US1408585A - Phonographic machine - Google Patents

Phonographic machine Download PDF

Info

Publication number
US1408585A
US1408585A US372745A US37274520A US1408585A US 1408585 A US1408585 A US 1408585A US 372745 A US372745 A US 372745A US 37274520 A US37274520 A US 37274520A US 1408585 A US1408585 A US 1408585A
Authority
US
United States
Prior art keywords
cylinder
carriage
machine
sound
box
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US372745A
Inventor
Charles M Goldstein
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
COLUMBIA GRAPHOPHONE MANUFACTURING Co
Original Assignee
COLUMBIA GRAPHOPHONE Manufacturing CO
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by COLUMBIA GRAPHOPHONE Manufacturing CO filed Critical COLUMBIA GRAPHOPHONE Manufacturing CO
Priority to US372745A priority Critical patent/US1408585A/en
Application granted granted Critical
Publication of US1408585A publication Critical patent/US1408585A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B25/00Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing, e.g. dictating apparatus; Combinations of such apparatus
    • G11B25/02Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing, e.g. dictating apparatus; Combinations of such apparatus using cylindrical record carriers

Definitions

  • SHhiTS- Snow tom fiber/es 5o/dsfe/u PHONOGRAPHIC MACHINE.
  • y invention relates to honographic machines of the t pe used Ear dictation purposes.
  • machines of. this character the spoken words are engraved by a vibrating stylus in a wax tablet which is usually in the form of a cylinder. If reference is desired to be made to the engraved words for any pwpose, as by noting that a correction should made at a certain point, additional spoken words are recorded to that effect and a sig: nal for the benefit of the transcriber made at the point of desired correction.
  • This signal ordinarily includes a card having a printed scale corresponding in graduations with that on the machine and alon which a pointer travels in unison with the supporting carriage of the sound-box, so that a mark or check at a point on the card scale will call attention to a correction at a corresponding point in the wax tablet.
  • My invention aims to improve devices of the character indicated by making the indicating device susceptible of attachment to existing machines without necessitating structural rearran ments therein.
  • Another object of myinvention is to embody the above'feature in a pleasing mechanical arran ement.
  • the importance of this feature wifi be more fully appreciated when it is borne in mind that the machine is always in full view of the user.
  • Other minor 0 preferably take the form of invention is to pro-' jects will appear from the detailed description of the mventio My invention consists,
  • a bracket which overhangs the vided with openings which serve as guides for means adapted to make contact with the index sheet on the cylinder.
  • These means ointed, axially movable prick punches.- he cylinder is prferably mounted on the sound-conducting head of the travelling carriage and the means for rotating it preferably comprise a rack and pinion connection so arranged that the cylinder may be rotated counter-clockwise.
  • Fig. 1 is a vertical section taken on line 11 of Fig. 3, suflicient arts of a phonographic machine being il ustrated to show the application of my invention
  • Fig. 2 is a front elevation of my invention looking in the direction of the arrow 2 in Fig. 1, the mechanical marking means being cylinder and is rom t i
  • Fig. 3 is a top plan of Fig. 1, looking in the direction of arrow 3;
  • Fig. 4 is a vertical section taken on line 4-4 of Fig. 1
  • Fig. 5 is a section taken on line 5-5 of Big 6;
  • ig. 6 is a top plan of Fig. 5, parts being broken away and parts being in section;
  • Fig 7 is s. section on line 7-7 of Fig. 4;
  • the base 10 of the machine rests on a motor box 11 in which is contained mechanism (not shown) forrotating the record tablet 12 and for moving the sound-box carria e 13 longitudinally thereover.
  • the tab et 12 is mounted for rotation in any suitable or preferred manner.
  • a pair of standards 14, 15 Rising from the base of the machine at either end thereof is a pair of standards 14, 15. Extending between these standards is a slotted tube 16, along which the carriage 13 is movable. Thistube is adapted to contain a screw shaft (not shown) for'causing travelling movement of said carriage axially of the cylindrical tablet 12 upon the suitable manipulation of the lever 17, which serves to operatively connect the carriage to said screw shaft.
