US1536093A

US1536093A - Printing press

Info

Publication number: US1536093A
Application number: US686071A
Authority: US
Inventors: Horace W Hacker
Original assignee: HACKER Manufacturing CO
Current assignee: HACKER Manufacturing CO
Priority date: 1924-01-14
Filing date: 1924-01-14
Publication date: 1925-05-05
Anticipated expiration: 1942-05-05

Description

May 5', 1925.

' 1,536,093 H. W. HACKER PRINTING PRESS Filed Jan. 14, 1924 2 Sheets-Sheet l y Zz' @6666 2252 May 5, 1925.

H. w. HAQKER PRINTING PRESS med Jan. 14. 1924 2 Sheets-Sheet 2 Patented May 5, 1925.

HORACE OFFICE.

W. I`IAC`I II1IILI CHICAGO, ILLINOIS, ASSIGNOR TO HGKER MANUFCTUR ING CO., OF CHICAGO, ILLINOIS,l A CORPORATION OF ILLINOIS.

PRINTING PRESS.

Application filed January 14, 1924, Serial No. 686,071.

fo all Lv/m t may concern: E y

Be it known that I, HORACE IV. HACKER, citizen of the United States, residing at Chicago,inthe county of Cook and State of Illinois, have invented a certain new and E useful In'ipfrovement in Printing Presses, of which the following 1s a full, clear, concise,

CII

and exact description. v

My invention relates to printing presses employing cooperating printing members with which bearers are assembled that cooperate in the printing and with which `printing press members intermeshing gear elements are assembled to cause'the restoration of the printing press members to nonprinting positions after the printing operation. i

The invention has for its object the provision of means whereby the gearelements are prevented from disturbing the cooperative relation of the bearers in the printing operation, whereby slurring is avoided. This diificulty was due to the non-uniformity in the spacing of the sides of the gear teeth that have meshing engagement during the printing operation, this non-uniformity obviously causing slippage between the functioning bearers with the attendant slurring. n

In carrying out my invention permit one of the gear elements to move whenever any irregularity in the gear teeth spacing is encountered during the printing operation.

My invention has been of particular service in connection with presses employing flat beds and cooperating lprinting cylinders,

one such member of a'press being provided with a bearer that serves to operate the complemental bearer and the printing press member coupled with the latter. Mechanism is employed for bringing these bearers into and out of cooperating relation. A spur gear may be coupled with the cylinder to be coaxial therewith and a coi'i'iplemental rack, in mesh with this gear, `may be carried by the bed. This rack is-desirablyformed in two sections, one substantially in fixed connection with the bed and inmesh during the non1 )rinting stroke preferably by being arranged along the nonprinting area of the bed, and the other being assembled with the bed to be movable during the printing stroke preferably by being arranged along the printing area thereof. The listed mem ber of the rack serves to bring the members of the press into exact predetermined relation at the commencement of the actual printing operation. During the printing, the movable rack section permits the bearers to remain in firm and non-slipping engagement. After the printing operation, the bearers are separated and the movable vrack section then functions tomove the bed in a nonprinting stroke, the fixed rack section completing the nonprinting stroke of the bed. When the movable rack section is out lof mesh with the gear upon the cylinder a spring or other means serves to move it in a normal intertoothed relation with the fixed rack section, this spring `permitting the movement of the movable rack section during the printing stroke for the purpose set forth.

The invention will be more fully eX- plained in connection with the accompanying drawings in which Fig. l is a side view, with parts broken away, illustrating a proof press equipped in accordance with my invention, the bearers being in enga-gement preparatory to the printing operation to ensue during the movement of the bed to the right as illustrated in this figure; Fig.

2 is a plan view of the bed portion of the press with parts broken away; F ig. 3 is an enlarged side view Online 3 3 of F ig. 2;

I" ig. 4 is a view similar to Fig. 1 but illustrating. the press at the conclusion of the printing stroke and with the bearers separated preparatory to the nonprinting stroke of the bed;and Fig. 5 is a sectional View on line 5-5 of Fig.

Like parts are indicated by simila-rcharacters of reference throughout the different figures.v

In the press illustrated, one member is in the form of al cylinder 1 and a complemental member is in the form of a flat bed 2 ythough vit is to be understood that. the invention is not to beI limited to any particular form o-f .press The fiat bed 2 may contain al printing form as illustrated at 3 in Figs. Q and 5.

