公开(公告)号：GB268545A

公开(公告)日：1927-04-07

申请号：GB814526

申请日：1926-03-25

Applicant: DUNCAN STEWART & COMPANY LTD ,  THOMAS EDMUND HOLMES

IPC: F16D11/14

Abstract: 268,545. Stewart & Co., Ltd., D., and Holmes, T. E. March 25, 1926. Clutches, claw; flexible or yielding clutch members.-To facilitate the engagement of clutch claws 5, 6, the driving- member 1 carries an axiallyextending pin or pins 12, adapted to make prior engagement with holes 11 in a concentric intermediate member 10 axially located on the driven member 7, to which it imparts initial rotary movement through an elastic connection. The part 1 may be rotatable between collars 3, 4 on the shaft 2. to which the part 7, actuated by a rod 8, is splined. Arms 23, 23 , 24, 24 , rigid with spindles 25, 26 borne by the member 7, are connected at 29, 30 by adjustable turnbuckles 27, 28 to pins 31, 32 on the member 10, and by links 21, 22 to shouldered bolts 15, 16. These bolts are pressed by springs 13, 14, which have adjustable initial compression and bear on abutments 17, 18 on the driven member 7. This arrangement may be inverted, the abutments &c. being on the intermediate member 10. The adjustments are such that, by the time the claws 5, 6 engage, the driven member will have been elastically accelerated to approximately the speed of the driving-member, Disengaging tendency of the claws 5, 6 under spring reaction is prevented by stepped faces 33, 34. The Provisional Specification describes a form in which the lever pivots are carried by the part rigidly connected to the levers by adjusting- means, which may comprise an eccentric.

公开(公告)号：FR497907A

公开(公告)日：1919-12-20

申请号：FR497907D

申请日：1919-04-07

Applicant: DUNCAN STEWART AND COMPANY LTD ,  LE SIEUR THOMAS EDMUND HOLMES

Inventor： HOLMES LE SIEUR THOMAS EDMUND

IPC: F04B49/04

公开(公告)号：FR490297A

公开(公告)日：1919-04-15

申请号：FR490297D

申请日：1918-05-29

Applicant: DUNCAN STEWART AND COMPANY LTD ,  THOMAS EDMUND HOLMES

Inventor： HOLMES THOMAS EDMUND

IPC: B21B31/06

公开(公告)号：GB118518A

公开(公告)日：1918-09-05

申请号：GB1688617

申请日：1917-11-16

Applicant: DUNCAN STEWART AND COMPANY LTD ,  THOMAS EDMUND HOLMES

IPC: B21J9/12

Abstract: 118,518. Stewart & Co., D., and Holmes, T. E. Nov. 16, 1917. Shearing.-An hydraulically-operated shearing- press or the like of the kind in which the work is carried by a rising and falling table is constructed so that the table is lowered, not by the pressure on the work, but by a mechanical connexion with a moving member of the press. A lost-motion device forms part of this connexion to enable the shearing-blade to be moved relatively to the work. A clutch is also provided between this mechanical connexion and the table-lowering gear, this clutch being controlled by a ram operated by a cylinder in communication with the main ram of the press. As shown, the work-table B is supported by adjustable arms A of a parallel-motion link system comprising lever arms A , A connected by links A' all controlled from a shaft A, which is connected by a link C to a counterbalancing hydraulic ram C in a cylinder C . The shaft A is rocked to lower the table B by means of a link D connected to the moving head D of the press and operating a lever D on a counterbalanced shaft D by means of a slot D , and a pin on the lever D . The shaft D transmits motion by means of a link D and a freely-mounted clutch element D , Fig. 2, to the shaft A, the movable element D of the clutch being operated to close the clutch by a lever E operated by a ram E of a cylinder E supplied from the main intensifier supply to the press through a pipe E and non- return valve E . When it is required to hold the table in its lowered position for a certain time, the pressure is maintained in the cylinder E until the main hand-lever of the machine reaches a predetermined position, whereupon it is caused to operate by means of a link G , lever G , and link G , a valve G which connects the cylinder E to exhaust, the clutch D', D being then unclutched and a valve H opened by means of a link and lever system H , H with a lost motion. The valve H admits water from the accumulator to the cylinder C and thereby raises the table to normal position.

