baber/WOPTO huggingface dataset:
Patent GB-569945-A (GB)
Title: Circuit breaker and overload protective device
IPC: H01H77/04
Filed: 1943-08-20
Abstract: 569,945. Electromagnetic switches: thermal switches. STILLWELL, W. E. Aug. 20, 1943, No. 13591. [Class 38 (v)] A remote-control circuit-breaker responsive also to overload has an armature 34 operated by one or two electromagnetic coils 30, 31 and mounted on a shaft 37 controlled by a snapspring 40, a second co-axial shaft 36 carrying a second snap-spring 50, which in turn carries a movable contact member 51 adapted to bridge two contacts 28 mounted on bimetal strips 26 in the load circuit. In the form shown the snapsprings 40, 50 both have two positions of equilibrium, and the contact ring 51 may be brought into and out of engagement with contacts 28 by energizing coil 30 or coil 31 respectively. With the circuit-breaker in the " on position, overload heats the bimetal strips 26 and snaps the spring 50 downwards so that circuit is broken, even though the armature 34 is still in its upper position. To reclose the circuit, the " off coil 31 must first be energized, when snap-spring 50 will be forced into its original position. Then the " on coil is energized. In a modification, Fig. 10 (not shown) the armature is controlled by one coil only, the snap-spring 40 in this case having only one position of equilibrium and returning to it when the coil is de-energized. The bimetal strips 26 are mounted in a cap 25 so that response to different overloads may be effected by substituting caps with strips 26 of different capacities.
Patent GB-856817-A (GB)
Title: Sealed waveguide window
IPC: H01P1/08
Filed: 1957-04-30
Abstract: 856,817. Waveguide seals. VARIAN ASSOCIATES. April 30, 1957 [June 13, 1956], No. 13775/57. Class 40(8). A gas-tight waveguide window is positioned at a distance from an abrupt discontinuity between two waveguides such that it provides a broad-band impedance match between the guides. In one embodiment (Figs. 1, 2, not shown) two rectangular waveguides of equal characteristic impedance are joined by a circular waveguide of higher characteristic impedance. The circular section guide is one half wavelength long and is provided with a quartz or alumina window half-way along its length. The thickness of the window and its distance from the rectangular guides are such as to cancel out the mismatch due to discontinuities. In a modification, the circular guide section is provided by a flexible copper member 8 within which the window 11 is sealed. The member 8 is hermatically sealed between the flanges of rectangular waveguides 5, 12. With the flange 6 it forms a half-wavelength choke composed of two quarter-wavelength sections of different impedances.
Patent GB-967670-A (GB)
Title: Improvements relating to adhesive strength testing machines
Inventor: BLICK FRANK
IPC: G01N19/04
Filed: 1961-04-17
Abstract: 967,670. Testing adhesion. SONDES PLACE RESEARCH LABORATORIES Ltd. May 14,1962 [April 17, 1961], No. 13776/61. Heading G1S. Apparatus for testing adhesion by measuring the force required to strip adhesive tape from a plate at a constant predetermined speed comprises a hollow slotted pillar 2 guiding a weighted body 3 suspended by a cable 5 within the pillar, the weight 3 being manually raised to an initial position by drum 8 (Fig. 2) and handle 11 and then allowed to fall under gravity, but at a constant speed controlled by a motor 14. The tape is stuck to a plate that can be releasably secured to the weight 3 the lower end of the tape being doubled back on itself and fastened to a nail 33 in bracket 34 fixed to the operating member 27 of a dial gauge 26; the upper end of the member 27 is fixed to a leaf spring 28 (Fig. 3) fast with the housing 7. Thus as the weight 3 falls, the tape is stripped upwardly from it, the deflection of leaf-spring 28 being a measure of the force and indicated in force units on the dial gauge. During the fall of weight 3 a notched drum 17 rotates (nearly) once operating the arm 19 of a microswitch 20 at inch increments of the fall to operate a warning light for the operator to take a reading of the force. The travel of weight 3 is limited by an escapement 23 co-operating with a pin 22. A one-way clutch prevents slip against the controlling motor 14 during fall of the weight 3, but allows manual raising of the weight.
