baber/WOPTO huggingface dataset:
Patent GB-1258983-A (GB)
IPC: F04C15/00
Filed: 1969-09-03
Abstract: 1,258,983. Rotary positive-displacement pumps and compressors. B. N. OSTBERG. Sept. 3, 1969 [Sept. 12, 1968; Nov. 8, 1968], No. 43550/69. Heading F1F. A rotary-casing part 111 of a pump, or compressor, has a surface 115 of uniform diameter and in contact with a non-rotary member 113 carrying a vane with parts 120a, 120b pressed outwardly by an elastomeric tube or rod 36. Sealing of the ends of working chambers 116 is ensured by pressure exerted on a flange 42 and an end wall 111b of the casing by outgoing fluid in a chamber 44, which has ports 52 in the flange, slight axial movement of the casing being permitted by a recess 46 containing the flange perimeter. The flange may be integral with the member 113 or formed (as shown) by a plate fixed to said member. In another embodiment, Figs. 1 and 2 (not shown), the vane has a single part of fixed diametral length, the flange 42 and chamber 44 are dispensed with, and the working chambers are limited axially by the casing end-walls. The casing may be driven directly by a Vee-belt. Sealing of the working chambers both radially and axially may be improved by a resilient liner (60), Figs. 5 and 6 (not shown), which is supported in the casing by a layer (62) of elastomeric material and engaged by the radially -outermost edges of the vane. Depression of the liner by the vane may be limited by strips or bands (64) of relatively-rigid material within the layer (62). Alternatively, the layer is made of asbestos. It is indicated that the casing may be stationery and the member 113 rotatable. The vane may have a fixed diametral length that can be set to suit the diameter of the surface 115 by ratchet-like means. The edges of the vanes in contact with the casing may have plastics-material inlays. The profile of the surface 115 can be determined by formulae derived from geometric diagrams, Figs. A to D (not shown). A surface similar to the surface 115 may be formed on the member 113, the inner surface of the part 111 being rendered circular in profile and a pair of diametrally aligned and opposed vanes being lodged in said part and coupled to each other to act as a single unit.
Patent GB-1264410-A (GB)
IPC: F16H48/20
Filed: 1969-09-11
Abstract: 1,264,410. Differential gear. BORG-WARNER CORP. 11 Sept., 1969 [16 July, 1969], No. 45006/69. Heading F2D. In an automotive vehicle limited-slip bevel differential gear, wherein differential rotation of the usual half-shafts S is resisted by cone friction clutches F between side wheels 27 and the usual input casing C, the cone friction clutches F are engaged by plate-spring packs P, the engaging force of which is decreased by the opposing interaction thrust of the bevel gear teeth reaction in proportion to increasing input torque whereby the clutches F are engaged with a force varying inversely proportional to the input torque, such that each clutch is lightly engaged during normal torque transmission, i.e. when the force of the spring packs P is relieved by the opposing bevel gear thrust, but one or other clutch F becomes fully engaged by its spring pack P whenever the output torque on the associated one or other output shaft S, and hence also the opposing bevel gear thrust that side, vanishes, viz. when one wheel loses traction. As shown, the spring-loaded conical clutch members 35 are splined at 41 to the output shafts S and engage conical surfaces 54 on removable cylindrical inserts 53 (Fig. 3) which are notched and recessed at 70, 72 to locate on the planet cross-pins 31 and form seats for the bevel planets 29. In Fig. 4 (not shown), the side gear-wheels (27a) are splined at (51) on extended bosses of the conical clutch members (35a) which, as previously, are directly splined at (50) to the output shafts S.
Patent GB-1264990-A (GB)
IPC: H01H51/28
Filed: 1969-10-10
Abstract: 1,264,990. Electromagnetic relays. PLESSEY CO. Ltd. 7 Sept., 1970 [10 Oct., 1969], No. 49769/69. Heading H1N. An electromagnetic relay incorporating one or more reed contact units 22 located in a tunnel of an elongated bobbin 20 wound with an operating coil 18 has one or more flux concentrators, each having two complementary elements (10, 11 or 10<SP>1</SP>, 11<SP>1</SP> or 50, 51, or 50<SP>1</SP>, 51<SP>1</SP>), formed of a magnetically-soft material and arranged to partially and intimately overlap each other externally of the bobbin and having portions 15 entered in the tunnel ends 21 in alignment with each other in close relationship with the envelope of the contact unit or units and extending towards the bounds of the contact making region of the reeds of the contact unit. Fig. 2 shows the two elements of a flux concentrator and Fig. 3 shows two such concentrators on a relay. Fig. 5 shows flux concentrators on a multicontact relay with separate inner portions 52, 53. The concentrators may be secured by tape or by interlocking parts.
