Improvements in Starting, Regulating, and Stopping Mechanism for Printing Machinery.
Year: 1893

page_text: Date of Application, 15th June, 1893
Complete Specification Left, 15th Mar., 1894--Accepted, 28th Apr., 1894
PROVISIONAL SPECIFICATION.
Improvements in Starting, Regulating, and Stopping Mechanism for
Printing Machinery.
I, WILLIAM HAMILTON BLAKENEY, of Edengrove, Arbroath Road, Dundee,
in the County of Forfar, N.B. Mechanical and Electrical Engineer, do hereby
declare the nature of this invention to be as follows:-
My invention relates to starting, regulating and stopping mechanism for printing
machinery, the object being to have the action of such machinery under instant and
effective control, and that from any suitable station or stations.
I propose to operate the controlling mechanism by means of any suitable fluid
such as air, either artificially compressed or in combination with vacuous chambers,
or a combination of both, by steam, oil, water, from a pressure main or from an
accumulator, or water in combination with a non freezing mixture, or even ณ
combination of two or more known fluids.
In carrying my invention into effect under one modification as adapted for use
with compressed air, may employ a single acting oscillating air pump, actuated in
any known way. The design and disposition of the valves are novel, the valve
controlling communication between the pump and the reservoir being designed to
give maximum area, and minimum lift and clearance. The inlet valve is con-
structed to automatically open when the air in the reservoir attains a given
pressure, in order that the atmospheric air may flow freely in and out of the
cylinder as long as such pressure obtains, thus preventing an unnecessary
accumulation of compressed air in the reservoir.
The striking gear and the brake of the machine-if such brake be used--is
operated by a cylinder whose piston is in the one direction actuated by air pressure
from the aforesaid reservoir; its return being due to a spring acting on the piston
or on its rod, on the reduction of the aforesaid air pressure. Instead of, or in
addition to a spring, air pressure may be employed to actuate such piston in either
direction. The piston rod is coupled to such gear by a coupling rod, so constructed
as to allow of the striking gear being actuated by hand at any time, should the
auxiliary gear become deranged. If two of these cylinders are used, one to actuate
the striking and the other the brake gear, they are designed to apply the brake
after the striking gear has operated and to take such brake gear off before the
machine is started. The compressed air is conducted to various stations about the-
machine by pipes, and cocks or valves of special design at such stations control
the flow of the compressed air from the reservoirs to the cylinder previously
referred to, and its exit therefrom as may be found necessary.
Dated this 13th day of June 1893.
GEO. C. DOUGLAS & Co.,
41, Reform Street, Dundee, Agents for Applicant.

page_text: COMPLETE SPECIFICATION.
Improvements in Starting, Regulating, and Stopping Mechanism for
Printing Machinery.
I, WILLIAM HAMILTON BLAKENEY, sometime of Edengrove, Arbroath Road,
Dundee, in the County of Forfar, N.B. but now of 17" Great George Street,
Westminster, S. W. London, in the County of Middlesex, Great Britain, Mechanical
and Electrical Engineer, 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 :-
My invention relates to starting, regulating and stopping mechanism for printing
machinery, the object being to have the action of such machinery under instant and
effective control, and that from any suitable station or stations.
I propose to operate the controlling mechanism by means of any suitable fluid
such as air, either artificially compressed, or in combination with vacuous chambers,
or a combination of both, by steam, oil or water, from a pressure main, or from an
accumulator, or water in combination with a non-freezing mixture, or even a
combination of two or more known fluids.
In order that my invention may be properly understood and readily carried into
effect, I have hereunto appended five explanatory sheets of drawings in the several
figures of which corresponding parts are marked with the same numerals of
reference.
Figure 1. (Sheet 1.) is a side elevation of a printing machine, showing how my
invention may be carried into effect, under one modification as adapted for use
with compressed air.
Figures 2. 3. and 4. (Sheet 2.) illustrate respectively a side elevation in part
section; a plan; and a view looking in the direction of the arrow A. (Figures 2.
and 3.) of the air compressor.
Figures 5. 6. and 7. (Sheets 3. and 4.) respectively illustrate a section at B. B.
looking in the direction of the arrow C. (Figure 6.); a plan of the striking gear
and cylinder and an end elevation looking in the direction of the arrow K.
(Figure 5.).
Figures 8. and 9. (Sheet 5.) respectively illustrate on an enlarged scale a section
at D. D. (Figure 9.) and a view looking in the direction of the arrow E. (Figure 8.)
of the equilibrium valve of the air compressor.
Figures 10. 11. 12. and 13. (Sheet 5.) respectively illustrate, on an enlarged
scale, a side elevation looking in the direction of the arrow F. (Figure 11.); a
plan;
a section at G. G. (Figure 13.); and a section at H. H. (Figure 12.) of the
three way cock.
In carrying my invention into effect under one modification, as adapted for use
with compressed air, I preferably employ a single acting air pump 20, actuated in
any known way. In the drawings I have shewn it actuated by a belt.
The design
and disposition of the valves are novel, the valve 21. controlling communication
between the pump and the reservoir 22. being designed to give maximum area, and
minimum lift and clearance. The inlet valve 23. is constructed to automatically
open when the air in the reservoir attains a given pressure, in order that the
(atmospheric) air may flow freely in and out of the cylinder 24. as long as such
pressure obtains, thus preventing an unnecessary accumulation of compressed air in
the reservoir.
The striking gear 25. and the brake of the machine is operated by a cylinder 26.
whose piston 27. is, in the one direction actuated by air pressure from the aforesaid
reservoir 22; its return being due to a spring 28. acting on the piston 27. or on
its rod 29, on the reduction of the aforesaid air pressure. Instead of, or in addition
to a spring, air pressure may be employed to actuate such piston in either direction.

