baber/WOPTO huggingface dataset:
Patent GB-505182-A (GB)
Title: Pressure release device for hydraulic variable speed gears
IPC: F16H61/40
Filed: 1937-11-03
Abstract: 505,182. Hydraulic transmission of power. CHILD, A. G. Nov. 3, 1937, Nos. 30068 and 31451. [Class 69 (ii)] In a hydraulic variable-speed gear of the kind comprising a variable-stroke swashplate pump and a fixed-stroke swashplate motor, and having means for relieving pressure built up in the prevailing return line owing to the motor continuing to run while the swashplate of the pump is being adjusted to no-strike position, the relieving means include a piston valve controlled conjointly with the tilting-box of the pump, and yielding relief both during the period of reduction of tilt and also when the tilting- box is in the no-tilt position. When right-hand tilt is applied, as in Fig. 1, the prevailing suction line communicates through line 7, port 9, annulus 17 and bore 18 both in the valve 11, and line 19 with a make-up valve 4. This connection is operative while the tilting-box is adjusted almost to no-stroke position, and the pressure built up by momentum over-run of the motor passes to the prevailing pressure line through the valve 4. At a certain stage in the reduction of tilt, the prevailing suction line is put in communication through line 7, port 9, annulus 16 in the valve 11, port 13, line 14, port 8 and line 6 with the prevailing pressure line, this connection remaining operative when the tilting-box reaches the no-stroke positive, as shown in Fig. 4, the other connection being then inoperative. The valve 11 is provided with a dash-pot arrangement which prevents stroke being put on too rapidly while allowing it to be taken off rapidly. If the valve is moved to the right, for example, from the central position shown in Fig. 5, the port 22 is over-run and liquid from the right-hand end exhausts through a needle valve 27 ; when the valve is being returned to its central position, liquid flows freely into the right-hand end .through non-return valve 25. The dash-pot spaces are kept charged with liquid through diagonal passage 29 in the piston 11. In a modification, Fig. 6, a valve 32 places the prevailing suction line in free communication with a reservoir ; when in its mid-position the valve connects the pressure and suction lines to each other and to a reservoir, or alternatively another valve associated therewith connects pressure and suction lines together. In a further modification, Fig. 7, a valve 54 is so arranged that the left-hand side of the shuttle valve 51 is subjected to the pressure in the prevailing suction line while the right-hand side thereof is subjected to the pressure in the prevailing pressure line, whereby the valve is normally urged to the left; if build up occurs in the suction line, the valve is moved to the right and uncovers a port 55, whereby the suction line is placed in communication with the reservoir. Alternatively, movement of the shuttle valve may place the pressure and suction lines in communication. In either case, the valve 54 when in its mid-position, places the pressure and suction lines in communication.
Patent GB-884200-A (GB)
Title: Method and apparatus for forming individual wrapped pads from otherwise continuous batt strips
IPC: D21D1/32
Filed: 1959-09-03
Abstract: 884,200. Forming pads with fibrous batt materials. JOA, C. J. Sept. 3, 1959 [Sept. 15, 1958] No. 30073/59. Class 96. In forming individual pads of fibrous batt material using apparatus broadly corresponding to that described in Specifications 884,195, 884,197, 884,198 and 884,199, the batt strip 2 from a conveyer 1 is divided by a reciprocating suction hood &c. 3 into e.g. circular, oval, or hexagonal pads 7 which are entered between facing-sheets 5 and 6, one or both of which is adhesive-coated, and the assembly is pressed together between travelling bands 46, 47 ; and the individual pads are severed, leaving e.g. an undulating-edged margin 9, along which the facing- sheets are sealed together, the unused facing-sheet material being drawn off downwardly by rollers 77, 78 and returned for repulping. The cutting and sealing appliance 8 has a reciprocating movement similar to that of the batt-divider 3. Specification 884,194 also is referred to.
Patent GB-228820-A (GB)
Title: Improvements in or relating to gear-changing mechanism for variable speed-gears for cycles
IPC: B62M11/14
Filed: 1923-12-14
Abstract: 228,820. Solomon, M. Dec. 14, 1923. Controlling variable-speed gearing contained within the hub of the rear wheel of a foot-propelled cycle and operated by a sleeve, which is turned around the wheel axle. Means are provided for substantially nullifying the effect upon this gearchanging mechanism of moving the axle 1 in the forks 3 to tension the chain. The sleeve is controlled through a lever 7 by a cable 8, which is led over a jockey pulley 9 supported upon a frame stay 11. An equivalent arrangement of two rods connected by a short lever pivoted to the stay is described.
