US996902A - Offset mechanism for printing-machines. - Google Patents

Offset mechanism for printing-machines. Download PDF

Info

Publication number
US996902A
US996902A US43412908A US1908434129A US996902A US 996902 A US996902 A US 996902A US 43412908 A US43412908 A US 43412908A US 1908434129 A US1908434129 A US 1908434129A US 996902 A US996902 A US 996902A
Authority
US
United States
Prior art keywords
journal
tension
cap
tympan
spring
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US43412908A
Inventor
Howard M Barber
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CB Cottrell and Sons Co
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to US43412908A priority Critical patent/US996902A/en
Application granted granted Critical
Publication of US996902A publication Critical patent/US996902A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/02—Conveying or guiding webs through presses or machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C71/00—After-treatment of articles without altering their shape; Apparatus therefor
    • B29C71/0009—After-treatment of articles without altering their shape; Apparatus therefor using liquids, e.g. solvents, swelling agents

Definitions

  • rrn sA'r ran'r are HOWARD M. BARBER, OF STONINGTON, CONNECTICUT, ASSIGNOR T0 C. B. COTTRELL & SONS COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW JERSEY.
  • My invention relates to an improvement in offset mechanism for printing machines and has for its object to provide a tension adjusting device for the shifting tympan supply roller whereby the tension of the roller may be accurately adjusted.
  • Figure 1 represents an end view of a portion of an impression cylinder with my improved tension adjusting device for the shifting tympan supply roller applied thereto, certain of the parts being broken away to more clearly show the partsbeneath them;
  • Fig. 2 is a detail transverse section through a portion of the impression cylinder;
  • Fig. 3 is a view in side elevaton of the shifting tympan supply roller journal and its tension adjusting device, a portion of the tension spring being bro-ken away to more clearly show the engagement of the tension adjust ing cap with the ournal of the tympan supply roller;
  • Fig. 4 is an end view of the same with the tension adjusting cap and the tension spring removed;
  • Fig. 5 is an end View of the tension spring;
  • Fig. 6 is an in ner end view of the tension adjusting cap;
  • Fig. 7 is a side view of the same.
  • the impression cylinder is denoted by 1 and its shaft by 2.
  • the tympan supply roll 3 is wound upon the roller 4 and the 'tympan runs from said roller to the exterior of the cylinder through an opening 5 and from thence over the impression surface of the cylinder to another opening 6 where it passes into the interior of the cylinder and is engaged by the feed rollers 7 and 8, from whence it is wound upon the take-up roller 9.
  • the usual blankets 10 are interposed between the surface of the roll and a tympan along the impression surface of the cylinder.
  • the mechanism for shift-ing the tympan at predetermined intervals is well known in the art and will therefore not be particularly described herein, the present invention being devoted exclusively to the tension adjusting device for the tympan supply roller.
  • the journal 11 of the tympan supply roller 4 extends outside of the impression cylinder 1 and is there provided with a ratchet wheel 12 having a limited rotary movement with respect to the said journal. This limited rotary movement in the present instance is.
  • the feed rollers 7 and 8 are geared to- I gether and they, as well as the take-up roller 9, are positively rotated at the 'desired intervals for shifting the tympan to present a clean portion on the impression surface of the cylinder.
  • the ratchet wheel 12 has a limited rotary yielding movement under spring tension on the journal 11 of the supply roller 4, as follows. Between the said ratchet wheel 12 and the journal 11, there is interposed a coil spring 20, the said spring having one end secured to the said ratchet wheel by a pin 21 and its other end secured to the tension adjusting cap 22 as, for instance, by providing the cap with a transverse groove 23 arranged to receive the straightened portion 24 of the outer end of said spring.
  • This spring is so coiled that when the ratchet wheel is locked by the teeth 16 of the pawl lever 15, the spring will tend to turn the journal in a direction to wind or hold back the tympan on the supply roller 4 and the said ratchet wheel and pawl lever will thereby constitute a yielding stop to the tympan.
  • the tension adjusting cap 22 is arranged to be interlocked with the supply roller journal 11 in different rotary adjustments, as follows.
  • the outer end of the journal 11 is provided with an annular the end of the journal 11, the head of which bolt serves'to lock the cap to the journal when the bolt is screwed home.
  • This bolt is of sufficient length so that when it is unscrewed a short distance, the cap 22 may be moved outwardly away from the outer end of the journal 11 a sufficient distance to permit a rotary adjustment of the cap and thereby a tensional adjustment of the spring 20. The bolt may then be screwed home for holding the spring in such proper tensional adjustment.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)

