baber/WOPTO huggingface dataset:
Patent GB-158573-A (GB)
Title: Improvements in surgical or dental instruments
IPC: A61C3/10
Filed: 1921-01-27
Abstract: 158,573. Withycombe, R. M. Jan. 27, 1920, [Convention date]. Dental instruments; steel instruments with l o c a l reduced temper for adjustment.-In order to allow a steel instrument for dental or surgical purposes to be bent to suit different conditions, the temper is reduced at a convenient part of the shank and a coil or double coil may be formed in it at this point. Fig. 1 shows an instrument wherein the shank is integral with the handle and is of reduced temper between the points A, B. Fig. 4 shows a shank with a double coil and Fig. 7 a shank with a single coil. The limits between which the latter can be bent are shown by dotted lines. In a modified form, the shank is screwed to the handle.
Patent GB-396747-A (GB)
Title: New or improved disinfecting and cleansing device for telephone and like mouthpieces
IPC: H04R1/12
Filed: 1932-02-05
Abstract: 396,747. Sanitary and hygienic devices. FRASCHETTI, V., 54, Norfolk Square, Hyde Park, London. Feb. 5, 1932, Nos. 3457, (addition to 335,577, [Class 40 (iv), Telephones &c.], and 367,380), and 3199/33. [Class 40 (iv).] Relates to a modification of the disinfecting device for telephone and like mouthpieces described in the parent Specification in which a cover is hingedly or pivotally mounted on the mouthpiece and carries a hollow disinfecting body adapted to be rotated by operating means provided externally of the cover, the hollow body being provided with means on its periphery for wiping the interior of the mouthpiece. According to the invention, the hollow body is carried by the cover in such a manner as to be slidably as well as rotatably manipulated by the external operating means. Fig. 2 shows one construction in which the cover 1 is formed with a central boss 2 which serves as a bearing guide for the hollow body 3 formed with a recess 4 to receive the boss 2. A spring-controlled spindle 5 provided with an operating knob 6 passes through the cover 1 and body 3 and is fixedly secured to the latter at its inner end. The spindle is preferably hollow and perforated and fitted with a filler plug to facilitate charging the wadding or similar absorbent material 14 in the body 3. Wiper strips 7 partially embedded in the body are continued around the remote end thereof to form a wiping medium for the usual perforated disc at the base of the mouthpiece. In order to cleanse and disinfect the mouthpiece the knob 6 is pushed in and turned causing the body 3 to wipe the inside of the mouthpiece. Figs. 3 and 5 show a modification in which the body 3 is slotted to receive a pair of cam members 11 which are pivoted at 12 on the inner end of the spindle 5 and are shaped so that when the spindle is pushed and rotated they will reach every crevice of the surface to be cleansed. Each cam consists of a pair of plates with a slot 13 therebetween which accommodates an absorbent pad receiving disinfectant from the material 14 or from wicks or tapes located in the body 3. A spring (not shown) is interposed between a collar 22 on the spindle 5 and the front of the body 3 so that when the spindle is pressed in the body 3 is first moved into contact with the mouthpiece, further movement of the spindle compressing the spring and operating the cams. An aperture 17 in the spindle is adapted to register with an aperture 18 when the spindle is pushed in so as to allow disinfectant which has been previously injected into the spindle to pass out into the body 3. The disinfectant may be injected through a ball valve 20 and the cams may be returned to their normal position by a spring 21. In both constructions, the device may be hinged to the mouthpiece of a telephone handset and counterbalanced so as to open or close automatically as the handset is used or replaced.
Patent GB-663389-A (GB)
Title: Improved means for jointing metal members to members of laminated material
Inventor: BISHOP DONALD ROLAND
IPC: D03J5/00
Filed: 1949-02-09
Abstract: 663,389. Assembling force fits. HORDERNRICHMOND, Ltd. Feb. 9, 1950 [Feb. 9, 1949], No. 3582/49. Class 83 (iv). [Also in Groups IX and XXV] To prevent splitting of laminated wooden shuttle for looms when metal tips are driven in, a plug of wood, hard rubber, &c. is inserted into a bore in the material with a light friction fit and may be secured by glue, dowels, pins, or screws. The insert is then driven into the plug which is strong enough to receive it without splitting, thus relieving the laminated material from bursting stress. The shuttles are cut from boards formed of wooden laminae 1, united by thermoplastic or thermosetting resin, and are bored to receive the plugs 2 and the metal tips 4 with shanks 3 are driven into holes drilled in the plugs. According to the Provisional Specification, the method of construction is not limited to shuttle and the inserts need not be non-metallic.
