专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

11. 发明专利

GB694446A Improvements in or relating to safety guards for metal cutting shears or guillotines 未知
公开(公告)号：GB694446A
公开(公告)日：1953-07-22
申请号：GB2300250
申请日：1950-09-19
申请人： NORTHERN ALUMINIUM COMPANY LTD , OLIVER MARTIN THOMSON , GERARD JOSEPH LEA
IPC分类号： F16P3/00
摘要： 694,446. Machinery guards. NORTHERN ALUMINIUM CO., Ltd., THOMSON O. M., and LEA, G. J. Sept. 19, 1951 [Sept. 19,1950], No. 23002/50. Class 80 (iv). A guard for a metal cutting shears or guillotine comprises a frame 1, 5 having a portion 9 of transparent material, such as glass, through which the work can be viewed, one or more lamps 7 for illuminating the work and an opaque portion 6 for screening the lamps from the operator's eyes. The guard is adapted to be moved into and away from a guarding position adjacent the cutting edges of the machine by pivoting on trunnions 2, 3 and to be interlocked with the blades of the machine so that when the guard is open the blades are locked. The bottom edge of the guard is provided with a strip 11 of soft fibrous substance where it contacts the surface of the work.

12. 发明专利

GB573718A Improvements in or relating to waggons for draw-benches and like apparatus 未知
公开(公告)号：GB573718A
公开(公告)日：1945-12-03
申请号：GB2246145
申请日：1943-11-19
申请人： NORTHERN ALUMINIUM COMPANY LTD , WILLIAM WHITTLE
IPC分类号： B21C1/28
摘要： 573,718. Drawing-tongs. NORTHERN ALUMINIUM CO., Ltd., and WHITTLE, W. Nov. 19, 1943, No. 22461/45. Divided out of 572,429. [Class 83 (iv)] The wagon for a draw-bench tongs has retaining means that normally hold the hook clear of the chain, together with means for effecting release when desired. The hook 2 is pivoted about the axle 5 of the front wheels of the wagon and has a rearward extension 10 also pivoted at 5 and connected to the hook at 11 to move integrally with it. The hook is biassed towards the chain by gravity, but is restrained by the end 18 of a trip lever 13 pivoted at 14 on a bracket 15 carried by a lever 12 also pivoted at 5 and counterweighted at 20 to hold the hook in raised position. When the lever 13 is tripped, against a control spring 16,. either by hand or automatically, the hook falls and engages the chain. A finger 22 pivoted in a recess in the counterweight 20 so as to swing aside in one direction of movement, is operative in the other direction by engagement with a cam 23 to reset the trip 18.

13. 发明专利

GB572497A Improvements in or relating to drawbenches and like apparatus 未知
公开(公告)号：GB572497A
公开(公告)日：1945-10-10
申请号：GB515944
申请日：1944-03-20
申请人： NORTHERN ALUMINIUM COMPANY LTD , LESLIE GEORGE SHEPHERD
IPC分类号： B21C1/30
摘要： 572,497. Drawing. NORTHERN ALUMINIUM CO., Ltd., and SHEPHERD, L.G. March 20, 1944, No. 5159. [Class 83 (iv)] A draw-bench carriage is provided with means for cushioning the end of the return stroke and for ensuring that the tongs grip the work securely at the start of the next drawing operation. A roller 7 on the carriage engages the slotted end of a lever 1 pivoted at 3, towards the end of the return stroke. The lever is linked to a cross-head 10 on the rod 12 of a piston 13. Escape of air from behind the piston is controlled by an adjustable needle valve 15 according to the amount of cushioning desired. During movement of the lever 1, an adjustable cam 16 on it operates a lever, allowing an exhaust valve 18 for the other end of the cylinder 14 to close and opening a pressure supply valve 19. Pressure air does not, however, pass until a treadle-operated valve 24 is also opened. The carriage comes to rest with the lever 1 resting against a spring buffer 22, and the valve 24 is now operated, admitting air at 25 to means for pushing forward a new tube and mandrel so that the tag end passes through the die. At the same time pressure behind the piston 13 forces the lever 1 and consequently the carriage further back towards the die, compressing the buffer spring and bringing the trip rod 26 for the hook into contact with a stop 27, thereby permitting the hook to engage the chain. The drawing stroke of the carriage commences against the resistance of the lever 1 due to the air pressure in. the cylinder 14 and this ensures that the tongs take an immediate grip upon the tube. The carriage is constructed as described in Specification 572,429.

