US848114A - Gymnasium-ladder. - Google Patents

Gymnasium-ladder. Download PDF

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Publication number
US848114A
US848114A US31059506A US1906310595A US848114A US 848114 A US848114 A US 848114A US 31059506 A US31059506 A US 31059506A US 1906310595 A US1906310595 A US 1906310595A US 848114 A US848114 A US 848114A
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United States
Prior art keywords
side rails
ladder
plates
gymnasium
tie
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Expired - Lifetime
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US31059506A
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Frederick Medart
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Individual
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Priority to US31059506A priority Critical patent/US848114A/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
    • 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
    • Y10T403/00—Joints and connections
    • Y10T403/33—Transverse rod to spaced plate surfaces

Definitions

  • Figure 1 is a perspective View of a portion of a ladder embodying the present invention.
  • Fig. 2 is a detail horizontal section of the same on line w as, Fig. 3.
  • Fig. 3 is a detail vertical section of the same on line 00 as, Fig. 2.
  • Said side rails 1. are a series of side rails grouped together in pairs having a separated relation in one direction, and which pairs in turn have a separated relation in the other direction to constitute the respective side rails of a ladder.
  • Said side rails 1. maybe formed of any suitable material and of circular shape in cross-section. It is, however, preferable to employ metal tubes of a circular cross-section as affording combined durability, strength, and lightness.
  • the plates 2 are a series of tie or clamping plates or members located between the side rails at the inner side thereof by which the aforesaid pairs of side rails 1 are connected together intermediate of their length, such arrangement affording strength and rigidity to the structure.
  • the plates are formed with fiat outer faces, and short segmental flanges 3 will be formed at the respective ends of said plates, and rivetbolts 4 or like attaching means will be employed to secure the parts together.
  • a gymnasium-ladder comprising pairs of side rails of circular shape in cross-section, tie-plates fitting between the rails at the inner side thereof and formed with flat outer faces and short segmental flanges fitting against the rounded faces of the rails and means for fasteningthe tie-plates by their short segmental flanges'to the side rails.
  • a gymnasium-ladder comprising pairs of side rails of circular shape in crosssection
  • tie-plates fitting between the side rails at the inner side thereof so as to leave the outer sides and front and back of the side rails unobstructed, and formed with flat. outer faces and short segmei'ital flanges fitting against the inner sides of the rounded faces of the side rails, means for fastening the tie-plates by their short segmental flanges to the side rails, and rounds secured to the tie-plates between the front and back side rails of each pair of side rails.

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

Description

PATENTED MAR. 26, 1907.
r. MEDART. GYMNASIUM LADDER; I APPLICATION FILED APR. 9,1906,
1n: mamas PETERS co., w: summon, n. c.
FREDERICK MEDART, OF ST. LOUIS, MISSOURI.
GYMNASIUM-LADDER.
Specification of Letters Patent.
Patented March 26, 1907.
Application filed April 9,1906. Serial No. 310,595.
To aZll w/wm/ it nuty concern.-
Be it known that I, FREDERICK MEDART, a citizen of the United States of America, and a resident of St. Louis, in the State of Missouri, have invented certain new and useful formation and combination of parts adapted to afford a very strong, substantial, and economical construction, all as will hereinafter more fully appear.
In the accompanying drawings, Figure 1 is a perspective View of a portion of a ladder embodying the present invention. Fig. 2 is a detail horizontal section of the same on line w as, Fig. 3. Fig. 3 is a detail vertical section of the same on line 00 as, Fig. 2.
Similar numerals of reference indicate like parts in the several views.
Referring to the drawings, 1 are a series of side rails grouped together in pairs having a separated relation in one direction, and which pairs in turn have a separated relation in the other direction to constitute the respective side rails of a ladder. Said side rails 1. maybe formed of any suitable material and of circular shape in cross-section. It is, however, preferable to employ metal tubes of a circular cross-section as affording combined durability, strength, and lightness.
2 are a series of tie or clamping plates or members located between the side rails at the inner side thereof by which the aforesaid pairs of side rails 1 are connected together intermediate of their length, such arrangement affording strength and rigidity to the structure. In the preferred form of the said plates, as shown in the drawings, the plates are formed with fiat outer faces, and short segmental flanges 3 will be formed at the respective ends of said plates, and rivetbolts 4 or like attaching means will be employed to secure the parts together.
5 are the ladder-rounds of any suitable material, preferably metal tubing, as shown, and which are secured at their respective ends to the middle portions of the aforesaid tie-plates 2, preferably by means of the centrally-arranged nipples 6 thereon, as shown.
Having thus fully described my said invention, what I claim as new, and desire to secure by Letters Patent, is-
A gymnasium-ladder comprising pairs of side rails of circular shape in cross-section, tie-plates fitting between the rails at the inner side thereof and formed with flat outer faces and short segmental flanges fitting against the rounded faces of the rails and means for fasteningthe tie-plates by their short segmental flanges'to the side rails.
2. A gymnasium-ladder comprising pairs of side rails of circular shape in crosssection,
tie-plates fitting between the side rails at the inner side thereof so as to leave the outer sides and front and back of the side rails unobstructed, and formed with flat. outer faces and short segmei'ital flanges fitting against the inner sides of the rounded faces of the side rails, means for fastening the tie-plates by their short segmental flanges to the side rails, and rounds secured to the tie-plates between the front and back side rails of each pair of side rails.
Signed at St. Louis, Missouri, this 5th day of April, 1906.
FREDERICK MEDART.
Witnesses:
JOHN C. LOERCH, Jr., I-I. HAEFNER.
US31059506A 1906-04-09 1906-04-09 Gymnasium-ladder. Expired - Lifetime US848114A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US31059506A US848114A (en) 1906-04-09 1906-04-09 Gymnasium-ladder.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US31059506A US848114A (en) 1906-04-09 1906-04-09 Gymnasium-ladder.

Publications (1)

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US848114A true US848114A (en) 1907-03-26

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2578397A (en) * 1948-02-10 1951-12-11 Arnolt Corp Furniture construction
US2598278A (en) * 1946-03-07 1952-05-27 Louisville Metal Products Comp Ladder structure
US4074377A (en) * 1976-07-08 1978-02-21 Gutner Kenneth H Bed canopy frame
US5156234A (en) * 1990-09-18 1992-10-20 Mccallum Enterprises Limited Ladder structure
US20160032650A1 (en) * 2014-07-29 2016-02-04 Werner Co. Composite Rung for a Ladder and Method

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2598278A (en) * 1946-03-07 1952-05-27 Louisville Metal Products Comp Ladder structure
US2578397A (en) * 1948-02-10 1951-12-11 Arnolt Corp Furniture construction
US4074377A (en) * 1976-07-08 1978-02-21 Gutner Kenneth H Bed canopy frame
US5156234A (en) * 1990-09-18 1992-10-20 Mccallum Enterprises Limited Ladder structure
US20160032650A1 (en) * 2014-07-29 2016-02-04 Werner Co. Composite Rung for a Ladder and Method
US10760335B2 (en) * 2014-07-29 2020-09-01 Werner Co. Composite rung for a ladder and method

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