US1694720A

US1694720A - Sheet-holding device

Info

Publication number: US1694720A
Application number: US219411A
Authority: US
Inventors: D Stephen Haines Plum
Original assignee: American Type Founders Co Inc
Current assignee: American Type Founders Co Inc
Priority date: 1927-09-14
Filing date: 1927-09-14
Publication date: 1928-12-11
Anticipated expiration: 1945-12-11

Description

Dec. 11, 1928. 1,694,720

5. H. PLUM. 2D

SHEET HOLDING DEVICE 7 Filed sb t. 14, 1927 Patented Dec. 11, 1928.

i s l.

STEPHEN HAINES PLUM, 21), OF hEJiDIEON, NEW" JERSEY, ASElIG-N'Glt .hIiEEIlICAIxl TYPE JEOUNDERS COl liPlLhlY, A CORPORA'TTUN OF NET/i JEHSIESI'.

SHEET-HC/LDTNG DEVICE.

Application filed September M, 1927.

This invention relates to improvements in sh eetholding devices for use on platen pri ntin presses. The object of? the invention is to provide improved sheet holding devices a lingers adapted to be mounted on a platen adjacent its upper or forward edge for the purpose of holding down the edges or corners of a sheet after it has been printed. so to prevent the sheet -l'rom curling or buckling and thus facilitate mechanical or pneumatic. delivery.

The invention relates particularly to sheet holding devices of the kind disclosed in. the ll. S. patent No. 1,536,351, dated. May 5. 1925. In this patent the sheet holding device romprises a linger bar mounted to oscillate near the upper edge of the platen. To the bar is secured a plurality of holders adapted to be adj usted parallel with the platen. The hold ers carry lingers adapted to reach in over the platen and catch the corners of the sheet.

It is a specific object of this invention to provide improved. holders and lingers adapt ed to be mounted on. the linger bar. the latter being operated in the manner shown in the patent referred to.

To this end the invention is embodied in a sheet holding device constructed and an ranged as hereinafter set "forth and as illustrated in the accompanying drawing in which Fig. 1 is plan view of a platen of the type used in a Chandler & Price platen press equipped with sheet holding devices embodying the invention. parts being broken away.

Fig. 2 is a view at right angles to thgure 1.

Fig. 3 is an enlarged detail view ot the device.

Fig. 4; is a View at right an gles to Figure 3.

lie'l errilig to the drawing, the TOCFQJTG'HCO nun'ieral 5 denotes a platen which. is opera ted and constructed like a platen in a Gordon press, or a. platen press of the well known Chandler & Price type.

Underneatl'i the rear corners of the platen there are secured two

brackets

6 and 7 torming liiearings in which is journaled a holder shaft 8. which. at one end carries an, arm 9 to which is pivoted at 10 an operating lever 11. The other end of the lever 11 pivotally con nected to the press in any suitable manner not shown, but disclosed in the said patent.

The other end of the shaft 8 carries a stop arm 12 having a stop 13 adapted to engage the bracket to limit the movement of? the holder shaft in a. direction away from the platen.

Serial No. 219.411.

On the holder sh aft 8 there are zuljustaliily iounted two linger holder... Each holder comprises a base 15 mounted to slide on the shaft and held thereon in adjustable friction-d relation by means of a spring 16 adapted to engage a serrated or toothed. portion 1? of the shaft. The base carries an upstanding threaded stem or post 18 and sprin pa wl ll.) having a tooth 20.

A sleeve 21 isin threaded engagement with the post 18 and is at its upper eno termed with ahead 22 which carries a curved linger chan nel guide 23. The sleeve 21 is knurled as at 24. Through the charmel passes a linger 25 made of very thin spring steel.

The hail of the platen is marked 1-1 and the sheet 26.

In operation the holder shaft 8 is oscillated with. respect to the platen in a well known manner and whereby the lingers 25 are caused to descend upon the sheet 26 to prevent its delivery edge 2T trom curling so it cannot be gripped by the sheet i'einoviu i'neans a liter it has been printed. At other times the shaft 8 is oscillated. to remove the lingers from. the platen as is obvious in order to permit the sheet to be printed.

The finger holders are adjustable along the holder shaft 8 by a mere pushing motion which causes the holding spring 16 to slide over the teeth 17. The lingers 25 are vertically adjustable by screwing the sleeve 21 up or down on the p 0st 18 during which movements the spring tooth. slides or slips over the knurls 24-. When it has been adjusted vertic-all' the spring lIOUlll. 2O prevents accidental. rotation. ln the other hand. when once the sleeve 21 has been adjusted vertically, it may be turned more or less on the post 1.8 to adjust the fingers angularly or laterally on the platen.

A. further adjustment is provided in that the finger maybe pulled or pushed through the channel. guide to adjust the linger reach in over the platen. A still further advantage ot' the eonstructi on is that by a mere turning movement the fingers may be moved away or outside of the platen to permit the platen bail to be lifted.

it will be seen therefore that the sheet holding lingers according to this invention are adjustable vertically. horizontally and longitudinally. i. e. lengthwise of the fingers 2 5,. and that the holders are adjustable axially on the shatt S. This invention therefore provides all the adjustments required in order to areonnnodate all sizes of matter to be printed. 'lfhe entire absence of screws, clamps or bolts a feature providing quick adjustment and eliieieney.

l. elaiin l. The combination with the platen ot a press. of sheet holding resilient lingers pivoted on said platen ior momentarily holding the delivery edge of the printed sheet a graiunt the platen and means tor adjusting Fltlltl tingers vertically with respect to the platen.

The combination. with the platen ot a. press. ol' sheet holding resilient lingers pivoted on said platen lt'or momentarily holding the delivery edge of the printed sheet against the platen and means tor adjusting said linvertieall and horizontally with IUSPCL't lo the platen.

53. The combination with the platen of a presn. oi sheet holding resilient lingers pivoted on Siiltl platen l0) momentarily holding the delivery edge oi the printed sheet against the platen and means for adjusting said lingers vertically horizontally and laterally with respect to the platen.

l. 'lae eou'ibination with the platen of a press, of sheet holding resilient lingerspivoted on said platen tor ,ll'lOlTlBHlllll) holding the delirenv edge of the printed sheet against the platen and means for adjusting said lingers vertically, horizontally, laterally and longitudinally with respect to the platen.

5. A sheet holding device (it the character setforth eomprisii'ig a base having an. up-

right post. a member adjuutahly mounted on said pi a curved. guide on billltl member and a l'OHllleIlt sheet holding linger in said guide.

(3. ll. sheet holding device ol the character net 'lorth comprising a base, mean. for mount ing said base in adjustable parallel relation to the platen of a prer said base having an upright tin-aided peat. a eleeve in threaded engagement with the POSY, a. channel earried by said sleeve and a viehling resilient aheet holding: linger in said channel.

A sheet holding device ol the character described eoinprisin a base. a threaded post extending upwards from the bat-2e. a member in threadial engagement with the post to adjust ea id member thereon. a pa \vl on the bare tor maintaining said member in adjusted positiou on the post. a curved channel guide on said member and a resilient sheet holding linger passing through and. mounted in said ehannel guide.

Fl. lilAlNES llLUll l. 21).