GB1516593A – Camera shutter mechanism
– Google Patents
GB1516593A – Camera shutter mechanism
– Google Patents
Camera shutter mechanism
Info
Publication number
GB1516593A
GB1516593A
GB19547/76A
GB1954776A
GB1516593A
GB 1516593 A
GB1516593 A
GB 1516593A
GB 19547/76 A
GB19547/76 A
GB 19547/76A
GB 1954776 A
GB1954776 A
GB 1954776A
GB 1516593 A
GB1516593 A
GB 1516593A
Authority
GB
United Kingdom
Prior art keywords
lever
hook
opening
shutter
free
Prior art date
1975-05-14
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
GB19547/76A
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.)
Seiko Koki KK
Original Assignee
Seiko Koki KK
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.)
1975-05-14
Filing date
1976-05-12
Publication date
1978-07-05
1976-05-12
Application filed by Seiko Koki KK
filed
Critical
Seiko Koki KK
1978-07-05
Publication of GB1516593A
publication
Critical
patent/GB1516593A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
G—PHYSICS
G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
G03B9/00—Exposure-making shutters; Diaphragms
G03B9/08—Shutters
G03B9/10—Blade or disc rotating or pivoting about axis normal to its plane
G03B9/18—More than two members
Abstract
1516593 Camera shutter SEIKO KOKI KK 12 May 1976 [14 May 1975] 19547/76 Heading G2A A camera shutter has an opening member 4 for moving opening blades 3, a closing member 6 for moving closing blades (not shown), and a charge member 10 for charging the opening and closing members 4 and 6; the arrangement being such that after the opening member 4 has run off it holds the charge member 10 in position, and when the closing member 6 runs off the closing member 6 is in turn held by the charge member 10 to prevent rebound. As shown, the shutter is operable in automatic, manual and bulb modes. Automatic mode. A selection lever 29, (Fig. 2) is set to «A» to disable mechanical timing and bulb exposure levers 27, 28. Operation of release lever 19 frees a lever 18 which closes a flash synch contact 18b for lamps having a long delay and releases a hook 17 from a gear 16. Gear 16 rotates CW (clockwise) and this (a) rotates a wheel 20 CW to rotate a lever 24 CW and thereby free an armature lever 25, which however is held by an electromagnet 26. (b) releases a hook 22 to free a cam wheel 21 which opens contacts (33, 34) Fig. 5 (not shown) to start shutter timing. Cam wheel 21 also pushes a lever 23 which releases a hook 5 (Fig. 1). Release of hooks 5 enables closing member 4 to rotate CW and open the shutter. Towards the end of its movement, member 4 (a) turns charge member 10 to free a hook 12 and allow a contact lever 11 to close flash synch contacts 11d, 13 for lamps having a short delay. (b) holds charge member 10 in position by means of a pin 4f engaged in a recess 10b. After a timed period, the electromagnet 26 (Fig. 2) is de-energized, releasing armature lever 25 which pivots a hook 7 (Fig. 1) to free closing member 6. This closes the shutter and at the end of its movement abuts a stop pin 5c and is prevented from rebounding by engagement of a hook 6g with a cut-out 10d of charge member 10. Manual mode. Lever 29 (Fig. 2) is set to «M» In this case, armature lever 25 is held by a mechanical timing lever 27. When the opening member 4 (Fig. 1) completes its opening movement, it frees hook 12 as before and this hook shifts the mechanical timing lever 27 (Fig. 2) to free armature lever 25 which pivots hook 7, (Fig. 1) to free closing member 6 as before. Bulb mode. Lever 29 (Fig. 2) is set to «B». In this case, armature lever 25 is held by a bulb lever’ 28 until the camera button is released (no mechanism for release of lever 28 is described). Shutter cocking. A cocking lever 8 (Fig. 1) is turned ACW to move charge member 10 which rotates the opening and closing members 4 and 6 into charged positions in which they are latched by hooks 5 and 7. The lever 8 or member 10 may have a rebound prevention arrangement (not shown) for the opening member 4.
GB19547/76A
1975-05-14
1976-05-12
Camera shutter mechanism
Expired
GB1516593A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
JP1975063772U
JPS51143443U
(en)
1975-05-14
1975-05-14
Publications (1)
Publication Number
Publication Date
GB1516593A
true
GB1516593A
(en)
1978-07-05
Family
ID=13238984
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB19547/76A
Expired
GB1516593A
(en)
1975-05-14
1976-05-12
Camera shutter mechanism
Country Status (4)
Country
Link
US
(1)
US4110772A
(en)
JP
(1)
JPS51143443U
(en)
DE
(1)
DE2621229A1
(en)
GB
(1)
GB1516593A
(en)
Families Citing this family (10)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
JPS5924019Y2
(en)
*
1975-12-29
1984-07-17
セイコ−光機株式会社
Camera operation lever
JPS6131305Y2
(en)
*
1977-12-15
1986-09-11
JPS5577730A
(en)
*
1978-12-06
1980-06-11
Copal Co Ltd
Bound preventing mechanism of focal plane shutter
US4245905A
(en)
*
1978-12-27
1981-01-20
Copal Company Limited
Blade actuating device for focal plane shutters
JPS5717936A
(en)
*
1980-07-07
1982-01-29
Canon Inc
Shutter controlled by electromagnet
JPS57116928U
(en)
*
1981-01-13
1982-07-20
US4657366A
(en)
*
1985-04-30
1987-04-14
Nippon Kogaku K.K.
Shutter device for camera
JP2001066663A
(en)
*
1999-08-31
2001-03-16
Seiko Precision Inc
Focal plane shutter
JP4981325B2
(en)
*
2006-02-13
2012-07-18
キヤノン株式会社
Camera system
JP4948367B2
(en)
*
2007-11-12
2012-06-06
セイコープレシジョン株式会社
Focal plane shutter
Family Cites Families (7)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US3698304A
(en)
*
1969-03-06
1972-10-17
Minolta Camera Kk
Shutter release control mechanism
JPS508660B1
(en)
*
1970-06-05
1975-04-05
JPS5315369B2
(en)
*
1971-10-06
1978-05-24
JPS4955037U
(en)
*
1972-08-23
1974-05-15
JPS5612846B2
(en)
*
1972-11-01
1981-03-25
JPS5332017Y2
(en)
*
1973-04-11
1978-08-09
US3946413A
(en)
*
1974-12-31
1976-03-23
Seiko Koki Kabushiki Kaisha
Shutter blade rebound preventive device for camera shutter
1975
1975-05-14
JP
JP1975063772U
patent/JPS51143443U/ja
active
Pending
1976
1976-05-12
GB
GB19547/76A
patent/GB1516593A/en
not_active
Expired
1976-05-13
DE
DE19762621229
patent/DE2621229A1/en
not_active
Withdrawn
1977
1977-10-03
US
US05/838,866
patent/US4110772A/en
not_active
Expired – Lifetime
Also Published As
Publication number
Publication date
US4110772A
(en)
1978-08-29
JPS51143443U
(en)
1976-11-18
DE2621229A1
(en)
1976-12-02
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Legal Events
Date
Code
Title
Description
1978-11-08
PS
Patent sealed [section 19, patents act 1949]
1987-12-31
PCNP
Patent ceased through non-payment of renewal fee
