baber/WOPTO huggingface dataset:
Patent GB-1019417-A (GB)
Title: Improvements in or relating to circular knitting machines
IPC: D04B15/68
Filed: 1963-12-24
Abstract: 1,019,417. Knitting machines. CAROLINA KNITTING MACHINE CORPORATION. Dec. 24, 1963 [Dec. 24,1962], No. 50833/63. Heading D1C. A circular knitting machine comprises rockable selector jacks 33 which are selected by detector fingers 47 operated from a pattern mechanism 32 and a selector jack stabalizing cam 83 which operates on the jacks 33 when they are in the position to be selected by the selector fingers 47. The patterning mechanism 32 is rotated by a pawl Fig. 3 (not shown) 61 against a friction brake 71, reverse movement being prevented by a locking pawl 67. The pattern drum 32 is prevented from overrunning the stopping position at high speed by a locking device 82 which is operated in conjunction with the driving pawl 61 by a linkwork 87, 90. The surface of the locking device is inclined as at 92 Fig. 7 (not shown) to assist insertion between the projections 56 on the pattern wheel. The cam system comprises a levelling cam 77 which raises the selector jacks 33 to a position where they can be selected. Towards the end of the top level surface of this cam the tops of the selector jacks receive an inward thrust (relative to the needle cylinder) from the pushout cam 78 which pushes the bottoms of the selector jack outwardly. The levelling cam 77 is followed by a stabilizing cam 83 which has a first top surface 100 at a lower level than the surface 99 of cam 77 in order that  selectors not already raised by the cam 77 due to improper positioning can be raised and pushed inwardly by the pusher cam 78. The inclined surface 104 of the stabilizing cam 83 has an outward declination to hold the selector jacks in position prior to selection. The final top surface of this cam is either flat or has a similar declination to the surface 104 and at this point the jacks are selected by the selector fingers 47 Fig. 14 (not shown). At this point they are either pushed into the inoperative position (shown in full lines) or left in an operative position (shown in broken lines) where they are lifted by the jack operating cam 36 which also has an outwardly declined top surface. The needles have an enlarged cheek to enable the loops to overcome the centrifugal forces on the needle latches.
Patent GB-1516745-A (GB)
Title: Process for the production of nitric acid
IPC: C01B21/26
Filed: 1975-12-12
Abstract: 1516745 Nitric acid SOC ITALIANA RESINE SIR SpA 12 Dec 1975 [20 Dec 1974] 51048/75 Heading C1A Nitric acid of # 98 weight per cent concentration is produced from a gaseous flow obtained by catalytic oxidation of ammonia and containing NO and water vapour, wherein the water is removed from the gaseous flow and the NO is converted into NO 2 , the NO 2  is converted into superazeotropic HNO 3  by chemical absorption in aqueous HNO 3  and the superazeotropic HNO 3  is submitted to distillation, wherein: (a) the gaseous flow 30 is fed at 180-200C at the bottom of a column 10 for the condensation of the water vapour and the oxidation of the NO, at the top of which is fed aqueous HNO 3  of 40-60 weight per cent concentration 32; the column is operated in countercurrent at a pressure greater than atmospheric and not exceeding 10 absolute atmospheres and at a temperature at the bottom of from the boiling point of the aqueous solution at 30 weight per cent HNO 3  to the boiling point of the azeotrope HNO 3 /H 2 O and at a temperature at the top of from the condensation point of NO 2  to the condensation point of water vapour; a gaseous flow 31 containing the NO 2 , practically devoid of water and NO is recovered at the top and HNO 3  of 30-55 weight per cent concentration 32 is recovered at the bottom; (b) a portion of the nitric acid recovered in (a) is recycled to the top of the oxidation column after cooling 18 and the remaining portion 33 is delivered at an intermediate level of a distillation column 11 operating at atmospheric pressure, so as to recover azeotropic HNO 3  34 at the bottom and water vapour 34 at the top; the water vapour being condensed 19 and a portion 35 of the condensed water 27 being recycled as reflux to the column, whereas a part 38 of the remaining portion 36 is discharged; the azeotropic nitric acid 34 being recycled to the top of the column of (a), after suitable cooling 18; (c) the NO 2  31 recovered in (a) is liquified 24 (optionally after absorption in intermediate column 12 followed by distillation 16 of the superazeotropic HNO 3  40 so produced), mixed with aqueous nitric acid 47 admixed with the remaining portion 37 of water of (b) which is not discharged and brought into contact with air 50 in a chemical absorption stage 15 to give superazeotropic nitric acid 51; and (d) the superazeotropic nitric acid 40 is distilled 16 to produce nitric acid 54 of # 98 weight per cent concentration.
