baber/WOPTO huggingface dataset:
Patent GB-787115-A (GB)
Title: Phonograph pick-up cartridge case and turnover mechanism
Inventor: WOOD JOHN FREDERICK
IPC: H04R17/06
Filed: 1956-05-31
Abstract: 787,115. Gramophone pick-ups. ELECTROVOICE, Inc. May 31, 1956, No. 16898/56. Class 40 (2). [Also in Group XXXIX] In a pick-up in which a piezo-electric transducer and two styli arranged for alternate use are replaceable as an assembly, the transducer 27, Figs. 3 and 6, carries oppositely-directed styli 25, 26 on a member 24 at one end and has the other end supported by electrical contact blades 28, 29 within a stepped tubular bore 20 in a plastic housing 23, a rubber damping pad 31 being provided at an intermediate position. The contact blades 28, 29 are located in triangular recesses 30, 30a in the housing which is removably positioned in a rotatable sleeve 12, correct location of the housing being determined by a key 42 and a mating slot. The ends of the housing adjacent the styli are bevelled, as shown, to form styli-protecting arms, while grips 44 facilitate withdrawal of the housing assembly from the sleeve. Electrical connection to the pick-up is provided by contact pins 32, 33 which extend through the end wall of the sleeve and engage the contact blades with a wiping action when the housing assembly is fitted. In use, stylus selection is effected by rotating the sleeve and the inserted housing assembly in a bracket comprising spaced plates 13, 14 which are secured by a screw 16, Fig. 2, to a boss 15 integral with the tone arm. Rotation is carried out by displacement of a handle 21, Fig. 1, which rotates a gear 17 engaging with teeth 19 formed around the periphery of the sleeve, certain teeth being elongated so that they engage with a stop 22 and restrict the rotational movement to 180 degrees. It is suggested that rotational stylus selection may be carried out automatically by coupling hole 41 in gear 17 through suitable linkage to the turntable change-speed mechanism. The styli are located in the correct operation positions by a spring catch comprising a forked spring 36 which engages a cam 38, the cam being fixed to the pivot pin 18 of gear 17.
Patent GB-490509-A (GB)
Title: Improvements in or relating to arrangements for reducing arcing during switching of alternating currents
IPC: H02M1/26
Filed: 1936-12-14
Abstract: 490,509. Arc-rupturing in switches. SIEMENS-SCHUCKERTWERKE AKT.-GES. Dec. 14, 1936, No. 16909 /38. Convention date, Dec. 13, 1935. Divided out of 492,369. [Class 38 (v)] An A.C. switching arrangement, in particular for single switching operations, has an impedance (shown as a winding 4) which is variable in synchronism with the current, connected in series with the contact 2 and so varying that the instantaneous-current value changes only gradually in the neighbourhood of current-zero, whilst a further impedance (shown as a condenser 3) which is of less value than that of the series impedance during the zero-current passage, is in parallel to the contacts. The arrangement is such that during the initial opening movement of the contacts the voltage is mainly across 4 and only a relatively low v oltage appears across the contacts, the condenser 3 in the example shown acting as a short-circuit at the instant of interruption. The series impedance may be the secondary of a transformer in which the primary induces additional voltages of higher frequency and suitable phase, or they may be of the nature set out in Specification 492,369, that is, constructed to be unsaturated in the neighbourhood of zero current and to be saturated during greater current values. The contacts may be separated in a vacuum or in a preferably compressed, static quenching gas or liquid, or they may be of nozzle-form through which quenching medium circulates or flows, preferably in blastform. Insulating partitions may be inserted between the contacts immediately after separation. The Specification points out, with curves, Fig. 2 (not shown), the desirability of using a high velocity of separation of the contacts if the current-interruption occurs at a zero of the cycle and, if such high velocity is unobtainable, of separating the contacts before the zero of the cycle.
