Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.


  1. Advanced Patent Search
Publication numberUS899043 A
Publication typeGrant
Publication dateSep 22, 1908
Filing dateJun 14, 1907
Priority dateJun 14, 1907
Publication numberUS 899043 A, US 899043A, US-A-899043, US899043 A, US899043A
InventorsJesse Harris
Original AssigneeCentral Lab Supply Company
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Recording instrument.
US 899043 A
Previous page
Next page
Description  (OCR text may contain errors)

Y 0 .N T- HM um 1U NRW. RMD RNB A u HGP 2mm@l Td mm GA EN BL P ,P A

om. o? 9m INE 28 2L. Lhwmx. @n Sm dn. m a D..


Z 7 z; @Hoz/14a Witwe/s .wo


Patented sapt. 22, 1908.

a sums-ausm n.'

UNITED STATES Pfifrnnr or'rio'ia.



Patented sept. 22, 190e. *i

Application filed I une 14, 1907. Serial No. 378,954.

Y To all whom it 'may concem:

the county of Tippecanoe and State of 1n-y diana, have invented certain new and useful Improvements in RecordingInstruments, of which the following is a spcciiica tion.

. The present invention is directed more especially to those parts of recording ineasuring lnstruments which have to do with the marking device roper, by which the 'record is made upon tie record-:receiving surface, and to the means for holding and supplying the recording fluid to the said marking device.

The said invention consists further in the structural details hereinafter described and more particularly pointed out in the accompanying claims.

In order to more particularly describe my said invention, reference Will be had to the accompanying drawings, wherein:-

Figure 1, represents in top plan, a specific embodiment .of my invention and related y parts of the recording instrument; Fig. `2, a

central vertical section of the saine partly iii elevation; Fig. 2a, a detail plan view, partly in section, showing the manner of pivoting the pointer; Fig. 3, a detail top plan view of the recording pen and av part of the tube for supplying iiuid thereto; Fig. 4, avertical central section through the portion of the tube shown in Fig. 3, showing the said pen in side elevation; Fig. 5, a side elevation shoning a modified forni of ink reservoir embodying my invention; Fig. 6, a top plan view of the same; Fig. 7, a top plan view ofv the bracket for supporting said ink receptacle; Fig. S, a side elevation showing an alternative arrangement for adjusting the ink receptacle shown in Figs. 5 and 6; Fig. 9, a fragmentaijv top plan view showing a 'form of ink reservoir locatedAv beneath the pointer; and Fig. 1G, a vertical central section of said reservoir with related parts in elevation.

Reterring to the accompanying drawings, 1, represents the magnet; 2, the moving coil; 3, the pivot spindle of said coil; 1, one

of the pivot bearing screws forsaid spindle; 5, the su porting bracket for said screw; and l6, one o thetorsional hair springs attached .to adjusting arm 7, of an electrical measuring .instrumentsuch for example as the Well known Easton voltmeter or ammeter.

My invention consists in providing such an nstrument or anyvother form of inessuring instrument to which the same may be applied, with certain recording mechanism which consists, among other parts, in the specific form of the invention shown, of a pointer comprising an arm 8, mounted by pivots 9 on the spindle 3, the said arm being provided with a ring or collar portion 10 which carries the iivots 9 and through which extends the spindle 3. The mounting of the arm 8 permits angular movement thereof in two directions g radially of the axis of spindle 3 and in a direction at right angles thereto. One extension of the arm S is provided with a spring 11 made fast thereto and resting on the frame of the coil 2, the said spring acting in opposition to the downward movement of that end of the arm. The other extension of the arm is .provided with an adjustable counter-balance 12. in any suitable manner, as by passing through a collar 13 at one end of said arm, and litting the said vcollar tightly, is an elongated tube 14, of metal, hard rubber or other suitable material. This tube, in the case shown, forms a stili or rigid extension 15, beyond one end of thcvarni 8, while the portion of the tube extending in the opposite direction is arranged to dip into a reservoir carPy'- ing ink or other suitable recording luid. n the form of thc invention Shown in Figs. 1 and 2 this reservoir consists of a receptacle 16, made fast in any suitable manner to a bracket 17 mounted fast on the bracket 5 in such manner as not to interfere with the pivot'screw 4 or the adjusting arm 7 of the moving coil system. The tube 14 is arranged to dip into the fluid 18 within said recep tacle without engaging thc said receptacle and in such manner that thc longitudine. axis of the portion 19 of said tube thus dipping into said fluid will coincide substantially with a continuation of the axis of the moving system, or, in other words, the axis about which the said tube is mounted for angular movement radially. By this arrangement the radial angular movement of the tube 14 caused by the rotation of the moving system becomes substantially zero at that ortion which passes into the recording Hui The recording fluid therefore has no ei'ect on' the movement of the pointer, which is a decided advantage.

