baber/WOPTO huggingface dataset:
Patent GB-1179672-A (GB)
Title: Triggering Method and Apparatus
IPC: G01R13/32
Filed: 1968-02-15
Abstract: 1,179,672. Pulse delaying; trigger circuits. TEKTRONIX Inc. 15 Feb., 1968 [17 Feb., 1967], No. 7427/68. Heading H3T. Trigger pulses, e.g. for an oscilloscope, are derived from recurring portions of an input signal and delayed by causing them to initiate a ramp waveform, sampling this ramp by the next trigger pulse before the end of the ramp, storing the sampled voltage and producing an output signal when the ramp again reaches the stored value. Provision may be made to advance or delay the triggering so that an appropriate portion of the input signal may be displayed. In Fig. 5 the input signal 42 passes through a circuit 40 with inherent delay T D  and triggers a bi-stable circuit 44 comprising crosscoupled opposite-conductivity type transistors 46 and 48, both of which are normally non- conducting. Conduction of transistor 48 rapidly discharges a capacitor 52 via clamping diode 54, whereupon the transistors revert to their non- conducting state. Capacitor 52 then recharges through transistor 58 generating a ramp voltage at point 3. The next input pulse is applied. without delay to transformer 64, and the positive portions of the secondary voltage turn on gating transistors 66, 70 to transfer the instantaneous voltage on capacitor 52 to a memory capacitor 74. The voltage on the latter is applied through a buffer stage comprising FET 78 and transistor 86 to a comparator 96, 98 which compares the value with that on capacitor 52. When the two become equal, transistor 98 conducts and provides an output pulse T 2  to trigger an oscilloscope. If it is desired to advance or delay the triggering, a voltage is fed in through resistor 90 to cause current to flow through resistor 88. This produces an offset voltage which increases or decreases the voltage obtained from capacitor 74 and thus alter the instant of conduction of transistor 98. The period of the incoming signals at 42 is thus continuously monitored and the instant of the output pulse controlled accordingly.
Patent GB-1005531-A (GB)
Title: Method of and means for making booklets
IPC: B42C3/00
Filed: 1964-02-21
Abstract: 1,005,531. Folding and delivering sheets. HAMILTON TOOL CO. Feb. 21, 1964 [Sept. 11, 1963], No. 7446/64. Heading B6H. A method of producing booklets comprises advancing a plurality of webs in superposed relationship, transversely connecting the webs at spaced intervals, transversely severing the superposed webs to form sub-assemblies of superposed sheets, and then folding the subassemblies to provide booklets, wherein the number of pages in each completed booklet is four times the number of webs. The superposed webs Z are stapled or stitched transversely and then guided by a stationary guide 62 and adjustable guide 60 to a cutting cylinder A and co-operating cylinder B. The cylinders are provided with movable and fixed blades 70, 71, respectively. A member 78 secured to the movable blade 70 guides the leading edge of the severed web Z to gripper jaws 90, 98 on the cylinder B. A spring pressed plunger 74 (not shown) maintains a plate 76 in the position shown to urge the web Z against the fixed blade 71. The movable blade is inclined to provide scissors effect. Tucker blades 120 on the cylinder B push the fold line of the superposed sheets into gripper jaws 130, 140 on a gripper cylinder C. Prior to reaching the guide plates 60, 62, the webs are slit longitudinally whereby several transversely spaced booklets are handled simultaneously by the cutting and folding cylinders.
