baber/WOPTO huggingface dataset:
Patent GB-1381421-A (GB)
Title: Photographic apparatus for use with film cassettes
IPC: G03B21/00
Filed: 1973-02-15
Abstract: 1381421 Photographic apparatus POLAROID CORP 15 Feb 1973 [17 Feb 1972] 7518/73 Headings G2E and G2X A photographic apparatus for use with a film cassette within which there may be performed (a) a first program comprising processing the film within the cassette (preferably together with projection of the processed film and rewind); and (b) an alternative second program including projection of the film (and preferably also rewind), the cassette carrying an indication of whether or not processing of the film has been completed, in which the apparatus comprises a receiver for holding the cassette, a sensor for sensing the indication of the inserted cassette, and means responsive to the output of the sensor for selectively enabling the performance of the first or second program, the second program only being performed if the film has been processed. As shown, the cassette used is generally as described and claimed in Specification No. 1326826 in which processing liquid 95 is applied to the film 24 in cassette 10 through an aperture 124 in a reservoir (102) of the liquid. Before processing, aperture 124 is sealed by a slider 140 Fig.5; in order to effect processing slider 140 is moved to the right Fig.6 (not shown) so that an aperture 156 therein is aligned with aperture 124; at the completion of processing slider 140 is moved further to the right Fig.8 (not shown) to reseal aperture 124 and is prevented from returning by engagement of an arm 212 with a latch 210. This movement of slider 140 causes an arm 172 to close an initially open switch 184 which thus serves to indicate that the film has been processed. On insertion of the cassette in projector 174 a logic circuit (320) senses whether switch 184 is open or closed and thus initiates either processing, e.g. program (a), or projection, i.e. program (b). The completion of film winding and rewinding is sensed by micro-switch arrangements (216), (218) Fig.7 (not shown).
Patent GB-1451988-A (GB)
Title: Filling valves for pressure refuelling devices
IPC: F16K1/12
Filed: 1974-02-20
Abstract: 1451988 Valves ZENITH AVIATION 20 Feb 1974 [17 April 1973] 7727/74 Heading F2U [Also in Division G3] A fuel filling valve arranged to move in the closing direction with increasing fuel flow comprises an outer casing 2 having inlet and outlet connections 9, 6 and containing a core 3 slidably supporting a piston 25 integral with a valve member 24 co-operating with seat 28. Piston 25 encloses a chamber 30 which is connected to the fuel inlet 9 via ducts 31, 33, 38, 42 containing a non-return valve (36 Fig. 2, not shown). During operation chamber 30 is normally vented to outlet 6 via duct 40, orifice 18, non-return velve 22 and ducts 20, 21 such that the pressure of the main fuel flow through annular duct 7 surrounding piston 25 overcomes the force of spring 29 and the fuel pressure within chamber 30 causing piston 25 to move valve member 24 leftwards to an open position. With increasing fuel flow a flanged control sleeve 43 slidably moves rightwards against spring 46 to uncover apertures 44 and thus increase the flow through duct 33 etc into chamber 30 The resulting increase in pressure in the latter causes valve member 24 to move rightwards and thus decrease the main flow. Control sleeve 43 may be assisted or replaced by a control sleeve 47 which is moved rightwards by increasing flow to decrease the outlet orifice 50 of vent duct 21 from chamber 30, thus increasing pressure in the latter. The filling valve can be shut by deenergising a solenoid 13 causing a valve 17 to block orifice 18 and prevent venting of chamber 30. Solenoid 13 is controlled manually or automatically in response to a level contact or float. In a modification (Fig. 3 not shown) control sleeves 43 or 47 are replaced by a flanged sleeve (54) axially slidable within the main flow duct 7 and having a frusto-conical portion (56) defining a variable flow passage with core 3. As the main flow increases sleeve (54) moves rightwards to reduce the flow passage and thus the pressure acting on the exterior of piston 25. The latter thus moves valve member 24 rightwards to decrease the main flow.
