USRE12262E - Reissued aug - Google Patents

Description

-' REI'SSUED AUG. 23,1904.

B HALL MECHANICAL MOVEMENT.

APPLICATION FILED MAY 2, 1904.

RBissUED AUG. 23, 1904.

B. HALL.

MECHANICAL MOVEMENT.

APPLICATION FILED HAY 2, 1904.

2 SHEETS-SHEET 2.

Reissued August 23, 1904.

BICKNELL HALL, OF TAUNTON, MASSACHUSETTS, ASSIGNOR TO THE HUBER HODGMAN PRINTING PRESS COMPANY, OF TAUNTON,

MASSACHUSETTS, A CORPORATION OFMASSALCHUSETTS.

MECHANICAL MOVEMENT.

SPECIFICATION forming part of Reis'sued Letters/Patent No. 12,262, dated August 23, 1904.

Original No. 763,389, dated March 1, 1904. Application for reissue filed May 2, 1904. Serial Not 206,076.

' tion, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts;

1 This invention relates to a mechanical move- I I'nent'iwhich is particularly adapted for use in that type of printingwpresses in 'which the form is carried by a bed having a reciprocating movement under the impression-cylinder,

the bed being driven during the greater por-v tion of its stroke by a rotating gear which a with brackets a, on which the bed D, carry meshes altefiiately with two parallel racks secured to the bed, a reversing device controlling the bed at each end of the stroke and reversing its motion gradually while at high speed.

The invention in particular relates to the mechanismfor shifting the engagement of the rotating gear with the parallel racks secured to the bed, means for driving the gear at a uniform speed when in mesh with the, racks, and to the construction of the parts, whereby strength and rigidity are assured.

Figure 1 is a vertical elevation, chiefly in cross-section. of a portion of a well-known form of printing-press, showing parts relating to this invention. Fig. 2 is a plan view of a portion of the mechanism shown in Fig. 1. Fig. 3 is a side elevation of a portion of 'the' mechanism shown in Fig. 1, illustrating the parts with the rotating gear in mesh with the upper rack. Fig. 4 is a cross-section corresponding to Fig. 3, but showing the rotating gear in mesh with the lower rack. I Fig.

5 is a side elevation, and Fig. 6 a plan view, of.

the unison-ring, hereinafter referred to.

A represents the standard or main frame of the printing-press, in which is journaled the bearings B of the usual impressiomcylinder C, and this standard or frame is provided ing the form, moves back and forth, antifric- I tion-rolls 5 being interposed between the bed and the brackets a.

The bearings of the impression cylinderare arranged to permit of its being slightly raised during the non-printing stroke of thebed carryingthe form, and the impression-cylinder makes two revolutions to each complete stroke of the bed; but the operation of all these parts is familiar and need not be describedherein.

The bed D is provided with two verticallyalined parallel racks E E, the upper of which,

11, is attached directly to the bed and the lower of which, E, is attached to the bed by means of a depending bracket E The 'main shaft F and the auxiliary shaft Gr are suitably journaled in the main frame A.

A large gear H is mounted on one end of the auxiliary shaft G, and this shaft is driven by means of a pinion it, mounted on the main shaft F and intermeshingwith thegear H. A gear K on the opposite end of the auxiliary shaft G, intermeshing with the gear K on the impression-cylind er, serves to revolve the impression-cylinder.

A crank-pin H carried by the gear H, usually known as the reversing-gear, operates in any well-known manner, as with vertical shoes (not shown) carried by the hanger E to reverse the movement of the bed D at each end of its stroke.

The bed-driving gear L is mounted between c I a I I a and in line w1th the parallel racks E L upon an eccentric-sleeve M. which eccentric-sleeve M is in turn mounted upon a rigid bearing N,

formed on the main frame A eccentric to the auxiliary shaft Gr. The eccentric-sleeve M forms the bearing upon which the bed-driving gear L is journaled, and. it is provided with an arm M by means of which it may be shifted so as to cause the engagement of the bed-driving gearL either with the upper rack E or the lower rack E, as desired in the movement of the bed; As a means for adjusting this eccentric-sleeve M at the proper time-via,

at the end of each reciprocation-to cause the bed-driving gear L to mesh with the proper rack E E the arm M is shown connected by 3 P 'and receives its motion from a pinion R on ring S (shown in Figs. 5 and 6) is provided alever O to a lever O, pivoted at O to a stationary part of the machine, the said lever'being operated through a stud O thereon and scam-groove P in one faceof the gear P. The gearP is mounted on an auxiliary shaft the main shaft-F. The bed-driving gear from the reversing-gear H, through what is herein termed a' unison-ring. The unison on oneside with diametrically-alined projec-v tions S', fitting. into diametrically-alined slots or grooves L in the bed-driving gear, and on the opposite side with projections'S alined diametrically, but at a right angle to the line.

