baber/WOPTO huggingface dataset:
Patent GB-452359-A (GB)
Title: Improvements in and relating to change speed gear for vehicles
IPC: B62M11/14
Filed: 1936-04-24
Abstract: 452,359. Variable - speed gears. ZAHNER, R., 33, B³rglenstrasse, Berne, Switzerland. April 24, 1936, No. 11719. [Class 80 (ii)] A change-speed gear particularly for bicycles comprises gear-wheels 3 and 4 freely mounted upon a driving shaft 1 and a gear-wheel 8 freely mounted upon a driven sleeve 7, these gears being constantly in mesh with fixed gears 11, 12 and 13 respectively on a common shaft 15. Clutch members 6 and 9 slidably mounted on the shaft 1 and the driven sleeve 7 respectively are moved to couple either of gears 3 and 4 to the shaft 1 and either of gears 4 and 8 to the sleeve 7 to enable four speeds of the driven sleeve 7 to be obtained. The clutches are actuated by forks 22 which in turn are actuated by cam slots 25 in a liner-sleeve 26 which is guided by the wall of the gear casing or bracket and is rotated by a push-pull rod or wire 27 to effect the desired gear change. Spring-pressed plungers 17 are housed in recesses in the gears 3, 4 and 8 for engaging in corresponding recesses in the clutch members 6 and 9.
Patent GB-166735-A (GB)
Title: Improvements in variable gearing
IPC: F16H37/08
Filed: 1920-04-28
Abstract: 166,735. Fisher, J. W. April 28, 1920. Variable-speed epicyclic gearing is controlled by worm gearing and disc-and-roller friction gearing arranged as shown. The driving-shaft M carries a friction disc E and one side gear L<2> of the epicyclic train. The other side gear L is secured to an aligned driven shaft A. Planet gears L', L'<3> meshing with these gears are carried in a casing W, to which is secured a bevel-wheel Y. A worm-wheel D meshes with worms B, C on parallel shafts N, N'. A pinion F on the shaft N meshes with the bevel-wheel Y. A roller G upon the shaft N<1> is adapted to engage the face of the disc E. In the arrange-- ment shown, the disc G engages a loose ring E', the worm gearing and casino Ware at rest, and the shaft A is driven oppositely to the shaft M at equal speed. As the roller G is moved upwards, the speed of the shaft A falls gradually to zero, and then is reversed. The invention is suitable for motor-vehicles, lathes, and drills.
Patent GB-1446152-A (GB)
Title: Formwork for use in making a round tank
IPC: E04G11/06
Filed: 1974-03-15
Abstract: 1446152 Formwork for round concrete tanks JOHANN WOLF GmbH KG 15 March 1974 [15 March 1973] 11759/74 Heading E1S Formwork for casting a round hollow concrete structure, such as a tank, comprises inner and outer formwork walls made up of arcuate formwork panels 3, 4 having rearwardly-directed engaging flanges 6 at their vertical edges, the flanges 6 extending radially and having a width of 2 to 4 times the panel thickness. Such edges are provided at intervals with slotted connecting lugs 18, 18' mounted on angle members 7, 7'; the lugs on adjacent panels may either overlap and be directly connected by wedges 20, or may be indirectly connected by slotted plates 23 and wedges 20'. The panels 3, 4 have horizontal stiffeners 8, 16; the stiffeners 8 at upper and lower edges are apertured to enable interconnection of superimposed panels by clamp plates 9 with pins 10. The inner formwork wall (Fig. 6, not shown) may be supported against a ring of posts in the interior by a network of horizontal and inclined struts, which may be adjustable in length.