Patent GB-494645-A (GB)
Title: Improvements in electro-mechanical control devices for lathes and other machine tools
IPC: B23Q5/34
Filed: 1938-03-10
Abstract: 494,645. Lathes &c. COTAL, J. March 10, 1938, No. 7492. Convention date, March 11, 1937. [Class 83 (iii)] A machine tool such as a lathe has two carriages movable independently by means consisting of a driving wheel located between two driven wheels each controlling the feed mechanism of one of the carriages an electromagnetic clutch being located between each driven wheel and the driving wheel for engaging the required feed. A worm-wheel 3 driven from a feed shaft 4 through gears 5 and 7 has annular armatures 8, 9 one on either side connected by studs 10 movable axially through the worm-wheel. The armatures coact with electromagnets 15, 16 energized by means of collector rings 17, 18 and secured respectively to gears 11, 12. The gear 11 operates the longitudinal feed of the carriage 1 through rack-and-pinion gearing and the gear 12 operates the transverse feed of the cross-slide 2. The contacts 19, 20 of the collector rings are connected by lines 21, 22 to terminals 23, 25 of two-pole switches C1, C2, connected in series to a supply 28. Parallel circuits from the switch poles 24, 26 are connected through electromagnet coils 30, 31 and switch 32 to the frame at 29. The switches are operated by a lever 34 which is normally held in the neutral position shown by a spring 36. To actuate the longitudinal feed the switch 32 is closed and the switch C<1> is also closed by moving the lever 34 in direction of arrow f<1>. This energizes the coil 15 and drives the gear 11 while the coil 30 holds the lever 34 in position. Similarly movement of the lever 34 in the direction of arrow f<2> actuates the cross-feed of the slide 2. Either feed may be stopped by opening switch 32 which causes lever 34 to be returned to neutral. For automatic stopping of the longitudinal feed a projecting dog 56 carried by a rotatable head 51 may be moved by a lever 52 so that it coacts with any one of a number of stops 57 on a stop bar 58. When the projection engages a stop, a plunger 48 is pushed back to operate a switch 46 to stop the feed, the saddle being then returned by hand. Similarly for stopping the cross-feed a projection 59 on the cross-slide coacts with one of a number of stops 60 on a rotatable stop bar 61 to operate a switch 47, and break the circuit 22. The invention is also applicable to other machine tools.
Patent GB-1301017-A (GB)
Title: Improvements in storage systems for loads
IPC: B65G1/04
Filed: 1970-02-17
Abstract: 1301017 Mechanical storage system JEUMONT-SCHNEIDER 17 Feb 1970 [19 Feb 1969] 7614/70 Heading B8E A storage system comprises units 10, 20, 30 each comprising elements 310 of at least two compartments 313 usually in stacks 311, 312 backing a handling passage which in the unit together with others, forms a corridor. Below each storage element runs an endless conveyer e.g. 31-37 arranged end to end with conveyers of other units and conveyers 01-07 and 41-47 of intake and discharge zones. A stacker crane is provided in each corridor capable of moving a load, stopped by a separating device in a corridor, for storage in a compartment 313 or removing a load from a compartment for transmission by the endless conveyers separating devices may be provided in the intake and discharge zone to allow degrouping or regrouping of loads therein. The conveyers 01-07, 41-47 may be in the form of strings of mobile trucks. The numbers and sizes of the units may be varied to change the store capacity, storage elements 382, 392 may be provided for special loads and conveyer 61, 62 may be provided for more rapid discharge.
Patent GB-684698-A (GB)
Title: Process and apparatus for producing acetaldol
IPC: C07C45/72
Filed: 1950-03-27
Abstract: Acetaldol is made from acetaldehyde in a two-stage continuous process in the first stage of which a liquid mixture comprising acetaldehyde, acetaldol and an alkaline aldolization catalyst is maintained for a period not exceeding one minute at a substantially constant elevated temperature and at a pressure such that the mixture does not boil, and in the second stage of which the mixture is maintained for a period of time which is longer than in the first stage but of such duration that the total time of reaction does not substantially exceed six minutes and at a lower temperature at which aldolization will nevertheless continue.  The reaction is stopped at the end of the second stage by the addition of acid.  The temperature for the first stage is preferably above 40 DEG  C., e.g. about 45 DEG  C., and for the second stage it may be about 35 DEG  C. so that running water may be used in both stages for cooling purposes.  So that heat may be rapidly removed the reaction mixture is passed through the first zone so that a large heat exchange surface with respect to volume is offered, e.g. narrow piping may be used, high speeds of circulation being obtained by the use of apparatus of substantially constant cross-section.  The cooling fluid, e.g. water may be enclosed about the reaction tubing.  The required pressure is preferably obtained hydrostatically by the upward travelling of the reaction mixture during the second stage. Preferably the second stage is effected in piping of the same cross-section as that used in the first stage.  In the described apparatus which consists of piping the first stage is effected in a cycle with one or more inlets for reactants and an outlet to which is connected piping for the second stage arranged so that the reaction mixture flows upwardly.  In an example, in which sodium hydroxide is the catalyst, the average time of contact in the first stage is 37 seconds and in the second is 4 minutes, 40 seconds.
Patent GB-954708-A (GB)
Title: Plastic bannister rail cover
IPC: E04F11/18
Filed: 1962-02-28
Abstract: 954,708. Bannister rail covers. A. W. CANN. March 26, 1962 [Feb. 28, 1962], No. 7722/62. Heading E1V. A bannister rail cover comprises a channel of generally C-shaped cross-section which is provided along its edges with out-turned lips, and will fit on to the bannister rail after pressure has been exerted and will remain in position gripping the sides of the bannister rail. The cover may be made of plastic material which may be transparent or coloured.