page_text: The piston rod 29. is coupled to such gear 25. by a coupling rod 30. so constructed
as to allow of the striking gear being actuated by hand at any time, should the
auxiliary gear become deranged. If two of these cylinders are used as I have.
shewn in the drawings-one 26. to actuate the striking and the other 43. the brake
gear, they are designed to apply the brake after the striking gear has operated
and to take such brake off before the machine is started. The compressed air is
conducted to various stations 31. about the machine by pipes 32, and cocks or
valves 33. of special design, which at such stations control the flow of the
compressed air from the reservoir to the cylinder previously referred to and its.
exit therefrom as may be found necessary.
The mechanism operates in the following manner:-The reservoir 22. is filled
with compressed air by means of the pump 20. which is kept in constant motion,.
preferably independently of the machine. When the air in the reservoir reaches
a given maximum pressure, it causes the valve 34. to open and let atmospheric air
into the cylinder of the pump. This is done by adjusting the pressure of the-
spring 35. by means of the screwed nut 36, in such a manner that the piston 37.
will be depressed by air pressure from the reservoir when such maximum pressure
is attained. Ordinarily when the pressure of the air in the cylinder 24. is reduced
below that of the atmosphere, due to the valve 34. not opening and the contained
residual air in the cylinder expanding on the return stroke of the piston; the said
valve only opens to admit air into the cylinder and again closes while that air is
being forced into the reservoir in the known way. Should the valve 34. be applied
at the bottom of the cylinder it is obvious that the spring 44. will not be required
as its purpose is merely to keep the valve 34. shut when the air pressure is about
equal on both sides.
In Figures 5. and 6. the striking gear is shown in the position at which the
machine is when in motion, the belt 38. being upon the driving pulley 39. and the
cocks 33. closed by means of the tensional equilibrium springs 45. whose other
extremities are not shewn in the drawings but which should be attached to any
suitable fixed point or points on the machine; as shewn in Figures 10. to 13.
To start the machine, the handle 40. of any one of the cocks 33. is turned in
the direction of the arrow J. until communication is established between the-
pipe 41. and the atmosphere by means of the channel 42. in this manner reducing
the air pressure within the cylinder 26. and allowing the spring 28. to move back
the piston 27. to its previous position and the belt back to its fast pulley.
To stop the machine, the handle 40. of any one of the cocks 33. is turned in
the direction of the arrow I. until the pipe 32. from the reservoir, is in com--
munication with the pipe 41. to the cylinder 26. in this manner moving the piston 27.
along such cylinder against the resistance of the spring 28. and so moving the
belt 38. from the fast to the loose pulley.
The piston 46. of the brake cylinder 43. is actuated by the air within the.
cylinder 26, which passes through the pipe 47. after the piston 27. passes the
aperture 48. and thus the brake strap 49. is tightened when the lever 50. is moved..
In some cases I may actuate such lever by means of the wedge 51. instead of by
the before mentioned brake cylinder.
I wish it to be particularly understood that I do not limit myself to the precise
details of construction herein before described and illustrated by the annexed
drawings, but that I hold myself free to make such changes and alterations as
conform with the disposition and scope of my invention.
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 :-
:-
(1) The mode of operating, starting and stopping mechanism for web printing
machinery by means of any suitable fluid-gas or liquid-such as air, steam, oil or
water substantially as described

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(2) The hereinbefore described combination of parts for starting and stopping
web printing machinery, as herein before described and illustrated in the annexed
drawings.
(3) The combination with a web printing machine or machines, of an air
compressor substantially as illustrated and for the purposes as set forth.
(4) The combination with a web printing machine of the cylinder 26, piston 27,
rod 29, spring 28, and striking gear 25, substantially as illustrated and described.
(3) The combination with a web printing machine of the cylinder 26, piston 27,
rod 29, spring 28, striking gear 25, cylinder 43, piston and rod 46, lever 50, and
strap 49, substantially as illustrated and described.
(6) The combination with a web printing machine of the cylinder 26, piston 27,
rod 29, spring 28, striking gear 25, wedge 51, lever 50, and strap 49, substantially
as illustrated and described.
(7) The combination with a web printing machine of the valve or cock 33,
substantially as illustrated and described.
Dated this 3rd dow of March 1894
GEO. C. DOUGLAS & Co.,
Agents for Applicant.