baber/WOPTO huggingface dataset:
Patent GB-647104-A (GB)
Title: Pipe union
IPC: F16L37/23
Filed: 1948-05-04
Abstract: 647,104. Pipe couplings CARRET, L. May 4, 1948, No 12209. [A Specification was laid open to inspection under Sect 91 of the Acts, Nov. 20, 1948] [Class 99(i)] A rubber ring 10 is corripressec in the bottom of a socket 2 by a spigot 3 when a groove 4 of the spigot is engaged by at leas three balls 8, housed in the socket wall, the balls being moved radially inwards by a ring 5 slidingly fitted over the socket. The free end of the ring may be flared.
Patent GB-1469435-A (GB)
Title: Optical sensor for determining the focussing error in an optical illumination system embodying a projection lens
IPC: G03B13/36
Filed: 1974-03-19
Abstract: 1469435 Determining the focusing error of a projecting lens THOMSON-BRANDT 19 March 1974 [19 March 1973] 12215/74 Heading G1A [Also in Division G3] In a device for automatic focusing or for measuring the focusing error of a projection lens 7, coherent light from a source 16 is projected on to a reflective surface 3 containing a track for recording or playback. The radiation reflected off the surface is received by at least one detector 12 or 15 positioned so that its output charges in response to intensity received due to the changes in the diffraction pattern formed in the detector's sensitive surface when the relative position between the projecting lens and the surface is varied. The central maximum of the diffraction pattern is substantially equal in size to the photo-sensitive area of one of the detectors used. In Fig. 1 the position of a body 2 containing the reflective surface is retroactively controlled by a motor 6 in response to the output of a differential amplifier 13. The inputs correspond to the output signal of two detectors 12 and 15 which are respectively positioned to be at the conjugate points corresponding to the focal points A 1 , A 2  corresponding to the two extreme positions 3, 4, solid and dotted lines, of the body 2. Thereby the body is maintained at its correct position where its surface is at the focus A of the lens 7. In Fig. 5, light from a source 30 is directed via a modulator 31, receiving a signal M(t), and an automatically focused projecting lens 35, on to the surface 50 of a moving tape to record the signal thereon. The lens 35 is maintained focused on the tape surface 50 with the aid of a further light source 43 directing light via a filter 45, of a wavelength not found in the source 30, and a semi-reflector 32 on to the surface. The reflected light beam is received, as shown, by photo-detectors 39 and 40 which operate via a differential amplifier 41 in a similar fashion to Fig. 1, to control the position see arrow 35, of the lens 33. A modification, Fig. 4 (not shown) is disclosed wherein one source is used for recording and automatic focusing, the automatic focusing circuit using light intensity frequencies for control that are not contained in the modulation signal. In a further similar embodiment the light reflected off the surface is received by a detector 46 that is vibrated by an electromagnetic motor 52 supplied with an A.C. signal from a generator 45. The detector's 46 output is passed via an amplifier 53 to a synchronous detector 54 which also receives an A.C. signal from the generator 45 and whose output after passing through a low pass filter 42 can be used to control a motor 36 that adjusts the corresponding lens 33. The description includes diagrams illustrating the diffraction patterns formed and the output signal waveforms of the detectors.
Patent GB-714371-A (GB)
Title: Cyclohexylphenyl ketones
Filed: 1952-05-14
Abstract: The invention comprises (1) compounds of the formula <FORM:0714371/IV (b)/1> where Y is hydroxy or acyloxy (not over 15 carbon atoms) and R is -COCH2Z or -CH2COCH2Z, Z being chlorine, bromine or iodine; (2) the following compounds when made by the processes described below: (a) Y = keto, Z = as in (1); (b) Y = hydroxy or acyloxy, Z = hydroxy or acetoxy; (c) Y = keto, Z = hydroxy.  The compounds where R is -COCH2Z are made from acyloxycyclohexylbenzenes by Friedel-Craft condensation with a haloacetyl chloride or bromide to give p-(acetoxycyclohexyl) - phenacyl halides which on acid hydrolysis yield p-(hydroxycyclohexyl)-phenacyl halides, oxidized by chromic acid to (ketocyclohexyl) - phenacyl halides.  