baber/WOPTO huggingface dataset:
Patent GB-748770-A (GB)
Title: Improvements in door checks
IPC: E05F3/12
Filed: 1953-03-19
Abstract: 748,770. Door -operating appliances. BROWN, J., and BROWN, E. May 3, 1954 [March 19, 1953; March 19, 1953], Nos. 7568/53 and 7569/53. Class 65 (1). Springs; checks.- In a device comprising a spring which is stressed on opening the door and a dashpot which retards closing, a valve member 11 controlling the return movement of the dashpot piston 9 comprises a rectangular stem slidably engaging a rectangular hole in the piston and formed with one corner chamfered off in a tapered manner to close the hole progressively as the door closes, the outer end of the valve stem having screwed engagement with a bush or member 13 rotatably mounted in the casing of the device. In the form shown, to be mounted on a door, the piston 9 carries a sliding member 10 directly engaged by a crank-pin 8 on a shaft 4 which carries an arm to be connected to the door frame, so as to wind up a helical spring in the upper part 2 of the casing as the door is opened. The axis of the dash-pot cylinder 7 is perpendicular to the face of the door, the cylinder being fitted into the back of the casing. The piston contains a non-return valve allowing flow of liquid from one side to the other as the door is opened. The bush 13 is prevented from axial movement by a fixed pin engaging an annular groove in it. The arm carried by the shaft 4 is adjustable, and a finishing cap, preferably interlocking with the arm, is carried by it to close the top of the casing; the cap may be dotted so that it can be tilted and slid along the arm.
Patent GB-918623-A (GB)
Title: Process for the manufacture of polymeric monoalkylketenes
Filed: 1959-03-05
Abstract: A trimeric monoalkyl ketene is prepared together with lesser amounts of other polymeric forms of the ketene by allowing the monomeric mono-alkyl ketene to polymerize under vacuum at a temperature ranging from +30 DEG  to -30 DEG C., the monomer being continuously fed into a circulating stream of a reaction medium consisting initially of an inert solvent and thereafter comprising the product and withdrawing part of the circulating stream comprising the product.  The trimers have the formula <FORM:0918623/IV (b)/1> where R is an alkyl group. The reaction may be effected by passing gaseous alkyl ketene in counter current to the reaction medium which is circulated by means of a pump through a gas-liquid scrubbing apparatus.  The reaction medium may be propionic anhydride, methy propionate or the product of a previous trimerisation and may contain 0.1-10% by weight of a polymerization inhibitor e.g., hydroquinone.  In examples, trimerisation is effected in scrubbing apparatus as above under 60-80 mms. pressure whereby (1) methyl ketene yields the trimer and minor amounts of dimer, higher polymers, and sometimes propionic anhydride and (2) ethyl ketene yields trimer and minor amounts of dimer, higher polymer and butyric anhydride.  The trimerisation of isopropyl ketene is also mentioned.
Patent GB-448201-A (GB)
Title: An improved railway rail joint
IPC: E01B11/24
Filed: 1935-12-11
Abstract: 448,201. Railway rail joints. BROGDEN, A. N., 413, Lytham Road, Blackpool. Dec. 11, 1935, No. 7790. [Class 104 (ii)] In a rail joint the ends 3, 4 of the rails are cut to half thickness so that they overlap, and have a pair of elongated bolt holes 6 for the bolts 7 of a two-bolt fishplate 8, the ends of the rails extending beyond the ends of the fishplate and overlapping a pair of adjacently disposed chairs 10 on adjacent sleepers 9. A filling piece 15 may be used to enable a cut rail 3 to be connected to a full width rail 16.
