baber/WOPTO huggingface dataset:
Patent GB-675357-A (GB)
Title: Multiple beam optical system
IPC: G02B27/28
Filed: 1950-12-11
Abstract: 675,357. Optical systems. AMERICAN CYANAMID CO. Dec. 11, 1950 [March 31, 1950], No. 30243/50. Class 97 (i). A system for producing a multiple beam from a single beam or vice versa, particularly for use in colour photography or colour television comprises in optical alignment a double prism splitting an incident beam into two diverging beams plane polarized at right angles to each other, means, such as a retardation plate, for depolarizing the divergent beams without changing their relative intensities, a second double prism splitting each depolarized beam into two beams plane polarized at right angles to each other, and a lens for focusing the beams to form images. Fig. 4 shows the system as applied to a three-colour television camera. Light from the objective 13 after passing a stop 24 is divided by a Wollaston prism 1 into two beams which are depolarized by a retardation plate 2, for example of calcite, and again divided by a second Wollaston prism 3 oriented at right-angles to the first. The beams pass through a lens 5, a decentred lens 15 and colour filters R, G, B to reach the camera tubes 16, the fourth beam being absorbed by a filter 17. The elements 1, 2 and 3 may be slidably mounted on rails to permit of adjustment of the images relative to the tubes 16. A similar system is described for three- or fourcolour photography or kinematography. Fig. 5 shows the system applied to the projection in superposition of four colour separation records 4, four collimated beams from which after passing through the appropriate colour filters R, G, B and neutral filter N are converged by a lens 5. Each beam is passed through a filter 20 rendering the beams plane polarized, the members of the upper and lower pairs being plane polarized at right-angles to correspond with the polarization states of the beams diverging from the system shown in Fig. 4. After passing the Wollaston prism 3 and depolarizer 2, the beams, now recombined as two beams, are rendered plane polarized at right angles by polarizers 21, are combined by the Wollaston prism 1 and focused on the screen by a suitable objective. For use in television the images 4 are replaced by three television receivers, or the filters R, G, B, N are dispensed with, the receiver tubes having suitable phosphors producing appropriately coloured beams. Instead of using the polarizers 20 and 21 the unwanted beams may be removed by a suitable diaphragm located at the position of the stop 24 shown in Fig. 4. For television projection the decentred lenses 15 of Fig. 4 may be used to allow the television receivers to be spaced apart on a pyramid reflector provided for this purpose. If desired, a further depolarizer and Wollaston prism may be provided beyond the prism 3 shown in Fig. 4, to produce further images.
Patent GB-767669-A (GB)
Title: Device for the regulation of electrical heating and de-icing equipment
IPC: G05D23/24
Filed: 1954-10-20
Abstract: 767,669. Helical springs. UHER, E., [trading as UHER & CO. GES. FUR APPARATEBAU]. Oct. 20, 1954 [Oct. 20, 1953], No. 30251/54. Class 108(3). [Also in Groups XXXV and XXXVII] The coils of a helical spring 42, confined within a casing 41 resiliently support a container 43 for shock-sensitive apparatus by co-action with the screw-threaded exterior of the container.
Patent GB-446271-A (GB)
Title: Valve grinding disc for grinding engine valves and valve seatings
IPC: B24B15/00
Filed: 1934-10-23
Abstract: 446,271. Grinding valves and valve seatings. GAINES, W., 36, Burley Wood Lane, Leeds. Oct. 23, 1934, No. 30329. [Class 60] A centrally apertured cloth or paper disc having a serrated or notched edge 1 and coated on one side with an abrasive coarser than that on the other side is used for trueing the surfaces of valves and valve seatings. The valve stem is inserted through the central aperture 2 and is rotated in the valve guide, first with the rougher side in contact with the valve and subsequently with the rougher side in contact with the seating.
