US3608486A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drive means for the inking mechanism of a printing machine
Assignee: R Hoe and Co Inc
•
Filing: 1969-04-28
•
Granted: 1971-09-28
•
Expires: 1989-04-28
Abstract
Abstract A mechanism for driving multiunit pumps of an inking mechanism in a printing machine using a signal-sending device to transmit electrical pulse signals, in response to rotation of the press drive shaft, to a motor control circuit, which in turn operates stepping motors to drive an ink pump including remote control means for selectively operating any such unit. An entire pumping unit can be electrically turned on or off to meet various pumping requirements as called for by different operating conditions.
Inventors
- 👤 John J Mcdonald
- 👤 Ralph L Fusco
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:14
CPC Classifications
B; B41; B41F; B41F31/00; B41F31/28
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
259 words
An inking mechanism for a web printing machine comprising an ink pump supported from the frame of said machine having a plurality of page width pump units for supplying ink to the ink rail of an ink motion of said printing machine, each unit being driven by a shaft element, a stepping motor mounted on each of said units for driving said shaft element for operating said pump, a signal-sending device geared to the main drive shaft of the machine for producing electrical pulses in response to the rotational movement of said main drive shaft, means connected to said signal sending device for converting said signals into impulses and transmitting said impulses to said stepping motors so that said stepping motors operate to drive said ink pump units in synchronous relationship to the speed of the press, means connected to said signal converting and transmitting means for selectively operating said stepping motors so that said pump units can be turned on or off by remote control, an electrical power source for operating said motors, and electrical switch means connected between said signal sending device and said stepping motors for automatically interrupting the transmission of impulses to said stepping motors upon the occurrence of a web break and when the machine is running at threading speeds, whereby said stepping motors are instantaneously and automatically silenced so that no ink is pumped by said ink pumps onto the ink motion of said printing machine when no web is threaded through said machine and when said machine is running at threading speeds.
Claim 2
Dependent Claim
259 words
An inking mechanism for a web printing machine comprising an ink pump supported from the frame of said machine having a plurality of page width pump units for supplying ink to the ink rail of an ink motion of said printing machine, each unit being driven by a shaft element, a stepping motor mounted on each of said units for driving said shaft element for operating said pump, a signal-sending device geared to the main drive shaft of the machine for producing electrical pulses in response to the rotational movement of said main drive shaft, means connected to said signal sending device for converting said signals into impulses and transmitting said impulses to said stepping motors so that said stepping motors operate to drive said ink pump units in synchronous relationship to the speed of the press, means connected to said signal converting and transmitting means for selectively operating said stepping motors so that said pump units can be turned on or off by remote control, an electrical power source for operating said motors, and electrical switch means connected between said signal sending device and said stepping motors for automatically interrupting the transmission of impulses to said stepping motors upon the occurrence of a web break and when the machine is running at threading speeds, whereby said stepping motors are instantaneously and automatically silenced so that no ink is pumped by said ink pumps onto the ink motion of said printing machine when no web is threaded through said machine and when said machine is running at threading speeds.
Claim 3
Dependent Claim
180 words
An inking mechanism for a rotary web printing machine comprising an ink pump having a plurality of page width pump units in side-by-side relation for supplying ink to the ink rail of an ink motion of said machine, each said unit including a housing containing individual column width pumping elements, said elements being driven by a train of meshing gears, said train of gears being driven from a drive shaft element, said ink pump being supported from the frame of the printing machine running parallel to said ink rail, a steppIng motor mounted on the housing of each of said units for driving said drive shaft element of each unit so as to operate said pumping elements, means geared to the main drive shaft of the printing machine for producing electrical motor control signals synchronized with the speed of said printing machine, means connected between said signal-producing device and said stepping motors for converting said signals into electrical impulses and for transmitting said impulses to said stepping motors for operating said stepping motors so as to drive said pump units.