The hydroxycyclohexyl and acetoxycyclohexyl compounds are converted into the corresponding phenacyl acetates by treatment with potassium acetate and the hydroxy compound can then be oxidized with chromic acid to p-(ketocyclohexyl)-phenacyl acetate.  Finally all three phenacyl acetates are hydrolysed with potassium bicarbonate in aqueous methanol, yielding p - (acetoxy - cyclohexyl) - phenacyl alcohol, p-(hydroxycyclohexyl) - phenacyl alcohol and p-(ketocyclohexyl)-phenacyl alcohol.  For the series where R is -CH2COZ, p-(acetoxycyclohexyl)-acetophenone is converted by the Willgerodt reaction into p-(acetoxycyclohexyl)-phenylacetic acid, re-acetylation being necessary, and the acid treated with thionyl chloride and diazomethane to give p-(acetoxycyclohexyl)-benzyl diazomethyl ketone.  The latter gives (1) p - (acetoxycyclohexyl) - benzyl halomethyl ketone with ethereal hydrogen halide; (2) p - (acetoxycyclohexyl) - benzyl acetoxymethyl ketone with potassium acetate; and (3) p - (acetoxycyclohexyl) - benzyl hydroxymethyl ketone with dilute sulphuric acid.  The halomethyl ketone is hydrolysed by alcoholic mineral acid to p-(hydroxycyclohexyl)-benzyl halomethyl ketone which with potassium acetate produces p-(hydroxycyclohexyl)-benzyl acetoxymethyl ketone.  The two last named are oxidized with chromic acid to p-(ketocyclohexyl)-benzyl halomethyl ketone and p-(ketocyclohexyl) - benzyl acetoxymethyl ketone respectively. The acetoxymethyl compounds on treatment with potassium bicarbonate in aqueous methanol yield p-(hydroxycyclohexyl)-benzyl hydroxymethyl ketone and p-(ketocyclohexyl)-benzyl hydroxymethyl ketone.  Examples are given of the above reactions.  In each case the compounds where Z is iodine are made not directly but by treating their bromine analogues with sodium iodide.
Patent GB-703356-A (GB)
Title: Improvements relating to prepayment attachments for commodity-measuring meters
Inventor: WHITEHEAD MAURICE
IPC: G07F15/06
Filed: 1950-05-17
Abstract: 703,356. Prepayment meters with price changing mechanisms. FERRANTI, Ltd. May 16, 1951 [May 17, 1950], No. 12261/50. Class 27 Meter-controlled apparatus assisted by spring wound by prepayment. The force exerted by a spring to reduce the mechanical load on the meter is varied with the ratio of a price-change gear between the meter and the spring so as to keep the load on the meter constant. In the illustrated prepayment attachment for an electricity meter the knob 53 which controls the ratio of an auxiliary (coarse) price-change gear 43 between the meterdriven shaft 44 and the quantity mechanism 12 is connected by gearing 55, 62, 64 to a gear 34 which carries the anchor of the spring 33 which assists the meter to return the quantity mechanism. The main (fine) price-change gear (not shown) is connected to the coin-receiving mechanism and drives a sun wheel 11 of the quantity mechanism the other sun wheel 35 of which is driven through gearing 37, 40, 42 and the auxiliary price-change gear 43 from the meter while the planet carrier 13 is connected by gearing 15, 16, 20, 25, 21, 26 to slow and fast cams 23, 24, controlling the supply switch in the usual way, and through gearing 15, 13, 31 to a spindle 32 secured to the spring 33. Price-change mechanism. The auxiliary price-change gear 43 comprises a cage 45, 46 rotated through gearing 56, 55 from the knob 53 and carrying at 120-degree intervals pinions such as 50, 51, 52 of which the pinions such as 50, 52 are in constant mesh with a gear 47 on the shaft 44 while the pinions such as 50, 51 are moved into mesh with the gear 42 by rotating the carriage. A ball 61 carried on an arm 60 fast with the knob 53 indexes the knob. A gear 43 illustrated provides ratios of 1:4, 1:1 and 4:1.
Patent GB-119491-A (GB)
Title: Junction Box Coupling for Electric Conduits.
Inventor: SCISM JOHN NIVER
IPC: H02G3/06
Filed: 1917-08-27
Abstract: 119,491. Scism, J. N. Aug. 27. 1917. Junction boxes.-In connecting an electric conduit to a junction box, the end of the conduit has one or more lips 13 manually bent therein which lipped end is engaged by a member connected to the box to retain the conduit in fixed relation therewith. In the construction shown in Fig. 1. the lipped end 5 of the conduit is engaged by a split sleeve 6 having a threaded end S on which a nut 9 is screwed to secure the conduit to the box. Fig. 2 shows a modified arrangement. In anotlter modification, the junction box is formed with an external nipple which receives the lipped end of the conduit, a screw-threaded split sleeve screwing into the nipple to secure the conduit.