Patent GB-602161-A (GB)
Title: Improvements in or relating to laundry marking machines
IPC: B41F31/24
Filed: 1945-08-01
Abstract: 602,161. Typewriters &c. NATIONAL MARKING MACHINE CO. Aug. 1, 1945, No. 30341/47. Convention date, Aug. 10, 1944. Divided out of 602,112. [Class 100 ( iv) ] Inking-arrangements.-In laundry-marking machines of the kind comprising a type-assembly shown as type-wheels 19, a platen-carrier 62 movable to and from printing position and an inking-roller so mounted on the carrier that it will roll across the type as the carrier moves to and fro, a stationary ink-supply device is provided so situated that the inking-roller is in engagement therewith when the carrier is in printing position. As shown, an inking-roller 145 covered with felt rings 146 is mounted in spring-pressed bearings 139 slidable in guides in a bracket 78 fixed to rods 66 rigid with the platen-carrier 62 whereby the roller 145 rolls over the type wheels 19 as the platen moves to and from printing position. The roller 145 is inked by contact with a stationary supply-device 98 consisting of a wick the top of which forms an ink-pad being folded on itself and stitched to form a loop passed over a supporting bar 97, and which dips into a trough 100 adjusted about pivots 202 by turning a screw 93 connected by a link 95 to the trough. The latter is supplied from a constant-level reservoir 108 at one side of the machine connected by a pipe 102 to either of two holes in the bottom of the trough, the other being plugged. The constant-level device comprises a feed pipe 1051 the lower end of which is cut off at a bevel and which is housed in an elbow 103 connected to the pipe 102. In the idle position of the machine, the housing 78 forms a cover for the ink-pad. Specifications 568,833, 569,457 and 602,112 are referred to.
Patent GB-1330448-A (GB)
Title: Television camera tube
IPC: H01J29/84
Filed: 1972-06-29
Abstract: 1330448 Electron guns PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 29 June 1972 [2 July 1971] 30428/72 Heading H1D An electron gun for a vidicon comprises a cathode 30 (Fig. 3), a grid 31, an anode 32 having an aperture the smallest diameter of which is at most 0À150 mm. and at least equal to the diameter of the beam, and a hollow cylindrical electrode 35 provided with a diaphragm 36 having an aperture the smallest diameter of which is at most 10% of the distance between it and the anode aperture. As illustrated the anode may comprise an apertured plate covered by a foil 42 including an aperture of 0À1 mm. diameter, the foil acting to intercept the beam of electrons returned from the target whilst allowing uninterrupted passage of the primary electron beam 38. The beam forms a cross-over at 39 and continues as a beam 40 which is restricted to the portion 41 by the diaphragm 36.
Patent GB-263283-A (GB)
Title: Improvements in or relating to automatic or semi-automatic telephone systems
IPC: H01H67/16
Filed: 1925-12-02
Abstract: 263,283. Coventry Automatic Telephones, Ltd., and Puckette, C. C. Dec. 2,1925. Automatic exchange selectors of the Strowger type are provided with a set of contact springs 10 operated by a projection 13 on a pivoted bar 12 which is in turn controlled bv a cam 15 on the switch shaft 2. so that by suitable shaping of the cam 15 and by constructing the bar 12 as a stepped member the springs 10 may be operated at any desired point in the vertical or rotary movements, and may thus serve, for example, as rotary off-normal contacts, eleventh-step rotary contacts, vertical off-normal contacts, or contacts operated only on particular levels. In the switch shown, the springs 10 serve as rotary off-normal contacts, the vertical offnormal contacts 3 being controlled by a pivoted member 4 and shaft arm 6 in known manner. The arrangement may be such that the springs are operated partially on one step and fully on a subsequent step. When the springs are to be used as vertical off-normal springs or to operate only on particular levels, the cam 15 may be replaced by a plain disc on the switch shaft.
Patent GB-816817-A (GB)
Title: Improvements in or relating to devices for compiling and displaying histograms
Inventor: JONES ERIC LINDSAY
IPC: G01D7/00
Filed: 1957-10-01
Abstract: 816,817. Recording-apparatus. STANDARD TELEPHONES & CABLES Ltd. Oct. 1, 1957, No. 30639/57. Class 106 (4). Apparatus for automatically compiling and displaying a histogram from a series of observed values comprises an escapement latch 6 for releasing a small steel ball 5 from a magazine 4 for each observed value, a plurality of parallel equally spaced compartments 7 each representing a different observed value and each adapted to retain a single column of balls 5 visibly therein, and channels 8 in independent slides 2 directing each released ball into a different compartment 7 for each different combination of slide positions according to the corresponding observed value. As shown in Fig. 1, the magazine 4 is a recess in an inclined plate 1, the channels 8 are grooves in five slides 2, each spring urged to the right, but movable to the left by an associated solenoid so that each groove 8 in one slide can register with one of two grooves in the next slide, the lowest cooperating with the compartments 7, which are grooves in a plate 3, slightly less inclined to the horizontal. As each value is observed, it is converted to binary code and appropriate contacts are made to energize the slide solenoids and when the slides are appropriately positioned the escapement solenoid is momentarily operated to release a ball. When the histogram is complete a permanent record may be made by placing carbon paper over the balls and pressing plain paper thereagainst. The balls are then returned to the magazine by tilting the plate 3 about pivot 22 so that they roll down a plate 23 into a container 19, which is then raised by operating a handle 18, an arcuate shield 21 preventing ,the escape of the balls until the container is in line with the magazine 4. In another embodiment the grooved slides are arranged according to a decimal-binary code.