  • the carriage is prevented from rotating on said tube 16 by means of a-stabilizer arm 18 which is bifurcated at its lower end to straddle a rod 19 extending be tween the said standards.
  • the carriage may be freely moved by hand when the lever 17 is in neutral position.
  • a suitable sound-box 24 which is adapted to be connected to a speakers tube (not shown) by a cored head designated generally meral 25.
  • I mount a cylinder 26 on the head 25 in a manner which permits its rotation thereon.
  • I prefer to effect this mounting by providinga suitable bearing in the form of a sleeve 27 which at its outer end is internally tapered and threaded to receive a complementary tapered and threaded split bushing 28 which serves to lock the sleeve 27 to said head.
  • the cylinder is displacement by any suitable means, as by a hidden, expansible ring 29 confined in an annular groove formed in the cylinder and sleeve in a manner well known in the art.
  • Rotation is imparted to said cylinder by means of a rack and pinion connection, the
  • the rack comprises a comparatively wide bar having oppositely directed angles at its edges. One of these angles is comparatively short and is provided with teeth which mesh with the pinion 30. The other angle is secured to the bar 21 behind the sea e 22 which is thus left visible. In order to provide for the passage of the pointer 23, the rack bar is slotted (see Fig. 3) for a substantial portion of its length.
  • he mechanical marking means preferably take the form of depressible prick punches 32 which are mounted in tubular guides 33. These guides, which overhang the cylinder 26, are supported by an arched bracket 34 on the carriage 13.
  • Fig. 7 also shows the head 25 as bein a separate element adapted to be held in de nite relation to said carriage in any suitable manner, as by screws (one of which is shown in dotted lines in Fig. 1).
  • This bracket it will be observed, rises from the carriage immediately in front of the rack Figs. 5 and 6.
  • This arm has, at one side the outer edge of the cylinder. (See duction and removal of said sheet.
  • a yieldable extension which is adapted to bear against the supporting block 37 in such manner that the arm is pressed tight against the index sheet.
  • a hump on the arm adjacent its pivot serves to limit its angular movement.
  • hese guides have a cut-away portion on either side of the arm 36 to permit the intro- To 1nsert a sheet it is simply necessary to insert one end of the same in the guides and push the sheet on througli until their ends overlie, as in Fig. 6, when the spring arm is brou ht down upon them.
  • the combination wlth the travelling sound-box car-- riage thereof having acored head adapted to be connected to a speakers tube, of a cylinder mounted on said head, means for imparting rotation to said cylinder during the travel of said carriage, and marking means movable toward and from said cylinder.
  • the combination with the travellin sound-box carriage thereof having a cored head adapted to be connected to a speakers tube, of a cylinder mounted on said head, means for imparting rotation to said cylinder durin the travel of the carriage. and a bracket ad acent one e d of said cylinder and in fixe relation to the axis thereof, said bracket car ing markin means movable toward and mm said cy inder.
  • the combination with the travelling sound-box carriage thereof havin connected to a spea ers tube, of a cylinder mounted on said head, a bracket secured to said head ad'acent one end of said cylinder, and in fixe relation to the axis thereof means carried by said bracket permitting impressions to be made on a suitable surface of said cylinder, and means for imparting rotation to said cylinder during the travl of the carriage. 6.
  • the combination with the travelling sound-box carriage thereof having a cored head adapted to be connected to a speakers tube a cylinder mounted on said head, an index sheet adapted to be wound around said cylinder, means for securing said sheet against displacement, and means forimpartin rotation to said cylinder during the trave of said carriage.
  • a cylindrical index sheet:i means in fixed relation to the axis of sai sheet permitting the makin of indications on said sheet, and means or rotating the a head adapted to be said sheet about its 0 lindrical axis during the travel of the carriage.
  • the combination with the sound-box support and record carrier having relative movement between them, a member mounted to rotate about a fixed axis upon the sound-box "support and adapted to' support a correction strip cylindrically disposed about said axis, and means for impartin rotation to said member and correction str p during and proportionately to the relative movement between said support and the record carrier.

