baber/WOPTO huggingface dataset:
Patent GB-795753-A (GB)
Title: An improved electric micromanometer
IPC: G01L9/00
Filed: 1956-04-13
Abstract: 795,753. Measuring pressure electrically. COMPAGNIE POUR LA FABRICATION DES COMPTEURS ET MATERIEL D'USINES A GAZ. April 13, 1956 [May 12, 1955], No. 11346/56. Class 40 (1). An electric micromanometer comprises two pairs of fixed electric windings L1, L2 and L3, L4 disposed within a chamber 5 filled with an insulating liquid and bounded by two metal diaphragms 6, 7 subjected to the action of pressures, the difference between which is to be measured, the deformation of the said diaphragms producing a displacement relative to the windings and consequently a variation of the coefficient of mutual induction thereof, the axes of said windings being perpendicular to the planes of their respective diaphragms, and a circuit for measuring the said variation. The diaphragms may also carry a metal plate for varying the mutual induction of the coils. As shown in Fig. 1 the manometer is connected to a fluid duct 1 on opposite sides of an apertured diaphragm 2 so that the diaphragm 6 is subjected to the pressure at one side of the diaphragm 2 and the diaphragm 7 is subjected to the pressure on the other side of the diaphragm 2. The windings L1-L4 are connected in a Wheatstone bridge circuit and in each instance the windings of a pair are disposed in opposite arms. Each winding is in series with an adjustable winding L1<SP>1</SP>-L4<SP>1</SP> and each arm includes a capacitor C in parallel so that each arm can be tuned to the frequency of a generator 10 by adjusting the auxiliary winding. The generator 10 is connected across one diagonal of the bridge and operates at a frequency of the order of 30 kc/s. per second. An amplifier 11 is connected across the other diagonal of the bridge and operates a measuring instrument 12. A detector can be introduced between the amplifier and the instrument 12 if pulsating pressures are to be measured. In a modification a plurality of additional diaphragms can be provided so that the manometer can operate over a wide range of pressures. These additional diaphragms are interposed each in a separate duct between the duct 1 and the diaphragm 7 and between the diaphragm 7 and the additional diaphragm the ducts contain a liquid and also valves for changing from one duct to another. The thickness, rigidity, or size of the auxiliary diaphragms is graded in accordance with the pressure range and reduce the pressure on the diaphragm 7.
Patent GB-580534-A (GB)
Title: Improvements in or connected with adjusters for parallax measuring instruments
IPC: G01C3/14
Filed: 1943-07-13
Abstract: 580,534. Range-finders. BARR & STROUD, Ltd., and FRENCH, SIR J. W. July 13, 1943, No. 11398. [Class 97 (i)] An adjuster for a parallax measuring instrument such as a range-finder or height-finder is constructed so that error due to transverse temperature gradient is substantially annulled or prevented. In the form shown in Fig. 5, the adjuster A is applied to a self-annulling stereoscopic range-finder R such as described in Specification 580,531 and comprises objectives 26, 27 carrying marks 28, 29 as in Specification 28728/06, [Class 97]. Between the objectives there is provided an inverting prism combination comprising a pentagonal 32 and a triangle 35 ; the hot air effects of the left- and righthand portions thus annul one another. In place of the combination 32, 35, a single prism as 43, Fig. 6, giving a reversal effect may be used. In other forms, the air in the adjuster tubes may be replaced by a transparent solid medium such as glass 46, Fig. 7, whereby no error due to unequally heated air arises.
Patent GB-539909-A (GB)
Title: Improvements in or relating to centrifugal pumps
IPC: F04D9/02
Filed: 1940-07-09
Abstract: 539,909. Centrifugal pumps. WITHERS, J. S. (Jaeger Machine Co.). July 9, 1940, No. 11427. [Class 110 (i)] A self-priming centrifugal pump comprises a chamber 5 for priming liquid open to the discharge 7 of the pump chamber 4 and communicating by a pipe 17 with the inlet 14 when a spring valve 19 is open as in Fig. 2. The valve is connected by a link 24 to a hinged plate 22 arranged in the path of flow of the liquid from the pump to the delivery port 3, so that when the pump is primed the plate is raised by the liquid and closes the valve 19. Specification 404,829 is referred to.
