baber/WOPTO huggingface dataset:
Patent GB-631749-A (GB)
Title: Improvements in and relating to safety razor holder
IPC: B26B21/40
Filed: 1947-02-18
Abstract: 631,749. Shaving appliances. PRATT, E. R. Feb. 18, 1947, No. 4641. [Classes 52 (v) and 131] A holder for a safety razor comprises a base portion 11, having two compartments 13, 14 one of the compartments having a central cut-out portion 21 on the front and bottom sides, a back portion 10 extending above the base portion and a cover 15, for the compartments, hinged to the back. The cover, with lubricating members 17, is raised for the insertion of a safety razor in the compartment 14 and has a depending portion 20 engaging the opening 21. Reserve blades are inserted in the compartment 13 through the aperture 30.
Patent GB-476321-A (GB)
Title: Improvements relating to micrometers
IPC: H01B17/14
Filed: 1936-02-15
Abstract: 476,321. Linear - dimension gauges. KOHLEUND EISENFORSCHUNG GES. Feb. 15, 1936, No. 4662. Void. Convention date, March 14, 1935. [Class 106 (ii)] In micrometer apparatus for measuring alterations in the length of test pieces, especially the Martens mirror apparatus, the clamps for the measuring springs are arranged at the points of contact of the knife edge of the springs with the bar to avoid errors due to distortion of the springs. In the known apparatus, Fig. 1, for cold tests, the springs a bear against the test bar d by means of knife edges b on the one hand, and by mirror edges c on the other hand. They are held in place by clamping devices at about the middle of the springs P<1>, P<1>. According to the invention the clamping devices, Fig. 2, are arranged to act at line P<1>, P<1> and P<2>, P<2> thus causing no distortion of the springs. In the usual Martens apparatus for tests at raised temperatures two pairs of springs a, e are used of different lengths the elongation being measured between the knife edges of both pairs of springs. At the upper end, the inner pair is provided with rolls f, bearing against the bar, the edges of the mirror c bearing between the springs. Clamps are applied at the lower knife edges of each pair, at about the middle of the inner pair and towards the top of the outer pair. This form according to the invention is clamped at the bottom at points coinciding with the knife edge and at the top coincide with the points of contact between the measuring springs and edges of the mirror, or the axes of the rolls f.
Patent GB-1043571-A (GB)
Title: Organic peroxides
IPC: C08K5/14
Filed: 1964-02-04
Abstract: Novel peroxides have the formula <FORM:1043571/C2/1> wherein R and R1 are hydrogen atoms, or R1 is methyl group and R is a chlorine atom or a phenyl or benzyl group. 2,2-Bis-(tert.-butyl-peroxy) - 3 - chloro-, -3 - phenyl-, and -3-benzyl-propane are made by condensing the appropriate monoketone with tert.-butyl hydroperoxide in the presence of an acid catalyst.  1,1-Bis-(tert.-butyl peroxy)-ethane is made by reacting acetaldehyde with tert.-butyl hydroperoxide in the presence of an acid catalyst, then further reacting the resulting 1-hydroxy-1-tert.-butyl-peroxy-ethane with more tert.-butyl hydroperoxide.ALSO:Compositions comprising olefin polymers or copolymers and a reinforcing filler are vulcanized with a diperoxide selected from 2,2-bis - (tert. - butyl - peroxy) - 3 - chloro -, - 3 -phenyl -, or - 3 - benzyl - propane, or 1,1-bis-(tert.-butyl-peroxy)-ethane.
Patent GB-546723-A (GB)
Title: Optical apparatus for use in making drawings showing the bodily posture and carriage of a subject
IPC: B43L13/18
Filed: 1941-04-09
Abstract: 546,723. Optical apparatus. ROPER, R. E. April 9, 1941, No. 4717. [Class 97 (i)] [Also in Group XV] Apparatus for facilitating the drawing of a record of the posture of a person comprises a light-tight box 1 carrying a lens 3 and a reflector 2 producing an image of the person on a transparent or translucent sheet 5, a hinged frame 6 or other means being provided for holding drawing paper &c. in place. A compartment 9 may house a black cloth 11 during transport, and may have a sliding cover 10 which may be held vertically in a grooved bar 15, when the apparatus is in use, to support the front of the cloth when it is draped over the head of the user; the top 8 of the compartment 9 may form a hand rest. The lens may be focusable, the position of the mirror may be adjustable, the sheet 5 may be clear or ground glass, and a removable lid 7 may be provided.