Patent GB-507867-A (GB)
Title: Improved implement for domestic use in stringing and cutting french beans and for other similar purposes
IPC: A47J17/06
Filed: 1938-03-14
Abstract: 507,867. Cutting fruit and vegetables. LORD, W. R. March 14, 1938, No. 7898. [Class 5 (i)] [Also in Group VI] A bean-stringer and cutter, usable also for cutting and slicing fruit and vegetables, comprises a plate 7 having apertures 13, 14, the outer edges 15, 16 of which serve as gauges for determining the depth of the cut, a clamping- plate 9 having gaps 20, 21 to correspond with the apertures 13, 14, and a blade 10 (as shown, a safety razor blade) interposed and held between the plates 7, 9 which are clamped together by a bolt 11 passing through the holes 24 .. 26. The plate 7 is provided with a stiffening rib 18 and a flange 19 which bears upon the corresponding edge of the plate 9 and the rear edge of the blade 10. The plate 7 is provided with a tang 8 which enters the handle through a slot in the ferrule, and the plate 9, which is provided with a stiffening-rib 22, has a projection 23 which passes, also, into the ferrule. The gauge 16 is more remote from the cutting-edge than the gauge 15.
Patent GB-1161653-A (GB)
Title: Bidirectional Distribution System
IPC: H03K19/08
Filed: 1968-02-19
Abstract: 1,161,653. Data transfer. SPERRY RAND CORP. 19 Feb., 1968 [2 March, 1967], No. 7911/68. Heading G4A. A bi-directional digital data distribution system has first and second bi-stable storage devices interconnected by first and second pairs of gates so that enabling signals applied to the first pair of gates transfer information between the storage devices in a first direction and enabling signals applied to the second pair of gates transfer information between the storage devices in a second direction, the information transfers being effected along a single transmission line, and each bi-stable device being connected to one gate from each pair. Bi-stable flip-flops composed of NAND gates 200, 220 or 290, 310 are interconnected via transmission line 230 and NAND gates 150, 160, 240, 250. To transfer data the receiving flip-flop is cleared and the appropriate enabling signal READ or WRITE is applied. If WRITE is applied a high signal to NAND gate 150 acts to reverse the signal from NAND gate 310. If this is high the signal in line 230 is low. If it is low the signal on line 230 is high. NAND gate 160 receives a high from the WRITE signal and a low or high from line 230. The low signal causes a high output and renders line 210 low and line 140 high which corresponds to the initial signal on flip-flop A. The high signal causes a low output from the NAND gate 160 and hence a high on line 210 and a low on line 140. Absence of a signal on a line such as 190 acts as a high. A similar procedure occurs during a READ operation to transfer data from flip-flop B to flip-flop A. The NAND gates can be formed from transistor circuits (Fig. 4, not shown). The transmission line can be connected to a plurality of flip-flops (Figs. 6, not shown) the appropriate one of which can be enabled during READ and WRITE operations.
Patent GB-681297-A (GB)
Title: An improvement in or relating to transmission mechanism
IPC: F16H31/00
Filed: 1950-03-30
Abstract: 681,297. Clutches. BROWN & SONS (HUDDERSFIELD), Ltd., D., and TUPLIN, W. A. March 30, 1951 [March 30, 1950], No. 7933/50. Class 80 (ii). In mechanism wherein a shaft d is driven. alternately forwardly and reversely, forward rotation is transmitted from a constantly-rotating shaft a by engagement of a single-jaw clutch b, a reversible electric motor g being de-energised and driven idly from the shaft d through gears e, f during this period. At the end of the forward movement, clutch b is disengaged and motor g is energised to drive shaft d reversely. At the end of the reverse movement, motor g is reversed to drive shaft d forwardly, and on approximate synchronisation of shafts d, a the clutch b is re-engaged and the motor de-energised.
