wire arranged in rectangular zigzag fashion and having the cross portions of the wire lying adjacent to each other and twisted in a double twist ending in the center to form rungs as and for the purpose specified.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ladders (AREA)

Description

J. ROSS 8: G. PAYNE.
WIRE LADDER.
APPLIOATION FILED APR. 20, 1909.
Patented Mar. 1, 1910.
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JOHN ROSS AND GEORGE PAYNE, OF ORILLIA, ONTARIO, CANADA, ASSIGNORS OF ONE- THIRD T0 ANDREW ROBERTSON PAYNE, OF ORILLIA, CANADA.
VIBE LADDER.
To all whom it may concern:
Be it known that we, JOHN Ross and GEORGE PAYNE, both of the town of ()rillia, in the county of Simcoe, in the Province of Ontario, Canada, have invented certain new and useful Improvements in Wire Ladders, of which the following is a specification.
Our invention relates to improvements in wire ladders, and the object of the invention is to devise a very simple and cheaply constructed ladder, which will be durable, strong and light and practically unnoticeable on a building when set up and necessarily not liable to be burned.
Our invention consists of a ladder made of wire strands arranged in rectangular zigzag fashion, so that the crossed portions lying adjacent are twisted together to form the rung, a tubular reinforcement being provided for each rung and the parts being otherwise constructed and arranged in detail as hereinafter more particularly explained.
Figure 1, is a view of a portion of a lad der showing the two strands, which form the same arranged prior to twisting. Fig. 2, is a view showing the completed ladder. Fig. 8, is a vertical section. Fig. 4;, is a detail of a modification. Fig. 5, is a section through the modification.
In the drawings like letters of reference indicate corresponding parts in each figure.
A and B are the strands of the wire ladder, which are arranged in longitudinal rectangular zigzag shape fashion with the ver- Specification of letters Patent.
Application filed April 20, 1909.
Patented Mar. 1, 191d.
Serial No. 491,181.
tical portions A and B and the cross portions A and B The cross portions are twisted together by a suitable machine, so that there is a double twist ending in the center as indicated in Fig. 2. The longitudinal portions A. and B are preferably given a concave bend as indicated in Fig. 3.
In Fig. 4, we show the longitudinal portions A. and B straight and we also show split sleeves C, which are placed 011 the twisted rungs and are of such a diameter as will hold the ladder out from the wall, so as to form a secure step of each rung. The sleeves are sprung over the twisted rungs and then pressed, so as to hold them in position and prevent them getting detached.
Such a ladder as we describe is simple, very cheap to make and being unnoticeable can be used for many purposes where the ordinary heavy wooden ladder would be very unsightly.
What we claim as our invention is:
A ladder comprised of longitudinal strands of wire arranged in rectangular zigzag fashion and having the cross portions of the wire lying adjacent to each other and twisted in a double twist ending in the center to form rungs as and for the purpose specified.
JOHN ROSS. GEO. PAYNE.
Witnesses:
J. O. WALLACE, B. HAYWOOD.
US49118109A 1909-04-20 1909-04-20 Wire ladder. Expired - Lifetime US950807A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US49118109A US950807A (en) 1909-04-20 1909-04-20 Wire ladder.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US49118109A US950807A (en) 1909-04-20 1909-04-20 Wire ladder.

Publications (1)

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US950807A true US950807A (en) 1910-03-01

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US49118109A Expired - Lifetime US950807A (en) 1909-04-20 1909-04-20 Wire ladder.

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