Patent GB-237538-A (GB)
Title: Improvements in or relating to regulating means for electric circuits
IPC: G05F1/52
Filed: 1924-03-27
Abstract: 237,538. Robinson, J. March 27, 1924 Thermionic valve circuits.-A regulating arrangement for a direct current circuit for avoiding changes of current due to generator ripples when the prime voltage is supplied from a generator, comprises in series with the circuit, a thermionic valve working at a constant saturation value, this being obtained by heating the filament to a constant temperature. In Fig. 2, the regulating valve 1 is in series with a load comprising a resistance 5 which is tapped at 6, 7, 8 and in Fig. 3 the filaments 9 of the valves of the wireless set to be regulated are included in series, tappings being made at 6, 7. The cascade arrangement shown in Fig. 5 comprises a second regulating valve 1<x> in series with a second resistance 5<x> across the resistance 5, the resistance 5<x> being tapped at 6<x>, 7<x>. The filament of the regulating valve may be heated by the mains, a rheostat being placed in series with it, and a three-electrode valve, may be employed with its anode grid connected together. Current smoothing means may also be used and may comprise in series with the circuits supplied an impedance and capacity in parallel or barretters may be used in the load circuit. If the supply is alternating the current is first rectified as by a valve, or, if the load is a number of valves of a wireless system the latter may be heated directly therefrom through a transformer, the grid and anode circuits being connected to a mid-point tapping of the secondary winding of the transformer.
Patent GB-608934-A (GB)
Title: Improvements in and relating to flexible power transmission members
IPC: F16C1/02
Filed: 1943-05-19
Abstract: 608,934. Flexible cables and shafts. TELEFLEX PRODUCTS, Ltd., (formerly M.R.C., Ltd.), and PILE, S. May 19, 1943, No. 7945. [Classes 80 (i), 80 (ii) and 80 (iii)] Relates to a flexible power transmission member of the type consisting of a cable adapted to transmit pull and push and torsion and having an inner core of a number of wires arranged in long-pitch formation on which is laid a single or multi-start helical layer or layers of wire from the outermost of which a single or multi-start. wire helix 12 projects for driving or driven engagement with a suitable part such as a gearwheel. According to the invention, any wire in the structure, other than the projecting wire 12 is replaced by a member, the exterior surface of which has projections and depressions of such character that the projections come within a circle, the diameter of which is equal to that of the single wire which the member replaces. Such member may comprise a single wire Ml of polygonal cross-section having a twist imparted thereto. The member may consist of two wires 9 of circular crosssection twisted together as at M. Alternatively, as shown at M<2>, the member may consist of a single-start helically arranged wire 11 laid around a central wire 10.
Patent GB-1416910-A (GB)
Title: Ac generator system including differential protection of exciter
Inventor: SOUTH W H
IPC: H02H7/06
Filed: 1973-02-19
Abstract: 1416910 Protective arrangements WESTINGHOUSE ELECTRIC CORP 19 Feb 1973 [16 March 1972] 7996/73 Heading H2K An A.C. generator 12 of the kind having its field winding 10 energized by an exciter 14 with a D.C. field winding 20 is provided with a protective system having means to derive a first signal from the voltage applied to, or the current flowing in, the winding 20, means 38 to derive a second signal representing the vectorial sum of signals representing the current and voltage in the armature winding of the A.C. generator, and means to produce a third signal representing the difference in magnitude of the first and second signals. As shown, the secondary windings of voltage and current transformers 40, 46 are connected across a rectifier 50 in a differential circuit so that the rectified vectorial sum is in opposition to a voltage derived from a resistor 41 connected across, or in series with the exciter field circuit. The difference voltage is rectified by a rectifier 58 and charges a capacitor 66 in a delay circuit 64, 66. When the capacitor is sufficiently charged, a Zener diode 62 breaks down causing a transistor 60 to conduct to energize a relay 56. The relay closes its contacts 68 to complete a fault indicating or shutdown circuit.
Patent GB-291908-A (GB)
Title: Improvements in and relating to liquid fuel furnace fronts
IPC: F23D11/00
Filed: 1927-03-23
Abstract: 291,908. McKean, J. G., and Jones, R. F. March 23, 1927. Liquid-fuel fittings. - Relates to the control of the secondary air supply in a liquid-fuel furnace front. Vanes 1. extending close up to, but not into, the furnace opening 4 and adapted to impart a swirling motion to the secondary air, are located be. tween an outer casing 9 and an intermediate casing 2 and are axially adjustable by means of rods 8 and a supporting ring 7. The casings 9 and 2 are carried respectively by the inner front 5 and the outer front 6, and there is a third or inner casing 17 within which the atomizer is mounted. The casing 9 stops short of the front 6 leaving a gap for air admission (forced or induced) under control of a valve 11, and the casing 2, which extends approximately to the furnace opening 4, is carried so as to leave a primary air supply opening controlled by a valve 15, air valves being provided at 16. The inner ends of the vanes 1 may be cut at an angle as shown, and the casing 9, instead of being parallel, as shown in Fig. 1, may taper inwards, so that the vanes when drawn outwards leave a certain amount of clear space through which air passes without being swirled. This is shown in Fig. 3, which illustrates the application to a Howden forced draught front,.
