US2032047A - Printing press for printing spots of wax carbon on sheets of paper - Google Patents

Description

Feb. 25, 193e. W F EUR@ [2,032,047

PRINTING PRESS FOR PRINTING SPOTS OE WAX CARBON ON SHEETS OF PAPER Filed Ot. l2O, 1934 MAMMAAAAMAMMA/MAA M AAAM" fvvvvvvvvvvyvvvvvvvvvvvvvvvvvvvvq 3 INVENTOR.

WML/A41 ff BURKE ATTORNEY.

Patented Y Feb. 25', 1936` UNITED STATES PATENT. o'FFicE .PRINTING PRESS FOB PRINTING SPOTS OF WAX CARBON N SHEETS 0F PAPER william F. Burke, Athens, ohio, as'signor to The McBee Company, Athens, Ohio, a corporation Y of Ohio Application October 20, 1934, Serial No. 749,251

heated and all the parts o'fit which contact the` wax lcarbon compoundmust be heated including the type bed and inkplate.

.10 It is well `known in the art that the make up time is the most expensive part of the printing and Rutkoskie provides a'large number of drilled and tapped apertures in the lock-up base to facilitate the mounting of the printing plate butv l even this arrangement consumes a considerable Y period of time; Others have attempted toevercome this by means of electro magnets mounted in the type bed and then placing magnetic material in the back of the I printing .plate so that the magnetism will hold the plate in position. 'I'hese save some time but require -a specially prepared printing plate. Itis moreover unsatisfactoryA because if one were to attempt to use it in a printing Y press for printing spots of wax carbon on sheets of paper the. heat would quickly ruin theinsulation of the magnetic coils thus producing a short which would necessarilyk destroy the usefulness of Y 'that the electric magnets may be used in the type .bed without the slightest deleterious effect of the heat'upon the magnetic coils. f

lA further object is to provide printing plates, veither formed entirely of magnetic metal so no special construction of Vthe plates is required, or a magnetic metal base and a type metal plate. Y

i A further object is to provide @or a plurality of magnets'soconnected that a printing plate or a 45 plurality of them can be securely held at vany ,location on the type bed. l'

My meansof accomplishing the foregoing ob'- jects maybeimore readily understood by having referencel to the accompanying drawing, which 50 is hereunto-annexed and is a partf .this'specii cation., in which- Fig. l Ais-a top'or plan view of printing Press Fig. 3 is a fragmentary detail view on an enlargedscale for the sake of clearness.

Similar reference numerals refer to similar parts throughout the entire description.

As shown in the drawing, the type bed l is of the 5 standard construction used on va Kelly press, though it will be clear that my invention is not limited to that press but is referred to solely for illustrative purposes. The bed l is provided with the usual rack 2 for its reciprocation and has an 10 `inl: plate 3 adjoining it.

Provision is made for heating the type bed l and ink plate 3 by means of electric heating elements 4 mounted in the bed and plate respectively. As my invention does not relate to the heating of 15 these parts, I shall not further describe it. 'I'he Rutkoskie patent fully 'sets forth the means for that purpose.

AThe bed is shown mounted upon rollers 5 in the Y usual or customary manner. In the type bed l 20 I mount a plurality of electric magnets 6, their cores 1 extending through the type bed l. These cores are preferably surrounded by a layer of non-magnetic material l2 clearly seen in Fig. 3. 'I'he windings 6 are connected4 by electric con- 25 ductors to a panel 9 through which any series of magnets may be energized, so as to exert a magnetic pull upon a printing plate l0'.

As shown in the drawing, these plates may be made of steel or'iron, or any suitable mag- 30 netic substance. These plates preferably should have their surfaces plated and polished or they may be formed of non-metallic material afterwards attaching suitably shaped pieces of magnetic substance or they may have an electrode- 35 insulation, it will be obvious to persons skilled in theart that my invention is not limited to any speciiic typeof insulation but any protective covering which will serve toinsulate the mag-a nets 6 from the heat produced by the electric heating elements l will be withinthe scope of l invention. L

Preferably the electric conduits are flexible so as tn permit the reciprocation of the type bed I without interfering 'with the flow, of the current to the magnets.

While I show and describe a speciiic arrangement for connecting the coils to the panel 9,' it will be obvious, to persons skilled in the art, that the invention is 'not conned to any specie typeof apparatus for this purpose, and

-any suitable or convenient vmeans whereby any desired set of magnets can be cut in as found necessary, will serve equally well as the form illustrated.

Having described my invention what I regard as new and desire to secure by Letters Patent is:

1. In a type bed for printing presses for print-A in g spots of wax carbon on sheets of paper, a.

plurality of heating elements to heat the bed, -a plurality of electric magnets mounted therein, said magnets being spaced from each other,

means to supply electric current to said magnets,

vprotect the Winding means to supply said current to any predetermined number of said magnets, and means to of said magnets from the heat.` e

2; In a reciprocating type bed for printing presses for printing spots of wax carbon on sheets of paper, a plurality of heating elements to heat the bed, a plurality of electric magnets mounted therein, said magnets being spaced from each l other, means to supply electric current to said magnets, means to supply said current to any predetermined number of said magnets, and means to maintain said current supply continuously during the 'reciprocation of said type bed and means to insulatesaid magnets from heat.

' 3. In a reciprocating type bed for printing of paper, a plurality of heating elements to heat the bed, a plurality of electric magnets mounted below said type bed, said magnets being spaced from each other, means to supply electric current to said magnets, means. tojsupply said current to any predetermined number of said magnets, and means to maintain said current supply continuously during-the reciprocation of said type bed.

5. In a type bed .for printing presses for printing spots of wax carbonon sheets of paper','a plurality of heating elements to heat the bed, a

. plurality of electric magnets mounted therein,

said magnets being spaced from each other, the cores 'of said magnets extending through said type bed and terminating at its surface, flexible electric conductors to convey electric current to said magnets, and means to Supply said current to any predetermined number of said magnets 6. In a reciprocating type bed for printing spots of wax carbon von sheets of paper, a pluralityof heating elements to heat the bed, a

plurality of electric magnets, the cores of which extend through said type bed to its surface, the

windings of said magnets being below said typebed, said cores being spaced from each other, and means to protect said magnets lfrom the -heat of the bed.

7. In a reciprocating type bed for printing spots of wax carbon on sheets of paper, a plurality of electric heating elements located in said type bed to heat-it, a pluralityrof electric magnets, theY cores of which extend through said type bed to its surface, the windings of said magnets being below said type bed, said cores being spaced from each other, and means -to protect the cores of said magnets from the heat of the type bed. y

-8. In a reciprocating typevbed for printing spots of wax carbon on sheetsof paper, a plurality of heating elements to heat the bed, a pluralityj of electric magnets, the cores of which i extend through said type bed to its surface, the

windings of said magnets being below said type 1 bed, and said cores being spaced from each Other.- o

l WILLrAM rn BURKE.

Images