Patent GB-513906-A (GB)
Title: Improvements in and relating to internal combustion engines of the liquid-fuel injection type
IPC: F02B23/06
Filed: 1938-03-15
Abstract: 513,906. Oil engines. SOC. ANON. A. SAURER. March 15, 1938, No. 7981. Convention date, April 22, 1937. [Class 7 (iii)] In an oil engine air is admitted to the cylinder tangentially so as to rotate about the cylinder axis and is forced at the end of the compression stroke through an opening 9 into a toric-shape combustion chamber 7 in such manner that the centrifugal effect of the rotating air exceeds the displacement effect of the piston so that during the compression stroke the air will flow directly past the rim of the opening 9 along the wall of the chamber 7 and back towards the fuel injector 5 as a helical eddy. In Fig. 1, air is admitted through a screened valve 10 and the cross-section of the inlet passage and the velocity of the air are such as to produce the effect desired. Alternatively to predetermining the size of the inlet passage and as shown in Fig. 5, the clearance between the piston and the cylinder head is increased adjacent the opening 9 to reduce the displacement effect of the piston on the air entering the chamber 7. If preferred, the chamber 7 may be located in the cylinder head. Specification 421,101 is referred to.
Patent GB-379641-A (GB)
Title: Improvements in and relating to ships' drives
IPC: H02P9/04
Filed: 1932-03-18
Abstract: 379,641. Motor power plant. AKT.- GES. BROWN. BOVERI, ET CIE, Baden, Switzerland. March 18, 1932, No. 8084. Convention date, March 25, 1931. [Class 110 (iii).] In a ship's drive comprising a reciprocating engine driving a propeller shaft and a turbine, supplied with exhaust steam and coupled electrically to the propeller shaft, the coupling machines are both series excited direct current machines. The electric circuit is opened with the shutting off of steam to the turbine when going astern, or the field of the motor may be reversed, leaving the turbine operative ; the field switch is interlocked electrically or mechanically with the reversing lever. To prevent de-energization of the machines by current reversal they are given different remanence; or they may have different degrees of saturation, be differently constructed, or may have an additional excitation from an extraneous source, insufficient to affect their series characteristic.
Patent GB-540233-A (GB)
Title: Electrical signalling systems
IPC: H04B1/12
Filed: 1940-05-07
Abstract: 540,233. Secret transmission. STANDARD TELEPHONES & CABLES, Ltd. May 7,1940, No. 8188. Convention date, May 19, 1939. [Class 40 (iv)] [Also in Group XL] In a system in which a signal wave such as a speech wave is transmitted in the form of pulses or trains of waves of short duration compared with the intervals between the pulses or trains, parasitics occurring in the intervals are balanced out at the receiver by parasitics of similar wave form received on a channel of adjacent frequency, the adjacent channels being received by a common H.F. or I.F. amplifier and subsequently separated by filters the outputs of which are applied to a differential detector. In system also providing automatic balancing of the parasitics, Figs. 2 and 3, the pulses marking the leading and trailing edges respectively of variable duration pulses are transmitted on two different frequency channels, from which balancing parasitics are derived at the receiver, and automatic correlated gain control of the two channels is provided at the transmitter and also at receiver. At the transmitter, Fig. 3, the speech wave is applied at 31 to a multi-vibrator 32 providing outputs of variable duration pulses depending on the amplitude of the wave. Sets of short unidirectional pulses marking the leading and trailing edges of a set of variable duration pulses are derived across resistances 35, 36 due to condensers 33, 34 and the sets are used respectively to key or shock excite oscillators 37, 38 of different frequencies coupled over 39 to the aerial. The outputs of the oscillators are also applied to a pair of differentially connected rectifiers 40 and the differential output is applied to bias the oscillators to vary their outputs in opposite senses, thereby equalizing them. At the receiver, Fig. 2, the output of the intermediate frequency amplifier 15 is applied to a pair of filters 16, 17 which separate the two channels, each of which comprises one set of pulses and accompanying parasitics. The outputs of the filters are amplified at 18, 19 and applied to rectifiers 20, the pulse outputs of which are applied over condensers 21, 22 to a double stability trigger device 23 from which the original wave is derived in known manner. If the two branches are balanced, the parasitics in the outputs of 20 cancel out. The balance is maintained automatically by applying the voltage developed due to lack of balance across resistance 25 shunted by condenser 28, to vary the bias of the intermediate frequency amplifiers in opposite senses to restore balance.
