baber/WOPTO huggingface dataset:
Patent GB-724966-A (GB)
Title: A process of enriching yeast with therapeutically acting substances
IPC: C12N1/04
Filed: 1953-03-12
Abstract: In enriching yeast with therapeutically active substances by cultivating the yeast in a fermentation liquid containing such substances, the period of fermentation is prolonged to extend over more than one yeast generation.  Yeast may be so enriched with arsenic to a concentration of 20 mg. per 100 ml. of cell liquid by addition to the fermentation liquid of arsenious acid by degrees in equal or increasing amounts up to a concentration of 1 mg. in 100 ml. of fermentation liquid.  In so enriching yeast with copper, metallic copper or a copper salt is added to the fermentation liquid.  Further examples are of enrichment of yeast with synthetic salicylic acid by adding this substance to the fermentation liquid, and of enrichment with the active principles of Atropa belladonna, colchicum autumnale, Nux vomica, Anemone pulsatilla and Allium sativum by addition of these plants in the fresh or dried condition, or the juices from the plants, to the fermentation liquid.  The medicament produced may be preserved in alcohol or may be spray dried at below 50 DEG C.
Patent GB-313509-A (GB)
Title: Improvements in and relating to the control of dynamo electric machines
IPC: H02J7/16
Filed: 1928-03-06
Abstract: 313,509. Midgley, A. H. March 6, 1928. Charging batteries; supplying consuming devices from variablespeed generators.- Dynamos associated with a battery and load, for example, on vehicles, are controlled by a thermostatic switch which opens to insert a resistance in the field circuit of the dynamo when the maximum charging voltage is reached, the switch remaining open although the battery voltage falls to normal due to the decrease in the charging current. The resistance is cut out of the field circuit when lamps or other loads are switched on. The switch may comprise two thermostatic arms a, b, one a having two heating coils e, f. The coil f is connected across the dynamo terminals and, when the battery is fully charged, moves the arm a so that contacts on thearms a, b separate and a resistance h is introduced into the field circuit of the dynamo g. The coil e is in series with, or constitutes, the resistance h and maintains the arms separated even when the battery voltage drops. The switch i<1> closing lamp circuits l cuts the resistance h out of the dynamo field circuit so that the full output is obtained from the dynamo when the lamps are on. In modifications, this result is obtained by a third heating coil in series with the lamp switch and acting on the arm b or on a third thermostatic contact arm connected at its fixed end to the fixed end of the arm b. Reference has been directed by the Comptroller to Specification 288,363.
Patent GB-707223-A (GB)
Title: Improvements in cathode ray tube electrode
IPC: H01J29/02
Filed: 1950-03-21
Abstract: 707,223. Cathode-ray tubes. DU MONT LABORATORIES, Inc., A. B. March 21, 1950 [May 6, 1949], No. 7037/50. Class 39(1) In a cathode-ray tube a planar electrode 11 having projections for mounting it on support rods 15, fastening members such as split eyelets 13 being provided on one side of the electrode, has the edges of the electrode, including the edges of the projections, bent back to shield the fastening members. Corona discharges from sharp edges are thereby prevented, the electrode being for instance, the second grid electrode of the electron gun and located adjacent a space across which a high voltage exists. As shown, the edges 17 of apertures in the electrode projections through which the support rods 15 pass are bent inwardly into the upper open ends of the split eyelets 13. The electrode 11 has a central cup-shaped portion 12. Instead of eyelets the fastening members may consist of straps 16, Fig. 4, which grip the cup-shaped portion 12 of the electrode and the support rods 15.
Patent GB-421870-A (GB)
Title: Improvements relating to ships' hatchways
IPC: B63B19/12
Filed: 1934-01-22
Abstract: 421,870. Ships' hatches. MARINE PROPULSION, Ltd., AYRE, A. L., and AYRE, W., The Shipyard, Burntisland, Fife. Jan. 22, 1934, No. 7073. Divided out of 421,865. [Class 113 (i)] In ships' hatches in which a clear hatch opening is provided by providing a ledge for the support of the hatch beam ends at the top of the hatch coaming, the outer framing of the coaming defining the edge of this ledge, various bearing parts for the ends of the hatch beams are provided to ensure their correct positioning. This may be achieved by fitting a bulb angle 16 as shown in Fig. 3, to the top of the hatch coaming. The hatch beam is further positioned by snugs 20 on the bulb angle 19 which constitutes the frame of the coaming. Alternatively, a single snug may be provided to take in a slot in the end of the beam. The beams may be converted into cross-ties by providing them with projections 26 which engage with the side of raised bearing. Alternatively the bearing parts are formed by separate seat members mounted in the ledge 16. This ledge may be slightly recessed for the reception and positioning of the hatch beam end.