Patent GB-1249395-A (GB)
Title: Low frequency signal amplifier
Inventor: ANDERSSON HANS BERTIL
IPC: H03F3/387
Filed: 1969-03-07
Abstract: 1,249,395. Amplifiers. BOFORS A.B. 7 March, 1969 [11 March, 1968], No. 12285/69. Heading H3T. A chopper-type amplifying arrangement comprises a first modulator 3 feeding into the input of an amplifier 5, the output of which is connected to a rectifier 6. A first feedback path is connected between the output of the amplifier 5 and input of the first modulator 3, comprising in series a first demodulator 10 and first integrating circuit 11, the first demodulator 10 receiving a drive voltage of the same frequency as that for the first modulator and of such phase that the demodulated voltage will have a polarity opposite to that of an unbalance voltage produced by the first modulator. A second feedback path is connected between the input and output of the amplifier 5, comprising in series a second demodulator 13, a second integrating circuit 14 and a second modulator 15 which is driven by a drive voltage of the same frequency as that for the first modulator, but has such a phase relative to the output voltage of the amplifier that the voltage fed from the second modulator 15 to the input of the amplifier counteracts such components of the output of the amplifier 5 as are 90 degrees out of phase with the drive voltage for the first modulator 3. In the embodiment, the input from terminal 1 is fed to the first modulator 3 via a matching unit 2, and the outputs from the first and second modulators are combined in a summing device 4. The modulators and demodulators are driven from an oscillator 8, the drive for the second modulator 15 and second demodulator 13 being applied over a 90 degree phase shifter 16. Limiters 9, 12 are interposed between the output of the amplifier and the demodulators 10, 13 respectively. The integrating circuits 11, 14 are of long timeconstant, the time constant of circuit 11 being longer than that of circuit 14. The arrangement may use transistors.
Patent GB-782732-A (GB)
Title: Improvements in or relating to fluid pressure operated apparatus for mechanically propelled vehicles
IPC: B60K25/10
Filed: 1952-05-15
Abstract: 782.732. Fluid pumps on motor vehicles. BISHOP, R., JOHNSTON, R. H., and WHITLOCK, G. B. R. Aug. 17, 1953 [May 15, 1952], No. 12361/52. Classes 79(2) and 79(3) [Also in Group XXXII] A vehicle has low-pressure hydraulic reservoir 18 and. a high-pressure hydraulic reservoir 17 supplying accessories e.g. power assisted steering gear A, while hydraulic shock-absorbers 1 associated with the axle of each wheel act as pumps to withdraw liquid from the low-pressure reservoir into the shock-absorbers and to expel liquid from the shock-absorbers into the lowpressure reservoir. As shown each of four oil filled shockabsorbers 1 has its cylinder 2 connected to the vehicle frame and its piston rod 6 connected to the associated wheel axle, movement of the latter causing movement of the piston 5 relative to the cylinder 2. Each of the cylinder spaces 8, 9 have an outlet 10 and an inlet 12. Associated with the outlets 10 are non-return valves 11 which are connected by pipes 37, 36 to a high pressure reservoir 17 having an airfilled flexible bag 19. Associated with the inlets 12 are non-return valves 13 which are connected by pipes 30, 29 to a lowpressure reservoir 18, the reservoirs 17, 18 being interconnected by a pressure release valve 20. The arrangement is such that on wheel movement the pressure in one of the cylinder spaces 8, 9 builds up and if this pressure exceeds that set by the valve 11 oil passes from the space to the reservoir 17, when the pressures in the reservoirs 17, 18 are sufficiently different oil passes into the reservoir 18 from whence "make-up" liquid can pass back into the cylinder spaces. The reservoir 17 supplies pressurized oil to a power assisted steering gear A which exhausts to the reservoir 18. When the pressure is insufficiently high in the reservoir 17, a priming pump 32 can be operated either manually or from the vehicle engine.
Patent GB-779175-A (GB)
Title: Improvements in or relating to drainage devices for compressed air supply pipelines
IPC: F04B39/16
Filed: 1955-04-29
Abstract: 779,175. Draining compressed air systems. MOORE, J. F. & BOSKETT, C. E. March 13, 1956 [April 29, 1955], No. 12404/55. Class 8(1) An automatically selfdraining device for attachment at a low point in the pipeline of a compressed air supply apparatus comprises a spring loaded valve 6 adapted to be held closed by air pressure within the pipeline but adapted to open under the action of its spring 8 when the air pressure is cut-off and thus to establish an outlet to the pipeline.
Patent GB-128450-A (GB)
Title: Combined Bottle-stopper Remover and Corkscrew.