Description

H. M. BARBER.
OPILSBT MECHANISM FOR PRINTING MACHINES.
APPLIOATION FILED MAY 21, 190B.
Patented July 4, 1911;
2 SHEETS-SHEET 1.
H. M. BARBER.
0mm MECHANISM FOR PRINTING MACHINES.
APPLICATION FILED MAY 21, 1908. 996,902, Patented July 4,1911.
2 SHEETS-SHEET 2.
rrn sA'r ran'r are HOWARD M. BARBER, OF STONINGTON, CONNECTICUT, ASSIGNOR T0 C. B. COTTRELL & SONS COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW JERSEY.
OFFSET MECHANISM FOR PRINTING-MACHINES.
Specification of Letters Patent.
Application filed May 21, 1908.
Patented July 4, 1911. Serial No. 434,129.
T 0 all whom it may concern:
Be it known that I, HOWARD M. BARBER, a citizen of the United States, and resident of Stonington, in the county of New London and State of Connecticut, have invented a new and useful Improvement in Offset Mechanism for Printing-Machines, of which the following is a specification.
My invention relates to an improvement in offset mechanism for printing machines and has for its object to provide a tension adjusting device for the shifting tympan supply roller whereby the tension of the roller may be accurately adjusted.
A practical embodiment of my invention is represented in the accompanying drawings in which Figure 1 represents an end view of a portion of an impression cylinder with my improved tension adjusting device for the shifting tympan supply roller applied thereto, certain of the parts being broken away to more clearly show the partsbeneath them; Fig. 2 is a detail transverse section through a portion of the impression cylinder; Fig. 3 is a view in side elevaton of the shifting tympan supply roller journal and its tension adjusting device, a portion of the tension spring being bro-ken away to more clearly show the engagement of the tension adjust ing cap with the ournal of the tympan supply roller; Fig. 4 is an end view of the same with the tension adjusting cap and the tension spring removed; Fig. 5 is an end View of the tension spring; Fig. 6 is an in ner end view of the tension adjusting cap; and Fig. 7 is a side view of the same.
The impression cylinder is denoted by 1 and its shaft by 2. The tympan supply roll 3 is wound upon the roller 4 and the 'tympan runs from said roller to the exterior of the cylinder through an opening 5 and from thence over the impression surface of the cylinder to another opening 6 where it passes into the interior of the cylinder and is engaged by the feed rollers 7 and 8, from whence it is wound upon the take-up roller 9. The usual blankets 10 are interposed between the surface of the roll and a tympan along the impression surface of the cylinder.
The mechanism for shift-ing the tympan at predetermined intervals is well known in the art and will therefore not be particularly described herein, the present invention being devoted exclusively to the tension adjusting device for the tympan supply roller.
The journal 11 of the tympan supply roller 4 extends outside of the impression cylinder 1 and is there provided with a ratchet wheel 12 having a limited rotary movement with respect to the said journal. This limited rotary movement in the present instance is.
The feed rollers 7 and 8 are geared to- I gether and they, as well as the take-up roller 9, are positively rotated at the 'desired intervals for shifting the tympan to present a clean portion on the impression surface of the cylinder.
In order to prevent the stoppage of the supply roller 4 by the pawl lever 15 before the stoppage of the feed rollers 7, 8, and the consequent tearing of the tympan, the ratchet wheel 12 has a limited rotary yielding movement under spring tension on the journal 11 of the supply roller 4, as follows. Between the said ratchet wheel 12 and the journal 11, there is interposed a coil spring 20, the said spring having one end secured to the said ratchet wheel by a pin 21 and its other end secured to the tension adjusting cap 22 as, for instance, by providing the cap with a transverse groove 23 arranged to receive the straightened portion 24 of the outer end of said spring. This spring is so coiled that when the ratchet wheel is locked by the teeth 16 of the pawl lever 15, the spring will tend to turn the journal in a direction to wind or hold back the tympan on the supply roller 4 and the said ratchet wheel and pawl lever will thereby constitute a yielding stop to the tympan. To adjust the tension of this spring to the utmostnicety so as to secure the proper effect upon the tympan, the tension adjusting cap 22 is arranged to be interlocked with the supply roller journal 11 in different rotary adjustments, as follows. The outer end of the journal 11 is provided with an annular the end of the journal 11, the head of which bolt serves'to lock the cap to the journal when the bolt is screwed home. This bolt is of sufficient length so that when it is unscrewed a short distance, the cap 22 may be moved outwardly away from the outer end of the journal 11 a sufficient distance to permit a rotary adjustment of the cap and thereby a tensional adjustment of the spring 20. The bolt may then be screwed home for holding the spring in such proper tensional adjustment.
What I claim is:
1. The combination with the impression cylinder, a shifting tympan supply roller therefor and its journal, of a ratchet wheel loosely mounted on said journal, a tension cap, the adjacent ends of the tension cap and journal being provided with annular series of teeth arranged to be interlocked, means for securing the tension cap in its different rotary adjustments with respect to the journal, and a tension spring connecting the ratchet wheel and tenslon cap.
Copies of this patent may be obtained for 2. The combination with the impression cylinder, a shifting tympan supply roller therefor and its journal, of a ratchet wheel loosely mounted on said journal, a tension cap arranged to be interlocked with the roller journal, a bolt having a screw thread ed engagement with the journal for securing the tension cap and journal in their interlocked adjustment and a tension spring connecting the ratchet wheel and tension cap.
3. The combination with the impression cylinder, a shifting tympan supply roller therefor and its journal, of a ratchet wheel loosely mounted on said journal, a tension cap, the adjacent ends of the tension cap and journal being provided with annular series of teeth arranged to be interlocked, a bolt engaging the journal for securing the tension cap in its diiierent rotary adjustments with respect to the journal and a tension spring connecting the ratchet wheel and tension cap.
In testimony, that I claim the foregoing as my invention, I have signed my name in presence of two Witnesses, this nineteenth day of May A. D. 1908.
HOl/VARD M. BARBER.
Witnesses A. It. STILLMAN, ARTHUR M. CQTTRELL.
five cents each, by addressing the Commissioner of Patents, Washington, D. G.
US43412908A 1908-05-21 1908-05-21 Offset mechanism for printing-machines. Expired - Lifetime US996902A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US43412908A US996902A (en) 1908-05-21 1908-05-21 Offset mechanism for printing-machines.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US43412908A US996902A (en) 1908-05-21 1908-05-21 Offset mechanism for printing-machines.