of the projections S and fitting into corre sponding slots or grooves diametrically ar- The operation of the parts hereinbefore described is apparent. When the press is in operation and during that reciprocation of the bed when the printing takes place. the beddriving gear L is in mesh with the upper rack E and is driven at a uniform speed, the reversing-gear H, the unison-gear S, and the bed-driving gear L being then in concentric position.

prising the stud H of the reversing-gear H comes into action to reverse the bed, the ec-v centric-sleeve M is shifted, through the agency of the cam P and other parts hereinbefore described, from the position shown in Fig. 3 to the position shown in Fig. 4, thus causing the bed-driving gearL to be lowered out of engagement with the upper rack E and into engagement with the lower rack E. During the return reciprocation of the bed it will be seen that the unison-ring occupies a varying eccentric position, owing to the fact that the shifting of the bed-driving gear L has rendered it eccentric to the reversing-gear H, which is the driving member; but the uniform speed of the bed-driving gear L is maintained by reason of the gradual shifting of the unison-ring S to compensate for its eccentricity, the projections S sliding in the grooves L in the bed-driving gear and the projections S sliding-in the grooves in the bed-reversing gear H. VV-hen'the end of the lower rack E is reached, the reversing *mechanism again comes into action to reverse the bed 1). The

L receives its motion When the end of the rack .13] is reached and the reversing mechanism comcaml and the parts above described, is again shifted from the'position shown in Fig. 4 to that shown in Fig. 3.

, From the foregoing description it will be eccentric-sleeve M, throughthe agency ofthe seen-that the construction of the parts is such.

that thebed driving gearisfirinly and rigidly supported upon its bearing whether-in its upper or lower rack-eng agingpositionand that its uniformity of motion is secured in-bothpositions. This is accomplished .without the shift- 7 5 ing or movingof any of the shafts'fl of the printing-press and h y-moving the gear itself only tothe extent to disengage it .from ;the'

teeth of the rack. '-Hitherto it has be nstomary either to shift .the entireshaft and 8c other connected mechanism'with the bed dmv ing gear-or else to move thegear itself uponthe shaft laterally. the racks being placed out of vertical aline'ment. In the former case the construction is necessarily such as to prevent 8 5 I rigidity, and'i'nthe latter-case comparativelyextensive'movement is necessary. in order to disengage the. gear from the rack-lateral-lyL It will be noted that the rigid bearingN ex-.

tends within the plane of the racksjE E and the cooperating gear L and that the eccentricsleeve M also extends within the same plane,'. making acompact, rigid, andstrong construction,-'so that the-force of reciprocating the bed acts 'directly against the rigid bearing and '95 there is no tendency to deflection of the parts. 'While theIreve rsing-gear has been shown as the drivingmember for operating the beddriving gear, it is evident that any other .ro-

tary member may be employed in lieu thereof,

the unison-ring being connected with such rotating member and the bed-driving gear'in the manner above specified.

While the unison-ring is herein shownand described as consisting of a ring-shaped part with projections on opposite sides, it isevident that the projections themselves are the *operr ative parts of the device, and all that is essential to this feature is that the four projections shall be fixed in position with respect to each other. This obviously maybe secured in otherways than by the ring-shaped connection illustrated.

While the rigid bearing N and the eccentricsleeve M are important features of the invention, it is obvious that the unisoirring construction whereby uniform rotation of .the g ar from the rotary driving member is secured does not depend upon the particular support or bearing for the gear or the means for shifting-the position of the gear.

Having. described my invention, what I claim as new," and desire to secure; by Letters Patent, is p 1 1. Reciprocating bed -motion comprising bed-racks, a gear located in the same plane' with said racks, a stationary bearing for said gear extending within the plane of said racks versely of said bearing to engage alternately the bed-racks, means for giving a uniform rotation to said gear when in engagement with either rack.

3, Reciprocating bed-motion comprising bed-racks, a gear located in the same plane with said racks, a stationary bearing for said gear, an eccentric-sleeve between said bearing and said gear, the said stationary bearing and eccentric-sleeve extending within the plane of said racks and gear, means for shifting said eccentric whereby said gear is shifted transversely of said bearing to engage alternately the bed-racks.

4. Reciprocating bed motion comprising bed-racks, a gear located in the same plane with said racks, a stationary bearing for said gear, an eccentric-sleeve between said bearing and said gear, the said stationary bearing and eccentric-sleeve extending within the plane of said racks and gear, means for shifting said eccentric whereby said gear is shifted transversely of said bearing to engage alternately the bed-racks, means for giving a uniform rotat-ion to said gear when in engagement with either rack; i

5. Reciprocating bed-motion comprising bed-racks, a gear located in the same plane with said racks, a stationary bearing for said gear, means for shifting said gear transversely 'to said bearing to engage alternately the bedracks, a rotating member concentric with said gear when in one of its rack-engaging positions, connections between said rotating member and said gear whereby uniform rotation is imparted to said gear when in engagement with either rack.