Patent GB-1236713-A (GB)
Title: Improvements in or relating to switching circuits
Inventor: COLTON JOHN ROBERT
IPC: H03C1/00
Filed: 1969-03-17
Abstract: 1,236,713. D/A converters. WESTERN ELECTRIC CO. Inc. 17 March, 1969 20 March, 1968], No. 13784/69. Heading G4H. [Also in Divisions H3-H5] A switching circuit, Fig. 1, comprises an amplifier 12 having a negative feedback path which includes a switch 13 which shunts an element R2 in the feedback path. It is shown that, with an input signal applied to a phase inverting input and to a non-phase inverting input via network R1, R3, R4, the gain of the amplifier in + ¢ or - depending on whether switch 13 is closed or open. In a modification Fig. 2 (not shown), the resistor R3 is omitted and a further feedback path (R6, R7) is included. In a ditital/analogue converter, Fig. 3, a number of switching circuits 35-1, 35-2... 36-n of the type referred to above, have their switch inputs A connected to a data source 30 which presents individual digits simultaneously on lines 31-1, 31-2 ... 31-n, and a reference voltage source 32 is connected to all the amplifier inputs B. According to whether the inputs A of switches 35 are "1" or "0" the outputs C will be positive or negative and each is connected through an appropriate weighting resistor 36-1, 36-2 ... 36-n to a summer 37. Alternatively, the resistors 36 may all have the same value, and weighting may be performed in the switching circuits 35. The switching circuits may also be employed as modulators, demodulators and full wave rectifiers (see Divisions H3-H5).
Patent GB-115411-A (GB)
IPC: F02M19/03
Filed: 1917-09-25
Abstract: 115,411. Piat, J. May 2, 1917, [Convention date]. Spray carburettors.-A fuel nozzle comprises an inner fixed tube a and an outer rotatable tube b, the upper closed ends a<2>, b<2> of the tubes being provided with similar parallel-sided arc-shaped slots so that the extent of opening of the fuel orifice is directly proportional to the movement of the outer tube. This tube is provided with an arm d working in a slot c in the base of the nozzle body and actuated by the driver through a Bowden wire f. The arm is returned by a coiled spring g, and its backward movement is limited by an adjustable cam stop. One or more fuel slots may be employed.
Patent GB-244997-A (GB)
Title: Improvements in or relating to vehicle wheels
IPC: B60B3/16
Filed: 1925-05-26
Abstract: 244,997. Budd Wheel Co., (Assignees of Higginbotham, P. R.). March 27, 1925, [Convention date]. Detaching from, and attaching to, permanent hubs.-Relates to detachable wheel attachments of the kind comprising transverse bolts carried by a radial flange on the permanent hub, and consists in permanently anchoring the bolts in the flange against longitudinal and rotary movement bv means integral with the bolts and coacting directly with the hub flange. The bolts 10 are held in the hub flange 12 by the head 15 and the upset part 20, and rotation is prevented by a flat on the head engaging an annular shoulder 19 on the rear face of the flange.
Patent GB-943583-A (GB)
Title: Transportable hopper for receiving concrete mix and the like
IPC: B65D90/12
Filed: 1962-04-10
Abstract: 943,583. Bottom discharge vehicles. R. H. LENNQVIST. April 10, 1962 [April 14, 1961], No. 13873/62. Heading B7B. A hopper for concrete &c. has vertical side walls 1, 2 merging with discharge throats 4, 5, 6 and 7 having walls inclined at least 60 degrees to the horizontal and closed by pivoted gates 9 which may be opened by swinging in opposite directions. The leg 17 may be swung upwardly to act as a tow-bar when detachable wheels 15 are fitted.
Patent GB-693330-A (GB)
Title: Improvements relating to steam generating plants and methods of operating them
IPC: F22B29/08
Filed: 1951-06-12
Abstract: 693,330. Distributing feedwater in steam boilers. SULZER FRERES SOC. ANON. June 12, 1951 [July 12, 1950], No. 13919/51. Class 123 (ii) In a steam boiler comprising a feed pump 1, economiser 2, main vaporizer 3, separator 4 and superheater 17, 18, at least a part of the water from the separator 4 is forced through a secondary vaporizer 8 to a secondary separator 10 from which steam is directed through a pipe 13 to the steam outlet pipe 7 of the separator 4 and water is blown down at 12. The pipe 13 may be connected to the superheater 17, 18 between the sections thereof or, alternatively, direct to the pipe 7 between the said superheater and' a throttle. The quantities of water discharged from the two separators 4, 10 are regulated by valves 14, 12 respectively controlled by impulse transmitters 15, 16 in dependence on the water level in said separators. The transmitter 15 also controls a valve 20 in a by-pass pipe 19 between the pump 1, or pipe 7, and the vaporizer 8 to permit water, or steam, to flow to the latter when the water discharge from the separator 4 falls unduly.
