US1550867A - Gear - Google Patents

Description

' Aug. 25. 1925. 1,550,867 n H. F. BEcHMAN 'GEAR FiledV May 5,1924 5 sheets-sheet 1 AND MECHNS" Aug. 25, 1925. www? H. r-f. BECHMAN Y Filed May 5. 7.924 3 Sheets-Sheet z I u WM.

l a rr Patented Aug. 25, 1925.

UNITED STATES PATENT OFFICE.

HENRY F. BECI-IMAN, OF BATTLE CREEK, MICHIGAN, ASSIGNOR TO DUPLEX PRINTING PRESS COMPANY, 0F BATTLE CREEK, MICHIGAN, A CORPORATION OF MICHIGAN.

GEAR.

Application filed May 5, 1924. Serial No. 711,219.

T0 all whom t may concern:

Be it known that I, HENRY F. BEGHMAN, a citizen of the United States, residing at Battle Greek, in the county of Calhoun and State of Michigan, have invented certain new and useful Improvements in Gears; and I hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings which form part of this specification.

This invention relates to rotary printing presses in which each printing unit o-rdinarily comprises two plates and two impression cylinders intergeared torotate at uniform peripheral speeds.

The invention is an improvement upon the single page tubular rotary printing presses such as described in my Patents #867,230, dated October 1, 1907, and #1,223,025,'dated April 17, 1917. The primary object of the present invention is to provide improved means for maintaining the cylinders in gear with the driving mechanism, and permit the ready placing of tubular plates upon the cylinders or removal of tubular plates therefrom. A subsidiary object of the invention is to provide a novel gear which may be used in the place of the gapped gears shown in my Patent #1,223,025, such novel gear having a radially displaceable toothed sector of such size that when the cylinder is turned to plating position the sector may be retracted to open the gap and permit a tubular plate to be slid onto or removed from the plate cylinder as described in my said patent; and after the plates are in position and the press is ready for operation the sector may be projected so as to close the gap and produce a complete toothed gear which will remain continually in mesh with the opposed gears during the operation of the machine. While, as such novel gear is practically designed for use in connection with presses as shown in my said pat-ents, the novel gear can be used in various other mechanisms, and the invention is not restricted to any particular location or use of said gear.

I will explain the invention with reference to the accompanying drawings, which illustrate a practical embodiment and application thereof; and summarize in the claims the essentials of the invention and the novel fea-tures and combinations of parts for which protection is desired.

In t-he drawings:

Figure 1 is a diagrammatic end elevation of a plate and impression cylinder of the type shown in my said Patent #1,223,025, and gearing for driving the same, including my novel gear.

Figure 2 is a side view of Figure 1, partly broken away.

Figure 3 is a diagrammatic end elevation of two plate and two impression cylinders suitably intergeared and one of such cylinders having my novel gear] on one end thereof.

Figure A is an enlarged view of the novel gear detached.

Figure 5 is a vertical section of the gear.

Figure 6 is a sectional view on the line 6 6, Figure 5.

Figure 7 is a sectional view on the line 7 7, Figure 5.

Figure 8 is a detail sectional view on the line 8-8, Figure 5, illustrating the pin 3.

As shown in Figures l and 2, each printing couple comprises a plate cylinder P and an impression cylinder I. Preferably the impression cylinder I is twice the diameter of the plate cylinder. In the construction shown in Figs. 1 and 2, each plate cylinder P is adapted to carry tubular plates FX and each plate practically surrounds the circumference of the plate cylinder, except for the one narrow marginal slot, which is adapted to engage a rib on the plate cylinder, substantially as described in my Patent #97 9,919.

Each end of the plate cylinder is journalled in a bearing B which is supported by a narrow neck B, (Fig. l) upon the main frame F or a part attached to the main frame. Said neck B is slightly less in width than the slot in the plate PX, and

the bearing B is slightly less in exterior diameter than the interior diameter of the plate cylinder, so that a tubular plate PX can be slipped endwise onto the cylinder, .over either end thereof and over the bearing B, by turning the cylinder so that the rib thereof registers with the shank B of the adjacent bearing. The plates PX can thus be slipped endwise onto and oil of the cylinder substantially as described in my Patent #979,919 aforesaid.

