baber/WOPTO huggingface dataset:
Patent GB-1301033-A (GB)
Title: Fluid flow regulating apparatus
Inventor: HILDEBRANDT H J
IPC: A61M5/168
Filed: 1970-05-08
Abstract: 1301033 Automatic flow control GENERAL ELECTRIC CO 8 May 1970 [13 May 1969] 22335/70 Heading G3R In a system for automatically controlling the rate of drip in a fluid drip chamber, photoelectric means produce control pulses corresponding to each drop and, after each pulse, the production of a succeeding pulse is prevented for a predetermined period to eliminate the effect of trailing secondary drops. In Fig.1, intravenous feeding fluid is supplied from a flask 11 to an injection needle 15 through a disposable kit including flexible tubing 13 and a drop chamber 17. A photo-cell 33 responds to light passing through the chamber from a source 35 so that pulses synchronized with the drops are produced by a transistor circuit 39 which is compensated for light intensity variations by a photo-cell 37 and includes feedback associated with a resistance-capacity network so that for a short period after each pulse the circuit is unresponsive e.g. to small trailing secondary drops. A desired rate of drip is set by adjusting a resistance-capacity charging circuit 45 which is periodically discharged by a slightly delayed circuit 47 controlled by pulses from a one-shot multi-vibrator 61 triggered by the drop pulses. Circuit 45 produces saw-tooth voltage of predetermined amplitude if the drops occur at the correct time instants. The amplitude of each saw-tooth is compared at 49 with a voltage corresponding to the predetermined amplitude so that a signal corresponding to the sense of any error is produced at 51 and a signal corresponding to the magnitude of the error produced at 53 to determine the length of pulses produced by multi-vibrator 61. The output of the latter is also applied through a gating circuit 59 to determine the period of operation of a switching transistor 27 or 29 as selected by a flip-flop circuit 57 according to the sense of error at 51. A split-field synchronous motor 25 is thus caused to run for a period corresponding to the magnitude of the error in the appropriate direction to correct the error by adjusting a cam 23 which squeezes tube 13 against the action of a spring 19. Error pulses of less than a predetermined duration are unable to produce operation of motor 25 so that the system has an inherent dead band. If the error becomes unduly large, e.g. following a change of drip rate setting, control initiating pulses additional to those produced by the drops are produced by a circuit 55. Should the drips become a steady stream, or light source fail, or the level of fluid in the bottom of the chamber as detected by a photo-cell 41 become too low, circuit 39 becomes oscillatory and a circuit 67, responsive to the higher frequency, operates switch 27 to cause motor 25 to reduce or stop the flow of fluid and give warning as necessary. Manual control of motor 25 to open the tube initially is provided. Suitable transistor circuits are described in detail.
