baber/WOPTO huggingface dataset:
Patent GB-537251-A (GB)
Title: Improvements in or relating to selenium rectifiers and improved method of producing the same
IPC: H01L21/10
Filed: 1939-06-29
Abstract: 537,251. Coating with selenium. NURNBERGER SCHRAUBENFABRIK GES. June 29, 1939, No. 18949. Convention date, June 1. [Class 82 (ii)] [Also in Group XXXVI] A thin layer of selenium in a plastic amorphous state at 160‹-170‹C. is applied to a foil of aluminium, for example, cooled, and the selenium face applied to an electrode plate, such as of nickel-plated iron, rolled to level off the layer and remove air, heated preferably to about 170‹C. to effect the crystallization of the selenium and stripped of the aluminium foil; surface amorphous selenium is then removed by vaporising at 215-219‹C. and finally a counter-electrode sprayed on, for example, of an alloy of zinc and cadmium, at such a temperature that a granular layer is produced. Specification 522,755 is referred to.
Patent GB-599192-A (GB)
Title: Improvements relating to the tuning of cavity resonators for electric oscillations
IPC: H01P7/06
Filed: 1944-10-03
Abstract: 599,192. Electric resonators. BRITISH THOMSON-HOUSTON CO., Ltd., and SCOTT, W. J. Oct. 3, 1944, No. 18954. [Class 40 (iii)] A cavity resonator is axially asymmetrical so that its resonance frequency varies when it is rotated upon the wave-guide 4 with which it is coupled. The resonator comprises a cylinder 2 which can be rotated in a cylindrical seating 10 and fixed by means of a clamp 11. It is separated from the seating 10 by a half-wave ditch or choke 5 which gives a radio-frequency short-circuit at the surface of the wave-guide. The resonant cavity 1 communicates with the wave-guide through a glass window 3 which is hermetically sealed by a process such as that described in Specification 572,020, [Group X]. It is bounded by a plug 6 with a hermetic seal at 6<1> and a rejector labyrinth 14 for preventing loss of energy and a bore 9 through which the cavity may be filled with an inert gas such as neon with 0.1 per cent of argon at a pressure of 5 c.m. of mercury. Axial asymmetry is introduced by sloping the lower face of the plug 6, by forming a diametrical slot or a ridge of insulating or conducting material thereon, by making the interior surface of the wall 2 eliptical, or by flattening one side of the cylindrical surface, so that the rotation of the cavity varies the angle between its planes of symmetry and the plane of the exciting field in the wave-guide 4.
Patent GB-237733-A (GB)
Title: Improvements in rotary type duplicating machines
IPC: B41L15/06
Filed: 1924-08-09
Abstract: 237,733. Storey, W. H. Aug. 9, 1924. Printing-surfaces; holders for loose types.-The segment to which the types are attached in rotary tvpe duplicating-machines is secured to the cylindrical end flanges of the machine by means of hooks pivoted on a shaft mounted in the flanges and adapted to be rotated to move the hooks into or out of locking position by engagement, during rotation of the machine, with a spring- pressed plunger. The segment 10 is provided with a key or keys 16 adapted to enter a slot or slots 17 in the flanges 12, and with projections 18 carrying pins 19 adapted to be engaged by the hooks 26 pivoted one at each end of a shaft 20 and normally held in locking position by springs 27. Secured to each end of the shaft 20 is a collar 24 provided with a projection 25 adapted to engage under the adjacent hook and lift it out of engagement with the pin 19. A cam 21 is also secured t'o one end of the shaft 20 outside the flange 12, and is under the influence of a spring 29 attached to a pin 30 on the flange, and a plunger 22, mounted in the frame 15 of the machine, is adapted to be pressed, against the action of a spring, into the path of the cam as it is rotated with the flange 12 on the shaft 13. To attach a segment to the machine, the plunger 22 is depressed and the machine is given a slight backward rotation. The cam 21 is thereby engaged by the plunger and caused to rotate the shaft 20 and collars 24 to disengage the hooks 26. A stop is provided in order to arrest the backward rotation when the machine is in the most convenient position for attaching the segment. The segment is then placed in position, and the machine is rotated forwardly to allow the hooks to engage over the pins 19. The machine may be modified so that forward instead of backward rotation may be employed for effecting the attachment of the segment'.