Patent GB-953583-A (GB)
Title: Improvements in or relating to co-ordinate tables
Inventor: SHARP VICTOR HENRY
IPC: B23Q1/26
Filed: 1961-03-29
Abstract: 953,583. Co-ordinate tables. ARNOTT & HARRISON Ltd. June 25, 1962 [March 29, 1961], No. 11442/61. Heading G1M. A co-ordinate table, e.g. for use with a profile form trace projector, comprises a base 10 with a groove 10a on which an arm 11a of a cross arm slides. A platform 12 slides on the other arm 11b of the cross arm and is prevented from tipping by magnets 13 and bearing 16. The position of platform 12 is controlled by micrometers 18,19. Slip gauges may be inserted between each micrometer and platform 12, the platform being urged towards the micrometers by coil springs 24, 26. Specifications 882,075, 885,507 and 885,508 are referred to.
Patent GB-420073-A (GB)
Title: Improvements in or relating to the manufacture of laminated glass
IPC: B32B17/10
Filed: 1933-04-19
Abstract: The Provisional Specification describes the removal of the solvent from a thin layer of a solution of a polymerized organic compound on a sheet of glass by treating with a liquid capable of removing the solvent but substantially inert to the polymerized organic compound. Polymerized methyl acrylate or the polymers described in Specifications 389,115 and 389,151, [both in Group VIII], may be used in solution in ethyl acetate, for example, and the solvent removed by treatment with water or tetrahydronaphthalene.  The glass sheet may be damped with the solvent before coating.  Specifications 328,919, [Class 20 (iii)], 389,106, and 419,357, [both in Group VIII], also are referred to.
Patent GB-610745-A (GB)
Title: Improvements in or relating to vibrators for converting a direct current in a pressure medium into an alternating current in such medium
IPC: G10K9/20
Filed: 1946-04-15
Abstract: 610,745. Sirens. KOCKUMS MEKANISKA VERKSTADS AKTIEBOLAG. April 15, 1946, No. 11540. Convention date, April 28, 1945. [Class 13] In apparatus for producing vibrations in a medium comprising an oscillating member closing on one side a chamber 21 and on the other inlet and outlet ports 11 and 33, the oscillating member comprises two discs 12 and 13, the latter having a central hole closed by disc 12 to form a valve connection between port 33 and chamber 21. In operation, air under pressure is supplied to port 11 and depresses the discs and air flows out through port 33. Increase in pressure therein pushes down disc 12 and air flows through the hole in disc 13 and around the loose fitting edge of 12 to chamber 21 causing an upward pressure that cuts off flow from port 11. A cycle of vibrations is thus built up. A leaking port such as 24 is provided in chamber 21 to prevent pressure building up therein to a level which would impede starting of the device. The port 33 is connected to a horn 10 that governs the frequency produced by the device. The first part of the horn increases in crosssection with length according to an exponential formula, but the bell-mouth is curved to give a more rapid rate of increase.
Patent GB-793434-A (GB)
Title: Improvements in devices for laterally displacing crop lying on the ground
IPC: A01D78/00
Filed: 1954-06-18
Abstract: 793,434. Hay-making. VAN DER LELY N.V., C. June 18, 1954 [July 6, 1953]. No. 11628/56. Divided out of 793,431. Class 6(3). A device for laterally displacing crop lying on the ground comprising a plurality of rake wheels rotatable by contact with the ground is characterized in that a group consisting of at least two rake wheels 9, 10 is rotatable about a horizontal hinge axle. As shown, the rake wheels 9, 10 are rotatable on axles 13, 14 connected by a coupling member 8 to an arm 7 provided with a shaft 6 rotatably mounted in a tubular member 5 fixed to a beam 4. The beam is connected by a member 3 to a frame 2 mounted on a tractor. A segment 17 is mounted on the arm 7 and the axles 13, 14 may be secured to the segments 17 by pins. The rake wheels may be yieldably mounted by means of a spring 19 connected to an arm 20 on each axle and to a member 18 rotatably mounted on the member 8 and fixed relatively to the segment 17. Specification 793,433 is referred to.