`The cylinder l is provided with a pair of bearers 4;, one at each end of the cylinder. Complemental bearers are provided upon the `dat bed. Mechanism is en'iployed for bringing the bearers l into and out of engagement with their complements In the proof press illustrated,4 this mechanism is operated by the hand crank 7 which is emn ployed to turn the printing;` cylinder 1. As illustrated niost clearly in. Fig. 5, the crank shatt- 8 carries a collar 9 fixed thereon. rlhis collar has a tooth 9 which is ene'ageable with a tooth 10 ot the collar 10 loose upon the shaft 8. The collar 10 has another tooth 102 which is engage-able with the tooth 11 upon the collar 11 loose upon the sha-ft. lhile the crank is beingturned about three and one halt tiines in one direction. to print, or in the opposite direction to restore the printing press to nonprinting;` positions, the collars 9, 10 and 11 are being` brought into relation to operate a4 crank 12 carried upon the collar 11. The. crank 12 is, during this interval, thus operated to swing;v the rocker arin 13 in one direction or the otheraccording tothe direction ot inoveiuent et the crank 7. The rocker arin 13 is connected with another rocker arm 1l by means oit a link 15. A link 16 joins the rocker arin 14n with the cranks 1T. Thus, when the arin 1.3 is inoved in the nianner described, the arin 14 and the cranks 17 arek inoved siniultaneously therewith. Each ot the elements 13 and 17 is carried upon one of the three shafts 18 individual thereto, each' shaft being; journaled its ends iu the bearings 19, as illustrated inost clearly in Fig. 5. Each shatt 1S carries acylindrical eccentric 20 upon which a roller 21 is journaled. The three rollers 21 carry the bed which has rail portions bearing upon the annular flange portions 2B ot' the rollers. Then the cylinder is in thatportion o't its turningY movement which completes the movement ot the bed in its printine; direction. the. collars 9, 'ttl and 11 cooperate to extend the crowns ort the eccent-rics horizontally whereby the bed is lowered and the bearersare separated, Fig'. 1t. 1'hen the bed is in the tinal portion ot its nonprinting stroke, due to the reversed rotation ol the lininting cylinder, the collars 9, l0 and 11 again cooperate. to adjust the eccentrics which arc consequently placed with their crowns umierinost, to raise the bed vand engage the bearers. lhe hed and cylinder are geared together in order that the bed may be moved` in a nonprintinpl direction and nia-y be adjusted to a Vfixed point at the eonunenceinent ot the printinel operation which is to be effected by the cooperation ot'V the bearers. The gearing illustrated Ytor this purpose includes a spur gear Q4: tixed upon and coaxial with the printing' cylinder 1 and a rack assembled. with the bed and comprising;y two aligned sections Q5 and Q6 placed along the bed and each adapted to have meshing engagement with the spur `gear. The section 26 is held in fixed relation with the bed by the bolts 27, this rack section 26 beinglocated `along the nonprinting area. of the bed. The bolts 27 are screwed into the rack section Q5 and serve to holdthis rack section against the top acc ot the bed. The shanks ot the bolts 27 pass through elongated openings 28 in the bed, whereby the rack section Q5 is permitted to inove alongthe bed at the. printing area thereof. A pin 29 is carried by the rack section and is in sliding engorgement with the adjacent; end ot the rack section 2o. gt coiled spring- 39 is housed within the rack section 2G and presses upon the pin 29 which has a shoulder engaging' the rack section whereby the spring` is enabled to move the rack section 25 to bringY its teeth into proper intertoothed relation with the teeth ot the rack section 26, the n'ioveinent etiected bv the spring beingY limited by the abutment 2V. rllhis result occurs when the rack scction 25 is n'ioved out ot: inesh with th(` gear 24; in the nonprinting stroke.. rthe torni having been .inked by any suitable inl-ting); mechanism, such as that indicated at 31 in Fig. 1, the bed is moved to the right in its printing stroke, the tired rack setlon 26 establishing a predetermined relative position ot the bearers when thc rear 2t leaves the rack section 26 and enters into engagelnent with the movable rack section 25. Sonie slight sliding` movement ot' one set ot bearers upon the other may `occur while the gear 2-1 is in inesh with the rack section QG but inasmuch this rack portion is not coextensive with any portion ot the prii 'ingr area, the slippage between the two sets ot bearers dui-ineY this port-ion o't the operation ot the press causes no harurtul results. The fixed rack section in conjunction with the spring ltl, establishes a de-tinite location tor the comniencen'ient ot" the printing' operation, the spring` imsitioningr the rack section 25 against the abutment 25. The two sets ot con'iplen'iental bearers,y being; now in engagement, cause the printing' operation to ensue irrespective ot the rack and gear, the rack section 25 moving as required to permit the bearers unen the cylinder to drive the bearers upon the bed without the aid or interference ot the rack and gear. Td'hen the bed is finishingits printing strolfe it is lowered, in a manner hitherto described, to break the printing` couple between the c vlinder and bed. then the bed has been thus loweredfthe now reversely rotated e'ear 241 causes a return stroke ot the bed while the bearers are in separated relation. Dm'- ine the tinal portion otthis stroke, the printing; bed is raised in the manner lescrilafl` preparatory to another printing); operation.