Patent GB-454764-A (GB)
Title: Appliance to prevent draughts from passing below doors, windows and the like
IPC: E06B7/20
Filed: 1936-03-09
Abstract: 454,764. Draught - excluders for doors and windows. DOUGLAS, A. H., 16, Place du Temple Neuf, Strasbourg, Bas-Rhin, France. March 9, 1936, No. 7124. Convention date, March 11, 1935. [Class 20 (iii)] A sliding-bar draughtexcluder of the kind carried by screws 4 and inclined slots 8 and raised by springs 6 when the door or window is opened, has the springs housed in borings 7 coaxial with the screw slots and of diameter larger than the width of the slots. Plugs 9 close the borings at the lower ends. The Specification as open to inspection under Sect. 91 comprises also modifications in which the excluder is carried by the ends of coiled springs attached to the door at the other ends and in which the return springs are housed in recesses away from the screw slots. This subject-matter does not appear in the Specification as accepted.
Patent GB-659272-A (GB)
Title: Portable hydraulic riveter for seam caps and the like
IPC: B21J15/20
Filed: 1949-03-16
Abstract: 659,272. Riveting. CHICAGO PNEUMATIC TOOL CO. March 16, 1949, No. 7180. Convention date, May 11, 1948. [Class 83 (iv)] A portable hydraulic riveter, more particularly adapted for seam cap riveting on railway car roofs, comprises a hollow yoke 18 having a pair of spaced jaws, a cylinder 21 maintained within the body of the yoke and adapted for connection with hose couplings 27, 33, a piston 35, a reciprocable rivet set holder 53, a pivoted rocker arm 41 contacting at one end the piston-rod 37 and at the other the rivet set holder 53, a dolly 69, a suspension means 93 for said yoke, a pressure-pad arrangement positioned on one jaw, and control means affixed to said yoke for control of a hydraulic power unit coupled to the riveter which is operable to move said piston. The end of the pistonrod 37 is bifurcated to receive one end of the rocker arm 41, and grooved to receive the ends of a pin 43 retained in the arm. The pin contacts the rear side only of the grooves 42 so that it is not loaded during the power movement of the piston. The arm 41 is pivoted by means of a pin 45 mounted in needle bearings in the yoke and its other end is received in the bifurcated end of the reciprocable set holder 53 and held by a pin and groove connection. On the opposite jaw of the yoke is a pressure pad arrangement, Fig. 6, comprising a sprung toggle lever system and a pressure-pad 59, having parallel sided extensions 73 which slidingly engage flat surfaces on the yoke jaw. Adjustment screws 64 maintain the centre pins 67 of the toggle at the required distance from the centre of the yoke to obtain the desired initial pressure of the pad. The dolly 69 is locked in a bore 71 in the jaw. The riveter is suspended by the arm 93 connected to the yoke by a trunnion arrangement the amount of swivel of which is limited by stops 101, 102. In operation, pressing the trigger 87 initiates supply of pressure oil to cause the piston 35 to move rearwards, whereby, since the set 57 abuts the work, the yoke 18 is constrained to move rearwards and the pressure-pad 59 squeezes the work, i.e. the seam cap assembly, Fig. 1, until the dolly 69 contacts the rivet. If the dolly and rivet are correctly aligned as observed through the slot 104, pressure is maintained on the trigger and oil and mechanical pressure build-up and heading begins. When the heading is completed, the pressure builds up to such a value as to automatically reverse the power plant and low pressure oil returns the piston 35. In a modification, Fig. 12, a set holder 112 is slidable within a liner 109 and may be actuated by a rocker arm as in the embodiment above. The pressure pad 123 slidably engages ribs on the side of the yoke jaw 106, and the toggle is adjusted by the screw 134 so that the pressure pad firmly engages the work 117 just before the dolly 118 engages the shank end of the rivet 116.