Patent GB-118014-A (GB)
IPC: B65H71/00
Abstract: 118,014. Rydings, A. Oct. 23, 1917. Pasting cops.-The paste is supplied to the cops by a wheel 3 with spaced teeth rotating freely in a box 1. The teeth project through a slot in the front of the box and are rotated by engagement with the cops. The paste is distributed by a brush 7 mounted adjust. ably upon the frame 6. The box 1 has an airtight india-rubber cover or a hinged cover rendered airtight by the paste adhering thereto.
Patent GB-824031-A (GB)
Title: Improvements in or relating to process for producing stainless steel
Inventor: LENA ADOLPH JOHN
IPC: C22C38/44
Filed: 1957-04-10
Abstract: A heat-treatable stainless steel has a composition within the following range in per cent by weight: .C.0.03-0.15 .Cr.14.5-18.0 .Ni.3.5-7.0 .Mo.2.0-3.5 .Si.up to 0.5 .Mn.0.25-2.0 .N.0.05-0.15 .Fe.and impurities the balance The composition is further restricted to have a stability factor in accordance with the following formul in which the proportion of constituents are represented by their chemical symbols. Ni - 1/12 (Cr + 1.5 Mo - 20)2 + 1/2 Mn + 35 (C + N) - 14 where Cr + 1.5 Mo is less than 20 or Ni + 1/12 (Cr + 1.5 Mo - 20)2 + 1/2 Mn + 35 (C + N) - 14 where Cr + 1.5 Mn is greater than 20 the appropriate formula having the following value, namely -3.82 to -4.65 when C + N is between 0.11 and 0.2 and Cr is 16 to 18 or -0.1 to -1.0 when C + N is between 0.2 and 0.28 and Cr is 14.5 to 16.  The steel is annealed within the range 1675 to 2000 DEG F., cooled to room temperature at a rate sufficient to retain at least 70% austenite, cooled to a temperature in the range -80 DEG F. to -110 DEG F. to transform the austenite to martensite, and tempered in the range 750 to 900 DEG F., e.g. for one to eight hours.  Preferably the steel is fabricated to plate, bar, sheet or strip form prior to the annealing and is further fabricated to the finished product immediately prior to the sub-zero cooling.
Patent GB-974819-A (GB)
Title: Improvements in polymer production
IPC: C08G2/00
Filed: 1962-03-28
Abstract: An oxymethylene polymer in powder form is obtained by polymerizing trioxane with or without a comonomer in a liquid mixture containing at least 50% trioxane while subjecting the material simultaneously to shearing and blending and continuing this shearing and blending until a product is obtained in which at least 65% of the trioxane present is in polymer form. Specified comonomers are cyclic ethers while inert solvents may also be present.  Boron fluoride or its complexes are preferred catalysts. The polymerization mixture may be fed into a continuous mixer comprising a barrel provided with rows of teeth along its inner surface and an interrupted thread screw fitting in the barrel, said screw being both rotated and reciprocated so that the mixture travels through the barrel while the mixture at any point is blended with the mixture immediately behind it.
Patent GB-543331-A (GB)
Title: Improvements relating to electric railways
IPC: E01B7/24
Filed: 1940-07-18
Abstract: 543,331. Electric railways. BROOKMAN, O. J. R. July 18, 1940, No. 11871. [Class 104 (iii)] A conductor rail 1 for an electric railway is provided with an electric heater 2 taking current from the rail or a companion rail. The heater may be a plate 2 insulated at 4, 5 or a wire 6 on an insulator 7, and may be enclosed in a casing 9. Several heaters 26, 26<SP>1</SP> are arranged along the conductor or switched on by relay switches 11, 11<SP>1</SP> under the control of a master switch 13.