Patent GB-870062-A (GB)
Title: Improvements in or relating to miller itegrator feedback circuit arrangements
Inventor: JULIAN JOHN DERTAD
IPC: H03K4/20
Filed: 1958-09-25
Abstract: 870,062. Valve pulse shaping circuits. MARCONI INSTRUMENTS Ltd. May 26, 1959 [Sept. 25, 1958], No. 30736/58. Class 40(6) A Miller integrator has its grid clamped to a potential determined by the anode potential, such that the anode current flowing is substantially equal to that which is required at the commencement of the linear excursion of anode voltage. As shown in Fig. 1, the bias on the grid of valve 1 is adjusted by the tapping 9 on the potentiometer 8, with the switch in the position shown. If the switch is then moved to its other position, the diodes 5, 10 are cut off, and the valve executes a voltage excursion. In the practical circuit shown in Fig. 2, the voltage derived from the anode is taken through a cathode follower 12 having the potentiometer 8 as its load and the two diodes have their cathodes connected across the load of a further cathode follower 13, to the grid of which triggering pulses are applied.
Patent GB-726678-A (GB)
Title: Process for the production of an insecticide
IPC: A01N25/10
Filed: 1952-12-04
Abstract: An insecticidal composition is prepared by treating oil of turpentine, or terpene hydrocarbons of formula C10H16 with 3 to 8 per cent. concentrated sulphuric acid at a temperature below 0 DEG C., removing the tars and saturating the resulting mixture of alpha pinene and polymerised pinene with a chlorinated insecticide such as D.D.T. or benzene hexachloride at room temperature, and then adding an emulsifying agent.  The preferred emulsifying agent is colophony saponified with aqueous alkali, e.g. potassium hydroxide.
Patent GB-410413-A (GB)
Title: Improvements in saddles for vehicles
IPC: B62J1/02
Filed: 1933-11-06
Abstract: 410,413. Saddles. OTTENSTEIN, R., 61, Guntherstrasse, Nuremberg, Germany. Nov. 6, 1933, No. 30812. [Class 136 (iii).] A saddle is pivoted to the front end of an angular support or saddlepin, and is provided with a downwardlyextending arm to which are connected one or more springs for controlling the pivotal movement of the saddle, the rear ends of the springs being secured to the part of the saddle-pin which fits into the cycle frame. The saddle frame 3 is pivoted at 2 to a squared head 1<1> on the saddle-pin 1, and is provided with a downward extension 4 comprising a pair of parallel members connected together by a bolt 5, to which is connected the front end of a tension spring 6, the rear end of which is secured to the pin 1, as by means of a nut 7 to permit adjustment of the tension. The inner surfaces of the frame members 3, 4 bear against the flat sides of the head 1<1>.
Patent GB-204949-A (GB)
Title: Improvements in window fittings for motor and other vehicles
IPC: B60J10/04
Filed: 1922-11-11
Abstract: 204,949. Charlesworth Bodies, Ltd., Steane, C., Jackson, S. B., and Critchard, O. J. Nov. 11, 1922. Vehicle windows; rattling, preventing.- The pivoted guides 2 for the sliding windows of vehicles are faced on the outside with rubber &c. packing 4 which engages the pillar &c. and prevents rattling. The facing is secured to the guide by means of any suitable metal core 8, Fig. 4, and screws 6, or it may be moulded and held in a recess of suitable shape with or without screws 13, Fig. 7. Flanges 12 may be formed on the guides to prevent spreading of the rubber packing.
Patent GB-300020-A (GB)
Title: Improvements in fastening and lock devices for boxes, cases, and the like
IPC: E05B65/50
Filed: 1927-11-18
Abstract: 300,020. Hill, W. J. Nov. 18, 1927. Hasp fastenings and locks for boxes, cases, &c. comprise a loop e, preferably rectangular, pivotally mounted on the lid l and adapted to embrace a projecting lock-casing b secured to the box &c. m and be engaged by the bolt a of the lock. The bolt when shot preferably overlies the face of the loop as shown, Fig. 3. The loop is pivoted to a casing g containing a spring serving to retain the loop in its extreme positions. A guide pin j may be provided on casing (or lock case) to enter a hole d in the lock case (or in casing g).
