Improvement in Painter's Scaffold-chairs. Page: 2 of 2
[2] p. : ill. ; 23 cm.View a full description of this patent.
Extracted Text
The following text was automatically extracted from the image on this page using optical character recognition software:
UNITED STATES PATENT OFFICE
JOHN R. CROCKETT, OF FLATONIA, TEXAS.
IMPROVEMENT IN PAINTERS' SCAFFOLD-CHAIRS.
Specification forming part of Letters Patent No. 177,477, dated May 16, 1876; application filed
March 21, 1876.To all whom it mnay concern:
Be it known that 1, JOHN RICHARDSON
CROCKETT, of Flatonia, in the county of Fay-
ette and State of Texas, have invented a new
and Improved Painter's Scaffold-Chair, of
which the following is a specification :
In the accompanying drawing, Figure 1
represents a sectional side elevation of my
improved scaffold-chair for painters ; and Fig.
2, a front view of the same.
Similar letters of reference indicate corre-
sponding parts.
The object of my invention is to furnish for
the use of house-painters and others an im-
proved scaffold-chair that may be elevated
and lowered at pleasure by the person sitting,
on the scaffold, and be moved sidewise to ob-
tain a greater reach for the work.
The invention consists of a scaffold made in
the shape of a chair, with mechanism to raise
and lower by a suspension-rope that is carried
over suitable friction-pulleys of the chair-
frame.
In the drawing, A represents a painter's
scaffold that is constructed in the shape of a
chair, with a seat, B, foot-board, arid side
standards or boards C, which extend from the
lower part upward, and curve forward at the
top part to guide the suspension-rope D. The
rope D is secured to the roof of the building
and passed between central friction-rollers a
at the top cross-piece of the chair, and over
friction-rollers b at the rear part of the scaf-
fold to a windlass, E, located vertically below
the top rollers. The rope is wound up on the
windlass by suitable cog-wheel and crank
mechanism at the outside of the standards C.
The painter sits on the scaffold-chair andraises and lowers himself along the rope by
turning the crank and gear wheels and wind-
ing or unwinding the rope. A ratchet and
pawl mechanism locks the gear-wheels as soon
as the turning of the crank is interrupted.
The foot-board may be constructed to act as
a brake, so that by releasing the pawl the
operator may lower himself in quicker man-
ner than by turning the crank. The scaffold-
chair may also be swung some distance from
its vertical position by means of ropes passing
over suitable windlass-rollers to each side of
the house, so as to give the operator a larger
reach and admit quicker accomplishing of the
work. The scaffold - chair is securely sus-
pended and evenly balanced on the ropes,
arid filrnishes a secure and reliable support
for the operator with the facility of adjusting
himself readily to the progress of his work.
Having thus described my invention, what I
claim as new, and desire to secure by Let-
ters Patent, is-
1. The combination of a scaffold-chair with
hoisting and lowering windlass mechanism,
and suspension-ropes, guided on rear, top,
and side pulleys, all arranged substaniitially
in the manner and for the purpose set forth.
2. A scaffold-chair for painters' use, which
is hoisted or lowered by suitable windlass
mechanism placed below tihe seat on a suspen-
sion-rope passing over rear and top guide-pul-
leys to keep the chair in balanced position,
substantially as described.
J. R. CROCKETT.
Witnesses:
J. M. HARRISON,
C. J. LANE.
Search Inside
This patent can be searched. Note: Results may vary based on the legibility of text within the document.
Tools / Downloads
Get a copy of this page or view the extracted text.
Citing and Sharing
Basic information for referencing this web page. We also provide extended guidance on usage rights, references, copying or embedding.
Reference the current page of this Patent.
Crockett, John R. Improvement in Painter's Scaffold-chairs., patent, May 16, 1876; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth166547/m1/2/: accessed June 20, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.