Patent GB-649821-A (GB)
Title: Snap action electric switch
IPC: H01H5/06
Filed: 1948-02-18
Abstract: 649,821. Snap-action switches. GUARDIAN ELECTRIC MANUFACTURING CO. Feb. 18, 1948, No. 4838. Convention date, Dec. 31, 1943. Addition to 646,476. [Class 38(v)]  In order to avoid stoppage of the mechanism of the switch of the parent Specification at the deadcentre position with the movable contact out of engagement with either fixed contact, two incissions are made in the ends of members 15, 18, and the central portion is laterally offset from the members so as to. form the projections 15d, 18d, the outer portions being inclined in the direction of offset of the projections, so as to form knife-edges 15g, 18g, about which the telescoping eyelets pivot. The edges 15g, 18g, are preferably intermediate the planes of thickness of projections 15d, 18d.
Patent GB-1095170-A (GB)
Title: Improved multicell accumulator battery
IPC: H01M50/529
Filed: 1965-02-04
Abstract: 1,095,170. Accumulator. TUDOR A.B. Feb. 4, 1965 [Aug. 7, 1964], No. 4865/65. Heading H1B. In a multi-cell accumulator 1 in which intercell connectors 8 extend between the cell partitions 4, a quantity of sealing material 11 is placed around that portion of the connector engaging vertical bores in the partition wall. The bores are formed of two concentric holes, the lower part having a less diameter, and the upper part having a greater diameter than the thickness of the partition.
Patent GB-1219924-A (GB)
Title: Surge voltage testing of tuning circuits and carrier-frequency blocking circuits used in modulated carrier-frequency telephony over high-tension lines
IPC: G01R31/327
Filed: 1968-01-31
Abstract: 1,219,924. Circuit testing. LICENTIA PATENT-VERWALTUNGS-G. m. b. H. Jan. 31, 1968 [Feb. 2, 1967], No.4955/68. Heading G1U. To test a tuning and/or carrier frequency blocking circuit 7, used in modulated carrier frequency telephony over H.T. lines for its ability to withstand surge voltages, the signal from a conventional surge voltage generator 13 is applied to the circuit under test via a spark gap 12. This has the effect of providing a surge voltage which simulates the most unfavourable surge loading under operating conditions. The test is repeated for different amplitudes of surge voltage, the voltage being observed on an oscilloscope 19 (connected via a capacitive divider 15). The current through the test circuit is observed at 16 and should increase regularly, with no sudden irregularities, during the course of the measurement. The values of the individual components of the circuit are measured before and after the test to ensure that no change has occurred. The system under test shown in the drawing consists of a tuning circuit C1, C2, C3, L2, in parallel with a surge diverter 6. The surge diverter is generally slow to respond initially, so the tuning circuit must withstand the first part of a surge. The system is normally in parallel with an inductive blocking device, but this is of more robust construction, and should not require test.
Patent GB-1024101-A (GB)
Title: Thermoelectric devices
IPC: H01L35/32
Filed: 1964-02-05
Abstract: 1,024,101. Thermoelectric devices. RADIO CORPORATION OF AMERICA. Feb. 5, 1964 [Feb. 19, 1963], No. 4956/64. Heading H1K. A thermo-electric generator 10 comprises a pair of N-type and P-type semiconductor thermoelements N and P, respectively, connected thermally and electrically at their hot ends by a strap 16 of semi-conductor material having substantially the same coefficient of expansion as the elements N and P and being of a material which does not appreciably react chemically with the material of the elements at operating temperatures. The elements are preferably made of silicongermanium alloys having silicon in the range 50-95 atomic per cent and either polycrystalline or single crystalline, and the strap may comprise shoes NS and PS made respectively of N- and P-type semi-conductor and brazed to the elements and to each other. The shoes are made of material similar to that of the elements, and are brazed with a noble metal, or an alloy containing at least 50% by weight of noble metal, at 1075 C. under a pressure of 50 grams/cm<SP>2</SP>for about two minutes in a vacuum to produce a strong low resistance non-rectifying joint. The shoes may be integral with the respective elements, or alternatively the strap may consist of a single block of heavily doped N- or P-type silicon brazed to the two elements. The strap has substantially the same cross-sectional area and resistivity as the two elements, which have tungsten shoes 12, 14 at their cold ends. The tungsten shoes may be brazed to the elements with copper.