Patent GB-875902-A (GB)
Title: Method for producing and moulding plastic materials having a gaseous ingredient
IPC: A23D7/02
Filed: 1959-06-03
Abstract: 875,902. Aerated food fats. CHEMETRON CORPORATION. June 3, 1959 [June 23, 1958], No. 19019/59. Class 84. [Also in Group V] Pats of plastic material e.g. margarine, which incorporate a gaseous ingredient are formed by mixing with the material ingredients at high pressure a volume of gas, passing a portion of the aerated mixture into a moulding apparatus and allowing it to undergo a first expansion to a lower pressure, segragating said portion from the other material, and permitting said portion to undergo a second expansion to atmospheric pressure to form an accurately sized pat of pre-determined specific gravity. Liquid margarine ingredients comprising 2,600 parts by weight of selectively hydrogenated vegetable oil, 530 parts by weight skimmed milk, 100 parts by weight of salt, 5 parts by weight of emulsifier, 5 parts by weight lecithin, and 2 parts by weight of yellow food colouring are mixed in a tank 10, passed through conduit 16, aerated by a gas such as air or nitrogen from tank 19, and passed at about 300 p.s.i.g. and at 108‹F. through a cooling apparatus 24 to a tempering apparatus 38. From thence at about 75 p.s.i.g. the mixture passes through conduit 55 to an accumulation zone which leads on one side through conduit 57 to a moulding head 58, and on the other to a piston-loaded compensator. The head 58 is rotatable and has moulding compartments comprising cylinders 82, 83 and blocks 80, 81 which are intermittently fed from conduit 57 the average pressure in which is about 35 p.s.i.g. With block 80 and conduit 57 in register, block 80 is moved inwardly under said pressure to form pat 71 and through rigid coupling 84, a previously moulded pat 70 is carried from cylinder 83 to a wrapper wheel. Head 58 is then rotated a quarter turn, and blocks 80, 81 uncoupled, whereupon 71 swells, is reduced to atmospheric pressure, and removed upon further rotation similarly to pat 70. Before pat 71 is moulded blocks 80, 81 may be uncoupled, block 80 moved inwardly by the pressure of the material, the blocks recoupled, and moved outwardly to the position of Fig, 6 (not shown). Pats of lard, shortening, soap, waxes, and reconstituted butter may be prepared similarly. Specification 831,662 is referred to.
Patent GB-682892-A (GB)
Title: Process and machine for the production of rotors for turbines, compressors and the like
IPC: B23D3/04
Filed: 1950-07-31
Abstract: 682,892. Planing; turning; making turbine blades. FISCHER AKT.-GES., G. July 31, 1950 [Nov. 16, 1949], No. 19062/50. Classes 83 (ii) and 83 (iii). Blades are formed in a turbine or compressor rotor d by a planing or turning tool h which is moved linearly to and fro while the rotor is oscillated or continuously rotated about one of its diameters; as described, two tools are used, so that the front and back of each blade is formed simultaneously. The rotor d is mounted with its axis horizontal in a support c on a turntable b and the tools h are mounted in guides g in heads f which are moved vertically by cams q to provide feed. The to-and-fro motion of the tools, in the direction of the arrows l, is controlled by cams o operating followers v linked to the tool holders r. In addition to the oscillating or rotary motion of the turn-table, indicated by the arrow k, a superimposed rotary motion, progressive as the tools feed downwards, may be given to the support c by adjustable gearing, in order to produce twisted blades. The tools are rotatable by cam mechanism (not shown), about an axis passing through the tool-cutting edges, in the directions indicated by the arrows m, so that the tools are maintained at the correct cutting angles. If the turn-table is oscillated, the tools are relieved from the work on the return stroke or, if it is continuously rotated, the tools are withdrawn from the blade slot at the end of the cutting stroke and returned to their starting positions by the cams p.
Patent GB-1470134-A (GB)
Title: Apparatus for producing hollow articles from hot-mouldable plastics material
IPC: B29C49/06
Filed: 1975-05-07
Abstract: 1470134 Injection blow-moulding MASCHINENFABRIK JOHANN FISCHER 7 May 1975 [16 May 1974] 19093/75 Heading B5A Injection blow-moulding apparatus comprises fixed injection and blow moulds 15, 20, Fig. 1, with their principal axes parallel, and mandrels 191 which serve as a mould core in the injection mould and a blow mandrel in the blow mould are mounted on a carrier 19 which is rotatable about an axis parallel to the principal axes of the moulds and which is mounted on a platform 17 which is reciprocable towards and away from the moulds by a linear motor 14, 141 which is coaxial with and effects closure of the injection mould 15. In the illustrated embodiment there are six mandrels 91 on the carrier 19 and the carrier is rotated intermittently through 60 degrees by a detent mechanism, there being three temperature control stations between the injection mould 15 and the blow mould 20.