6. Reciprocating bed motion comprising bed-racks, a gear located in the same plane vwith said racks, a stationary bearing for said gear, means for shifting said gear transversely to said bearing to engage alternately the bedracks, ,a rotating member concentric with said gear when in one of its rack-engaging positions, a unison ring having diametricallyalined projections on one face in diametricallymovable engagement with said rotating member, perpendicularly-arranged diametricallyalined projections on the other face in diametrically-movable engagement with said gear,

whereby uniform rotation isimparted to said gear when in engagement with either rack.

7. Reciprocating bed-motion comprising bed-racks, a gear located in the same plane with said racks, a, stationary bearing for said gear extending within the plane of said racks and gear, means for shifting said gear transversely to said bearing to engage alternately the bed-racks, a rotatingmember, connections between said rotating member and said gear whereby uniform rotationis imparted to said gear when in engagement with either rack.

8. Reciprocating bed-,motion comprising bed-racks, a gear located in the same plane with said racks, a stationary bearing for said gear, means for shifting said gear transversely to said bearing to engage alternately the bedracks, a rotating member, a unison-ring having diametrically-alined projections on one face in diametrically movable engagement with said rotating member, perpendicularlyarranged diametrically-alined projections on the other face in diametrically-movable engagement with said gear, whereby uniform rotation is imparted to said gear when in engagement with either rack.

9. Reciprocating bed-motioncomprising bed-racks, a gear located in the same plane with said racks, a rotating member, a stationary bearing for said gear eccentric to said rotating member, an eccentric-sleeve between said bearing and said gear so arranged that said gear will be concentric to said rotating member when in one of its rack-engaging po-f sitions,means for shifting said eccentric-sleeve whereby said gear is shifted transverselyofsaid bearing to engage alternately the bedracks, means for givinga uniform rotation to said gear when in engagement with either rack.

10. Reciprocating bed-motion comprising bed-racks, a gear located in the same plane with said racks, a rotating member, a stationary bearing for said gear eccentric to said rotating member, an eccentric-sleeve between said bearing and said gear so arranged that said gear will be concentric to said rotating member when in one of its rack-engaging po sitions, means for shifting said eccentric-sleeve whereby said gear is shifted transversely of said bearing to engage alternately the bfid",

racks, means connecting said rotating member and said gear whereby when the rotating member is rotated uniformly a uniform rotation is given to said gear when in engagement with either rack.

11L Reciprocating bed-motion comprising bed-racks, a gear located in the same plane with said racks, means for shifting said gear transversely to engage alternately the bedracks, a rotating member concentric with said gear when in one of its rack-engaging positions, a unison ring having diametricallyalined projections'oii one face in diametricallymovable engagement with said rotating member, perpendicularly-arranged diametricallyalined projections on the other face in diametrically-movable engagement with said gear, whereby uniform rotation is imparted to said gear when in engagement with either rack.

12. Reciprocating bed-motion Comprising bed-racks, a gear located injthe same plane with said racks, a hearing for said gear ex tending within the plane of said racks and gear, means for shifting said gear transversely to engage alternately the bed-racks, a rotating member, connections between said rotating member and said gear whereby uniform rotation is imparted to said gear when in engagement with either rack.

13. Reciprocating bed-motion comprising bed-racks, a gear located in thesame plane with said racks, means for shifting said gear 14. Reciprocating bed-motion comprising bed-racks, a gear located between the racks and in the plane thereof, means for shifting said gear transversely to engage alternately the bed-racks, a rotating member at one side of the said gear, lateral connecting means movable transversely to said gear and said rotating member between said rotating member and said gear whereby uniform rotation is imparted to said gear when in engagement with either rack.

15. In a driving motion of the character described, a driving member, a driven member opposed laterally thereto, means for intermittently offsetting the axes of said driving and driven members one from the other, connecting means movable transversely to said driving member and said driven member between said driving and driven members for driving the latter from the former at a uniform speed whatever he the relative offset position of their respective axes.

16. In a driving motion of the character described, a driving member, a driven member opposed laterally thereto, means for intermittently offsetting the axis of one of said members from the other, connecting means movable transversely to said driving member and said driven member between and in positive engagement With said members to drive one from the other in any relatively offset position of their respective axes at a uniform speed.

In testimony whereof I have signed my name to this specification in the presence of two sub scribing Witnesses.

BICKNELL HALL. Witnesses:

WILLIS K. HODGMAN, FREDK. M. A'rwooi).

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