US1720226A - Marking device for recording apparatus - Google Patents

Description

July 9, 1929 D. R. LovEJoY MARKING DEVICE FOR RECORDING APPARATUS Filed April 6, 1925 llll lllull //V VE/V TOR fr l l s l s i l I I l l i l s l I I I l 5 l Patented July 9, 1929.-

UNITEn STATES PATENT orFlcE. Y

AIDIl'IYllVlIT'l R. LOVEJOiiY, OF FRENEAU, NEW JERSEY; SUSAN LOVEJOY NEIDLINGER -EXE(.`JU"..IB,IX OF SAID DIMMITT R. LOVEJOY, DECEASED. i

MARKING DEVICE FOR RECORDING APPARATUS. i'

Application filed Apri1 6, 1925. Serial N20. 21,141.

My invention relates to improvements in recording means, and the saine has for\ its object more particularly the provision of a marking device capable of continued use for long periods of time without requiring attention.

Further, said invention-has for its object Vthe provision of a device of the character specified which is capable of use for long periods of time .without requiring the renewal of the supply of writing or marking fluid.

Further, said invention has for its object the provision of a device of the character specified in which the evaporation or drying up of the marking fluid will' be prevented, and the fluid maintained at a proper consistency and suitable for immediate use.

Further, said invention has for its object the provision of a marking device in which the feedingof the fluid is so controlled that the tendency to feed too rapidly and cause the same to blot will be obviated.

Further, said invention has for its object the provision of a marking device in which a surplus of fluid is maintained adjacent to the marking point or nozzle whereby to insure the proper production of a record.

Further, said invention has for its object the provision of a marking device which will be operative at all times to produce a mark or indication upon a chart.

Further, said invention has for its object the provision of a marking device which will insure a constant and uniform supply of writing fluid to the 'marking point or nozzle thereof.

Further, said invention has for its object the provision of a marking device, and a support therefor whereby the former will be maintained duly in operative position at all times.

Other objects will in part be obvious, and in part be pointed out hereinafter.

To the attainment of the aforesaid objects and ends my invention consists in the novel details of construction, and in the combination, connection and arrangement of'partsV hereinafter more fully described and then pointed out in the claims.

In the accompanying drawings- Figure 1 is an end view showing one forni of stylus constructed according to and embodying my said invention, the same being shown mounted' upon a recording instrument;

Fig. 2 is a side View of the device as shown in Fig. l; j

Fig. 3 is an enlarged side view of the stylus;` l

Fig. 4 is a central sectional view of the stylus as shown in Fig. 3, and

Fig. 5 is an enlarged detail' side view, partly in section, of the holding means for the stylus.

Referring to the drawings, there is shown a recording instrument enclosed within a cas ing 10. It will. be understood that the stylus forming the subject of this invention may be applied to any recording instrument wherein a stylus cooperates with a recording chart. The recording instrument shown comprises a clock mechanism 11 operating a train of gearing 12, 13, to rotate a shaft 14 upon which is formed a worm 15. A-carriage or travelling member 16 is threaded upon said worm and is held against rotation thereony by a bar 17 engaging-one end or portion of said carriage 16, so that rotation of the worm causes amovement of the carriage longitudinally thereon and of a stylus 20, mounted on said carriage, to move across a chart 21, rotated by said train of gears, tol'eave an ink marking upon the chart.