Patent GB-504686-A (GB)
Title: Improvements in or relating to electric switches
IPC: H01H29/16
Filed: 1938-06-28
Abstract: 504,686. Switch contacts. BARTSCH, W. June 28, 1938, No. 19115. Convention date, July 8, 1937. [Class 38 (v)] In order to prevent oxidation of the mercury in mercury switches it is contained in air-tight chambers communicating by a capillary channel in which slides a fine rod acting as a contact piece. In the arrangement shown the chambers 4 are formed by the combination of blocks 1, 2, 3 which are held together by a flanged sleeve 19 passing through them. The chambers 4 are connected by passages 15 having a base of about 0À3 mm. diameter in which slide rods 16 connected to heads 17, 17<1> on a rod 18 sliding in the sleeve 19. The rods 16 are of such length as to penetrate both masses of mercury in the chambers 4 of a pair or one only in accordance with the motion of the rod 18. Leads 13 are connected to the mercury in the chambers 4 by means of plates 5, 6, 7, 8, arranged between the blocks 1, 2 and 2, 3. The plates 5, 6 penetrate into the mercury in one pair of chambers and the plates 6, 8 into the mercury in the other pair. The plates are about 0À1 mm. in thickness so that the mercury will not enter the slot containing the plate which is not intended to be connected to a particular chamber, or this slot may be filled with insulating varnish. The ends of the chambers 4 are tapered at an angle of about 45 to assist in preventing the mercury from entering the channels 15. An arrangement of blocks containing several pairs of chambers is also described.
Patent GB-1149382-A (GB)
Title: A process for evaluating a property of a plurality of chemical substances
Inventor: LOEBL HERBERT
IPC: G01N35/02
Filed: 1965-05-07
Abstract: 1,149,382. Sampling liquids. JOYCE, LOEBL & CO. Ltd. 2 May, 1966 [7 May, 1965], No. 19305/65. Heading B8N. [Also in Divisions B1 and G1] The colour, density or concentration of treated biological samples is evaluated by a photo-meter, the initial samples being transferred individually and automatically from a first set of containers to a second set of containers, with the addition of one or more reagents, by means of one or more pipettes, and the prepared samples then being subjected to heat or centrifuge treatment (if this is required) before being passed sequentially through the photo-meter. In the illustrated embodiment, the various samples contained in tubes 6 are placed sequentially in an outer ring holder 7 which is located on the table 10 of rig. 1. Inside ring holder 7 is a ring holder 8 carrying sample receptacles such as 9 (rig. 2). A pipette 11 extracts a quantity of sample fluid from each tube 6 as the table 10 rotates step-by-step, and transfers the sample to the corresponding receptacle 9 together with a quantity of reagent or cleaning fluid from reservoir 16. An electric motor drives the table and the pump 13 for the pipette action. The apparatus for transferring samples from one set of tubes to another is described in detail, together with various modifications, in Specification 1,149,383. The holder 8 is next transferred to a centrifuge or oven and then placed in rig 2 for the addition of a further reagent to the samples by pipette 17, though sometimes this step may be omitted. In rig 3, supernatant or clear portions of liquid, free of sediment &c. are transferred from the receptacles 9 of the inner ring holder 8 to three of an outer ring holder 21, which is then transferred to rig 4. Here the samples are extracted in turn by pipette 26 for evaluation by the photo-meter 5. Photo-meter.-The photo-meter is described in detail in Specification 1,149,384. It is of the double beam type in which a photo-cell receives light alternately through the sample cuvette 30 and through a graduated motor-operated wedge, a servomotor receiving the output of the cell to move the wedge to equalize the two outputs and also controlling a pen 32 which records the transmissivity of the sample on a moving sheet 33. A first part of the sample is passed through the cuvette for washing purposes, then the rest for evaluation, the pen then being started one second after the evaluation liquid has been introduced, in order to avoid a misleading record. Digital information is printed on a moving sheet 35 and/or punch cards or tape may be produced carrying information as to the sample properties. Modifications.-Extra pipettes can be provided on the rigs to enable addition of more than one reagent or different reagents for different type of samples. Instead of refilling the single cuvette 30, samples may be introduced into individual cuvettes which are passed through the photo-meter sequentially.