Patent GB-1204425-A (GB)
Title: Slit lamp device
IPC: G02B7/04
Filed: 1968-10-28
Abstract: 1,204,425. Slit lamp device. CARL ZEISSSTIFTUNG. Oct.28, 1968 [Oct.27, 1967], No.51057/68. Heading G2J. A slit lamp device in which an illuminated slit diaphragm (not shown) is mounted in casing 1, Fig.2, at the focus of a lens 1a so that parallel light impinges on a second lens 1b and is reflected by a mirror or prism 17 to an eye O, the vertical angle α of incident light is changed by sliding and pivoting the reflector 17 and simultaneously sliding the lens 1b to keep the image in focus at eye O. By rotating sleeve 7, and hence cam ring 10, lens carrier 12, which is prevented from rotating by a tongue 13 in sleeve 2, being slidably engaged in a vertical groove in the periphery of carrier 12, is moved along the axis. The cam surfaces 8 and 9 are such that the subsequent total vertical movement of the lens carrier 12 and lens mount 14 together with the rotations of the reflector keeps the image in focus. Pins 20 and 18 supporting lens mount 14 and reflector holder 15, respectively, are resiliently held against the cam surfaces by springs (21), Fig.3 (not shown), and 19. The longitudinal position of sleeve 2 on the slit lamp tube 1 is fixed by pin 3 with set screws 4 and 5. Another embodiment shown in Fig.4 achieves the same results by means of the cam surfaces 37 and 38. A projection 54 from the edge of the lens carrier 35 rides on the cam surface 38 and is resiliently held in engagement by spring 55. A reflector 32 is mounted on a carrier 33 which has a rear wall 33a which rides on the cam surface 37. One end of a steel blade 39 is attached to 33a and the other end wound around a reel 41. By turning knob 40 the steel band makes the reflector 32 and lens 1b move in the required fashion.
Patent GB-1309122-A (GB)
Title: Process for the manufacture of phosphoric acid esters and phosphonic acid esters
IPC: C07F9/12
Filed: 1970-04-01
Abstract: 1309122 Preparation of phosphoric and phosphonic acid derivatives CIBA-GEIGY AG 1 April 1970 [2 April 1969] 15419/70 Heading C2P Compounds of the Formula I where R 3  and R 4  are C 1-4  alkyl and X is oxygen or a direct P-R 3  bond, are prepared by a process in which a compound of the formula ROH where R is optionally substituted aliphatic, araliphatic, heterocylic, aromatic or the radical of an enolized compound or the radical of Formula II  where one of R 1  and R 2  is hydrogen, cyano or -N(R 6 )(R 7 ) where R 6  is hydrogen or C 1-4  alkyl and R 7  is hydrogen, C 1-4  alkyl or aryl and the other of R 1  and R 2 , or both R 1  and R 2  is or are optionally substituted aliphatic, araliphatic, heterocyclic or aromatic, or phenyl substituted by the also reacting group -C(CN)=N-OH, or where R-OH is a hydroxylamine optionally substituted by alkyl, aryl or acyl, is reacted with trichlorobromomethane and a phosphorus compound of Formula III where R 5  is C 1-4  alkyl. The process may be carried out in the presence of one or more solvents which are free of hydroxyl groups and at a temperature of 0 to 100 C.