公开(公告)号：GB191202842A

公开(公告)日：1912-11-28

申请号：GB191202842D

申请日：1912-02-03

Applicant: DAVY BROTHERS LTD ,  THOMAS EDMUND HOLMES

IPC: B21J9/12

Abstract: 2842. Davy Bros., and Holmes, T. E. Feb. 3. Intensifiers. - In a steam hydraulic intensifier used in conjunction with an hydraulic press, valved connexions are used to enable the steam which effects or assists the initial descent of the press ram to pass into the steamcylinder of the intensifier. The Figure shows the apparatus applied to a steam intensifier hydraulic press embodying features set forth in Specifications 781/05, 18,329/05, 23,628/05, and 16,609/07. The press ram 4 is attached to the press head 3, which is worked by the ram 4 and lifting-pistons 7, 7. The piston 10 works in the steam-cylinder 9, and the rod 11 is prolonged to form a ram 12 working in the hydraulic cylinder 13. The hydraulic pressure main 14 leads from the cylinder 13 to the cylinder 5 and to the air-vessel 16 through a valve 17. The main. steam-supply pipe 18 communicates through the valve 56,55 with the pipe 53 leading to the tops of the retracting- pistons 7, and permanently communicates with the bottoms of these pistons by the pipe 51. The pipe 51 is in communication through the valve 55 and a non- return valve with the steam chamber of the intensifier. Steam also enters the steamchamber o f the intensifier through the pipe 18, valve 20. and pipes 22, 19. Thesteaminlet valve 20 and the exhaust valve 21 are controlled on the one hand manually by means of the lever 24 and on the other hand automatically by means of hunting- gear governed by the piston 10 substantially in the manner described in Specification 781/05. For this purpose, the stems of the valves 20, 21 have pin-and-slot connexions 27, 28 with the lever 29 pivoted at 30. The valve 20 is loaded to compensate for the differential area due to the valve - rod. T h e lever 29 is connected to the lever 33, which is acted upon by the hand-lever 24 and by the lever 36 of the automatic control device. Assuming the ram 4 to be raised, then when the lever 24 is moved from position a to position b, the valve 20 is opened and pressure-water is forced into the cylinder 5, until, as the piston 10 approaches that point in its travel which corresponds to the point at which the hunting- lever 24 is held, the valve 20 is automatically closed, and the motion of the piston 10 is arrested. The hand-lever 24 is coupled to the valve 17 by pin-and-slot and lever mechanism, so that the valve may be opened positively without interfering with the automatic opening. The arrangement is such that, when the lever 24 is moved from a to d to open the exhaust valve, the valve 17 is also lifted from its seat so that any surplus water may be forced into the air-vessel 16. The duplex piston valve 55, 56 controlling the passage of steam to and from the cylinders 6 is capable of occupying the normal or lowered position where it closes the communication between the pipes 18, 53 and establishes communication between the pipes 53, 58, and the raised position (shown in the Figure) where it establishes connexion between the pipes 18, 53 and closes communication between the pipes 55, 58. The valve 55, 56 tends to assume its lowered position by gravity and spring pressure, and is detachably coupled to the hand-lever through the medium of trip mechanism consisting of a plunger 62, socket 61, recess 63, and spring latch 64. The arrangement is such that when the valve 55, 56 is in its lowered position and the lever 24 in the position c, the plunger 62 descends so far as to permit the latch 64 to enter the notch 63, so that when the lever 24 is afterwards returned to the position a, the socket 61 and the valve 55, 56 rise to the highest position. Further upward movement of the socket 61 causes the lever-and-link gear 66, 68 to withdraw the latch and allow the valve 55, 56 to drop back to its normal or lowered position. Assuming the valve 55, 66 to be in its lower position, steam is cut off from cylinder 9 and pipe 53, but is allowed to act upon the lower surfaces of the piston 7 to raise the ram, and when the lever 24 is moved to the position d, to operate the valve 17. To further operate the press, the lever 24 is advanced to the position c so that the rod 62 may engage with the valve spindle, and the valve 55, 56 is raised by returning the lever 24 to the position a. Steam then acts upon the piston 7 to lower the ram 4 to the work. A further movement of the lever 24 to the position e causes the disconnexion of the rod 62 and valve spindle and the cutting-off of steam from the pipe 53. The steam already admitted through this pipe expands and acts upon the intensifier piston 10 so that the press-head effects the initial compression of the work. By a further movement of the lever 24 to the position b, live steam is admitted to the cylinder 9 and the compression of the work completed. On the completion of the working stroke, the lever 24 is returned to the position a, the steam supply cut off, and the exhaust valve 21 opened. The steam from the pipe 53 exhausts through the valves 59, 21.