Patent GB-757769-A (GB)
Title: Improvements in or relating to cracking hydrocarbon oils
IPC: C10G51/06
Filed: 1954-08-04
Abstract: <PICT:0757769/III/1> Hydrocarbon oils such as whole-, topped- or reducedcrudes are treated to obtain naphtha and coke by first distilling the oil to separate gas oil and heavy bottoms, submitting the gas oil to cracking in the presence of fluidized particles of of cracking catalyst, coking the bottoms in the presence of a dense fluidized bed of hot inert solid particles, and introducing the effluent vapours from the cracking unit and from the coker into a common fractionator from which naphtha is withdrawn as product while the bottoms material is passed to the coking zone.  Topped crude is fed through line 10 into vacuum tower 11.  The vapours passing overhead from the tower are condensed; and the condensate is introduced through line 21 into vessel 100 which contains hot fluidized cracking catalyst, supplied through line 102.  The bottoms residuum from tower 11 is lead through lines 23 and 25 to coking vessel 35 which contains a bed of coke particles (50 to 400 microns average diameter) at 900 DEG -1500 DEG F. fluidized by steam introduced through line 48.  The residuum is injected into the fluidized bed through nozzles 31 and 33.  The vapours withdrawn from vessels 35 and 100 are united in line 55, and introduced into the lower part of fractionator 50.  The liquid in the bottom of the fractionator is quenched to keep its temperature below about 700 DEG F. to avoid coking.  Naphtha and gas oil are withdrawn from the fractionator through lines 93 and 95 respectively, and light gases are taken off overhead.  The gas oil is sent to the catalytic cracking vessel 100.  The bottoms withdrawn from the base of fractionator 50 are passed through line 97 to the coker. Coke particles, carrying fresh coke deposits, are withdrawn from the coking zone into stripping zone 37, which is supplied with steam through line 59.  The finer particles then pass through coarse screening device 63 into line 65, and are conveyed by steam up standpipe 71 into heater 47.  Large coke particles are withdrawn from the system through valves 69 and 70.  Oxidizing gas is introduced into heater 47 through line 77 in order to fluidize the particles and raise their temperature by combustion of coke.  The heat of combustion may, if desired, be supplemented by hot fuel gas introduced through line 79.  The heated particles flow over a notched weir 85, and are returned to the coker through lines 89 and 45.  In an alternative embodiment, vacuum tower 11 may be dispensed with; the fresh feed is then introduced into fractionator 50 through line 90.
Patent GB-871437-A (GB)
Title: Induction coupling devices
Inventor: BANCROFT NORMAN ROY
IPC: H02K49/04
Filed: 1958-07-15
Abstract: 871,437. Electromagnetic brakes and couplings. PYE Ltd. June 29, 1959 [July 15, 1958; Aug. 19, 1958], Nos. 22626/58 and 26633/58. Class 35. An induction coupling device comprises a magnetic rotor 2, 3 having polepieces 4 projecting towards a coaxial magnetic stator 10 from which it is spaced by an annular air gap 7, an electrically-conductive non-magnetic rotatable member 6 having a cylindrical portion 6a in the air gap 7, and means for producing a toroidal magnetic field which passes once only through the gap and returns via a further core 11. As shown, the means comprises one or more coils 14 excited by either direct or alternating current but alternatively may comprise one or more permanent magnets. As applied to a coupling either of the two shafts 1, 5 may be the respective input and output shafts, whilst when functioning as a brake the shaft 1 may be restrained and the load to be braked is connected to the shaft 5. The device is cooled by a fan 15, and the coupling or braking effect may be varied by adjusting the coil exciting current or the position of the permanent magnet or as shunt. The stator ring 10 may be laminated. Specification 871,438 is referred to.
Patent GB-268221-A (GB)
Title: Improvements in or relating to apparatus for polishing floors
IPC: A47L11/162
Filed: 1926-09-14
Abstract: 268,221. Tweddle, N., and Whitfield, H. Sept. 14, 1926. Floors, cleaning.-A rotary brush c is secured to the shaft a of an electric motor b and a stationary annular brush f is secured by a plate d to the body of the motor. The bristles of the brush c are held clear of the floor when the apparatus is not in use. A forked handle j is pivotally mounted on a strap g on the motor, and its movement is limited by stops k.