Patent GB-952954-A (GB)
Title: Improvements in arrangements for providing a digital indication of a measured value
IPC: G06M1/10
Filed: 1962-03-28
Abstract: 952,954. Electric selective signalling systems; counters. ALBISWERK ZURICH A.G. March 28, 1962 [March 28, 1961], No. 11819/62. Headings G4A, G4D and G4H. The invention provides means for deriving a correct digital indication of a measured value from "partial values". The partial value is a number having two digits and represents one of the digits of the measured value to a certain degree of accuracy. In the example given in the Specification, the measured value to be indicated is 501. In partial values the 5 digit appears as, say, 49, the 0 digit as 98, and the 1 digit as 01 in decimal scale. In the two embodiments described these partial values are caused to interact with one another by mechanical or electrical means in such a way that the correct value 501 results. In the first embodiment, Fig. 1, the three partial values cause units 1-3 to deliver 49, 98 and 1 pulses, respectively. These pulses are counted by decimal counters 4, 5 and 6, 7, and 8. Upon closure of switch 15 clock pulses from unit 14 count the counters 4-8 back to zero so that, in this example, electromagnet 9 is operated four times, 10 nine times, 11 nine times, 12 eight times and 13 once. A mechanical counter, Fig. 7, is stepped by these pulses to the positions shown. Only digit wheels 21, and 22 or 23, and 24 or 25 are visible to an observer. By means of mechanical interaction between the various disc wheels, wheel 24 is brought into agreement with wheel 25 and wheel 22 with wheel 23. Wheel 24, in moving from eight to one, passes through zero and therefore causes wheel 23 to step by one to zero. Wheels 22 and 23 now disagreeing, wheel 22 moves to zero and therefore wheel 21 moves to 5. The wheels now show 50011, which is seen by an observer as 501. In a second embodiment, the correction is purely electrical. The three groups of pulses are counted in counters 4, 5, and 6, 7, and 8, Fig. 8, and the counts in counters 5 and 6, and 7 and 8 are compared by units 81, 83. These control relays so that clock pulses from units 85,86 are counted forwards or backwards until the compared counts are equalized. Counters 4, 5, and 8 now contain the correct value, namely 501, and the digits of this value are stored in units 87, 88 and 89.
Patent GB-131412-A (GB)
Title: An Improved Apparatus for Determining the Degree of Acuteness of Hearing.
Inventor: WORMULL FREDERICK ALFRED STANL
IPC: A61B5/12
Filed: 1918-07-20
Abstract: 131,412. Wormull, F. A. S. July 20, 1918. Hearing-appliances.-Apparatus for testing the degree of acuteness of a person's hearing comprises a uniform sound-producing device and a telephone circuit comprising a series of resistances, impedances, or condensers whereby the intensity of sound transmitted may be varied and a measure of the acuteness of hearing obtained. In the form shown in Fig. 2, and diagrammatically in Fig. 1, wherein the switches are omitted, the apparatus comprises a sound-producer D consisting of an electro-magnetically operated falling weight striking a diaphragm placed adjacent to a telephone transmitter A connected to the receiver B through a series of resistance coils R, R<1>, each pair of which is bridged by a condenser C. Switches S - - S<4> are arranged in the circuit so that any one or more pairs of resistances and corresponding condensers may be short circuited. In modifications, the falling weight may be operated pneumatically or mechanically, or may be replaced by a phonograph or the like.
Patent GB-592752-A (GB)
Title: Alkamine esters of 1-dialkylaminoalkylpyrrole-3,4-dicarboxylic acids
IPC: C07D207/34
Filed: 1944-06-22
Abstract: Pyrrole derivatives of the general formula <FORM:0592752/IV/1> in which R and R1 are hydrogen or alkyl and X is dialkylaminoalkyl are prepared by heating the corresponding dialkyl ester with a dialkylamino alcohol in the presence of catalytic amounts of an alkali metal alcoholate.  In the examples, the following compounds are prepared from the corresponding diethyl esters and diethylamino alcohols, sodium being dissolved in the alcohols: di-(b -diethylaminoethyl or propyl)-1-(b -diethylaminoethyl)-2.5-dimethylpyrrole - 3.4 - dicarboxylate and di - (b  - diethylaminoethyl) - 1 - (g  - diethylaminopropyl) - 2.5 - dimethylpyrrole - 3.4 - dicarboxylate.  By similar methods, compounds in which R and R1 are hydrogen or alkyls other than methyl may be prepared from the corresponding dialkyl esters obtained by condensing N,N-dialkylalkylene-diamine with diformyl succinic ester, dipropiono succinic ester, dibutyro succinic ester and their homologues.  The alkamine esters may be obtained as the free bases, or converted into their salts, e.g. by treating an anhydrous ether solution of the base with dry hydrogen chloride.