Landscapes

  • Pinball Game Machines (AREA)

Description

C. M. GOLDSTEIN.
PHONOGRAPHIC MACHINE.
APPLICATION FILED APR. 10. 1920.
Pa'wnted Mar. 7, 1922.
T E E H A s T E E H s 2 naw/whoa U/ ar/es M 50 Air/eh? C. M GULDSTEIN. PHONOGRAPHIC MACHINE. APPLICATION FILED APR 10, 1020.
Patented Mar. 7, 1922.
SHEET 2.
2 SHhiTS- Snow tom: fiber/es 5o/dsfe/u PHONOGRAPHIC MACHINE.
Specification of Letters Patent.
Application filed April 10, 1920. Serial No. 872,745.
To all whom it may concern:
Be it known that I, CHARLEs M. GoLos'rEIN, a citizen of the Republic of Germany, residing at New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Phonographic Machines, of which the following is a full, clear, and exact description.
y invention relates to honographic machines of the t pe used Ear dictation purposes. In machines of. this character the spoken words are engraved by a vibrating stylus in a wax tablet which is usually in the form of a cylinder. If reference is desired to be made to the engraved words for any pwpose, as by noting that a correction should made at a certain point, additional spoken words are recorded to that effect and a sig: nal for the benefit of the transcriber made at the point of desired correction.
This signal ordinarily includes a card having a printed scale corresponding in graduations with that on the machine and alon which a pointer travels in unison with the supporting carriage of the sound-box, so that a mark or check at a point on the card scale will call attention to a correction at a corresponding point in the wax tablet.
Various devices for incor oration into the machine have been proposed for facilitating the ma of said signals. These devices, however, usually necessitate considerable redesigning of the phonographic machine; Others have the objection of contributing to a complicated appearin machine,a condition which is not desira le in phonographic machines.
My invention aims to improve devices of the character indicated by making the indicating device susceptible of attachment to existing machines without necessitating structural rearran ments therein.
Another ob ect of my vide mechanical marking means in combination with an index sheet arranged inthe formof a cylinder. 7
Another object of myinvention is to embody the above'feature in a pleasing mechanical arran ement. The importance of this feature wifi be more fully appreciated when it is borne in mind that the machine is always in full view of the user. Other minor 0 preferably take the form of invention is to pro-' jects will appear from the detailed description of the mventio My invention consists,
in mounting a cylinder or barrel on the sound-box carsheet on which indications are adapted to be made to indicate various points in the engraved sound tablet. In fixed relation to the axis of said cylinder I mount a bracket which overhangs the vided with openings which serve as guides for means adapted to make contact with the index sheet on the cylinder. These means ointed, axially movable prick punches.- he cylinder is prferably mounted on the sound-conducting head of the travelling carriage and the means for rotating it preferably comprise a rack and pinion connection so arranged that the cylinder may be rotated counter-clockwise.
One of the advantages resulting from mounting the index sheet on a cylinder as said is that there is only a relativel small portion of said sheet ad'aoent said pointer at any given time on whic check marks can be conveniently entered when not mechanically performed. In other words the index sheet slopes downwardly on either side of the pointer resulting in a relativay raised portion adjacent said pointer. hen it is remembered that the lndex sheet is graduated in a manner corresponding to the scale on the machine and that these sheet fraduations are automatically presented in ront of the pointer as the carriage travels, it will be readily appreciated that very little or no op portunity is resented for the incorrect transference t ereto of the scalepointer readings. As alread indicated, however, I preier to provide mec anical marking means.
In the drawings which illustrate the preferred form of the invention, 0
Fig. 1 is a vertical section taken on line 11 of Fig. 3, suflicient arts of a phonographic machine being il ustrated to show the application of my invention;
Fig. 2 is a front elevation of my invention looking in the direction of the arrow 2 in Fig. 1, the mechanical marking means being cylinder and is rom t i Fig. 3 is a top plan of Fig. 1, looking in the direction of arrow 3;
Fig. 4 is a vertical section taken on line 4-4 of Fig. 1
Fig. 5 is a section taken on line 5-5 of Big 6;
ig. 6 is a top plan of Fig. 5, parts being broken away and parts being in section; and
Fig 7 is s. section on line 7-7 of Fig. 4;
In the drawings, only so much of the phonographic machine is shown as is necessary to illustrate the application of my invention thereto.