Patent GB-997487-A (GB)
Title: Improvements in or relating to fluid-pressure control valves
Inventor: RABETT REGINALD GEORGE EDWARD
IPC: G05D11/00
Filed: 1963-02-07
Abstract: 997,487. Valves. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Feb. 7, 1964 [Feb. 7, 1963], No. 5004/63. Heading F2Y. A fluid - pressure control valve of the kind in which the pressure of fluid passing into and out of the valve acts upon relatively fixed opposed faces of a piston 10 or piston assembly has a transfer duct 16 extending between the opposed faces and a valve 22 for controlling automatically thepassage of fluid through the duct in accordance with the position of the piston or piston assembly. Fluid-pressure at the outlet of the duct 16 acts on the right-hand side of a part 12 of the piston while fluid-pressure at the valve inlet 6 acts through an adjustable needle valve 32 and passages 30, 38, 31 and 39 on a part 13 of the piston. Alternatively, the latter part may be subjected to the fluidpressure in the outlet duct 29 through an adjustable needle valve 33, the valve 32 being closed. The spacers at the lefthand side of the part 12 and of the valve 22 are provided with vents 40, 27. The passage 38, which may be used as a by-pass with both valves 32 and 33 open, may be formed in the body or be omitted.
Patent GB-720753-A (GB)
Title: Improvements in and relating to grain binders
Inventor: KNALMANN ALVIN KLEMENS
IPC: A01D37/00
Filed: 1953-02-24
Abstract: 720,753. Reaper-binders. AKTIEBOLAGET WESTERASMASKINER. Feb. 24, 1953. No. 5188/53. Class 6 (3).  The moving parts of a tractor-drawn reaperbinder 1 are driven from a main shaft 10 extending horizontally and approximately longitudinally of the direction of travel, the main shaft being driven through a jointed shaft 13 from the tractor power take-off 12 and being arranged to transmit power to an underlying crank-shaft 4 which drives the cutting mechanism, the crank-shaft being also horizontal but at an angle to the main shaft and being connected to the latter through gearing 8, 9 and an overload-release device 21, 22. The gearbox 7 is at the rear end of the shaft 4, the forward end of which carries the cutter-driving crank 5. The gear 9 has oblique teeth which engage the gear 8 mounted on the hollow shaft 17 free on the shaft 4 but connected to it through the overload-release comprising toothed discs 21, 22, the latter being keyed to the shaft 4 and pressed into engagement with the disc 21 by a spring 24. The shaft 17 also carries a double-pulley 18 from which belt-drives are taken to the aprons and elevator. When the clutch 21, 22 slips these parts are still driven, but the cutter stops.
Patent GB-234198-A (GB)
Title: Improved construction of apparatus for heating fluids
IPC: F28D19/04
Filed: 1924-02-29
Abstract: 234,198. Green & Son, Ltd., E., and Slade, H. Feb. 29, 1924. Regenerators.-Apparatus for transferring heat from one fluid to another, such as from the products of combustion of a furnace to the air for combustion, comprises a number of rotary discs J mounted on a shaft I within a metal casing A suitably packed with non-conducting material B such as asbestos. The casing is divided into two compartments by a partition wall formed by strips H arranged between the discs and secured to the casing at G and to collars K arranged between the discs and surrounding the shaft I. The strips may be arranged in a vertical plane or at an angle, and may be of any shape in crosssection, but have one or both edges making close contact with the discs to ensure a tight joint and to act as scrapers. Inlets C, D and outlets C<1>, D<1> are provided in the casing on opposite sides of the partition H for the heating fluid and fluid to be heated. The inside of the casing is provided with projections L engaging with the discs to ensure alignment and prevent buckling.
Patent GB-916002-A (GB)
Title: Electromagnetic fluid control valve providing an adjustable throughput
IPC: H01F7/16
Filed: 1961-02-13
Abstract: 916,002. Valves. REGULATION AUTOMATIQUE. Feb. 13, 1961 [Feb. 17, 1960], No. 5243/61. Class 135. A combined electromagnetic and manually-actuable valve comprises a body 1 having aligned inlet and outlet ports controlled by a manually-rotatable conical plug valve 4 which has a diametral passage 6 alignable with the inlet and outlet ports and a second passage at right-angles to the passage 6 and formed in two sections of which one section opens directly into an upper chamber 19 in the plug, whilst the other section 5 opens through a seat 21 in the chamber, this seat co-operating with an electromagnetically-actuated valve 9. The valve 9 is carried on the armature 8 of a solenoid of which the casing 11 housing the coil 10 is rotatably mounted on a tube 16 and retained against a cap 17 of the plug by a spring 13, whereby the solenoid casing can be held stationary whilst the plug valve is being turned.