Patent GB-877185-A (GB)
Title: Vehicle suspension systems
Inventor: CLIFFORD JOHN
IPC: B60G11/04
Filed: 1959-04-09
Abstract: 877,185. Spring suspensions; laminated springs. CARY Ltd., WILLIAM E. March 28, 1960 [April 9, 1959], No. 11936/59. Classes 108(2) and 108(3). A laminated spring assembly for a vehicle suspension system in which, normally, longitudinal restraint is applied by way of one, or some only, of the spring leaves is provided with a member which prevents undue longitudinal movement of the spring if the restrained part of it breaks. The master leaf 11 of the main spring assembly 10 is pivoted at 12 to the chassis 13 and has its other end in contact with the main leaf 14a of an auxiliary leaf spring assembly 14 which is fixed to the chassis at 15. The assembly 10 passes between check straps 16 (one only shown in Fig; 1) supporting a transverse rubber-covered abutment bolt 17 which limits the rebound of the spring. The end of the leaf 14a is looped downward at 18 and the end 19 of an intermediate leaf 10a of the assembly is looped over the bolt 17 to provide detents which limit the travel of the assembly 10 if the leaf 11 breaks. Specification 746,332 is referred to.
Patent GB-909447-A (GB)
Title: Improvements in or relating to high-tensile organopolysiloxane fibrous product and method of making
IPC: D04H1/56
Filed: 1960-04-05
Abstract: An elastic high-tensile fibrous body consisting chiefly of cured organopolysiloxane fibres is made by dispersing an organopolysiloxane of molecular weight from 200,000-1,000,000 and a curing agent in an organic solvent, establishing a high velocity primary stream of air, discharging the stream of air into an ambient atmosphere, aspirating the dispersion into and beyond the point of discharge of the stream of air in the same direction thereto in the form of a filamentary stream, supplying a secondary heated air stream coincidental with the primary air stream to dry and cure the filamentary organopolysiloxane, <PICT:0909447/IV(a)/1> <PICT:0909447/IV(a)/2> <PICT:0909447/IV(a)/3> at least partially, breaking the filamentary organopolysiloxane stream into discontinuous fibres and collecting and further curing the fibres so as to form an integral elastic mass in which the fibres are randomly arranged.  Preferably the molecular weight of the organopolysiloxane is from 400,000-700,000, the viscosity of the dispersion is from 40,000 to 80,000 cps. at 70 DEG F., and the dispersion is aspirated at a rate of 0,6-2,5 cubic inches per minute into an ambient atmosphere of temperature 70 DEG -400 DEG F., and air velocity, beyond the point of aspiration, of from 400-1,000 feet/minute.  The primary air velocity may be from 15-22 cubic feet per minute, or a linear velocity of 8,400-12,300 feet per minute, and the secondary air should be at a temperature of from 70 DEG -400 DEG F., especially 175 DEG -250 DEG F.  The organopolysiloxane fibres may be collected in the form of a mat on a moving foraminous barrier, to form a cured, high-tensile strength elastic sheet material of reticulated permeable fibrous structure consisting predominantly of cured organopolysiloxane fibres in random distribution, bonded together at their points of contact, substantially free of shot and having uniform elasticity and strength characteristics per unit thickness, in all directions in the plane of the material (Fig. 2).  Depending on the operating conditions, the fibres formed may be solid, hollow with thick, elastic walls, or voided (Fig. 4).  As shown (Fig. 6), a polysiloxane dispersion is pumped through the jets 12 of the aspirating nozzles 10, to which the primary air stream is supplied from blower 11.  Secondary heated air is supplied from blower 15. 24 is an exhaust fan.  The filaments extruded into chamber 13 become partially dried and broken and the fibres are deposited on the travelling wire screen 14.  The mat of fibres so formed is further dried and cured by passage through the heater.  The product is useful as a thermal insulating material against high temperatures, in shock and vibration dampening installations and as a soft porous elastic material resistant to high temperatures, steam and other gases, e.g. in the platens of presses used in drycleaning.  U.S.A. Specifications 2,357,392, 2,483,404, 2,483,405 and 2,483,406 are referred to.