Patent GB-629555-A (GB)
Title: Improvements in variable load brakes for vehicles
IPC: B61H13/32
Filed: 1947-03-20
Abstract: 629,555. Axle trucks. SVENSKA AKTIEBOLAGET BROMSREGULATOR. March 20, 1947, No. 7734. Convention date, April 30, 1946. [Class 103 (vi)] [Also in Group XXXIV] In means for adjusting the fulcrum of a brake lever of a swivelling bogie of a railway vehicle in accordance with the loading of the vehicle so that the pressure applied to the brake-blocks is correspondingly varied, an axle-box 74 of the bogie is. pivoted at 76 to the main frame 11 and is connected by a lever 84 and links 80, 100 to the adjustable fulcrum 26 of the brake lever 24, the load on the axle-box being taken by a spring 96 abutting on the frame 11 and on a seat on the link 100 so that the displacement of the fulcrum is dependent upon the axle load. In a modification, Fig. 2, the axle-box 141 is pivoted at 142 to the bogie frame and its movements are transmitted to the adjustable fulcrum of a brake-lever arranged in the bolster 112 by a link 144, lever 143 pivoted at 147 to the frame, and linkage 150, 151, 154, the load on the axle-box being taken by a spring 148 upon which the lever 143 bears at one end.
Patent GB-435189-A (GB)
Title: Improvements relating to piston rings
IPC: F16J9/08
Filed: 1934-03-12
Abstract: 435,189. Piston-rings. KING'S PATENT AGENCY, Ltd., 146A, Queen Victoria Street, London.-(Eweis, M. ; 1, Z1, Asboh Street, Guiza, Cairo, Egypt) March 12, 1934, No. 7744. [Class 122 (i)] A piston-ring is of the section shown whereby the pressure in a peripheral recess j substantially counterbalances the fluid pressure acting in the back of the ring within the groove; the bearing pressure on the cylinder contacting portion p being provided by the pressure in the low pressure side of the ring acting on the portion n thereof.
Patent GB-522876-A (GB)
Title: Improvements in or relating to telescopic sights on guns
IPC: F41G1/38
Filed: 1939-03-10
Abstract: 522,876. Gun sights. RHEINMETALLBORSIG AKT.-GES., and ROSSMANITH, W. March 10, 1939, No. 7789. [Class 92 (ii)] A telescopic gun sight 2 is totally enclosed by a protective casing 1 on the gun or gun cradle, the sighting mark within the telescope being adjusted by a driving device 8 passing through the wall of the casing. The sight openings can be closed by removable shutters 4, 5.
Patent GB-160143-A (GB)
Title: A process for the manufacture of molybdenum metal or iron molybdenum alloys
IPC: C22B34/34
Filed: 1921-03-12
Abstract: Calcium molybdate briquettes for subsequent reduction in an electric furnace in admixture with coal and other materials, are prepared by mixing roasted molybdenite, powdered limestone and water, and drying.
Patent GB-1466024-A (GB)
Title: Method of preparing silver halide photographic materials
IPC: G03C1/005
Filed: 1975-02-25
Abstract: 1466024 Silver halide photographic material FUJI PHOTO FILM CO Ltd 25 Feb 1975 [25 Feb 1974] 7922/75 Heading G2C A method of preparing a silver halide photographic light-sensitive material comprises (a) adding to a silver halide photographic emulsion wherein at least 60 mole per cent of the silver halide is silver chloride, a water-soluble iridium compound in an amount of 10<SP>-6</SP> to 10<SP>-4</SP> mole of the compound per mole of silver halide, during the first or second ripening of the emulsion, (b) subsequently adding to the emulsion a hydroxytetracizaindene and a polyoxyethylene compound and (c) coating the emulsion in a layer on a support. "Pressure marks" particularly in the case of lithographic photosensitive materials are prevented. Suitable iridium salts and complex salts are listed. Preferably 10<SP>-4</SP> to 10<SP>-2</SP> mole of the hydroxy-tetracizaindene per mole of silver halide is used. Suitable polyoxyethylene compounds include condensation products with an alcohol, glycol, carboxylic acid amine or hexital and also copolymers and block copolymers of ethylene and propylene oxides. The silver grain size is generally 0À04 to 1 micron, preferably 0À1 to 0À7 micron.