The base 10 of the machine rests on a motor box 11 in which is contained mechanism (not shown) forrotating the record tablet 12 and for moving the sound-box carria e 13 longitudinally thereover. The tab et 12 is mounted for rotation in any suitable or preferred manner.
Rising from the base of the machine at either end thereof is a pair of standards 14, 15. Extending between these standards is a slotted tube 16, along which the carriage 13 is movable. Thistube is adapted to contain a screw shaft (not shown) for'causing travelling movement of said carriage axially of the cylindrical tablet 12 upon the suitable manipulation of the lever 17, which serves to operatively connect the carriage to said screw shaft. The carriage is prevented from rotating on said tube 16 by means of a-stabilizer arm 18 which is bifurcated at its lower end to straddle a rod 19 extending be tween the said standards. Along said tube and rod the carriage may be freely moved by hand when the lever 17 is in neutral position.
Extendin forwardly from each standard at the top t ereof is a support 20 for suporting a bar 21 which carries a scale 22. ising from the carriage 13 in close proximity to the said scale is a pointer 23.
Incorporated in the carriage is a suitable sound-box 24: which is adapted to be connected to a speakers tube (not shown) by a cored head designated generally meral 25.
p The construction thus far described is the usual and familiar construction of a dict..- tion machine well known in the art.
In giving a mechanical embodiment to my invention, I mount a cylinder 26 on the head 25 in a manner which permits its rotation thereon. I prefer to effect this mounting by providinga suitable bearing in the form of a sleeve 27 which at its outer end is internally tapered and threaded to receive a complementary tapered and threaded split bushing 28 which serves to lock the sleeve 27 to said head. The cylinder is displacement by any suitable means, as by a hidden, expansible ring 29 confined in an annular groove formed in the cylinder and sleeve in a manner well known in the art.
held against axial v This arrangement permits of easy and ready assemblage by permitting the cylinder to he slipped over the sleeve and contributes to a sig itly machine by the elimination of screws and the like.
Rotation is imparted to said cylinder by means of a rack and pinion connection, the
inion 30 being secured to the cylinder at the inner end thereof, and the rack 31 being secured to the scale bar 21 in a manner not to interfere with the functions of the normallyprovided scale and pointer 22 and 23, respectively. The rack comprises a comparatively wide bar having oppositely directed angles at its edges. One of these angles is comparatively short and is provided with teeth which mesh with the pinion 30. The other angle is secured to the bar 21 behind the sea e 22 which is thus left visible. In order to provide for the passage of the pointer 23, the rack bar is slotted (see Fig. 3) for a substantial portion of its length.
It will now be appreciated that as the carriage is moved from left to right along its guides 18 and 19, the cylinder 26 will be rotated about its cylindrical axis in a counter clockwise direction. An index sheet, on the surface of the cylinder, having 'graduations numbered from left to right, will thus present its graduations in synchronism with those of the scale 22. It will be further appreciated that inasmuch as this rotary index sheet is in close proximity to the normallyprovided scale and pointer, there is little or no opportunity for incorrect transference to the index sheet of the scale-pointer reading if the mental and manual method of checkin is employed. I prefer, however, to emp oy mechanical marking means for checking or marking the index sheet.
he mechanical marking means preferably take the form of depressible prick punches 32 which are mounted in tubular guides 33. These guides, which overhang the cylinder 26, are supported by an arched bracket 34 on the carriage 13.
Referring to Figs. 4 and 7 it will be seen that the bracket has laterally projecting feet which are secured to the carriage 13 at spaced points thereon. Fig. 7 also shows the head 25 as bein a separate element adapted to be held in de nite relation to said carriage in any suitable manner, as by screws (one of which is shown in dotted lines in Fig. 1). This bracket it will be observed, rises from the carriage immediately in front of the rack Figs. 5 and 6.) This arm has, at one side the outer edge of the cylinder. (See duction and removal of said sheet.
of its pivot, a yieldable extension which is adapted to bear against the supporting block 37 in such manner that the arm is pressed tight against the index sheet. A hump on the arm adjacent its pivot serves to limit its angular movement.