Patent GB-1327626-A (GB)
Title: Internal combustion engine operating with exhaust gas turbo supercharging
IPC: F02B37/02
Filed: 1970-10-29
Abstract: 1327626 Turbo-charged I.C. engines MASCHINENFABRIK AUGSBURG-NURNBERG AG 29 Oct 1970 [8 Nov 1969] 51561/70 Heading F1B The engine exhaust gas collector 7 is partitioned into two or more chambers 9, 10 and each chamber is connected to at least two cylinders having their exhaust periods sufficiently spaced to substantially prevent interference with cylinder scavenging. The volumes of the chambers 9, 10 are proportional to the gas flow therethrough and the outlets F11, F12 of the chambers merge into at least one turbine inlet 12 which is common to at least two adjacent chambers. The cross-sectional areas of the outlets F11, F12 are proportional to the respective chamber volumes. A nine or seven cylinder engine, Figs. 2 and 3 (not shown) may have three side-by-side chambers connected to two turbines, the centre chamber being connected to both turbines. The outlets of the three side-by-side chambers may be connected to two side-by-side chambers (66, 67), Fig. 6 (not shown), having outlets connected to a turbine inlet (70). A nine or twelve cylinder engine, Figs.4 and 5 (not shown), may have three or four exhaust chambers connected through respective outlets to a common turbine inlet (60 or 66') two chambers being arranged side-by-side with the third or third and fourth chambers beside and parallel to the first two. The chambered collector may be associated with V or H arranged engine cylinders.
Patent GB-1455675-A (GB)
Title: Production of 2-chloro-1-2-diethylamino-ethyl-5-o-fluorophenyl- 1,3-dihydro-2h-1,4-benzodiazepin-2-one
IPC: C07D243/14
Filed: 1974-11-29
Abstract: 1455675 Benzodiazepines GRINDSTEDVAERKET AS 14 Nov 1975 [29 Nov 1974] 51711/74 Heading C2C 7 - Chloro - 1 - (# - diethylaminoethyl) - 5 - (ofluorophenyl) - 1,3 - dihydro - 2H - 1,4 - benzodiazepin-2-one (I) is prepared by the following route: and may be isolated as the dihydrochloride. The phenyl isocyanate may be replaced by another dehydrating agent.
Patent GB-1187468-A (GB)
Title: Push-Button Assembly
Inventor: SINCLAIR WILLIAM
IPC: H01H13/50
Filed: 1967-11-15
Abstract: 1,187,468. Electric switches; latches and detents. ERICSSON TELEPHONES Ltd. 14 Oct., 1968 [15 Nov., 1967], No. 51917/67. Heading H1N. A push-button for an electric switch has a plunger 2 engaging a leaf spring 3; the plunger or the spring having portions 4, 5 differently inclined whereby the resistance to movement of the push-button is suddenly reduced causing the button to provide a yielding sense to the operator and ensure that the stroke is completed. A bent portion 8 on the leaf spring may be provided to lock the push-button in its operated position.
Patent GB-1376167-A (GB)
Title: Buffing and deburring machine
IPC: B24B55/02
Filed: 1971-11-10
Abstract: 1376167 Abrading TIMESAVERS SANDERS Inc 10 Nov 1971 [24 March 1971] 52294/71 Heading B3D The subject matter of the present Specification is identical with that of Specification 1,376,168 but the claims are directed to a buffing and deburring machine having a rotary brush carried by a spindle in a bearing block supported by a pair of leaf springs, power drive means being connected to the block to impact axial reciprocation thereto and to the spindle.
Patent GB-1425907-A (GB)
Title: Endless link belt with seal
IPC: B62D55/088
Filed: 1973-11-13
Abstract: 1425907 Track links FIAT-ALLIS CONSTRUCTION MACHINERY Inc 13 Nov 1973 [16 Nov 1972] 52593/73 Heading B7H In an endless track belt a side bar 11 has an annular recess 23 disposed in eccentric relation to the pivot pin 16, the recess accommodating an annular seal 31 which is in sealing engagement with the end part of a bushing 19 secured to the other side bar 12. As wear occurs along contact line 38 between pin 16 and bushing 19 side bar 12 and the bushing move longitudinally in relation to side bar 11 and the axis 27 of the outer diameter of bushing 19 shifts to the opposite side of recess axis 24 so that the seal 31 may flex and still retain its sealing capacity.
