US1769452A - Bookbinder's press - Google Patents

Description

July 1, 1930. J. MURRAY BOOKBINDER'S PRESS Filed Juiy 1, 1929 2 She ets-Sheec 1 I /NVEN TOR Jon/v Maze/w July 1, 1930. I JJVIURRAY 2- BQQKBINDER'S PRESS v Filed July 1, 1929 2 Sheets-Sheet 2 /NVEN TOR Jau/vMu/eenY Patented July 1930 Jenn MURRAY, or Gawa n-,1 ENGLAND" nooxninnnivs .rnnssaii ncauon fiied u1 1, 1929, Serial No. 375,310, and in Great Britain September 14, 19281"; i

J This invention relates to ;a bookbinders press having relatively'movable head and platen elements,- and more particularly to presses. ofthe kind. described, in the prior ,5 specification No. 1,527,902 issued 24th February, 1925; The invention has for anob platen withalte'rnative means-for advancing the platen rapidly or slowly. In opera tion, the material to. be pressed is placed in position inv the, press and partially com- 7 15 pressed by advancing theplaten rapidly by thrust on a handle carried thereby. The

thrust on the material causes a faceplate yieldingly supported from the fixed head to retire into contact with the fixed headand thus effect engagement of. slow advancing gearing by actuation of which the material may be fully. c ompressed. When the ma terial has been tied up, the slow advancing gearingiis disengaged and the platen retracted to permit removal of the material.

In accordance with the present invention,

there is provided for moving by power the movable element (say the platen element) an electric motor operatively connected to the 30 tive in the cycle .of operations of the press. In practice the gearing isdriven by means of a band, chain or thelike from an electric motor mounted on a wheeled carriage supporting .thevpress, the current supply connections to which motor-areautomatically completed and interrupted 'in r the cycle of operations. t In one embodiment of the invention there are carried on the underside ofthe press table but insulated. therefrom pair of bus bars extending longitudinally of the. press;

said bus bars beinglincluded in' the motor circuit, and normally bridged .by a brush carried by the movable platen. Attached to the face plate on the fixed head of the-press is a contact which, when the faceplate is depressed, and after driving engagement of -0 the gearing hasflbeen efi'ected, electrically to' effect compression of the material.

the motor stopped. The timing of thee-peratlon ofthe trip, device is regulatable by of the material moves the laten rearwardly.

I lars. Further rearward movement of the. gearing and adapted to be-rendered inopera- .cordance withv the invention is illustrated .inatically 'the means for engaging the planeinterconnects two stationary contact pillars H included in the motorcircuit whereby to start the motor to propel the platen slowly As in the priorconstructiomthe platen" i may be rapidly advanced by operation of a a3 handle mounted thereon so that the material is partially compressed to depress the face plate on the fixedhead to effect engagement of the gearing and closure of the motor circuit. f I .12

When the pressure on the material attains a predetermined intensity, a faceplate .resiliently mounted on the platen yields to" the pressure andfin moving releases a trip devicecarried by the platen. so as to effect di engagement of the brush from the bus bars, the motor circuitbeing thus interrupted and justment of aset-screw carr-ied by the face f plate on theplaten andco-operatingf'with' the trip device. When the material liasbeen tied up, a release lever is operated to disengage. the gearing, whereupon expansion The faceplate onthe Xed head is thus relieved and the contact carried therebyis disengaged from the stationary contact pilplaten brings a follower on the trip device so into engagement with a cam whereby the brush; is restored to position in engagement with the bus bars. I 4.A b'ookbinders press constructed in 21C,

in the accompanying drawings in which Fig. lisqaperspective view from the rear side of'the press; Fig. 2 is fragmentary longitudi; nal. section Fi'g. 3 afragmentary, inverted plan view of the press table. Fig, 4 is a fragmentary detail view showing diagr.am-.

a ye aa Y The press shownincludes a fixed head 1 and a movable platen 2 mounted to perform rectilinear-movements toward or away from the fixedhead 1 on a table 3. eidenotes a rack bar' carried by the platen 2 and meshing ,Witha gear pinion 5. 6 (Fig. 1) denotes a handle, carried by the platen 2.

( supported the rearward travel of the platen with a; from the fixed head 1. 'As in the construcl ti on,described in the prior specification, the face plate 7 is. operatively connected to atappetyr od 1) serving to trip into '7 denotes a face plate resilientl stationary cam 41.

placed-on the table 3' against the faceplate v7. 1 The platen 2 is rapidly advanced by .sun' and-planetaryf gearing en thrust onthe handle 6 wherebyto compress f sing so tha ,xVhenthe face the materialbetween the jt'aceplates and plate, urged towardsgt e head 1, said ace-plate? retires,the tappet gearing 1s 'operatively connected to the gear. ated, whereby the sun-andi in operatiyely connected 7 Inion and, as the face plate 7 further retires, the contact 17 interconnects the conta'ct pillars 18, 19 whereby the motor circuit is closed and the motor is brought into actionto advance the platen further to com- -platen 2; v press the"materialJAs the -pressure 'ing; e tablet; is supcreases, the plates 25, 26mm the platen are ported onpedesta l; ed to the tablelQ pressedt'ogeth'er in oppo'sitionto the action 1 wheeled carriag iproyided with adreiwof "the s'priitlgs 27, 28,28- until; at 'al point 7 3; Dep ng from the underside of when the requisite pressure has beenfattained thetable 12a 11 .electricinotor i t-0f which" as determined by thesetting of the set-screw aftis 'op eratively connected .29, said" screw 29 trips the bell-cranklever planetary geatingby means and enclosd ini a guard Carried by biit in teTis-a contact i As "shown;

