GB682212A - Power-driven mechanism for operating type bars and other instrumentalities of typewriter or like machines - Google Patents

Power-driven mechanism for operating type bars and other instrumentalities of typewriter or like machines

Info

Publication number
GB682212A
GB682212A GB13208/50A GB1320850A GB682212A GB 682212 A GB682212 A GB 682212A GB 13208/50 A GB13208/50 A GB 13208/50A GB 1320850 A GB1320850 A GB 1320850A GB 682212 A GB682212 A GB 682212A
Authority
GB
United Kingdom
Prior art keywords
pulley
flange
pin
snatch roll
belt
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
Application number
GB13208/50A
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.)
Royal Typewriter Co Inc
Original Assignee
Royal Typewriter Co Inc
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
Priority to US102634A priority Critical patent/US2573197A/en
Application filed by Royal Typewriter Co Inc filed Critical Royal Typewriter Co Inc
Publication of GB682212A publication Critical patent/GB682212A/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, e.g. INK-JET PRINTERS, THERMAL PRINTERS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J7/00Type-selecting or type-actuating mechanisms
    • B41J7/92Impact adjustment; Means to give uniformity of impression

Abstract

682,212. Typewriters &c. ROYAL TYPEWRITER CO., Inc. May 25, 1950 [July 1, 1949], No. 13208/50. Class 100 (iv). A power operated typewriter or like machine comprises a rotating snatch roll 9, Fig. 3, and a driving pulley 69 whose effective diameter on which a driving belt 68 engages can be varied to adjust the speed of the pulley and snatch roll 9 to vary the face transmitted to the various operated parts e.g. a typelever mechanism as shown in Fig. 9. The key-lever mechanism is similar to that described in Specification 674,941, but means are provided whereby the force of the impression of individual type-levers may be adjusted, and comprises an extension 46 of the actuator 10 which can be bent into various positions as indicated at 46a and 46b so that the extent to which the actuator pawl nose 23a enters a tooth space on the snatch roll 9 is controlled. If the extension 46 is moved into position 46b the pawl 23 makes a greater clockwise movement and the drive of the snatch roll on the nose 23a is accordingly greater.' The means whereby the power to actuate the type levers or other mechanisms is collectively adjusted, comprises a drive to the variable diameter driving pulley 69, driven from a constant speed source D, Fig. 6, geared down by belt and pulley drives 50-60 driving a shaft 61 carrying a V-groove pulley 67 around which is trained a belt 68 rotating the variable diameter pulley 69. This pulley comprises an axially fixed flange 84, Fig. 3, and an axially slidable flange 90 rotatably secured to a pin 80 secured to the snatch roll 9. To adjust the effective diameter of the pulley the distance between the two flanges 84, 90 is adjusted, the slack in the belt 68 being taken up by a pair of spring loaded jockey pulleys. Flange 90 transmits rotation to the flange 84 through a slotted collar 93, keyed to the pin 80 and engaging a pin 96 extending from the flange 84. Axial movement imparted to the flange 90 is derived from a knob 108 carrying markings on a surface M which are aligned with a pointer 113 formed in the framework 114. The knob is rotatable between fixed limits to turn a screw 104 in a bushing 100 to transmit, through a ball 102 and a pin 79, an axial movement to the snatch roll 9 and pin 80 against the pressure of a return spring 107. Carriage-returning mechanism. - Carriagereturn movement is effected by a mechanism actuated from the snatch roll 9 as described in Specification 674,943 operating a fork 132, Fig. 6, which axially moves a cone 130 leftwardly spreading clutch-engaging fingers 131 which operate to expand a ring 129 to transmit the drive from the motor driven shaft 61 to a drum 128 on which is wound a carriage-pulling band 125.
GB13208/50A 1949-07-01 1950-05-25 Power-driven mechanism for operating type bars and other instrumentalities of typewriter or like machines Expired GB682212A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US102634A US2573197A (en) 1949-07-01 1949-07-01 Power-driven mechanism for operating type bars and other instrumentalities of typewriters or like machines

Publications (1)

Publication Number Publication Date
GB682212A true GB682212A (en) 1952-11-05

Family

ID=22290870

Family Applications (1)

Application Number Title Priority Date Filing Date
GB13208/50A Expired GB682212A (en) 1949-07-01 1950-05-25 Power-driven mechanism for operating type bars and other instrumentalities of typewriter or like machines

Country Status (3)

Country Link
US (1) US2573197A (en)
FR (1) FR1022378A (en)
GB (1) GB682212A (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2734613A (en) * 1956-02-14 kennedy
US2824457A (en) * 1954-04-21 1958-02-25 Harris Intertype Corp Speed control for printing press
US2921660A (en) * 1957-09-30 1960-01-19 Smith Corona Marchant Inc Power driving mechanism for instrumentalities of typewriters
US3164237A (en) * 1961-09-29 1965-01-05 Scm Corp Impression control mechanism in power driven typewriters
US3616887A (en) * 1969-08-06 1971-11-02 Litton Business Systems Inc Motor stall overcoming device in a power typewriter
US3642109A (en) * 1970-01-19 1972-02-15 Scm Corp Belt tension device
DE2456553C2 (en) * 1974-11-29 1976-11-11 Internat Harvester Company Mbh V-BELT PULLEY WITH AUTOMATIC RE-TENSIONING DEVICE
FR2348407B1 (en) * 1976-04-15 1978-08-25 Ferodo Sa

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US589003A (en) * 1897-08-31 Swing sawing and grooving machine
US1202227A (en) * 1913-09-11 1916-10-24 Janesville Machine Company Change-speed mechanism.
US1737439A (en) * 1925-06-12 1929-11-26 Underwood Elliott Fisher Co Typewriting machine
US1984410A (en) * 1931-12-14 1934-12-18 Remington Typewriter Co Typewriting machine
US2170212A (en) * 1934-02-19 1939-08-22 Us Electrical Motors Inc Variable ratio transmission device
US2278739A (en) * 1939-04-10 1942-04-07 Reeves Pulley Co Speed-varying drive
US2362138A (en) * 1942-09-09 1944-11-07 Kavle Head Corp Typewriter mechanism

Also Published As

Publication number Publication date
US2573197A (en) 1951-10-30
FR1022378A (en) 1953-03-04

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