Patent GB-577255-A (GB)
Title: Improvements relating to stoves for drying foundry moulds and cores or other like articles or materials
IPC: B22C9/14
Filed: 1944-04-28
Abstract: 577,255. Heating gases by direct contact. NEUSTADTER, D. April 28, 1944, No. 8011. [Class 64 (i)] [Also in Group XII] A stove for drying foundry moulds, cores &c. comprises a drying-chamber a to which gases are supplied from a fireplace c through an opening f. Air and gases are withdrawn from the chamber a through a flue m by a fan i arranged at the side of the fireplace in a chamber having a curved roof which is continued over the fireplace. The fan delivers the gases over the fireplace where they mix with fresh gases from the fire and pass again to the chamber a. Excess gases pass from the chamber a through a damper-controlled flue o. Two fireplaces may be employed and the fan may be arranged in an iron chamber connected to the fireplace as above described. A baffle is arranged in the fireplace to deflect the gases from the fan. The fireplace may burn solid, liquid or gaseous fuel.
Patent GB-512943-A (GB)
Title: Improvements in electric organs
IPC: G10H3/03
Filed: 1938-03-15
Abstract: 512,943. Electrical musical instruments. GENERAL ELECTRIC CO., Ltd., and BIGGS, A. J. March 15, 1938, No. 8013. [Class 88 (ii)] In instruments of the type in which the capacity between two electrodes is varied by the movement between them of a member such as an apertured disc, so that a high frequency voltage applied to one of the electrodes is modulated by an audio-frequency, generating electrodes co-operating with a plurality of rings of apertures corresponding to the partials of one note are connected together for control by the single key of that note. The Figure shows diagrammatically the arrangement for two notes an octave apart, rings of holes for the partials of other notes, intermediate to those marked In, 2n ... on the disc 1, not being shown. Substantially pure sine-wave modulation may be obtained by circular holes of radius R with centres 2À6 R apart, the radius of the ring of holes being large compared with R. The disc may alternatively be toothed, or a drum substituted. The generating electrodes 7a ... 10a for the note corresponding to a key 15 are connected together. Depression of the key breaks the earth connection 17 and connects to the H.F. oscillator 19 through a condenser. Each order of partials is carried by an output electrode 2, 3 ... having a connection to earth through an element 6 tuned to a high impedance at H.F., and'is regulated in strength by an adjustable condenser 24 ... The combined outputs pass to an amplifier 29 tuned to the H.F., which is followed by a detector and audio-frequency amplifier (not shown). Loudness may be controlled either by varying the tapping 28 on the input impedance of amplifier 29, or by a control of the audio-frequency output. The same electrodes may be used for a plurality of keyboards by allocating a different high frequency to each keyboard, a lead such as 13 being branched and connected to the same key on the different keyboards. Each branch may still be earthed when only the corresponding key is undepressed if condensers are interposed. The output leads 20 ... are also branched with separate adjustable condensers as 24 ..., filters 30 keeping each H.F. to its appropriate condensers. Or the filters may be omitted and separately tuned amplifiers used. Specification 495,271 and U.S.A. Specification 2,001,708 are referred to.
Patent GB-721168-A (GB)
Title: Improvements relating to automatic pressure water supply apparatus
IPC: E03B5/02
Filed: 1952-03-28
Abstract: 721,168. Water supply arrangements. BERESFORD & SON, Ltd., J., and COOKSLEY, B. March 9, 1953 [March 28, 1952], No. 8043/52. Class. 68(1). In order to ensure a sufficient quantity of air in the closed storage reservoir 10 of an automatic pressure water supply system non-return valves 14, 22, 25 are so associated with the supply pipe 11  to the reservoir that on operation of the supply pump 12 a charge of air is forced into the reservoir in advance of the water. The valve 14 is positioned in the pipe to close the passage therethrough automatically on the cessation of pumping whilst the valves 22 and 25 control passages leading into the pipe. The passage controlled by valve 25 enters the pipe 11 at some point between the pump and the valve 14 and that controlled by the valve 22 enters the pipe 11 on either the intake or output side of the pump but always on the pump side of the valve 25 and at a level below that of the valve 14. Both passages controlled by valves 22 and 25 are closed whilst pumping occurs but on cessation of pumping the valve 14 closes and valves 22 and 25 open so that some of the water in the pipe 11 on the pump side of the valve 14 drains away past valve 22 and is replaced by a quantity of air passing valve 25. This air is forced into the reservoir on the recommencement of pumping. A valve 26 is incorporated in the reservoir 10 to permit escape of air therefrom if the quantity therein exceeds a given amount. On either the hydraulic or pneumatic pressure within the reservoir going beyond certain limits the circuit of the electric motor 19 of the pump 12 is completed or interrupted.