Patent GB-1498222-A (GB)
Title: Vibration isolation in helicopters
IPC: B64C27/00
Filed: 1975-05-23
Abstract: 1498222 Vibration damping structures; linkwork TEXTRON Inc 23 May 1975 [3 June 1974] 22677/75 Headings F2S and F2K [Also in Division B7] A vibration-damping structure for interconnecting the lift unit (motor 11, rotor shaft 10, rotor blades 12, 13, Fig. 1) and the fuselage of a helicopter comprises (Fig. 4) at least one composite beam 102, 103, 104 having at opposite ends anchor points 100, 101 for fixing to the fuselage (via brackets 107, 108), the beam having rigid end members 102, 103 and a laminated central flexible element 104; and two rigid support links 109, 111 for carrying the lift unit pivotally attached to the end members 102, 103 at points 110, 112 intermediate the points 100, 101. Vertical vibrations of the rotor shaft 10 (represented by arrow 22 in Fig. 1) are transmitted through the links 109, 111 to the composite beam 102, 103, 104 resulting in oscillatory bending of the flexible section 104. No vibration is transmitted through the anchor points 100, 101 to the fuselage. The flexible section 104 consists of a stack of spring steel plates (91, 95, Fig. 3, not shown) with rubber layers (92) bonded between them. Each end of the flexible section 104 is received in a recess 105 of the rigid end member and supported between elastomeric blocks (94, 96) one sliding sliding and one bonded. The frequency of the composite beam can be adjusted by applying a load to arm 106. The lift unit may be mounted (Fig. 2, not shown) on two of the structures shown. Alternatively (Fig. 5, not shown) one composite beam may carry four support links. In the embodiments of Figs. 2 and 5 the structure incorporates torque links which transmit torques in a horizontal planes from the rotor shaft 10 to the fuselage.
Patent GB-496700-A (GB)
Title: Improvements relating to screw and like propellers
IPC: B63H1/12
Filed: 1937-08-19
Abstract: 496,700. Screw propellers. WAWN, A. Aug. 19, 1937, No. 22768. [Class 114] A screw-propeller blade is provided with an incurved rearwardly projecting lip extending along the middle portion of the trailing edge. The lip a, formed in one with the. blade c, extends backwardly in the direction of the driving face f, the lip g being a flattened convex arc following the lines of the trailing edge band transversely has an outer convex curve h and an inner convex curvature which merges into the face f. Alternatively the lip a<1> is formed separately from the blade c and is secured thereto by screws k which are riveted flush at n with the blade surface. The recesses m are filled in after assembly. The length of the lip is preferably less than one-third the blade length but does not exceed one-half.
Patent GB-589664-A (GB)
Title: Improved shuttering system for concrete and reinforced concrete constructions
IPC: E04G11/14
Filed: 1944-11-17
Abstract: 589,664. Casting concrete walls &c. in situ. McNEIL, R. D. Nov. 17, 1944, No. 22771. [Class 20 (ii)] Shuttering for concreteconstructions comprises timber posts 1, having longitudinal grooves 8 and abutment pieces 4, secured to the frame 10, 11 of a building under construction, flanged sheet metal panels 2 having an outward step 3, a locking bar 7 pivoted at 6 to a stay bar 5 on each panel which bar may pass through slots in the flanges to engage in the grooves in the posts, and distance pieces 14 which pass through slots 15 in the posts and are locked by keys 16 which pass through slots 17 in brackets 18 fixed to the posts and slots 21 in the distance pieces. When the bar 7 is pivoted into engagement with the grooves 8, the step 3 is forced against the abutment piece 4. At the corners corresponding posts with grooves and brackets on adjacent sides are used. These corner posts may be provided with metal shoes to fix them to the members 10, 11. Lateral stiffening of the posts may be provided by transverse binders supported in channel brackets fixed to the posts. The brackets 18 have two sets of slots 17 so that when two distance pieces are used, as at a corner, one may pass above the other. The posts are invertable.
Patent GB-685109-A (GB)
Title: Improvements in or relating to methods of recording electrical signals
Inventor: WEIR DONALD ADAMS
IPC: H04L13/06
Filed: 1948-10-22
Abstract: 685,109. Recording-apparatus. STANDARD TELEPHONES & CABLES, Ltd. Oct. 22, 1948, No. 22819/51. Divided out of 685,032, [Group XL (b)]. Class 106 (iv). [Also in Group XL (b)] In a method for recording signals comprising code signal elements of opposite polarities on a magnetizable tape or wire, the elements are recorded without any spacing therebetween and at such strength as to produce magnetic saturation of the recording medium so that a fresh set of signals can be recorded over or upon existing signals without having recourse to a " wipeout " or erasing operation.
Patent GB-1256457-A (GB)
Title: Diethylaminoethyldextran (deae-d) as adjuvant for vaccines for active immunisation
Inventor: WITTMAN GUENTHER
IPC: A61K39/39
Filed: 1970-05-12
Abstract: 1,256,457. Diethylaminoethyldextran as a vaccine adjuvant. FARBENFABRIKEN BAYER A.G. 12 May, 1970 [13 May, 1969], No. 22880/70. Heading A5B. Vaccine compositions contain an antigen and diethylaminoethyl dextran (DEAE-D) as adjuvant and antigen-containing vaccine compositions for active immunisation are potentiated by admixing DEAE-D with the vaccine. The vaccine may contain 5 to 250mg. per ml. of DEAE-D. The pH of the DEAE-D may be adjusted with a buffer and the DEAE-D and any buffer may be heated for 20-30 minutes at 110 to 120C in an autoclave for sterilisation, and after cooling an antigen solution added thereto, thereby forming a vaccine. In examples, vaccines containing foot and mouth disease virus optionally inactivated with ethylethyleneimine and inactivated virus of infectious bovine Rhinotracheitis are employed. The vaccine compositions may contain other adjuvants such as Al(OH) 3 , saponin and. oil adjuvants.
Patent GB-358629-A (GB)
Title: Improvements in rakes
IPC: A01D76/00
Filed: 1930-07-29
Abstract: 358,629. Rakes. BAMFORD, J., St. Mary's Mount, and BAMFORD, C. J., The Parks, both in Uttoxeter, Staffordshire. July 29, 1930, No. 22887. [Class 6 (iii).] A folding rake comprises a main swinging frame having tines which undergo no lateral movement during the folding operation, and one or two end units having tines which, during the folding operation, move sidewise substantially in a straight line parallel to the axle, remaining parallel to one another, into a position in which the tines of each separate unit are close to one end of the main swinging frame and adjacent to one another. A central stationary portion 3 of the main axle carries a draught frame, stripper frame and end members 5 which support a cross-bar 6 carrying the fixed tines 7 ; end portions 2 of the main axle are slidable within the stationary portion 3 and carry land wheels 1 and arms 8 which together with the end members 5 carry, by means of pin- and-slot connections, the ends of lazytongs members 9 carrying tines 11 mounted on pivots 13 and working in guides 14 thereon. Guide-bars 15 carried by the arms 8 slide through collars on the members 5 and may be fixed in position by screws 17. In a modification, the tines are fixed to the lazytongs members at their exterior pivot points 12. Mechanical means are provided for raising the machine from the ground and for operating the folding portions.
Patent GB-1431655-A (GB)
Title: Method of and means for maintining index cards and the like  in a compact state in a box
IPC: B42F17/02
Filed: 1972-05-16
Abstract: 1431655 Filing papers M G SCOTT 15 May 1973 [16 May 1972] 22932/72 Heading B6E In a method of and apparatus for preventing cards 4 piled in a box 3 from moving into an unoccupied part of the box a locking follower in the form of a roller 1 is provided, its end 2 rolling on rails, e.g. the edges 3a of the box, the roller being constrained against moving away from the pile when in contact with the endmost card of the pile. In a first embodiment, the roller has flat faces 5. Thus the roller, which may be of square, octagonal, triangular or fluted crosssection, locks against the pile since in order to rotate the roller away from the pile, the pile would have to be compressed. In a second embodiment, the roller is cylindrical and has a surface with a high coefficient of friction which will not slip relative to the card it engages. In a third embodiment, the cylindrical roller has teeth (6), Fig. 7 (not shown), adapted to engage slots (7) in the rearmost card, the slots preventing reverse roller rotation. The edges of the box slant so that, when free to roll, the roller moves away from the pile. The box edges may also have grooves engageable by teeth on the ends 2 of the roller.
Patent GB-1193924-A (GB)
Title: Improvements in Oxyalkylation Processes
IPC: C07C43/23
Filed: 1968-05-15
Abstract: 1,193,924. Alkoxylation of alcohols. HENKEL & CIE. G.m.b.H. 15 May, 1968 [16 May, 1967], No. 22968/68. Heading C2C. [Also in Division C3] Ether and polyether alcohols are produced by reacting a compound containing a hydroxyl group with an alkylene oxide in the presence of a tertiary oxonium salt as catalyst. In the examples tertiary butanol, n-octanol-2, ntetradecanol-1, a mixture of isomers of see.-ntetradecanol, mixtures of primary C 12-18  and C 12-15  alcohols, hexanediol-1,6, and oleyl alcohol are reacted with ethylene oxide, n-octanol-2 with propylene oxide, butylene oxide and epichlorohydrin and n-octanol-1 with glycide.
Patent GB-723605-A (GB)
Title: Improvements in or relating to immersion electrodes for heating electrically conducting liquids
Inventor: HAINES ERNEST MARTIN
IPC: H05B3/03
Filed: 1952-09-12
Abstract: 723,605. Furnace electrodes. GENERAL ELECTRIC CO., Ltd. Sept. 8, 1953 [Sept. 12, 1952], No. 23015/52. Addition to 690,693. Class 39 (3). A modification of the electrode claimed in the parent Specification comprises a refractory metal block 1 carrying a plurality of rigid elongated members 3 of refractory metal, arranged in the operating position to extend in a conducting liquid, e.g. in a glass furnace or salt bath, the block 1 being supported by a shank 6, 10, 12 of which at least that part which is exposed to atmosphere during operation is composed of a relatively non-oxidizable material, e.g. as compared with the refractory metal, e.g. heat-resistant steel. The block 1 and members 3, which are bars or rods, are preferably of molybdenum or tungsten, the blook 1 being in the form of a stout bar or rod arranged at right angles to the shank 6, 10, 12 and welded or pinned thereto. The members 3 may be welded to the block 1 at 5, passing right through it, or may extend only part way in and be held in position by pins. In the example shown, the part 6 of the shank is of molybdenum, the parts 10 and 12 of steel, a water cooled steel jacket 14 steel jacket 14 enclosing the part 12. A hollow, water-cooled plate 15, clamped at 16 to the shank, abuts the outside of the furnace wall during operation. Specification 723,606 is referred to.
Patent GB-730378-A (GB)
Title: Improvements in or relating to paper insulation for electric cables
IPC: H01B3/48
Filed: 1951-10-04
Abstract: 730,378. Paper for insulating electric cables; coated paper. PIRELLI-GENERAL CABLE WORKS, Ltd., ASHFORD, B. O., and BURT, W. Aug. 14, 1952 [Oct. 4, 1961], No. 23121/51. Classes 96 and 140. [Also in Group XXXVI] A paper web or strip for insulating electric cables has applied to one or both surfaces an oil-free hydrocarbon or mineral wax, e.g. a paraffin wax melting at 60 ‹ C., applied as a solid, e.g. by drawing the paper over a block of wax. The paper is applied to the cable core and impregnated with an oil or other insulating compound. The wax reduces friction and thus facilitates bending the cable without damaging the insulation.
Patent GB-170693-A (GB)
Title: An improved device for use in forming or moulding buildings in sand
IPC: A63H33/32
Filed: 1920-08-06
Abstract: 170,693. Cohen, N., and Cohen, S. Aug. 6,1920. Moulds for sand.-A device for moulding buildings in sand comprises a flexible plate, Fig. 5, or a number of hinged plates a, a', a<2>, a<3>, Fig. 2, of suitable outline, embossed to correspond with the surface of the building to be reproduced, and provided with openings b, through which the sand may be excavated, and means for detachably connecting the free ends of the plates. Projections may be provided at the upper ends of the plates whereby battlements or other parts of the building may be produced. The fastening means may comprise wires c with their longer limbs engaged in eyes d on the plate a<1> while their shorter limbs are adapted to engage eyes d<1> on the plate a'. The longer limbs of the wires c may be cranked outwards to provide handles. The meeting edges of the single flexible plate may be secured by a tongue e and slot e<1>.
Patent GB-700179-A (GB)
Title: Improvements in or relating to film forming compositions in gel form and methods of producing same
IPC: C09D193/00
Filed: 1950-09-22
Abstract: A film-forming composition comprises mineral spirits, a solubilizing agent, and the reaction product of tall oil and a metallic hydroxide, such as calcium, magnesium, zinc or aluminium hydroxide, which forms a water-insoluble soap.  The solubilizing agent is a substance such as diethylene glycol, triethylene glycol, octylene glycol or polyethylene glycol which increases the solubility of the metallic soap in mineral spirits and reduces the viscosity of the solution, without materially changing the relative proportion of any of the components which comprise the non-volatile content of the solution. The tall oil may be the natural product or a synthetic product made from a mixture of rosin acids and fatty acids such as myristic, palmitic, stearic, arachidic, oleic, erucic, elaeostearic, linoleic, linolenic, dupanodenic, ricinoleic, octadecatrienoic and palmitoleic acids. The tall oil and metal hydroxide, preferably calcium hydroxide, may be reacted by dissolving the tall oil in mineral spirits, heating the solution to 65 DEG  to 70 DEG C. and then adding a slurry or hydrated lime in mineral spirits.  The composition may also contain a pigment such as that known by the name "Titanox," a terpene resin to improve adhesion, and a plasticizer such as bodied or unbodied soya, fish, or linseed oil, dehydrated or straight castor or chinawood oil, polybutene, paraffin oil, or wax.
Patent GB-677847-A (GB)
Title: Improvements in or relating to pit props and like supports
IPC: E21D15/54
Filed: 1949-09-08
Abstract: 677,847. Pit props. LAKE & ELLIOT, Ltd., GILBERT, G., and NEWMAN, J. Sept. 8, 1950 [Sept. 8, 1949], No. 23272/49. Class 20(ii). A pit-prop is secured in a recess 2<SP>1</SP>, Fig. 3, of an hydraulically extendable head which is then inverted, a piston 7 held stationary by engagement of the feet of the operator with a flange 9 and the prop raised by hand so that liquid flows from a reservoir 2 through a hole 25 in a sleeve 24 and a check valve 19 with the cylinder 4 containing the piston 7. The prop is then turned to upright position, placed under the mine roof and finally fixed in position by screwing out the stem 8 carrying the mine roof engaging flange 9. The prop is released by a screw-operated valve 32 which returns the liquid to the reservoir. A valve 26 releases and a valve 28 admits air to the reservoir 2. In a modification the prop is tubular and has a screw-adjustable foot which allows a greater length of adjustment and the upper end of the tubular reservoir has a baffle plate 50 V-shaped in elevation but shown in plan in Fig. 9 having apertures 51, which forms an air lock and prevents overfilling of the reservoir through the filler 39. In a further modification the check valve 19 may be opened by an axially movable stem in the plug 23 operated by a lever movable in a cam slot.
Patent GB-500706-A (GB)
Title: Improved method of manufacturing electric discharge tubes
IPC: H01J19/42
Filed: 1938-08-06
Abstract: 500,706. Discharge apparatus. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. Aug. 6, 1938, No. 23313. Convention date, Aug. 9, 1937. [Class 39 (i)] Grids having turns 5; 3 behind one another as viewed perpendicularly to the cathode so as to reduce current flow to the grid remote from the cathode are positioned by providing each grid. at least at the end nearer the pinch, with an end turn 4 of zero pitch laid against a plate 1 of mica &c.