Patent GB-1244344-A (GB)
Title: Hemagglutination testing procedure employing stabilized and potentiated erythrocytes and a method for their preparation
IPC: G01N33/556
Filed: 1968-11-06
Abstract: 1,244,344. Stabilized erythrocyte preparation. ABBOTT LABORATORIES. 6 Nov., 1968 [13 Nov., 1967; 16 Sept., 1968], No. 52678/68. Heading B1X. A freeze-thaw and storage stable erythrocyte preparation is obtained by contacting erythrocytes in separate steps with minor volumes, relative to the volume of the erythrocytes of pyruvic aldehyde and of formaldehyde, preferably in that order. The stabilized erythrocytes can then be sensitized with an antigen or antibody. Before or after the sensitization step, they may be potentiated by one of the following treatments:-cooling to about -190C and maintaining at about -20C for about 16 weeks; cooling to about -190C then allowing the erythrocytes to warm to 24C and then re-cooling at 6 or 7 day intervals for about 6 weeks; treating the erythrocytes with a solution of an oxidising agent, for example sodium periodate; or, before sensitising with antigen or antobody, the erythrocytes may be treated with fibrinogen. The erythrocytes may be rabbit, rat, pigeon, sheep, chicken or human cells. The antigen may be bovine serum albumin (BSA) exemplified, insolubilized BSA, human serum albumin, rabbit gamma-globulin, human gamma-globulin, streptococcal M protein, ragweed antigen "E". polysaccharide antigens such as E, coli endotoxin (ET), acetylated ET, succinylated ET, de-esterified ET, de-esterified and bromacetylated ET, synthetic polyglucose, RNA-bacteriophage QB, Entamoeba histolytica.
Patent GB-1210675-A (GB)
Title: Improvements in or relating to rosin reaction products
IPC: C08L93/00
Filed: 1967-11-21
Abstract: 1,210,675. Rosin compositions and soaps. TENNECO CHEMICALS, Inc. 21 Nov., 1967 [23 Nov., 1966], No. 52987/67. Heading C4D. [Also in Divisions C3 and D2] A rosin is reacted with 4À5% to 8% of its weight of formaldehyde and/or acetaldehyde in the presence of sulphuric acid or an organosulphonic acid having 1 to 10 carbon atoms at a temperature between the melting point of the rosin and 225‹ C., the reaction mixture is maintained at this temperature for at least 10 minutes, the catalyst is neutralized with a basic material, the mixture again maintained at the elevated temperature for at least 10 minutes, and then the product is blended with an amount of unreacted rosin such that the blend contains from 2% to 4% of the aldehyde in reacted form based on the total weight of the rosin. The blend may be further reacted with an α,#-unsaturated carboxylic acid or anhydride in an amount of 0À25% to 8% by weight of the blend, by heating at 160‹ to 220‹ C. The products are saponified to form size and made into aqueous pastes for use in the manufacture of paper. In examples tall oil rosin and wood rosin are reacted with formaldehyde in the presence of p-toluene sulphonic acid and sulphuric acid, the catalysts being neutralized with sodium hydroxide and blended with unreacted rosin; some of the blends are further reacted with fumaric acid; size pastes are obtained by saponification of the blends (whether or not reacted with fumaric acid) with sodium hydroxide and potassium hydroxide.