The stylus 20 comprises essentially a receptacle or barrel portion 25 and a marker portion 26. The receptacle 20 is preferably tubular in form into thev top of which is fitted a cap 28, preferably screwethreaded therein. vThe marking fluid, such as ink 29, as hereinafter described, within the barrel is fed upwardly by absorption by means of a wick 30, said wickextending upwardly through a tube 31 to the marker portionv 26, the end of said wick being exposed to the air, as shown in the drawing, and as hereinafter described. The tube 31 extends through cap 28 and has mounted on its upper end the marker portion 26. The stylus is mounted, by means to be hereinafter described, so that the barrel hangs substantially vertically at al1 times, and the marker portion is mounted upon tube 31 so as to engage the recording chart' substantially normally. A branch passage extends axially of the marker portion and communicates with the tube 31 andthe wick therein, so that CII ink fed upwardly by said wick enters passage 35 and passes therethrough to the marking point 37 of nozzle 36. The passage 35 is preferably constructed as shown 1n the detail drawing of Fig. 4. A tube 48 has inserted therein a short nozzle 36 preferably iliade of a hard metal or alloy, such as platinum-iridium. This nozzle is relatively short and besides fitting the tube 48 tightly is further secured against pushing back by' a drop of solder 50". tube 48 is also inserted another tube 49 having approximately the same bore as the nozzle 36 and a slightly smaller outside diameter so that it fits relatively loosely into the bore of tube 48. The tube 49 projects rearwardly beyond the end of tube 48 and passes through a hole 50 in the wall. of the wlck tube 31 and. makes Contact with the wick therein. The bores of tube 49 and nozzle 36 are of capillary dimensions, preferably about .005, and the ink will readily fiow from the wick through this capillary passage until it reaches the tip 37 of the nozzle 36. This channel is substantially horizontal and the surface tension which draws the ink through this passage is not required to lift the ink against the force of gravity, this latter Work being done by the wick. The tube 48 fits the bore of the marker barrel 26 with sufficient friction so as to be retained; thereby but is removable for cleaning and replacement. The rearward motion of this tube 48 is definitely limited by striking against the outside of the tube 31, the hole 50 being too small to permit its further inward movement.

To insure a long continued supply of ink with a single filling of the reservoir, I prefer to use a suitable intense color, such as eosine or aniline violet dissolved to'saturation in a hygroscopic medium, such as pure glycerine. The reservoir being filled with an ink of this character, the wick carries the thick fluid up to its top. At this point the upper end of the Wick being exposed tothe air, the hygroscopic ink takes up water therefrom and is consequently thinned to acertain extent and correspondingly increased in volume. This more uid ink fiows readily through the capillary channel 35 and does not overflow at the orifice 37 on account of the restraining surface tension at that point, but is readily taken up by the paper chart when in contact therewith. The outside of the nozzle 36 is purposely made slightly greasy by rubbing it with the fingers, but the bore thereof4 and the whole of channel 35- have all traces of grease carefull removed. If this is not done the ink wi l not flow steadily.

A vent pipe 40 is providedto equalize barometi'ic changes, and to relieve the vacuum which would otherwise restrict the flow of ink upwardly through the wick.

Into the rear end of the The bore of the vent pipe 40 is larger than that of channel 35, being preferably about .020'

To mount the stylus upon its carriage so that the receptacle or barrel 25 will always be supported vertically, and the-marker rest substantially normally to the surface of the recording chart, the st lus is rotatably mounted in a bore forme in a sleeve 42 at thel end of an arm 41 of the carriage 16, so that the weight of the receptacle 25 will serve to maintain the stylus normally vertical. To prevent movement of the stylus in and out of its mounting there may be provided a spring 45 fixed at one end in the carriage 16 and having its other end extending through a slot 46 in sleeve 42, to enable it to lodge in a peripheral groove 47 in the marker portion 26. The marker portion and the entire stylus are thus held duly in position within the sleeve 42, without interfering with the rotary movement of the stylus in order to insure the receptacle or barrel 25 being supported in vertical position at all times.

The above described stylus by its economical feeding and utilization -of the marking fluid, and by the use of a hygroscopic ink is capable of use for many months with but a single filling. y,

I have herein described a preferred embodiment of my invention, but it will be understood that various changes maybe made within the scope of the annexed claims.

