US1614940A - Delivery mechanism for printing machines - Google Patents

Delivery mechanism for printing machines Download PDF

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Publication number
US1614940A
US1614940A US113949A US11394926A US1614940A US 1614940 A US1614940 A US 1614940A US 113949 A US113949 A US 113949A US 11394926 A US11394926 A US 11394926A US 1614940 A US1614940 A US 1614940A
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US
United States
Prior art keywords
cam
chains
cylinder
speed
delivery
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
US113949A
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English (en)
Inventor
Wright Fred Wesley
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.)
GEORGE MANN AND Co Ltd
Original Assignee
GEORGE MANN AND Co Ltd
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 GEORGE MANN AND Co Ltd filed Critical GEORGE MANN AND Co Ltd
Application granted granted Critical
Publication of US1614940A publication Critical patent/US1614940A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/02—Delivering or advancing articles from machines; Advancing articles to or into piles by mechanical grippers engaging the leading edge only of the articles
    • B65H29/04—Delivering or advancing articles from machines; Advancing articles to or into piles by mechanical grippers engaging the leading edge only of the articles the grippers being carried by endless chains or bands
    • B65H29/042—Intermediate conveyors, e.g. transferring devices

Definitions

  • This invention relates to printing ma- .chines of the type having an impression cylinder and delivery chains receiving a sheet direct from the impression or take-oil cylinder and driven throughout the working cycle by a single gear train.
  • Thepresent invention consists in a machine of the above, type in which the single gear train driving the delivery chains is controlled by a timed cam so that thespeed of the delivery chains is equal to the uniform peripheral speed of the impression or takeoff cylinder during the take-off portion of the working cycle and is less than such peripheral speed during the remainder of 'thefycle.
  • Figure 1 shows a timed cam suitablefor an epicyclic gear delivery mechanism
  • FIG. 2 shows the delivery mechanism driven by a rack and pinion gear controlled by the timed cam with the casing in section
  • Figure 3 is an end view of a portion of Figure 2 with the casing in section
  • Figure ishows the delivery mechanism driven by sliding helical gears.
  • the timed cam is formed as shown in Figure 1, andfor the sake of convenience may be considered as divided into five portions, the first portion beingdesignated as A to B.
  • the chains will momentarily be running at their average speed and from position A to position B the cam is so formed "as to speedup the chains.
  • the cam groove takes the form of an Archimedean spiral and occupies about two-thirds of the, whole circumference. The chains'will then be running at a uniform speed equal to the peripheral speed of the ,t'ake-off cylinder for taking ofl' the sheet.
  • the speed of-the chains is thus'not increased above the uniform take-off speed at any point of the cycle.
  • Two rocking levers, 8, 9, are mounted upon a common pivot, 10, the ends, 11, 12, ofthe levers being-provided with suitable rollers or the like engaging respectively in the appropriate cam grooves, 6 land 7.
  • the other arms of the levers are considerably longer and are provided with links, 13,14, which are pivotallyconnected to two rack bars, 15, 16,'situated sideby side and sliding in a cage, 17-.
  • the two rack bars. engage with two pinions, 18, 19, mounted I loosely upon the shaft, 20, and the pinions are provided with projections, 21, 22, upon which are mounted the pawls, 23, 24:, engaging with notches or shoulders, 25, 26, on the boss or hub, 27, fixed by means of keys or the like to the shaft, 20;
  • the two shoulders on the 7 boss are situated exactly at 180 apart.
  • the cams may be considered as divided into six portions the first portion being desig nated asa'to I); I
  • the path of the cam which is used for the constant speed equal to the peripheral speed is an Archimedean spiral, but the other portions of the cam path may have any suitable form to accelerate and retard the speed of the chains as desired.
  • the timed cam, 40 operates a bell crank, 41, 42, which is connected by a link, 43, to a double-ended lever, 44, pivoted at 45.
  • the lever, 44 is provided with a block or the like 46, running in a groove, 4?, on the pinion, 48, which slides by means of a spline or feather on the shaft, 49, which is driven by suitable gearing from Elie shaft, 2, carrying the impression cyliner, 1.
  • the sliding pinion, 48 is provided With helical teeth which engage a wheel, 50, and drives through suitable gearing the chain wheel, 51. i
  • the cam, 40 reciprocates the pinion, 48, and gives the variable motion to the chain.
  • the shape of the cam is as shown in Figure 1 and the uniform speed is obtained by the portion of the cam B to C which is an Archiinedean spiral, the retardation and acceleration of the chains by the portions, AB, DE and EA, of the cam having any suitable form, the speed of the chains never exceeding the peripheral speed of the impression or take-oil cylinder.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Devices (AREA)
US113949A 1925-07-02 1926-06-05 Delivery mechanism for printing machines Expired - Lifetime US1614940A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB17063/25A GB256752A (en) 1925-07-02 1925-07-02 Improvements in and relating to delivery mechanisms for printing machines

Publications (1)

Publication Number Publication Date
US1614940A true US1614940A (en) 1927-01-18

Family

ID=10088586

Family Applications (1)

Application Number Title Priority Date Filing Date
US113949A Expired - Lifetime US1614940A (en) 1925-07-02 1926-06-05 Delivery mechanism for printing machines

Country Status (3)

Country Link
US (1) US1614940A (fr)
FR (1) FR616977A (fr)
GB (1) GB256752A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2503610A (en) * 1944-09-08 1950-04-11 Goss Printing Press Co Ltd Delivery arrangement
US2610850A (en) * 1948-02-24 1952-09-16 Huck Co Sheet delivery mechanism for printing machines
US3935814A (en) * 1973-02-19 1976-02-03 Miller Printing Machinery Co. Sheet delivery apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2503610A (en) * 1944-09-08 1950-04-11 Goss Printing Press Co Ltd Delivery arrangement
US2610850A (en) * 1948-02-24 1952-09-16 Huck Co Sheet delivery mechanism for printing machines
US3935814A (en) * 1973-02-19 1976-02-03 Miller Printing Machinery Co. Sheet delivery apparatus

Also Published As

Publication number Publication date
GB256752A (en) 1926-08-19
FR616977A (fr) 1927-02-11

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