The plate cylinder P has a gear P2, on each end, which gears do not exceed in over all diameter the diameter of the cylinder. Each of the gears P2 is adapted to mesh with a novel gear 1, gears 1 being mounted on the opposite ends of a shaft S, journalled in the frame F below the shaft P of the cylinder P. These gears 1 take the place of the gapped gears 8C, 8e, shown in my said Patent #1,223,025.

The gears 1 mesh with driving pinions D on a drive shaft D. The pinions D and I are of the same size, so that the plate cylinder makes one rotation for each rotation of the shaft D. The impression cylinder I, mounted on the shaft lf, may be driven by means of a gear I2, meshing with a gear D2, on shaft D. The gear D2 is practically the same size as gear D, and goal l2 twice the diameter of the gear D2, so that the impression cylinder I makes one revolution to each two revolutions of the plate cylinder P.

The gear 1 may be of any desired diameter, and is formed with a radially disposed slot gap 1b in its periphery; and in this gap is fitted a radially movable sector 2, the outer surface of which is curved and toothed 'lo correspond with the curvature .of the teeth on the periphery of the gear; and when this sector is in its normal outermost position (as shown in Figs. 1, 2 and 4) the teeth 2a of the sector form a continuation of the teeth 1a of the gear.

The sector 2 is closely fit-ted in the slot 1"; and is preferably integrally formed with a yoke 2b, which is slidably mounted in a` recess lr in the face of the gear (see Figs. 8 and 4). Said yoke has an opening of larger diameter than the hub le of the gear 1 to permit the yoke to move transversely of the shaft. Said yoke loosely embraces the hub and the opposite sides of the hub are dressed parallel (as indicated at lf Figure 6) to engage the opposed dressed parallel surfaces of the inner sides of the yoke, and guide the yoke.

The yoke acts as al guide and brace for the sector 2; and the yoke 2b carries a pin 1g on its lower end, which pin preferably carries a roller 1h, (Figs. 5 and 7) and this roller is adapted to be engaged by a cam surface 4h on .one side of an arcuate slot or recess in the inner face of a hand wheel 4, (Figs. 5 and 7) which is rotatably mounted upon the reduced end 1k of the hub .of the gear 1. Said hand wheel 4 may be confined on the hub by means of a disk 5 secured by bolts 5fu to the end of the shaft S on. which the gear l is splined.

The recess 1r in the gear 1 permits the yoke 21 to be moved transversely of the shaft S to draw the block 2 inward toward the shaft S or to move the sector 2 outward.

The sector 2 has on its outer face a projecting are shaped rib 2n (Figures 5, 6 and 7) which is adapted to be engaged on its inner side by a projection 4n on the hand wheel 4, when the sector is projected, as shown in Figures 4 and (i.

The hand wheel 4 has a forwardly projecting annular iiange 4s on its front face, the perimeter of which is preferably corrugated to enable the operator to firmly grasp the iiange when he desires to turn the wheel. rPhis hand wheel 4 may be locked in the position shown in Figures 4 and 5 so as to hold sector 2 securely in its outermost position by any suitable devices.

/Vhen in its outermost operative position, the teeth 2a of the sector 2 form a continuation of the teeth 1a of the gear 1; and the sector is supported and held in this operative position and against inward radial movement by the part 2l1 thereof bearing upon the part 4 of wheel 4; and the sector is held against longitudinal play or chatter by the yoke 21 engaging the parts 1f of the wheel hub; and confined between the inner face of the wheel 4 and the outer faceof the gear l.