Patent GB-153832-A (GB)
Title: Improvements in and relating to animal traps
IPC: A01M23/18
Filed: 1920-03-18
Abstract: 153,832. Hovell, T. M. March 18, 1920. Animal traps.-A cage trap of the kind described in Specifications 18679/11, 19052/13, and 125,566 is provided with pivoted spring or gravity doors having releasing-mechanism operated by a treadle furnished with an adjustable stop for limiting its movement. Fig. 2 shows the closed trap with the top and the front wall removed. The inclined or vertical doors A, A<1> are pivoted near the top, and are provided with projecting arms B, C in their own planes. When the trap is set, the doors A, A<1> and arms B, C are horizontal, and the arm B passes over the bent end of the arm C and is held by the looped arm F of a pivoted three-armed lever. Another arm of this lever carries a weight R, and the third arm G engages a lug or recess K of the treadle plate H. The counterweight L of the treadle rests on a stop consisting of an adjustable screw in a frame fixed to the floor. Pivoted wires S, S<1> may be provided to prevent the doors being raised by an imprisoned animal. They fall with the doors under the action of springs or gravity and engage with the turned-up extremities T, T'. Fixed cross-wires X, X<1> are also provided to prevent the escape of small animals. The trap may be made of wire, expanded metal, wood, &c.
Patent GB-1512143-A (GB)
Title: Headrest for a car seat
IPC: B60N2/48
Filed: 1976-03-02
Abstract: 1512143 Headrest RECARO GmbH & CO 2 March 1976 [26 March 1975] 08279/76 Heading A4J A headrest for a car seat comprises a pair of mounting rods 15 pivotally connected to mounting bodies 10 attached to the inner surfaces of both the front and rear walls 4', 6' of a hollow frame 2 about which a cushion 1 is foamed. The bodies each comprise a pair of side plates 11 inter-connected by a yoke 20 and having bent over sections 12 welded to the front and rear walls. Aligned apertures in the side plates receive a bolt 13 which pivotally connects the mounting body to its respective rod. The yoke is provided with an aperture 17 through which the upper end of the mounting rod extends, the edges of the aperture limiting pivotal movement of the rods. Friction discs 16 together with an appropriate clamping force exerted on the two side plates 11 by the bolt 13 and a nut 14 hold the headrest in position.
Patent GB-983743-A (GB)
Title: Device for the mechanical treatment of the vertebral column and its associated bone structure
IPC: A61H1/00
Filed: 1961-03-07
Abstract: 983,743. Spinal traction apparatus. H. SCHMIDT. March 7, 1961 [March 9, 1960], No. 8314/61. Heading A5R. Spinal traction apparatus comprises a reciprocable main carriage 4 carrying a patient support table 14, 15 and rigid pelvis cups 10, separate auxiliary carriages 21, 22 slidable on the main carriage and carrying holders 24, 27, 28 for the head and shoulders, and means restraining movement of the auxiliary carriages as the main carriage is reciprocated to cause relative movement between the pelvis cups and the holders. A frame 1 is pivoted about a horizontal axis 3 on a support 2 and may be secured in an inclined position, or rocked about the axis 3 by a strut 61, 62, the length of which is adjustable by an electric motor. A main carriage 4, which is reciprocable longitudinally of the frame 1 by a horizontal drive shaft 5 engaging a rotatable cam 9 driven by an electric motor, carries a supporting surface 14 for the patient. Rigid cups 10, which in use grip the patient's pelvis, are mounted on the main carriage. Forked shoulder holders 24 and a head holder comprising a rigid chin support 28 and a rigid neck support 27 are mounted on auxiliary carriages 21, 22 respectively, which are slidable along horizontal rods 20 of the main carriage. Adjustable lateral supports 25 support the arms of the patient close to his body. The carriage is reciprocated according to the cam path 7 of the cam disc 9, so that the patient's spine is alternately extended and released in the region between the pelvis cups and the shoulder or head holders. Movement of the auxiliary carriages 21, 20 with the main carriage is limited by springs 35, 40, which may be adjusted to permit a desired spinal extension. The patient's knees are supported on rollers 42 which are vertically reciprocated counter to one another, rods 43 of adjustable length supporting the rollers being connected with cranks 44 rotatable by an electric motor. The suporting rods pass through guides 46 which are moved with the main carriage. The cam path 7 is such that the carriage is accelerated towards the end of its movement in the direction of extension of the body, and then remains stationary at full extension for a short period before returning to its starting position. The supporting surface 14 may be vibrated up and down by cams 18 carried by a rotatable camshaft 16.