Patent GB-488643-A (GB)
Title: A composition for the treatment and preservation of flexible transmission belts, ropes and the like
IPC: C09G1/10
Filed: 1936-11-06
Abstract: A composition for the preservation and treatment of flexible transmission belts, ropes, &c. consists of an emulsion of 6 parts of tallow and 1 part of a wax such as beeswax or other ester of cerotic acid with 30 parts of water using 3 parts of soap as the emulsifying agent.  The water is boiled, and the mixture is agitated until emulsification is complete, and it is then diluted with water until the emulsion has a density of about 0,950.  The product is nonslipping in character, and should be applied over the whole surface of a belt &c. at least one hour before use. Specifications 19539/92, [Class 17], 461,715; and 473,506, [Group VI], are referred to.
Patent GB-951225-A (GB)
Title: Improvements in or relating to means for stacking flat articles
IPC: B65H31/06
Filed: 1961-08-22
Abstract: 951,225. Stacking flat articles. TELEFUNKEN PATENTVERWALTUNGS G.m.b.H. Aug. 22, 1961 [Aug. 27, 1960], No. 30239/61. Heading B6H. In a device for stacking flat articles 3 such as postal mail the leading edges of the articles are caused to bear against a surface 2, Fig. 2, in a direction substantially perpendicular to the surface by a rotatable stacking member 9 provided with resilient radially extending vanes 10, the yieldability of the vanes in the direction parallel to the axis of the member 9 being limited. Articles 3 are fed individually in a vertical condition over the surface of a conveyer 4 which moves slowly in the direction of the surface 2 by a belt 5 driven by a roller 6 until they abut against the surface 2, a friction roller 7 mounted on the shaft of the roller 6 helping in the feeding movement. If the articles 3 are light in weight e.g. postcards, there is a danger that some of them will be prevented from reaching the surface 2 by the articles already stacked and that they will become obliquely positioned in the stack with their rear edges raised. In order to avoid this the member 9 is mounted on the shaft of the roller 6 so that the vanes 10 engage the lower regions of the articles as they rotate and ensure that the articles move uniformly against the surface 2. The vanes 10 are formed of a material having a high coefficient of friction e.g. polyvinyl chloride, polyurethane or a fibre, and in Fig. 1 are restrained against bending upwards and downwards by discs 11 secured to the member 9, the radius of which discs is smaller than the length of the vanes. The vanes are of such a length that they can engage an article 3 even when it is inclined to the vertical as shown at 12. The vanes may point downwards as shown in Fig. 3, a member 14 being provided to prevent upward bending of the vanes, and may be of circular, square or other rectangular cross section. In the latter case the long side of the rectangle is arranged so as to be parallel to the axis of the member 9 in order to restrict bending of the vanes in this direction. The vanes may be in the form of U- shaped members of which one leg is longer than the other. In a modification, instead of being fed horizontally as in Figs. 1, 2, the articles are fed vertically downwards. In the embodiment of Fig. 10 (which is a plan view) 27 is a friction wheel engaging the upper edge of the articles 30 to be stacked, 25 is a stacking member corresponding to the member 9 and 26 is a spring- biased braking strip, pivoted at 28 and engaging the upper edges of the articles 30.
Patent GB-822625-A (GB)
Title: Attachment for field chaff-cutters for mowing long-stemmed crops, particularly maize
IPC: A01D43/08
Filed: 1956-10-04
Abstract: 822,625. Reaping machines. MASCHINENFABRIK FAHR A. G. Oct. 4, 1956 [Oct. 5, 1955], No. 30262/56. Class 6(3). A mowing machine comprises a frame 2 which is attached to a wheeled chaff cutter 1 and carries an endless band-conveyer 5 the upper shaft 3 of which is driven by the chaff-cutter and the lower shaft 6 of which drives the remaining moving parts of the mower. The shaft 6 drives a parallel transverse shaft 8 through a belt 7. The shaft 8 drives a crank 13 reciprocating the knife bar 14 through bevel gears 12 and drives vertical shafts 17, 18 which carry sprockets 19, 20 for endless chains 23, 32. The chains 23, 32 carry crop-engaging fingers 23a, 32a and are mounted on pulleys 29, 30 carried by lateral crop-dividers 2<SP>1</SP>, 2<SP>11</SP>, which are transversely-adjustable.