Patent GB-327866-A (GB)
Title: Portable hand-operated floor polishing machines
IPC: A47L13/30
Filed: 1929-04-19
Abstract: 327,866. Simpson, J. R. April 19, 1929. Floors, waxing and polishing. - A manuallyoperated machine for waxing and polishing floors comprises a polishing brush driven from friction wheels moving over the floor surface, and supply means for the polish comprising a reservoir feeding a regulatable amount of polish to the interior of a spreading brush. As shown, friction wheels 1 with rubber tyres, when pushed over the floor transmit motion to a shaft 3 and therefrom, by bevel gearing, to a disc 9, having spring connection with the polishing brush 11. The polishing brush completely surrounds the driving friction wheels, which are provided with rollers 20, 21 capable of bridging uneven surfaces. A ratchet wheel and pawl device inserted in the bevel gearing driving mechanism ensures a drive only when the friction wheels are moved in one direction. The polish is contained in a reservoir 23 with a spring-pressed plunger 34 and with a regulating valve 28 which discharges the polish to a flexible sleeve 36. The sleeve 36 is surrounded by a brush 37. The plunger is connected to a sleeve 35 having at one end a nut 32 forming an abutment for the spring 29, the nut being forced downwardly to feed the polish by means of a screwed shaft 30. The polishing brush is connected to the disc 9 by means of a pair of inclined hinge like members 13 against which bear springs 15. The tension of the spring is adjustable by means of a nut 17. The handle 22 for pushing the device over the work is preferably arranged at an angle of about 45‹ at which position the line of thrust will pass through the axis of the shaft 3, as indicated by dotted lines.
Patent GB-591620-A (GB)
Title: Improvements in or relating to safety coupling devices for mine trams or the like
IPC: B61G1/28
Filed: 1945-05-15
Abstract: 591,620. Shackles. PRICE, W. May 15, 1945, No. 12157. [Class 24] [Also in Group XXXII] A coupling for mine trams &c. comprises a shackle 1, Fig. 1, having a hook-shaped end 4 engaging a draw-bar 3 and an upstanding coupling pin 2 engaged in the eye of a draw-bar 13 of an opposing tram, a U- shaped safety latch 7, Fig. 3, being pivoted by a bolt 6 in a slot 5 of the hook 4 and adapted to drop over the pin 2. The closed end 8 of the latch is drawn manually into a recess 9 in the pin and a loose bolt 12 housed in inclined guides 11 in the latch drops by gravity into a recess 10 in the pin arranged on the side opposite to the recess 9.
Patent GB-315499-A (GB)
Title: Improvements in electric fuses
IPC: H01H85/42
Filed: 1928-04-27
Abstract: 315,499. Simplex Conduits, Ltd., and McLoughlin, H. F. April 27, 1928. Fusible cut-outs.- The fuse wire o carried by the handle member b of a bridgecarrier fuse is passed between opposed plates d, d<1> that are forced together by spring pressure to extinguish the arc formed when the wire melts. The plates d, d<1> are formed with webs d<3> that extend through slots b<7> in the block b<1> of the handle member b, and are acted upon by springs e, e<1> which may be the springs of the contacts c, c<1>. The wire passes through recesses f to the terminals g that also hold in place the contacts c, c<1> and the plates d, d<1>. The gas pressure caused by the blowing of the fuse acting upon the plates d, d<1> is transmitted to the contacts c, c<1> to increase the grip and prevent displacement of the bridge-carrier. The plates d, d<1> may be faced with cement, asbestos, &c. If the contacts c, c<1> are arranged laterally on the carrier separate springs may be used for the plates d, d<1>, or the contact springs may act on the plates through wedges &c. acting on inclined or curved surfaces.
Patent GB-1388131-A (GB)
Title: Reader mechanism
IPC: G06K7/10
Filed: 1972-03-16
Abstract: 1388131 Optical character reader ZELLWEGER USTER Ltd 16 March 1972 [22 March 1971] 12335/72 Heading G4M In an optical character reader of the kind where characters are optically scanned, the character being located within a predetermined depth of focus region T defined by a reference plane 6 and two outer planes 6<SP>1</SP> and 6<SP>11</SP>, and the reflected light is passed through a collecting lens 20 to a photo-cell 23, a diaphragm 26 is provided at the focal plane of the collecting lens, the diaphragm having an aperture 27 of a size such that the flux of the light beam reaching the photo-cell is independent of the position of the scanned character within the depth of focus region. Light from, e.g. a helium gas laser, is passed via a lens and mirror system to a rotating mirror scanner. The resulting scanning beam 11<SP>111</SP> is passed via a cylinder lens 17 to a gap between two conveyers (represented by rollers 2B, 2D), across which articles bearing characters are transported. The characters may be in the form of concentric circles or bars. The diaphragm compensates for variations in position of the characters within the depth of focus region by intercepting excess light.