Publications (1)

Publication Number Publication Date
US996902A true US996902A (en) 1911-07-04

Family

ID=3065233

Family Applications (1)

Application Number Title Priority Date Filing Date
US43412908A Expired - Lifetime US996902A (en) 1908-05-21 1908-05-21 Offset mechanism for printing-machines.

Country Status (1)

Country Link
US (1) US996902A (en)

Similar Documents

Publication Publication Date Title
US996902A (en) Offset mechanism for printing-machines.
US694597A (en) Printing-machine.
US598107A (en) moody
US973098A (en) Roller-bearing for printing-presses.
US705142A (en) Web-printing machine.
US484531A (en) Island
US560345A (en) Offset mechanism for printing-machines
US527774A (en) Island
US365051A (en) Web-feeding svi ech an ism for printing-machines
US301942A (en) Geoege ashley wilson
US1188448A (en) Registering device for printing-couples.
US849454A (en) Printing-machine.
US528233A (en) miohaud
US687659A (en) Distributing-roller for printing-presses.
US1235135A (en) Printing-machine.
US1284475A (en) Web-perfecting machine.
US1041875A (en) Offset mechanism for printing-machines.
US1163073A (en) Ink-distributer for printing-presses.
US459813A (en) Joseph l
US652262A (en) Printing device for paper bags, &c.
US598122A (en) Device
US664584A (en) Form-cylinder.
US751351A (en) Inking apparatus for printing-presses
US637777A (en) Printing-press.
US613055A (en) bechman