brush 38 In'oyesclear of thebns bars 20;22 and interrupts the motor circuit to arrestthe the lever-lO 'is inani'pulated to disconnect the sun-and -planetary 'gearin'g from the pinion f 5to permit rearward movement of the platen by expansionQfl-the 'material. The face p and the contact 17 disengaged'froin the contact pillars 18, 1-9. On 'further rearward movement of-the platen 2* by" operation of the handle '6 t follower roller 40. engages the stationary cam -41 wherebyi the V trip i device 30,35 is reset in the positijon in which the brush" 8 engages the bus bars 20, 22,

nected toone pole of the motor'l of whic'h the other" pole is electrical y connected "through a; switch- 21 to one; end iq'fa bus bar "22 disp0'sed"parallelpwiththe bus baa-201 but spaced therefrom 24f denote I supply leadst o car ried by the; V p1aten2i V I whichiand "laten isinterposed aplate '26 spaced platenQ by springsf27 fthe iiace' iplate 2'5fbein spaced tromtheplate '26 a j i ng i pri g 2 a interposed-d1- 1. In abookbinders'pre'ss; 'incombinatio'n rectly; between thefac'ef plate and-the with afixed hea'dand moyablepplaten, an platen 2, said springs penetratmg apertures in the plate '26and serving, in the operat on a .of the press-, to transmit the major'portlon v ofthe loadon'jthe faceplate 25 to the platen Screw-threaded through the[ Ge: plate 25, near ithe 'lowen edge there 7 screw 29 gageable ment to saidplaten, current supply connece tions", to said motor; a brush movable with said plateir'an d engageable with said con nections, a tripfdeyice' also movable with withthe} arm 30 of] abfell-crank leverjpivoteda the platen f2 and having another a urged? downwardly by a spring: 33

" arm 32 constitutes a latch normally en in -ulrged arm 34Qseci1redto a brush n eans movable with said platen for brush troni said connections, and nieans for resetting said ftripfdevice and said" brush 'in the retnr'n moveinent of-s'a-id plateni l r 524111 bookbinderspress, in combination qface plate yield-ingly suppor ted by sa'i'd'plat: en; an electric motor" for imparting advance movement tosaid platen; current supply connectionsc; said 31013011, a brush engagea'ble "with sai "connections, a trip device opera- H l I a tively related'to said brush-and means ad v ting a"switch-deyi'ce. Securedn ,jus'tably 'fitted to said face platef0r actuat the other end of the shaftfidis-a lever 39 ing-sai'd'tripdevicetodisengage'said brush carrying .a follower r0ller40 'engageable in from 'sai'd c'onnections."

free iendbffwhich l V normally engaging the bus bars 20, electrically to'finterconnectisaid: nsh'in conjunction -with the 'ar Inoperation, the material to be pressed is 30, 32 and releases thejar nfil whereby the moton; When thematerial hasbeen-tiedup,

g now readyv forfa subsequent actuating siaid trip' device to disengage said plate 7 is now restored -to; initial position electric-motorforiirnparting adyance movesaid platen and operatively relate'cl to said 'withafiXedhead and -a movable platen,=a

v 3. In a bookbinderspress, in combination, a fixedhead, a platen movable towards said head to impart by a' first-stage movement a preliminary pressure to material located between said platen and said head, an electric motor for imparting a second-stage movement to said platen to impart afinal'pressure to said material, current supply connections to said motor, a brush movable with said platen and engageable. with said connections, a'trip device operatively related to said brush, pressure-operated means for actuating saidtrip device to disengage said brush from said connections, and means for resetting said trip device and'said brush.

4; In a bookbinders press, in combination, a fixed head, a platen movable towards said head to impart by a first-stage movement a preliminary pressure to material located between said platen and saidhead, an electric motor, atraln of gearing through which a second-stage movement is imparted to said platen by said motor, current supply con- I nections to said motor, a brush movable with said platen and engageable with said connections', a trip device also movable with sa d platen, means for actuating-said trip device to disengage said brush from said connec tionson attainment of a predetermined maximum pressure on said material, and means for resetting said trip device and said brush.

5. In abookbinders press, in combination,

a fixed head, a platen movable towards said .head to impart by a first-stage movement a preliminary pressure to material located between, said platen and said head, an electricmotor, a train of connections through which a second-stage movement is imparted to said platen by said motor, said train including a rack and pinion and slow motion gearing operatively connectible to said pinion, a manually operable tappet rod to effectoperative connection of said gearing with said pinion, current supply connections to said motor, a brush movable with said platen and engageable with said connections, means for startlng said motor when said gearing is connected to said pinion,a trip device movable with i said platen and operatively related to said brush, means for actuating said trip device to disengage said brush from said connections on attainment of a'predetermined maximum pressure on said material and means for resetting said trip device and said brush.

In testimony whereof I have/signed my name to this specification.

JOHN MURRAY.

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