baber/WOPTO huggingface dataset:
Patent GB-1265446-A (GB)
IPC: C07J41/00
Filed: 1970-06-08
Abstract: 1,265,446. 7 - Nitro - estratrienes. SOC. FARMACEUTICI ITALIA. 8 June, 1970 [11 June, 1969], No. 27544/70. Heading C2U.  Novel steroids of the formula wherein R is H, C 1-4  alkyl, omega-halo-C 1-2  alkyl, C 5-6  cycloaliphatic, C 1-4  aliphatic acyl or C 5-8  cycloaliphatic acyl; R<SP>1</SP> is H, C 1-4  aliphatic acyi or C 5-8  cycloaliphatic acyl; R<SP>11</SP> is H ,  ethynyl or 1-butynyl, or OR<SP>1</SP>+R<SP>11</SP> is oxo; and R<SP>1</SP> is H(#-OH), H(#-ONO 2 ) or = O; are prepared by reacting corresponding 6,7 - unsubstituted- 6,7-dehydro-steroids with a nitrating agent such as fuming nitric acid or nitrogen dioxide at from - 20 to +5 C. under anhydrous conditions. The required 7α-nitro-steroids may be isolated from the reaction solution, after neutralization, by extraction with an organic solvent, and separated by chromatography. 3 - Methoxy . 1,3,5(10),6  -  estratetraen - 17# - ol acetate is prepared from the 3-ol and diazomethane; The novel steroids have estrogenic activity, and they may be made up into pharmaceutical compositions with suitable carriers.
Patent GB-1265711-A (GB)
IPC: G03C1/485
Filed: 1969-03-13
Abstract: 1,265,711. Nitrogen-containing interpolymers. EASTMAN KODAK CO. 13 March, 1969 [18 March, 1968], No. 13312/69. Heading C3P. [Also in Division G2] Interpolymers of 1 : 2-dimethyl - 5 - vinylpyridinium methosulphate with N-methacryloyl - N<SP>1</SP> - cyanoacetylhydrazine (70 : 30), N - (2 - methyacryloyloxyethyl)cyanoacetamide (80 : 20), 2-acetoacetoxyethyl methacrylate (90 : 10), 2-[2-methacryloyloxy)ethyl]- isothiouronium methane sulphonate (90 : 10) and 2-aminoethyl methacrylate hydrochloride (80 : 20); interpolymers of acrylamide with 2 - acetoacetoxyethyl methacrylate (90 : 10) and N - cyanoacetyl - N1 - methacryloyl hydrazine (90 : 10); and the interpolymer of 3 - acryloyloxypropane - 1 - sulphonic acid sodium salt with N-methacryloyl - N<SP>1</SP> - glycylhydrazine hydrochloride (90 : 10) are made by polymerization of the respective monomer mixtures with azobis-(isobutyronitrile) or potassium persulphate under nitrogen.
Patent GB-1266502-A (GB)
IPC: B67D7/08
Filed: 1968-06-17
Abstract: 1,266,502. Liquid dispenser setting mechanism. VEEDER-ROOT Ltd. 17 June, 1969 [17 June, 1968], No. 28753/68. Addition to 1,158,021. Heading G4V. [Also in Division A4] The mechanism by which the presetting wheel is set by the preselector of the control system described in parent Specification is modified by arranging for the presetting wheel 200 to be respectively indexed to zero and preset in opposite directions, thereby obviating the necessity for an independent power-driven scanner. The presetting wheel 200 is connected to a wheel 5 via wheel 7, the wheel 5 being freely rotatable on its shaft 3. An abutment 6 on wheel 5 is arranged to scan an input from either the coin operated or manually operated preselector. During delivery of liquid pawl 9 (eqt. to pawl 206 of the main Specification) steps wheel 200 anticlockwise to its zero position whereupon the delivery ceases, the spring 8 being tensioned thereby. Prior to the next fuel delivery pawl 9 is released and the wheel returns clockwise under the power of spring 8 until the abutment 6 is stopped by a further abutment presented by the preselector. When the coin-operated preselector is used the wheel (400) (of the main Specification) drives wheel 1 to set the further abutment 4 on wheel 3. When the button set preselector is used the end of the selected button forms the further abutment. Pawl (214) (Fig. 2 of main Specification) prevents return of wheel 200 while pawl 9 is operating, both pawls being released when the wheel 200 rotates under the action of spring 8.