Patent GB-1185520-A (GB)
Title: Improvements relating to Actuating Devices for Vehicle Friction Clutches
IPC: F16D25/08
Filed: 1967-07-05
Abstract: 1,185,520. Controlling clutches. DAIMLERBENZ A.G. 5 July, 1967 [6 July, 1966], No. 31003/67. Heading F2L. In a vehicle spring-engaged friction clutch, substantially the whole travel of a clutch pedal 10 is utilized, with linkwork 11-14, to progressively reduce the pressure on the clutch pressure plate, complete withdrawal of the plate to completely disengage the clutch being effected by power means, e.g. a compressed air or hydraulically operated servo piston 19, actuated by the clutch pedal on completion of its stroke. As shown, the pedal 10 acts through linkwork 11-14 on the clutch disengaging lever 15 carrying a shaft 16 and a disengaging fork 17. The servo piston 19 also acts on the lever 15 and is actuated by a valve 22 which normally vents a line 21 at 25 but, on completion of the pedal stroke, is abutted at 24 by the pedal and connects line 21 to a pressure accumulator at 26 to completely withdraw the clutch pressure plate. A pin and slot, or like, lost motion connection 28, 29 (which may be provided with a spring), between a link 13 and an adjustable link 14 allows the servo piston to pivot lever 15 whilst the pedal remains in the same position. The valve 22 is provided with a return spring, the effect of which on the pedal 10 is substantially equal to the effect on the pedal of the clutch apply springs (shown symbolically at 24), so that actuation of the power means has no appreciable effect on the force on the pedal 10. A separate throttle valve, or a suitable throttle in the control valve 22, ensures that the piston 19 is relieved slowly, on raising the pedal 10, until the lost-motion in connection 28, 29 is taken up and pedal 10 resumes control.
Patent GB-428146-A (GB)
Title: Improvements in or relating to the preservation of rubber
IPC: C08K5/18
Filed: 1933-11-08
Abstract: Ethoxy phenyl b -naphthylamines, particularly the para compound, are used as antiagers for rubber; they may be added to the mix, or applied to the article after vulcanization.
Patent GB-171708-A (GB)
Title: An improved apparatus for sharpening safety razor blades
IPC: B24D15/08
Filed: 1921-11-21
Abstract: 171,708. Salmon (nÚe Goubert), J. Nov. 20, 1920, [Convention date]. Stropping - apparatus; wheel apparatus; cutting-edges, treating. -For sharpening removable flat or hollowground safety - razor blades, a cylinder or wheel 2, fitted with a leather or like sharpening-surface 3 and capable of being turned by a hand-crank 5 or other means, is mounted in a frame comprising uprights 1 and a crossmember 6, the hollow-ground blade, or a flat blade mounted in a holder, being engaged between pairs of studs 7, 8 in such a manner that the blade can be depressed to bring the cutting-edge into contact with the sharpening- surface. The lower studs 8 are covered with rings 9 of rubber or other elastic material, so that, when the pressure is removed, the blade is raised clear of the sharpening-surface and rests towards its back upon the cross-member 6.
Patent GB-1206099-A (GB)
Title: New alkoxyalkyl esters of octahydro-1,2,4-methenopentalene-5-carboxylic acid, and process for their production
IPC: H01H9/42
Filed: 1969-06-19
Abstract: 1,206,099. Methenopentalene carboxylic acid esters. J. R. GEIGY A.G. 19 June, 1969 [20 June, 1968], No. 31156/69. Heading C2C. The invention comprises compounds of the formula where R is an alkoxyalkyl radical with 2 or 3 carbon atoms in the alkylene moiety and 1-4 carbon atoms in the alkoxy moiety. The compounds are prepared by reacting 2,5-norbornadiene with a suitable alkoxyalkyl ester of acrylic acid at between 150 and 200 C. in the presence of a nickel (O) catalyst and with a continual supply of starting materials adapted to the rate of the reaction.
