Improved Mechanism Applicable for Hoisting, Exerting Pressure or Tension, or Regulating Motion.
Year: 1889

page_text: Date of Application. 15th July, 1889
Complete Specification Left, 9th Apr., 1890-Accepted, 15th July 1890
PROVISIONAL SPECIFICATION.
Improved Mechanism Applicable for Hoisting, Exerting Pressure or
Tension, or Regulating Motion.
ROBERT CHEW and HENRY BARMBY, of 3A North Road Preston Lancashire,
Engineers, do hereby declare the nature of our invention for an improved mechanism
applicable for Hoisting, exerting pressure or tension or regulating motion, to be as
follows:-
Our invention is for the purpose of lifting, lowering, stretching, or compressing
of any material or substance, or for starting, stopping, or controlling any machine or
substance, either by hand or any other power.
The apparatus is constructed by an eccentric attached to a handle or pulley, work-
ing on a stud firmly secured to a base plate, which eccentric moves a cog wheel too
and fro acting upon cogs inside a flanged pulley, to which is attached a rope, chain or
strap or any other flexible material.
The interior cog wheel is regulated during its rotation by an
metal, from which piece of metal perforations are made of greater area than the
oblong piece of
stud mentioned before, leaving a strip of metal across its centre, which fits and
moves easily too and fro through a slot in the stud which is attached to the
base-plate.
Then from a part of the interior cog wheel-which moves nearest to the base-plate
before mentioned-a portion is cut away across it, to such a depth and width, so as to
allow the before mentioned oblong piece of metal to fit and move easily too & fro,
at or near a right angle to the piece which moves too & fro through the slot in the
stud-before mentioned-thereby producing a double too and fro motion.
And the apparatus described above we claim as our Invention for which we apply
for a Patent.
Dated the 12th day at T
1000
ROBERT CHEW.
HENRY BARMBY.
COMPLETE SPECIFICATION.
Improved Mechanism Applicable for Hoisting, Exerting Pressure or
Tension, or Regulating Motion.
We, ROBERT CHEW and HENRY BARMBY, of 3A North Road, Preston, in the
County of Lancashire, Engineers, do hereby declare the nature of this invention
and in what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement:-
The apparatus or machine is constructed on a base plate of metal. In the centro
of this base plate is a fixed metal stud, the portion of this stud-which is nearest to the
base plate is round, the next portion of the stud is either square, or having two of its
sides or faces flat, and parallel to each other, the remaining portion of the stud is
round.
On that portion of the stud which is round, and is nearest to the base plate, an
annular pulley revolves.
On the next portion of the stud, which is square, or two of its sides flat and parallel,
fits and moves to and fro an oblong plate. This oblong plate has its sides parallel,
from the centre of this oblong plate, and across its width at a right angle to its sides,
in oblong hole is made, with its sides parallel, and as long as the diameter of an
[Price 8d.1

page_text: excentric-described hereafter. This hole is of such a width as to fit and move to
and fro on the parallel faces of the stud.
The next is the front plate, having a handle, at or near its circumference. On
the back of this front plate, and in the center, is a fixed excentric, through this
excentric is a hole of such a size, as to fit and revolve on the remaining portion 5
of the stud.
A cog wheel, smaller in diameter than the annular pulley, to which it is geared.
This cog wheel has a hole in its center of such a size as to fit and move on the
excentric previously described. From the back of this cog wheel-which fits
nearest to the base plate-a part across its center is cut away or recessed, with its
sides parallel corresponding to the thickness and width of the oblong plate
to and fro in this
previously described-which oblong plate fits and moves
recess.
On the end of the stud a washer is firmly secured by a set screw, or any other
means, thus keeping all the parts in their proper position.
On the barrel of the annular pulley is fixed the rope, chain, or any flexible
material.
Another method of regulating and controlling the cog wheel, previously described
-is by having a slot cut into and through the stud-previously described-from the
unattached end, to that portion on which revolves the annular pulley. An oblong
plate with its sides parallel-fits & moves to and fro in the recessed part of the
cog wheel-previously described. From the center of this oblong plate and across
its width an oblong hole is made, leaving a piece or strip of metal in the center of
this hole of such a width, as to fit and move to and fro in the slot of the stud. The
length of this strip to be a little more than the diameter of the excentric-previously
described. The width of the hole-including the strip-greater than the diameter of
the stud.
The fixedness of the pulley is produced as follows:--
When tho power is withdrawn from the handle, the cog wheel is prevented from
revolving on its axis, by the oblong plate moving only to and fro across and in the
recessed part of the cog wheel, whilst the oblong plate is prevented from moving
round the stud, by its parallel sides moving only to and fro on the two parallel faces
of the stud.
DESCRIPTION OF THE DRAWING.
Fig. 1 is a section of the base plate and stud. A is the base plate. BCD is the
stud. B & C. are round. D is square.
Fig. 2 is a section of the base plate and stud. B & C. are round. H is a slot.
Fig. 3 is a section of the barrel. E is a hole which fits on B. fig. 1 & 2. F is where
the cord winds round. G are the cogs. Fig. 5 is a plan of the internal cog wheel,
showing the underside. J is the hole for the cam. I the shaded portion, is cut away
for the slide, Fig. 4 & 8. Fig. 4 is a plan of the slide. K the portions which fits
into the parts cut away at fig. 5 and R fig. 7. Lis the part which fits on D
fig. 1.
Fig. 8 is the slide for the base plate and stud fig. 2.
described. M fits into the slot H fig. 2.
Fig. 6 is a section of fig. 5 across the center.
K fits on fig. 5 as previously
Fig. 7 is a section of fig. 5 at Q. R is where K fig. 4 & 8 fits in.
Fig. 9 is a plan of the back of the front plute. O is the hole which goes on C
fig. 1 & 2.
N is the cam which fits into the hole J fig. 5. P is where the handle is
fixed.
Having now particularly described and ascertained the nature of our said inven
tion, and in what manner the same is to be performed, we declare that what we
claim is.
The arrangement of the part of the machine for producing a double to and fr

page_text: motion of a regulator and controller, which regulator and controller moves on or
through a fixed stud, and in and across a cog wheel, which cog wheel is moved by an
excentric, and is geared with an annular pulley.
Dated this Eighth day of Amil 1800
ROBERT CHEW.
HENRY BARMBY.