Patent GB-1288166-A (GB)
IPC: B21D39/06
Filed: 1970-02-24
Abstract: 1288166 Explosive welding; jointing by tube expanding YORKSHIRE IMPERIAL METALS Ltd 19 April 1971 [24 Feb 1970] 8789/70 Addition to 1149387 Headings B3J and B3R A method of securing a bimetallic tube 1 (Fig. 1) in an aperture 4 of a heat exchanger tube plate 5 comprises arranging the end of the tube in the aperture so that the outer tube 2, which may e.g. be of steel, terminates within the aperture to leave an exposed length of the inner tube 3, e.g. of copper, projecting therebeyond at least to the front surface of the tube plate, and welding the outer tube and the exposed length of inner tube to the wall of the aperture by detonation of an explosive charge in an energy transmitting insert located in the end portion of the tube. In a second embodiment (Fig. 4) a bimetallic tube 12 is welded to a bimetallic tube plate 16 the outer tube wall being arranged prior to welding to terminate in the plane of the interface between the metal layers 17, 18 of the tube plate. The layers 17, 18 and the tubes 13, 14 may be of mild steel and copper respectively. Any projecting length of the inner tube is sheared off in the course of welding.
Patent GB-1288969-A (GB)
IPC: B02C15/02
Filed: 1969-12-09
Abstract: 1288969 Roller and ring mills STEIN INDUSTRIE 9 Dec 1969 [9 Dec 1968] 60098/69 Addition to 1242887 Heading B2A A roller-and-ring mill includes a replaceable reduction-gear unit 25. As described, the mill comprises rollers 11 applied to a track 4 and carried by a plate 10. Plate 10 is secured to the output shaft 24 of the unit 25. The unit 25 serves as the sole support for the rotary plate 10. An air duct 34 opens at 35 beneath the plate 10 and close to the shaft 24. Over pressure air passes into an annular passage formed by an annular shoulder 36 on the lower face of the plate 10. Dust is thus prevented from reaching the shaft 24 and penetrating the reduction-gear unit 25. Coarse material is thrown on to the rolling track by blades 18.
Patent GB-1289871-A (GB)
IPC: B23K20/12
Filed: 1970-01-05
Abstract: 1289871 Control of motors CATERPILLAR TRACTOR CO 5 Jan 1970 [15 Jan 1969] 485/70 Heading H2J [Also in Division G1] In an arrangement wherein machine functions are controlled in dependence on the rotary speed of a machine, the speed is measured by a magnetic pick up arrangement and a signal obtained thereby is compared with a number of reference signals to operate a relays to initiate a machine functions. As applied to an inertia welding arrangement a first relay is provided to shut off a driving motor and apply pressure at a speed of say 800 rpm, a second relay is provided to initiate the application of increased pressure at a speed of say 1000 rpm, and a third relay is provided to recommence the cycle when the machine has stopped. As shown in Fig. 2 the sine-wave output of the magnetic pick-up is passed to a squaring amplifier 34 whose output is differentiated and the positive pulses therefrom are passed to a monostable multivibrator 38. The pulses therefrom are integrated at 40 to produce a D.C. voltage whose value is indicative of the machine speed. This is applied to a meter 44 and to a comparative amplifier 60 to which a reference voltage 62 is also applied. At equality of these two signals an output is derived which operates a relay 68 to control the driving motor and the application of welding pressure. The reference voltage is derived from a variable resistance of the 5 decade, 10 position type to give all values from 0 to 99,999 ohms. This resistance is set to a value corresponding the speed of operation at which activation of the relay 68 is required. A similar arrangement is provided to compare the derived signal with a second reference voltage 64 in a comparator 58 so that a relay 70 operates when the machine speed falls to that value predetermined by the setting of reference voltage 64, at which increased pressure is to be applied. A third comparator 56 compares the sensed signal with a reference indicative of zero speed, so that a relay 72 is operated to re-commence the cycle when the machine has stopped. A circuit arrangement which utilizes transistors is disclosed.