Inventor: WARD WILLIAM GLEN
IPC: B67B7/44
Filed: 1918-07-31
Abstract: 128,450. Ward, W. G. July 31, 1918. Corkscrews; internally-stoppered bottles, opening; prising-tools for removing capsules.-A combined bottle-stopper-remover and corkscrew consists of a plate or frame A having two apertures B, C of. different sizes, an inverted V-shaped or triangular recess D in the end or side, a pin E projecting from one end, and a corkscrew H formed on or fixed to the plate. Th larger aperture B is used for levering-off crown-corks as shown in Fig. 2, and the other aperture C acts as a wrench or key for removing screw-stoppers. The recess D is used for removing ordinary glass and like stoppers, and the pin E, which is preferably circular, in cross-section, has flanges or collars F, G, for opening internally-stoppered bottles. Two semi-circular recesses J, K, formed in the side of the plate A that carries the corkscrew H, provide a finger-grip. The plate A may be angled, flanged, or ribbed to increase its strength.
Patent GB-847624-A (GB)
Title: Improvements in or relating to friction brakes
IPC: F16D65/14
Filed: 1957-04-17
Abstract: 847,624. Friction brakes. TERRA ESTABLISSEMENT. April 17, 1957 [April 17, 1956], No. 12507/37. Class 103 (1). In a friction brake, the non-metallic or composition friction surfaces are spaced apart in staggered relationship and disposed in different adjacent rotational zones relative to the rotatable metal friction surface. In the internal shoe-drum brake illustrated, friction linings 19 are secured to the brake shoes 16 in the manner illustrated; such that lining unit 19a is spaced axially from lining unit 19b and lining unit 19c is located diametrically opposite units 19a and 19b to operate in the intervening zone of the brake drum 10. The combined area. of the lining units 19a, 19b on one side of the axis is approximately equal to the combined area of the unit or units 19c on the other side of the axis so that the braking pressure and friction effects are substantially reduced, both axially and diametrically.
Patent GB-646138-A (GB)
Title: Improvements in or relating to disc gramophone records
IPC: G11B3/70
Filed: 1947-05-08
Abstract: 646,138. Gramophone records. HUMPHREY, L. J. May 8, 1947, No. 12524. Drawings to Specification. [Class 40 (ii)] In disc gramophone records a part on each side clear of the needle track and within the periphery of the disc is provided with raised projections engaging between corresponding raised portions of an adjacent record so that positive drive is transmitted between some at least of the contacting sides of the projections when the records are stacked on a turntable. The raised portions may be sectoral ribs integrally moulded on the centre of a record or on discs fixed thereto, or may be separately applied to the record using a perforated template. The discs may be transparent to permit reading the label or the latter may be applied over and conform to the shape of the raised portions. Alternatively, the raised portions may be provided by discs of sandpaper or emery paper secured to the records. Should the raised portions rest on one another in a record stack, initial slip between them takes place so that the records fall into engagement.
Patent GB-626212-A (GB)
Title: Manufacture of tampons
IPC: A61F13/20
Filed: 1946-04-26
Abstract: 626,212. Tampons. ROSENTHAL, D. A April 26, 1946, No. 12608. [Class 81(ii)] A tampon comprises a longitudinally extending holding-member, e.g. made of yarn, to which is attached a plurality of loop members arranged therearound in turns which are positioned longitudinally of the holding-member, the loops being composed of an absorbent material, e.g. absorbent cotton or other absorbent cellulosic material, and the tampon being provided with withdrawal-member. The loops may be helically spaced around and radiate from the holding member which may be composed of a plurality of threads which fasten each loop at its apex to the holding member. The loops of one turn may overlap those of another turn, the exterior surfaces of the loops comprising fibres disposed in a relatively straight manner with one another while the interior surfaces are buckled to provide voids between the fibres. According to one embodiment, the tampons are made by forming the holding member from a plurality of threads supplied from bobbins which are fitted on carriers A, B. C and D and guided around in a serpentine path by means of horn gears positioned between plates 2 and 3, the threads forming a braid around a pin 7 positioned in the working tube 9 of a chamber 10 to which suction is applied by a fan 11. When a pre-determined length of braid is formed sufficient to act as a withdrawal member of a finished tampon, roller-assemblies 17-20 are set in motion and a sliver 15 of absorbent material is passed therethrough and caught at loop forming intervals by threads A, D, the sliver being fed to the pin 7 at a speed greater than that at which the braid is formed. The process is continued until a tampon of suitable length is formed, after which feeding of the sliver is stopped while braiding on pin 7 is continued, the downward movement of the already formed tampon through tube 9 breaking the sliver. Braiding is continued to form another withdrawal member, the rollers 17-20 again started and the cycle repeated. Predetermined lengths of braid 22 with loop members are ejected periodically from pin 7 by a reciprocating sleeve 23 connected to a crank 25 actuated by a cam 26. The braid 22 with tampons at spaced intervals continuously pass through rollers 13 and 14, tensioning rollers 33, knives 35, to a receiver 36.