Patent GB-1266631-A (GB)
IPC: G03B21/32
Filed: 1969-05-22
Abstract: 1,266,631. Film cartridges. EASTMAN KODAK CO. May 22, 1969 [May 23, 1968], No.26256/69. Heading G2E. [Also in Division G5] A cartridge for cine film or other strip material has a rib 100 which engages a complementary formation on the wall 16 of a projector or other apparatus to locate the cartridge in an operative position, surface 103 of the rib engaging groove 50, and upper surface 105 of the lower portion 100a of rib 100 engaging locating and latch member 60 to prevent horizontal and vertical cartridge displacement respectively. Camming face 60a of spring-loaded latch 60 permits vertical insertion of the cartridge 90 down into front-loading chamber 30 with door 40. During loading and unloading of the cartridge, the driving spindle 18 of the apparatus to retracted by lever 22, the spindle also being movable laterally to engage the hubs of differently sized cartridges. Spindle 18 may be automatically extended when release member 25 senses the presence of a cartridge.  Spring 74 biases the cartridge upwardly against  latch 60 which may be manually released by lever 64.  In a modification, Fig. 5, the cartridge is  moved sideways into a side loading chamber 166, horizontal groove 202 on the cartridge sliding over guiding ridge 200 on the projector until.surface 103 of rib 100 abuts locating edges 186. Rib surface 105 engages surface 190 and is cammed beneath locating surface 192. A spring-loaded latch-hook 214 engages rib 100 to cartridge in position until released by lever 218.
Patent GB-1289296-A (GB)
IPC: E05F15/04
Filed: 1968-10-15
Abstract: 1289296 Window opening device ARENS CONTROLS Ltd 15 Oct 1969 [15 Oct 1968] 48925/68 Headings E2F and E2M A vent opening and closing arrangement comprises a frame bounding the vent, a flap pivoted to the frame and a device for pivoting the flap including a crank arm rotatable on the frame about an axis parallel to the plane of the frame, the swinging crank arm end being connected by a first universal joint to one end of a strut whose other end is connected by a second universal joint to the flap for movement relative to the flap only about the pivot axes of the second universal joint. The arrangement may comprise, Fig. 1, a casement window 9 pivoted by the rotation of arm 1 via strut 3 and universal joints 2. The arm may be arranged to rotate through 180‹ between top and bottom dead centres relative to strut 3. The arm may be rotated, Fig. 2, by pneumatic or hydraulic piston-and-cylinder actuator 13 acting on rack 12 to turn pinion 11 which is rigid with arm 1 and coaxial with arm pivot 7. The actuator may be doubleacting, or single-acting with a spring 14 to open or close the window. Alternatively (Figs. 3 to 6, not shown) the actuator's piston rod may be coupled to the arm, e.g. a pivoted linkage. The window may be acted on by a plurality of arm-strut devices operated by a common actuator. In a further embodiment, the arm is rotated by a worm meshing with a worm wheel attached to the arm.
Patent GB-1289908-A (GB)
IPC: D01H13/18
Filed: 1970-05-04
Abstract: 1289908 Stop motion SOC MANUFACTURE ALSACIENNE DE BROCHES 4 May 1970 [19 June 1969] 21458/70 Heading DID A yam break detection device comprises an oscillating two arm lever carrying a feeler which is intermittently placed against a run of the yam, or an intended path therefor. The lever also carries a means for stopping the supply of yarn upon breakage thereof. As shown, the yarn feeler is mounted on one arm of a lever 11 which is oscillated by a cam 13. The oscillating movement of the feeler is limited by the yarn, if present. If the yarn breaks the arm 11 moves to an extent sufficient to permit clamp 16 to clamp, and/or cut, the yarn end. A plurality of levers 11 may be mounted on a single shaft with this shaft being controlled so as to oscillate a plurality of levers.
Patent GB-1290751-A (GB)
IPC: A47B88/493
Filed: 1970-01-14
Abstract: 1290751 Sliding drawers A ARENSON Ltd 13 Jan 1971 [14 Jan 1970] 1730/70 Heading A4B A sliding drawer assembly includes at each side 17 of the drawer an extension rail 9 supported at its rear end by a wheel 7 engaged in a rail 1 fixed to a carcass 28 housing the drawer and by a wheel 13 fixed to the carcass 28 forwardly of the front end of the fixed rail 1, the extension rail 9 being disposed in a laterally open recess 18 in the drawer side 17 and slidably supporting the drawer through spaced, interposed bearing balls 20. Stops are provided to limit inward and outward movement of the drawer relative to the extension rail 9 and of the latter relative to the carcass 28.