As a further means of preventing play or chatter of the sector, a friction pin 3 may be inserted in a recess 3 in either end of the sector, and is pressed outward against the adjacent side of the slot 1b, by means of a spring 3b, as indicated in Figures (3 and 8.

rlfhe pin 3 and spring 3" should be inserted in that end of the sector opposite the direction of rotation of the gear; that is, if the gear turned to the right the pin should be at the left hand end of the sector so as to press the block toward the right. If the gear is turned to the left, the pin should be placed at the right hand end of the sector so as to press the sector toward the left.

The sector can be retracted, as stated, by the engagement of the cam surface 4h with the roller 1h. `When the sector is fully rctracted, as indicated in Figure 6, the roller lh will occupy the end of the cam slot 4s as indicated in dotted lines in Figure 7. Then the sector is projected to operative position, the hand wheel is turned in a reverse direction to that indicated by the arrow in Figure 7, whereupon the roller will be engaged by the cam surface 4t of the slot 4S, opposite the face 4, until the sector is projected to the proper posit-ion. Just before the roller 4h clears the cam surface 4t, the part 4n enters under the projection 2, and becomes completely engaged therewith by the time the hand wheel has completed its return movementto the position indicated in full lines in Figure 7.

The sector 2 and the wheel 4 may be locked in the positions shown in Figures 4 and 5 by means of a bolt 6 (Figure 3) slidably mounted in a socket 6a in the disk 5; said bolt 6 is normally projected by a spring 6"; and the bolt is provided with a pin 6c enllO Lesage? 3 N a gaging slots 61 1n the sides. of the socket, speeds. The no-vel gear l 1s shown as as shown in Figure 3. The bolt 6 is adapted to engage a socket lt in a pro-j ection 4V on the under side of flange ls (see Figure 5). In this socket 4F is a. plunger 7 having a stem 7 a projecting bey-ond the periphery of the flange 4S. The Aplun ger 7 is normally pressed inward by a spring 7b of less strength than the spring 6b. On the. outer end of the stem 7a is a button or head 7 d.

When the bolt 6 registers with the socket 4st, it will enter the latter, pushing the plunger 7 outward.

Ilhen it is desired to disengage the bolt, the plunger 7 is pushed inward by pressure on the bottom 7 d until the bolt 6 is clear of the socket llt, whereupon the. hand wheel ll can be turned in the direction of the arrow in Figure 5. lWhen thus turning the wheel, the projection 4l will first be moved out of the path of the projection 2, and then the cam portion lh of the Wheel 4 will engage the roller 1h, and force the latter radially outward thereby moving the yoke 2b so as to draw the block 2 inward to the retracted position shown in dotted lines in Figure 7.

The gears l are so relatively placed on shatt S that when the. sector 2 ot one gear l is engaged with the opposed gear P2, the sector 2 of the other gear l is not in mesh with its opposed gear P2. TWhen it is desired to place the cylinder, at either end,

the gear 1 is turned until the sector 2 is in mesh with the gear P2. The-n the sect-or is retracted as indicated in Figure l, and the plates PX can then be slid endwise onto the cylinder, the lower portion olf the plate passing through the gap left in the gear l by the retraction of the sector 2. After the plates are in position the sector is moved outward into mesh with the gear P2 and thus the. gap is closed. Plat-es can be slipped on o-r taken oit at either end of the cylinder by manipulating the sectors as described. lith this arrangement, during the operation of `the press, there is always a continuous mesh between the gears 1 and the gears P2, except when the plates PX are to be placed on or removed from the cylinder. In my aforesaid patent, no means were provided for iilling gaps in the segmental gears and consequently the cylinder was driven momentarily from opposite ends according to whether the segmental gears were in or out of mesh. In the present invention, when the machine is in operation and the sectors are properly adjusted, there is continuous uniform gearing between the shaft S and the cylinder P.

In Figure 3 I have shown two plate cylinders P, disposed on opposite sides of two impression cylinders I,.I. The cylinders are `provided with intermeshing gears, whereby all the cylinders are caused to rotate in unison and at the same peripheral mounted on one end of one of the impression cylinders, and meshes with a gear T torming one of' a driven train of gears, not shown.