Patent GB-344664-A (GB)
Title: Improvements relating to the slideways of grinding machines and other machine tools
IPC: B23Q11/08
Filed: 1930-03-05
Abstract: 344,664. Grinding-machines &c. CHURCHILL MACHINE TOOL CO., Ltd., Broadheath, near Manchester, and ASBRIDGE, H. H., Claremont, Washway Road, Ashton-on-Mersey. March 5, 1930, No. 7263. [Class 60.] Slides; protecting parts of machines.-The slideways of tables &c. of grinding-machines and other machine tools are formed with a recess f and a gap e between the bearing surfaces to accommodate a guard plate j, which extends the length of the machine to protect the bearing surfaces g, h of the bed from dirt &c. Several modifications are described.
Patent GB-127372-A (GB)
Title: Improvements in Variable Speed and Reversing Gearing.
Inventor: LINDEN GUSTAF
IPC: F16H63/30
Filed: 1918-05-01
Abstract: 127,372. Linden, G., Hojer, A. G., and Lundin, E. O. G. May 1, 1918. Variable-speed epicyclic gearing.-Four sunwheels 3 - - 6 are secured to the driving-shaft 1 and gear with planet wheels 7, 8, 9, 11 gearing, one through idlers 12, with toothed annuli 20 - - 23, which can be separately braked to give three speeds and a reverse. The planet-carrier 15, 18, 19 is secured to the driven shaft 2. All the toothed members are provided with rolling-surfaces of pitch-circle diameter. The brake bands 24 for braking the annuli are each formed in two parts with slotted ends engaged by eccentrics 31 formed on a single operating-shaft 29, the eccentrics being arranged to allow intervals of freedom between the operations of successive brakes.
Patent GB-216249-A (GB)
Title: Trolley cars for perambulators, invalid carriages and the like
IPC: B62B1/00
Filed: 1923-03-14
Abstract: 216,249. Field, E. D. March 14, 1923. Rest-bars.- One end of a trolly for baby carriages &c. is provided with feet or legs b which may be of adjustable height.
Patent GB-575878-A (GB)
Title: Improvements in driving arrangements in spinning and twisting machines
IPC: D01H1/241
Filed: 1944-04-20
Abstract: 575,878. Spindle &c. driving and stop arrangements for spinning &c. machines. BOYD, Ltd., J. & T., and BOYD, H. A. April 20, 1944, Nos. 7310 and 24953. [Class 120 (ii)] In a spinning &c. machine incorporating an intermediate whorl 23 interpolated between the spindle 3 and the main driving drum 1, the whorl 23 being driven by a primary tape 2 and itself driving the spindle 3 through a secondary tape 2a, the intermediate whorl 23 is carried by a movable bracket 21 which may be operated either manually or automatically on thread failure, to move the whorl 23 nearer the spindle to slacken the secondary tape 2a and stop the spindle while allowing the primary tape 2 to continue running. The bracket 21 in swinging towards the spindle and upwardly, brings a dead collar 24 under the tape 2a to bring same to rest. Both tapes 2, 2a are tensioned, in normal operation, by a single weighted pulley 4. In a modification, Fig. 3, the intermediate whorl 23 is carried by a weighted lever 30 pivoted at 31 to a weighted bell-crank lever 32, 33 so that the whorl 23 applies tension to both the primary and secondary tapes 2, 2a. Specification 113,687, [Class 120 (ii)], is referred to.
Patent GB-500679-A (GB)
Title: Improvements in and relating to screw propellers
IPC: B64C11/12
Filed: 1938-03-10
Abstract: 500,679. Screw propellers. BUGATTI, E. March 10, 1938, Nos. 7534 and 7535. Convention dates, March 10, 1937 and Feb. 28, 1938. [Class 114] A screw propeller wherein each blade root and a blade carrier on the shaft have interspaced projections which are attached to one another by means of a plastic and resilient material such as rubber composition between these projections which serves as the sole means for retaining the blade in position. The boss W has sockets'V in which are accommodated the roots U of a blade H. The root U has a metal sleeve Q which is provided with key-like projections R and the interior of the socket V has corresponding projections between which is disposed a rubber sleeve T. The projections S and R alternate both in the direction of the length of the blade and around the periphery. The sleeve part Q may be made in two parts to facilitate assembly. In an alternative form the blade root and the inner part of the socket have screw-thread blades between which is a space to accommodate a thin layer of rubber, but in the event of the rubber wearing there is sufficient interengagement of the threads to prevent the blade being drawn out by centrifugal force. Where the blade root is not of circular section but of streamline form then the screw surfaces are replaced by parallel grooves without pitch. The rubber interlayer may be moulded and vulcanized in position and may then be used to resist torsion also in variable pitch propellers. Specification 396,578, [Group XXXIV], is referred to.