Patent GB-1078013-A (GB)
Title: Improvements in rings for ring spinning, twisting and like frames
Inventor: WHITE WILLIAM ANDREW MCLINTOCK
IPC: D01H7/62
Filed: 1965-04-22
Abstract: A spinning ring of porous sintered metal has an internal annular cavity from which extend outwardly one or more passages through which lubricant can be supplied to the cavity, e.g. by a wick.  The cavity may be made during the formation of the ring by including in the material a solid ring of carbonaceous or other volatile substance.
Patent GB-222553-A (GB)
Title: Improvements relating to retarding and stopping mechanism for mining and other vehicles
IPC: B61K7/22
Filed: 1923-06-30
Abstract: 222,553. Castleman, F. M., and Westinghouse Brake & Saxby Signal Co., Ltd. June 30, 1923. Axle stops; wheel stops. -Mining tubs and like vehicles are stopped by engagement with a spring device disposed on the track, the device becoming automatically disengaged to permit the vehicle to proceed after the vehicle has been stopped. In one form, a shaft 2 rotatably and slidably mounted in bearings 4, 10 and has a screw-thread of quick-pitch formed at the part 3, engaging a similarly-threaded collar 5 to which is secured one end of a spring 7, and which presses against the bearing 4 with considerable friction. The other end of the spring is secured to a sleeve 9 secured to the shaft 2 and carrying a lug 12 for engagement with the axle 17 of a vehicle. When this occurs, the spring is compressed and the longitudinal movement of the shaft 2 by causing the rotation of the collar 5 sets up torsion in the spring which eventually becomes sufficient to overcome the friction between the axle 17 and the lug 12 so as to effect the disengagement of these parts and permit the vehicle to proceed. The lug 12 is provided with an extension 18 which becomes engaged with the underside of the axle so as to delay the return of the parts to their normal position until the axle is clear of the extension. The device may be rendered inoperative by a lever 19 mounted on the squared end part 11 of the shaft 2. In a modification, the lug 12 is replaced by a block arranged for engagement by the vehicle wheel and carrying a' spring-pressed pin which projects over the wheel flange but in such a manner as to permit the block to swing out of engagement of the wheel by the torsion of the spring. In a further form, Fig. 7, the spring 7 is rigidly attached at one end 23 to the shaft 2 and at the other to a fixed abutment 24. A sleeve 25 carrying helical blades 26 and freely mounted on the shaft 2 is normally urged by a spring 33 so that projections 28, 29 on the sleeve and on a collar 30 secured to the shaft are in engagement. By contact of the tread of the vehicle wheel with one of the blades 25, the shaft 2 is turned against the torsion of the spring 7 so as to bring a block 35 secured to the shaft into the path of the wheel whereby the spring 15 is compressed and the vehicle brought to rest. When the vehicle is to proceed, the sleeve 25 is moved to the right by a hand-actuated lever 34. This disengages the projections 28, 29 and allows the spring 7 to swing the block 35 clear of the wheel. An axle counter may be arranged for actuation by the longitudinal or rotational movement of the shaft 2 or it may be arranged to permit the passage of a definite number of wheels or axles.
