US155969A - Improvement in scaffolds - Google Patents

Improvement in scaffolds Download PDF

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Publication number
US155969A
US155969A US155969DA US155969A US 155969 A US155969 A US 155969A US 155969D A US155969D A US 155969DA US 155969 A US155969 A US 155969A
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Prior art keywords
piece
improvement
metal
scaffolds
perkins
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Expired - Lifetime
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G7/00—Connections between parts of the scaffold
    • E04G7/02—Connections between parts of the scaffold with separate coupling elements
    • E04G7/06—Stiff scaffolding clamps for connecting scaffold members of common shape
    • E04G7/12—Clamps or clips for crossing members
    • E04G7/18—Clamps or clips for crossing members for clamping the members against one another or against a separate cushioning piece between them
    • 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
    • Y10T403/71—Rod side to plate or side
    • Y10T403/7182—Yoke or ring-type connector
    • Y10T403/7188—Rod received in open channel

Definitions

  • the object of my invention is to furnish a scatt'olding for painters and builders, and the machine Will be more particularly described With reference to the accompanying drawing.
  • A is a piece of timber', of any desired length, With a depth of six inches or more, and Whose thickness may be two inches.
  • vay a are slots or openings, in which screw-bolts' are placed, attached to an upright piece of metal, a, that, when not in use, is free to be moved back and forth through the length ot' the slots.
  • b is a piece ot' metal which is held by the thun1bscrews i i against the casing when adjusted, serving to protect the saine from injury, the piece ce being first made fast by means of the screw-bolts.
  • O is a piece of metal, either straight or in the shape of a molding to a door or Window, and ttingthe Wall, Window, or door when properly adjusted, so that, in
  • connection with b when arranged, it makes a clamp on the inside and outside of the Window or door, holding the piece of timber A in its position.
  • a block of rubber may be used on the inside or Wall side of the metal clamp b, for the further protection of the casing and giving some elasticity of adjustment. fis a metal face on both sides ot' the block A, ex' tending from g to g', to give strength to the same.
  • the outer end of the arin or block ot' tiinber A from which tackling is suspended, and upon which the scaii'old or bed is to rest, is broken away in the drawing.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Pretreatment Of Seeds And Plants (AREA)
  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)

Description

M. PERKINS.
Scaffnlds.
N0. 155,969. Patented Oct. 13,1874.
PATENT OFFICE.
MARTIN PERKINS-OF BALTIMORE, MARYLAND, ASSIGNOR OF TWO-THIRDS HIS RIGHT TO B. F. MCTYRE AND JOHN G. MITCHELL.
IMPROVEMENT lN SCAFFOLDS.
Specification forming part of Letters Patent No. 155,969, dated October 13, 1874 application tiled September 26, 1874.
To all whom it may concern Be it known that I, MARTIN PERKINS, of Baltimore city, State of Maryland, have invented an Improvement in Scaffolding for the Use of Painters, Builders, Ste., of which the following is a specication:
The object of my invention is to furnish a scatt'olding for painters and builders, and the machine Will be more particularly described With reference to the accompanying drawing.
A is a piece of timber', of any desired length, With a depth of six inches or more, and Whose thickness may be two inches. vay a are slots or openings, in which screw-bolts' are placed, attached to an upright piece of metal, a, that, when not in use, is free to be moved back and forth through the length ot' the slots. b is a piece ot' metal which is held by the thun1bscrews i i against the casing when adjusted, serving to protect the saine from injury, the piece ce being first made fast by means of the screw-bolts. O is a piece of metal, either straight or in the shape of a molding to a door or Window, and ttingthe Wall, Window, or door when properly adjusted, so that, in
connection With b, when arranged, it makes a clamp on the inside and outside of the Window or door, holding the piece of timber A in its position. A block of rubber may be used on the inside or Wall side of the metal clamp b, for the further protection of the casing and giving some elasticity of adjustment. fis a metal face on both sides ot' the block A, ex' tending from g to g', to give strength to the same. The outer end of the arin or block ot' tiinber A, from which tackling is suspended, and upon which the scaii'old or bed is to rest, is broken away in the drawing.
I claim as nly invention- The arm A, with slots a and a', upright piece of metal a, upright b, molding-shaped piece O, thumb-screws iz, metal faces f, all in combination, for the purpose of forming a scaffold for painters7 and builders7 use, substantially as specified.
MARTIN PERKINS.
Witnesses:
JNO. G. MITCHELL, Jos. T. K PLANT.
US155969D Improvement in scaffolds Expired - Lifetime US155969A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4187658A (en) * 1976-05-20 1980-02-12 Illinois Tool Works Inc. Panel clamp

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4187658A (en) * 1976-05-20 1980-02-12 Illinois Tool Works Inc. Panel clamp

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