It the cylinders indicated in Figure 3 should be turned until the sector 2a of gear l meshes with the gear on the adjacent cylinder I, and then the sector retracted, the right hand cylinders I and P could be turned without affecting the lett hand cylinders. If the cylinder l Was turned so that the sector 2a meshes with the gear T, and then t-he sector 2 was retracted, the rest of the machine could be run without alecting or rotating the cylinders.

The gear 1 could be put in the place of the gear T; in which case it the gears are turned until the teeth on sector 2 mesh with the cylinder gear and the sector is then retracted, the cylinders could be turned by hand, as desired, while the rest of the press was idle.

It is obvious that if a gear like the gear l be interposed at any point in a train of gearing, or attached to any member to be driven by an opposed gear, that upon turning the gear to a position where the teeth on sector 2 mesh with the opposed gear and then retracting the sector 2, transmission of motion from one gear to the other will be prevented. By using such a gear the necessity for having a slip gear or a clutch can be obviated in many places where a slip gear or clutch is now required. lith such a gear, all the operator has to do when he desires to disconnect the gear is simply to see that the sector 2 is in mesh with the gear it is desired to disengage; and then by disengaging the bolt G from the plate and giving the hand wheel 4 a partial revolution in the proper direction, the sector can be retracted and the gears thrown out of mesh. To return the gear to mesh, all the operator has to do is to give the handwheel 4f a partial revolution in the reverse direction, so as to move the sector 2 to its projected position; in which position it will be locked by the engagement of bolt 6 with the wheel 4.

I claim:

l. A gear having a radial slot; a toothed sec-tor movably mounted in said slot; and a wheel rotatably mounted adjacent the gear having a cam portion adapted to move the sector inward or outward.

2. A gear having a radial slot; a toothed sector mounted to move radially in said slot; and a Wheel rotatably mounted upon the hub of the gear having a cam portion adapted to 'move the sector inward or outward; and means for fastening the wheel in adjusted position.

3. A gear having a radial slot; a toothed sector mounted to move in said slot; and a wheel rotatably mounted adjacent the gear CII having a cam portion adapted to move the sector inward or outward; and a portion adapted to engage the sector and hold it in its projected position.

4. A gear having a radial slot; a toot-hed sector mounted to move radially in said slot; and a wheel rotatably mounted upon the hub of the gear having' a cam portion adapted to cause the sector to move inward or outward; said wheel also having a portion adapted to engage the sector and to hold the latter in its projected position.

5. A gea-r wheel having a peripheral slot; a sector slidably fitted in said slot and having a toothed portion adapted to form a continuation of the toothed portion of the gear when the sector is in its outermost position; a hand wheel rotatably mounted on the gear and having a portion adapted to engage the sector to hold the latter in its projected position and also having a cam portion adapted to cause the projection or the retraction of the sector.

6. In a gear wheel as set forth in claim 5, means for locking the wheel in adjusted position when the sector is outermost.

7. A gear wheel having a peripheral slot or gap; a sector slidably fitted in said gap and having a toot-hed portion adapted to form a continuation of the toothed portion of the gear when the sector is in its outermost position; a hand wheel rotatably mounted on the gear and having a portion adapted to engage the sector to hold the latter in its retracted position, and also having a cam portion adapted to cause the projection or the retraction of the sector; the sector engaging portion of the wheel being so located that the said portion will be disengaged from the sector before the latter is moved inward, and will be engaged with the sector after the latter is moved outward.

S. In a gear wheel as set forth in claim 7, means for retaining the wheel in position relative to the gear; and means for locking the wheel in adjusted position when the sector is outermost.

9. A gear having a radial slot; a toothed sector mounted to move in said slot; a` member connected with said sector; a wheel rotatably mounted adjacent the gea-r and having a cani portion adapted to engage the member on the gear to cause the latter to move the sector either inward or outward.

