GB755142A - Improvements in or relating to a spring motor, particularly for a motion picture camera - Google Patents
Improvements in or relating to a spring motor, particularly for a motion picture cameraInfo
- Publication number
- GB755142A GB755142A GB13522/54A GB1352254A GB755142A GB 755142 A GB755142 A GB 755142A GB 13522/54 A GB13522/54 A GB 13522/54A GB 1352254 A GB1352254 A GB 1352254A GB 755142 A GB755142 A GB 755142A
- Authority
- GB
- United Kingdom
- Prior art keywords
- spring
- coil
- natural
- picture camera
- drum
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
- F03G1/00—Spring motors
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Springs (AREA)
Abstract
755,142. Spiral Springs. KODAK, Ltd. May 10, 1954 [May 11, 1953], No. 13522/54. Class 108 (3). [Also in Group XXVI] The spring 20 shown in Fig. 4 applied to a motion-picture camera is of the type having constant force characteristics which exerts a predetermined diminishing torque. The spring is a tight coil of resilient metallic band which is progressively unwound throughout the range of action. The material of the band is prestressed in manufacture so that it possesses a strong natural curvature and force must be exerted to straighten it. Throughout its entire length, the spring is so highly pre-stressed that when it forms a natural coil, the turns lie tightly upon each other and the resultant coil is virtually solid. In use in the camera the spring in its natural coil is wound upon a drum 21. Energy is stored in the spring by winding it on to a drum 23.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US755142XA | 1953-05-11 | 1953-05-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB755142A true GB755142A (en) | 1956-08-15 |
Family
ID=22126266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB13522/54A Expired GB755142A (en) | 1953-05-11 | 1954-05-10 | Improvements in or relating to a spring motor, particularly for a motion picture camera |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB755142A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3216528A (en) * | 1963-12-23 | 1965-11-09 | John H Hartman Jr | Spring motor drive |
-
1954
- 1954-05-10 GB GB13522/54A patent/GB755142A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3216528A (en) * | 1963-12-23 | 1965-11-09 | John H Hartman Jr | Spring motor drive |
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