lt is obvious that changes niajv be made without departing 'trom the spirit .it mi' invention.

lflavine' thus described my invention l claim as new and desire, to secure b v Letters ldatent the 'following 1. ln a printing); press.. with the printingcylinder the combination thereof; ot a reweones ciprocable flat bed cooperating with the cylinder in printing; bearers upon the cylinder and bed, one serving to operate the other and the printing press member coupled withit,

in the 11n-inting operation; mechanism for bringing said bearers into and out of cooperative relation; a gear coupled with the cylinder; a rack in mesh with the gear and 'formed in two sections, one section being substantially in lixed connection with the bed and in mesh during'the nonprinting' stroke, and the other section being assembled with the bed to be movable and in mesh duroperative relation; a gear coupled with the cylinder; a rack in mesh with the gear and formed in two sections, one section being' substantially in fixed connection with the bed and in mesh during the nonprintingi` stroke, and the other section being assembled with the bed to be movable and in mesh dur'- ing the printing stroke; and automatic means Ytor restoring' the movable rack section into normal relation with its complement when out o't mesh with the gear.

3. In a` printing press, the combination with the printing cylinder thereof: of a reciprocable Hat bed cooperating with the cylinder in printing; bearers upon the cyliinler and bed, one serving to operate the other and the print-ing press member coupled with it, inthe printing operation mechanism for bringing' said bearers into and out ot cooperative` relation; a gear coupled with the cylinder; a rack in mesh with the gear and itorn'ied in two sections, one section being substantially in iixed connection with the bed and in meshduring the nonprinting` stroke, and the other section being' assembled with the bed to be movable and in mesh during' the printing' stroke; and means t'or restoring' the movable rack section into normal relation with its complement when out oi" mesh with the gear.`

Lt. Vln a. printing press, the combination with the printing' cylinder thereof; o'l a reciprocable Hat bed cooperating with the eylinder in printing; bearers upon the ycylinder and bed, one serving to operate the other and the printing press member coupled with it, in the printing' operation; a gear coupled with the cylinder; a rack in mesh with the `rear and formed in two sections, one section being substantially in `lined connection with the bed and in mesh duringgl the non` printing' stroke `and the other section being assembled with the bed to be movable and in mesh during' the print-ing' stroke; and a springbi"` for restoring the nioif'able rack section into normal relation with its complement when out oit mesh with the gear.

5. In a printing' press, the con'ibination with the printingl cylinder thereo'l; of a recipro'cable itlat bed cooi'ierating with the cylinder in n'inting; bearers upon the ycylinder and bed, one serving' to operate the other and the printing press member coupled with it, in the printing operation; a gear coupled with the cylinder; a rack in. mesh with the gear and formed in two sections, one section being substantially in iii d connection with the bed and in mesh during the nonprinting stroke, and the other section being a embled with the bed to be movable and in mesh during the printing stroke; and automatic means for restoring' the movable racl section into normal relation with its complement when out of mesh with the gear.

t3. In a printing' press, the combination with the printing' cylinder thereof; ot a reciprocable flat bed cooperating with the cylinder in printing; bearers uponthe cylinder and bed, one serving to operate the other and the printing press member coupled with it, in the printing' operation; a gear coupled with the cylinder; a. rack in mesh with the gear and formed in two sections, one section being substantially in lined connection with the bed and in mesh durinp; the nonin'intingi' stroke, and the other section be: j 'as-senibleclv with the bed to be movable and i mesh during the lin'intinp; stroke; and means ttor restoring the movable rack section into normal relation with. its complement when out oi" mesh with the gear. i