Having thus described my said invention what I claim and desire to secure by Letters Patent is:

1. A device of the character described comprising a receptacle for holding a marking fluid, a tube having one end in communication with said receptacle, means within said tube for conduct-ing the fluid there-- through from said receptacle, and a marker mounted on and adjacent the other end of said tube, and having a capillary passage communicating with said tube and said conducting means, substantially as specified.

2. A device of the character describedcomprising a receptacle for holding a marking fluid, a tube having one end secured within said receptacle, a Wick disposed within said tube lfor conducting the fluid therethrough from said receptacle, and a marker l end of said tube being open to expose said wick to the air, and a. marker mounted on said tube intermediate the ends thereof; said marker having a passage communicating with said tube for withdrawing the fluid from said wick adjacent to the exposed end thereof, substantially as specified.

4. A device of the character described comprising a receptacle-for holding a mark- 4ed on and adjacent the other end of said tube; said marker having a passage communicating with said tube, and a wick within said tube for conveying the fluid from said receptacle to said passage, substantially as specified.

6. A device of the character described comprising a receptacle for holding a marking fluid and adapted to be mounted substantially vertically, a vertically disposed tube having one end in communication with said receptacle, a marker mounted on and adjacent the other end of said tube and substantially horizontally; said marker having a capillary passage communicating with said tube and extending to the outer end of the marker, and means in said tube for conducting the fluid to a point above said passage to provide a surplus of fluid, substantially as specified.

7. A device of the character described comprising a tubular receptacle for holding a marking fluid, a vertically disposed tube having one-end in'connection with said receptacle, a horizontally disposed marker mounted on and adjacent the other end of said tube; said marker having a capillary passage communicating with said tube, and a wick in said tube for conducting the fluid to a point above said passage to provide a surplus of fluid, said wick being exposed to the air for the purpose of allowing it to take up moisture therefrom, substantially as specified.

8. A device of the character described comprising a receptacle for holding a hygroscopic marking fluid', a tube having one end in communication with said receptacle, a wick disposed within said tube for conducting tlsie fluid therethrough from said receptacle; said tube being open to expose a portion of said wick to the air for the purpose of allowing it to take in moisture therefrom, and a marker having a passage communicating with said tube for withdrawing the fluid from said wick adjacent to the eX- posed portion thereof, substantially as specified. f

9. A device 0f the character 'described comprising a closed receptacle forholding a hygroscopic marking fluid, a tube secured within said receptacle, a wick disposed within said tube lfor conducting fluid therethrough from said receptacle; said tube being open at its outer end to expose the end only of said wick to the air for the purpose of allowing it to take up moisture therefrom, a marker communicating with said tube near its outer end for withdrawing the fluid from said wick, and an air vent in said receptacle, substantially as specified.

10. A device of the character described comprising a tubular receptacle, a cover therefor, a tube mounted in said cover andl arranged partly within and partly without said receptacle, a wick disposed in said tube, a member secured to said tube and extending laterally therefrom and provided with a passage communicating with said tube, and a nozzle at the outer Iend of said member having an opening therethrough communicating 'with the passage in said member, substantially as specified.

ll. A device of the character described comprising a tubularV receptacle, a cover therefor, a tube mounted in said cover and arranged partly Within and partly without said receptacle, a wick disposed in said tube, a member secured to said tube and extending laterally therefrom and pro-vided with a pas- Sage communicating with said tube, a nozzle at the outer end of said member having an opening therethrough communicating with the passage in said member, and an air vent provided in said cover, substantially as specified.

12. A device of the character described comprising a tubular receptacle, Va cover therefor, a tube mounted in said cover and arranged partly Within and partly without said receptacle, a wick disposed in said tube, a member secured to said tube and extending laterally therefrom and provided with a passage communicating with said tube, a nozzle at the outer end of said member having an opening therethrough communicating with the passage in'said member, and a tube secured in said cover and communicating with the interior of said tubular receptacle; said tube having its upper end extending upwardly above said cover, substantially as specified.