Patent GB-513166-A (GB)
Title: Improvements relating to electrical connection means of the "plug-in" type
IPC: H01R13/56
Filed: 1938-03-15
Abstract: 513,166. Two-part couplings. SANDERS & CO. (WEDNESBURY), Ltd., and PRESTON, W. March 15, 1938, No. 7944. [Class 38 (i)] An electrical connector of the plug-in type comprises a hollow casing 5 open at one end and made of rubber or the like, plug contacts 6 secured in the closed end 5e of the casing by the engagement of shouldered portions 6b in holes in the said end, terminals 6a associated with three contacts 6 and wholly located in the interior of the casing, a thickened portion 5b of the casing within which is formed a passage 5c for the cable to be attached to the terminals 6a, clamping means 7 for the cable accommodated in recesses in the passage, and a detachable closure 9 which fits within the open end of the casing and serves to stiffen the casing. The clamping-device 7 consists of plates which are adapted to be drawn together by means of screws 8, in order to grip the cable and prevent strain at the terminals 6a when the cable is pulled.
Patent GB-609461-A (GB)
Title: Improvements relating to protecting electrical and other apparatus against shock vibrations
IPC: F21V15/04
Filed: 1946-03-15
Abstract: 609,461. Lamp supports. KYNE, C. H., SHAW, J. E., and MACLAREN, H. D. March 15, 1946, No. 8076. [Class 75(iii)] [Also in Groups XXXII and XXXVI] Revertedly bent strips of ductile metal in combination with a piece of electrical or other apparatus and a bulkhead, wall. base, deck or ceiling are capable of supporting the piece normally without distortion, but are capable of being strained beyond their elastic limit under the effect of a violent shock, the entire weight being carried by the reverted bends of the strips. The strips may be of mild steel. Under normal loading high frequency vibrations may be converted by the brackets to low frequency vibrations . In the construction shown in Fig. 2, a tray e for accumulators (not shown), is supported by revertedly bent strips d. In the construction shown in Fig. 4, a pendant electric lamp l secured to a dished metal disc j is supported by revertedly bent strips g, from a plate h, secured to a ceiling i. The securing holes in the plate j may be slotted.
Patent GB-990673-A (GB)
Title: Print hammer mechanism and assembly
IPC: B41J9/10
Filed: 1964-02-27
Abstract: 990,673. Selective printing. INTERNATIONAL BUSINESS MACHINES CORPORATION. Feb. 27, 1964 [March 28, 1963], No. 8097/64. Heading B6F. Type-band machines; hammer impression arrangements.- A printing apparatus including a type-band carrier 10, Fig. 1, having a plurality of type elements 11 movable in a continuous path on a stationary frame 12 is provided with a print hammer mechanism which comprises a print hammer 60, Fig. 4, movable from a retracted position to a printing position by an electromagnet 40, whose armature 48 is connected to the hammer by a disengageable push connector 82, the armature 48 being operative through the push connector to start the movement of the hammer which continues under its own momentum until stopped by impact at the printing station. The hammer is restored by a spring 59 located within a recess 68 of a hammer module base 52, Fig. 6. A plurality of hammers 60 are mounted within grooves 55 of the module base 52 on a common pin 57 and a plurality of the module bases 52 are mounted on an intermediate plate 29, Fig. 2, which is supported between end-plates 26, 27 and spaced from support-plates 28, 30 of a hammer module assembly and, which also supports the push connector module 75. The support plates 30, 28 support a plurality of electromagnets 40, such that the armatures 48 of two forward vertically aligned electromagnets cooperate with two short push connectors 82 through a window 80 in the connector module 75 and the armatures of two corresponding rearward electromagnets co-operate with two long push connectors. The four electromagnets are staggered in a space occupied by four hammers each magnet occupying a space corresponding to three hammers. The impact of the hammers may be adjusted by lateral displacement of a control bar 90, Fig. 10, provided with compression pad 92 against which a hammer hook 65 is arrested. The bar is provided with camming blocks 97, 98 co-operating with camming edges 105, 106 on an adjustor plate 104 laterally movable within spring-biased blocks 95, 96 and biased to the left into contact with an adjuster cam 107 by a compression spring 108 acting on a peg 110 of the adjustor plate 104. Web feeding and guiding arrangements.-A record medium 13 is advanced intermittently line-by-line between the hammers 60, Fig. 1, and ink ribbon 14 by pin feed tractors 19 over stationary guides 17, 18.
