IMPROVEMENTS IN AND RELATING TO HOISTING PROVISIONAL SPECIFICATION
Year: 1880

page_text: LETTERS PATENT to Frederick Robert Ellis, of Liverpool, in the County of
Lancaster, for an Invention of "IMPROVEMENTS IN AND RELATING TO HOISTING
PROVISIONAL SPECIFICATION left by the said Frederick Robert Ellis at the
Office of the Commissioners of Patents on the 20th April 1880.
_FREDERICK ROBERT ELLIS, of Liverpool, in the County of Lancaster.
"IMPROVEMENTS IN AND RELATING TO HOISTING APPARATUS FOR WAREHOUSE
AND LIKE PURPOSES."
My Invention relates to a novel form of reversible double friction hoist for
warehouse and like purposes, and consists of a spur wheel mounted on a main
driving shaft, which may be continuously running. This spur wheel gears into a
second spur wheel, which is arranged in gear with a third and like spur wheel.
These two latter spur wheels are provided with friction wheels or drums. Positioned
intermediately with these two friction wheels is a third friction wheel which is
keyed or otherwise secured to the rope barrel and barrel shaft. One end of this
barrel shaft runs in a bearing which is formed in an eccentric or cam or sliding
block, and provided with a lever or its equivalent, by which arrangement the
friction wheel of the barrel shaft can be held intermediately or put into gear with
either of the friction wheels which are receiving motion from the spur wheel of the
main driving shaft. A second barrel may be provided below the main barrel and
driven by spur wheels therefrom, so that greater power may be obtained if
required. The main barrel may be provided with two ropes, so that when one is
being wound the other is being unwound, the reverse action being obtained by
throwing the friction wheel of the main barrel into gear with either of the running
friction wheels as may be required.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Frederick Robert Ellis in the Great Seal Patent Office on the 19th
October 1880.
FREDERICK ROBERT ELLIS, of Liverpool, in the County of Lancaster.
"IMPROVEMENTS IN AND RELATING TO HOISTING APPARATUS FOR WAREHOUSE 5
AND LIKE PURPOSES."
My Invention relates to a novel construction of reversible double friction hoist
for warehouse and like purposes, and the following is a full, clear, and exact
description thereof, reference being had to the accompanying Sheet of Drawings,
and to the letters and Figures of reference marked thereon, like letters and Figures 1
being used to denote the same or corresponding parts throughout the various
views.
Figure 1 represents a diagram of a reversible double friction hoist according to
my Invention.
Figure 2 is an end elevation of the friction hoist, and
Figure 3 is a front elevation of the same.
1
Upon reference to the Drawings it will be seen that a hoist constructed according
to my Invention consists of two spur wheels A and B geared together and keyed
on the shafts A¹, B', either of which may be the main driving shaft, which is kept
continuously running, or a may be the main driving shaft, the spur wheel a¹ of 2
which drives the spur wheel A. The spur wheels A, B, are provided with friction
wheels or drums C, D, which are mounted and keyed on the shafts A¹, B¹, as
shown. Positioned intermediately with these two friction wheels C, D, is a third
friction wheel E which is keyed or otherwise secured onto the first power barrel
and shaft Q. One end of the barrel shaft Q runs in a bearing which is formed in 2
an eccentric F, the equivalent of which may be a sliding block in the frame U.
The eccentric F is operated by the lever G, by which arrangement the friction
wheel E can be held intermediately or put into gear with either of the friction
wheels C, D, which are running in reverse directions and receiving motion from the
spur wheel of the main driving shaft; S is a second or double purchase barrel driven
by the spur wheels M, N. On M thero is a clutch T to throw it out of gear with the
wheel N; O and P are the ropes or chains from the barrel Q. When the hoist is
in action one rope or chain lifts the the load, and the other descends light. When
the hoist is not working the friction wheel E is just clear of the two small friction
wheels C, D, and is held by the break L and lever and weight K; H is the starting
lever, which operates the lever G, and thereby the break L and the friction
wheel E; I and J are starting ropes which operate the lever H
In operation the wheels A, B, C, D, are always running when it is required to
lift with the barrel Q, one of the ropes I or J being pulled will at once move the
levers H, G, which will at once actuate the break lever K and ease the break L off
the friction wheel E; the same movement throws the eccentric F onto one side or
the other, so that the friction wheel E is moved onto one or the other of the sinall
friction wheels C or D, thus causing the barrel to revolve, winding one rope I
or J, and lowering the other. When the load is lifted the break L comes into
action and safely suspends the load. The reverse motion is given by changing the
position of the eccentric F, causing the wheel E to bear on the opposite of the
wheels C, D, to that which previously operated it.
Having now described and ascertained the nature, object, and purposes of my
Invention, and shown how the same may be put into practical operation, what I
claim as my Invention is,-
First. Constructing and arranging reversible continuous friction boists in the

page_text: manner as described in the before going Specification, and illustrated in the
accompanying Drawings.
Second. In continuous or other friction hoists the use of an eccentric bearing,
such as F, for reversing the action of the hoist in the manner herein described, and
as illustrated in the accompanying Drawings.
In witness whereof, I, the said Frederick Robert Ellis, have hereunto set
my hand and seal, this Fifteenth day of October, in the year of our Lord
One thousand eight hundred and eighty.
FREDERICK ROBERT ELLIS. (L.g.)