Patent GB-1056163-A (GB)
Title: 17-a-trifluoropropynyl steroids and process for the preparation thereof
Inventor: FEATHER PETER
IPC: A61K31/567
Filed: 1964-04-03
Abstract: The invention comprises steroids of the structure <FORM:1056163/C2/1> (wherein R is C1- 5 alkyl) which may optionally contain further substituents in rings A, B, C and D and further unsaturated linkages in rings B, C and D; and their preparation by reaction of the corresponding 17-keto steroids with metal derivatives (including Grignard reagents) of 3,3,3-trifluoroprop-1-yne to give the 17b -ols, and if desired reaction of these with alkyl halides and sodamide in liquid ammonia to give the 17b -alkoxy derivatives. Examples are given.  The 17a -trifluoropropynyl steroids of the invention which are stated variously to have claudogenic, oestrogenic, progestational, ovulation inhibiting and gonadotrophin inhibiting properties, may be made up into pharmaceutical compositions.  Pills and tablets for use as oral contraceptives are described.
Patent GB-640926-A (GB)
Title: Magneto
IPC: H02K21/12
Filed: 1947-05-23
Abstract: 640,926. Ignition magnetos. BENDIX AVIATION CORPORATION. May 23, 1947, No. 13951. Convention date, May 23, 1946. [Class 35] In a rotary magnet ignition magneto the coils 10 are mounted on cones 54 bridging the ends of pairs of stator pole shoes as 13, 131, the core being secured in position by the leaf springs 57 curled at their ends 58, 59 so as to engage suitable notches 55, 56 in the core and the stator shoes respectively. As shown in Fig. 2, the magneto frame 15 is supported on the driving machine frame 60 by means of a spigot portion having a flat top 62 and a peripheral groove 64 and which fits into a recess 64 in the magneto frame. The magneto is secured in position by adjustable spring clamps 68 having arms 69 which partly embrace the groove and are secured by screws 66 which pass through slots in the clamps to allow withdrawal from the groove. The construction described is almost identical with that of Specification 640,925. Specification 514,174 also is referred to.
Patent GB-794265-A (GB)
Title: Improvements relating to connections for operating rotary valves or cocks
Inventor: WAINWRIGHT HERBERT GEOFFREY
IPC: F16D3/16
Filed: 1955-05-16
Abstract: 794,265. Valves. BROWN (BROWNALL), Ltd., D. Feb. 20, 1956 [May 16, 1955], No. 14032/55. Class 135. [Also in Group XXIV] A connection for operating a rotary valve comprises a rod a having a handle at one end and a boss f with two projecting arms g, g<SP>1</SP> parallel with the rod, the boss being secured on the rod at one or other of different points e at or towards its other end, one arm g<SP>1</SP> being cylindrical and the other g having a turned up end i with a transverse slot j behind it, and the valve spindle d<SP>1</SP> having a crosshead k with diametrical slots m, are adapted to pass through the transverse slot j and the other over the cylindrical arm. The boss is detached from the rod and manipulated over the crosshead after which the boss is replaced on the rod and a split-pin h passed through the boss and a rod hole e. The connection provides for angular movement between the rod and spindle as well as positive turning of the latter.
Patent GB-893084-A (GB)
Title: Improvements in or relating to polymeric compositions
Inventor: SMITH ROBERT ROY
IPC: C08F291/02
Filed: 1957-05-02
Abstract: Transparent, rubber-containing polymeric compositions are obtained by polymerizing a mixture of ethylenically unsaturated monomers, e.g. styrene or derivatives thereof, methyl, or N-butyl methacrylate, acrylonitrile and vinyl chloride or acetate, in the presence of natural or synthetic rubber, the monomer mixture being chosen so that a copolymer obtained from the monomers independently of the rubber has a refractive index within 0,02, preferably 0,015, of that of the rubber used.  The rubbers exemplified are butadiene-styrene (75-25%), polychloroprene, polybutadiene, and natural rubber, a polymer of any of the monomers, and a styrene-isobutylene copolymer being excluded. The rubber in finely divided form may be dissolved in the monomer mixture, or in a mutual solvent, or used in the form of a dispersion, and is preferably present in a proportion of from 5 to 35% by weight of the final product, and in the case of styrene and methyl methacrylate preferably in a proportion of 6:1.  Examples describe the polymerization (1) of a 1:1, 2:1 or 3:2 mixture of styrene-methyl methacrylate with 6% of butadiene-styrene rubber copolymer with a prepolymerization heating stage followed by a multi-stage heat polymerization using a t-butyl perbenzoate catalyst.  (4) methyl methacrylate and styrene with 6% polychloroprene using a mixed azo-bis-isobutyronitrile, lauroyl peroxide, and t-butyl perbenzoate catalyst with an organo-tin stabilizer.  (5) styrene and acrylonitrile with a 6% butadiene-styrene rubber using a lauroyl peroxide and t-butyl perbenzoate catalyst with an organo-tin stabilizer, (6) methyl methacrylate and styrene with natural rubber using a mixed catalyst as in (4), (7) vinyl toluene and N-butyl methacrylate with butadiene-styrene rubber and (8) vinyl chloride and acetate with a polybutadiene latex.