Patent GB-1297429-A (GB)
IPC: G01C19/54
Filed: 1970-06-17
Abstract: 1297429 Gyroscopic apparatus SPERRY RAND CORP 17 June 1970 [24 June 1969] 29300/70 Heading G1C A gyro-vertical, directional gyroscope, or stabilized platform reference system for an aircraft comprises independent gyroscopes 10, 11, 12 with their spin axes maintained in a common reference direction by respective erection means responsive to aircraft accelerations tending to cause their spin axes to drift, the erection means of the gyroscopes being simultaneously cut out if said accelerations exceed a predetermined value. In the gyro-vertical system shown, each gyroscope has torquers acting about the roll and pitch axes, only the pitch torquer 20 being shown. A liquid filled pendulous sensor 17 on the gyroscope energizes one or other control field winding of the torquer 20 if the gyro tilts, to restore the latter to vertical unless blocked by a torquer control 18. Each gyroscope carries tilted liquid level type acceleration sensors 19, 19<SP>1</SP>, and only if the sensors of all three gyroscopes signal an acceleration exceeding said predetermined value do the controls 18 block the erection process. Blocking is limited to, say, 3 minutes by a timer circuit 24. Failure of any gyroscope produces a signal equivalent to the blocking signal from its acceleration sensors 19, 19<SP>1</SP>. If either of the sensors 19, 19<SP>1</SP> of a gyroscope is subjected to more than said predetermined acceleration it becomes conductive so that current flows through a diode demodulator 23 to render a transistor 41 conductive to drop the voltage in an inter-connection line 34 to zero. If the interconnection lines 37, 38 have also been dropped to zero voltage by their respective sensors, transistors 43, 42 become non-conductive. (Diodes 45, 46, 47 form the AND gate 30, diodes 39, 49 the OR gate 27, and diodes 46, 47 the NOR gate 26 of Fig.1). When transistor 42 becomes non- conductive, a transistor 44 becomes conductive, and a silicon controlled rectifier (SCR) 40 becomes non-conductive, opening the circuit of torquer 20. Also when the transistor 42 becomes non- conductive a timer circuit 24 comprising a capacitor 5, resistor 51, transistors 53, 54, and a diode 55, is energized until the charge voltage of capacitor 50 reaches the switching value for transistor 53, the transistor 44 being rendered non-conductive to cause SCR40 to become conductive again, and to cause a positive voltage in line 34 and render transistor 42 conductive, resetting the timer. If any of lines 34, 37, 38 gains a positive voltage due to the respective sensors 19 or timers 24, all the transistors 42 are made conductive to remove the erection blocking. If a gyroscope fails, a signal to a solenoid switch 61 earths the respective inter-connection line 34, 37, or 38, and that line's contribution to  the AND gate 30 ceases to be effective.
Patent GB-1301403-A (GB)
IPC: C08G18/00
Filed: 1970-04-17
Abstract: 1301403 Laminates ROHM & HAAS CO 17 April 1970 [30 Jan 1970] 18559/70 Heading B5N. [Also in Divisions B2 C2 C3 and D1] Natural and synthetic materials such as paper, textiles, metal, wood and leather may be adhered together using as an adhesive a composition which cures to form a polymer on contact with water, the composition comprising an oxazolidine or a tetrahydro-oxazine and a polyisocyanate (see Division C3). In examples, cotton broadcloth/cotton broadcloth laminates were prepared by applying the adhesive in dot pattern to one of the pieces of fabric, pressing the second fabric on to the adhesive side of the first fabric, drying and then curing the adhesive at 65% relative humidity.
Patent GB-1304036-A (GB)
IPC: C07F9/11
Filed: 1970-04-22
Abstract: 1304036 Phosphate ester salts WITCO CHEMICAL CORP 22 April 1970 19182/70 Heading C2P A phosphate ester salt in the form of substantially anhydrous, free flowing particles is obtained by reacting from 1À7 to 2À5 molar parts of an alcohol ROH where R is a straight or branched C 8 -C 12  alkyl group with 1 molar part of phosphorus pentoxide, neutralizing the phosphate ester reaction product to form the alkali metal or alkaline earth metal salt thereof and then drying the so-obtained salt. The neutralization is generally effected by use of a stoichiometric amount of an aqueous solution of an alkali metal or alkaline earth metal-containing compound, e.g. one containing Na, K, Mg, Ca, Ba and Li, and especially NaOH or KOH. Drying may be effected by spray drying, roller drying or drum drying. Examples are given for the production of sodium 2-ethyl hexyl phosphate and sodium n-decyl phosphate in the form of dry free-flowing particles. The products are useful as ingredients of dry mix detergent formulations and the 2-ethyl hexyl phosphate is also useful as a component of compositions used in stabilizing an acrylonitrile-butadiene-styrene resin.