Patent GB-1361752-A (GB)
Title: Direct current to direct current converter
IPC: H02M3/337
Filed: 1972-01-26
Abstract: 1361752 Chopper circuits WESTINGHOUSE ELECTRIC CORP 26 Jan 1972 [24 Feb 1971] 3600/72 Heading H2F  A D.C.-D.C. chopper converter has means whereby excessive currents through its switching transistors due to gating pulse overlap are prevented and comprises a source 10, 12, the positive side 10 of which is connected via switching transistors 14, 16 to opposite ends of a primary 18 of an output transformer 20, the secondary 32 of which is connected across a fullwave rectifying bridge 34 to an output via smoothing capacitor 36, a centre tap on the primary 18 being connected to earth via the primary 24 of a flyback transformer 26, one end of the secondary of which is also grounded and the other end is connected via diode 38 to the positive side of capacitor 36. Resistor 28 and capacitor 30 are preferably placed in shunt with the primary 24. In operation, D.C. is produced at E 0  and capacitor 36 is supplied from the bridge 34 whenever one of transistors 14, 16 is ON, diode 38 being reverse biased owing to the potential built up on secondary 40 and during changeover, the inductive energy stored in transformer 26 is discharged via diode 38 to the capacitor 36. Excess currents owing to overlap of switching pulses from control 22 causing effective shorting of the source, or to reverse currents in the diodes of bridge 34 during switching are prevented by the inductance 24. Several modifications, Figs. 2-4 (not shown), are described where the primary winding of the output transformer is not tapped to earth and where currents are reversed through the whole winding in operation. In Fig. 2, four switching transistors are employed and are gated in pairs, and are arranged in an inverting bridge circuit, the primary of the output transformer being placed across the A.C. terminals and the primary of the flyback transformer connected between one of the D.C. terminals and earth. Four transistors are again employed in a bridge configuration in Fig. 3 and the ends of the primary of the output transformer are connected to respective centre taps in respective primaries of the flyback transformer which form the A.C. terminals of the bridge. Two of the switching transistors are replaced by capacitors in Fig. 4 and a single primary of the flyback transformer is provided.
Patent GB-940953-A (GB)
Title: A composition comprising products obtainable by condensates of dicyclopentadiene and phenols as antioxidant
Inventor: MINGASSON GEORGES RAYMOND HENR
IPC: C07C43/215
Filed: 1960-02-02
Abstract: A condensation product containing a free phenolic hydroxy group and obtainable by condensing dicyclopentadiene at a temperature not exceeding 150 DEG C. with a phenol, the nucleus of which is unsubstituted or is substituted by halogen atoms, or alkyl or alkoxy groups, at least one of the 2-, 4-, and 6-positions being unsubstituted, is used as an antioxidant for natural or synthetic rubber compositions (see Division C3). Preferably, one molecular proportion of phenol is condensed with one molecular proportion of dicyclopentadiene.  Specified phenols include o-, m-, and p-cresol, 2.4-dimethyl phenol, p-chlorophenol, and mixtures thereof. The condensation is carried out under conditions such that the dicyclopentadiene does not polymerize.  Preferably, a Friedel-Crafts catalyst such as boron trifluoride, or a complex containing boron trifluoride is present.  If desired the desired product may be obtained in two stages, the first comprising condensation of the phenol with the dicyclopentadiene to form an ether, and the second comprising isomerisation of the ether to form the free phenolic condensation product.  In an example, dicyclopentadiene is run dropwise into a solution of p-cresol in toluene containing as catalyst a complex of boron trifluoride and acetic acid.  The temperature is raised to and maintained at 45 DEG C. for 4 hours. Water is added and the toluene layer is poured off, washed and dried. The toluene is driven off and the residue is distilled and fractionated.  The compound 2-dicyclopentenyl-4-methyl-phenol is obtained.  The compound p-tolyl dicyclopentenyl ether is also obtained. The ether compound is isomerised to form the phenolic compound by dissolving it in toluene and heating for 4 hours at 40 DEG C. in presence of a BF3 catalyst.  Other examples are given.
Patent GB-123601-A (GB)
Title: Improvements in Temperature Control Devices for use with Carburetters or the like.
