US833018A

US833018A - Printing-press.

Info

Publication number: US833018A
Application number: US28713005A
Authority: US
Inventors: Thomas Walter Barber
Original assignee: Individual
Current assignee: Individual
Priority date: 1905-11-13
Filing date: 1905-11-13
Publication date: 1906-10-09
Anticipated expiration: 1923-10-09

Description

PATENTED 0019,1006.

T. W. BARBER. PRINTING PRESS.

APPLIUATION FILED NOV. 13, 1905.

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Flt/077W J44 Ba b by A5150 rrce/ No. 833,018. PATENTED OCT. 9, 1906.

T. W. BARBER.

PRINTING PRESS. APPLICATION FILED NOV. 13, 1905.

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PATENTED 0019, 1906.

T. W. BARBER. PRINTING PRESS. APPLIOATION PILED NOV. 13, 1905.

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Wlifimesses.

PATENTED OCT. 9, 1906.

' T. w. BARBER.

PRINTING PRESS.

APPLIUATION FILED NOV. 13, 1905.

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.To all whom. it may concern; I

Be it known that -.'I, TnoMAs WALTER- THOMAS WALTER BARBER. or LONDON, ENGLAND.

PRINTING-PRESS.

Specification of Letters Patent,

Patented Oct. 9, 1906,

Application filed November 18, 1905. Serial F0. 287,180..

' BARBER, a subject of the Kin of England,

such accidental stoppage and to provide anresiding at Westminstr,-Lon on, En land, have invented certain new and usefu Improvements in Printing-Presses, of which the following is a specification. g

This invention relates to improvements in printingl-presses, and is particularlapplicable. to t e type of apparatus descri ed in my previous United States patent, 'No. 7 95,785.

In apparatus of that type the valves of the driving-motor are operatedautomatically at or near the ends of thelstrok e by theengagement of an operating-lever with fixed stops. It is found that when: the motor is driven very slowly (say for cleaning purposes) the momentum of the carria e may not be sufli cient to bring about comp ete operation of the valves, so that the motor is brought to rest. The objects of this invention are to avoid the carriage-motor.

According to this invention an auxiliary motor actuated by the exhaust .from the main carriage-motor is employed to insure the operation of the valves. This auxiliary valve-motor may comprise a double-acting cylinder communicating with the exhaust valves of the main carriage-motor, and the efiicient means for operating the valves of mechanically-operated inlet and exhaust be broughtinto the path of valves ofthe main carria e-motor are operatively connectedsay by inkswith the piston of the auxiliary valve-motor. A

To set the auxiliaryvalve-motor in operation when the carria e reaches or approaches either end of the strfire, a pilot-valve may be mechanically opened to admit a portion of the. exhaust fluld from the carriagemotor to one end of the valve-motor. For this purpose the exhaust-valves may be of the rotary type comprising two concentric sleeves with suitable orifices, one of the sleeves being automatically rotated by the movement of the can'iage-say by a projecting arm and fixed stop-andthe othersleeve being rotated by the valve-motor. In order to vary the stroke of the carriagemotor, stops may be arranged at different points in'the length of the press and may be carried on concentric spindles having handles attached thereto, so that any J the valve-operatm arm.

, the accompanying drawings, Figure 1 is one stop may a longitudinal section of a portion of a rinting-press constructed in accordance wit this invention. Fi 1 is a continuation of Fig. 1, showing the le -hand end or remaining portion of the press. Fig. 2 is a side elevation of the valves and valve-operating gear alone, partly in section; and Fig. 3 is an end elevation ofv the press, partly in section.

Like letters indicate like parts throughout the drawings.

The carriage A is 'mounted to reciprocate on the frame B. The double-acting fluidpressure cylinder C is attached to the under side of the carriage and provided with a piston D and piston-rods D, attached to the frame B of'the press. At each end of the prises a slotted sleeve F, rotatable in the valve-chest. A short crank or arm F is attached to the sleeve, and the movement of the crank or arm brings the slot in the sleeve F opposite or away from the cylinder-port F Each exhaust-valve E comprises two concentric sleeves K and L, rotatable in the valve-chest. The outer sleeve K has a nar row slot K and a wide slot K Within this is an inner sleeve L, having one slot L constituting the pilot-valve. The outer sleeve K carries a lever K and the inner sleeve has a short arm L Normally the narrow slot .K is opposite the outlet and the slot L does not colncide therewith.

