US763284A - Portable scaffold-chair. - Google Patents

Portable scaffold-chair. Download PDF

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Publication number
US763284A
US763284A US14581303A US1903145813A US763284A US 763284 A US763284 A US 763284A US 14581303 A US14581303 A US 14581303A US 1903145813 A US1903145813 A US 1903145813A US 763284 A US763284 A US 763284A
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Prior art keywords
chair
frame
scaffold
portable scaffold
building
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Expired - Lifetime
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US14581303A
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Max Heike
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Individual
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Priority to US14581303A priority Critical patent/US763284A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R3/00—Arrangements of steps or ladders facilitating access to or on the vehicle, e.g. running-boards
    • B60R3/007—Removable steps or ladders, e.g. foldable
    • 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
    • E04G3/00—Scaffolds essentially supported by building constructions, e.g. adjustable in height
    • E04G3/22—Scaffolds essentially supported by building constructions, e.g. adjustable in height supported by roofs or ceilings

Definitions

  • the main objects of my invention are to provide an improved scaffold-chair and supports therefor particularly adapted for use by painters in working along the walls of a building, to suitably arrange the device to be shifted from side to side and to be raised and lowered by mechanism located conveniently to the operator on the chair, and to provide a convenient management of self-locking mechanism for raising and lowering the chair.
  • Figure 1 is a front elevation of a device constructed according to my invention.
  • Fig. 2 is a side elevation of same.
  • the rail or track 1 is suspended from members 2, each having therein an aperture 3, through which the device may be suitably suspended from hooks engaging the cornice of a building.
  • the rail is constructed of two angle-irons, each having a flange 4 for supporting one of the wheels 5.
  • the wheels 5 are journaled in a hanger 6, which has suspended therefrom a sheave 7.
  • the hanger 6 also has journaled thereon a sheave 8, which is rigid on the shaft of one of the wheels 5 and which supports an endless rope 9.
  • the frame 10 of the chair is suspended from the sheave 7 by means of the rope 11, which has one end secured to the yoke 21, forming part of the frame 10, and which passes through the fairleader 22 and has its opposite end wound upon the drum 12.
  • the fair-leader 22 is longitudinally slidable on bar 23.
  • the drum is rigidly mounted on the shaft 13, which is journaled on the lower part of the frame 10.
  • Said shaft 13 has rigidly mounted thereon a wormwhecl 14, in mesh with the worm 15, which is journaled in the frame and provided with a crank-handle 16.
  • a seat or working platform 17 is secured to the frame 10 and has a pair of projecting arms 18, braced at 19, and each provided with a suitable roller 20, which is intended for bearing against the wall along which said device is suspended.
  • the operation of the device shown is as follows:
  • the rail 1 will be suitably suspended suitable hooks secured to the members 2.
  • the chair may be moved from side to side along the rail 1 by turning the sheave 8 by means of the endless rope 9.
  • the operator may readily raise and lower the chair by turning the crank 16, so as to either wind or unwind the rope 11 on the drum 12.
  • the worm-gear is self-locking, and it is therefore impossible to accidentally release the drum and allow the device to fall.
  • the form of yoke 21 shown permits the device to hang in equilibrium from a single rope and leaves open the side of the frame which is toward the building. It will be seen that the form of my hanger 6 with its wheels 5 will permit the device to run along a rail which is curved to extend around the corner of a building.
  • a chair comprising a metallic open frame, a seat 17 secured to the frame, a pair of outwardly-projecting arms carried by said seat, braces for said arms, and aroller journaled in the outer ends of said arms.