Patent GB-794461-A (GB)
Title: Improvements in or relating to governor controls for automatic transmissions for motor vehicles
IPC: F16H61/02
Filed: 1956-03-15
Abstract: 794,461. Centrifugally actuated valves. FORD MOTOR CO., Ltd. March 15, 1956 [March 25, 1955], No. 8155/56. Class 135. [Also in Group XXIV] A two-rate centrifugal valve for a motor vehicle transmission comprises a body 12, rotatable with a shaft 11, having a steped bore 21, 22, 23, containing a hollow valve 34 in which is movably mounted a weight 41, 42, connected to the valve through a spring 48 to transmit centrifugal force thereto, a retainer 46 carried by the weight 41 being engageable with the body after a predetermined movement to relieve the valve of the centrifugal force of the weight. The stepped bore in the body 12 has three axially spaced ports 31, 32, 33, communicating respectively with a pressure source, the transmission shift valves and exhaust. The valve body 12 rotates with the transmission output shaft 11 and at low speeds the centrifugal force on the weight 41, 42 is transmitted to the valve 34 by the spring 48 such that the valve moves radially outwards to establish connection between the ports 31 and 32, the pressure builds up in the annular groove 38 and acts on the enlarged portion 37 of the valve to oppose the centrifugal force and move the valve to connect ports 32, 33, thus the valve hunts to provide a pressure, lower than line pressure, for each output shaft speed .As the vehicle speed increases the weight 41, 42 moves outwards until restrained by the retainer 46 abutting the large bore 23 of the body, when the valve 34 isrelieved of the centrifugal force of the weight and the pressure increase in the line to the transmission shift valves takes place at a considerably lower rate. In Fig. 3 (not shown), the valve is shown as applied in a conventional automatic transmission having 1-2 and 2-3 shift valves controlling front and rear brake units and a rear clutch unit.
Patent GB-288174-A (GB)
Title: Improvements relating to electrical terminal connections to electrically conducting surfaces
IPC: H01R4/04
Filed: 1928-03-17
Abstract: 288,174. Metropolitan-Vickers Electrical Co., Ltd., (Assignees of Slepian, J.). April 2, 1927, [Convention date]. Couplings.-An effective electrical connection to a surface of poor conducting material such as the oxide coating in copper oxide rectifiers is obtained bv cementing to the surface by means of a solidified insulating material such as paraffin wax or a phenol condensation product a layer of finely divided conducting material such as flocculent graphite. The graphite may be applied by rubbing into a layer of solidified paraffin wax previously applied to the surface in a liquid state. Alternatively, the graphite may be sprinkled on to the surface after smearing the latter with a condensation product. A metal plate, e.g. of lead, is then pressed on to the graphite-coated surface, and the condensation product is solidified by heating.
Patent GB-737024-A (GB)
Title: Improvements relating to the production of rivets
Inventor: WITTON GEORGE ALFRED JOHN
IPC: B21H7/00
Filed: 1953-03-25
Abstract: 737,024. Rolling. STONE & CO. (DEPTFORD), Ltd., J. March 9, 1954 [March 25, 1953], No. 8269/53. Class 83 (4). Roughly preformed rivet blanks are coldrolled to size between platens 1, 2, Fig. 1, shaped to form the shank 8 and head 5. Each platen is built up from a number of sections 31, 61, 101 which separately limit the shank 8, countersunk face 9<SP>1</SP>, land 4<SP>1</SP> and the end face 4. The rivet is supported between the platens by a plate 12, Fig. 3, having one or more slots 13 bevelled at 14 to accommodate the countersunk head 5.
Patent GB-511875-A (GB)
Title: Improvements relating to spring mountings for the rear road wheels of motor cycles
IPC: B62K25/28
Filed: 1938-03-19
Abstract: 511,875. Spring frames for motor-cycles. VELOCE, Ltd., and IRVING, P. E. March 19, 1938, No. 8540. [Class 136 (iii)] In a spring frame for motor-cycles of the type in which the axle of the rear road wheel is carried by a member pivoted to the main frame and controlled by one or more interposed compression springs, the arrangement is such that the position of the springs can be adjusted for varying the moment of the force exerted by the springs on the pivotal member, according to the load carried by the cycle. In one form, the rear wheel axle is carried by a fork a, which is pivoted at d to the main frame c and is controlled by two compression springs h adjustably connected at their upper ends to a rear extension e of the main frame, such extension being supported by struts f. The adjustable, connection comprises arcuate slots g, or a series of holes. In another form, the 'rear wheel is carried by a triangular frame provided near its apex on either side with arcuate slots for the adjustable connection of compression springs, the other ends of which are connected to the main frame hear the seat pillar.