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1. 发明专利

GB385495A Improvements in or relating to signal or like lamps 未知
公开(公告)号：GB385495A
公开(公告)日：1932-12-29
申请号：GB943132
申请日：1932-04-01
申请人： COOKE TROUGHTON & SIMMS LTD , JOHN DUNLOP LINN , EDWARD WILFRED TAYLOR
IPC分类号： B61L5/18
摘要： 385,495. Signal &c. lamps. COOKE, TROUGHTON, & SIMMS, Ltd., LINN, J. D., and TAYLOR, E. W., Buckingham Works, York. April 1, 1932, No. 9431. [Classes 75 (ii) and 75 (iv).] In a railway signal or like lamp the socket of an electric lamp bulb 16 is .directed towards a Mangin lens-mirror 13 which constitutes the entire reflecting surface employed behind the bulb, the bulb-holder 11 projecting through an aperture in the mirror, and a portion 17 of the bulb remote from the mirror is silvered. The silvering preferably is in the form of a circular band of sufficient width to reflect light on to the whole of the exposed concave surface of the mirror. The holder 11 is adjustable axially by means of nuts 12 engaging the ends of a cylindrical bush 7 having a flange 8 up against which the mirror is secured by a. nut 14 and leather or like resilient washers 15. The bush is secured within a central aperture 6 in a boss 5 formed on the back-plate 1 of the lamp casing by means of a nut 9 and a washer 10, the boss 5, flange 8 and washer 10 having contacting surfaces which are concentric and spherically machined. The latter permit the mirror and bulb to be adjusted with respect to the lamp casing and facilitate the use of a peep-sight tube when inserted into the bush after removal of the holder 11.

2. 发明专利

GB215981A Improvements in or relating to surveying instruments for mining purposes 未知
公开(公告)号：GB215981A
公开(公告)日：1924-05-22
申请号：GB1439023
申请日：1923-05-31
申请人： ALFRED TAYLOR , JOHN DUNLOP LINN
IPC分类号： G01C17/12
摘要： 215,981. Taylor, A., and Linn, J. D. May 31, 1923. Miners' dials.-The sighting-means in a miners' dial consists of a telescope of unit magnification. The telescope A consists of two similar lenses a equidistant from a diaphragm or cross-wires a so that either lens can be used as the eyepiece. The telescope is mounted in a holder A provided with a pivot a by which it is rotatably mounted in a bracket B, discs a , b graduated on their peripheries and carried by the holder and bracket respectively, being provided to form a vernier scale for indicating the inclination of the telescope to the horizontal. The bracket B is mounted on the compass box C and is provided with means for setting it at one or more definite inclinations to the vertical, these means comprising two radial keys b carried by the bracket and adapted to engage in corresponding pairs of radially disposed depressions on the box C. The bracket can be secured to the box in any of these positions by screws b .

3. 发明专利

CA238601A LEVEL 未知
公开(公告)号：CA238601A
公开(公告)日：1924-03-11
申请号：CA238601D
申请人： JOHN DUNLOP LINN
发明人： TAYLOR ALFRED

4. 发明专利

GB328815A Improvements in or relating to tripods 未知
公开(公告)号：GB328815A
公开(公告)日：1930-05-08
申请号：GB1507129
申请日：1929-05-14
申请人： COOKE TROUGHTON AND SIMMS LTD , JOHN DUNLOP LINN
IPC分类号： F16M11/16
摘要： 328,815. Cooke, Troughton, & Simms, Ltd., and Linn, J. D. May 14, 1929. Tripod stands.-Each pivoted leg of a tripod stand is pivotally connected to the tripod head by engaging projections and apertures, play between which is prevented by springs provided in respect of each individual leg. In the construction shown in Fig. 2 a pin 2 carried by the leg 1 engages and rotates in apertures in the stand head 5 and is pressed upon by a, spring or spring- pressed bearing block 6. In the construction shown in Fig. 4 a pin 11 carried by the leg 1 has conical end portions 12, 13 which engage conical apertures in the stand head 5, one portion 13 being axially movable on the pin and pressed by a spring 14 into its aperture.

5. 发明专利

GB354764A Improvements in or relating to engraving machines 未知
公开(公告)号：GB354764A
公开(公告)日：1931-08-12
申请号：GB1459030
申请日：1930-05-12
申请人： COOKE TROUGHTON & SIMMS LTD , JOHN DUNLOP LINN
IPC分类号： B44B3/00
摘要： 354,764. Engraving-machines. COOKE, TROUGHTON, & SIMMS, Ltd. and LINN, J. D., Buckingham Works, York. May 12, 1930, No. 14590. [Class 100 (ii).] In an engraving-machine of the type in which a controlling member is guided in a desired path and operates a cutting tool by means of a pantograph or like linkage, the motion of the controlling member is determined in one direction by a rotary copy cam device and in a direction at, and in a plane at, right-angles thereto by a groove or its equivalent in or on the cam surface, the path of each groove lying to one side or other of a mean line. The mechanism enables a series of engraving operations to be performed. A rotating tool 1 is carried by a boss 6 on a pivoted frame 3 and is held up to its work by a pivoted lever 10 one end of which rests on a cam 22 rotated in synchronism with the work-holding table 7 whereby the tool is allowed to move away from the work-table during a portion of the rotation thereof. Coupled to the pivoted frame is a pantograph lever system the pointer 4 of which is adapted to traverse a cam member 5 rotationally and slidably mounted on a shaft 12 ; the pointer by reason of the cam form moves to and fro radially with respect to the shaft 12 and by reason of the grooves 16 oscillates about a mean position parallel to the shaft 12. The drive for the cam member is by means of pinion 15 in engagement with a long pinion 14 on a shaft 13 which is geared to the main shaft 20 from which is also taken the drive 25 .. 28 for the work-table 7. The engraving of each character is accomplished during a single revolution of the copy cam but the actual engraving operation takes place during only three-quarters of such revolution, the tool being lifted during the idle quarter revolution. During the idle portion the transfer of the completed work-piece and introduction of the next work-piece of the series is effected. In a modification the copy cam may be made up of a series of individual cams placed side by side. The shaft has an extension on which is carried a non-rotating collar 50 which according to its longitudinal position will engage with one or other of a series of pegs 49 fitted into holes 48 on a cylinder which is adapted to be rotated in steps by gearing 34 from the copy cam shaft. By suitable disposition of these pegs the sequence in which the individual cams are used may be selected.

6. 发明专利

GB249580A Improvements in and relating to scales and cursors for measuring instruments 未知
公开(公告)号：GB249580A
公开(公告)日：1926-03-22
申请号：GB2797424
申请日：1924-11-22
申请人： JOHN DUNLOP LINN
IPC分类号： G01D13/02
摘要： 249,580. Linn, J. D. Nov. 22, 1924. Indicating, optical devices for. - A device to facilitate the reading of the subdivisions of the scale of a measure instrument comprises a casing 2, Figs. 1 and 2, having an object glass 3 adapted to project the image of the graduated scale 1 upon a translucent screen 4 provided with a diagonal ruling. The screen 4 is carried in a cell 5, Fig. 3, having a projection 6 that bears against an eccentric recess 7 in a rotatable ring 8 under the action of springs 9, 10. By this means the diagonal scale is movable parallel to the scale 1 in the direction of its length. The diagonal scale may consist of a single sloping line graduated along its length or comprise a number of spaced sloping lines intersected by lines at right-angles to the graduations of the main scale 1.

7. 发明专利

GB380656A Improvements in or relating to surveyors' ranging poles 未知
公开(公告)号：GB380656A
公开(公告)日：1932-09-22
申请号：GB3345131
申请日：1931-12-02
申请人： COOKE TROUGHTON & SIMMS LTD , JOHN DUNLOP LINN
IPC分类号： G01C15/06
摘要： 380,656. Surveyors' ranging poles. COOKE, TROUGHTON, & SIMMS, Ltd. and LINN, J. D., Buckingham Works, York. Dec. 2, 1931, No. 33451. [Class 97 (ii).] A tubular ranging pole has the external or internal or both surfaces of non-circular section. The sections may be triangular, square, polygonal, elliptical, or corrugated, and the angles or corrugations may be parallel to the axis of the tube or may be helical. The external and internal surfaces may be formed with complementary corrugations so that the thickness of the material is substantially constant. According to a further feature one or more extensions having the same cross - sectional external measurements as the pole are adapted to be attached to the pole by screwed or plain socket fittings. The pole may be provided with an .integral point or a separate point may be fixed to the pole by screws, rivets, soldering, or brazing.

8. 发明专利

GB266226A Improvements in and relating to optical scale reading devices 未知
公开(公告)号：GB266226A
公开(公告)日：1927-02-24
申请号：GB2142426
申请日：1926-08-31
申请人： JAMES SIMMS WILSON , JOHN DUNLOP LINN , EDWARD WILFRED TAYLOR
IPC分类号： G01B11/00 , G01C1/02 , G01C1/06 , G01D13/10
摘要： 266,226. Wilson, J. S., Linn, J. D., and Taylor, E. W. Aug. 31, 1926. Indicating, optical devices for.-A device for determining the mean reading of two scales or scale images disposed adjacent to one another comprises a translucent diagonal scale displaceably mounted relatively to the main scales and provided with a reading index line or lines extending from the zero indication of the scale and parallel to the main indications. The diagonal scale is graduated so that a minute division on the scale subtends two minutes on the main scales; it is marked or engraved on a sheet of glass 1, Fig. 1, mounted in an eye-piece frame 2 and adjustable by means of a knob 3. As shown in Fig. 2, the diagonal scale is constituted by lines 8 - - 10 with reading index lines 11 at one end which can be brought into coincidence with the nearest coarse graduation oi the projected main scales 4 or 5. The true mean reading is obtained on the diagonal scale by setting the actual or virtual index 7 to the left of the lines 11 and by reading to the lower scale division immediately to the left of the index 7. The diagonal scale may be twice the length of any two coarse graduations to avoid errors in reading and it may be displaceably mounted in two directions at right angles so as to bring it to the position shown in Fig. 8 thereby facilitating the reading of the minute divisions. The diagonal scale may take the form of a single inclined line 11, Fig. 9, subdivided by lines 12. In use with circular main scales the lines 10 of the diagonal scale will not be parallel but will radiate in accordance with the curvature of the main scales.

9. 发明专利

GB234578A Improvements in or relating to surveying instruments 未知
公开(公告)号：GB234578A
公开(公告)日：1925-06-04
申请号：GB716924
申请日：1924-03-20
申请人： ALFRED TAYLOR , JOHN DUNLOP LINN
IPC分类号： G01C17/12
摘要： 234,578. Taylor, A., and Linn, J. D. March 20, 1924. Miners' dials.-In a miners' dial &c. having a telescope mounted to turn in azimuth and a stationary compass ring &c., a supplementary lens C' is provided which is detachably connected to the telescope A at the end functioning as the objective when it is desired to read the graduations on the ring B, the focal length of the lens being equal to its distance from the ring, so that an observer looking through the other end of the telescope sees a clear magnified image of the graduations. The lens C is carried by a detachable mount C to which may also be hinged a mirror C for illuminating the ring B. The telescope A is of the unit magnification type comprising two similar lenses A , A separated by a distance equal to twice the focal length of either, so that either lens can be used as the objective when sighting distant objects. Specification 215,981 is referred to.

10. 发明专利

DE541273C 未知
公开(公告)号：DE541273C
公开(公告)日：1932-01-09
申请号：DE541273D
申请日：1930-05-13
申请人： COOKE TROUGHTON & SIMMS LTD , JOHN DUNLOP LINN
IPC分类号： F16M11/16

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