Tag: Jobbing Press

  • History of the Jobbing Platen

    History of the Jobbing Platen

    After the 1830s, the growth of the postal ser­vice and the expan­sion of com­merce led to growth in demand for small, print­ed arti­cles.  The Job­bing Plat­en met this need for the print­er: being quick­er than the ear­li­er hand press­es; and more suit­ed to small work than cylin­der press­es. It’s tempt­ing to think that the plat­en press sim­ply appeared — ful­ly formed — but there were many small advances that made that style of press pos­si­ble. Daniel Tread­well, an Amer­i­can, sought an 1818 patent to pro­tect his design for a mod­i­fied hand press that used foot pow­er (like a trea­dle) to deliv­er the impres­sion.  He trans­ferred the inven­tion to Eng­land and the firm of Baisler and Napi­er made the machine at their works at Lloyds Court, Crown Street, Soho; but only one is report­ed to have been sold.  The rotat­ing ink disc was invent­ed between 1819 and 1820 by Sir William Con­gereve for secu­ri­ty print­ing.  John Kitchen of New­cas­tle Upon Tyne patent­ed the ver­ti­cal forme in 1834.  It seems the machine would not have been com­mer­cial­ly suc­cess­ful, but was designed in the style of goth­ic church fur­ni­ture”.

    The First Usable Platen

    Stephen Rug­gles, from Boston USA, devel­oped the Engine press in 1839 but the bed and plat­en were hor­i­zon­tal.  Despite this, the press claimed 1,200 impres­sions per hour.  It was his devel­op­ment of 1851 of the Card and Bill­head Press” that opened the era of the first usable plat­en: this relied on his strange ink­ing mech­a­nism.  The approach is to have a large cylin­der, flat on one side for the type.  The cylin­der is cov­ered in ink and as the rollers pass around it, they draw ink from the cir­cu­lar part of the cylin­der and deposit it on the forme.  This press was made in Britain by the Birm­ing­ham Machin­ist Com­pa­ny as the Invic­tus and also Fur­ni­val and Com­pa­ny of Red­dish.  The prin­ci­ple was lat­er adapt­ed by Adana for their T/P48.

    The Modern Platen

    The pro­to­type plat­en press was devel­oped by George Gor­don of New York.  His ear­ly press (1851) was named The Alli­ga­tor because of its rep­u­ta­tion of crush­ing limbs of those feed­ing the press.  This first ver­sion had a fixed ink­ing pan­el, it was 1856 before he added the rotat­ing ink­ing disc.  In 1872, the throw off” was added: a mech­a­nism to allow the oper­a­tor to dis­able the impres­sion when a sheet had been mis-fed, for exam­ple.  Again, the idea was not new hav­ing been patent­ed in 1852 by James Young of Philadel­phia. Crop­per of Not­ting­ham began to make Gor­don’s press­es under the name Min­er­va, but the term Crop­per to define that type of press became com­mon­place.  Oth­er, local­ly designed, press­es used Gor­don’s idea like the Arab from Hal­i­fax.

    The Parallel Platen

    Improv­ing on the clam shell” approach, Mer­rit Gal­ly of New York devel­oped a press in 1859 called the Uni­ver­sal which brought the bed and the plat­en togeth­er with a par­al­lel impres­sion.  This was improved by the Vic­to­ria and Phoenix press­es.  In the UK, Green­wood and Bat­ley of Leeds sold a very sim­i­lar press under the name Sun; Daw­son’s of Otley the Mitre; and Har­rild of Lon­don the Fine Art Brem­n­er.

    The Powered, Automatically-Fed Platen

    Know­ing that the effort of a boy could not be sus­tained to thou­sands of impres­sions each hour, work began on mak­ing effi­cien­cies of space and pow­er.  In 1893, Har­rild of Lon­don cre­at­ed a plat­en press run­ning back-to-back: two mov­ing platens each print­ing against a sin­gle, two-sided, fixed bed. With steam and elec­tric pow­er, the next chal­lenge was to feed the press with paper. A grip­per was patent­ed by God­frey in the 1880s, and an auto­mat­ed feed for US Chan­dler and Price press­es was being sold by 1913.  Per­haps most known to us in the UK is the inven­tion of Gilke, a Hei­del­berg Engi­neer, who cre­at­ed the wind­mill feed in 1912 which was incor­po­rat­ed in to the 1925 Hei­del­berg Auto­mat­ic Plat­en.

  • Heidelberg Platens

    Heidelberg Platens

    It’s these press­es that you’ll see in many mod­ern print­ing works.  They have a ver­sa­tile auto­mat­ic feed but the machines are more often used for cut­ting, creas­ing and num­ber­ing than for print­ing.  Sec­ond-hand machine often have had their ink­ing equip­ment removed.

    The machine uses air suc­tion to pick up paper — con­trast this with the Arab which had no auto­mat­ic feed even for the last machines pro­duced in 1959.  The suc­tion sys­tem uses two arms — one lift­ing paper from the stock while anoth­er draws paper that’s just been print­ed away from the plat­en.  This mech­a­nism gives the press the nick­name the wind­mill’.  While the small print­er will use lay gauges to posi­tion paper on the plat­en, dif­fer­ent Hei­del­berg mod­els used dif­fer­ent approach­es — the paper was held by the wind­mill while print­ed; or was dropped on to lays on the plat­en; or was shift­ed in to posi­tion by reg­is­ter guides.

    Ink­ing is through two forme rollers with an option­al rid­er roller.  Ink reach­es the forme rollers from the duct, via. a duct roller; four rollers and then to the ink­ing drum which rec­i­p­ro­cates.

    There was a gap in sales dur­ing World War 2, but new British machines fol­low­ing the war were sold as Orig­i­nal Hei­del­bergs’.  In 1957 the machine cost £1000 and was sup­plied with instal­la­tion and a week’s worth of guid­ance from the man­u­fac­tur­er.

    In 1958, two mod­els of press were avail­able badged as Orig­i­nal Hei­del­berg” platens.  Their spec­i­fi­ca­tions; along with the 1958 pub­lic­i­ty are shown below.

    Heidelberg Platen Specifications

    Orig­i­nal Hei­del­berg 10″ x 15 Orig­i­nal Hei­del­berg 13″ x 18
    Largest Paper Size 10.25″ x 15 13.375″ x 18.125
    Small­est Paper Size 1.5″ x 2.75 3.5″ x 4
    Inside Chase 10.25″ x 13.375 12.625″ x 17.75
    Max­i­mum Run­ning Speed 5,000 iph 4,000 iph
    Floor Space Required 58″ x 311 49″ x 66
    Pow­er Required 1.1kW / 1.5hp 1.5kW / 2.5hp
    Net weight 2,400 lbs 4,600 lbs
    Impres­sion­al Strength 40 tons 60 tons

    Original Heidelberg 10″ x 15

    Heidelberg 10 x 15
    Hei­del­berg 10 x 15

    Original Heidelberg 13″ x 18

    Heidelberg Platen (13" x 18")
    Hei­del­berg Plat­en (13″ x 18″)