Patent GB-153900-A (GB)
Title: Improvements in locks
IPC: E05B59/00
Filed: 1920-11-04
Abstract: 153,900. Dujarric, L. Faure-. Nov. 8, 1919, [Convention date]. Latches, sliding; locks, cases for; lock mechanism, lever-type.-The latch-bolt d of a rim or mortise lock is pivoted about a pin o upon a cylindrical follower b having a groove in its periphery to house the recoil spring n, which works between a screw m and a stop on the casing. Bosses T, T<1> on the handles t, t<1> are connected to each other and to the follower b by screws P, P<1>. The cover-plate is secured by fitting into a dovetail groove on the curved side of the casing, and by a screw v at the opposite side. Within the follower b may be fitted a part e, shaped as shown in Fig. 5, and carrying a spring pin g, capable of engaging either of two recesses in the follower b. When the part e is turned through a right angle by a separate inside handle x, the movement of the latch is blocked. Fig. 7 shows the addition of a key-lock to a latch-mechanism as above. Tumblers g are first depressed by the key so that the pin h on the bolt e is unblocked, whereupon further movement shoots the bolt. The tumblers are then returned by springs l, and the pin h is again blocked.
Patent GB-365178-A (GB)
Title: Improvements in and relating to the manufacture and production of artificial threadsand filaments and products therefrom
IPC: D06M13/188
Filed: 1930-10-18
Abstract: Threads or filaments obtained by dry-spinning a solution of an organic ester of cellulose and a small proportion of wax are delustred by treating with an aqueous soap solution at or near the boiling point.  The wax, for example paraffin wax or spermaceti wax, may be homogenized with the cellulose ester solution at a temperature above the melting point of the wax according to the process of Specification 360,626.  In an example, cloth woven from threads prepared by dry-spinning a solution of cellulose acetate and paraffin wax, is immersed in a solution of green olive oil soap at 90 DEG  to 95 DEG  C. and finally washed and dried.  The cloth has a matt appearance.
Patent GB-299720-A (GB)
Title: Improved manufacture of acetone
IPC: C07C45/48
Filed: 1928-10-29
Abstract: 299,720. Consortium f³r Elektrochemische Industrie Ges. Oct. 29, 1927, [Convention date]. acetone is obtained catalytically from acetic acid by passing the acid vapour over a suitable catalyst, for example cerium compounds, at such a speed that only part of the acid can be converted. The unchanged acid may be separated from the product and returned to the process. Another method of working is to carry out the decomposition in the presence of an indifferent vapour or gas, such as steam, carbon dioxide or nitrogen. The increased heat consumption may be compensated by a suitable heat exchange for preheating the acetic acid, e.g. to about 300‹ C., or the acetone to be distilled. For example, a mixture of 20-50 parts of acetic acid vapour with 80-50 parts of steam may be passed over cerium oxide and pumice stone at 480‹ C.
Patent GB-314080-A (GB)
IPC: C06F1/02
Abstract: 314,080. Kessler, J., and Fischer, G. June 22, 1928, [Convention date]. Matches.-A means for inserting splints into the perforated dipping bars of a match-making machine comprises a grooved plate having a horizontal reciprocating motion and being adapted to receive the splints from a hopper in combination with a vertically reciprocating toothed bar which also partakes of the horizontal movement of the plate. The distance of the bar from the front edge of the grooved plate is adjustable so that the device can be used for splints of different lengths. The plate 1, Figs. 1, 4 and 5, has two series of grooves, 2, 3, one series being three times the depth of the other. The plate is attached to a carrier 5 which has a longitudinal reciprocating motion, and which is shown in its rearward and frontward positions in Figs. 1 and 4 respectively. The splints A are received in the grooves of the plate 1 from a hopper 4, a vertically reciprocating bar 8 being guided by rails 7 attached to the carrier 5 and having teeth 9 to co-operate with the grooves in the plate 1. At the commencement of a forward stroke, the bar 8 is raised and simultaneously a member 12 on the wall of the hopper 4 is also raised, the splints then being pushed into the dipping bars 16 by the forward movement of the plate 1 and bar 8. Guides 15 are attached to the hopper wall, and a plate 14 prevents the jamming of the splints against the member 12. The member 12 is formed at its lower edge as a comb 13, and is lowered, together with the bar 8, at the commencement of the return stroke of the plate 1 to clean the grooves 2, 3. The opposite wall 20 of the hopper is also provided with cleaning teeth co-operating with the grooves 2, 3, and is hinged, but is locked in its closed position during the working of the machine. Distance pieces 17 having handles 19 and slots 18 to clear the bolts 6 securing the rail 7 to the carrier 5 may be interposed between the rail and the carrier to vary the position of the bar 8 with relation to the grooved plate 1 and thereby to adjust the device for dealing with splints of different sizes.