Claim 4
Dependent Claim
180 words
An inking mechanism for a rotary web printing machine comprising an ink pump having a plurality of page width pump units in side-by-side relation for supplying ink to the ink rail of an ink motion of said machine, each said unit including a housing containing individual column width pumping elements, said elements being driven by a train of meshing gears, said train of gears being driven from a drive shaft element, said ink pump being supported from the frame of the printing machine running parallel to said ink rail, a steppIng motor mounted on the housing of each of said units for driving said drive shaft element of each unit so as to operate said pumping elements, means geared to the main drive shaft of the printing machine for producing electrical motor control signals synchronized with the speed of said printing machine, means connected between said signal-producing device and said stepping motors for converting said signals into electrical impulses and for transmitting said impulses to said stepping motors for operating said stepping motors so as to drive said pump units.
Claim 5
Dependent Claim
57 words
The inking mechanism according to claim 2, further comprising means connected between said signal producing means and signal converting and transmitting means for automatically and instantaneously preventing the transmission of said impulses to said motors during nonprinting operations of said printing machine so as to prevent the pumping of ink onto said ink rail during said operations.
Claim 6
Dependent Claim
96 words
The inking mechanism according to claim 3, wherein said means for automatically preventing transmission of said impulses to said stepping motors during nonprinting operations comprises a web break detector switch mounted on the printing machine having its contacts closed when said web is threaded through said printing machine and is unbroken, whereby said web break detector switch is opened upon the occurrence of a web break so that no signal will be communicated to said signal converting means thereby preventing the operation of said stepping motors so that no ink is being pumped by said pumps.
Claim 7
Dependent Claim
86 words
The inking mechanism according to claim 4, wherein said means for automatically preventing transmission of said impulses to said stepping motors during nonprinting operations comprises a press drive speed switch mounted on the main drive of said printing machine having its contacts closed only at running speeds of said machine so that no signal will be communicated to said signal converting and transmitting means at speeds below running speeds thereby preventing operation of said stepping motors so that no ink is being pumped by said pumps.
Claim 8
Dependent Claim
22 words
The inking mechanism according to claim 5, wherein said speeds below running speeds are all speeds up to 100 feet per minute.
Claim 9
Dependent Claim
15 words
The inking mechanism according to claim 2, wherein said signal-producing means comprises a pulse generator.
Claim 10
Dependent Claim
21 words
The inking mechanism according to claim 2, wherein said signal-producing means produces pulses having a general configuration of a sinusoidal wave.
Claim 11
Dependent Claim
55 words
The inking mechanism according to claim 8, wherein said signal converting means comprises a wave converter circuit for converting said sinusoidal waves into square wave impulses and a motor control circuit connected between said wave converter and said stepping motors for transmitting said impulses to said stepping motors so as to operate said stepping motors.
Claim 12
Dependent Claim
39 words
The inking mechanism according to claim 9, wherein said gear ratio between said signal sending means and said main drive shaft is 4:1 so that said signal-sending means operates at one-quarter the rotational speed of said main drive shaft.
Claim 13
Dependent Claim
37 words
The inking mechanism according to claim 9, further comprising remote control means hooked into said motor control circuit, said means comprising a control switch for each said stepping motor so as to selectively operate each said motor.
Claim 14
Dependent Claim
21 words
The inking mechanism according to claim 11, wherein said control switch has a position for operating said motors at priming speeds.
Claim 15
Dependent Claim
52 words
The inking mechanism according to claim 12, further comprising a selector switch connected between said electrical power source and said motor control circuit whereby the source of electric power for operating said stepping motors can be disconnected so that the entire ink pump of said printing machine can be remotely turned off.
References Cited (Backward Citations)
US1922885A
Cited
US2497648A
Cited
US2622523A
Cited
US2821919A
Cited
US2838996A
Cited
US2965023A
Cited
US3063369A
Cited
US3134325A
Cited
US3366051A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |