baber/WOPTO huggingface dataset:
Patent GB-591884-A (GB)
Title: Pulse communication systems
IPC: H04K1/02
Filed: 1945-04-13
Abstract: 591,884. Multiplex pulse signalling. STANDARD TELEPHONES & CABLES, Ltd. April 13, 1945, No. 9320. Convention date, April 20, 1944. [Class 40 (v)] Two pulse trains of the same periodicity are modulated by the same signal source, but in phase opposition, and interlaced to form a single pulse train, the latter being modulated by a second signal source for masking the first signals or to convey further intelligence. In one embodiment, the transmitter comprises a sine wave generator 4, Fig. 1, of half the radiated pulse recurrence frequency, feeding a wave shaper 8, producing square waves 10, followed by a differen. tiator 16, producing pulses 20. The positive pulses are modulated in amplitude in tetrode V1 to the screen grid of which is applied the modulating signal from one end of the secondary of transformer 28, producing pulses 30. The wave shaper 8 also feeds an inverter 12 producing a square wave 14 of opposite polarity to wave 10 which is differentiated at 18 producing pulses 22. The positive pulses are amplitude modulated in tetrode V2 by the modulating signal from the other end of the secondary of transformer 28 to produce pulses 32. Pulses 30 and 32 are mixed to produce pulse train 36 which is converted into a train of radio frequency pulses, in translator 38. Curves a and b, Fig. 2, represent the unmodulated pulses from V1 and V2 respectively. In curve c, 45 is the modulating wave applied to V1, and 47 is that applied to V2, the resultant pulse outputs being shown at d and e and their combination at f. A masking wave, curve g or a second signal may modulate all the pulse amplitudes by superposing it on the common H.T. supply voltage of valves V1, V2 from the generator 43, Fig. 1. The resulting doubly modulated pulse output is shown in curve h, Fig. 2. At the receiver, Fig. 3, valves 70, 72 are gated to pass the odd and even pulses respectively by voltages from the anodes of valves 60, 64 of a multivibrator 62 which is synchronized to half the pulse recurrence frequency by the output of a tuned circuit 56 energized by a valve to the grid of which are applied the incoming pulses. The modulation envelopes of the pulse outputs of valves 70, 72 are obtained in the outputs of filters 82, 84 respectively and after one has been phase reversed in circuit 76, they are combined in circuit 78, to add the two versions of the first signal and cancel out the masking or second signal. Alternatively the first signal may be cancelled out and the second produced in the output by shifting switch 85 to contact 87 to byepass the inverter stage 76. An embodiment of the invention using push-pull time modulation of pairs of the pulses is also described, Figs. 4, 5, 6 (not shown). The two modulators are of the cusper type and each demodulator is arranged to generate a demodulating wave of harmonic frequency by frequency division of the output of a tuned circuit, shock-excited by the incoming pulses and then multiplication to produce an odd harmonic.
Patent GB-1425431-A (GB)
Title: Processing heads for use in emulsifying and/or dispersing apparatus
IPC: C09K23/00
Filed: 1974-03-01
Abstract: 1425431 Emulsifying and dispersing apparatus INTERNATIONALE LABORATORIUMS-PAPPARATE GmbH 1 March 1974 [1 March 1973] 9484/74 Heading B1C An emulsifying and/or dispersing apparatus comprises two relatively rotatable coaxial hollow cylindrical members e.g. a rotor 3 arranged within a stator 4, the members having sets of slots 8, 6 through which the materials to be emulsified/dispersed flow successively, the slots in one member extending in the axial direction while the slots in the other member are arranged at an angle to the slots in the said one member. The central chamber 9 forms a suction chamber to which materials are supplied. The apparatus may be used in continuous throughflow applications or with discontinuous penetration into the medium to be treated. The cylindrical members cooperate at speeds corresponding to ultrasonic frequencies.
Patent GB-396662-A (GB)
Title: Manufacture of 1-methylamino-4-aminoanthraquinone
IPC: C09B1/28
Filed: 1933-03-29
Abstract: 1 - Methylamino - 4 - amino - anthraquinone is obtained by treating 1-methoxy-4-aminoanthraquinone with alcoholic methylamine when the methoxy group is exchanged without substantial disturbance of the amino group.  According to an example the reaction is performed with periodic testing of samples until the product is obtained.  It dyes acetate artificial silk blue-violet shades.
Patent GB-1498764-A (GB)
Title: Preparation of prostaglandin intermediates
IPC: C07C405/00
Filed: 1976-03-10
Abstract: Bicyclic  alpha -hydroxylactones of the formula <IMAGE> in which the substituents are defined in Claim 1, are prepared by a stereoselective process. In this process, the lateral oxo group of corresponding lactones is reduced using a potassium trialkylborohydride. The resulting compounds can be used as intermediates in the preparation of prostaglandins.
Patent GB-1417062-A (GB)
Title: Conveyor chain
IPC: F16G13/00
Filed: 1973-02-27
Abstract: 1417062 Endless conveyers PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 27 Feb 1973 [2 March 1972] 9511/73 Heading B8A [Also in Division F2] A chain for transporting paper tapes comprises a plurality of U-shaped synthetic resin links 1 provided with projections 3 which accommodate transport pins 4, the links being interconnected by spacers each consisting of thickened end portions 9, 9a and a central portion 10, and on assembly the end portions 9, 9a are adapted to be received in openings 7, 7a in a flange 6 of the link 1 with clearance, whilst the central portion 10 is adapted to pass through a slit 8 in the end of flange 6. The slit 8 is wedgeshaped and has a minimum width b slightly less than that of the central portion 10 of the spacer in order to provide a locking action. The end portion 9, 9a are journalled in the openings 7, 7a and in blind holes 5 in the opposite flange 2. Alternatively the spacer may consist of two balls connected by a central portion.
Patent GB-104617-A (GB)
Title: Improvements in Shields for the Protection of Soldiers and others.
Inventor: ROBERTS THOMAS
IPC: F41H5/08
Filed: 1916-07-06
Abstract: 104,617. Roberts, T. July 6, 1916. Body amour, consisting of plates a hinged together along the line A B and further subdivided, if desired, along the hinging lines C D, is fastened round the body by straps b or hooks, but can be converted into an infantry shield by placing a rifle through a central aperture c between the plates. The subdivided armour can be folded for packing; but the central plates are held rigidly, when the device is on the wearer, by means of a plate d which slides in fixed guides e on both plates and covers the rifle aperture.
Patent GB-125414-A (GB)
Title: Improvements in Control Valves especially Suitable for Controlling the Supply and Exhaust of Fluid to and from Hydraulic and other Engines.
Inventor: MANSELL JOHN HERBERT
IPC: F15B13/04
Filed: 1916-07-06
Abstract: 125,414. Mansell, J. H., and Sotham, J. C. July 6, 1916. Valves fitted with independently-actuated supplementary valres.-A valve device particularly for use with hydraulic and other engines comprises an ordinary three-ported slide valve combined with an auxiliary valve actuated by the admission of pressure to one port to open the other pressure port to exhaust. The slide valve A controls the supply of pressure to ports D, E and the exhaust from the ports D, E to the port F. The auxiliary valve comprises a double-acting lift valve K, arranged in a side chamber G having ports D<1>, F<1>, E<1> leading to the ports D, F, E.
Patent GB-915962-A (GB)
Title: Method of hardening proteins
IPC: G03C1/30
Filed: 1959-03-19
Abstract: In a method of hardening protein and especially photographic glue or gelatine layers (see Group XX) there is used as a hardener a compound of the formula <FORM:0915962/IV (b)/1> in which R1 and R11 each represent a vinyl group or a vinyl-sulphonyl-anilido group of the formula -NHC6H4-n(-CH3)n-SO2-CH= CH2, in which n is zero or a whole number from 1 to 4, and R1, R3 and R4 represent a hydrogen atom or a methyl- or ethyl-group and R2 represents a hydrogen atom or a methyl group or ethyl group or a vinyl sulphonyl group. Aryl-vinyl-sulphones are produced by esterifying aryl-b -hydroxyethyl-sulphones with sulphuric acid and treating the esters with alkali or by treating aryl-b -halogen-ethyl sulphones with dilute alkali.  The aromatic disulphonic acid di-(vinyl-sulphonyl)-anilides are prepared by reacting the corresponding sulphochloride with the sulphuric acid ester of the appropriate amino-aryl-b -hydroxyethyl sulphone in aqueous suspension in the presence of calcium carbonate and treating the product with alkali.
Patent GB-1202751-A (GB)
Title: Hydrokinetic dynamometer control systems
IPC: H02P29/00
Filed: 1968-02-28
Abstract: 1,202,751. Automatic speed, torque or acceleration control. HEENAN & FROUDE Ltd, W. N. BATHURST, B.P. HOGAN, D.B. LEWIS, R.A. REDMAN, N. MACLEAN, T.N. WILLIAMS, R. RICHARDSON and C.G. ESCRITT. Dec.17, 1968 [Feb.28, 1968], No.9661/68. Heading G3R. An operating parameter (speed, torque or acceleration) of an hydrokinetic dynamometer 1 employed to test an engine is detected at 10, compared with a derived value reference 12, which may be a programme, and a difference signal used to control the position of a butterfly valve 3 at the outlet of the dynamometer to maintain the parameter at the desired value. The position of the valve 3 is controlled through a linearizing linkage 9 by a positional servo system 15 employing a servomotor 6, a positional feedback 17 and an acceleration feedback 20. Zener diodes may be switched across the feedback line 11 to modify the control characteristic; the comparison amplifier 13 has variable gain for the same purpose.
Patent GB-142090-A (GB)
Title: Improved process of and apparatus for electrical welding
IPC: B23K9/073
Filed: 1920-04-06
Abstract: 142,090. Wilson Welder & Metals Co., (Assignees of Churchward, A.). April 22, 1919, [Convention date]. Heating by electricity. - Apparatus for are or other welding comprises a resistance in series with the weld, controlled by a circuit in shunt with the weld; by this means the current may be automatically increased as the arc is lengthened. As shown, a pile resistance 24, in series with the arc welding electrode 26, is regulated by the differential action of two solenoids 23, 27 acting through a spring-controlled lever 29, one of the solenoids 23 being in series with the arc and resistance 24, and the other 27 in parallel with the arc. When the arc is lengthened by withdrawing the electrode from the rail 6, the shunt solenoid 27 operates the lever 29 to reduce the resistance 24, and thereby increase the current. At starting, when the electrode is in contact with the rail, the solenoid 27 is short-circuited, and the series solenoid 23 causes the resistance 24 to be increased. The Specification as open to inspection under Sect. 91 (3) (a) comprises also apparatus for maintaining a constant pressure consisting of a dynamotor with one field winding, Fig. (Cancelled) in series with the motor armature 11, and with a variable starting resistance 9, and another field winding 13 in long shunt. A high-resistance solenoid 14, in parallel with the motor armature 11, controls the starting resistance 9 and also a pile resistance 19 in series with the dynamo armature 20 and the welding circuit. The last segment 15 of the starter is made long enough to allow considerable movement of the solenoid core without breaking contact between the switcharm 8 and the segment. As the motor speeds up, the pressure across the armature causes the solenoid 14 to cut out the resistance 9. At normal pressure the resistance is maintained at a minimum by means of a spring 18 controlling a lever 17. If the pressure of supply from the main 3 is increased, the solenoid 14 operates the lever 17 through a non-magnetic extension on the solenoid core, so as to increase the resistance 19 and thereby maintain a constant pressure in the welding circuit. The apparatus may be mounted on a railway hand car. This subject-matter does not appear in the Specification as accepted.
Patent GB-1164084-A (GB)
Title: Self-Extinguishing Polyester compositions and method of making the same
Inventor: LARSEN ERIC RUSSEL
IPC: C08F283/01
Filed: 1968-02-28
Abstract: 1,164,084. Bromine-containing polyesters. DOW CHEMICAL CO. 28 Feb., 1968 [3 March, 1967], No. 9691/68. Heading C3P. A composition comprises (A) a brominecontaining polyester of 2,2-bis-(bromomethyl)- 1,3-propanediol and a mixture of at least one aliphatic unsaturated dioarboxylic acid or anhydride and an aromatic or cycloaliphatic dicarboxylic acid or anhydride, (B) a non-halogencontaining unsaturated polyester and (C) a vinyl aromatic monomer or an ester of acrylic or methacrylic acid. The non-halogen-containing polyester may be a polyester of an aliphatic unsaturated dicarboxylic acid or anhydride, or a mixture of such acid or anhydride and an aromatic or cycloaliphatic dicarboxylic acid, and a glycol. The glycol may be propylene glycol, dipropylene glycol, or 2,2-dimethyl-1,3- propanediol or a mixture of a diol and glycerol or pentaerythritol. In the examples were used (A) a polyester of 2,2-bis-(bromomethyl)-1,3- propanediol, maleic anhydride and phthalic anhydride, (B) a polyester of propylene glycol, 2,2-dimethylpropane-1,3-diol, dipropylene glycol, maleic anhydride, phthalic anhydride, isophthalic acid and triphenyl phosphite; hydroquinone, styrene, methyl methacrylate, orthochloro-styrene and benzoyl peroxide. In a comparative example, 2,2-bis-(bromomethyl)- 1,3-propanediol, propylene glycol and maleic and phthalic anhydrides were used and this polyester cured with styrene.
Patent GB-435603-A (GB)
Title: Improvements in or relating to compressed air breach actuating and loading mechanisms for rapid firing small arms
IPC: F41A7/04
Filed: 1935-03-28
Abstract: 435,603. Automatic guns. FAIREY AVIATION CO., Ltd., Cranford Lane, Hayes, Middlesex, and VINES, A., 5, Pembroke Villas, The Green, Richmond, Surrey. March 28, 1935, No. 9707. [Class 92 (ii)] A pneumatic piston and cylinder device a for actuating the cocking handle d of an automatic gun is so arranged that the cocking handle is retained at the end of the outstroke of the piston by a detent which is automatically released just before the piston reaches the end of its return stroke. In the form shown, the cylinder is pivoted at b to the gun and the piston rod e is connected to a pivot m on the gun by spring-controlled links h, j to ensure horizontal movement of the forked end f of the piston rod which engages the cocking handle. During the outstroke of the piston rod, a pin g thereon rocks an arm q on the pivot m, the part s of the arm engaging a pivoted detent t to retain the cocking handle when the piston rod returns. Towards the end of this return movement, an adjustable pin z on the link j rocks a lever y on the pivot m and, through a fork v, releases the detent so that the cocking lever is free to return under the influence of its controlling spring.
Patent GB-797853-A (GB)
Title: Tent with expansible all-purpose front or fly
IPC: E04H15/32
Filed: 1956-03-28
Abstract: 797,853. Tents. BLANCHARD, R. L. April 17, 1956 [March 28, 1956], No. 9715/56. Class 20(1)  The opening of a tent is covered by a fly sheet 13, 18, Fig. 2, the tip 19 of which can be secured to a stake 24 in the ground to close the opening and can be raised as shown dotted to clear the opening. The fly sheet has side gussets 21 one edge of which is attached to the tent body, the gussets opening out when the fly tip is raised. When lowered, the sides of the part 18 lie close along the ground. The fly is secured at the top. along a line 14, Fig. 1, which shows the fly sheet rolled up, and netting 11 to keep out insects. The tent is suspended from the framing 10 which is covered by an outer cover forming an air space and has a top ventilator hood 28 which may be closed by a cover 29 the holes of which are slipped over the projecting ends of tubular frame members 10, the cover providing a double roof. The tent opening may itself be covered by netting 11 located with zip fasteners. For cold weather the tent also has an extra outer cover 26 staked down, and having a grille or net ooenings 27a for top ventilation. U.S.A. Specification 2,543,684 is referred to.
Patent GB-391595-A (GB)
Title: Improvements in or relating to vacuum jacketed receptacles for provisions
IPC: A47J41/00
Filed: 1932-04-05
Abstract: 391,595. Receptacles for cooling provisions. WILHELM, T., 25, Ausstellungsstrasse, Z³rich, Switzerland. April 5, 1932, No. 9786. [Class 29.] A receptacle for cooling provisions comprises a vacuum vessel 24, inner and outer protection boxes 25, 26, and an ice box 23 suspended from the top of the receptacle. The protection box 26 and the vacuum vessel are provided with conical rings 20, 19 respectively, which are pressed against each other by a spring 27 in the outer box. Provisions to be cooled are placed within the box 25 ; further cooling is effected by a cooling coil suspended in the latter vessel. Cold air from the ice box is circulated in the container 25, and by moving the cover 15 up and down air from the box 26 is compressed and passes through apertures 21, 22 in the conical ring 19 and container 25 into the inner vessel. A suction valve 16 and a pressure valve 17 are provided in the cover.
Patent GB-669294-A (GB)
Title: Improvements in and relating to counting apparatus
Inventor: JONES CYRIL EDWARD
IPC: H03K23/74
Filed: 1949-04-11
Abstract: 669,294. Counting-apparatus. CO-OPERATIVE PRESS, Ltd. Feb. 27, 1950 [April 11, 1949], No. 9798/49. Class 106 (i). Counting-apparatus for indicating or record. ing the total impulses arriving over lines X connected, for example, to output counting contacts of a number of machines operating simultaneously, comprises a condenser 10 associated with each of the lines and arranged to be charged by the arrival of an impulse, and sequentially operating means for collecting the charges and transmitting corresponding impulses to a totalizing counter. In the apparatus shown, impulses on the lines X energize corresponding count relays a1-a6, normally open contacts 3, 4 of which then apply positive feed, through resistances 11, to the corresponding condensers 10. The sequentially operating means comprises a chain of relays b1-b12 with changeover contacts 19 or 22 adapted to switch positive feed to the individual relays in sequence. Alternate relays b1, b3, &c. are the collecting relays and have lower change-over contacts 19 for discharging the respective condensers 10 through a first totalizer relay e. The intermediate relays b2, b4, &c. are introduced to separate the actions of the collecting relays. All the relays are shunted by retarding condensers and have series current-limiting resistances. Alternative condensers 48 may be switched across the relay b12 to adjust the time of operation of the chain. In operation, pulses arriving over the lines X energize the appropriate count relays a1-a6. An energized count relay closes contacts 3, 4 to charge its condenser 10 and opens contacts 1, 2 to interrupt positive feed to the relay chain. The charging current of the first condenser to charge passes to negative through a set relay d which energizes a chain control relay c, the latter holding over contacts 33, 34 and cutting out set relay d at contacts 35, 36. Main contacts 13, 14 of the relay c prepare the circuit of a chain start relay f, completed by closure of all the count relay contacts 1, 2, contacts 39, 41 of relay f then applying positive to the relay chain, relay b1 first becoming energized through all the contacts 15, 19 and 20, 22 and the remainder in sequence as the preceding contacts change over. As the collecting relays b1, b3, &c. operate in succession, their lower contacts 19 apply the condensers 10 in turn to the first totalizer relay e which controls a second totalizer relay g to apply a pulse for each charged condenser to the totalizer circuit Y.
Patent GB-473187-A (GB)
Title: Improvements in carbonisation
IPC: C10B7/06
Filed: 1936-04-03
Abstract: 473,187. Coking processes and apparatus. WALLACE, G. W. April 3, 1936, No. 9839. [Class 55 (i)] Coal, especially coal slack, is fed from a hopper B on to a conveyer D on which it is moved in a thin layer of 2À5 to 4À5 inches in thickness in counter-current to hot combustion gases from inlets F, the distillates and heating gases leaving by an outlet I. The coke falls into a bin O provided with a pipe R for cooling gases, and a delivery valve P. The gas admitted at R controls the temperature of the combustion gases used for heating the charge. Part of the heating gases may pass over the layer of coal, and part may be passed below and upwardly through the layer, the conveyer being pervious to the passage of gases. In a modification, the heating gases may be admitted entirely below the conveyer so as to pass upwardly through the charge, a scavenging gas being passed over the charge, if desired, to sweep out the distillates. The heatinggases and distillates from above the charge may be passed through a flue to below the conveyer to the outlet. Excess of combustible gas should be present in the heating gases. Specification 341,606 is referred to.
Patent GB-250950-A (GB)
IPC: E04H12/22
Filed: 1926-04-14
Abstract: 250,950. Schõtz, A. April 15, 1925, [Convention date]. Bases for posts. - The base for a reinforced concrete mast consists of a longitudinal divided member a embracing the mast and provided at its upper and lower ends with holes i in which are placed blocks k of wood or metal clamped against the mast by screws m or wedges abutting on rings l. The lower part of the base comprises a similar divided member b and an intermediate member c. The parts of the members a, b, c are connected by dowels and slots d, e.
Patent GB-1304626-A (GB)
IPC: A61F2/34
Filed: 1970-03-02
Abstract: 1304626 Artificial hip joint H V CHAMBERS 2 March 1970 [13 March 1969] 9896/70 Heading A5R [Also in Division E2] A human joint prosthesis, e.g. a hip joint prosthesis, comprises a socket member 1 and a ball member 3 rotatable in said socket member, said ball member having a shank 10, the inner surface of the socket 1 having a main substantially hemispherical portion terminating in a diametral plane, extensions 6a of said main portion forming retaining means for the ball member, said retaining means defining an opening into the socket having an area smaller than that of the socket at the diametral plane, the said ball member being relieved at a selected area or areas so that one diametral plane of the ball is shaped and dimensioned to pass through said socket opening.. The socket member 1 is shown positioned in the acetabulum of the pelvis 5, the socket being held in place by synthetic plastics cement 7, similarly the femural head prosthesis 2 has its shank 10 cemented in the femur 11. The retaining means for the ball member is an integrally formed annulus 6a, the annulus is shaped to provide a smooth transition from the circular diametral plane of the socket 1 to an oval outer opening. The ball member 3 is generally spherical, but to allow for insertion or removal of the ball member into or from the socket, the spherical surface is relieved so that at one selected diametral plane the cross section is elliptical.