Patent GB-781025-A (GB)
Title: Improvements in or relating to automatic shut-off valve systems for pressure indicators
IPC: G01L19/00
Filed: 1955-06-14
Abstract: 781,025. Pressure gauges. ARO EQUIPMENT CORPORATION. June 14,1955 [Dec. 6, 1954], No. 17067/55. Class 106 (2). To protect a manometer 48 against loss of the indicating liquid an automatic shut-off valve A is connected to its upper end and operated by pressureresponsive means 74 connected to its lower end. As shown applied to apparatus for testing the oxygen regulator 14 of an aviator's helmet, two manometers 56, 48 for high and low pressures respectively are connected in parallel by pipes 50a, 52, 54a, the valve A being fitted in the low-pressure pipe 52 and comprising a diaphragm 74 connected at 80 to a pipe 50b leading to the high-pressure pipe 50a and carrying a valve 66 adjustable by a screw 70 accessible by removing a screw plug 67. The oxygen regulator is placed in a chamber 12 capable of subjection to pressure or vacuum, and the hose 20 that is ordinarily connected to the aviator's helmet is connected to a suction source through a flowmeter 36. Oxygen is supplied to the regulator 14 from a cylinder 28 through a valve V<SP>0</SP>, and the chamber 12 is connected to the atmosphere through a flowmeter 46 and valve V<SP>3</SP> and to the low-pressure connection 54a by a pipe 54. If there is a leak in the oxygen regulator that increases the pressure in the chamber 12 above the maximum reading of the gauge 48 the valve 66 closes preventing loss of liquid through pipe 52, the high-pressure gauge 56 continuing to operate. A similar shut. off valve may be fitted in the pipe 54 to protect the manometer 56 against loss of liquid.
Patent GB-558538-A (GB)
Title: Improvements in or relating to soles for footwear
IPC: A43B13/28
Filed: 1942-12-01
Abstract: 558,538. Shoe soles. REICH, K. Dec. 1, 1942, No. 17076. [Class 17 (ii)] A sole, half-sole, or three-quarter sole, particularly of rubber, is split at about midway of its thickness leaving only a small toe portion a integrally united. The portion a<SP>2</SP> is machine sewn to the shoe, and the portion a<SP>1</SP> is afterwards cemented to it.
Patent GB-842918-A (GB)
Title: A bistable circuit
Inventor: ECKERT JOHN PRESPER
IPC: H03K3/26
Filed: 1957-05-30
Abstract: 842,918. Transistor and thermionic discharge tube two stable slate circuits. SPERRY RAND CORPORATION. May 30, 1957 No. 17212/57. Class 40(6). In a circuit providing one of two possible output levels, Fig. 2, control signals are applied over lines 11, 12 to amplifier 23 controlling a gate or modulator circuit 24 also supplied with carrier from generator 26, the output being applied to a circuit 27 which may include a D.C. level changing circuit and filter. A feed back loop 28 from the output 27 ensures that when a state is established at the output the D.C. level at the input is maintained after the cessation of the input so that the circuit operates as a two stable state circuit. A further circuit 29 may be provided to give an output of opposite sign. In a practical embodiment, Fig. 1, transistor 10 is normally non-conducting so that diodes D 4 , D 5  are conducting to hold line 16 at potential V 2 , and as a result carrier signals fed in over diode D 6  are not passed to the output. Upon the occurrence of a set signal applied over diodes D 2  to the emitter of transistor 10, the transistor conducts so that the collector potential falls and diodes D 4  D 5  are cut off and the line 16 is left free to allow carrier signals to pass through capacitor C 1  to the rectifying network D 7 , R 3 . The output is filtered by the circuit L 1 , C 2  C 3  to provide a positive-going output pulse on line 18. This pulse is fed back over a resistor Rf to maintain the base circuit of transistor sufficiently positive to hold it in conduction. An output of opposite sign may be derived from line 20 by poling the diode D 8  in the reverse manner to D 7  and employing a potential source E. In a modification, Fig. 3, carrier is applied in push-pull to diodes D 10 , D 11  the centre-tap of the primary of transformer T being connected to the collector of transistor 10 so that the circuit is completed when the transistor conducts. The secondary feeds over a bridge rectifier and filters the output and also provides a feed-back loop to the base of the transistor 10. Alternatively, Fig. 4 (not shown) the-centre tap of the input carrier transformer may be connected to the potential V 2  of Fig. 1 with the diodes D 10 , D 11  reversely poled so that carrier current only flows when the transistor 10 is cut off and the collector is held at V 2 . In a further modification, Fig. 5 the input control potentials are fed to a thermionic discharge tube 40, a positive signal applied to the grid over input 15<SP>1</SP> being effective to lower the anode potentials so that carrier on terminal 17 is passed to the rectifying network thus giving a positive output which is fed back over the resistor Rf. The circuit is reset by a negativegoing signal applied over terminal 14 and diode D 1  to lower the potential of the grid so that the anode potential rises until caught at the potential V 2 . due to the diodes D 4 , D 5  conducting, thereby preventing carrier flowing to the network R 3  D 7  to give an output.