The exhaust valves E communlcate, through conduits H, with the two ends of a small auxiliary cylinder J, supported by the main cylinder 0. The cylinder J has an exhaust-outlet J midway of its length. Within the cylinder is a piston J having a pistonrod J at each side. When exhaust-gas from the cylinder 0 enters the auxiliary cyhnder J at either end, the piston J 2 is suddenly blownover to the 0p osite end. When the piston J 2 has passed the exhaust-outlet J, 1t completes its stroke, owing to the momentum of the moving parts and to the fact that the whole exhaust irom the cylinder C is being discharged through the aux liary cylinder J behind the piston J and the exhaust- .outlet J is made sufficiently small to maintain pressure behind the piston J z momentarily after it has passed the exhaust-outlet J.

Each piston-rod J is connected by a link J to the lower end of one lever K and the other end of the lever K is connected by a rod M with the inlet-valve crank or arm F at the opposite end of the "cylinder, so that the movement of the piston J 2 shifts both the exhaust-valve sleeves K and the inlet-valve sleeves F, The crank or arm F may be slotted at F, so that the opening of the inletvalve does not take place until the corresponding exhaust-valve is closed. I V

Mounted on the frame of the press B is a support N, carrying three stops 0 P Q on three concentric rotatable spindles O P Q, having handles 0 P Q attached thereto. By turning any one of these handles through a-right angle the corresponding stop can be brought into the path of the short arm L of the exhaust-valve at that end of the cylinder, so as to turn the sleeve L The sleeves L being embraced by the sleeves K and frictionally engaging therewith are turned when the sleeves K turn. The limiting closed position of the sleeve L is shown on the left hand in Fig. 2, and the limitin open position-of the sleeve L is shown on t e right in Fig. 2. The sleeve L cannot move beyond its limitingositions.

' T e operation of the apparatus is as follows: One of the stops 0 P Q having been turned into the path of the arm L at each end of the press, according to the length of stroke required, fluid is admitted to one end of the cylinder, which commences tomove. As it a proaches the end of its stroke, say the efthand end, the arm L strikes the stop and is shifted over so as to bring the slot-L opposite the slot K, thus opening the pilot-valve and (permitting a cer- ,.tain uantityof exhaust fiui 'topassfromthe cylin er C, through the conduit H, to the cylinder J. The piston J is thus blown over to the other end of the cylinder J e., to the rightand the levers K are moved by t to the right. The sleeve K '(onthe left) 1s ,thus turned to bring the wide slot K opposite the slot L", and the exhaust-valve is then fully open. At the same time the other exhaust-valve (on the right) is closed, the upper end of the lever K (on the left) ulls t e rod M, and when the latter reaches t e end of the slot F it opens the inlet-valve F at the other end of the cylinder (on the right) and the inlet-valve, (on the left,) which has been 0 ened, is closed. Thus during the whole or t e early part of each stroke the inlet-valve F is opened to the acting end of the cylinder C, while the idle end of the cylinder 0 is opened to exhaust through the conduit H and the outlet J.

This invention has been described in its application to the particularprinting-press forming the subject of my previous patent above mentioned, but it is equally applicable to any other form of printing press in whichthe 'valves of the carriage-motor are operated by the movement of the carriage itself.

It is to be understood that the details of construction and arrangement may be varied without de artin from this invention. For example, s ide-va ves or drop-valves may be used in place of the rotary valves shown. Also the exhaust-valves instead of having two operating-levers may have one operating lever, which at low speeds may be moved slightly by the stop to open the valve to a certain extent, when the auxiliary motor will be brought into play to complete the movement.

What I claim as my invention, and desire to secure by Letters Patent, is

1. In a printing-press the combination of a reciprocating carriage, a double-acting fluidpressure motor operatively connected there with and having inlet and exhaust valves, an auxiliary motor actuated by the exhaust from the carriagemotor and operatively connected with the inlet. and exhaust valves to insure their movement and means actuated by the, movement of the carriage for admitting exhaust to the auxiliary motor.

2. In a printing-press the combination of a reciprocating carriage, a double-acting fluid-pressure motor operatively connected therewith and having an inlet and an exhaust Valve at each end, an auxiliary motor communicating at its ends respectively with the two exhaust-valves, means actuated by the movement of the carriage for admitting a fraction of the exhaust from the carriagemotor to the auxiliary motor, and operative connections between the auxiliary motor and the main exhaust and inlet valves to insure their movement.