In order to facilitate the placing of the index sheet around the cylinder, I ')refer to rovide marginal guides 38, 39 on t elatter.
hese guides have a cut-away portion on either side of the arm 36 to permit the intro- To 1nsert a sheet it is simply necessary to insert one end of the same in the guides and push the sheet on througli until their ends overlie, as in Fig. 6, when the spring arm is brou ht down upon them.
When a prick punch is used for making marks in the index sheet, I prefer to provide a narrow annular groove 40 in the cylinder for receiving the point of the punch as it passes through the sheet.
The invention has been described in considerable detail but this is not to be taken as a limitation of the invention, the scope of which is intended to be set out in the claims. I
What I claim as new and desire to secure by Letters Patent is:
1. In a honographic machine, the combination with the travelling sound-box carriage' thereof having a cored head adapted to be connected'to aspeakers tube, of ac linder mounted onsaid head, and means or impartin rotation to said cylinder during the trave of said carriage.
2. In a honographic machine, the combination wlth the travelling sound-box car-- riage thereof having acored head adapted to be connected to a speakers tube, of a cylinder mounted on said head, means for imparting rotation to said cylinder during the travel of said carriage, and marking means movable toward and from said cylinder.
3. In ahonograph the combination with the traveling soundox carriage thereof having a c'ored head adapted to be connected 7 to a speakers tube and a stationary scale-bar disposed longitudinally of the line of travel of the carriage; of a cylinder journaled on said head, and means for impartin rotation to said cylinder during the travel'o said carria e and comprising a rack secured to said 'sca e-bar and 'extendin longitudinally of the line of travel of t e carriage, and apinion atone end of said cylinder and meshmg with saidrack.'
4. In a phonographic machine, the combination with the travellin sound-box carriage thereof having a cored head adapted to be connected to a speakers tube, of a cylinder mounted on said head, means for imparting rotation to said cylinder durin the travel of the carriage. and a bracket ad acent one e d of said cylinder and in fixe relation to the axis thereof, said bracket car ing markin means movable toward and mm said cy inder.
5. In a honographic machine, the combination with the travelling sound-box carriage thereof havin connected to a spea ers tube, of a cylinder mounted on said head, a bracket secured to said head ad'acent one end of said cylinder, and in fixe relation to the axis thereof means carried by said bracket permitting impressions to be made on a suitable surface of said cylinder, and means for imparting rotation to said cylinder during the travl of the carriage. 6. In a honographic machine, the combination with the travelling sound-box carriage thereof having a cored head adapted to be connected to a speakers tube a cylinder mounted on said head, an index sheet adapted to be wound around said cylinder, means for securing said sheet against displacement, and means forimpartin rotation to said cylinder during the trave of said carriage.
7, In a honographic machine, the combination with the travellin sound-box carriage thereof, of a cylih er mounted for travel with said carriage, correction indicating means overhanging said cylinder, an index sheet adapted to be wound around said cylinder, means mountedon said cylinder at one side of said correction indicating means for holding the free end of said sheet against relative dis lacement, and means for rotating said cylinder during the travel of said carriage to bring said first named means on the other side of said correction indicating means.
8. In a honographic machine, the combination with the travelling sound-box carriage thereof, of an index sheet, means sup porting said sheet in the form of a cylinder, and means for rotating said sheet a out its cylindrical axis during the travel of the carriage.
-9. In a honographic machine, the combination with the travelling sound-box carriage thereof, a cylindrical index sheet:i means in fixed relation to the axis of sai sheet permitting the makin of indications on said sheet, and means or rotating the a head adapted to be said sheet about its 0 lindrical axis during the travel of the carriage.