10. A gear having a radial slot; a toothed sector mounted to move radially in said slot; a yoke connected with said sector and embracing the hub of the gear, a wheel rotatably mounted upon the hub of the gear having a cam portion adapted to engage the yoke on the gear and cause the latter to move the sector inward or outward; and means for fastening the sector while in adj usted position.

1l. A gear having a radial slot; a toothed sector mounted to move in said slot; a yoke connected with said sector within a recess in the face of the gear; and a wheel rotatably mounted adjacent the gear having a cam portion adapted to engage the yoke and cause the latter to move the sector inward or outward; said wheel also having a portion adapted to engage the sector to hold the latter in its projected position.

l2. A gear having a radial slot; a toothed sector mounted to move radially in said slot; a yoke connected with said sector and mounted within a recess in the face of the gear; and embracing the hub of the gear; and a wheel rotatably mounted upon the hub of the gear having a cam portion adapted to engage the yoke and cause the latter to move the sector inward or outward; said wheel also having a portion adapted to engage the sector and to hold the latter in its projected position.

13. A gear wheel having a peripheral slot or gap; a sector slidably fitted in said gap having a toothed portion adapted to form a continuation of the toothed portion of the gear when the sector is in its outermost position; a yoke connected with said sector; said sector having an inwardly projecting rib on the face adjacent the yoke; a hand wheel rotatably mounted on the gear and having a portion adapted to engage the rib on the sector to hold the latter in its retracted position and also having a cani portion adapted to engage the yoke and move the latter to cause the projection or the retraction of the sector; and means for locking the wheel in adjusted position when the sector is outermost.

14. A gear wheel having a peripheral slot or gap; a sector slidably fitted in said gap having a toothed portion adapted to form a continuation of the toothed portion of the gear when the sector is in its outermost position; said sector having a projecting lug on one face; a yoke connected with said sector and movably mounted within a recess in the gear, a hand wheel rotatably mounted on the gear and having a cam portion adapted to engage the lug on the sector to hold the latter in its projected position and also having a cam portion adapted to engage the yoke to move the latter to cause the projection or the retraction of the sector; the lug engaging portion of the wheel being so located that said portion will be disengaged from the lug before the sector is moved inward, and will be engaged with the lug after the sector is moved outward.

l5. A gear wheel having a peripheral slot or gap; a sector slidably fitted in said gap and having a toothed portion adapted to form a continuation of the toothed portion of the gear when the sector is in its outermost position; a yoke connected with said sector, said yoke embracing the hub of the will Mlliatilltii at be i a gear and having its sides slidably fitted to rotatably mounted on the hub of thegear 20 the faces of the huh to guide the yoke; a hand Wheel rotatably mounted on the hub oi' the gear and having a cam portion adapted to engage the yoke to move the latter to cause the projection or the retraction of the sector; means for retaining the Wheel in position on the gear; and means for locking the Wheel when the sector is projected.

16. A gear Wheel having a peripheral slot or gap; a sector slidably lit-ted in said gap and having a toothed portion adapted to form a continuation of the toothed portion of the gear when the sector is in its outermost position; a yoke connected with said sector, said yoke embracing the huh of the gear and having its sides slidaloly fitted to the faces of the huh to guide the yoke; said sector having a projecting lug; a hand Wheel and having a portion adapted to engage the lug on the sector to hold the latter in its projected position, and also having a cam portion adapted to engage the yoke to move the latter to cause the projection or the retraction of the sector; the lug engaging portion of the Wheel heilig so located that the lug engaging portion Will he disengaged from the lug before the sector is moved in- Ward, and will he engaged with the lug after the sector is moved outward.

17. In a gear Wheel as set forth in claim 16, means for retaining the Wheel in position on the gear; and means for locking the Wheel when the sector is projected.

In testimony that I claim the foregoing as my own, I atiix my signature.

HENRY F. BECHMAN.

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