Patent GB-172671-A (GB)
Abstract: 172,671. Hamilton & Co., Ltd., R. F., Pile, F. S. J., and Stone, G. E. M. June 10, 1920. Electromagnetic and thermal current meters; temperature errors, compensating for.-In pyrometers comprising a thermo-couple to the cold junction terminals of which a millivoltmeter is connected temperature errors are compensated for by means of series and shunt coils of different resistance values applied to the thermo-couple end of the circuit. A similar resistance arrangement may also be employed at the millivoltmeter end. In the Figure (Provisional Specification 15678/20) the cold junction terminals C, J are associated with a series resistance S, E and a shunt resistance S, H in the manner shown, T1, T2 being the external terminals of the thermo-couple. The millivoltmeter may be arranged as in the second Figure (Provisional Specification 4249/21) with a series resistance Se, which may be the usual swamping resistance, and a resistance, Sh in shunt to the moving coil and its connections. The characteristics of these resistances are as follows : The series resistances have little or no temperature co-efficient and may be of manganin; the shunt resistances are composed of material such as iron or copper possessing a high temperature coefficient with or without a part having a small neutral or negative temperature coefficient. The shunt resistances axe disposed so as to be subjected to the same temperature variations as occur in the parts to which the compensation is directed but both shunt and series resistances mav be so disposed, and in this case the series resistance, or, in the case of the millivoltmeter, a part of this resistance, may have a negative temperature coefficient. One Provisional Specification describes the application of the compensating arrangement to measuring instruments of the pivoted-coil and suspended-coil type generally.
Patent GB-595580-A (GB)
Title: Improvements in or relating to screens and screening methods
IPC: B07B7/08
Filed: 1945-07-06
Abstract: 595,580. Strainer separators. CROSS, E. J. (Nordberg Manufacturing Co.). July 6, 1945, No. 17306. [Class 23] A rotary structure supporting a cylinder of wire cloth 53, or other straining material, is mounted by bearings 27, 28 on eccentric portions 14, 16 of a central spindle itself mounted in bearings 23, 25 carried by a fixed sleeve 31 and rotated bv a motor 7. Rotation of the structure is retarded by the rolling contact between a friction lining 57 in a sleeve 56, forming part of the structure, and the exterior of the sleeve 31. The structure, accordingly, rotates at a speed lower than that of the spindle and the faster moving spindle imposes on the structure, by reason of the eccentric mounting 27, 82 a gyratory motion. There may be fifteen gyrations for each revolution of the structure. The gyratory motion of the strainer cylinder causes the material lying on the wire cloth to leave the cloth for a part of each gyration and, as it falls under gravity when free of the wire cloth, it returns to the cloth at a slightly lower level so producing a downward travel of the material over the straining cylinder. The material to be treated is fed on to a top plate 39 from which it is thrown on to the strainer cylinder and it is delivered into a hopper 3.
Patent GB-458129-A (GB)
Title: Improvements relating to strip metal fittings for supporting shelves or for similar constructive purposes
IPC: A47B47/02
Filed: 1935-06-17
Abstract: 458,129. Furniture frames. SPICER, W. J., 77, Ladywood Road, Birmingham. June 17, 1935, No. 17335. [Class 52 (ii)] Shelving, tables, or similar articles are constructed with strip metal frame members 5 crimped to receive the shelf or like members 7 and held together by tie rods 8.