Patent GB-850800-A (GB)
Title: Subbed cellulose triacetate film
IPC: G03C1/93
Filed: 1957-04-16
Abstract: 850,800. Photographic films. CELANESE CORPORATION. April 16, 1957 [April 16, 1956], No. 12411/57. Class 98(2) A cellulose triacetate film base of acetyl value at least 58 % is subbed with a layer of secondary cellulose acetate of acetyl value 52-56% followed bv a laver of a mixture of 10-1 parts of gelatine and one part of secondary cellulose acetate. Preferably, the proportion of gelatine to cellulose acetate in the second layer varies from 1:0À2 to 1:0À3. The acetyl value of the film base is preferably in excess of 61 % and that of both coating layers is preferably the same and between 52À5 and 53À5%. The film base may contain triphenyl phosphate and/or diethyl phthalate as plasticiser. The first subbing layer may be applied as a 1-3% solution in acetone or a mixture of methylene chloride, a little methanol and acetone. The gelatine in the second layer is dissolved in a water, methanol mixture and peptised with acetic acid, salicylic acid or phthalic acid so that it is miscible with the cellulose acetate solution in an acetone, methanol mixture. Formaldehyde may be added to harden the gelatine. The preparation of the solution is described in detail and the coating data is given. A conventional silver halide gelatine emulsion is subsequently applied to the subbed base. The base may be subbed on both sides to prevent curling.
Patent GB-939524-A (GB)
Title: Sewer valve
IPC: F16K15/03
Filed: 1961-04-06
Abstract: 939,524. Drainage valves. J. S. NEWMAN. April 6, 1961, No. 12447/61. Class 33. [Also in Group XXIX] A sewer valve for preventing back flow, comprises a body 10 having a chamber 11 between inlet and outlet ports 12, 13 respectively, the chamber being of larger dimensions than these ports to allow free flow, a valve seat 17 associated with the inlet port, and a valve member 19 hingedly depending from a bracket 23 which extends above the seat and at right angles to the plane thereof, in a manner to allow limited universal movement, the valve member assuming a position under gravity in which it hangs a short distance clear of the seating face 17. The valve member is carried on an arm 20 freely suspended by hook portions 26a from links 25 depending from eyes 24a of the bracket 23. Three bosses 34 for levelling purposes are provided on a cover 33 of the body.
Patent GB-184245-A (GB)
Title: Improvements in or relating to nuts and bolts or the like
IPC: F16B39/08
Filed: 1921-05-03
Abstract: 184,245. Shaw, G., and Thorp, T. E. May 3, 1921. Locking nuts.-A nut 5 is locked to a bolt 3 by a stud 7 which presses against the bottom of a smooth-walled recess 8. The nut is castellated to accommodate a locking-pin 12, which passes through the head of the stud. The nut and stud are oppositely threaded. In a modification the stud has an annular recess in its periphery for engagement with the locking- pin and is provided with a tommy-hole. In a further modification the stud is hollow and internally threaded and engages an oppositely threaded extension of the bolt. Specifications 21526/92 and' 165,700 are referred to.
Patent GB-216320-A (GB)
Title: Improvements in window fasteners
IPC: E05C5/04
Filed: 1923-05-11
Abstract: 216,320. Schonfield, W. May 11, 1923. Clamps, screw.-A window fastener comprises . a screwed bolt a mounted in an internally screwthreaded support c on the sash and operated by a driving bush e engaging a shaped end of the bolt and a hand-operated cap piece f connected to the bush by teeth f<3> and fitting the end of the bolt support. Turning of the cap-piece f causes the bolt to advance to engage a sloping edge of a socket on the window frame and thus draw the sash tightly against the frame. A lock-nut j riding on internal screw threads in the driving bush i and operated by a key passing through a hole h in the cap piece may be employed. In a modification, Fig. 2, the bolt support is rotatably mounted on one sash, being turned so that a head a<5> on the bolt engages a corresponding recess in a bracket g on the other sash, the cap piece f being rotated to draw the meeting rails together.
Patent GB-723040-A (GB)
Title: Improvements in or relating to solid propellant jet reaction motors
Inventor: DICKINSON LIONEL ARTHUR
IPC: F02K9/92
Filed: 1952-05-19
Abstract: 723,040. Rocket motors. MINISTER OF SUPPLY. May 19, 1953 [May 19, 1952], No. 12671/62. Class 9(2). A solid propellant jet reaction motor 12 comprises a hollow container 11, a filling of solid propellant therein, and a container for extinguishing liquid which container is connected on the one hand with the propellant container and on the other hand with a supply of gas under pressure, so that extinguishing liquid may be forced into the propellant chamber by opening valve 15, when desired or automatically when motor develops a predetermined thrust.