Patent GB-1194743-A (GB)
Title: Drum Brake with at Least Two Axially Adjacent Pairs of Brake Shoes
IPC: F16D65/22
Filed: 1967-11-21
Abstract: 1,194,743. Internal shoe drum brakes. DEUTSCHE PERROT-BREMSE G.m.b.H. 21 Nov., 1967 [23 Nov., 1966; 21 April, 1967], No. 52988/67. Headings F2E and F2F. A brake comprises at least two pairs of shoes disposed axially side by side in a brake drum, the ends of axially adjacent shoes being connected by pressure members 25, 25<SP>1</SP>, Fig. 6, which respectively bear on adjacent shoes, an expander 13 being disposed between the pressure members 25, 25<SP>1</SP> of opposed shoes, rollers 27, 27<SP>1</SP> being interposed between the expander 13 and the pressure members 25, 25<SP>1</SP>, each roller being rotatably connected to a laterally hinged radius rod 24, 24<SP>1</SP>, the pressure members 25, 25<SP>1</SP> being axially displaceable relative to the brake shoes. This ensures that when the expander 13 moves in a direction parallel to the brake drum axis, no axial movement will be transmitted to the brake shoes 3 ... 6. As shown in Fig. 6, the pressure members 25, 25<SP>1</SP> are coupled to the shoes 3 . . . 6 via balls 42 located in recesses in the pressure members 25, 25<SP>1</SP> and in intermediate members 43. The balls 42 are retained by a spring clip 46. Intermediate members 43 engage shoe ends 44 by sliding contact surfaces 45. In Fig. 3 (not shown) members 42, 43 are replaced by hemispherically ended cylinders. Mounting brake shoes.-The shoes 4, 6 (Fig. 4) are located axially by springs 7 bearing against a lipped plate 2 secured to backing member 1. Further spring (Fig. 5, not shown) hold shoes 4, 6 in axial frictional contact. Return springs (Fig. 1, not shown) are fitted to the non- actuated ends of opposite shoes and between the actuated ends and the backing member 1. Fluid pressure control of brakes.-As shown in Fig. 2, hydraulic fluid enters port 33 and displaces a piston 31 against the force of a spring 30. This action forces hydraulic fluid through ports 34, 17 so as to displace piston 18 to the right against the force of spring 20, thus displacing expander 13 (Fig. 6) downwards. A tube 37 located in the end of cylinder 16 co-operates with a valve 32 so as to provide automatic slack adjustment.
Patent GB-1453706-A (GB)
Title: Circuit for the generation of a reference voltage
IPC: G05F3/22
Filed: 1973-11-16
Abstract: 1453706 Automatic voltage regulation ITT INDUSTRIES Inc 16 Nov 1973 [18 Nov 1972] 53315/73 Heading G3X A reference voltage circuit includes a pair of voltage-dividing resistors receiving an input voltage via a dropping resistor and connected across a pn-junction device in series with a transistor whose base is connected to the mid-point of the voltage divider. A stabilized voltage is available across the main electrodes of the transistor. As shown, a stabilized voltage U A  for an integrated circuit is taken at the collector of a transistor T1 connected in series with a diode D across resistors R2, R3 which receive a supply UE over a voltage dropping resistor R1. The diode D may be replaced by the base-emitter path of a further transistor complementary to the transistor T1, Fig. 2 (not shown). It is stated that stabilized output voltages lower than the base-emitter threshold voltage of transistor T1 are obtained.
Patent GB-1532670-A (GB)
Title: Automotive transmission shifting mechanisms
IPC: F16H59/02
Filed: 1976-12-23
Abstract: 1532670 Change speed control TOYOTA JIDOSHA KOGYO KK 23 Dec 1976 [28 Dec 1975] 53771/76 Heading F2D To prevent the transmission of vibration and other movement to the knob 8 of a ball-mounted gear shift lever 7 from the transmission case 13, a support rod 10, hinged transversely to the case at 15, is secured to a yoke 11 pivotal on transverse bolts 12 to depending links 4, which can pivot on transverse floor-mounted pins 5 and carry a spherically bushed socket 6 receiving a spherical part 9 of the shift lever 7, the lower end of which latter has transverse pivotal connections 17a, 18a through an inclined control rod 16 with the usual slide-turn selector rod 19 projecting from the transmission ease 13. The ratio between the distances from the shift lever knob 8 to the lower end pivot 17a and to the shift-lever ball 9 is equal to that between the distance from the pivots 5 to the pivots 12 and to the centre of the ball 9 (see Fig. 5, not shown), whereby any rearward movement of the transmission case 13 causes the yoke 11 to swing about the link pivots 5 whilst the lever 7 pivots about the ball 9, with the lever knob 8 providing an unmoved instantaneous centre. The spherical bushing 6b for the lever ball 9, and the lever end bushing 17b are of nylon, whilst the bushings 12b, 15b and 18b are of softer rubber. The pivot 18a may be replaced by a Hooke's type universal joint.