公开(公告)号：FR381087A

公开(公告)日：1907-12-27

申请号：FR381087D

申请日：1907-08-22

Applicant: DAVY BROTHERS LTD SOC ,  THOMAS EDMUND HOLMES

Inventor： HOLMES THOMAS EDMUND

IPC: B21J9/12

公开(公告)号：FR355152A

公开(公告)日：1905-10-25

申请号：FR355152D

申请日：1905-06-10

Applicant: DAVY BROTHERS LTD SOC ,  THOMAS EDMUND HOLMES

Inventor： HOLMES THOMAS EDMUND

IPC: F16J15/18

公开(公告)号：GB190500781A

公开(公告)日：1905-08-31

申请号：GB190500781D

申请日：1905-01-14

Applicant: DAVY BROTHERS LTD ,  THOMAS EDMUND HOLMES

Abstract: 781. Davy Bros., and Holmes, T. E. Jan. 14. Fluid pressure hammers; valves and valve-gear; pumping- engines.-Consists in means for operating the distributing-valve of steam intensifiers for fluidpressure hammers, hydraulic presses, and the like so constructed and arranged that the handing lever is not subject to violent shocks, and in means for preventing the excessive travel of the main piston. Fig. 1 shows the application to an ordinary hydraulic press fitted with retracting-cylinders 6. The intensifier cylinder 8 is connected to the press cylinder 2 in the usual way, and the lowpressure pipe connects the cylinders 2, 8 with the air vessel 9 through the valves 11, 12. The intensifier ram 13 is integral with the rod 14 of the steam piston 15. The main controlling - valve 17 admits motive fluid from the pipe 18 to the cylinder 16 through the pipe 19 and to the lifting. cylinders 6 by the pipe 20 alternately, the exhaust fromeither passing through the passage 21. The pivoted-handing lever 22 actuates the stem 24 of the valve 17 through the " floating" lever 25, which is pivoted to the stem 24 and to the link 30, which connects it to a three-armed lever 35, in connexion with a weighted but otherwise similar lever 42 by a link 40 and a bar 31. This bar is arranged always to come in contact with a roller 32 attached to the rod 13, so that, assuming the valve 17 to have been depressed to allow the steam to force the piston 15 upwards and also to exhaust the cylinders 6, as the piston 15 reaches its upper limit the upper end of the bar 31 is forced outwards and operates the three-armed levers, and consequently causes the lever 25 to turn about the point 27 and so to close the valve 17 again. The ram 1 will thus be forced downwards ; to raise it again, the handing lever is moved in the opposite direction to that for the former movement, when steam flows from the pipe 18 through the pipe 20. The weight 41 has the effect of allowing the point 29 to be used as a fulcrum for the lever 25. The lever 22 may be operated by a small motor, as shown in Fig. 2, in which case the banding lever 46 operates a valve 45 connected to a " floating " lever 47. This lever is also connected to the arm 22, which in moving closes the valve. Means, comprising a cock 51 fitted on a by-pass 52 from the main steam-pipe 18, is also provided whereby when the press is required to work rapidly with short strokes a permanent cushion of steam may be maintained beneath the piston 5. To enable water to be withdrawn from the system, a pivoted lever 54 is arranged to be operated by the lever 22 when the latter is moved beyond,the normal position to admit steam to the lifting cylinders. The lever 54 is connected to the rod 58, which bears on the stem of the valve 12 and opens it.

公开(公告)号：DE478027C

公开(公告)日：1929-06-17

申请号：DEH0114657

Applicant: THOMAS EDMUND HOLMES

IPC: B21B35/14

公开(公告)号：GB131778A

公开(公告)日：1919-09-04

申请号：GB1650218

申请日：1918-10-10

Applicant: DUNCAN STEWART AND COMPANY LTD ,  THOMAS EDMUND HOLMES

Abstract: 131,778. Stewart & Co., D., and Holmes, T. E. Oct. 10, 1918. Rolling annular bodies. - A tyre-rolling mill with overhanging rolls R having their bearings B, O on opposite sides, has the upper roll bearings B, B vertically adjustable and connected by a parallel motion to keep the shaft A of the upper roll horizontal. Preferably the parallel motion comprises links F, levers D, E, and a link C. A hydraulic cylinder L and piston K applies pressure to the nearest bearing B to the upper roll, which is driven by a jointed shaft M. The shaft P of the lower roll is driven direct.