Patent GB-1368401-A (GB)
Title: N-protected amino acids and peptides
IPC: C07K1/06
Filed: 1972-04-14
Abstract: 1368401 N-protected amino acids and peptides ELI LILLY & CO 14 April 1972 [15 April 1971] 17373/72 Heading C2C Novel compounds III in which R is H, Cl, C 6 H 5  or phenyl substituted by 1-4 C alkyl, 1-4 C alkoxy or halo; R 1  is H or 1-4 C alkyl; R 2  is 1-4 C alkyl or R 1  and R 2  together with the C to which they are attached form a 5-7 membered carbocyclic ring; R 4  and R 6  are H or 1-4 C alkyl; R 5  and R 7  are H, 1-4 C alkyl, hydroxy-1-4 C alkyl, protected hydroxy-1-4 C alkyl, amino-1-4 C alkyl, protected amino 1-4 C alkyl, mercapto- 1-4 C alkyl, protected mercapto-1-4 C-alkyl, 1-4 C alkylthio alkyl, carboxy-1-4 C alkyl, protected carboxy-1-4 C alkyl, guanidino-1-4 C alkyl, protected guanidino-1-4 C alkyl, guanidino-oxy-1-4 C alkyl, imidazolylmethyl, protected imidazolylmethyl, indolylmethyl, protected indolylmethyl, phenyl, 4-hydroxyphenyl or protected 4-hydroxyphenyl; R 8  is OH, OCH 3 , OC 2 H 5 , O-C(CH 3 ) 3 , Cl 3 CCH 2 O, succinimido-oxy, phenoxy, benzyloxy, 4-nitrobenzyloxy, 2,4,5-trichlorophenoxy, pentachlorophenethoxy, or pentafluorophenoxy and the acid addition, alkali or alkaline earth metal, ammonium and amine salts; m and n are 0 or 1-4; and p is 0 or 1-14; are prepared by conventional methods of peptide synthesis. The protecting group R-C#C-C(R 1 )(R 2 )-OCO- may be removed by catalytic hydrogenolysis at neutral pH under mild conditions to yield the corresponding N-unprotected peptides or amino acids. 1 - Phenyl - 3 - methyl - 1 - butyn - 3 - yl pheny<SP>l</SP> carbonate is prepared by reaction of the butyn- 3-ol with phenyl chloroformate. 3-Methyl-1- butyn - 3 - yl 2,4,5 - trichlorophenyl carbonate and 3 - methyl - 1 - pentyn - 3 - yl 2,4,5 - trichlorophenyl carbonate are similarly prepared. 3 - Methyl - 1 - butyn - 3 - oxycarbonyl chloride and 1 - ethynyl - 1 - cyclohexanyloxycarbonyl chloride are prepared by reaction of the appropriate alcohol with SOCl 2 .
Patent GB-285716-A (GB)
Title: Improvements in pencils
IPC: B43K21/08
Filed: 1927-06-30
Abstract: 285,716. Yoshimatsu, T. June 30, 1927. Pencil holders.-In a screwpropelling pencil holder, two longitudinally-slotted bushes are provided, one being fixed, and the other rotatable in the casing, so that the operating- mechanism can be rotated without damage beyond the limits of propulsion of the lead. The lead is held in a carrier 20 having a projection 25 passing through a helical slot in a member 19. A lead ejector 21 is slidable in the carrier 20 and has a projection 27 extending through a slot in the upper end of the carrier into the helical slot of the member 19. The lower coils of the helical slot are of reduced pitch to enable the carrier 20 and ejector 21 to slide relatively to one another The member 19 is secured to a conical tip 2 rotatably mounted on the end of the barrel by means of a spring ring 11 cooperating with a U-shaped and a V-shaped groove in the tip and barrel respectively. The projections 25, 27 pass through the helical slot into a longitudinal slot formed in bushes 12, 13 mounted in the barrel. The bush 12 is formed with a stamped-out tongue 17 engaging in a slot in the, barrel to prevent rotation and to cause the lead to be moved forward or backward on rotation of the member 19. One side of the rear end of the longitudinal slot in the bush 12 is rounded and the other side angular to facilitate the disengagement and re-engagement of the projections 25, 27 with the slot when the upper limit of movement has been reached. The lower bush 13 is rotatable in the casing so that when the mechanism is screwed to its forward limit, the projections will pass into the slot in the bush 13 and the parts will then rotate freely without strain. The upper end of the member 19 is closed by a cap 23 to form a bottom for the space 28 which serves as a receptacle for refills, and an eraser 7 covered by a cap 8 is also provided.