Patent GB-879206-A (GB)
Title: Improvements in and relating to sized textile material
IPC: D06M15/53
Filed: 1958-02-19
Abstract: A composition suitable for warp sizing textile materials comprises an aqueous solution containing poly (ethylene oxide) having a reduced viscosity in acetonitrile of at least one at 30 DEG C. The reduced viscosity is obtained by dividing the specific viscosity by the concentration of the polymer in the solution and is measured at a concentration of 0,2 grams of polymer in 100 ml of acetonitrile at 30 DEG C.  The poly (ethylene oxide) may have a molecular weight from at least 20,000 to several hundred thousand and higher. The solution may also contain up to 60% by weight of the poly (ethylene oxide) of a polyalkylene glycol, e.g. polyethylene glycol having a molecular weight of 400-15,000, or up to 90% by weight of the poly (ethylene oxide) of starch, e.g. corn starch, or a hydroxyalkylated starch. The poly (ethylene oxide) may be prepared by polymerizing ethylene oxide in the presence of 0,3%-3% calcium, strontium, barium or manganese carbonate at 90 DEG -150 DEG C. of 0,1%-2% of strontium methylate, calcium glycoxide, barium phenolate or the calcium derivatives of methoxy methanol or diethylene glycol at 90 DEG -150 DEG C. or of 0,02%-10% of the hexammoniates or amides of the alkaline earth metals or the decomposition products of the hexammoniates which contain the alkaline earth metal, nitrogen and hydrogen at 0 DEG -60 DEG C. Specification 568,150 is referred to.ALSO:Strontium methylate is prepared by reacting strontium with methanol.  Specification 568,150 is referred to.ALSO:Synthetic or natural textile material, e.g. yarn, fibre or thread, is warp sized with an aqueous solution containing poly(ethylene oxide) having a reduced viscosity in acetonitrile of at least one at 30 DEG C.  The reduced viscosity is obtained by dividing the specific viscosity by the concentration of the polymer in the solution measured in grams of polymer per 100 ml of solvent and is measured at a concentration of 0,2 grams of polymer in 100 ml of acetonitrile at 30 DEG C.  The poly(ethylene oxide) may have a molecular weight from at least 20,000 to several hundred thousand and higher.  The size solution preferably has a viscosity of 100-15,000 centipoises and may be applied to the material at room temperature or at temperatures up to 190 DEG F.  The solution may also contain up to 60% by weight of the poly(ethylene oxide) of a polyalkylene glycol, e.g. polyethylene glycol having a molecular weight of 400-15,000, or up to 90% by weight of the poly(ethylene oxide) of starch, e.g. corn starch, or a hydroxyalkylated starch. Specified fibres are cotton, wool, viscose rayon, nylon, "Orlon" (Registered Trade Mark), "Dacron" (Registered Trade Mark) and "Dynel" (Registered Trade Mark).  Specification 568,150 is referred to.
Patent GB-475726-A (GB)
Title: Improvements in and relating to electric cables
IPC: H01B11/00
Filed: 1936-02-22
Abstract: 475,726. Cables. COLLARD, J. Feb. 22, 1936, No. 5357. [Class 36] A cable comprises an inner conducting sheath 3 air-spaced from a central conductor 1, an auxiliary conductor 4 associated with the central conductor in such a manner as to form a balanced circuit for reducing or eliminating low frequency interference, an outer conducting sheath 6 surrounding the sheath 3 for reducing or eliminating interference at high frequencies, and paramagnetic material 7 applied externally to the sheath 6 for eliminating or reducing interference at intermediate frequencies. A paper sheath 2 is provided beneath the inner conducting sheath 3, which is of copper-tape : the insulation 5 of the conductor 4 is of paper. The sheath 6 may be of lead, tin or a lead alloy and the tape 7 of soft iron or a nickel alloy. Outside the tape 7 is a woven textile covering 8. Alternatively, the conductor 4 may be applied helically to the internal surface of the sheath 2. Specifications 452,713, 452,772, and 466,418 are referred to.