Patent GB-782645-A (GB)
Title: Improvements in or relating to electric motor control systems
IPC: H02P3/06
Filed: 1956-03-12
Abstract: 782,645. Control of D.C. motors. WESTING- HOUSE ELECTRIC INTERNATIONAL CO. March 12, 1956 [March 21, 1955], No. 7606/56. Class 38 (3). [Also in Group XXXV] A D.C. motor 22, which may drive a reciprocating machine tool, has its field winding 25 excited from A.C. lines 1, 3, through transformer T and rectifier R when a relay MX is energized. The relay drops out if a stop switch PBI is actuated or there is a voltage failure, so that resistor 47 is short-circuited and the input terminals 39, 41 of the rectifier are now connected across the armature terminals of the motor for continued excitation of the motor field winding. Since the rectifier R is of the full-wave type, the polarity of the voltage applied to the field winding will always be the same, and the flux in the winding will be in a direction to provide dynamic braking of the motor regardless of the sense of rotation immediately before relay MX dropped out. In the event of power failure, and during the short interval elapsing before relay MX drops out, the field winding 25 is short-circuited through the rectifier R and the rate of decay of flux is reduced so that braking takes place during this transition period. The armature of the motor is supplied from a constant-speed generator 14 which is driven by a three-phase motor 13 having starting resistors 7, 9, 11 in its primary circuit. The field windings 19, 21 of the generator may be excited from a control circuit 27 so as selectively to vary the polarity and magnitude of the output voltage of the generator.
Patent GB-398512-A (GB)
Title: Improvements in or relating to television and like systems
IPC: H04N5/073
Filed: 1932-03-15
Abstract: 398,512. Television. BANKS, G. B., WILSON, J. C., and BAIRD TELEVISION, Ltd., 133, Long Acre, London. March 15, 1932, No. 7654. [Class 40 (iii).] In a television system in which a sound accompaniment is transmitted with the picture, but over a separate channel, the signals for synchronization of the picture receiving apparatus are transmitted over the sound channel. The synchronizing signals, which may be produced by a small electric generator on the shaft of the scanning device, are, at the receiver, filtered out and applied to synchronize the reconstituting device. The synchronizing signals may be fed in parallel to the sound reproducing device through a rejector circuit, eliminating the synchronizing impulses, and to a tuned circuit incorporating a power valve in the output circuit of which are the field coils of a phonic-wheel motor. Alternatively the synchronizing signals may be used to control a relaxation oscillator which drives the scanning apparatus of the receiver. The synchronizing signals may contain two components for effecting the scanning movements in a cathode-ray receiver. The synchronizing frequency may form the carrier for the sound signals.
Patent GB-605456-A (GB)
Title: Improvements in or relating to synthetic hydrocarbons, lubricating oils derived therefrom and manufacture of the same
IPC: C10M105/06
Filed: 1945-03-27
Abstract: Benzene or a homologue is alkylated so as to introduce two or more alkyl groups having at least two carbon atoms and is reacted with a polyhalogenated saturated aliphatic hydrocarbon having not more than four carbon atoms in the presence of aluminium chloride. The final product is distilled and the recovered starting materials may be used again; the residue obtained is a lubricating oil.  In the example, benzene and ethylene are reacted together in the presence of aluminium chloride, then dichlorethylene is added and the mixture refluxed.  The product is distilled to separate a lubricating oil. Specifications 428,410 and 555,081 are referred to.  Samples have been furnished under Sect. 2 (5) of products obtained by condensing di-chlorethylene with di- and triethylbenzene.