IPC: C10J1/00
Filed: 1918-03-02
Abstract: 123,601. Paterson, A. D., and Oil Fuel Economizer, Ltd. March 2, 1918. Spray carburettors.-A temperature-control device for carburettors is a separate unit applicable to existing carburettors, and comprises means for controlling hot and cold air supplies in such a manner that the temperature of the resulting mixture varies in inverse manner to the degree of throttle opening. The device is shown as applied to a Ford carburettor 60 and comprises a valveless inlet 67 for hot air and an inlet 68 for cold air provided with a butterfly valve 69, the control arm 71 of which can be connected by a rod 73 to the arm of the carburettor throttle 64. The rod 73 is slidable in a boss 72 on the arm 71 and is fitted with a stop 75, so that the valve 69 opens after the throttle 64. A second rod 78, slidable in the stop 75 and fitted with a stop 79, is connected to a lever 76 acting on the stem of a fuel-control needle valve. Specification 120,739 is referred to. The Provisional Specification states that the hot-air supply may be drawn from a jacket surrounding the exhaust pipe and leading to a return tube passing through the exhaust pipe.
Patent GB-922036-A (GB)
Title: Electromagnetically released spring brake
IPC: F16D51/20
Filed: 1961-02-01
Abstract: 922,036. Drum brakes. W. BINDER, trrading as BINDER MAGNETE K.G.]. Feb. 1, 1961 [Feb. 6, 1960], No. 3854/61. Class 103 (1). In a spring-actuated and electromagneticallyreleased drum brake, a br ke shoe forms part of he magnetic circuit. A drum brake has shoes 5 with linings 7 applied to the interior of a drum 1 by a compression spring 6. An electromagnet 8 having two pairs of poles 10, 11 is energized to release the brake, in which condition the magnetic circuit is completed through the shoes. In other embodiments the applying spring is a tension spring, or only one brake shoe may be used.
Patent GB-1000228-A (GB)
Title: Radio signal receivers
IPC: H03D1/22
Filed: 1963-01-30
Abstract: 1,000,228. Stereophonic receivers. RADIO CORPORATION OF AMERICA. Jan. 30, 1963 [Feb. 16, 1962], No. 3890/63. Heading H4L. A stereophonic receiver comprising a tuned circuit for selecting the pilot signal (used in U.S. standard stereophonic transmission), and an oscillator, for developing a voltage whose frequency is harmonically related :o the pilot signal, coupled to a detector circuit for demodulating the subcarrier sidebands, is characterized in that the oscillator circuit is only activated while the pilot signal is present. One embodiment of the invention is also disclosed in Specification 1,000,229 (see Fig. 1) in which the pilot frequency is doubled in a full wave rectifier 39 and the resulting 38 kc/s. signal used to provide on-bias for oscillator tube 48. Several further embodiments are herein described:- (a) Half wave rectification of the pilot signal is used to control the grid bias of the oscillator 48 which may oscillate at 19 or 38 kc/s., Fig. 5 (not shown). (b) A further tube 126, Fig. 6, is inserted with its grid connected to the junction of diodes 42 and 43 and its cathode connected to ground through a common resistor with the cathode of oscillator tube 48. In the absence of the pilot signal this tube acts as a cathode follower and maintains tube 48 at cut-off. On receipt of the pilot signal the tube 126 is cut off and a constant on-bias applied to the grid 48 independent of the signal amplitude. (c) In the absence of stereophonic transmission the phase splitter tube 74, Fig. 7, is biased to cut-off by resistor 130 between the cathode and + B terminal (see Fig. 1). When the pilot signal is received part of the output of oscillator 47 is rectified and fed directly to the centre tap of winding 58 to provide an on-bias for phase splitter 74. (d) An alternative automatic muting control for phase splitter 74 is provided. In this case the centre tap of winding 58, Fig. 8, is returned to ground through subcarrier sideband filter 66 and the values of the R-C components is circuit 57 are chosen so that the two networks are still balanced for A.C. but sufficiently unbalanced for D.C. to provide the required cobiasing voltage.
Patent GB-585300-A (GB)
Title: Improved protectors for boots and shoes
IPC: A43C13/02
Filed: 1945-02-16
Abstract: 585,300. Boot and shoe protectors. MUREX, Ltd., and SAWYER, S. T. Feb. 16, 1945, No. 3976. [Class 17 (iii)] [Also in Groups II and XXII] Protectors for boots and shoes comprise a support adapted by integral or separate means to be attached to the sole or heel and one or more wear-resistant elements of refractory carbide having a hardness of Vickers Pyramid Number of 800 or over, such as cemented tungsten carbide, distinct from but firmly secured to the support. The support is of iron, steel or alloy steel of low tthermal expansion and the wear-resistant element may be secured to it by brazing, welding, riveting or sintering in situ. The support may take the form shown, comprising a spiked attachment shank 1 with a spigot 4 projecting above shoulders 3 thereon. The wearing element 5 is in ring form fitting over the spigot. Alternatively, the wearing element may be secured as a cap or pad to the fiat top of a headed shank support, or in a recess in the head of a shank support, or as pads on a plate shaped to cover a portion of the heel or sole and provided with holes for its attachment by nails or screws.