Patent GB-492603-A (GB)
Title: Improvements in or relating to can openers
IPC: B67B7/70
Filed: 1937-03-20
Abstract: 492,603. Can - openers. KATZINGER CO., E. March 20, 1937, No. 8268. Convention date, Aug. 20, 1936. [Class 66] In a traction-wheel opener adapted to cut out the end of a can with the traction wheel engaging the underside of the rim, the cutter and the traction wheel are mounted on separate members pivotally connected together. A plate 10 provided with a handle 11 carries the traction wheel 13 and its operating handle 14, the cutting blade 23 being carried by a member 19 pivoted to the plate 10 at 18 and provided with a handle 28 normally held apart from handle 11 by a spring. The blade 23 is formed as an extension parallel to the part 19 and connected therewith by a flange 22 and is disposed outside the traction wheel when in the cutting position, and a guide finger 26 depending from the flange engages the plate 10 at a position to the side of the blade. When the handles are separated in applying the device to a can, the end of flange 22 abuts against a stop 17 formed at the end of the recessed and curved part 16.
Patent GB-956974-A (GB)
Title: A pure, stable 4-epitetracycline compound and process for its manufacture
IPC: A23K20/195
Filed: 1961-03-07
Abstract: The invention relates to the crystalline methanol addition product of 4-epitetracycline, which is prepared by reacting with methanol, 4-epitetracycline or a mixture thereof with tetracycline containing less than 15% of tetracycline and isolating the crystalline methanol addition product thus obtained.  Preferably the reaction is carried out at 0 DEG -30 DEG C. and the 4-epitetracycline is used in the form of a salt from which it is liberated in the form of its free base during the reaction by the addition of sufficient amount of an acid or base, the acid or base thereby forming a salt soluble in methanol. Pharmaceutical compositions may be prepared with suitable carriers e.g. foods.  Specifications 815,524 and 862,124 are referred to.
Patent GB-127379-A (GB)
Title: Improvements in or relating to Wheels and Wheel Fitments.
Inventor: KILLEN EDWARD BRICE
IPC: B60B11/06
Filed: 1918-05-17
Abstract: 127,379. Killen, E. B. May 17, 1918. Disk wheels; double and multiple wheeLs arranged side by side; hubs.-A wheel comprises two dished metal stampings, such as 23, 24, flanged at the periphery to form tyre-retaining members 1, 2 and connected to the hub or axle by means admitting of axial adjustment, the disks being detachably connected to one another by transverse bolts 9. Between the hub and rim, one or both disks may be offset as shown. The axial adjustment at the hub is obtained by means of separate distance-pieces 32, 35, 36, Fig. 4, 10, 31, Fig. 7, and 25, Fig. 6, which may be formed of wood with metal facing-plates. In the form shown in Fig. 4, the flanged rims 1, 2 of the disks are adapted to engage the tyre directly In Figs. 6 and 7, the rims 1, 2 are shown embracing the felloes 15, over which detachable bonding-rings 18, 19 and 20, 21 are fitted to form the tyre seats. Fig. 7 also shows a hub fitting, for adaptation to various types of hub &c., comprising a sleeve 28 having driving-keys 27 to engage the wheels hub and a flange 29 for attachment, permanently or otherwise, to the existing hub &c. flange 30. The fitting may also have a front flange 33.
