US1920891A - Driving gear for printing presses - Google Patents

Description

1933- w. ROCKSTROH DRIVING GEAR FOR PRINTING PRESSES.

Filed May 5, 1952 /n vento Patented Aug. 1, 1933 Walter Rockstroh, Dresden, Germany Application May 3,1932, Serial No. 608,961, mm

' in Ge'rmanySeptember 28, 1931 11 Claims. (01.101-250) This invention relates to improvements in driving gear for printing presses and has particular but not exclusive reference to flat bed machines.

Prior to the present invention it hasbeen customary to mount the elements of the gear for driving fiat bed printing presses individually in thesupporting frame of the press, so that a separatemounting within the supporting frame was necessary for each of the shafts of the drive. Printing machines have also been constructed in which a part of the drive is mounted outside the wall of the machine. In neither of these types of machine, however, can the driving mechanism as a whole be detached from the machine, since each of the, shafts is mounted separately in the supporting frame and must therefore be detached separately from the machine. 1

The present invention has amongst its objects to obviate this disadvantage and with this and other ends in view all the parts of the driving gear serving to impart motion to the component parts of a printing machine are encased in a separate gear box.

7 The gear box is preferably detachably mounted and may be situated within or without the supporting frame of the press.

In a device according to the present invention the gearbox controls the movements of all 30 the movable parts of the press, whether the rotary motion for driving the continuously rotating impression cylinder or that for driving the one-revolution control shaft which produces the timed movements. Each of the shafts which '35 serve to impart motion to a part of the press is detachably connected to the corresponding driven member, for example, by a simple coupling or by toothed wheels. The driving gear can be of any convenient type, there being many known 40 constructions which can be inserted in a subthe invention,

, Figure 2 is a sectional plan view of the con struction shown in Figure 1.

The supporting frameof the printing press illustrated is constructed in twoparts, a lower part 1 and an upper part 2, the sub-frame 3 being bolted or'otherwise detachably mounted on the lower part 1. The upper part 2 which is suitably mounted on the lower part 1 carries the tracksfor the printing carriage 4. In the construction shown, the shafts 5 on which the wheels 6 are mounted are employed for imparting motion to the carriage 4. The shaft 7 makes a uniform rotary movement ,and is therefore used for driving the impression cylinder 8. The, shaft 9 rotates rapidly and may be employed for driving, for instance, the rapidly rotating feed drums 11 of the feed apparatus which delivers the paper or other material to be printed to the press. The driving motor 10 is so mounted on the gear box 3, that it does not require any special support in the frame of thepress.

A driving gear such as described has many advantages over the constructions heretofore proposed; for example, the individual mounting of numerous shafts in the frame is obviated; The gear boxes may be manufactured by mass production and they may be so constructed that one gear box can be used for several sizes of machines, and furthermore they may be inserted complete in the machine. The driving gear may also be located in a place within the machine where it neither weakens the frame nor makes the machine longer, as for example the known driving device of stop cylinder machines. The gear requires little attention because it can run in oil and can be detached from the machine without difl'iculty.

I claim:- 7

l. A printing press, comprising an impression member and a printing member, means for feeding the material to be printed between them, a n main frame for said press, a subsidiary .frame detachably mounted on and carried by said main frame, and driving gear for the presshoused in said subsidiary frame.

2. A printing press, comprising an impression member and a printing member, means for feeding the material to be printed between them,

a main frame for said press, a subsidiary frame removably carried in said main frame, and driving gear for the press housed in said subsidiary frame and removable'therewith.

3. A printing press having the usual cooperating members between which the material to be printed is pressed, comprising the combination with the frame work of the press, of

' acradle detachably mounted therein, and driving mechanism for said press supported in said cradleand removable en bloc therewith.

4. A fiat bed printing press, comprising the combination of a frame of said press, a printing carriage reciprocatable thereon, an impression 51. a cylinder for co-operating with said carriage, a sub-frame removably attached to the frame of the press, and driving mechanism for said carriage and cylinder carried by said sub-frame and removable as a unit therewith.

5. In a printing press having the usual movable co-operating members between which the printing is egected,'t he,combination 0fa:machine bed on which saidin ern'bersare carriedja sub-frame removably attached to the bed, and driving gear for the said members and one electric motorcoupled to said gear all carried upon the sub-frame and forming a unitary structure therewith.

6. In a printing press, a machine frame, means for effecting the printing and means for. feeding the material to be printed thereto, "a' gear-box,"

detachably mounted on said frame, and driving gear for said means. contained withinthegear box.

' A fiat-bed printing press comprising a suppqijtingframe, a-printing" carriage reciprocata-ble the'reonfan impression cylinder for 'cooperating -'with 'saidcarriage, feed "mechanism I for deliveringthe-material to "be printed tosa'id pr ss; a sub-frame fdetachably mounted within the saidfsupporting frame and driving mechan'is'm for said carriage, cylinder and feed'mechanism carried by-said' sub-frame and removable as aunit therew-ith,

"'BlfA flat bed printing'press comprising a supporting frame, a printing carriage reciprocatable thereonan impression cylinder for co-operating with said carriage," feedmechanism for deliveringr'naterial to be printed to said press, a subfraine detachablymou'nted within said supportssl ing frame, and a driving motor for imparting motion to the said carriage, cylinder and feed mechanism carried by said sub-frame and forming a unitary structure therewith.

9. A flat-bed printing press comprising a supporting frame, a printing carriage reciprocatable thereon, an impression cylinder, feed mechanism* for delivering thematerial to be printed td said press, a subi-framedetachably mounted in said supporting frame, driving mechanism for the said carriage, cylinder'and feed mechanism "carried by said sub-frame and removable as a unit therewith and detachable couplings extending "from said driving mechanism to the said-carrlage, 5cylinder and feed mechanism for imparting, motion thereto.

E'IOFAflat-bed printing press comprising a sup porting frame, a printing carriage recipr0- i-catableiithereon, an impression cylinder, feed mechanism for delivering the material to be printedto said-press, a sub frame detachably mounted in -'said supporting 'frame; driving mechanism for "the Said carriage, cylinder and feed mechanism carried by-said sub-frame and rmd'va'bleas a unit therewith and toothed wheels for transmitting the drive from said driving mechanism" to "said carriage, cylinder and -feedmechanism for imparting motion thereto. y

III-A printingpres's comprising an impression member and a printing member, means for feeding the "material to be' printed between them,-"a frame'for said-press, a gear-box removably attachecl' to said frame and driving gear for the press housed Within said gear box.

' WALTER ROCKSTROH.

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