Patent GB-1520412-A (GB)
Title: Gas turbine engine fuel control systems
IPC: F02C9/32
Filed: 1974-07-09
Abstract: 1520412 Automatic control of gas turbines LUCAS INDUSTRIES Ltd 2 July 1975 [9 July 1974] 30311/74 Heading G3N A control circuit for the fuel supply of a gas turbine engine includes an integrator for producing a demand signal to the engine governor and a  limiter circuit which is responsive to the magnitude of the difference between an actual and demanded  value of an engine parameter to decrease the input to the integrator and furthermore to make the input negative when the magnitude of the difference exceeds a predetermined value. In the embodiment described the actual and demanded values are speed and the limiting circuit operates to reduce the acceleration rate of the engine. As shown in Fig. 1 both the speed governor 14 of engine 16 and difference amplifier 15 are provided with a datum speed signal from integrator 12 and an actual speed signal direct from the engine. The output of difference amplifier 15 is used in limiter circuit 11 to provide deceleration limit signals from function generator F1 and acceleration limit signals from function generator F2. The relationships between acceleration rate and speed error (output of amplifier 15) is shown in Fig. 2 and at larger speed errors the input to integrator 12 becomes negative so that the speed datum signal to governor 14 is reduced until the speed error reduces to a level when the positive part of the characteristic can be followed. The function generator F2, Fig. 3 (not shown) consists of two operational amplifiers each having feedback resistors which define the different slopes of the required characteristic and a voltage comparator providing the sharp cut-off at zero error signal all connected through diodes to the output (diode 18).
Patent GB-333100-A (GB)
Title: Improved counter or token for actuating automatic sale apparatus
IPC: G07F1/06
Filed: 1929-10-07
Abstract: 333,100. Siemens - Schuckertwerke Akt.-Ges. March 12, 1929, [Convention date]. Tokens of special form.-A token in the form of a polygon is provided with a slot S. The diameter a is smaller than the diameter of the most usual change coins normally used for the apparatus'.
Patent GB-207835-A (GB)
IPC: D06N3/12
Filed: 1923-12-04
Abstract: 207,835. Rautenstrauch, W., and Trenzen, C. Dec. 4, 1922, [Convention date]. Proofing. - Fabrics are impregnated with a solution of albumen in the hydrate of an alkalineearth metal obtained by treating hides (e.g. the offal from leather manufacture) with the alkali. They are then tanned, the albumen being deposited on the fibres of the fabrics; or the deposition may be effected before the tanning operation.
Patent GB-936130-A (GB)
Title: Improvements in or relating to calculating instruments
Inventor: BIRD MICHAEL
IPC: G06G1/12
Filed: 1961-08-24
Abstract: 936,130. Calculating apparatus. TELEVISION AUDIENCE MEASUREMENT Ltd. Aug. 3, 1962 [Aug. 24, 1961], No. 30542/61. Class 106 (1). A slide rule computes the cost of a television advertisement per thousand viewers. The scales A to D are logarithmically calibrated: scale A in thousands of potential viewers, scale B in pounds cost of the advertisement, scale C in the percentage of the potential audience actually viewing and scale D in shillings cost per thousand viewers. In use scale B is set against scale A and scale C read off from scale D. The calculator may be in disc form.
Patent GB-1416588-A (GB)
Title: Tape cassettes
IPC: G11B15/665
Filed: 1973-06-27
Abstract: 1416588 Cassette and cassette machine SONY CORP 27 June 1973 [29 June 1972] 30549/73 Heading G5R In a twin reel tape cassette T from which a loop of tape 11 is withdrawn via an opening 10 for, e.g. helical scanning by a rotary magnetic head, the opening is provided with a lid 12 which is formed with cut out portions 30a, 30b through which cassette position registering parts 26a, 26b of the bottom wall of the cassette extend. In the cassette the lid 12 is spring biased to the closed position in which it is locked by latch arrangement 17 and the tape reels are spring biased towards the bottom wall which includes friction material to retain the reels when not in use. Guide slots 36, 36a, 36c provided on the side walls, or raised guides on the top wall, Fig. 13B (not shown), assist in guiding the cassette into a playback machine when it is loaded with the side containing the tape opening leading. Alternatively guides extending in the long dimension of the cassette are provided, Fig. 13A (not shown), when the cassette is loaded in the direction of its length. The cassette T is entered into the playback machine until the parts 26a, 26b on the cassette bottom wall engage parts 70a, 70b on the base 53 of the cassette holder 50. At this time a part 71 also mounted on the base 53 has entered opening 31 in the lid of the cassette to release the lid latching arrangement and as the cassette and holder are then swung downwardly towards the cassette operating position a further part 73 engages an edge of the lid to move it to its open position. The downward swinging movement of the holder is controlled by pivoting arms 60, 61 and is opposed by spring 62. In the operating position the holder is latched by a part 64 thereon engaging a spring loaded member 63 pivoted to the machine base and the cassette is supported on two pillars which enter the apertures 44, 45 and a further pillar which engages the bottom wall surface. As the drive spindles 40a, 40b enter the cassette reel hubs the reels arc lifted out of braking engagement with the friction material on the bottom wall of the cassette.