Patent GB-909126-A (GB)
Title: 16ª--17ª--alkylidenedioxy steroids and process for preparation
IPC: C07J71/00
Filed: 1959-03-11
Abstract: The invention comprises steroids of the formula <FORM:0909126/IV (b)/1> (wherein :Cc-Cd-Ceis :C(a Hal).CH(OH). CH2-, :CH.CH(OH).CH(a Hal)-, :C(a Hal).  CO.CH2-, :CH.CO.CH(a Hal)-, :C=CH-CH2, :C-CH=CH-, <FORM:0909126/IV (b)/2> :CH-CO.CH2-, :CH.CH(a  or b OH).CH2-, <FORM:0909126/IV (b)/3> or :C(a Hal).CH(O alkanoyl).  CH2-, A and B are hydrogen atoms or alkyl groups, Ca-Cb is -CH2CH2-, -CH=CH-, -CH2CH(CH3)- or -CH=C(CH3)- and Y is CH3, CH2OH or CH2O alkanoyl, the alkyl and alkanoyl groups each containing at most 6 carbon atoms); and their preparation (1) by reacting the corresponding 16 : 17-dihydroxy steroids with the appropriate aldehyde or ketone; (2) for compounds wherein the substituents in the 9:11-positions are 9a -halo-11b -hydroxy or 9b :11b -oxido by treating the corresponding 9(11)-unsaturated steroids with an N-halo-succinimide or -acetamide in presence of an acid, dehydrohalogenating if desired to form the 9b :11b -oxido steroids and if desired reacting these with the appropriate halo acid to form the 9a -halo-11b -hydroxy steroids again; (3) for compounds wherein Ca-Cb is CH=CH-, by halogenating the corresponding 2-alkoxyoxalyl-3-keto-D 4-16a :17a -alkylidenedioxy steroid, heating the resulting mixture with a base and dehydrohalogenating e.g. with a tertiary amine; (4) for compounds wherein the substituent in the 11-position is a keto group, by treating the corresponding 11-hydroxy steroids with chromic anhydride; and (5) for 21-alkanoyloxy-steroids, by acylation of the corresponding 21-hydroxysteroids.  Detailed examples are given and the hydrolysis of a 21-acylate to a 21-ol also is described.  16a :17a -Dihydroxy-steroids are prepared by hydroxylation of the corresponding D 16-steroids, for example by osmylation and hydrolysis.  2 - Ethoxyoxalyl - 16a :17a  - isopropylidenedioxy-4:9(11)-pregnadiene-3:20-dione is prepared from the corresponding 2-unsubstituted steroid and ethyl oxalate.  11b  - Acetoxy - 9a  - fluoro - 16a :17a :21-trihydroxy-1:4-pregnadiene-3:20-dione is prepared by partial hydrolysis of the 11b :16a :21-triacetoxy compound.  11a  - Methanesulphonyloxy - 16a :17a  - iso - propylidenedioxy-4-pregnene-3:20-dione is prepared from the 11a -hydroxy compound and methanesulphonyl chloride.  9a  - Bromo - 11b :16a :17a -trihydroxy-4-pregnene-3:20-dione is prepared from the D 9(11)-compound and N-bromosuccinimide.  Reference has been directed by the Comptroller to Specification 889,765.
Patent GB-292276-A (GB)
Title: Improvements in or relating to aircraft and the like engines
IPC: B64D35/00
Filed: 1927-03-26
Abstract: 292,276. Carter, B. C. March 26, 1927. Dynamometers rotary transmission, with recording-apparatus; traction indicators.- For recording the variations of torque transmitted to an aircraft propeller, a spring coupling is introduced between the propeller hub and a sleeve 1 on the engine shaft, and a stylus or sparking point 30 is mounted on a lever 29 pivoted on an arm 32 on the sleeve 1 and provided with a tooth 34 engaging teeth 35 on a member secured to the propeller hub. The stylus 30 co-operates with a disc 36, Fig. 5, which can be moved into contact with the stylus by rotating a ring 41 by Bowden mechanism, the ring having projections 40 which normally enter recesses in the back of the plate 36. Propeller thrust may be recorded by making provision for axial movement against a spring washer between the propeller hub and the end of its shaft and transmitting the movement through bevel teeth to a lever similar to the lever 29.
