baber/WOPTO huggingface dataset:
Patent GB-105746-A (GB)
Abstract: 105,746. Parke, Davis, & Co., (Assignees of Thorp, L., and Wildman, E. A.). April 17, 1916, [Convention date]. Alkamine esters. - The p-toluic esters of gamma-dialkylaminopropyl alcohols are obtained by the reaction of alkamines with p-toluyl chloride.. An example is given of the preparation of the p-toluic ester of gamma-diethylaminopropyl alcohol. The esters and their salts are local anaesthetics. Specification 105,744 is referred to. The Specification as open to inspection under Sect. 91 (3) (a) refers also to p-toluic esters of alkamines in general. This subject-matter does not appear in the Specification as accepted. gamma-Dialkylaminopropyl alcohols.-The preparation of gamma-dipropylaminopropyl alcohol from dipropylamine and trimethylene chlorhydrin, and of gamma-dimethylaminopropyl alcohol from dimethylamine and trimethylene chlorhydrin is described.
Patent GB-143201-A (GB)
Title: Means for raising and lowering goods particularly in shops or showrooms
IPC: A47F5/00
Filed: 1920-04-15
Abstract: 143,201. Drysdale, F. J. May 15, 1919, [Convention date]. Operating and controlling doors by weights and by lever mechanism and cord arrangements.- Relates to means for displaying goods stored at a height in shops &c., by lowering for inspection and subsequently raising. One or more supporting-bars 7 for the goods are provided in a casing C fitted with a door D. The bar 7 is mounted on a lever 4 pivoted to a vertical arm 3 and to a link 5 which is hinged to a fixed lug 6. The arm 3 is mounted on a shaft 1 which also carries a crank 8 to which is pivoted a link 9 hinged to the door D. The door is raised and the bar 7 lowered by a cord 24 which passes over a pulley 13 on an arm 11 fixed to the door and supported by a brace 12, and the reverse process is effected by the same cord passing over a fixed pulley 29 and a pulley 30 mounted on an arm 31 fixed to the shaft 1. The cord 24 emerges out of the casing C after passing over pulleys 16, 17 on a tilting bracket 18 which serves to release a toothed quadrant 23 on the shaft 1 by raising a pivoted pawl 22 each time either side of the cord 24 is pulled. A flap 35 may be integral with the door D or may be separately hinged and be opened by a slotted link 39 engaged by a pin 41 on the arm 3. Instead of the cords 24, arms 11 and 31, brace 12, pawl 22, and bracket 18, a worm, rotated either by a cord or by a handle, may engage the quadrant 23 for raising and lowering the goods.
Patent GB-417608-A (GB)
Title: Improvements relating to automatic volume control for radio-receiving apparatus
IPC: H03G3/26
Filed: 1933-04-08
Abstract: 417,608. Valve circuits for wireless reception. THOMPSON, L. E., and WESTINGHOUSE BRAKE & SAXBY SIGNAL CO., Ltd., 82, York Road, King's Cross, London. April 8, 1933, No. 10585. [Class 40 (v).] In a system for producing quiet, delayed automatic volume control, the control potential is derived from two oppositely acting rectifier systems each including a resistance traversed by a current which is the resultant of two opposed potentials one of which is proportional to the amplitude of the received carrier wave, the other being fixed. As shown the transformer T feeds carrier current to a winding 2 connected to a dry surface contact rectifier D1 with a load resistance R1 which inter alia feeds rectified potentials over a lead 5 to the low frequency amplifier. The resistance R1 is also included in a circuit containing a rectifier V1 resistance R2 and part of a potentiometer 12 connected between the earth line 13 and the negative side of the high tension source, the potentials developed across the resistance R2 being applied between the grid 8 and cathode 10 of the valve 9 to be controlled. In the absence of signals a small current flowing in the reversed current direction through rectifier V1 and resistance R2, biasses the grid positively. Signals rectified at D1 produce an opposing current in R 1, and as the signal strength increases the resultant current reverses in direction and flows in the normal conducting direction through the rectifier V1, the grid 8 becoming rapidly more negative. This effect is illustrated in the curve M of Fig. 2 in which ordinates represent grid potential and abscisse signal strength. The similar circuit fed by the secondary 3 and comprising rectifiers V2, V3 load resistance R3 and filter C1, R4, produces opposing potentials in the resistance R1 of the form shown in curve N, Fig. 2, by virtue of the reversed connection of the main rectifier V2 and the fixed potential from potentiometer 12 being of opposite polarity. The resultant change of potential on the controlled grid 8 with increasing signal is shown by the dotted curve S and results in quiet delayed automatic volume control. A similar circuit (Fig. 3, not shown) is described for use with battery-operated receivers. The potentials due to the two rectifier systems may be impressed on separate grids of the same or different valves.
Patent GB-610286-A (GB)
Title: Improvements in cable termination devices
IPC: H01R11/12
Filed: 1946-04-05
Abstract: 610,286. Cable terminals. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., STEVENS, J. W. SANGER-, and WASSELL, H. J. H. April 5, 1946, No. 10592. [Class 38 (i)] A terminal, particularly for high-voltage or high-frequency cables, consists of a strip or pressing having flaps which are folded in succession to grip the cable core in a tortuous formation. The cable core 5, Fig. 1b, is threaded through a hole in a strip of conducting material and is gripped by folding down flaps 3, 4, in succession. In a modification, Fig. 2a ... c (not shown), one flap is notched to locate the core, and the second flap has additional down-turned side extensions. In a further embodiment, Fig. 3a, the core passes through a collar 10 in a concave disc 9 and is gripped by a notched flap 11 and domed top flap 12. In a still further embodiment, Fig. 4a, the core passes through collar 10 into a domed flap 14 where it is gripped by a flap 15, flap 14 is then bent down on to the disc 9<1>. In a still further embodiment, Fig. 5a, the core is gripped by flaps 11, 12, and a domed cap 16 forms a top cover. In a modification, Fig. 6a, the core 5 is inserted between the legs of a U-shaped strip 17, the longer top leg is bent down to grip the core, and the whole is rolled up and pressed down tightly. A helical spring, Figs. 7a ... d (not shown), may be fitted over the cable core between the top of the insulation and the underside of any terminal; or a spring, Figs. 8a, 8b (not shown), may be secured to the top of a terminal. According to the Provisional Specifications one or more of the flaps may be formed with tongues adapted to be bent over as a last operation to lock the terminal in its folded position..
Patent GB-668989-A (GB)
Title: Improvements relating to frame suspension arrangements for vehicles
IPC: B60G11/27
Filed: 1950-05-01
Abstract: 668,989. Vehicle spring suspensions. SMITH, E. E., and MANNING, F. May 1, 1950 [May 6, 1949], No. 10648/50. Class 108(ii) In a vehicle spring suspension a pair of wheels 7. 7 is adapted to be supported by respective pivoted axle arms 4, 4a extending transversely of the vehicle and adapted to be resiliently influenced by a single air cushion or inflatable element 3 which is operatively connected to each arm. As shown, the inflatable element 3 is disposed in a trough-like transverse frame member 2 and each arm 4 or 4a is connected through a link or dropper 9 or 9a and a bottom plate 8 or 8a with that half of the element 3 which is adjacent the pivotal connection of the arm. The arms are arranged in side-by-side relationship and may be of such configuration that the portions carrying the links 9, 9a are substantially in alignment. Vertical guideways may be provided to permit radial movement of the arms in a substantially vertical plane. A piston and cylinder stabilizer device is operatively connected between the outer end of each arm and the frame member and communicates with the respective end of the element 3 through a flexible conduit 13 and coupling 13a. The couplings 13a may be secured to the frame member to retain the element 3 in position. The invention is applicable to front steerable or rear driving wheels. Specification 489,803 is referred to.
Patent GB-508611-A (GB)
Title: Self-inflating life preservers
IPC: B63C9/15
Filed: 1938-04-07
Abstract: 508,611. Life preservers. CHRISTOPHER, E. T., and LIFEGARD CO., Inc. April 7, 1938, No. 10698. [Class 77] In an inflatable life preserver a liquefied gas container 14 having a breakable tip 16 is fixedly held in a rubber socket 17 cemented to the envelope 10 and having an outlet 20, and serving both to retain the tip after breakage and as an expansion chamber protecting the envelope walls from freezing.
Patent GB-924578-A (GB)
Title: Process and apparatus for the coating of webs or strips
IPC: B05D1/00
Filed: 1961-03-23
Abstract: <PICT:0924578/IV(a)/1> A process for coating webs or strips B of heatresistant material on one side only, comprises guiding two webs or strips of equal width, disposed back to back, through a heating apparatus 1 and a sintering apparatus 2 which has a fluidized bed of powdered, thermoplastic coating material.  The webs, which may be of metal or a textile fabric or a fleece, e.g. of glass or asbestos fibres, are fed by rollers 5 horizontally or vertically through the apparatus 2, sealing chambers, as 4, employing air or gas streams, being provided.  The webs, if of metal, may be pretreated by phosphating, pickling or chromating to promote adhesion, and are heated to 120 DEG  to 450 DEG C. in the apparatus, which may have infra red heaters.  Rolls 51, rotating faster than the rolls 5, draw the coated webs under tension out of the apparatus 2, and lead them, if desired, to heating apparatus 3.  Some or all of the rolls employed within and without the apparatus 1, 2, 3 may be heated or cooled.
Patent GB-800937-A (GB)
Title: Improvements relating to the preservation or protection of commodities
IPC: B65B25/06
Filed: 1955-04-14
Abstract: 800,937. Smoking bacon &c. LINNELL, T. E., LINNELL, P. R., LINNELL, R. E., and LINNELL, T. R. April 12, 1956 [April 14, 1955; Sept. 22, 1955], Nos. 10731/55 and 27049/55. Class 49. The surface of an edible commodity 14, e.g. bacon, is protected from deterioration, e.g. during smoking, by a plate 10 pulled into intimate contact therewith by coil-springs 13, which bear on the external surface of the plate, and integral hook members 12 which are passed through holes 11 in the plate and anchored in the commodity. A protective film 16, e.g. of paper, is interposed between plate and commodity. The plate can be of metal, glass, porcelain or similar ceramic, or plastic, and flanges 15, which may be separated as shown, or continuous, can be made to penetrate the commodity to provide a better seal. According to the first Provisional Specification the plate can be held in position by coil springs anchored to flanges or marginal lugs of the plate and strained by hooks inserted in the bacon.
Patent GB-640830-A (GB)
Title: Process for polymerizing olefinic hydrocarbons
IPC: C07C2/18
Filed: 1948-04-19
Abstract: Olefins of a hydrocarbon fraction containing more than 35 mole per cent of olefins are polymerized by passage through a series of solid catalyst beds of increasing thickness, the hydrocarbons being cooled between successive beds by mixing with a portion of the hydrocarbons discharged from the last bed, and effluent from the said bed being fractionated to separate polymers.  Suitable catalysts are the so-called "solid phosphoric acid," copper pyrophosphate, activated clay, and composites of silica with alumina, alumina and zirconia, thoria or magnesia.  Cracking gases containing 50-60 mole. per cent of olefins above ethylene, such as a C3-C4 fraction, are compressed and heated, and fed to a series of reactors containing solid catalyst beds of increasing thickness and maintained at 205-260 DEG  C. and 6.8-136 atmos.  Part of the mixture of polymers and unconverted charge from the last reactor, after cooling by heat exchange with the feed, is fed back to the effluent lines from preceding reactors in such amounts as to maintain the temperature constant.  When using solid phosphoric acid catalysts, steam or water vapour is added to the feed to each reactor.  A modified form of apparatus comprises a single reactor having screens or the like supporting a plurality of beds or sections of catalyst of increasing thickness.  Effluent from the reactor is recycled in part to mix with the effluent from each preceding bed.  In an example, a charge containing 30 mole. per cent propylene and 25 butylenes is preheated to 205 DEG  C. and passed through four reactors in series containing pellets of solid phosphoric acid.  The temperature in the first reactor increases from 205 DEG  C. at the inlet to 243 DEG  C. at the outlet where the effluent is mixed with cooled recycle stock to lower it to 205 DEG C. In the second reactor it increases to 246 DEG  C., and in the third to 249 DEG  C., cooled effluent being recycled to lower the exit temperature to 205 DEG  C. in each case.  The total recycle is about 0.45 times the volume of fresh feed.
Patent GB-331850-A (GB)
Title: Improvements in or relating to the carbonisation of agglomerates of non-bituminous coals
IPC: C10B53/08
Filed: 1929-04-08
Abstract: 331,850. Mascart, G. M. F. F. April 8, 1929. Coking processes.-Non-bituminous and anthracitic coals containing not more than 14 per cent of volatiles and agglomerated with not more than 7 per cent of pitch are subjected to a progressive carbonization for 9 to 10¢ hours, the temperature rising from about 500‹ C. to 900-930‹ C. An externally heated retort is employed and steam may be injected. Gas freed from its bye-products may be circulated upwardly therethrough to generate hydrogen at the expense of the methane present.
Patent GB-692543-A (GB)
Title: Improvements relating to non-linear electrical circuits
Inventor: WHITE ERIC LAWRENCE CASLING
IPC: H04N5/20
Filed: 1948-04-21
Abstract: 692,543. Electric analogue calculating systems. ELECTRIC & MUSICAL INDUSTRIES, Ltd. April 5, 1949 [April 21, 1948], No. 10954/48. Class 37. [Also in Group XL (c)] In a circuit of adjustable non-linearity for " gamma " correction in television equipment, following a variable fractional power law, the video signal is fed to an impedance network comprising a linear and a non-linear impedance and means are provided for adjustably weighting the output in favour of one or the other response to obtain the desired law. The output of a cathode follower circuit 1, 6 following the head amplifier of a television camera is fed to the input of the succeeding valve 11 through a circuit comprising a resistor 9, an adjustable portion of which is shunted to earth through a diode or a tetrode valve 20 acting as a non- linear resistor. The output from the circuit is applied to the following circuit 19 through resistor 15 and capacitor 17 which also applies negative feed-back to the grid of valve 11 to reduce the input impedance. Resistance 7 is adjusted conjointly with the tapping on resistor 9 to maintain a constance peak-to-peak output amplitude. The output valve may be dispensed with in which case the output is derived from the junction of resistors 8 and 9 and the other end of resistor 9 is earthed. In an alternative arrangement similar to that described in Specification 536,089, Fig. 2 (not shown), the non-linear resistor is connected across an adjustable portion of the load resistor of a high impedance valve and the output is derived from a potentiometer connected across the whole of the anode load adjusted conjointly with the adjustment of the load resistor tap.
Patent GB-1247819-A (GB)
Title: Field effect semiconductor device
IPC: H03K19/094
Filed: 1970-03-09
Abstract: 1,247,819. Semi-conductor devices. NATIONAL CASH REGISTER CO. 9 March, 1970 [4 April, 1969], No. 11069/70. Heading H1K. The or each gate electrode 9, 10 of an IGFET is pointed, with the point being directed towards the channel region between the source and drain electrodes 6, 7, which are also pointed. The thin film device shown comprises anodized Ta gat electrodes 9, 10 and Au-plated vacuum deposited Ta source and drain electrodes on a glass substrate 5, a layer 12 of CdSe being evaporated over the electrodes, and the oxide 13 on the anodized gate electrodes 9, 10 providing the gate insulation. In a modification Au-plated vacuum deposited source and drain electrodes (32, 34) Fig. 2 (not shown) are formed on a glass substrate (31) and are covered by a vacuum deposited CdSe layer (36) and an evaporated SiO layer (37). Al gate electrodes (38, 40) are vacuum deposited on to the SiO layer (37), which provides the gate insulation. Only a single gate electrode may be provided, and the invention is also applicable to MOS transistors having source and drain regions of opposite conductivity type to the rest of the semiconductor material.
Patent GB-505799-A (GB)
Title: Improvements in and relating to coating of articles by cathode disintegration
IPC: C23C14/35
Filed: 1938-04-11
Abstract: 505,799. Coating articles by electric discharge. BERGHAUS, B. April 11, 1938, Nos. 11083 and 11084. Convention dates, May 25, 1937 and Feb. 25, 1938. [Class 39 (i)] In coating articles by cathode disintegration the cathode potential is continuously or intermittently applied to the articles before or during disintegration. In the apparatus shown in Fig. 1, the cathode holder 6 is surrounded by a screen 7 and the article holder 8 by a screen 9. All of these parts are insulated from the base 4 and upper part 5 of the disintegration chamber. The negative terminal of a direct current source 12 may be connected by a switch 13 to the cathode or by a switch 14 through a variable resistance 15 to the holder 8. Thepositive terminal may be connected by switches 10, 17, 19 to the screen 9 and/or the parts 4, 5. During a preliminary treatment the switch 14 is closed and the switch 13 open, one of the switches 10, 17, 19 also being closed. The article 3 is thereby freed from gas ; cathode disintegration may also take place from the article whereby it is roughened and cleaned. Subsequently the switch 13 is closed for the coating operation; the switch 14 is normally open during this operation but may be left closed if heating of the article during coating is desired. The cathode 2 may lie in a magnetic field parallel with the axis of the chamber. The apparatus shown in Fig. 2, is actuated by alternating current from a transformer 22. For preliminary cathodic treatment of the article 3, one pole is connected by a switch 23 to the holder 8 through a rectifier 25 shunted by a variable resistance 24 the other end being connected by a switch 21 to the screen and/or the parts 4, 5 through a rectifier 20. For the coating operation the switch 23 is changed over to make contact with a conductor 26 and the switch 21 to make contact with the cathode holder 6. In a modification, separate D.C. or A.C. current sources are provided for the coating operation and the cathodic connection of the article. The. current density at the surface of the article should be smaller than that at the cathode. The cathode material may be disintegrated in an incandescent state or from a crucible in a liquid state. The distance between the article and the cathode should be such that the glow fringe can form .unhindered.
Patent GB-183535-A (GB)
Title: Improvements in the treatment of china clay or like clays
IPC: B28C1/08
Filed: 1921-04-16
Abstract: 183,535. Rigby, T. April 16, 1921. Pottery materials.-Pastes of China or like clay, such as are dug from the ordinary settling- pits, are dried by being spread as films uponheated surfaces in apparatus such as that described in Specification 149,055, [Class 34 (ii), Drying systems &c.], in which the surfaces are heated by the vapours evolved from the film, after compression, or in the multiple-effect apparatus described in Specifications 180,963 and 181,035, [both in Class 32, Distilling &c.]. The paste may be removed from the settling-pits 2, Fig. 1, by a mechanical excavator comprising bucket chains 16, 18 on a carriage 10 which moves along rails 8 along the sides of the tank. The bucket chains discharge the paste to a hopper 20 from which the pump 22 forces it through an extensible pipe 26, pipes 30, 36 to a vessel 38 from which it is discharged by pipes 42, 44 to a nine-effect drying apparatus of the kind described in Specification 181,035, [Class 32, Distilling &c.]. The settling pits may be dispensed with in which case the thin suspension of clay from the grading pits is led to a battery of continuously acting rotary-drum suction filters of the kind described in Specification 169,870, [Class 46, Filtering &c.]. As the drying-apparatus may be operated by exhaust steam, high-pressure steam, when not required in connection with the plant may be used to pump water into the old clay workings, and the water may be used sub. sequently to drive a water turbine.
Patent GB-1510453-A (GB)
Title: Catheter support
IPC: A61M25/02
Filed: 1977-03-16
Abstract: 1510453 Adhesive support for a catheter KENDALL CO 16 March 1977 [1 April 1976] 11173/77 Heading A5R An adhesive support disc which prevents kinking of a catheter during use whilst the patient reclines upon the disc comprises a soft compressible foam layer 22 e.g. of polyurethane, an adhesive layer 38, a release backing layer 40 and a slot 30 which extends throughout the thickness of the disc to a central aperture 32. During use the catheter P extends from the patient part way through the aperture 32 and then radially outwardly through the slot 30, the thickness of the disc preventing the weight of the patient from blocking or kinking the catheter. The radially inner region of the slot is narrower than the catheter diameter.
Patent GB-707036-A (GB)
Title: Improvements relating to toothed rollers and the tools for producing same
IPC: D01H5/74
Filed: 1952-05-02
Abstract: 707,036. Rollers for spinning machines. SPINNBAU GES. May 2, 1952 [May 5, 1951], No. 11220/52. Class 120(2) [Also in Group XXII] A roller for use in a spinning frame for wool is provided with teeth 1, 3...21, 23 of progressively graduated dimensions, the dimensions of each intermediate spacing 2, 4...22 corresponding to the dimensions of the preceding tooth.
Patent GB-1467129-A (GB)
Title: Artists colouring materials
IPC: C09D5/06
Filed: 1975-03-18
Abstract: The paint block (1) is attached by an adhesive layer (13) with its underside (4) in a cup-shaped receptacle (2) adapted to its shape. The upper side (5) forms the wearing surface of the paint block (1) which is at least partially of conical, hemispherical or pyramidal construction. In this case, its base forms the upper side (5) of the paint block (1). The outer surface sloping downwards the mid-axis (3) forms, as underside (4), the attachment surface of the paint block (1) in the receptacle (2). By virtue of this design, the mass of the paint block (1) is used up evenly and completely during painting. The paint mass maintains its even consistency such that no softening occurs in the central region of the paint block (1). Additionally, the paint block (1) is used up just as quickly in the central region as in the edge region down to the underside (4) such that the adhesive layer (13) in the region of the underside (4) is not prematurely dissolved. <IMAGE>