Patent GB-530774-A (GB)
Title: Method and apparatus for washing surfaces
IPC: B08B3/02
Filed: 1939-07-03
Abstract: 530,774. Cleaning buildings & c. JACKSON, L. MELLERSH-. (Sellers & Co., Inc., W.). July 3, 1939, No. 19346. [Class 138 (i)] [Also in Group XXVIII] For cleaning surfaces, steam is supplied through an inlet e and an annular passage in the nozzle c, and induces a stream of water through an inlet h and an annular passage between this nozzle and a combining tube f through which and through a discharge tube s with a restricted outlet o, the mixture is delivered. An axial solvent supply tube b allows oil, sodium phosphate &c. to be drawn into the mixture at a point where a vacuum obtains. Overflow slots o and valve k are provided. The minimum area B of the steam passage is 3¥-4 times the minimum area A of the delivery tube, the minimum area C of the water inlet is 4¥-5 times the area A, and the area of the overflow slots o and the slot o<SP>1</SP> between the combining and delivery tubes is 8-9 times the area.
Patent GB-627370-A (GB)
Title: Improvements in travellers for ring spinning and twisting frames
IPC: D01H7/60
Filed: 1947-07-21
Abstract: A traveller for a textile ring spinning or twisting frame is made with a wearing surface comprising a plasticised cellulose ester.  The traveller may be made wholly of a cellulose ester or may have a metal core coated with the material.  Preferred esters are cellulose nitrate, cellulose acetate, cellulose acetate butyrate and mixed cellulose esters.  Specifications 565,848, [Group IX], and 627,157 are referred to.
Patent GB-130872-A (GB)
Title: Device for Shaving and Stropping Combined.
Inventor: RICE DUNCAN
IPC: B26B21/50
Filed: 1918-11-26
Abstract: 130,872. Rice, D. Nov. 26, 1918. Stropping-apparatus. -A safety-razor combined with a stropping- device comprises a boxlike frame b carrying a pair of stropping-rollers c rotated by a handle g, the upper roller being pressed downwards by spiral springs or by a bow spring h adapted to be adjusted by a screw h<1>. For shaving, the blade is placed so that holes in it engage projections d on a sloping bed b<2>.
Patent GB-1208229-A (GB)
Title: Method of repairing a bladed rotor
Inventor: VINCE REGINALD THOMAS
IPC: F01D5/00
Filed: 1969-04-16
Abstract: 1,208,229. Rotors; axial flow compressors. ROLLS-ROYCE Ltd. April 16, 1969, No. 19439/69. Headings FIT and F1C. [Also in Division G1] A method of repairing a bladed rotor, e. g. a gas turbine engine compressor rotor having synthetic resin blades, comprises removing a damaged blade and the two immediately adjacent undamaged blades from the rotor, determining a mean moment value corresponding to the mean moment of the two undamaged blades about the rotor axis using a test device, selecting a replacement blade having a moment value substantially the same as the mean value, and remounting the selected blade and the two adjacent blades on the rotor. The method ensures that the rotor balance is not upset by the repair. The test device comprises a blade support member 2 which is pivotally mounted on trunnions 3 carried by a frame 4 fixed to a bed 5. The member 2 has a dovetailed slot 6 to receive the root 7 of the compressor blade 8 whose moment is to be assessed. The distance 11 between the axis of the trunnions 3 and the base 10 of the slot 6 is equal to the distance between the compressor rotor axis and the base of a blade mounting slot in the rotor. Springs 12 are provided between the slot base 10 and the root 7 to force the blade 8 into a position corresponding to that which it adopts under centrifugal force when the rotor is rotating. The member 2 is hollow and houses a lamp 13 which is electrically connected to a switch 14 and battery 15. The lamp filament produces a V-shaped beam of light which is directed through a member 16 and projected by a lens 17 on to a scale 18 marked on a transparent panel 20. The position of the patch of light on the scale 18 thus depends upon the moment exerted by the blade 8 about the axis of the trunnions 3. The frame 4 carries an adjustable torsion spring 23 acting in the opposite direction to the blade moment. The support member 2 can be locked in a horizontal position by a taper pin 27. The test device enables the mean moment of the two undamaged blades to be measured as a mean reading on the scale 18 and for a replacement blade to be selected having a moment substantially the same as the mean value. If the selected blade has a moment slightly greater than the mean value then a compensatory amount of material can subsequently be removed from the locking device employed to lock the blade to the rotor.
Patent GB-975979-A (GB)
Title: Improvements relating to data storage
Inventor: MEGGITT JOHN EDWARD
IPC: G11B5/52
Filed: 1962-05-22
Abstract: 975,979. Disc record data storage apparatus. IBM WORLD TRADE LABORATORIES (GREAT BRITAIN) Ltd. Jan. 10, 1963 [May 22, 1962], No. 19591/62. Heading G5R. Arcuate tracks 64 Fig. 3 on a magnetic disc 12 are scanned by rotating the disc and a head 60 about axes 16, 44 respectively the head being maintained in constant orientation with its track on the axis 62 by gears 52, 54, 56 in the inverse direction to the relative rotation of transducer and disc along the track. The head is only operational for 120 degrees of each successive track circuit to avoid overlapping, and improved track packing-density may be achieved near the centre of the disc, Fig. 4 by varying the start of the operational sector. In an alternative embodiment, Fig. 5, the head is aligned, not by rotation about the axis 62 (Fig. 1) but by a parallel-linkage movement. The precession of the tracks by incremental rotation of a gear coupled to a differential 26, or by a stepping motor included between 24 and 38, is claimed in Specification 975,978. Multiple head-driving arrangements may be used. A single head may be precessed by making the drive ratios for head and disc slightly different from unity.