The tube 14 conducts the recording fluid by siphoning from the receptacle 16 to. the

Secured to this arm 8 1 i l i i plug 20 inserted in the free end of the tube extension 15, and provided with a curved recording oint 21. The plug 20 is divided centrally t rroughout almost its entire length by a slit 22, and cut away as at 22 for thc en- A trance. of the recording fluid into said slit.

The recording fluid entering the slit 22 will be fed to the point of said pen by capillary action.

In Figs. 1 and 2, I have shown my invention applied to that type of instrument such for cxamule as shown and described in U.` S.

Patents ios. 807,518 and 348,329, granted to C. E. Vawter, Jr., in which the en or recording point is movable latera ly by a pointer near the surface of, though normally out 'of engagement with, a record-receiving strip or sheet which is made to pass by suitl able mechanism over a supporting plate, and

the supporting plate therefor; 26 and 27,


feed ro ers acting to cause said record-strip or sheet to pass from a roll 28 over said plate; 29, clock or other suitable mechanism for actuating said rollers; 30,- the armature secured to the pointer; and 31, the magnet for actuating the pen through the medium of said armature. In the case illustrated, this armature consists of a small iece of iron adapted to slip over one end o the tube eX- tcnsion 15 and made fast thereto, the said armature having downward extensions 32 adapted to pass over the poles of said magnet.

The spec-inc form of magnet shown consists of a core 33, oi iron forminffa trough extending lengthwise in the are ol a circle, and U-sha ed in cross section, in which trough is laid t 1e exciting coil 34. This coil extends between the sides of the trough and alongside and close to the outside of one. of said sides, as shown. The magnet may be supported in any suitable manner, such for example, as being screwed to studs 35 on the bottom of the plate 25, one of said studs only eing shown, and held between said plate and a cross piece 35. The exciting circuit 37 of said magnet may be interrupted at suitable intervals b v any desired circuit-intel ru ting means, a form of such means being in icated in the drawing by the spring contact 33 and notched wheel 39, connected in circuit 37, and the said wheei'39 operated by the mechanism 29. The circuit 37 is alternately completed and linterrupted by the points of the teeth of the wheel 39 passing successively into and out of engagement with the contact 3S as the said wheel rotates.

In Figs.v5 to 7, inclusive, I have shown a Voir as shown.

modified form of the ink reservoir and means for supportlng the same. In this case the rescrvo1r 1s made of such sha e as to form two chambers 40 and 41 -w lich connect through an elorrated assaffe 42 the sides P. D I

porting bracket'45-which lhas an extension 46 provided with upwardly extending arms 47,adapted to engage t-he sides of the reser- The bracket is supported upon studs or uprights 48, 49 mounted on Abracket 5 on opposite sides of the bearing screw 4. By mounting the ink reservoir in this manner it may be tilted up or down on its pivots, as shown in dotted lines in Fi?. 5, and held in the desired position by the friction of the arms 47. By thus varying the elevation of chamber 40 the flow of the ink to the pen may be regulated'. The tiltinvvof thereservoir may be effected by means oian adjusting screw 50 mounted 1n an arm 51 taking the place of arm 46 and forming an extension on a bracket 52 otherwise similar to the bracket 45, the -reservoir being held down upon said screw by a small sprin 53. Also, instead of mounting the reservoira ove the level of the pen and siphonirig the ink to the en, I may locate the reservoir rbelow the leve of the pen and feed the ink to the pen through the tube by capillary action. In Figs. 9 and 10 I have shown one way in which this may be done, where 54 represents the ink reservoir which, in the case shown, is inA the form of an arc sha ed trough provided with a sup orting brac ret 55 having a slot 56 therein t irough which passes an attaching screw 57 by which the said reservoir may be adjnstably secured to the magnet 1. The tube 14, in this case, di s down into the ink 58 or other recording uid in the reservoir and takes the said liquid up by capillary action to the pen'. By .means of the slot and screw 'connection shown, or other suitable means the reservoir may be raised or lowered and thus adJusted to keep the lnk substantilly at the same level without adding fresh 1n Having thus described my invention, what I claim is:-