14. 发明专利

GB568973A Improvements in or relating to liquid receptacles such as melting pots and pouring pots or ladles 未知
公开(公告)号：GB568973A
公开(公告)日：1945-04-27
申请号：GB2035343
申请日：1943-12-06
申请人： NORTHERN ALUMINIUM COMPANY LTD , FRANK KING , FREDERICK WILLIAM ALAN WARD
IPC分类号： B22D41/04
摘要： 568,973. Melting pots or pouring ladles. NORTHERN ALUMINIUM CO., Ltd., KING, F., and WARD, F. W. A. Dec. 6, 1943, No. 20353. [Class 51 (ii)] [Also in Group II] A melting pot or pouring pot or ladle is shaped internally substantially in the form of a quadrantal segment of a cylinder. The pot may be provided with trunnions 2 at or adjacent to the apex of the segment. One of these trunnions may be hollow to serve as a pouring spout as in Fig. 1, or the pot may have a pouring spout 9 and a lip 8 as shown in Fig. 2. In another arrangement, the pot is mounted in a supporting cradle which may be so moved that the pot tilts about an axis parallel to and adjacent to the axis of the quadrantal segment forming its shape.

15. 发明专利

GB563717A Improvements in or relating to apparatus for handling material in sheet form, for example, metal sheets 未知
公开(公告)号：GB563717A
公开(公告)日：1944-08-28
申请号：GB1508242
申请日：1942-10-27
申请人： NORTHERN ALUMINIUM COMPANY LTD , BERNARD NORMAN HEATH THORNELY
IPC分类号： B21B39/04
摘要： 563,717. Sheet-handling apparatus. NORTHERN ALUMINIUM CO., Ltd., and THORNELY, B. N. H. Oct. 27, 1942, No. 15082. [Class 78 (i)] [Also in Group XXII] Apparatus for handling metal sheets &c., e.g. in rolling mills, comprises an endless band conveyer 1 driven by a motor 8 and disposed to receive the sheets on emergence from between a pair of pinch rolls 2, 3. Located on each side of the conveyer 1 are means for raising the sheets to an elevated inclined position from which they ride down by gravity to reach a set of supporting rollers 16 forming a platform 15. An adjustable stop 17 determines the final position of the sheets, which can be raised manually by the operator from the platform 15 and re-inserted in the rolls 2, 3 or otherwise disposed of. The elevating and tilting means consist of two pairs 10 of endless chains, arranged on each side of the conveyer 1 with one pair, of full height, at the head of the machine and the other pair, of less height, toward the roll end of the machine. The chains 10 pass round pinions 11 so that each chain follows a closed vertical path at one side and end of the conveyer 1, the plane of each path being at right angles to the length of the conveyer. The chains 10 are furnished with outstanding brackets which support beams 13 running lengthwise of the conveyer 1 and furnished with anti-friction rollers 14. The four bottom sets of pinions 11 are driven at uniform speed by an electric motor with gearing and shafting 22 so that the beams 13, after having been raised horizontally till they reach the level of the top of the lower pair of chains 10, continue to be raised at their head end and so assume an inclined disposition which permits the sheets to slide. The apparatus may be set in motion either by operator control or automatically, and stops may be provided to prevent undesired movement of the sheets while being raised:

16. 发明专利

GB555036A Improvements in or relating to the protection of polyphase alternating current or multi-wire direct current circuits or systems against failure of current in the supply lines 未知
公开(公告)号：GB555036A
公开(公告)日：1943-07-30
申请号：GB82242
申请日：1942-01-20
申请人： NORTHERN ALUMINIUM COMPANY LTD , VIVIAN SIMON
IPC分类号： H02H3/13
摘要： 555,036. Protective cut-out arrangements. NORTHERN ALUMINIUM CO., Ltd., and SIMON, V. Jan. 20. 1942, No. 822. [Class 38 (v)] A protective device for opening a polyphase circuit on failure of current in a line comprises means responsive to the p.d. set-up across a selected portion of that line when currentfailure occurs, to produce operation of an isolating device. In a simple form, Fig. 1 (not shown), the circuit of the hold-on coil of a main contactor controlling a motor includes normally-closed contacts of relay coils which are shunted across the several fuses in the lines so that. if a fuse blows, the corresponding coil will be energized to open the contacts and de-energize tne contactor coil. In Fig. 2, a pair of motors 18 controlled by starters 17 are fed from a supply through main and sub-fuseboards 20, 19, respectively, and from the supply side of 20, connections are led to a sub-board 25 and thence through separate circuits to the supply side of each starter. Each circuit includes a relay coil 24 controlling normally-closed contacts 28 in the circuit of the contactor-coil 29, and contacts 30 closed by a winding 31 in parallel with coil 29. If an open circuit occurs in the shunted part of any of the supply lines, the corresponding winding 24 opens the circuit of 29 to de-energize the motor and the circuit of winding 31 to deenergize the coils 24.

17. 发明专利

GB505090A Improvements relating to means for extruding or drawing materials with a polygonal cross-section 未知
公开(公告)号：GB505090A
公开(公告)日：1939-05-02
申请号：GB2995937
申请日：1937-11-02
申请人： NORTHERN ALUMINIUM COMPANY LTD , ERIC ALEXANDER PARRY
IPC分类号： B21C25/08
摘要： 505,090. Extrusion dies. NORTHERN ALUMINIUM CO., Ltd., and PARRY, E. A. Nov. 2, 1937, No. 29959. [Class 87 (ii)] [Also in Group XXII] A die for the extruding or drawing of material with a polygonal cross-section comprises a body enclosing a plurality of plates 8 slidably arranged edge to edge, the two edges .9, 10 of each plate which abut on the adjoining plates, defining an acuteangle between them and one of said edges serving as one side of a polygonal area 12 of the desired shape, the plates being adjustable in a rotary sense about the axis of the die for moving the plates relatively to one another to vary the size of the die opening. In one form, Figs. 1 and 2, the plates are mounted within a body comprising a back 1, a ring 3 and a front cover 2 bolted together by - bolts 4. The ring 3 has six internal surfaces 5 through which project adjusting or guide screws 7 for the plates. Adjustment of the plates to vary the size of the die opening 12 is effected by means of screws 20. The plates may be clamped by means of bolts 14 passing through slots 15 and 16 in the back and front portions 1 and 2 and through slots 13 in the plates 8. In a modified form, Fig. 3, the cover portion 2 is angularly adjustable for effecting the movement of the plates. Pins 24 screwed into the cover 2 pass through slots 25 in the plates and into sliding collars which run in arc-shaped grooves in the back portion 1. The cover 2 is rotated by means of a hand wheel 33 and worm. 30. The working edges of the plates are provided with hard metal facings 22 secured by screws 23.

18. 发明专利

GB744471A Improvements in casting machines and in methods of casting 未知
公开(公告)号：GB744471A
公开(公告)日：1956-02-08
申请号：GB2530152
申请日：1952-10-09
申请人： NORTHERN ALUMINIUM COMPANY LTD , FRED HOWITT
IPC分类号： B22D21/00
摘要： 744,471. Casting-machines. NORTHERN ALUMINIUM CO., Ltd., and HOWITT, F. Jan. 8, 1954 [Oct. 9, 1952], No. 25301/52. Class 83 (1). A casting-machine for light metal castings, wherein the metal dies 3, 4, 6, 9, 10 forming the mould are moved towards and away from each other mechanically, comprises means for passing cooling liquid through the dies. The machine is controlled automatically by a control system as in Specification 744,053 and, in casting aluminium pistons, the side dies 3, together with their associated top dies 4, are moved over the bed 1 of the machine by hydraulic cylinders and are guided by rails. The outer core-dies 10 are then moved apart and the inner core-die 9 introduced between them by a hydraulic cylinder, the carriages for the dies 10 being connected with the die 9. The dies 6 for the gudgeon-pin bore are next inserted in the dies 3 to complete the assembly, to which cooling- water is then introduced under control of an electronic timer started automatically and operating electromagnetic valves to start and stop the coolant. The timer may be operated direct from a uni-selector switch 21 (Fig. 2, not shown) or through a pyrometer in one of the dies, as in Specification 744,053, the pyrometer also starting an electronic.. timer which opens the dies after the casting operation. The water circulates through tubes .7, 11 in the dies 6, 9 and returns around the outside of the tubes, through tubes 14, 15 supplying chambers 13 in the dies 4, and through passages 17, 8 in the dies 3 and tubes connected to the passages 8 and leading from the dies 3 to enable the flow to be observed. The metal is poured by hand through an inlet 19 eccentric of the mould, the walls of the cooling-chambers of which are profiled to provide a roughly uniform rate of cooling over the whole casting, and the supply of water is controlled to provide the same degree of cooling for each casting. The Provisional Specification also refers to levers with ballshaped formations for opening the mould, and to a connection between the cooling-chambers in the gudgeon-pin-bore dies and those in the side dies.