Patent GB-1309810-A (GB)
Title: Benzodiazepine derivatives
IPC: C07C237/04
Filed: 1970-10-13
Abstract: 1309810 Benzodiazepine derivatives F HOFFMANN-LA ROCHE & CO AG 13 Oct 1970 [17 Oct 1969 27 Jan 1970] 36579/72 Divided out of 1309809 Heading C2C The invention comprises compounds of formula wherein R 1  is halogen, NO 2  or CF 3 ; R 2  is H, C 1-4  alkyl, C 2-3  hydroxyalkyl or di(C 1-4  alkyl)amino- C 2-3 -alkyl; R 6  is C 1-4  alkyl; R 7  is OH, C 1-4  alkoxy, or C 2-6  hydroxyalkoxy. These compounds are prepared by reacting a corresponding 2,3-dihydro-lH-benzodiazopine with ClCO 2 R 6  and R 7 OH.
Patent GB-1315028-A (GB)
Title: Printed circuit board edge connector for electrically inter connecting two circuit boards and contact therefore
IPC: H01R12/70
Filed: 1970-11-20
Abstract: 1315028 Edge connectors for printed circuit boards AMP Inc 8 Nov 1971 [20 Nov 1970] 55236/70 Heading H2E An edge connector for interconnecting two printed circuit boards, consists of a contact 4 comprising a body portion 8 and two contact portions 6 each on one end of a respective spring arm 7 which extends from and is integral at its other end 9 with the body portion, the two arms extending in opposite directions and each contact being disposed adjacent the said other end of the other respective arm on the side of its respective arm which is remote from the body portion, the arms being flexible to permit movement of the contacts towards and away from body. An insulating block 1 consists of two identical parts assembled together to define a slot 2 between them for receiving the edges of two coplanar circuit boards. Each block has a plurality of recesses 5 each containing a contact 4 formed from a flat blank as shown in Fig. 2 and folded along a line 16. Each recess 5 is formed with a bridge portion 13 comprising a slot 17 and two protuberances 18 for receiving respectively the body 8 and latch beads 12 on arms 11 of the contact. The resilience of the arms 7 enables boards of different thickness to be interconnected.
Patent GB-1323162-A (GB)
Title: Mean-rate indicating apparatus
IPC: H04L12/26
Filed: 1970-03-12
Abstract: 1323162 Mean rate indicating apparatus POST OFFICE 19 April 1971 [12 March 1970] 11961/70 Heading G4A and G4H  An apparatus for indicating the mean rate of occurrence of an error indicating signal includes a store connected to an incrementing circuit adapted to increase the total in the store at a constant rate, a divider circuit adapted to reduce the stored total to a predetermined fraction of its instantaneous value on the occurrence of each error indicating signal, and an output circuit connected to the store and adapted to provide a signal related to the instantaneous stored total. As described the store 1 consists of a circulating shift register connected to incrementing and dividing circuits. The incrementing circuit, Fig. 2 (not shown), includes a bi-stable and a number of NAND gates interconnected with the last stage of the shift register to complement the least significant bit of the stored total in that last stage before recirculating it on the occurrence of a clock pulse from a fixed frequency oscillator which determines the rate at which the contents of the store are to be incremented. The gates are arranged so that if the least significant bit changes from 1-0 then the next more significant bit is also complemented in the same way to simulate a carry, the process being repeated through the whole stored total. The divider also consists of a number of NAND gates responsive to the bits in various stages of the store for forming the reduced total on the occurrence of an error signal. The output of the last stage of the store is fed together with the output of a counter 6 stepped at the same rate as the shift register store 1. The display is arranged to display a value, in the case where the store contents S are reduced to ¥ S for each error signal, of 3 + 1/3 logz S. The display is a good approximation to the fractional error rate for a digital data transmission at D bits/sec. with P = D Î 10<SP>-3</SP> where P=the rate at which the store contents are incremented. The theory is given in the Specification.
Patent GB-1326467-A (GB)
Title: Method and apparatus for clarifying liquids
IPC: B01D24/16
Filed: 1971-07-20
Abstract: 1326467 Upward flow filter beds R A BOZE R W KERRIGAN and O J WAGUESPACK 20 July 1971 34059/71 Heading B1D [Also in Division C1] Water is clarified by adding a flocculating agent, e.g. a polymerised acrylamide, to the water being fed via valved inlet 20 to a lower layer of relatively coarse filter material 11, 12 which is separated from an upper layer of relatively fine filter material 13, 14 by a screen 15 whose apertures do not allow mixing of the layers during filtration or purging. An upper screeen 17 has apertures which will not allow the relatively fine filter material to pass during filtration but which will allow it to pass during the purging step at higher pressure. The water is admitted to the filter layers via tubular nozzles 16 which have three vertically spaced side apertures whose diameters increase downwardly, Fig. 5 (not shown).