Patent GB-736329-A (GB)
Title: Improvements relating to radio navigation systems
Inventor: PALMER WINSLOW
IPC: G01S1/24
Filed: 1952-12-02
Abstract: 736,329. Radio - navigation. SPERRY CORPORATION. Dec. 2, 1952, No. 30598/52. Class 40 (7). A radio-navigation system, e.g. a precision Loran system, comprising two transmitting stations and receiving equipment provided with means for obtaining fine indications of the distance difference from the two stations from measurements of the relative phases of radio frequency components of signals from the two stations, and for obtaining coarse indications of the distance difference from measurements of the relative phase of the modulation frequency components, is characterized in that means are provided at each station for transmitting further radio frequency signals to enable further radiations of the distance difference to be obtained by the receivers, the further indications serving to resolve ambiguities in the fine indications not resolved by the coarse indications. The transmitters may transmit pulses simultaneously on two carrier frequencies f1, f2, for example 180 and 200 Kcs./sec. respectively. Fig. 10 shows a block schematic diagram of a slave transmitter wherein the timer 11<SP>1</SP> determines the pulse repetition rate of the two transmitters 12<SP>1</SP>, 14<SP>1</SP> which feed a common aerial. Received signals are fed through an alternator 23 to R.F. amplifiers 19, 21 for frequencies f1, f2 respectively to a switch 22 so that the master and stave R.F. signals of each frequency may be compared on a cathode-ray tube 17; by switching in a detector 25 the pulse envelopes may be compared. The navigator's receiving equipment comprises two R.F. amplifiers, one for f and the other for f2 frequency, and a receiver, and a cathode-ray tube and time indicator circuits so that the signals of frequency f1 from each transmitter may be compared, and the time interval between them measured, as well on the signals of frequency f2 and the pulse modulation. Fig. 13 shows the display if the signals of frequency f1 are mis-matched by one whole cycle; the signals of frequency f1, Fig. 13 (A), appear to be matched, as do the pulse envelopes, Fig. 13 (C). but the signals of frequency f2 are clearly mis-aligned, Fig. 13 (B). Fig. 14 shows the display if the signals of frequency f1 are mis-matched by ten cycles; the signals of frequency 12, Fig. 14 (B), appears to be matched but the pulse envelopes shown in Fig. 14 (C) are not aligned.
Patent GB-1309774-A (GB)
Title: Olefin polymerization
IPC: C08F110/02
Filed: 1970-06-24
Abstract: 1309774 Olefin polymerization MONTECATINI EDISON SpA 24 June 1970 [24 June 1969] 30620/70 Heading C3P Olefins are polymerized using a catalyst comprising a reaction product of a hydride or organometallic compound of a Group I-III metal with the product obtained by contacting a compound of the formula wherein M is an alkali metal or a quaternary ammonium group NR 4  wherein each R is H or hydrocarbyl, or the nitrogen atom is part of a heterocyclic ring; X is NR<SP>1</SP> 2  wherein each R<SP>1</SP> is H or hydrocarbyl or the R<SP>1</SP> are joined so that the nitrogen is a member of a heterocyclic ring ; or some of the X's are halogen; n is the valency of Ti; p is 0, 1, 2 or 3; and m is 1, 2 or 3; with an anhydrous magnesium halide carrier which is activated (as indicated by its X-ray powder diffraction pattern and/or by having a surface area higher than 3 m<SP>2</SP>/g) either before or during the preparation of the catalyst. In the examples, all of which relate to the polymerization of ethylene using aluminium triisobutyl as the organometallic component of the catalyst, anhydrous magnesium chloride is used as a support for: Ti[N(C 2 H 5 ) 2 ]Cl 3 ; Ti[N(C 2 H 5 ) 2 ] 2 Cl 2 ; Ti[N(C 6 H 5 ) 2 ]Cl 3 ; Ti[N(C 6 H 5 )] 4  ; TiBr 3 [N(C 2 H 5 ) 2 ]; lithium titanium tetracarbazyl; and (the latter two being prepared from TiCl 3 [N(C 2 H 5 ) 2 ] and N(C 2 N 5 ) 4 Cl in varying molecular ratios) and anhydrous magnesium bromide is used as a support for TiBr 3 [N(C 2 H 5 ) 2 ]. The reaction of the Ti compound with the support is carried out with grinding or the support may be activated by grinding prior to this reaction.