Patent GB-129144-A (GB)
Title: Improvements in or relating to the Case Hardening of Metal.
Inventor: RUSHEN PERCY CHARLES
IPC: C23C8/40
Filed: 1918-07-20
Abstract: 129,144. Rushen, P. C., (Shimer, P. W., and Richards, J. W.). July 20, 1918. Manures.-The spent material from a casehardening bath comprising calcium cyanamide, potassium chloride, and other salts may be utilized as a fertilizer.
Patent GB-857147-A (GB)
Title: Polyvinyl alcohols of high solution viscosity and process for their manufacture
IPC: C08F8/12
Filed: 1957-04-11
Abstract: In a process for the manufacture of watersoluble polyvinyl alcohols of which aqueous solutions of 4% strength have a viscosity higher than 100 c.p. at 20 DEG C., a vinyl ester of a fatty acid containing 2 to 8 carbon atoms is copolymerized with an ether of vinyl alcohol and an aliphatic alcohol containing between 6 and 18 carbon atoms wherein the weight of the ester is at least 51% calculated on the total weight of the monomer, in the presence of a peroxide as catalyst, and the copolymer so obtained is completely or partially hydrolysed to yield a water-soluble product.  Esters specified are vinyl acetate and propionate.  As ethers are specified the vinyl ether of montanol and vinyl octyl, dodecyl and octadecyl ethers. Copolymerzation can be effected in suspension, emulsion or solution. As catalysts dibenzoyl, diacetyl or dilauryl peroxides can be used. Acid or alkaline hydrolysis can be used.  In one example the ammonium salt of a copolymer of styrene with maleic anhydride is present in the polymerization mixture.  The products are suitable for thickening dyestuff pastes or glues or can be converted to polyvinyl acetals.
Patent GB-723255-A (GB)
Title: Improvements in detachable luggage carriers for vehicles
IPC: B62D63/06
Filed: 1952-10-29
Abstract: 723,255. Traitors; luggage racks. BURNS, A. T. Oct. 29, 1952 [May 12, 1952], No. 11944/52. Classes 103 (2) and 108 (1). A detachable luggage carrier of the type which may be fixed to the roof of a motor car &c., Fig. 4, is provided with wheels so that it may be converted into a trailer, Fig. 1. The carrier when mounted on the roof is supported on adjustable legs 3, 4 and the wheel-carrying frames are pivoted about longitudinals 7 rotating in members 6 to lie underneath the carrier. When the carrier is to be used as a trailer, the wheel frames are pivoted to the vertical position, Fig. 3, and held in such position by stays 18 pivoted at 18A, sliders 18B and the members 6 being adapted as by clamping screws to hold the longitudinals 7 and the stays 18 in position. The draw-bar, Fig. 5, consists of two rods 23, 24, each of which may be made in two separate lengths hinged or otherwise secured together at one end to form an eye 25 and secured at points 26, 27, 30, 31 to the frame, or the rods may run longitudinally of the frame in spaced relation to each other as shown in chain-dotted lines on Fig. 5. The rods may be disconnected and clipped to the carrier when not in use.
Patent GB-369039-A (GB)
Title: Improvements in dies for use in the manufacture of tiles and blocks
IPC: B28B7/00
Filed: 1931-04-23
Abstract: 369,039. Moulding tiles, curb blocks, &c. in pressing dies. CLARKE, H., 74, Pinnox Street, Tunstall, Stoke-on-Trent. April 23, 1931, No. 12009. [Class 87 (ii).] The lower die of a co-operating pair for forming bull-nosed tiles, curb blocks and like irregularly-shaped articles having undercut recesses at the back, is formed in two parts one of which is of curved formation provided with a laterally extending portion and is spring-mounted in the other to slide relatively thereto so as to compress an abnormal amount of material between the lateral projection and the co-operating part of the fixed member. Fig. 1 shows a lower fixed die X with the part b slidably mounted therein and controlled by the adjustable spring C. Pressure applied to the top die Y compresses the article T and also compresses the flange T<2> by moving the member b inwards to the extent allowed by the movement of the stop b<3> in the slot b<6>. On the upper die being raised, the lowest die can also be raised to allow the article to be .removed sideways from the mould. In one modification the part b is considerably wider than in Fig. 1 and is provided with two guiding arms sliding in the main die. In another modification the dies are arranged to press the tile in an horizontal instead of an oblique position. Fig. 5 shows a sliding member b with a bulbous head for forming curb blocks.