Patent GB-771076-A (GB)
Title: Improvements relating to flat knitting machines
Inventor: HOLMAN ALFRED JOHN
IPC: D04B7/04
Filed: 1954-04-30
Abstract: 771,076. Knitting-machines. ROWLEY & CO., Ltd., R. May 2, 1955 [April 30, 1954], No. 12609/54. Class 74 (2). A single racking cam 23 is provided in a parallel bed machine and is provided on one face with a cam formation 23a for shogging one bed one needle space for the purpose of forming rack stitch effects as in a welt, and on the other face with a cam formation 23b adapted to effect shogging to the extent of approximately half a needle space in order to juxtapose the needles for transfer of loops from needles of one bed to the needles of the other. A loop spreader 8 is provided on the side of each needle or interspersed needles of one bed to facilitate the loop transfer from the needles of the one bed to those of the other when it is desired to vary the type of rib knitting or to produce a plain fabric. A shoulder 11 is also provided on these needles adjacent the spreader 8 so as to engage the needle loop when the needle is projected by the cams of the lock during the carriage traverse and to hold the loop to enable the corresponding needle of the opposite bed to pass through the loop as that needle is projected by its own transfer cam. The needle having the spreader 8 is then recessed as at 6b to receive the opposite needle during loop transference.
Patent GB-1475185-A (GB)
Title: Thermally operated electrical switches
IPC: H01H37/52
Filed: 1974-03-21
Abstract: 1475185 Thermal switches SATCHWELL CONTROLS Ltd 21 March 1975 [21 March 1974] 12617/74 Heading H1N In a thermally operated switch having an overcentre switch blade 11, Fig. 3, carrying a contact 9, the blade 11 and a bimetal prime mover 29, 33 have relatively fixed mountings 27, 35 and are engaged with each other at a point 37 whereby the switch blade 11 is held against its mounting 27 and the bimetal prime mover 29, 33 is biased into contact with an abutment 41, 45 for adjusting the operating temperature of the switch, the point 37 on the bimetal prime mover 29, 33 moving with respect to the mountings 27, 35 with change in temperature so as to operate the switch. The switch blade 11 and an ambient temperature compensating bimetal strip 33 connected to an operating bimetal strip 29 are pivotally mounted in V-grooves 27, 35 in a terminal 25. A leg 21 of the switch blade 11 is fitted into a V-groove 37 in the bimetal 33 such that it is compressively stressed, the blade 11 causing the bimetal 29 to urge a pivotable plate 43 carrying an adjusting screw 41 into engagement with a cam 45 rotatable by a control knob (47) (Fig. 2, not shown). When the cam 45 is rotated clockwise, the bimetal assembly 29, 33 is rotated anticlockwise causing the contact 9 on the blade 11 to snap into engagement with a contact 5 on a terminal 7 whereupon a load (69) (Fig. 4, not shown) connected to the switch and a heater 31 connected in circuit with the bimetal 29 are energized. Heating of the bimetal 29 by the heater 31 causes the contacts 5, 9 to open whereafter the contacts 5, 9 are cyclically closed and opened. The temperature at which the contacts 5, 9 open and close is set by the position of the cam 45, the load (69) being continuously energized at the full on position defined by a notch 75. Rotation of the cam 45 also causes a spring 59 to be moved out of a notch 73 and a flexible strip 57 fixed to the spring 59 to contact a fixed contact (55) on the terminal 7 whereupon a pilot light (71) is operated. Casing parts 1, (2) of the switch are held together by a spring clip.
Patent GB-686509-A (GB)
Title: Method of producing sugar colour in a solid state
IPC: A23G3/32
Filed: 1951-05-30
Abstract: Solid sugar colour is made by heating sugar with some water to produce a brown mass to which a binding agent is added before all the water is evaporated, cooling the mass and grinding it, in the presence of such a quantity of a volatile organic liquid that it will evaporate completely during grinding, and making the pulverised product into tablets.  Preferably the binding agent is added when the sugar colour is relatively easy flowing and heating is continued until the sugar colour contains only 5 per cent water.  Ether, acetone and chloroform are suitable organic liquids.  The binding agents are preferably water absorbing materials, e.g. potato starch, but gelatine, alginic acid, rubber, resins and the like may be used. The tablets may be covered with sugar, agar-agar or the like.  An example is given.