Patent GB-1021131-A (GB)
Title: Improvements relating to windscreen wipers
Inventor: WATSON FABIAN NORMAN
IPC: B60S1/34
Filed: 1964-02-07
Abstract: 1,021,131. Windscreen wipers. DUDLEYS (REDDITCH) Ltd. Jan. 22, 1965 [Feb. 7, 1964], No. 5357/64. Heading A4F. The windscreen wiper described in Specification 872,623 is modified in that the spring 46 pressing the wiper blade on to the windscreen is connected between the wiper arm 10 and an anchor member 29 on the driving spindle, and the relative movement between the driving and driven coupling members 14, 11 resulting from an increased resistance to movement of the wiper blade over the windscreen causes the anchor member 29 to move towards the pivot 34 of the wiper arm to relieve the pressure of the wiper blade on the windscreen.
Patent GB-765326-A (GB)
Title: Electrical binary adder circuit
IPC: G06F7/502
Filed: 1955-02-23
Abstract: 765,326. Digital electrical calculating-apparatus. INTERNATIONAL BUSINESS MACHINES CORPORATION. Feb. 23, 1955 [Feb. 26, 1954], No. 5398/55. Class 106 (1). An electrical binary adder comprises, for each numerical order, a sum circuit and a carry circuit each including a transistor and an output network, three input connections extending to both said transistors, the sum circuit having a normal output state and an operated output state assumed in the presence-of a signal on one of said input connections, the carry circuit having a normal output state and an operated output state assumed in the simultaneous presence of signals on at least two of said input connections, and means connecting the output network of the carry circuit to the transistor in the sum circuit and effective when the carry circuit is in its operated state to deliver to said transistor a signal of such sign and magnitude as to prevent a change of state in the sum circuit when signals are applied simultaneously to two of said input connections whilst permitting such change of state in said sum circuit when signals are applied simultaneously to all three of said input connections. The sum and carry circuits 1 and 2 respectively are both arranged as high gain amplifiers and the connecting means 50 as an inverter. In the no signal condition the three input leads 6, 7, 8 are each connected by -15 v., shown diagrammatically at 3, the sum and carry circuits are both cut-off and the inverter circuit 50 is conducting, being biased to this state by a negative voltage applied to its base via a resistor 47 from the collector circuit of the carry circuit. Upon receipt of a signal on one input line, say line 6, the voltage of line 6 rises to -5 v., causing the potential of a junction 16 to rise, and the transistor in the sum circuit conducts heavily giving an output signal across terminals 33 and 34. The carry circuit is, however, not appreciably affected by one input signal. With two input signals the carry circuit is affected and commences to conduct heavily producing an output signal across terminals 35 and 36 and, by raising the voltage on the base of the transistor in the inverter circuit, causes the inverter circuit to become non-conductive. With two input signals the sum circuit would be expected to remain conductive, but as the inverter circuit is now cut off the lowering in potential of a coupling lead 48 nullifies the rise in potential of the junction 16 due to the two input signals and the sum circuit is held non-conducting. Upon receipt of three input signals conduction in the collector circuit of the carry circuit will tend to increase, but the output signal at terminal 35 will be stabilized by a diode 23. Thus with three input signals the inverter circuit remains cutoff, the potential at junction 16 rises, and the sum circuit conducts. The apparatus thus adds signals applied to leads 6, 7, 8, and gives the sum, in binary form, at output terminals 33 and 35.
Patent GB-548083-A (GB)
Title: Improvements in and relating to convector electric heaters and to heating units for use therein
IPC: F24H3/00
Filed: 1941-04-25
Abstract: 548,083. Electric air heaters. HOUNSLOW, C., and SEAGER, A. J. April 25, 1941, No. 5405. [Class 39 (iii)] An electric heating unit comprises three spaced plates 1, 2, of asbestos fibre each with four vertical rows of holes 3 through which resistance coils 2 are threaded in zigzag manner. The coils in the first and third rows are in series, and also in the second and fourth rows, each forming a heating circuit which may be connected together in parallel. The plates are connected and spaced by bolts 4 and sleeves 5. Brackets 7 connect the heater to a plate 13, curved at the top, to deflect warm air forward, and a second plate .14 may be arranged near the upper part of the plate 13 to deflect air warmed by the first plate into the main air stream. The whole apparatus may be placed in a ventilating shaft of a building, or in a light metal casing to provide a portable convection heater.