Patent GB-751656-A (GB)
Title: Improvements relating to pinning machines for lamp bases and the like
IPC: H01J9/28
Filed: 1954-04-27
Abstract: 751,656. Feeding articles. BRITISH THOMSON-HOUSTON CO., Ltd. April 27, 1954 [April 27, 1953], No. 12167/54. Class 117. [Also in Groups XXII and XXX] Apparatus for feeding cylindrical shells for electric lamp bases one at a time from a loose assemblage thereof includes a rotating conical drum member formed on its inner margin with a series of studs each adapted to carry a shell. A reservoir of shells la is contained in a compartment formed by a stationary shroud 32, an inner rotating cone 29 and the rim of an outer conical drum 15 rotating in the opposite direction, the drum 15, rotated by a belt 34, driving the cone 29 through gearing 35, 36, 37 and shaft 26. The interior rim of the drum 15 is formed with a series of studs 33 on which the shells seat themselves and which carry the shells, prevented from guide means from dropping off, to a position where the guide means terminates and the shells drop off onto a rotary feed conveyer 16.
Patent GB-170820-A (GB)
Title: Improvements in electric switches
IPC: H01H33/14
Filed: 1921-04-28
Abstract: 170,820. MÚtallurgique Electrique. Oct. 29, 1920, [Convention date]. Oil switches; switches, quickbreak; sparking-preventing devices; contacts. - Oil-break switches comprise two pairs of fixed contacts 2, 3 and 9, 10 adapted to be bridged by contact-carrying bars 5, 7 respectively. The outer pair of fixed contacts 2, 10 are connected to the external circuit through metal rods passing through insulators 1. Between the fixed contacts 3, 9 is connected the primary winding of a series transformer 11 which is arranged within the oil tank. The Specification as open to inspection under Sect. 91 (3) (a) states that the contact members comprise main contacts 13, 14 and shunt contacts. The shunt contact 17, Fig. 2 (Cancelled), is secured to a rod 17 surrounded by a spring 20, and the movable shunt contact comprises a number of radially-disposed hook-shaped members 18 pivoted in a sleeve 19 surrounding a rod 22, a spring 21 being interposed between the sleeve 19 and a projection of the bridging bar 15. In the opening movement the main contacts 13, 14 having separated, springs. 20. 21 are strained until the enlarged head 23 of the rod 22 forces apart the hooked members 18, thereby allowing the shunt contacts to spring apart, causing a quick break. This subjectmatter does not appear in the Specification as accepted.
Patent GB-580243-A (GB)
Title: Improvements in or relating to fuzes for projectiles
IPC: F42C5/02
Filed: 1941-09-23
Abstract: 580,243. Projectile fuzes. BLACKMAN, W., and HULSE, F. W. Sept. 23, 1941, No. 12294. [Class 9 (i)] Relates to arming devices for the fuzes of rocket projectiles (such projectiles having a low initial acceleration and little spin) of the kind actuated when the external air pressure developed during flight and acting on a piston in a cylinder exceeds a predetermined value and produces a sudden movement of the piston to effect arming. According to the invention, the effective area of the piston subjected to air pressure is suddenly increased following initial movement' of the piston, thereby accelerating the piston to complete the arming. In the form shown applied to a time fuze having combustion rings 3, 4, the piston 7 is retained against a shoulder C<1> in the cylinder by the pressure of a spring 14, the lower end of which rests on a shoulderedstriker 13 that engages pivoted latches 15 which in turn engage the piston. The arrangement is such that the external air pressure acts through'passages B first to move the piston suddenly to expose a larger area to the pressure, the latches being turned first to raise the striker and compress the spring 14 and then to permit release of the striker to pierce the detonator 20. Passages 40 leading to the outside slipstream serve to reduce the pressure below the piston. A safety stop 21 below the striker is turned aside by hand when the fuze is set. The time of arming can be adjusted by rotating the screwed member 17 carrying the latches and locking by a pin 41. Specification 579,921 is referred to.
