Improvement in Pneumatic Machines for Distributing Solid or Liquid Substances Over the Surface of Land.
Year: 1889

page_text: Date of Application, 18th July, 1889
Complete Specification Left, 31st Mar., 1890-Accepted, 17th May, 1890
PROVISIONAL SPECIFICATION.
Improvement in Pneumatic Machines for Distributing Solid or
Liquid Substances Over the Surface of Land.
I GEORGE FREDERICK STRAWSON of Newbury in the County of Borks, Chemical
Manure Manufacturer do hereby declare the nature of my invention to be as follows :-
The object of this invention is to provide a means whereby the air blast issuing.
from the delivery nozzle of Pneumatic Machines for distributing solid and liquid
substances over lands or crops is maintained at a constant pressure if the horse or other
animal working the same should increase its speed.
It has been found that if the horse or other animal drawing such a pneumatic
machine varies its speed from that normally suited to the machine the distribution is
uneven the material being spread thinner as the speed increases owing to increase of
pressure of the air blast and vice-versa. To overcome this difficulty I provide on the
delivery pipe between the fan or other blower and the delivory nozzle à flap or other
suitable valve closed by a spring or other device the pressure of which spring on the
valve may be altered to suit the work being done or the pace of the draught animal
by means of a scrow or other suitable means. When the draught animal goes too
fast the increased speed of the blower or fan causes the pressure of the air in the
delivery pipe to rise, and, overcoming the pressure of the spring opons the valvo, and
allows a portion of the air to escape, thus maintaining the prossure of air issuing from
the delivery nozzle constant.
Dated this 18th low of Tu.. 1000
ERNEST
SALAMAN,
65/66, Chancery Lane, London, Agent for Applicant.
COMPLETE SPECIFICATION.
Improvement in Pneumatic Machines for Distributing Solid or
Liquid Substances Over the Surface of Land.
I GEORGE FREDERICK STRAWSON of Newbury in the County of Borks Chemical
Manure Manufacturer 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 :-
1
The object of this Invention is to provide a means whereby the air blast issuing
from the delivery nozzle of Pneumatic Machines for distributing solid or liquid
substances over land or crops is maintained at a constant pressure if the horse or
other animal working the same should increase its speed.
It has been found that if the horse or other animal drawing such a Pneumatic
Machine varies its speed from that normally suited to the machine the distribution is
uneven the material being spread thinner as the speed increases owing to the increase
of pressure of the air blast and vice versa.
To overcome this difficulty I provide on the delivery pipe between the fan or other
blower and the delivery nozzle a flap or other suitable valve closed by a spring or
other device the pressure of which spring on the valve may be altered to suit the
work being done or the pace of the draught animal by means of a screw or other
suitable means.
When the draught animal goes too fast the increased speed of the blower or fan
causes the pressure in the delivery pipe to rise and overcoming the pressure of the
spring opens tho valve and allows a portion of the air to escape thus maintaining the
pressure of air issuing from the delivery nozzle constant.

page_text: And in order that my said Invention may be the botter understood I will proceed
to explain the same with reference to the accompanying sheet of drawings in which
Fig. 1 shows side elovation of a valve for equalising the prossure in the air pipo
such valve being constructed according to this invention.
Fig. 2 is end elevation of same.
Fig. 3 plan of same.
Fig. 4 section of same.
3
Samo lotters denote same parts in all the Figures.
a is the air pipe having a soating thereon on this seating fits the valvo c the
pressure of the spring d keeps the valve c closed which pressure may be increased
by screwing down the adjusting screw for vice versa g is a standard for supporting
the screw and fastened to the air pipo a by means of the clip h.
I prefer to cast the seating on the air pipe a as a point is thereby saved but the
seating may be made separately and attached to the air pipe by any suitable means
such as screws or studs.
The valvo e 1 construct of metal or other suitable material and face the same with
leather or indiarubber to make it fit the seat air-tight.
Having now particularly described and ascertained the nature of my said Inven-
tion and in what manner the same is to be performed I declare that what I
claim is:
In a Pneumatic Machine for distributing solid or liquid substances over the
surface of land or crops the use of a flap or other suitable valve closed by a spring or
other suitable device substantially as and for the purpose specified.
Dated the 31st day of March 1890.
ERNEST SALAMAN,
Agent for the Applicant.