Patent GB-420412-A (GB)
Title: Improvements in or relating to electrical plate-condensers
IPC: A61N5/00
Filed: 1934-02-07
Abstract: 420,412. Securing condenser-plates on shafts. BOSCH AKT.-GES., R., 4, Militõrstrasse, Stuttgart, Germany. Feb. 7, 1934, Nos. 3984, 3985, and 3986. Convention dates, Feb. 15, 1933, April 4, 1933, and Dec. 14, 1933. [Class 80 (ii)] [See also Groups XXXV and XXII] The rotor or stator plates b of an electrical condenser are secured by forming openings in them of a shape similar to that of the cross section of the bolt or spindle a to which they are to be secured but slightly smaller, and forcing them in spaced relationship into engagement with the spindle. The sole perceptible alteration in form of a plate is an enlargement in the plane of the plate. A slot d may be formed in the plate to allow for this enlargement. Bolts or spindles of insulating, e.g., ceramic, material may be used and where conductive continuity is desired the material may be metallized or a metal strip may be forced simultaneously with the spindle through the holes in the plates. The spindle may be of oval or angular cross-section, conical, or longitudinally or helically slotted. In the last-mentioned case the push-fitting may be accompanied by a relative rotary movement.
Patent GB-537319-A (GB)
Title: Improvements in or relating to hydraulic piston controlled reciprocable slides for machine tools
IPC: B23Q5/26
Filed: 1940-03-04
Abstract: 537,319. Hydraulic transmission of power. AKT.-GES DER EISEN-UND-STAHLWERKE VORM, G. FISCHER, March 4, 1940, No. 4026. Convention date, March 21, 1939. [Class 69 (ii)] A tool-slide is operated hydraulically by a piston mounted in a cylinder having an outlet controlled by a valve which is formed with a piston-part of larger diameter and is so arranged that when the piston is arrested at the end of a forward stroke by a stop. the pressure in the cylinder rises, the valve is opened, and the piston is caused to make a return stroke. In the apparatus shown in the Figure, the tool-slide is connected by a rod 3 to a piston 2 which is mounted in a cylinder 1 and abuts on a plunger 4. The cylinder communicates with a supply-line 7, a port 14, and another port controlled by a valve 9 which is provided with a piston-part 10 controlling a passage 12 leading to the port 14 and an outlet 13. The supply-line communicates with a bore 5 containing the plunger 4. At the end of a forward stroke, the piston is arrested by a stop 16, the pressure in the cylinder rises, the valve is opened, and the plunger causes the piston to make a return stroke. The piston is caused to make another forward and return stroke by opening momentarily a valve 17, and thereby opening a byepass 18 to permit return of the valve 9. In a modification, Fig. 2 (not shown), the plunger is omitted, and the cylinder 19 is provided at the rear end with a port 28 controlled by a piston-valve 30 which is mounted in a passage 27 leading to the main control-valve 24. Liquid is supplied by a line 22 and during the forward stroke of the piston, liquid at the rear thereof exhausts through the port. When the piston is arrested, the valve 24 is opened in the above-described manner, the valve 30 is raised, liquid passes through the port 28 into the rear of the cylinder, and the piston makes a return stroke. The piston is caused to make another forward and return stroke by opening momentarily a valve 32 controlling a port 31.
Patent GB-289579-A (GB)
Title: Improvements in or relating to luggage carriers for motor road vehicles
IPC: B60R9/00
Filed: 1927-02-14
Abstract: 289,579. Coram, H. C. Feb. 14, 1927. Luggage carriers.-A luggage-carrier for motor vehicles comprises a movable base or platform A and supporting brackets B therefor formed with horizontally projecting arms B<1> upon which the platform rests when in use and with vertically arranged guides or slotted members B<4> in which the platform is supported vertically when the carrier is not in use. Associated with the carrier is a collapsable box or container adapted to be erected on the platform or to be collapsed and folded with the platform into the vertical position. The platform may be constituted by an open metal grid to which the container C is secured or, as shown, may comprise two parallel bars A secured to the bottom C' of the container, the forward bar A having at its ends studs a<1> engaging offset, portions b<1> at the upper ends of the guides B<4> and the rear bar A having similar studs a adapted to rest in notches b in the arms B<1>. By swinging the platform to a vertical position, it can then be lowered in the guides B<4> with the studs a resting in recesses b<2>, Fig. 6, in the brackets B. Forwardly extending arms B<3> of the brackets may be secured to the vehicle body or slide in longitudinal guides formed thereon. The container comprises, in addition to the bottom C', side walls C<2>, C<3> hinged to the bottom, removable front and rear walls C<4>, C<5>, and a lid C<6> provided with snap catches D adapted either to co-operate with removable bars D<2>, Fig. 4, to retain the container in its erected condition or to engage slotted lugs D<1> on the bottom C<1>, Fig. 4, to retain the container in the collapsed position, in which the walls C<2> - C<5> and the bars D<2> are disposed between the lid and bottom.
