US1799363A - Creasing press - Google Patents

Description

April 7, 1931.

F. M. GREEN CREASING' PRESS Fil'ed Oct. 19, 1929 '2 Sheets-Sheet ATTORNEYS.

April 7, 1931. F. M GREEN 1799363 CREASING PRESS Filed Oct 19; 1329 2 sheei s-sheet 2 IN V EN TOR.

A TTORNEYS.

Patented Apr. 7, 1931 CR-EAfiING rnnss Application filed Gctoher 19, 1929. Serial No. 400,862.

The present invention relates to cutting and creasing presses of the type used 1n the paper box industry and haspartlcular reference to creasing presses having massive platen castings.

One object of the invention is to provide an improved shaft arrangement for platens of this type.

Another object is to provide a quickly replaceable shaft structure.

A third object is to provide simplified bearing means for the power shaft.

Further objects and advantageous features will be readily apparent from the de tailed description following in conjunction with the accompanying drawings, and will be particularly pointed out in the appended claims.

In the drawings:

Figure 1 is a side elevation of the improved press;

Figure 2is a perspective View of the platen base with the detachable shaft; mounted therein; and I Figure 3 is an enlarged sectional detail of the adjusting dog and the manually operated dog engaging mechanism.

Figure 4 is a perspective view of the platen shaft.

It is of advantage to provide a steel shaft for strengthening and bracing the massive platen castings and to eliminate costly breakdown delays by detachably securing the steel shafts to the castings. It is also of advantage 35 to provide a bearing arrangement-for the power shaft which permits ready removal of the power shaft fromits bearing; 1 have devised a simple construction for accomplishing these desirable results, and the following 40 is a detailed description of a preferred embodiment of the structural features of my invention.

Referring to the drawings: 10 designates a cutting and creasing press of the heavy duty- 45 type, having the usual press bed 11,

ner. Theplateni end of ea'chdraw bar 15 is mounted on an eccentric 19, bored to receive the draw pins 20 at the end of the platen shaft 21. Y This shaft'21, illustrated in perspective in 65 Figure 2 and Figure 4, is generally rectangular in form and fits within a recess or slot 23 cut within in the platen base 24, and extends the entire length of the platen and protrudes beyond on each side. Bolts 25 or the like removably retain the inserted shaft within the recess 23, the platen 26 being secured to the upper face of the base by bolts 27 or the like.

As shown in Figure 2, the platenbase' 24 has two arcuate-portions 28 for rolling on cooperating tracks 29 on the frame, links 30 being respectively pivoted on pins 31 fixed in standards secured to the press, and 011 pins 32 secured to or integral with the platen base25.

' The eccentrics 19 have laterally positioned levers or 'arms 33 which 'may be shifted to vary the position of shaft draw pins 20 with respectto the draw bars 15 and thus place the platen into operative position. Each shiftable lever 33 is tubular and has a trip 34 therein, movable into engagement with an adjustable dog35, for a purpose hereinafter describedJ i v A coil spring36 is housed within the tubular lever33 and extendsinto acap 37 fitted on the end thereof. The trip '34 has an eX- tension 38 passing through an opening in the cap 37, the extension being bifurcated and having a pivot pin 39 secured to the bifurcations thereof upon which a handle 40 is mounted; the handle 40 has a cam shaped end 41, engageable with a bearing plate 42, positioned on the cap member, to manually move the trip, 34 against the pressure of the spring 36 and out of engagement with the adjustable. dog 35. As shown in Figure 3,

the dog 35 is adjustably mounted over two adjacent toothed segments 43, abolt 44 hav-- ing its head 45 movably positioned within grooves formed in the sides of the toothed seg ments and serving to releasably secure the dog 35 in position ad]acent a desired set of teeth Referring to Figure 1, the power shaft 12 is mounted within a split bearing member at the rear of the press comprising a lower thrust bearing 47 and a cap 48 secured to the lower bearing by bolts 49. The cap and lower hearing are joined at an angle to the horizontal, so that the lower thrust bearing may receive allthe thrust and so that no thrust is imparted to the cap member. The press bed 11 has the usual catch 50, pivotally mounted on a standard 51 at the topthereof, with the usual screw 52 contacting the press 11.

The improved construction permits a ready removal of the shafts whenever they are broken or damaged in any way, expedites the time necessary for replacing the press in active service, and reduces the expense, as the cost ofreplacing the broken part is proportionately less. In addition, the split bearing for the power shaft permits ready removal of the power shaft without dismantling the rear of the press.

Vhile I have described specific embodiments of the novel imp-rovements,,it is obvious that changesrin structure and arrangement tofit other types of presses may readily be made, withinthe scope of the invention as defined in the appended claims.

Having thus described my invention, I

claim;

1. Inv a press, a platen casting, a recess having right-angularly positioned sides therein, a rectangular steel shaft formed to snugly fit in said recess and having cylindricalzend portions, and bolts removably locking said steel shaft in said recess.

2. In a press, a platen casting, a. recess having right angularly positioned; sidestherein, a: rectangular steel shaft formed to snugly fit in said recess, bolts removably locking said steel shaft-,insaid recess, cylindrical, draw pins at each end OfSZllCl shaft, a; movable eccentric mounted on each draw pin,

platen bars mounted onsaid eccentrics, and means guiding said casting to turn about av moving center.

In testimony, whereof I affix my signature.

FREDERICK M. GREEN.

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