US562898A - jofeh - Google Patents

Description

2 Sheets-Sheet 1.

(No'Model.)

J. J OPEH. MACHINE IoN PRINTING PROM SINNGILS.

Patented June 30, 1896.

QON

INVENTOR ILM/Jam MHTNESSESy Efe,

2 Sheets-Sheet 2.

(No Model.)

J. J OPBH.'

MACHINE PUR'PRINTING FROM STENGILS.

Patented Jun@ 3o, 1896.

INVENTOR.

WITNESSES- stroke, and also of a device for insuring the UNITED STATES PATENT OEEicE.

JOHN JOFEH, OF LONDON, ENGLAND.

MACHINE FOR PRlNTl NG FROM STENCILS.

SPECIFICATION forming part of Letters Patent No. 562,898, dated J' une 30, 1896.

Application filed February 24, 1896. Serial No. 580,555. (No model.) Patented in England April 6, 1895, No. 7,092.

To all whom t may concern;

Be it known that I, JOHN JoEEH, a subject of the Queen of Great Brit-ain, residing at Ohingford, London, in the county of Essex, England, have invented a new and useful Machine for Printing from Stencils, (for which l have obtained Letters Patent in Great Britain, No. 7,092, bearing date the 6th day of April, 1895,) of which the following is a full and complete speciiication.

My invention relates to improvements in machines for printing from stencils, and the object of my invention is to produce a niachine which is simple and inexpensive to construct and which will produce copies in a more rapid and reliable manner than those heretofore constructed.

My machine consists of a suitable frame in which slides a carriage to which is pivoted at its lower end the frame carrying the stencil, of a web attached to the lower end of the reciprocating carriage for carrying the sheets of paper and keeping them in contact with the back of the stencil during the downstroke of the frame carrying it. This web also provides a means of lifting the reciprocating carriage.

My invention also consists of devices for separating both the web and the inking-roller from the stencil during its non printing sheet of paper leavingthe web at the end of the printing-stroke of the stencil-frame.

In the accompanying drawings,which illus? trate my invention, and which form part of this specification, Figure l, Sheet No. l, is a view in side elevation. Fig. 2, Sheet No. l, is a view in front elevation. Figs. 3, 4, and 5, Sheet No. l, are broken views, on an enlarged scale, showing the device for holding the frame carrying the stencil in a forward position during its up or non-printing stroke. Fig. 6, Sheet No. 2, isa broken view, on an enlarged scale, showing the device for holding the hiking-roller clear of the stencil duringthe non-printing movement of the carriage carrying the stencil. Fig. 7, Sheet No. 2, is

a similar view showing the inking-roller in contact with the stencil during the printing movement thereof; and Fig. 8, Sheet No. 2, is a broken view, on an enlarged scale, showing a modification of the said device.

Throughout the views similar parts are marked with like letters of reference.

The stencil-sheet is carried in a suitable frame A, hinged at its lower side in a carriage-frame B, adapted to slide in guides c c, formed on or iiXed to the main frame O, the said guides being arranged slightly out of the vertical, so that the stencil-frame A lies by its own weight back in the carriage B, to which it is pivoted at o.. n

The carriageB is adapted to fall by its own weight and to be lifted by hand through the medium of a web D, attached to its lower end, either directly or indirectly, and passing firstover an impression-roller E, carried by the main frame C, and then over a roller E', carried by an auxiliary frame O', pivoted or otherwise attached to the main frame C in close proximity to the rear face of the carriage B.v The web D is of a width equal to the width of the frame A, and it is adapted to receive and carry the sheets of'paper to be printed 'on in contact with the back of the stencil. The frame C' is fixed in its position for use by means of a strut, such as c. As a modification a spring-roller may be substituted for the rear roller E', and the free end of the web D be attached thereto, so that the carriage B would be lifted by its action, in which case the said carriage would be depressed by the pressure of the hand of the operator.

During the down or printing stroke of the carriage B, the rear face of the stencil-frame A--and therefore of the stencil it carries-is in contact with the web D over the impression-roller E, but as the frame reaches the bottoni of its stroke the stencil-frame is rocked forward on its pivot a by a cam-piece b, formed or mounted on the stencil-frame A, coming into contact with the roller E or with some convenient part of the main frame O, and it is held in its forward position with respect to the carriage B during the up or nonprinting stroke by means of a spring-iinger F, pivoted on the carriage B and engaging with a pin or stud b on the stencil-frame A, the said finger being released automatically when the carriage B has reached the top of its stroke by reason of its curved end f coming into engagement with a projection c2 on the .frame C.

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reaches the bottom of its stroke the frame G,

carrying the roller II, is rocked on its pivot, to remove the said roller from the face of'the stencil, through the medium of a rearwardlyextending arm G2 anda chain K, or other suitable flexible connection attached to the lower-end of the carriage B, The inkingroller II is prevented fromcoming back into contact with the stencil as the stencil-frame A rises by means of a catch L, pivoted to the main frame A and adapted to engage with a pin or roller l, mounted on the frame G, the,`

said catch being disengaged as the carriage B commences its downward strokeby reason of the engagement with it of a hook m., pivoted to the carriage B, and kept in a position to en gage with the said catch L by means of 1 a balance-Weight m' or its equivalent.