Patent GB-271886-A (GB)
Title: Improvements in regulating devices for clockwork-operated fuses for projectiles
IPC: F42C9/04
Filed: 1927-05-25
Abstract: 271,886. Varaud, A., and Schwob FrÞres et Cie., Soc. Anon. May 28, 1926, [Convention date]. Projectile fuzes.-A clockwork fuze comprises a coiled balance spring 19 co-axial with the axis of the projectile in combination with a dead-beat escapement 12, 11, the wheel 11 of which is arranged on an axis at right-angles to the axis of the balance spring. This wheel has two sets of teeth co-operating with the pallet 12 which is attached to the spindle 13 of the balance spring. This spring is of square section and is attached at one end to a collar 20 on the spindle 13 and at the other end to a ring 22 which is adjustable rotatably and is clamped in adjusted position by set-screws a. Another ring 27 provided with an eyelet stud 28 through which the last coil of the spring 19 passes, is also rotatably adjustable to regulate the effective length of the spring. The ring 27 is held friction tight between a washer 30 and a top plate 23 fastened by screws 24; and the periphery of the ring is formed with teeth adapted to be engaged by a detachable key, which may be introduced through a hole in the top plate 23 to perform the regulation of the spring. The escapement wheel 11 is driven by a train of bevel gear 7 and spur gear 4, 5 from a crown wheel 3 on the spindle 2 of the main spring 1 of the clockwork.
Patent GB-998483-A (GB)
Title: Flash butt resistance welding machines
IPC: B23K11/04
Filed: 1962-04-12
Abstract: 998,483. Welding by pressure. H. A. SCHLATTER A.G. April 12, 1962 [April 14, 1961], No. 14177/62. Heading B3R. [Also in Division H2] In a resistance flash-butt welding machine an inductance is provided for preventing any sudden increase in current during the flashing stage, said inductance being capable of being switched in or out, by a control means, independently of the welding current. A transformer 2 has a primary winding 1 in series with which is an inductor 4 which can be placed in or out of circuit by two switches 3, 5 controlled by a controller 6, which also controls valves 16 for supplying pressure fluid to a doubleacting piston and cylinder 13, 14 which in turn actuates a slide on which is carried one of the two workpieces 10, 12. The pistion 13 is mechanically connected to a contactor device 15 which is in turn electrically connected to the controller 6. The inductor 4 is variable, thus enabling it to cope with various materials and sections. In operation, the controller 6 closes the switch 3 and opens switch 5 and simultaneously initiates the feed mechanism. Thus during the flashing stage the inductor 4 is in circuit and prevents any sudden rise in flashing current. After a predetermined travel of the piston 13, the contactor 15 causes the controller 6 to short circuit the inductor 4 by closing the switch 5 and simultaneously causes valves 16 to commence the upsetting stage; upsetting and welding are completed in the usual manner. In a modification (Fig. 2, not shown), a different inductor switching arrangement is shown in which the inductor is open-circuited instead of being short-circuited. Alternatively, both embodiments may use electronic switching devices such as ignitron contacts in place of the switches.
Patent GB-844839-A (GB)
Title: Improvements in or relating to ball joints
Inventor: BINDING JOHN EDWARD
IPC: F16C11/08
Filed: 1957-05-02
Abstract: 844,839. Ball-and-socket joints. ENGINEERING PRODUCTIONS (CLEVEDON) Ltd. May 2, 1957, No. 14365/59. Divided out of 13560/56. Class 65(2) The ball is disposed in a part spherical bearing 14 formed in the joint housing 13 and comprises a metallic core 12 integral with the ball pin and one piece outer facing 15 os synthetic resinouf material which is substantially spherical externally. The material may be a polyamide or polyfluoroethylene resin and may be impregnated with lubricant.