'i'. In a printing press, the combination with one member there-ot' in the t'orm ot a printing,` cylinder; ot ay second member inthe form ot a reciprocable lat bed cooperating` with the cylinder in" printing; bearers upon thecylinder and bed, one serving` to opera-te the other and theprinting press member coupled with it, in the printing` operation; n'iechanism. -for bringing said bearers into and out ot cooperative relation; a gear' element coupled with one member; a complemental gear element coupled with the other mem* bei' and in the Ytorni o'tf arack in mesh with the aforesaid Lrear element, one ot said gea/r elen'ients being 'formed in two sections, one section being substantially in .tixed connection with oneotI the aforesaid in'intiug press members and in mesh (hiringl the nonprint ing stroke, and the other section being assembled with this printing press member to be movable and in mesh during the printing' stroke; and a spring :for restoring the movableg'ear element section into normal relation with itscomplement when out of mesh.

S. In a printing press, the combination with one member thereof in the form of a printing cylinder; of a second member in the form of a reciprocable flat bed cooperating with the cylinder in printing; bearers upon the cylinder and bed, one serving to operate the. other and the printing press member coupled with it, in the printing operation; mechanism for bringing said bearers into and out of cooperative relation; a gear element coupled with one member; a complemental gear element coupled with the other element and in the form of a rack in mesh with the aforesaid gear element; one of said gear elements being formed in two seetions, one section being substantially in fixed connection with one of the aforesaid printing press members and in mesh during the nonprinting stroke7 and the other section being assembled with this printing press member to be movable and in mesh during the printing stroke; and automa-tic means for restoring the movable gear element section into normal relation with its complement when out of mesh.

9. In a printing press, the combination with one member thereof in the form of a printing cylinder; of a second member in the form of a reciprocable fiat bed cooperating with the cylinder in printing; bearers upon` the cylinder and bed, one serving to operate the other and the printing press member coupled with it; in the printing` operation; mechanism for bringing said bearers into and out of cooperative relation; a gear element coupled with one member; a complemental gear element coupled with the other member and in the form of a rack in mesh with the aforesaid gear element; one of said gear elements being formed in two sectionsfone section being substantially in fixed connection with one of the aforesaid printing press members and in mesh during the nonprinting stroke, and the other section being assembled with this printing press member to be movable and in mesh during the printing stroke; and means for restoring the movable gear element section into normal relation with is complement when out of mesh.

10. In a printing press; the combination with one member thereof in the form of a printing cylinder; of a second member in the form of a reciprocable fiat bed cooperating with the cylinder in printing; bearers upon the cylinder and bed; one serving to operate the other and the printing press `member coupled with it in the printing ope ation; a gear element coupled with one member; a con'iplemental gear element coupled with the other member and in the form of a rack in mesh with the aforesaid gear element7 one of said gear elements being formed in two sections7 one section being substantially in .lined connection with one of the aforesaid printing press members and in mesh during the nonprinting stroke, and the other section being assembled with this printing press member to be movable and in mesh during the printingl stroke; and a spring for restoring the movable gear element section into normal relation with its complement when out of mesh.

ll. In a printing press; the combination with one member thereof in the form of a printing cylinder; of a second member in the form of a reciprocable flat bed coo ierat'ing with the cylinder in printing; bearers upon the cylinder and bed, one serving to operate the other and the printing press member coupled with it; in the printing operation; a oear element coupled with one member; a complen'iental gear element in the form of a rack coupled with the other member and in mesh with the aforesaid gear element; one of said gear elements being formed in two sections; one section being substantially in fixed connection with one of the aforesaid printing press members and in mesh during the nonprinting stroke, and

the other section being assembled with this printing press member to be movable and in mesh during the printing stroke; and automatic means for restoring the movable gear element section into normal relation with its '7 complement when out of mesh.

l2. In a printing press; the combination with one member thereof in the form of a printing cylinder; of a second member in the form of a reciprocable flat bed cooperating with the cylinder in printing; bearers upon the cylinder and bed, one serving to operate the other and the printing press member coupled with it; in the printing operation; a gear element coupled with one member; a eomplemental gear element iu the form of a rack coupled with the other member and in mesh with the aforesaid gear element; one of said gear elements being formed in two sections; one section being substantially in fixed connection with one of the aforesaid printing press members and in mesh during the nonprinting stroke; and the other section being assembled with this printing press member to be movable and in mesh during the printing stroke; and means for restoring the movable gear ele,- ment section into normal relation with its complement when out of mesh.