Patent GB-323162-A (GB)
Title: Improvements in bottle washing machines
IPC: B08B9/36
Filed: 1929-03-14
Abstract: 323,162. Barford & Perkins, Ltd., and Perkins, F. A. March 14, 1929. Bottles, washing. - A washing-machine for single bottles comprises a high speed internal brush which cleans the inside ofa bottle and rotates it against a nest of external brushes held in a frame. The source of power may be a steam turbine 1 or an electric motor driving an internal brush 3 so as to rotate a bottle against contoured detachably fixed upper and lower brushes 7, 8, &c. and rotary side brushes 10, Fig. 2. The brushes are covered by a spring pressed detachable cover 13. Specification 291,620, [Class 19, Brushing &c.], is referred to.
Patent GB-1478732-A (GB)
Title: Apparatus for immobilising a working shaft at a predetermined angular position
IPC: G05D3/14
Filed: 1975-02-27
Abstract: 1478732 Automatic control of speed QUICK-ROTAN BECKER & NOTZ K G 27 Feb 1975 [29 March 1974] 8336/75 Heading G3R [Also in Division F2] In an apparatus for immobilizing a working shaft, as for example of a sewing machine, at a predetermined angular position and employing a clutch element which may be connected to the working shaft or a braking member operated by the action of a regulator controlled in operation by the difference between the actual speed of revolution measured and a predetermined working speed, switches 47, 54 shown in the idle position in Fig. 1 are moved to position 3 to start the machine and an amplifier 34, 35 connected to a clutch winding 36 is energized so that the clutch element connects the working shaft 11 of the machine to a continuously driven spindle. An alternator 10 which may be situated on the shaft 11 and generates a voltage, having a magnitude and frequency proportional to speed of shaft 11 provides a pulsating negative voltage via a bridge rectifier 12 and filter circuit 13, 14 to point 15. The shaft 11 accelerates to a speed predetermined by a control resistor 20 and the clutch is then deenergized and a brake winding 30 energized when a threshold voltage predetermined by a Zener diode 25 is exceeded. Because of the alternating voltage component superimposed on the negative direct voltage component of the actual R.P.M. signal provided by means of the alternator 10 the brake and clutch are subsequently energized and de-energized alternately, the cadence rate depending on the magnitude of the load and the pre-set rated R.P.M. If the switches 47, 54 are moved to positions 4, 5, and 6 contacts 17, 18, 19 are opened consecutively via a mechanical linkage 81 and in view of the changed voltage divider ratio, resistors 20, 23, 57, 58, 59, the negative actual R.P.M. value signal undergoes greater attenuation. The positive bias on the base of a transistor 22 prevails initially and the drive is accelerated to higher speeds and maintained thereat by alternate operation of the clutch and brake. When at position 6 contact 19 is finally opened and the actual R.P.M. signal is cut-off and current fed continuously to the base of transistor 22 so that the clutch winding 36 is continuously energized so the drive runs at maximum R.P.M. without being governed. To stop the drive pedal switches 47, 54 are moved to position 2, the negative actual R.P.M. signal prevails at the base of transistor 22 to block it. Transistor 33 is switched over to block transistors 34, 35 and clutch winding 36 is de-energized. The striking voltage of Zener diode 25 is exceeded, transistors 26, 27 are switched over and the brake winding 30 is energized to reduce the shaft speed to the switch-off R.P.M. determined by resistor 20.