GB643885A - An improved mobile tower for supporting cameras, optical projectors or other apparatus used in the cinematographic film making industry - Google Patents
An improved mobile tower for supporting cameras, optical projectors or other apparatus used in the cinematographic film making industryInfo
- Publication number
- GB643885A GB643885A GB28018/47A GB2801847A GB643885A GB 643885 A GB643885 A GB 643885A GB 28018/47 A GB28018/47 A GB 28018/47A GB 2801847 A GB2801847 A GB 2801847A GB 643885 A GB643885 A GB 643885A
- Authority
- GB
- United Kingdom
- Prior art keywords
- wheels
- platform
- fixed
- slipper
- uprights
- 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
-
- 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
- G03B17/00—Details of cameras or camera bodies; Accessories therefor
- G03B17/56—Accessories
- G03B17/561—Support related camera accessories
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Types And Forms Of Lifts (AREA)
- Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
Abstract
643,885. Load-handling machines. PRODUCTION FACILITIES (FILMS), Ltd., RAWNSLEY, D. W., and GREEN, E. R. Oct. 20, 1947, No. 28018. [Class 78 (iii)] [Also in Group XX] A mobile tower for supporting kinematographic cameras or other optical apparatus comprises a platform 4 raised and lowered between uprights 3 extending from the base 1 of the tower by power means, the base comprising wheels 6 adapted either to bear upon the ground for transport or to be raised from the ground so that the tower is supported on fixed members. The fixed members preferably comprise jack-actuated feet 5, wheels 6 being freely rotatable on axes fixed vertically but capable of swivelling. The platform is supported between vertical guides 22 in the uprights 3 by means of four slippers 15 secured to two uprights 20, Fig. 4, extending upwards from the platform and forming part of a framework which also includes a transverse beam 11. Each slipper 15 consists of a U- shaped channel member, Fig. 4, to one side of which is fixed a plate 31, the other side being provided with a similar plate 23 loosely attached to the slipper by dowels and by a bolt 25. Plate 23 is kept in light frictional contact with guide 22 by means of a spring 26 adjustable by nut 28. A taper jib 16 is supported in brackets 32 on each slipper for sliding vertically, so that movement of a lever 17 operating a short double arm crank 18 at each side of the platform which is connected through links 19 to the jibs at that side, moves them in a direction so as to press on the plates 23 of each slipper, causing binding on the guide 22 and consequent locking of the platform. Cables 7 attached to the platform pass through apertures 12, Fig. 4, in the slippers 15 and over pulleys 8 to a winch or hydraulic ram in the base, counterweights 13 sliding on guides 14 being included in the vertical stretches of the cable in the uprights 3. The wheels 6 at two corners may be coupled together for steering, while the other two wheels or wheel pairs are free to trail. Alternatively, the wheels may be flanged and on fixed axes, one at each corner of the base, for running on a rail track and a further set of flanged wheels on axes at right angles to the first set may be arranged to be lowered by hydraulic jacks to engage cross-over rails leading to a parallel track. In all forms the jackactuated feet 5 may be replaced by fixed feet and the wheels may be raised and lowered by separate jacks or a single jack coupled to all the wheels.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB28018/47A GB643885A (en) | 1947-10-20 | 1947-10-20 | An improved mobile tower for supporting cameras, optical projectors or other apparatus used in the cinematographic film making industry |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB28018/47A GB643885A (en) | 1947-10-20 | 1947-10-20 | An improved mobile tower for supporting cameras, optical projectors or other apparatus used in the cinematographic film making industry |
Publications (1)
Publication Number | Publication Date |
---|---|
GB643885A true GB643885A (en) | 1950-09-27 |
Family
ID=10268938
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB28018/47A Expired GB643885A (en) | 1947-10-20 | 1947-10-20 | An improved mobile tower for supporting cameras, optical projectors or other apparatus used in the cinematographic film making industry |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB643885A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2890082A (en) * | 1953-06-22 | 1959-06-09 | Carter E Mcdaniel | Hoisting attachment for tubular steel scaffolds |
GB2257685A (en) * | 1991-06-01 | 1993-01-20 | James Thomas Engineering Limit | Tower support systems |
GB2270674A (en) * | 1992-09-18 | 1994-03-23 | Obie S Lighting Prod Inc | Compact truss system. |
CN110422559A (en) * | 2019-08-22 | 2019-11-08 | 华天科技(宝鸡)有限公司 | A kind of multilayer and multiposition automatic raw material feeding box lifting device |
CN114148949A (en) * | 2021-11-28 | 2022-03-08 | 中国船舶重工集团应急预警与救援装备股份有限公司 | Automatic change lift platform |
-
1947
- 1947-10-20 GB GB28018/47A patent/GB643885A/en not_active Expired
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2890082A (en) * | 1953-06-22 | 1959-06-09 | Carter E Mcdaniel | Hoisting attachment for tubular steel scaffolds |
GB2257685A (en) * | 1991-06-01 | 1993-01-20 | James Thomas Engineering Limit | Tower support systems |
GB2270674A (en) * | 1992-09-18 | 1994-03-23 | Obie S Lighting Prod Inc | Compact truss system. |
GB2270674B (en) * | 1992-09-18 | 1995-11-22 | Obie S Lighting Prod Inc | Compact truss system |
CN110422559A (en) * | 2019-08-22 | 2019-11-08 | 华天科技(宝鸡)有限公司 | A kind of multilayer and multiposition automatic raw material feeding box lifting device |
CN114148949A (en) * | 2021-11-28 | 2022-03-08 | 中国船舶重工集团应急预警与救援装备股份有限公司 | Automatic change lift platform |
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