13. In a printing press, the con'ibination with two complemcntal printing members thereof; of bearers upon said press mem bers, one serving to operate the other and the printing press member coupled with it; in the printing operation; mechanism for bringing said bea ars into and out of cooperative relation; a gear element coupled with one member; a complemental gear element coupled with the other member and in mesh with the aforesaid gear element; one

(itl

assente oft said gear elements'being formed in two sections, one section being substantially`` in fixed connection with one` of the aforesaid printing press members and in meshduring the nonprinting stroke, and the other section being assembled with this printing press member to be movable and in mesh during the printing stroke; and a spring 'l'or restoring the movable gear elenjient section into normal relation with its complement when out of mesh.

lll. In a printing press, the combination with two complemental printing members thereof; ot bearers upon said press members, one serving to operate the other and the printing press member coupled with it, in t-he printing operation; mechanism ior bringing said bearers into and out of cooperative relation; a gear element coupled with one member; a complemental gear ele-v ment coupled with the other member and in mesh with the aforesaid gear element, one of said gear elements being 'formed in two sections one section being substantially m fixed connection with one ol the aforesaid printing press members and in mesh during tlienonprinting stroke, `and the other section being assembled with this printingr press member to be movable and in mesh during the printing stroke; and automatic means i'or restoring` the movable gear element sect-ion into normal relation with its complement when out oi' mesh.

l5. In a printing press, the combination with two complemental printing members thereof; of bearers upon said press members, one serving to operate the other and the printing press member coupled with it., in the printing operation; mechanism for bringing said bearers into and out ot cooperative relation; a gear element coupled with one member; a complemental gear clement coupled with the other member and `in mesh `with the aforesaid gear element, one oi Said gear elements being `formed in two sections, one section being substantially lin tired connection with one ot the aforesaid printing press members and in mesh during` the nonprinting stroke, and theother section being assembled with this printing press member to be movable and in mesh during the printing stroke; and means for restoring the movable gear element section into normal relation with its complement when out ol mesh.

`IG. In a printing press, the combination with two eomplemental printing members thereof; of bearers upon said press members, one serving to operate the other and the printing press member coupled with it in the printing operation; a gear element coupled with one member: a. eomplemental gear element coupled with the other meinber and in mesh with the aforesaid gear element, one ot said gear elements being formed in two sections, one section` being substantially in lined connection with one of the aforesaid printing press members and in mesh during the nonprinting stroke, andthe other section being assembled with this printing" press member to be movable and in mesh during the printing stroke; and a spring for restoring the movable gear element section into normal relation with its complement when out ot mesh.

17. In a printing press, the combination with two complemental printing members thereof, ot bearers upon said press members, one serving to operate the other and the printing press member coupled with it, in the printing operation; a gear element eoupled with one member; a complemental gear element coupled with the other member and in mesh with the laforesaid gear element, one of saidgear elements being :formed in two sections, one section being substantially in .lined connection with one of the aforon said printing press members and in mesh during the nonprinting stroke, and the other section being assembled with this printing press member to be movable and in mesh during the printing stroke; and automatic means for restoring the movable gear element section into normal relation with its con'iplement when out ot mesh.

18. In a printing press, the combination with two eomplemental printing members thereof; o' bearers upon said press members, one serving to operate the other and the printing press member coupled with it, in the printing operation; a gear element coupled with one member; a complemental gear element coupled with the other member and in mesh with the attore;l

said gear element, one ol said gearelements being' formed in two sections, one section being substantially in fixed connection with one of the aforesaid printing press members and in mesh during the nonprinting stroke, and the other section being assem- `bled with this printing press member to be movable and in mesh during the printing stroke; and means ior restoring the mmable gear element section into normal relation with its complement when out of mesh.

19. In a printing press, the combination with two complemental printing members thereof; of bearers upon said press memmental gear 'element coupled with the other 10 member and in mesh with the aforesaid gear element during the printing' stroke and movable While in mesh.

In Witness whereof, I hereunto subscribe my name this 9th clay of January, A. I). 15

HORACE IV. HACKER.