13. A device of the character described comprising a. supporting member, a receptacle, and a marker connected to said receptacle at the upper end thereof and extending laterally relative thereto; said marker being ljournaled horizontally in said supporting member for movement about its longitudinal axis, whereby to support said receptacle in a position maintained vertical by gravity, substantially as specified.

14. A mounting for a device of the character described comprising a supporting member, said device having a portion journaled in said supporting member, and means permitting of a rotary movement of said device in said supporting member while preventing withdrawal of said device therefrom, said means comprisingr a locking member carriedby said supporting member, said portion having a peripheral groove in which said locking member engages, substantially as specified.

15. A mounting for a device of the char:- acter described comprising a supporting member, said device having a receptacle ada ted to be positioned substantially vertica ly, and a marker adapted to be positioned substantially horizontally, said marker. being journaled in said supporting member, and means for preventing movement of said marker, axially in said member, substantially as specified.

16. A mounting for a device of the charl acter described comprising a supporting member, said device having a tubular receptacle adapted to be positioned substantially vertically and a marker adapted to be positioned substantially horizontally; said marker being journaled in. said supporting member, and means for preventing movement of said marker axially in said member, said means comprising a spring member fixed at one end to said supporting member, and said marker having a peripheral groove with which the other end of said springmember engages, substantially as specified.

17. A mounting for a device of the character described comprising a supporting member, said device having a tubular receptacle adapted to be positioned substantially vertically and a marker adapted to be positioned substantially horizontally, said marker being journaled in said supporting member, and means for preventing movement of said marker axially in said member, said means comprising a spring memberfixcd at one end to said supporting member and said marker having a peripheral groove adapted to receive the free end of said spring member, said supporting member having a slot to receive the free end of saidspring memberI to said marker, substantially as specified.

A18. A device of the character described comprising a receptacle for 'holding' a marking fluid, a tube having one end in communication with sa'd receptacle, and a marker mounted adjacent the other end of said tube, said marker having a feed passage therein, a tube removably mounted in said passage, and a nozzle mounted in said second tube, substantially as specified.

19. A. device of the character described comprising a receptacle for holding a marking fluid, a tube having one end in communication with said recept-acle, and a marker mounted adjacent the other end of said tube, said marker having a feed a tube removably mounted-1n said passage, afeed-tube loosely mounted in said second tube and communicating with said firstnam'ed tube, and a nozzle mounted in said second tube,"substantially as specified.

20. A device of the character described comprising a receptacle for holding a marking fluid, a tube having one end in communication with said receptacle, and a marked mounted adjacent the othery end -of said tube, said marker having a feed passage therein, a wick in said tube for conducting thev fluid to said passage, a tube removably mounted in said passage, a feedtube loosely mounted in said second tube, said first tube having an opening through which said feed Vtube extends to engage said wick, and a nozzle fixed in said second tube atl the outer end thereof, substantially as specified.

21. A' device of the character described comprising a receptacle for holding a marking fluid, a tube having one end projected into and secured to said receptacle, the other end of said tube being open to atmosphere, a wick extending through said tube from end to end and having one end projected into the receptacle below the tubes end, and having its other end exposed to atmosphere aty the open end of said tube, a marker mounted on said tube adjacent said other end, said marker comprising a body having an aperture to fit on said tube and havmg a' capillary duct leading from the wick adjacent its exposed end to the outlet end of the marker.

22. A device of the character described comprising a receptacle'for holding a marking fluid, a tube having one end projected into and secured to said receptacle, the other end of said tube being open to atmosphere, a wick extendingthrough said tube from end to end and having one end projected into the receptacle below the tubes end, and

having its other end exposed to atmosphere at the open end of said tube, a marker mounted on said tube adjacent said other end, said tube having an opening in its side wall adjacent said other end, said marker having a capillary duct registering with said opening for thev purposes specified.

Signed at the city of New York, in the county and State of New York, this 16th day of May, one thousand nine hundred and twenty-three.

- DIMMITT R. LOVEJ OY.

assage therein,

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