Patent GB-850018-A (GB)
Title: Production of gibberellic acid
IPC: C12P27/00
Filed: 1957-02-06
Abstract: In the process for the preparation of gibberellic by cultivation of an active strain of Gibberella fujikuroi (Fusarium moniliforme) in an aerated nutrient medium or media, claimed in Specification 783,611, the temperature of the medium is maintained within the range 27,5 DEG to 30,5 DEG  C., and preferably within the range 28,5 to 29,5 DEG C., while gibberellic acid is being produced.  This process may also be applied to the multi-stage process in which the final stage, carried out in an aerated unbalanced nutrient medium, is devoted substantially to the production of gibberellic acid from mycelium grown in a preceding, separate, active growth, nutrient medium claimed in Specification 838,039, or to the process in which carbon availability is maintained during the gibberellic acid production stage by adding a source of carbon to the medium, claimed in Specification 838,033.  An example is given.
Patent GB-213729-A (GB)
Title: A ready method of mounting or binding photographic or other prints, filing documents and the like
IPC: B42D1/10
Filed: 1923-09-20
Abstract: 213,729. Talbot, E. C., and Redstone, A. W. Sept. 20, 1923. Bookbinding.-In a gummed-stub album, each stub-leaf b is bent back upon itself to form a narrow fold b', which is attached by adhesive to the upper surface of the stub below. The prints or documents d to be bound are attached to the upper surface of each stub-leaf, which is coated with adhesive. The fold of the lowest leaf is attached by adhesive to the cover a, and a gummed strip c, attached to the uppermost leaf, is stuck to the backs of the stubs and to the cover. The stub-leaves may be alternated with plain leaves or strips.
Patent GB-745984-A (GB)
Title: Improvements in load handling apparatus
IPC: E02F3/42
Filed: 1954-02-11
Abstract: 745,984. Load-handling machines. DROTT, E. A. Feb. 11, 1954, No. 4091/54. Class 78 (3). In a load-handling machine including a pair of arms 9 pivoted at their rear ends on a vehicle and extending ahead of the vehicle and carrying a load-handling member on their forward ends, a hydraulic jack 14 is connected between each arm and the vehicle for raising and lowering the arms, and shocks in the arms are absorbed by connecting the cylinders to one another and to a hydraulic cylinder 40 having a spring-loaded piston 41 acting in opposition to the fluid pressure in the jack cylinders. As shown, a bucket 11 is pivoted at 12 between the arms 9 which are pivoted at 10 to brackets 8 carried by the track frames 7 of an endless track vehicle. The bucket is tilted by a hydraulic cylinder 20 whose piston is connected by link 22 to the bucket. The lifting cylinders 14 are pivoted at 15 to either brackets 8 or the vehicle chassis 6 and are interconnected by pipes 32 and 34 connected to pipes 33, 35 leading to a reversing valve 30 of known type so that pressure fluid can be supplied from a pump 26 to either end of both cylinders simultaneously. Pipe 42 connects the loadlifting supply pipe 32 to the cylinder 40. The spring loading of piston 41 can be set at a pre. determined minimum by adjustment of a sleeve 46 slidable in the upper end 44 of cylinder 40 and internally threaded to travel on a screwthread on the piston-rod 45, sleeve 46 being turned to draw up the piston and compress the spring 43 with the head 48 of the sleeve engaging the end 44 of the cylinder.
Patent GB-1397873-A (GB)
Title: Ophthalmic nutritional health food
IPC: A23C11/06
Filed: 1973-01-26
Abstract: 1397873 Food preparations S C EVANS 14 Sept 1973 [26 Jan 1973] 4093/73 Heading A2B A food preparation comprises a mixture of dried milk powder, dried brewer's yeast, and glucose, and optionally other nutrients, minerals, and vitamins. The preparation is valuable in the treatment of eye disorders.