Patent GB-1304183-A (GB)
IPC: G03B21/64
Filed: 1969-06-24
Abstract: 1304183 Identifying code-marked objects photo-electrically KODAK Ltd 18 June 1970 [24 June 1969] 31874/69 Heading G1A [Also in Divisions G2 and G4] To identify a characteristic of an object the object bears two optically detectable marks having a particular angular separation in relation to a point or axis. To determine the separation the surface of the object bearing the marks is scanned photo-electrically in a circular scan and clock pulses counted in the interval between scanning the marks. Photographic film cannisters bear on a top or bottom surface marks having a different reflectivity to the rest of the surface and located on the same or different circles about the axis of the cannister. The separation may be up to 180 degrees in steps of 9 degrees. Fig. 3 shows a scanner for marks located on the same circle. The cannister 2 is positioned under the scanner with the axis in line with the axis of the scanner. A disc 40 is rotated via a motor driven friction wheel 41 and carries a lens 42 which directs light through its outer half from a lamp 32 on the surface of the cannister 2. A photo-cell 36 contained in a light shielding housing 34, supported by vanes 35, scans a circular path on the surface of the cannisters via the inner half of the moving lens 42. Castellations 43 in an upstanding wall of the disc interrupt light from a light guide 44 to a photo-cell 45 which thereby generates clock pulses which are counted in a counter for several cycles of the disc. Should the count exceed the equivalent of 180 degrees during the first cycle, the counter is reset to start counting on the next mark, scanned. In another arrangement of scanner, Fig. 1, (not shown) a rotating prism directs light to and receives light from the cannister.
Patent GB-1311555-A (GB)
Title: Apparatus for testing cans
IPC: G01M3/32
Filed: 1970-10-28
Abstract: 1311555 Can testing apparatus BORDEN Inc 28 Oct 1970 51142/70 Heading G1S [Also in Division F2] A can testing apparatus includes a chamber 12 for receiving a can 39 being tested, means for supplying high pressure gas to a can within the chamber through a valve (47 Fig. 1 (not shown)), means for exhausting gas from the chamber through a valve (52) to a pressure sensing means (58) these valves being arranged to operate non- synchronously, gas being supplied to the chamber before the chamber is brought into communication with the pressure sensing means, and a third valve interposed between the supply valve and the chamber to permit gas to enter the chamber only when a can is present. As described chamber 12 has a closure cap 13 with an axial bore 21, and the third valve comprises a spool 25, slidable within bore 21, having a central bore 32, a can-rim-contacting rubber disc 30 at one end, a flange 26 at the other end which carries a sealing O-ring 36. The bore in the spool communicates with an enlargement 23 in the bore in the cap (in which flange 26 moves) through ports 34. Spool 25 is biased towards the chamber by spring 37. When a can is present the rim engages rubber disc 30 and the sealing ring 36 is held clear of its seat on the closure cap and high pressure air can enter the can. In the absence of a can in the chamber, the sealing ring 36 is pressed against the closure cap and no gas can pass to ports 34 and thence the chamber, so that the pressure sensing bellows and microswitch (58 Fig. 1 (not shown)) is not damaged by a pulse of high pressure air. The rubber disc is mounted on a steel disc 28 held on the spool by nut 29. The gas injection and exhausting valves (52, 47) are rotary disc.
Patent GB-1319960-A (GB)
Title: Flooring material
IPC: D04H1/645
Filed: 1969-11-29
Abstract: 1319960 Self seating carpet tile DUNLOP SEMTEX Ltd 5 Nov 1970 [29 Nov 1969] 58476/69 Heading B5N A self-seating carpet tile comprises a wearing layer of needled fibres or of fibres of one material needled into an open-weave fabric of the same or different material attached to a backing layer of plastics or rubber, wherein the wearing layer is formed from fibres having an average water absorption of less than 2%. The fibres may be polypropylene, polyester or acrylic fibres and the needled layer may contain up to 25% of fibres, e.g. nylon, having a water absorption value of above 2%. The backing layer may be a vulcanized rubber, a thermoplastic rubber such as a styrene-butadiene block copolymer or a vinyl resin, e.g. polyvinyl chloride or a copolymer of vinyl chloride with vinyl acetate, vinyl ether or propylene and may be cellular or non- cellular or a laminate of two such layers. A reinforcing layer of jute or glass fabric may be sandwiched between the wearing layer and the backing. The layers may be united by heat and pressure and may then be cut into tiles.