Patent GB-278109-A (GB)
Title: Tongs for the bloodless castration of animals
IPC: A61D1/06
Filed: 1926-07-12
Abstract: 278,109. Eschini, E. July 12, 1926. Castrating-appliances. -A castrating. appliance comprising a pair of tongs 1, 2 is provided with two pairs of gripping members 14 situated on opposite sides of the tongs 1, 2 for holding the spermatic cords. In the operation of the appliance the members 14 close about the cords before the tongs 1, 2 close, thus pure venting slipping of the cords. The tongs are provided with clamping- jaws 3, 4, the distance between which can be adjusted by a wedge 5 which can be moved by a screw 6. The tongs are pivoted together at 7 and are connected by hinged links 8, 9 to handles 10, 11 which are pivoted together at 12. The gripping members 14 are also pivoted at 7 and are normally held open by springs 16. At the commencement of the closing movement of the handles 10, 11 the pivot 12 moves between the rear ends 20 of the members 14 and closes the said members before the jaws 3, 4 close. The members 14 can be closed independently of the tongs 1, 2 by means of a lever 17, the end 18 of which engages between the ends 20 of the members 14. The jaws 3, 4 may be provided with single or double pressure edges.
Patent GB-925660-A (GB)
Title: Collapsible float capable of opening when dropped from aircraft
Inventor: CHIPPERFIELD VICTOR JAMES
IPC: B64D1/02
Filed: 1959-05-22
Abstract: 925,660. Buoys. ULTRA ELECTRONICS Ltd. April 11, 1960 [May 22, 1959], No. 17460/59. Class 68 (1). [Also in Group XXXIII] Equipment for aircraft conveyance and dropping comprises an article to be floated in water, a normally collapsed float secured thereto, a valve provided on the float and operable between a closed position in which the float is sealed and an open position, an air-fall retarding device secured to the valve and operative when the equipment is released from an aircraft to pull the valve into the open position and the float into the extended position, thus filling the float with atmospheric air, and spring means mounted on the valve for closing the valve to reseal the float when the pull of the air-fall retarding device thereon is released. A floating buoy 1, attached by releasable means 3 to the body of an aircraft 2, is divided into three main portions, a container 4 for essential equipment such as a hydrophone, a float 5 and a parachute 6 normally opened by a static line 6a attached to the aircraft. The float 5 carries a one-way valve 7, closed by a spring 7a and opened during descent by the drag of the parachute to allow air to enter the float during descent. When the float reaches the water the parachute lines become detached and permit the valve 7 to close. The float, instead of being flexible as in Fig. 1, may comprise telescopic sleeve members provided with a locking pawl to retain them in extended condition and the parachute may be replaced by either a rotaryblade shoot or a convergent-divergent duet member.
Patent GB-175100-A (GB)
Abstract: 175,100. Dunlop Rim & Wheel Co., Ltd., Matthew, J. S., and Hopper, A. Nov. 22, 1920. Rim flanges, tools for removing and replacing. -A tool for use in replacing detachable split flanges as described in Specification 135,841, comprises a handle A, and an arm B, at right-angles thereto, having at its extremity two prongs B<1>, B<2>, one of which B<1>, is adapted to bear on the rim and form a fulcrum on which the tool is angularly moved to cause the flange D<2> to be sprung into the rim groove D<1>. The opposite end of the handle may be formed with a wedge-shaped or flattened extremity for use in removing the flange.