Description

No. 763,284. I PATENTED JUNE 21, 1904.
M. HEIKB. PORTABLE SCAPFOLD CHAIR.
l APPLIOATION rum) MAR. 2, 1903. NOMODEL.
UNITED STATES Patented June 21, 1904.
PATENT ()FFICE.
MAX HEIKE, OF MELROSE PARK, ILLINOIS.
SPECIFICATION formingpart of Letters Patent No. 763,284., dated June 21, 1904.
Application filed March 2, 1903. Serial No. 145,813. (No model.)
To (all whom, it may concern.-
Be it known that I, MAX HEIKE, a citizen of the United States of America, and a resident of lWIelrose Park, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Portable Scaffold- Chairs, of which the following is a specification.
The main objects of my invention are to provide an improved scaffold-chair and supports therefor particularly adapted for use by painters in working along the walls of a building, to suitably arrange the device to be shifted from side to side and to be raised and lowered by mechanism located conveniently to the operator on the chair, and to provide a convenient management of self-locking mechanism for raising and lowering the chair. I accomplish these objects by the device shown in the accompanying drawings, in which Figure 1 is a front elevation of a device constructed according to my invention. Fig. 2 is a side elevation of same.
The rail or track 1 is suspended from members 2, each having therein an aperture 3, through which the device may be suitably suspended from hooks engaging the cornice of a building. The rail is constructed of two angle-irons, each having a flange 4 for supporting one of the wheels 5. The wheels 5 are journaled in a hanger 6, which has suspended therefrom a sheave 7. The hanger 6 also has journaled thereon a sheave 8, which is rigid on the shaft of one of the wheels 5 and which supports an endless rope 9. The frame 10 of the chair is suspended from the sheave 7 by means of the rope 11, which has one end secured to the yoke 21, forming part of the frame 10, and which passes through the fairleader 22 and has its opposite end wound upon the drum 12. The fair-leader 22 is longitudinally slidable on bar 23. The drum is rigidly mounted on the shaft 13, which is journaled on the lower part of the frame 10. Said shaft 13 has rigidly mounted thereon a wormwhecl 14, in mesh with the worm 15, which is journaled in the frame and provided with a crank-handle 16. A seat or working platform 17 is secured to the frame 10 and has a pair of projecting arms 18, braced at 19, and each provided with a suitable roller 20, which is intended for bearing against the wall along which said device is suspended.
The operation of the device shown is as follows: The rail 1 will be suitably suspended suitable hooks secured to the members 2. The chair may be moved from side to side along the rail 1 by turning the sheave 8 by means of the endless rope 9. The operator may readily raise and lower the chair by turning the crank 16, so as to either wind or unwind the rope 11 on the drum 12. The worm-gear is self-locking, and it is therefore impossible to accidentally release the drum and allow the device to fall. The form of yoke 21 shown permits the device to hang in equilibrium from a single rope and leaves open the side of the frame which is toward the building. It will be seen that the form of my hanger 6 with its wheels 5 will permit the device to run along a rail which is curved to extend around the corner of a building.
I am aware that the broad feature of suspending a scaffold from a rail secured along the side of a building has been used heretofore and am also aware that such scaffolds have been arranged so as to be raised and lowered by an operator on the scaffold, and I therefore do not broadly claim such features.
What I claim as my invention, and desire to secure by Letters Patent, is-
In combination with the supporting means, a chair comprising a metallic open frame, a seat 17 secured to the frame, a pair of outwardly-projecting arms carried by said seat, braces for said arms, and aroller journaled in the outer ends of said arms.
Signed at Chicago this 26th day of February, 1903.
MAX HEIKE. Witnesses:
RUDow RUMMLER, WM. R. RUMMLER.
55 from the cornice of a building by means of
US14581303A 1903-03-02 1903-03-02 Portable scaffold-chair. Expired - Lifetime US763284A (en)

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US14581303A US763284A (en) 1903-03-02 1903-03-02 Portable scaffold-chair.

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US14581303A US763284A (en) 1903-03-02 1903-03-02 Portable scaffold-chair.

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US763284A true US763284A (en) 1904-06-21

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US14581303A Expired - Lifetime US763284A (en) 1903-03-02 1903-03-02 Portable scaffold-chair.

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2977083A (en) * 1958-04-09 1961-03-28 Lev L It Stirrup Company Inc Scaffold stirrup

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2977083A (en) * 1958-04-09 1961-03-28 Lev L It Stirrup Company Inc Scaffold stirrup

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