Patent GB-1330833-A (GB)
Title: Peristaltic pump
IPC: F04B43/12
Filed: 1969-10-07
Abstract: 1330833 Peristaltic pumps MARSSON INDUSTRIES Ltd 5 Oct 1970 [7 Oct 1969] 49262/69 Heading F1F A peristaltic pump comprising a flexible tube 1 supported on a bed 5 is operated intermittently by an operating member 7 driven by an electric motor. A roller 6 carried by the member 7 to squeeze the tube 1 engages a micro-switch 9 to cut out the motor which is restarted after a predetermined lapse of time by a remote timer which includes a cam-operated switch to rotate the shaft 8 a sufficient amount to disengage the roller 6 from the micro-switch 9. This allows small metered quantities to be ejected at each squeezing of the tube. A non-return valve 4 fitted at the discharge and 3 of the tube control the metered discharge. The pump may be used to pump measured amounts of a chlorine indicator into metered samples of chlorinated water, e.g. from a swimming pool.
Patent GB-1336467-A (GB)
Title: Rotary positive displacement interanl combustion  engine
IPC: F01C1/356
Filed: 1971-10-08
Abstract: 1336467 Rotary positive-displacement engines. HWA TE ROTARY ENGINE CO 8 Oct 1971 46944/71 Heading F1F An I. C. engine has a two-part housing 2, 2 containing a rotor 1 with alternating compression and expansion chambers 7, 8 on each side, the axially innermost walls of these chambers being swept by diametrally-disposed pairs of spring- loaded axially-sliding vanes 49a, 50a in housing portions 40 and having profiles as shown in Fig. 10 (not shown). During a portion of the working cycle each vane is held in a retracted position by a guide 49b or 50b thereon engaging with a corresponding groove 28a or 28b on the rotor, the groove serving as a cam and having a profile as shown in Fig. 4. A port 9 at the leading end of each chamber 7 is fed with fuel-air mixture by way of a hollow end 4a of a shaft 4 for the rotor. Exhaust gases are ejected from the trailing ends of the chambers 8 through ports 10, corresponding channels 16 in the rotor perimeter and channels 52, 57 in the housing. A combustion chamber 43 with a spark plug 44 is provided between each pair of vanes, this chamber being closed during ignition by a rotor part 29 between each pair of chambers 7, 8. The vanes 49a, 50a are held in the retracted positions except when required to sweep the chambers 7, 8 respectively, Figs. 9A to 9F (not shown). Cooling fins 12, 15 and 39 are provided on the rotor and housing as shown, the fins 12, 15 serving as fan blades to effect air flow through holes 41 in the housing, spaces 13 between the fins 12, the channels 16 and the channels 52, 57. The engine may be modified to operate as a Diesel engine and may have the chambers 7, 8 on one side of the rotor only.
Patent GB-1348822-A (GB)
Title: Anti-corrosive coating for tubes
IPC: F16L58/00
Filed: 1972-06-26
Abstract: 1348822 Coating pipes G A FORBES 26 June 1972 [26 June 1971] 30084/71 Heading F2P A method of applying an anti-corrosive coating on the outer surface of a pipe comprises wrapping the pipe with a flat flexible casing containing a pasty anti-corrosive material and causing the pasty material to penetrate the casing and contact the pipe. The casing may be made from polyethylene, fabric or absorbent paper and may be permeable to the anticorrosive material or capable of being disintegrated at an elevated temperature. The anticorrosive material may be a high temperature grease and the casing containing the anticorrosive material may be wrapped longitudinally or helically around the pipe.
Patent GB-1349507-A (GB)
Title: Recovery of mercury from metallic sulphides by selective oxidation
IPC: C22B43/00
Filed: 1970-04-01
Abstract: 1349507 Recovering mercury from minerals by distillation GORTDRUM MINES (IRELAND) Ltd 19 April 1971 [1 April 1970] 48297/69 Heading C7D Hg is recovered from minerals containing As and/ or Sb by distillation at a maximum of 600‹ C in an atmosphere containing a maximum of 5% volume oxygen. The preferred temperature is 450-500‹C in an oxygen content of 0À1- 0À5%. After distillation of the Hg the temperature is raised to at least 800‹ C with the maximum oxygen content of 5% and As and/or Sb are recovered as oxides. Alternatively carbon may be added or a reducing atmosphere used to recover the As and/or Sb as sulphides. The process is applicable to ones such as cinnabar and Cu containing sulphide ones e.g. tennantite - tetrahedrite.