Patent GB-1184352-A (GB)
Title: Cell Identification and Selection System for Centrifuge Apparatus
IPC: B04B13/00
Filed: 1967-03-30
Abstract: 1,184,352. Photo-electric analysis of samples in centrifuge. BECKMAN INSTRUMENTS, Inc. March 30, 1967 [April 12, 1966], No. 14444/67. Heading G1A. In the use of a centrifuge having a plurality of cells containing liquid samples the optical densities of selected ones of which are to be measured photo-electrically, a further photo-electric system is provided to view the coded collar of the centrifuge rotor in order to provide identification signals for the cells. This cell identification system is used in association with a modified version of the time delay discrimination, logic and gating circuit of (Fig. 9) of Specification 1, 116, 782. Cell Identification The collar of the centrifuge carries a pattern of six dark and six light areas, Fig. 11 (not shown), one light area for each cell. This is illuminated by two light sources (176, Fig. 15 not shown). The outputs of a pair of photo-sensors are fed to a counter comprising three flip-flops in cascade. The counter counts from one to six, being reset when a broadened light area on the collar, identifying the presence of cell 1 in the measurement light path, bridges both photo-sensors (usually each photo-sensor sees only one area at a time). The output of the counter 168 is sent on six lines 202-207 to cell selectors 193, 194 as a binarycoded signal identifying the particular cell in the measurement light path. Selectors 193, 194 are set to the two cell numbers to be compared if two single cells are to be compared. Alternatively, if a double-sector cell is to be monitored this is set into selector 193 only. The cell selectors are connected to AND-gates 228, 229 which are connected by additional input lines 221, 222 to AND- gates (120, 125) of the time delay and gating circuit of (Fig. 9). Also the AND-gates 228, 229 feed an OR-gate 231 to enable the trigger (116 of Fig.9). In operation, when two single cells are to be compared, sequential outputs from selectors 193, 194, representing presence of respective cells in the measuring light path, are gated to the AND-gates (120, 125 and 224 of Fig. 9) to cause holding circuits (107) to be sequentially enabled to receive and store the absorption measurement signals from the two cells under consideration allowing subsequent comparison by a differential amplifier. When only one double-sector cell is to be monitored, the AND-gate (224 of Fig. 9) is enabled only once per cycle and operation thereafter proceeds as described in Specification 1,116,782.
Patent GB-473705-A (GB)
Title: Self closing door-hinge
IPC: E05F1/06
Filed: 1936-07-10
Abstract: 473,705. Rising hinges. BREWER, G. July 10, 1936, No. 14455. [Class 65 (ii)] A rising hinge for doors, shown in the open position, comprises a pin 1 fixed by pegs 2 in eyes on one leaf 4 and carrying an antifriction roller 5 which engages in a helical track 7 in the barrel of the other leaf 10. The upper end of the track 7 is formed with a depression in whch the roller 5 rests to hold the door open. A spring 12 surrounding the hinge pin 1 is compressed during opening of the door to assist the closing movement. The barrel of the leaf 10 is provided with a steel bearing ring or ball bearing 11.
Patent GB-612161-A (GB)
Title: Improvements in or relating to radio communication systems
IPC: H04B7/08
Filed: 1946-05-13
Abstract: 612,161. Radio receiving systems. HUSHES, D. H., and PYE, Ltd. May 13, 1946, No. 14462. [Class 40 (v)] In a diversity reception system, the output fed by each receiver to the common reproducer is varied inversely with the noise content of the signal at that receiver relative to the average noise level in all receivers. Two channels A and B are shown, corresponding components in B being indicated by the same numerals suffixed by a dash. A part of the output of an A.F. stage 1 is fed through a low-pass network 13 to an A.F. amplifier 14. Another part is fed through a high-pass filter 2 which transmits only the noise components of frequencies higher .than the required intelligence band to an amplifier 3 connected to a transformer 4, the two secondaries 5, 6 of which are connected to diodes 7, 8 having load resistors 9, 10 respectively. The ratio between the D.C. voltages tapped from the load resistors 9, 10 is adjusted to correspond approximately to the number of channels in the system, and the voltages are combined in such a'way that the bias voltage applied to valve 14 through the decoupling network 17 is equal to the difference between the voltage contributed by both channels across parts of resistors 10, 101, in series, and the voltage across resistor 9. Since these voltages are proportional to noise levels, the bias voltage of valve 14 varies according to the difference between the average noise in the two receivers and the noise in receiver A. Voltage limiter 20 prevents the grid of valve 14 from going too far positive. the outputs of both channels are mixed in 18 and fed to a common output L.