Patent GB-1130431-A (GB)
Title: Communication switching systems
Inventor: EWIN JAMES COE
IPC: H04Q3/00
Filed: 1965-12-20
Abstract: 1,130,431. Automatic exchange systems. WESTERN ELECTRIC CO. Inc. 20 Dec., 1965 [29 Dec., 1964], No. 53884/65. Heading H4K. In a concentrator system of the kind described in Specification 957,477, which employs two pairs TS0, RS0 and TS1, RS1 as a signalling channel between the remote unit and the control unit at the central office CH3, provision is made for switching the signalling circuits to an alternative channel in the event of failure of the normal channel. The system described includes a PBX which has several lines leading to the remote unit and also has tie-lines connected to another office LT1 available from the central office CH3. When the normal signalling channel fails, switching operations occur at both ends, and at the control unit a repertory dialler is effective to set up connections in turn over two tie-lines via CH3 and LT1 to the PBX and thence over two lines to the remote unit. An alternative signalling channel is thus established, and converters are provided at each end for changing the normal D.C. signals to multifrequency signals.
Patent GB-1404486-A (GB)
Title: Machine tool chucks
IPC: B23B31/30
Filed: 1972-11-22
Abstract: 1404486 Chucks PAUL FORKARDT KG 22 Nov 1972 [25 Nov 1971] 53988/72 Heading B3B  A rotary chuck comprises two clamping jaws 7, 8, pressure operated clamping means to move at least one of the jaws 7 radially relative to the axis or rotation X-X of the chuck to clamp a workpiece 9, and indexing means operative on at least one of the jaws 8 to index the clamped workpiece 9 through a predetermined angle about an axis Y-Y perpendicular to the axis of rotation X-X, the clamping jaws 7, 8 each having a pair of spaced apart clamping grooves 7a, 8a that engage projections on the workpiece 9 that lie at respective corners of an imaginary three-dimensional tetrahedral body. In the embodiment described the indexing means acts on jaw 8, and jaw 7 has a part that can rotate about axis Y-Y on a piston 4 that clamps the workpiece. In the machining of valve seatings in a valve body it may be necessary to offset the workpiece slightly from the axis Y-Y. This is achieved either by providing a laterally displaceable clamping adaptor on the jaw 7 (Figs. 8, 9, not shown) or by arranging the grooves 7a and workpiece projections offset from axis Y-Y by one half the required offset, so that in one position the offsets cancel out, and by turning the jaw 7 through 180 degrees the required offset is achieved. The indexing means (Figs. 3 and 4, not shown) comprises two pressure operated rods having inclined faces that alternately engage flats on a shaft to index the shaft through 45 degrees at the operation of each said rod.
Patent GB-1403705-A (GB)
Title: Calculators
IPC: G06F15/02
Filed: 1972-06-15
Abstract: 1403705 Calculators HEWLETT-PACKARD CO 15 June 1972 [15 June 1971] 54012/74 Divided out of 1403710 Heading G4A The description is part of that of Parent Specification 1,403,710 but the claims are directed to a calculator having a keyboard input unit, a first read/write memory, a second memory storing routines and subroutines, a processor and control means for redefining non- aliphatic keys of the keyboard as alphabetic keys. As described this may be effected when either an alpha or typewriter read only module is plugged in to the calculator.
Patent GB-1495978-A (GB)
Title: Flame retardant polycarbonate composition
IPC: C08K5/36
Filed: 1974-12-16
Abstract: 1495978 Flame-retardant polycarbonate compositions GENERAL ELECTRIC CO 16 Dec 1974 [28 Dec 1973] 54141/74 Heading C3R A flame-retardant composition comprises a polycarbonate and an alkali metal or alkaline earth salt of a sulphonic acid of an aromatic ketone. The salt is preferably present in an amount of from 0À01 to 10 weight per cent based on the polycarbonate. Many salts are specified, e.g. dipotassium anthraquinone-2,6- disulphonate and the benzophenone compound of the formula