Patent GB-784887-A (GB)
Title: 'spot-type' disk brake
IPC: F16D55/2255
Filed: 1955-07-07
Abstract: 784,887. Disc brakes. TEVES, H., and TEVES, E. A., [trading as TEVES MASCHINEN-UND ARMATURENFABRIK KOMM. GES., A.]. July 7, 1955 [Aug. 10, 1954], No. 19700/55. Class 103 (1). In a " spot-type " disc brake two axially movable friction lining carrying pressure plates 2, 3 are provided one on each side of a rotatable brake disc 1; pressure plate 2 being secured to a pin 4 sliding in a stationary brake carrier 7, a piston 5 secured to pin 4 being slidably received in each of two axially displaceable wheel brake cylinders 6, 12 to which is secured the friction lining carrying pressure plate 3. When hydraulic fluid is fed into annular space 11, the piston 5 of each wheel brake cylinder is displaced to the right, together with pin 4, causing the brake lining carried by pressure plate 2 to be pressed against brake disc 1, and the wheel brake cylinders together with pressure plate 3 are displaced to the left to bring the friction lining carried by the latter into frictional contact with the brake disc 1. Mechanical actuation of the brake is achieved by providing brake levers 8 and 13 arranged rotatably and axially displaceably about piston-rod 9 and communicating through balls 17 arranged in conical cut-outs 15 with brake cylinders 6 and 12 likewise provided with conical cut-outs 16 on the adjacent side.
Patent GB-771774-A (GB)
Title: Improvements in and relating to bakers' electric ovens
IPC: A21B3/00
Filed: 1955-07-08
Abstract: 771,774. Bakers' ovens. RUSH, S. H. July 8, 1955 [Sept. 15, 1954], No. 19811/55. Class 51 (2). [Also in Group XIII] A double deck electricallyheated bakers' oven 1, has dampers 3 and 4 controlling rear openings 8 and 9 communicating with the jacket space 10 surrounding a hot water boiler 5, the space 10 communicating with a waste steam pipe 15 controlled by a damper 30 and opening into a canopy 24 at the front of the oven and connected at one end to a flue 26. The boiler feed water from a tank 16 is preheated by passing through a base 17 disposed in the pipe 15 and/or through a copper pipe 18 disposed in a support pipe 20 in the upper oven chamber. A drain channel 21 suspended below the pipe 20 extends downwardly into the opening 3. The boiler 5 may supply radiators in the bakery or may be used to steam the bakery atmosphere. The oven chambers may be flooded with steam from the boiler 5 via the space 10 and the openings 8 and 9, by slightly opening the oven doors 25, closing the waste pipe damper 30, and opening the boiler to the space 10 by a valve (not shown). Similarly, in the event of a power failure, the heat in the oven chambers may be maintained without serious loss by connecting the hose 17 to a fuel-heated auxiliary boiler, the steam in the space 10 being then heated from the boiler 5.
Patent GB-923554-A (GB)
Title: Coil for induction furnaces without water-cooling
IPC: H05B6/36
Filed: 1960-06-07
Abstract: 923,554. Electric induction furnace coils. ZAVODY ELEKTROTEPELNYCH ZARIZENI, (ZEZ) NARODNI PODNIK. June 7, 1960 [June 5, 1959], No. 19892/60. Class 39 (3). A coil for induction furnaces without watercooling comprises a plurality of identical sections arranged coaxially in parallel planes, said sections being connected to the current source so as to form a number of parallel-connected branches each comprising a number of seriesconnected sections. The coil shown comprises six sections separated by air gaps 4 maintained by micanite spacers (not shown) and connected to form three branches in parallel across busbars 2, each branch comprising two sections connected in series by a lead 3. Each section (Fig. 5) comprises a spirally wound copper strip insulated by a band of micanite between the turns and encased in a band of fibre glass and micanite impregnated with silicon varnish, with an optional further winding of fibre glass. The inner lead 6 from the section is insulated by a flat micanite tube 11 and is provided with cooling fins 12.