Patent GB-566911-A (GB)
Title: Electrical control device for intermittently operating apparatus
IPC: H01H3/00
Filed: 1943-07-29
Abstract: 566,911. Control systems for consumption apparatus. LINDARS, H. July 29, 1943, No. 12345. [Class 38 (iv)] [Also in Group XXXVII] Switching control.-The switching on and off of an electrical apparatus, which is required to be operative during a succession of periods separated by inoperative periods, is effected at the contacts 8 of a relay R1, the energization of which is controlled by rotary switches A1-A4 and B1-B3. Switches A1-A4 are driven by a synchronous or other motor A and control the length of the periods during which the apparatus is operative, whilst switches B1-B3, which are driven by a reversible motor B control the length of the inoperative periods. The switches A1, A2 and B1 consist of earthed conducting discs fitted with insulating segments A1<SP>1</SP>, A2<SP>1</SP>, B1<SP>1</SP>, whilst the remaining switches are in the form of insulating discs having conducting segments A3<SP>1</SP>, A4<SP>1</SP>, B2<SP>1</SP>, B3<SP>1</SP>. The cycle of operations is as follows : a starting circuit for motor A is completed under the control of a contact operated by motor B and rotation of motor A causes the closing of its own running circuit from line 14 to earth as the segment A1<SP>1</SP> moves off the fixed contact 1 of switch A1 ; relay R1 is then energized from line 16 as segment A4<SP>1</SP> passes under the fixed contact of switch A4, thereby closing the load contacts 8 and establishing a self-maintaining circuit over its contacts 9 and an adjustable " operative period " timing contact 2 of switch A2. The relay remains energized until the selfmaintaining circuit is broken by the passage of segment A2<SP>1</SP> under contact 2. Motor A stops when segment A1<SP>1</SP> again reaches contact 1, but just prior to this a starting circuit for motor B is closed over contacts A3<SP>1</SP>, 3 of switch A3, this motor being supplied from a line 21 over reversing contacts 12 of a relay R2. Motor B is independent of contacts 3, A3<SP>1</SP> as soon as segment B1<SP>1</SP> moves off fixed contact 5 and continues to run in a clockwise direction until segment B3<SP>1</SP> reaches an adjustable " non-operative period " timing contact 7 of switch B3, which closes the circuit of R2, thereby throwing over the contacts 12 and causing the motor to run in the reverse direction until stopped by the segment B1<SP>1</SP> again reaching contact 5. During reversal, a self-holding circuit for the relay is provided over its contacts 10. Just prior to stopping, segment B2<SP>1</SP> and its co-operating fixed contact 6 close the starting circuit for motor A over the relay contacts 11 and conductor 25. The holding circuit of the relay is broken when segment B1<SP>1</SP> returns to its initial position. In modified arrangements, the two sets of switches are driven by a single motor clutched to each set alternately and reversal of motor B is effected by a switch mechanically operated from its spindle; whilst the switches may be in the form of make - and - break contacts operated by discs provided with projections or indentations.
Patent GB-223515-A (GB)
Title: Improvements in or relating to endless track vehicles
IPC: B62D55/14
Filed: 1924-05-20
Abstract: 223,515. Renault, L. Nov. 2, 1923, [Convention date]. Endless-track vehicles.- The guiding-rollers 6 are provided with pneumatic tyres 9. The rollers are coupled in pairs so spaced as to admit a rib 8 on the band 3, the rib guiding the rollers and preventing any lateral dis. placement or derailment.