3: The combination with a printing-press of a reciprocating carriage, a double-acting fluid-pressure motor operatively connected therewith, an inlet-valve and an exhaustvalve at each end of said motor, an auxiliary motor communicating at its ends respectively with the two exhaust-valves, each exhaustvalve comprising two operative parts constituting a pilot exhaust-valve-and a main exhaust-valve, means for operating the pilotvalve by the movement of the carriage, and operative connections between the auxiliary motor and the main exhaust-valves and inlet-valves to insure their movement.

4. The combination with a printing-press of a reciprocating carriage, a double-acting fluid-pressure motor operatively connected therewith, an inlet-valve and an exhaustvalve at each end of said motor, an auxiliary motor communicating at its ends respectively with the two exhaust-valves, each exhaust? valve comprising two operative parts constituting a pilot exhaust-valve and a main exhaust-valve, means for operating the pilotvalve by the movement of the carriage, means for varying the pointin the movement of the carriage at which each pilotvalve is operated, and operative connections between the auxiliary motor and the main exhaust-valves and inlet-valves to insure their movement.

5. In a printing-press the combination of a press-frame, a carriage mounted to reciprocate thereon, a main fluid-pressure cylinder secured to said carriage, a piston in the cylinder connected to the press-frame, an inlet--valve and an exhaust-valve at each end of said cylinder, a double-acting auxiliary cylinder secured to the main cylinder, a piston in that auxiliary cylinder, a central outlet from that cylinder, a conduit from each exhaust-valve to one end of the auxiliary cylinder. and operative connections between the piston and the auxiliary cylinder and the main inlet and exhaust valves.

6. In a printing-press the combination of a press-frame, a carriage mounted to reciproc ate thereon, a main fluid-pressure cylinder connected to said carriage, a piston in the cylinder connected to the press-frame, a rotary inlet-valve at each end of said cylinder, a rotary exhaust-valve at eachend of said cylinder, a valve-operating lever operatively connected with each exhaust-valve and the inlet-valve at the opposite end, a double-acting auxiliary cylinder secured to the main cylinder, a piston and piston-rods in that cylinder, a central outlet from that cylinder, a conduit froln'each main exhaust-valve to one end of the auxiliary cylinder, and alink connecting each nmin-valve-operating lever with the auxiliary piston-rod.

7. In a printing-press the combination of a press-frame, a carriage mounted to reciprocate thereon, a main fluid-pressure cylinder connected to said carriage, apiston in the cylinder connected t-othe press-frame. a rotary inlet-valve at each end of said cylinder, a crank attached to said valve, a rotary exhaust-valve at each end of said cylinder, comprising an outer sleeve having a wide slot and a narrow slot, an inner concentric sleeve having one Wide slot constituting with the outer narrow slot a pilot-valve, a projecting arm attached to each inner sleeve, a valve-operating lever attached to each out er sleeve, a link connecting the inlet-valve crank at each end with the operating-lever at theother end, a double-acting auxiliary cylinder secured to the main cylinder, at pisr ton and piston-rods in that cylinder, a central outlet from that cylinder, a conduit from each main exhaust-valve to one end of the auxiliary cylinder, a link connecting each main-valve-operating lever with the auxiliary piston-rod and a plurality of fixed stops arranged in the path of the arm projecting from the inner exhaust-valve sleeve.

8. In a printing-press the combination with a press-frame, a carriage mounted to reciprocatethereon, a main fluid-pressure cylinder connected to said carriage, a piston in the cylinder connectedto the press-frame, a

rotary inlet-valve at each end of said cylin- I der, a crank attached to said valve, a rotary exhaust-valve at each end of said cylinder, comprising an outer sleeve having a wide slot and a narrow slot, an inner concentric sleeve having one Wide slot constituting with the outer narrow slot a pilot-valve, a projecting arm attached to each inner sleeve, a valve-operating lever attached to each outer sleeve, a link connecting the inlet-valve crank at each end with the operating-lever at the other end, a double-acting auxiliary cylinder secured ,to the main cylinder, a PIS? ton and piston-rods in that cylinder, a central outlet from that cylinder, a conduit from each main exhaust-valve to one end of the auxiliary cylinder, a link connecting each main-valve-operating lever with the auxiliary piston-rod, a plurality of stops disposed at different points in the length of the press and arranged to be brought into the path of the arms projecting from the inner exhaust-valve sleeves, concentric rotatable spindles mounted on the press-frame and carrying said stops and handles on said spindles.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

THOMAS WALTER BARBER.