Patent GB-1327253-A (GB)
Title: Machine tools having interchangeable tool carrying units
IPC: B23Q11/08
Filed: 1970-11-16
Abstract: 1327253 Tool changing MOLLART ENG CO Ltd 9 Nov 1971 [16 Nov 1970] 54422/70 Headings B3B and B3C A machine tool has a head 10 comprising at least two units, 11, 12, one of them, unit 12, being placed in an operative position, said head being pivotable to another position in which said one unit is in an inoperative position in which tools may be removed therefrom or placed therein, the other unit being in the operative position and a movable structure 35 is movable along a slideway 34 to engage the operative unit to move it to a working position, the structure having drive means for driving the tools on the unit. Each unit is releasably connected to a rectangular member 16 by two pins 24. The mechanism for this is a pin 27 which engages a groove 28 in a pin 24. Pin 27 moves out of engagement when a groove 30 in a further pin 29 aligns with pin 27. Normally each pin 29 is biased by a spring 31 to a position where it projects rearwardly of the respective unit. Indexing movement of the member 16 is controlled through a servo motor and a rack and pinion. A stationary pivot holder 18 is fixedly mounted to a fixed base member 20. The movable structure 35 is movable along slideway 34 by a double acting servomotor 36. Alternatively feed may be by a nut and lead screw. Forward movement of the structure causes it to abut and be attached to unit 12 through pins 45 and 48. Pins 48 are operated by a servo clamp 46. This abutting also causes movement of pins 29 so that the unit is released from pins 24. The forward feed may be a fast advance followed by a movement controlled by a cam 55 that rotates through 360 degrees during a machining operation. The tools are driven by an electric motor 39 through gearing 40, a plurality of output shafts 41, one only being shown, clutch parts 42, 50, shafts 51 and gearing 52. Sequential operation of the machine can be by a number of valves or in the case whereby feed is by a lead screw and nut by trip or limit switches. The tools in the head may be for drilling, milling, boring tapping or grinding. The machine may have guard members secured to the base on each side. Each guard has an outwardly curved section to allow for the movement of the units. The guards also support a pivotable trip guard movable for access to the machine and controlling operation of the machine by engagement with a limit switch. Pivot member 16 may have safety guards attached one to each side which move within the outer fixed guards.
Patent GB-1329318-A (GB)
Title: Acid analyser
IPC: G01N1/20
Filed: 1971-12-01
Abstract: 1329318 Sampling process stream and measurement of its acidity &c TEXACO DEVELOPMENT CORP 1 Dec 1971 55684/71 Heading B1X [Also in Division G1] Apparatus for sampling a product stream flowing under super-atmospheric pressure in lines 11, 13 and making measurements of the acidity or basicity of a liquid constituent of the sample comprises upstanding column 21, lines 16, 18 for feeding a part of the stream under pressure to the columns and allowing the required constituent to settle in the column, auxiliary path 28, 30 for flow of the settled portion back to the stream, means 29 for removing a sample of the settled constituent from the auxiliary path and means 46 for making the acidity or basicity measurements on the removed sample. The constituent to be determined may be the aqueous acid constituent of an oil-alkylation process stream. A sample of the settled acid phase is flushed by wash medium from sampling valve 29 into automatic titration vessel 46 for titration with alkali (see Group Gl).
Patent GB-1331611-A (GB)
Title: Process for cleaning apparatus contaminated with polyester melts
IPC: C08G63/78
Filed: 1970-11-30
Abstract: 1331611 Polyesters CHEMIEFASERKOMBINAT SCHWARZA "WILHELM PIECK " VEB 30 Nov 1970 56719/70 Heading C3R In a process for the production of polyethylene terephthalate by the esterification of terephthalie acid with ethylene glycol or by the transesterification of dimethyl terephthalate with ethylene glycol and subsequent polycondensation of the ethylene glycol ester thus obtained to give a polyester melt which is then extruded or moulded, apparatus contaminated with the polyester melt produced is cleaned by introducing a polyester melt-dissolving substance, after completion of extrusion or moulding, into the apparatus to be cleaned immediately after the polycondensation stage and recirculating the products obtained by the action of the polyester melt-dissolving substance to the esterification, transesterification or polycondensation stage. The melt-dissolving substance may be a starting material for the production of the polyester and/ or an intermediate product of the polyester production, e.g. terephthalic acid ethylene glycol ester, a corresponding oligomeric mixture thereof and/or ethylene glycol, or terephthalic acid is used to produce the ester, steam above a temperature of 200‹ C. In Fig. 1, at the end of the extrusion process the transesterification product of the next batch in reaction vessel 1 is recycled via granulation device 4 to be cleaned, the two heated circulation pipes 5 and filter 6, for removing solid impurities, back to the transesterification process in reaction vessel 1, it being possible to maintain the circulation during the whole of the transesterification process. Before extrusion of the batch present in the condensation vessel 2, the circulation pipe is emptied into the transesterification vessel 1. Circulation is maintained by pump 3 which also serves to convey polyester melt from the condensation vessel to granulation device 4 when valve 7 is open. In alternative arrangements, the transesterification product which serves as polyester melt-dissolving substance is circulated through the granulation device to be cleaned back to the condensation vessel, or steam at a temperature above 200‹ C. or heated ethylene glycol is circulated through the granulating device to be cleaned back to the esterification or transesterification stage.