Patent GB-1166882-A (GB)
Title: Apparatus for Feeding Fibre Bundles to Fibre Processing Machines
Inventor: BOUCHERIE GERARD BENONI
IPC: A46D3/08
Filed: 1967-07-04
Abstract: 1,166,882. Brush making machines. G. B. BOUCHERIE. 4 July, 1967 [20 Oct., 1966; 30 Dec., 1966], No. 30687/67. Heading A4K. [Also in Divisions B8 and D1] In order to maintain a supply of bristles at a narrow outlet, as required by the operation of a conventional picker 1, without repeatedly having manually to re-fill a bristle magazine, the bristles are conveyed from the base of a magazine 10, of greatly increased capacity, along an, at least partially, curved channel, by feed pins 26-27, (67) or 152. The pins 26-27 are moved through the unrelieved mass of bristles 17, by their rigid connections with endless drive chains 20-21 and are spaced apart, so as to pass on either side of picker 1. A series of single pins (67) or 152 can be operated pneumatically or hydraulically so that no pin fouls the picker 1. The extent to which pins 152 project from continuously rotating disc 148 is determined by the engagement of follower rolls 154 with stationary edge cams 159, 161. An instantaneous radial retraction of each pin is effected, by the operation of a pneumatic ram 167, which is initiated by roller pivot 155 tripping a valve. Disc 148 is driven at constant torque by means of a friction clutch. As a pin 152 leaves the magazine, its pivot 155 operates pneumatic ram 139, to retract cut-off blades 133, 135, and allow the bristles 17 to drop on to the edge of disc 148. The next pin 152 then has time to re-actuate ram 139, to return the apparatus to the position shown, before entering the magazine. Pneumatic ram 145 is also actuated, to lift the blade 135 and provide a space for the passage of the tip of the pin 152 between the edges of blades 133. In a modification (Fig. 10, not shown), adjacent delivery channels have flexible end portions, so that the outlet of either can be brought into the range of movement of a single picker 1.
Patent GB-810243-A (GB)
Title: Improvements in, or relating to, guards for derailleur gears
Inventor: PARKES FREDERICK CHARLES
IPC: B62M9/128
Filed: 1956-10-09
Abstract: 810,243. Gear guards for cycles. SUN CYCLE & FITTINGS CO. Ltd. Oct. 9, 1957 [Oct. 9, 1956], No. 30695/56. Class 136(1) Means for protecting the chain-shifting mechanism of a Derailleur change speed gear, comprise a rigid guard 11 which is adapted to be fixed by one end upon the spindle of the rear road wheel of a bicycle and, when so fixed, to pass over the supporting arm 6 of the chain-shifting sprocket 10 of the gear so that a portion of the guard is disposed on the opposite side of the arm 6 to the road-wheel. The guard is cranked and comprises a shorter end portion 11a which is adapted to be fixed upon the rear wheel spindle, and is spaced from but is parallel to a longer and opposite end portion 11b and is united to the latter by a crank 11c. A triangular web 11d is provided on the guard. The short end portion 11a of the guard is secured by a bolt 13 to a track nut 12 which is adapted to clamp the spindle in a supporting fork of the bicycle frame.
Patent GB-1035678-A (GB)
Title: Method and apparatus for electrostatically coating surfaces
IPC: B05B5/025
Filed: 1963-08-02
Abstract: In a method of electrostatically coating a surface with particles of a material, the particles are electrically charged and precipitated electrically on to the surface of the article to be coated in the presence of a fluid having a resistivity lower than that of the particles whereby said fluid facilitates the progressive evacuation of the charges on said particles from the coating fromed on the article.  In this way it is possible to build up a thick coating without creating a counter-field tending to repel further particles. The fluid may be water and may be sprayed simultaneously with the coating material, in which case it may be charged to the same potential as the coating material, or it may be treated in a vessel beneath the article being coated so that the article is surrounded by ascending vapour.
Patent GB-318784-A (GB)
Title: Warp-reed for weaving looms
IPC: D03D49/62
Filed: 1928-10-24
Abstract: 318,784. Hauser, K. Oct. 24, 1928 Reeds -A warp reed is angular in plan the rods 11 being placed in vertical grooves 10 in transverse bars 2 of the frame rotatably secured by covering bars 13, longitudinal rods 11 being held between the upper and lower bars 2 and 13 against which the ends of the rods 11 abut. The ends of the reed frame are secured by angle brackets 8 to a transverse bar 7.