1. A recording measuring instrument, comprising a system mounted for angular movement on an axis, an arm pivoted on said axis, angularly movable by said system laterally and movable upon said pivot in a direction substantially at right angles to said lateral movement, a reservoir for recording fluid, a tube secured to said arm and adapted to dip at one end into said reservoir out of contact therewith and movable by said arm in said reservoir, on an axis coinciding sub stantially Withrthe axis of said system, said tube adapted to format its other end a rigid extension to said arm, a pen attached to said tube to receive recording fluid therefrom, an

70 of the chamber 41 being held between two'- pivots 43 mounted in uprivhts 44 on a sup*-l armature attached to said extension, and a magnet in operative relation to said armature.

2. A recording instrument, comprising a reservoir for recording fluid, a pointer mounted for angular movement radially about a given axis, said pointer comprising a pen located at its end distant from said axis, and a tube connected to said pen to feed fluid thereto from said reservoir, said tube dippin into said reservoir in line with said axis an rotatable therein longitudinally about a continuation of said axis, the 'relative lateral motion between said tube and the fluid in said reservoir thereby becoming substantially zero.

3. A recording instrument, comprising a reservoir for the recording fluid, adjustably mounted to vary the feed of said iuid, a pointer mounted for angular movement radially about a given axis, said pointer comprising a pen located at its end distant from said axis, and a tube connected to said pen to feed fluid thereto, from said reservoir, said tube dipping into said reservoir in line with said axis and rotatable therein lonoitudinally about a continuation of said axis, the relative lateral motion between said tube and the fluid in said reservoir thereby becoming substantially zero.

4. A recording'instrument, comprising the moving systemof a measuring instrument, a reservoir for recording fluid, a pointer mounted for angular movement radially about a given axis by said system, said pointer comprising a plvoted arm, a tube carried by said ,arm anddipping into said reservoir in line with said axis and rotatable therein longitudinally about a continuation of said axis, the relative lateral motion between said tube and the fluid in said reservoir thereby becoming substantially zero, and a pen connected to the end of said tube distant from said reservoir.

5. A recording instrument, comprising a moving system, a recording fluid contaiumg reservoir, recording means movable by said system and comprising a recording point and fluid conducting means movable therewith relatively to said reservoir and adapted to convey fluid from said reservoir to said point, the said reservoir being supported independently of said recording means, and the said fluid conducting means dipping into the fluid in said 'reservoir substantially in line with the axis of the moving system so that the lateral movement of said fluid conducting means due to the movement of said system is zero within said fluid. A .l

In testimony Whereofl affix mysignature in presence of two witnesses.


Witnesses: i


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2591138 *Feb 15, 1947Apr 1, 1952Times Facsimile CorpFacsimile apparatus employing a stylus
US2626201 *May 28, 1947Jan 20, 1953Westinghouse Electric CorpRecording instrument pen mechanism
US2646336 *Apr 21, 1948Jul 21, 1953Murray W EdinburgDirect writing electrocardiograph
US2665965 *Oct 24, 1949Jan 12, 1954Bendix Aviat CorpStylus moving and guiding structure for electrical recorders
US2950164 *Dec 8, 1955Aug 23, 1960Gen ElectricRecorder
US3146058 *Jul 6, 1961Aug 25, 1964Esterline Angus Instr CompanyRecording pen and ink supply system
US3348235 *Jun 17, 1966Oct 17, 1967Nippon Electric CoRecording pen assembly
US4136346 *Aug 22, 1977Jan 23, 1979Gould Inc.Recorder pen with ink jet writing device
Cooperative ClassificationG01D9/16