As. a modification the catch L may be disengaged as the sliding frame reaches the topy of its stroke, in which case` a finger M is substituted for the hook` m, as. shown by Fig. 6.

The paper to. be printed on is laid on the web D and isY carried in between the rear face of the stencil and theimpression-roller E by the travel of the said web, an d it dropsI out automatically when the sliding carriage reaches To insure that the` sheet of paper that has been printed on fallsl away from the web when the carriage B the' bottom of its stroke.

reaches the bottom of its stroke, the said web is flicked by. means o f an arm. N, formed on the main frame" andV adapted to be rocked on its hinge by the carriage` B coming into contact with the other end 'a of the said bell-v cranh lever as thesaid frame reaches the bottoml of its stroke.

Although I have described my machineas it may with equal effect be adapted toV print on the` upstroke thereof, though theY sheets could not be printed so rapidly with a machine so arranged, It will be obvious also that the machine may be operated by power instead of by hand.

I am aware that reciprocating machines for printing from stencils have already beenused,

andI do not, therefore, broadly claim such as ing-roller, of animpression-roller, and of a web adapted to carry the sheets of paper and operate the reciprocating frame, all as and for the purpose set forth.

2. In a machine for printing from stencils. in combination, a reciprocating carriage to which is pivoted the frame carrying the stencil, an impression roller adapted to bear against the rear face of the stencil, an inkingroller adapted to beai1 against front face of the stencil, and of a web attached to the lower side of the reciprocating carriage and adapted `to carry the sheets of paper and to operate the reciprocating frame.

3. In a machine for printing from stencils, in combination, a frame for carrying the stencil-sheet, a reciprocating carriage to which ythe frame carrying the stencil-sheet is pivoted, an inhingroller located on the one side `of the stencil-sheet, an impression-roller located on the other side.4 of the stencil-sheet, a Aweb for lifting the, carriage, the device for separating the frame carrying the stencilsheet from the web during its non-printing movement, and the devicefor separating the inking-roller from the stencil-sheet during its non-printing movement.`

et. In a machine for printrngffrom stencils,

I in combination, .a frame for carrying the stencil-sheet, a reciprocating carriageto which the frame carrying lthe stencil-sheetispivoted, an inking-roller located on the one side of the stencil-sheet, an in ipression-roller located on 1 the other side. of the stencil-sheet, a web for vlifting the carriage, the device for separating the frame` carrying the stencil-sheet from lthe Web during its,v non-printing movement,

the device vfor separating the, inking-roller from thestencil-sheet during its non-printing movement, and the device for iching. the web to insure the sheets of paper falling away from it as the carriage reaches the end of its printiin@` movement. oneend or" a bell-crank lever N', pivoied to C 5. In a machine for printing from stencils,

i the coinbination with the main frame C, of the reciprocating carriage B carrying the stencillframe A, of the4 auxiliary frame C carrying specified. printing on the downstroke of the stencil yet` 6. In a machine for printing from stencils,

' the combination with theframe C of the reciprocatingk carriage B, of the stencil-frame A pivoted at o, to the carriage B and having a cam-piece Z2 and of the. impression-.roller E carriedy bythe framey C, all asand for the purpose. specified.

7. In amachine for printingfrOm stencils, the combination of thereciprocating carriage fB, of the, stencil-frame A pivoted at a to the carriage B.r and, having a cam-,piece b, and of j" curved; to engagewith the projection c2 on the main frame C, all as andfor the purpose specified.

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S. In a machine for printing from stencils, the combination of the main frame C, of the sliding lcarriage B to which is pivoted the frame A carrying the stencil, of the frame G pivoted to the main frame C and carrying the inkin g-rollers H and J, of the arm G2 forming part of the frame G, and of the flexible connection K between the end oi' the arm G2 and the bottom side of the carriage B, all as and for the purpose specied.

9. In a machine for printing from stencils, the combination of the Amain frame C, of the sliding carriage B to which is pivoted the frame A carrying the stencil, of the frame G pivoted to the main frame C and carrying the linking-rollers H and J, of the arm G2 forming part of the frame G, of the iexibie connection K between the end ofv the arm G2 and the bottom side of the carriage B, of the catch L pivoted to the main frame C and adapted to en gage with the pin or roller Z on the frame G, and of the hook or inger m pivoted to the bottom of the carriage B, all as and for the purpose specified.

l0. In a' machine for printing from stencils, the combination of a reciprocating carriage B carrying the stencil-frame, of the web D for carrying' the sheets of paper, of the impression-roller E, of the inking-roiier H, and of the bell-crank lever N having an arm N formed on its upper end and having its lower end n adapted to come into Contact with and be operated by the bottom side of the carriage B as it reaches the end of its printing Inovement, all :is and for the purpose specied.

JOHN JOFEH. Vitnesses ROBERT C. PHILLIPS, W. H. JAMES.

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