公开(公告)号：GB201503028D0

公开(公告)日：2015-04-08

申请号：GB201503028

申请日：2015-02-24

Applicant: DUNCAN STEWART

公开(公告)号：GB0501767D0

公开(公告)日：2005-03-02

申请号：GB0501767

申请日：2005-01-28

Applicant: DUNCAN STEWART

公开(公告)号：CA1302238C

公开(公告)日：1992-06-02

申请号：CA590936

申请日：1989-02-13

Applicant: DUNCAN STEWART M

Inventor： DUNCAN STEWART M

IPC: E21B23/01 ,  E21B33/04 ,  E21B43/10 ,  E21B23/00 ,  E21B33/14

Abstract: A liner setting assembly is useful in setting a liner into a casing string secured in a borehole of a well. The liner setting assembly includes a cone and a cage. The cone enables slidably fitting over the liner, the cone having grips with an oblique notched face forming an engaging surface. The cage receives the cone and includes a second set of grips having oblique notched faces. The cone and cage assembly is secured to the casing string by the grips. Since the cone has a sliding fit in relation to the liner, the operator can reciprocate and rotate the liner even after the cage and cone assembly has been securely engaged with the casing string in the borehole, thereby enabling a positive indication of the correct set position prior to the cement bonding of the liner to the wall of the well.

公开(公告)号：GB1162825A

公开(公告)日：1969-08-27

申请号：GB4016366

申请日：1966-09-08

Applicant: DUNCAN STEWART BONNYBRIDGE LTD ,  ROBERT MCLAREN STEWART

IPC: B25D17/32 ,  E01C23/12 ,  E21B7/02

Abstract: 1,162,825. Percussive tools. DUNCAN STEWART (BONNYBRIDGE) Ltd. 5 Dec., 1967 [8 Sept., 1966], No. 40163/66. Heading B4C. A support arrangement for a percussive tool 43 such as a road breaker or drill, comprises a frame I having a column 13 on which is mounted a slidable sleeve 18 carrying the tool, the sleeve being supported and adjusted by a pneumatic piston-and-cylinder device 23 under the control of a valve 69. The piston-rod 32 of the device 23 is connected to a platform 19 secured to the sleeve 18 and the cylinder is connected to brackets 24 on the column via spring-loaded plunger devices 23 which cushion the vibration of the tool; a number of tools may be mounted on the platform, their handles (44, Fig. 3) being clamped thereto, via a resilient block 47, by means of U-bolts 45. The frame 1 is mounted on wheels 5, one of the wheels being driven by means of a compressed-air actuated motor 49, via a belt-and-pulley drive. The air to the tools and the motor 49 is controlled by means of valves 57 and 63 respectively.

公开(公告)号：GB833251A

公开(公告)日：1960-04-21

申请号：GB3161256

申请日：1956-10-17

Applicant: DUNCAN STEWART & COMPANY LTD ,  KENNETH SAMUEL ARNOLD

IPC: C13B10/06

Abstract: 833,251. Driving sugar-cane &c. mills. STEWART & CO. Ltd., D., and ARNOLD, K. S. Oct. 17, 1956, No. 31612/56. Addition to 699,432. Class 59 The crushing mill installation of the parent Specification, which is referred to, is modified by providing at least one final reduction gear within the gear box. As shown, final reduction gears 2, 5 are located within a gear box 1 and mesh with the same pinion on the output shaft of the gear box. Each final reduction gear is connected by a shaft to a sugar-cane or other mill.

公开(公告)号：FR72445E

公开(公告)日：1960-04-13

申请号：FR751033

申请日：1957-11-06

Applicant: DUNCAN STEWART & COMPANY LTD

IPC: C13B10/06

公开(公告)号：GB828450A

公开(公告)日：1960-02-17

申请号：GB3161156

申请日：1956-10-17

Applicant: DUNCAN STEWART & COMPANY LTD

Inventor： ARNOLD KENNETH SAMUEL

IPC: C13B10/06

公开(公告)号：FR1184472A

公开(公告)日：1959-07-22

申请号：FR1184472D

申请日：1957-10-17

Applicant: DUNCAN STEWART & COMPANY LTD

IPC: F01D15/12

公开(公告)号：FR1067084A

公开(公告)日：1954-06-11

申请号：FR1067084D

申请日：1952-11-24

Applicant: DUNCAN STEWART & COMPANY LTD

IPC: C13B10/06

公开(公告)号：GB516920A

公开(公告)日：1940-01-16

申请号：GB1969738

申请日：1938-07-04

Applicant: DUNCAN STEWART & COMPANY LTD ,  JOHN BURRELL TALBOT CROSBIE ,  ARTHUR PENRHYN STANLEY MACQUIS

IPC: B21K21/04

Abstract: 516,920. Forging and squirting cases for shells. STEWART & CO.-, Ltd., D., CROSBIE, J. B. TALBOT-, and MACQUISTEN, A. P. S. July 4, 1938. No. 19697. [Classes 83 (ii) and 83 (iv)] In the production of hollow ammunition shells from a steel billet by a forging and extrusion process, such for example as that described in Specification 469,550, the formation of a fin between the plunger and the wall of the billet receiving chamber is avoided by cooling the billet over an outer annular area on the face of the billet which is subjected to the action of the moving tools. The. billet 6 may be cooled locally immediately prior to the forging and extrusion operation by immersion in a water vessel 1 having an inlet 2, outlet 3, guide plate 5 and an iron pad 4 on which the billet is rested..