Patent GB-1333585-A (GB)
Title: Biological aerated filters
IPC: C02F3/04
Filed: 1970-09-07
Abstract: 1333585 Biologically filtering waste liquid J TYMOSZCZUK 7 Sept 1970 42718/70 Heading C1C A process of purifying domestic or industrial waste comprises passing the waste under gravity, pressure or vacuum through a biological aerated filter having one or two layers of filter medium (e.g. sand, gravel, anthracite) which layers are maintained in a submerged condition during the passage of waste therethrough and in which one or both layers are aerated with compressed air or with air drawn therethrough by vacuum and periodically backwashing the layer or layers. The layers may be backwashed separately or together using water and if desired air. The waste may be passed downwardly or upwardly through the filter and may be countercurrent or cocurrent to the air. The particle size and specific gravity of the filtering material may be different in adjacent layers. In Fig. 4 the filter comprises a tank 1 (e.g. concrete or steel), waste inlet 2, distributing troughs 7, filtering layers 5 and 8, air inlets 6 and 9 and waste outlet 3.
Patent GB-1334064-A (GB)
Title: Gear cuttiang machines
IPC: B23F23/12
Filed: 1970-11-30
Abstract: 1334064 Gear-hobbing COMBINED ENGINEERING PRODUCTS Ltd 23 Nov 1971 [30 Nov 1970] 56726/70 Heading B3K A machine for cutting large gears 1, comprises a gear support 10, a carriage 8 guided for movement around the gear 1, drive means 19 for propelling the carriage, a gear-cutting tool 26, mounted on the carriage, and means for controlling the position of the tool in relation to the position of the carriage so as to ensure a predetermined path of movement of the tool with respect to the workpiece. Gear 1 is secured to pillars 10 and carriage 8 is adapted to run around the workpiece by rollers 14-18, rollers 15, 16 being driven by an hydraulic motor 19 through a variable speed drive. The pressure of engagement of the rollers can be adjusted by hydraulic motors 20-23. As carriage 8 rotates around the gear 1 it rotates a radial indexing arm 24, whose position is continuously monitored, and a signal derived by a sensor 37. Tool 26 is a hob which is connected to a sensor so that a signal corresponding to the rotational position of the hob can be compared with the signal from sensor 37 and any correction can be made so as to rotate the hob drive motor 27. In operation, the movement and position of carriage 8 are determined by drive motor 19. The signal from sensor 37 is representative of the carriage position, and the movement and position of the hob are determined by motors 27, 30, 32. When a closed loop servo-control is used, Fig. 3, the signal at 36 is compared with the signal at 37, and if required control 34 varies the position of the hob by actuating motors 27, 30, 32. The servo-control may be replaced by a gear drive. The weight of carriage 8 is taken by a chassis 38 mounted on castors 39 and carrying jacks 41, 45.
Patent GB-1342930-A (GB)
Title: Pulse width modulation systems
IPC: H02M7/497
Filed: 1972-05-22
Abstract: 1342930 Inverting; control of AC motors ELECTRICAL RESEARCH ASSOCIATION 22 May 1972 [21 May 1971] 16281/71 Headings H2F and H2J A method of generating a pulse width modulated waveform which may be integrated to form a generally sinusoidal waveform comprises feeding two square waves to respective inputs of either an exclusive-OR or an equivalent gate, the square waves having a difference in frequency equal to the required frequency of the waveform to be synthesized. As described, a square wave oscillator M1 feeds two bi-stable divider circuits B1, B2 which divide the frequency by different amounts to provide two signals differing in frequency by an amount equal to the required frequency. Three-phase signals at the B1 frequency fAO (Fig. 2a) are derived by a ring counter end fed to exclusive-OR gates G1 ... G6 which are controlled by a square wave at the B2 frequency fBO. The outputs of gates G1 ... G3 shown at fCO are fed to control switching devices S1 ... S6 which control the AC to a motor having windings L1 ... L3. Exclusive-OR gates G4 ... G6 are controlled by a square wave fB1 obtained by delaying the input to a further divider B3. The effective voltage applied to the motor L1 ... L3 is varied by adjustment of the delay imposed on the input to divider B3. Figs. 3a, 3b (not shown) relate to waveforms showing the reversal of phase rotation occurring when frequency fB is made greater than fA.