Patent GB-995242-A (GB)
Title: Locks
IPC: E05B21/00
Filed: 1961-03-08
Abstract: 995,242. Locks. ALBERT MARSTON & CO. Ltd., and H. M. WILLIAMS. Feb. 23, 1962 [March 8, 1961], No. 8399/61. Heading E2A. A lever lock is characterized in that leaves 20 are provided between the levers 16 position to separate them, these leaves 20 being without any function in lifting the levers or operating the bolt. There is also provided a casing 11, a backplate 12, a bolt 13, the bolt levers and leaves all being pivoted at 14. A stud 17 mounted on the bolt 13 protrodues through gates 16a in the levers 16 and slots 22 in the leaves 20. The nosing 24 of key 14 engages with the levers 16 lifting them out of engagement with the stud 17 so that the key may engage a notch 27 in the bolt 13 to extend in into the shot position.
Patent GB-344675-A (GB)
Title: Manufacture of 3-ethoxy-4-oxybenzaldehyde
IPC: C07C45/29
Filed: 1930-03-15
Abstract: 3-Ethoxy-4-oxybenzaldehyde is manufactured by subjecting trichloromethylguethylcarbinol, prepared by alkaline condensation of 1-oxy-2-ethoxybenzene with chloral, to saponification and oxidation by means of a reducible heavy metal compound.  The two processes are carried out in the same solution, either simultaneously or in succession.  In examples the oxidation is carried out by means of copper carbonate subsequent to hydrolysis and by copper oxide simultaneously with hydrolysis, the product being extracted with an organic solvent, for instance benzene or chloroform, the solvent removed by distillation and the product purified by distillation.
Patent GB-195861-A (GB)
Title: Improvements in and relating to electric drives for sound reproducing machines
IPC: G11B17/02
Filed: 1922-03-23
Abstract: 195,861. British Thomson - Houston Co., Ltd., (General Electric Co.). March 23, 1922. Driving.-Driving-mechanism for a gramophone comprises a vertical spindle 2 mounted in the casing of the machine, a high-speed electric motor of the induction-meter type the magnetic members of which are supported in the casing, a shaft 14 secured directly to the disc rotor 10 and having a centrifugal governor 19 mounted on it, and reduction gearing 17, 18 between the shaft 14 and the vertical spindle 2. The reduction gear may be pinion and spur-wheel instead of the worm-gearing shown, and the motor shaft may be arranged vertically. Specification 17247/15 is referred to.
Patent GB-676478-A (GB)
Title: Improvements relating to brackets
IPC: E04G5/06
Filed: 1950-04-05
Abstract: 676,478. Brackets. STEELE, A. B. Feb. 23, 1951.. [April 5, 1950 ; Nov. 14, 1950] Nos. 8566/50 and 27823/50. Class 52 (v). [Also in Group XXV] A detachable bracket for attachment to columns comprises a clamping member in the form of an adjustable band A to which a bowshaped' spring B is secured so as to lie parallel with the length of the column, the lower end of the spring being bent up to form a load supporting hook E. When the spring is compressed the clasping member can be loosely fastened around the column and when it is released it holds the clasping member firmly in engagement with the column. In one modification a separate load supporting hook is provided. In a further modification for use with flanged girders the clasping member comprises a front member and two rear portions approximately parallel to the front portion one of which may be connected to the front plate by means of a tension spring.
Patent GB-825583-A (GB)
Title: Improvements in apparatus for feeding a plurality of yarns at rates varying in accordance with a pattern
Inventor: CRAWFORD ALLAN HUGH
IPC: D03D39/02
Filed: 1957-05-03
Abstract: 825,583. Tufting-machines. MOHASCO INDUSTRIES Inc. May 3, 1957, No. 8592/59. Divided out of 825,581. Drawings to Specification. Class 112 The subject-matter of this Specification is identical with that of Specification 825,581 but the claims are directed to the construction of the apparatus for feeding the yarns. Specification 825,582 also is referred to.