Patent GB-551494-A (GB)
Title: Improvements in or relating to torque transmission systems
IPC: H02K7/00
Filed: 1941-08-19
Abstract: 551,494. Transmitting mechanical power and motor power plant. DEAN, J. D. Aug. 19, 1941, No. 7763. [Class 38 (iv)] (Also in Group XXVII An internal combustion engine 34, Fig. 3, or other prime mover, coupled to a propeller shaft 10 through a synchromesh or like free-wheel coupling 37 is first run below full speed, with the coupling slipping, driving an electrical generator 36 whereby power is supplied to a motor 38 driving the shaft through gearing 39, 40. When the motor speed equals the engine speed the coupling 37 is automatically locked in engagement and the engine is then accelerated to 'full' speed, taking up the drive direct. A second engine 35 coupled to the shaft 10 through a similar coupling 41 may then be run up to speed to share the load: Reverse driving may be effected by using the motor, which may be disengaged from the engine by a dog clutch. Alternating or direct current may be employed. A similar system is described employing four engines 19 ... 22, two of which are coupled to separate generators 30, 31 supplying a single electric motor 28. All units may be mounted on brackets forming part of the gear casing 11. The couplings may be of any suitable type, Legge synchromesh couplings (Specification 354,711, [Group XXIV]), with locking means electromagnetically operated, and hydraulic couplings, such as fluid flywheels, being mentioned. Governing means may be provided to ensure that pairs of engines may be accelerated at the same rate.
Patent GB-634042-A (GB)
Title: Improvements relating to key cutting machines
IPC: B23P15/00
Filed: 1948-03-16
Abstract: 634,042. Milling keys. RATCLIFFE, A. March 16, 1948, No. 7846. [Class 83 (iii)] In a machine for cutting keys of the cylinder, lever or flat lever-tumbler types, separate clamping devices for a key j to be copied and a key blank each comprises jaws a, b on upper and lower clamping members d, c, and a member k which supports the edge or stem of the 'key or blank, as the case may be, and is mounted between the clamping members d, c for sliding movement towards or away from the jaws. The member k is slotted to receive a screw g and is caused by a screw p to slide against the influence of a spring n bearing on pins o on the member k. A spline m is provided to guide the member k against the edge or shank of the key, and a wing nut i for tightening the clamping member d. The two clamping devices for the pattern key and the key to be cut, respectively, are provided with quadrants s which are apertured at t for rocking or sliding movement on a shaft so that the key can be rocked or slidden over a fixed guide while the blank is cut by a rotary file or saw. A pivoted support g provides a support for the handle of a cylinder key and may be swung out of the way when a flat key is being cut by a saw located near a rotary file used for cylinder keys.
Patent GB-1255776-A (GB)
Title: Improvements in or relating to wrapping apparatus
Inventor: BATE FREDERICK DOUGLAS CLAVELL
IPC: B65B9/06
Filed: 1968-02-17
Abstract: 1,255,776. Wrapping envelope bundles. INDUSTRIAL DEVELOPMENTS (PACKAGING) Ltd. 6 Feb., 1969 [17 Feb., 1968], No. 7864/68. Heading B8C. In a wrapping machine e.g. for bundles of envelopes 20, wherein a folded heat sealable film e.g. of polyvinylchloride or polyethylene is manually drawn from a reel 12 with upper and lower layers of the film respectively above and below a fixed table 24 and with the folded film edge 11 along an inclined edge 22 of the table 24 supporting the bundle of envelopes, the film reel 12 is mounted in a carrier to swivel at right angles to the axis of the reel shaft 36 whereby bundles 20 of different size may sequentially be positioned adjacent the edge 11, and against transverse heat seals formed in the sealing of a preceding bundle, and the film 10 enclosing the bundle 20 may then be drawn under a heat sealing head 26 and swivelled to position the bundle 20 so that heat seals may be applied along and adjacent two sides of the bundle, by sealing head arms 28, 30. The wrapping leaves triangular voids 50, 52 which, however, disappear when the wrapping is shrunk on transfer thereof, on a conveyer 46, to an oven 44. The sealing head is brought into operation about a hinge 27 and each arm 28 or 30 carries an electrical resistance wire heating element which acts also to sever the film, the head 26 automatically being raised by the control of the automatic timer of Specification 1,113,573. The reel shaft 36 is located in vertical slots (34), Fig. 1 (not shown), of side cheeks 32 of the reel carrier and which cheeks 32 also house freely rotatable rollers 38 on which the reel rests, the carrier swivelling on a stub axle (40).