19. 发明专利

GB647650A Improvements in or relating to fluid seals for relatively movable members 未知
公开(公告)号：GB647650A
公开(公告)日：1950-12-20
申请号：GB2868347
申请日：1947-10-27
申请人： NORTHERN ALUMINIUM COMPANY LTD , ARTHUR ACTON KAYLL
IPC分类号： F16J15/46
摘要： 647,650. Stuffing- box substitutes. NORTHERN ALUMINIUM CO., Ltd., and KAYLL, A.-A. Oct. 27, 1947, No. 28683. [Class 122(v)] In a seal between two relatively rotating parts 6, 12, comprising an inflatable ring 1 in the form of a continuous hollow tube having a cross section which narrows in width toward the bore of the ring, a rigid sectional casing 4 on the relatively rotating part 6 and providing an annulus within which the inflatable ring is trapped with the narrow inner part of the ring extending inwardly beyond the annulus, and a circumferentially contractible sealing ring 11 encircling the relatively rotatinig part 12 and enclosed within and contacted by the bore of the inflatable ring 1, the sealing ring is of segmental form with adjacent segments of the ring provided with tongue and groove joints and is gapped on one side opposite at least one tongue and grove joints and is gapped on one side opposite at least one tongue and groove joint to receive a sidewardly projecting portion 17 of a retaining plate 15 mounted on the casing 4 to prevent rotation of the sealing ring.

20. 发明专利

GB554145A Improvements in or relating to the control of processes of which the rate of variation of the essential factor with respect to time varies with time 未知
公开(公告)号：GB554145A
公开(公告)日：1943-06-22
申请号：GB164042
申请日：1942-02-07
申请人： NORTHERN ALUMINIUM COMPANY LTD , WILLIAM WILSON HORSBURGH
IPC分类号： B01D37/04
摘要： 554,145. Controlling filtering processes. NORTHERN ALUMINIUM CO., Ltd., and HORSBURGH, W. W. Feb. 7, 1942, No. 1640. [Class 46] [Also in Groups XXIX, III and XXVIII] A device for use in controlling a process in which the rate of variation of an essential factor varies with time, comprises two elements moved at right angles to one another one at constant velocity and the other at a velocity varying with the rate of variation of the essential factor, a member moved by the elements, and means actuated by a change in the direction of movement of said member for exerting control or giving a signal. Examples of processes to which the invention is applicable are those comprising mass action, filtration or distillation, and those in which one function is asymptotic to another. The apparatus shown with the parts in their initial positions comprises blocks 2, 4 and a member 1 which is pivotally connected to the blocks and is also slidable with respect to the block 4. During filtration, the block 4 is moved to the left by a cord 7, drum 8a, and clockwork, and the member 2 is raised by a rod 6 connected to a float in the filtrate receiving chamber, thus causing a weighted block 12 to be raised, pawls 15 on the block slipping over ratchet teeth on a bar 17 pivoted to a counterbalanced lever 19. When the delivery rate of the filtrate falls off, the direction of movement of the member 1 is reversed, the bar 17 is moved down, a trigger 21 is moved, and the weighted bell crank lever 24 swings the bar 17 to operate a valve 29, or other means, e.g. an electric relay, to cause a signal to be given or filtration to be stopped.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式