10. In a phonographic machine, the coinbination with the travelling sound-box carr'iage thereof, of a cylindrical member mounted to. travl with said carriage, means at one end of said cylinder for imparting rotation to said cylinder, and correction indicating means mounted adjacent said end of the cylinder and in fixed relation to the axis thereof.
11. In a phonographic machine the combination with the travelling soun -box carriage thereof, of a cylindrical member mounted to travel with said carriage, means for imparting rotation to said member, and means disposed in a plane of the axis with relation to the cylindrical member for mak ing indications.
12. In a phonographic machine, the combination with the travelling sound-box carriage thereof, of a cylindrical member mounted to travel with said carriage and adapted to support a correction stri means for imparting rotation to said mem er, and means in fixed relation to the axis of said cylinder, for making indications on said correction strip.
13. In a phonographic machine, the combination with the travelling sound-box carriage thereof, of a cylindrical index member adapted to support a cylindricall disposed correction strip upon its cylin rical surface, means for rotating said member synchronously with the travel of said carriage, and means permitting the making of an indication on said correction strip in a fixed position relatively to the cylindrical axis of said member.
14. In a phonographic machine, the combination with the travelling sound-box carriage thereof, of a cylindrical correction strip mounted for travel with said carriage, means for rotatin said correction stri as the carriage trave s, and means in a xed position relatively to the axis of said correction strip permitting the making of indications on said correction strip.
15. In a phonographic machine, the combination with the travelling sound-box .carriage and scale and pointer thereof, of a member adapted to serve as an index of the sound tablehconterits, means for supporting said member in a sloping position on either side of said pointer, and means for imparting relative movement between said pointer and member in synchronism with, the travel of said carriage whereby a relatively raised portion of said index member is continuously being presented adjacent said ointer.
16. In a honographic machine, t e combination with the sound-box support and record carrier having relative movement between them, of a cylinder adapted to support a correction strip, and means for impart ing rotation to said cylinder during the relative movement between the support and the record carrier.
17. In a honographic machine, the combination with the sound-box support and record carrier having relative movement between them, of a cylinder adapted to support a correction strip, means for imparting rotation to said cylinder during the relative movement between said sup ort and record carrier, and an indicator disposed in indicatin relation to a line upon said cylindrica surface parallel to the axis thereof.
18. In a honographic machine, the combination with the sound-box support and record carrier havin relative movement between them, of a cy inder adapted to support a correction stri means for impartmg rotation to said cy inder during the relative movement between said support and the record carrier, and an indicator occu ying a fixed position with respect to the cylindrical surface of the cylinder.
19. In a honographic machine, the combination with the sound-box support and record carrier having relative movement between them, a member mounted to rotate about a fixed axis upon the sound-box "support and adapted to' support a correction strip cylindrically disposed about said axis, and means for impartin rotation to said member and correction str p during and proportionately to the relative movement between said support and the record carrier.
In testimon whereof Iafiixm si nature.
0 ARLES ivi. GQL s EIN.
. Certificate oncor recuon, i
It in hereb mifiad mm in 1mm; Patent No. 1,403,585, granted March 7, 1922, ripen like epplicetieli of Charles M. Goldatein, of New v York, N; Y. ,'for an improvement ill ":Phonog re.phic Meeh'uiesf errors appear in the printed specification requiring correction as followa': Page 1, line 70', fo1 the misspelled wo prferebly reed preferably; page 4, lines 4 and .5, claim 11, strike out/the words with relation to the eylindrieal mem r" end the same to follow the word "indies.- tions.in line 6; m1 mm the 53m Letters Pgbentpheulgi b. ma with these correetippa-the 'ein'thet the game may eenl'enii 50 m3 reeol'd oi the eke in the Patent oflice.
Sigh'ed ma sealed this 24th day of April, A. 1).; 1622-.
Kenn] m1. FEHNING, man, Oomms'uiorw of Poison.
US372745A 1920-04-10 1920-04-10 Phonographic machine Expired - Lifetime US1408585A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US372745A US1408585A (en) 1920-04-10 1920-04-10 Phonographic machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US372745A US1408585A (en) 1920-04-10 1920-04-10 Phonographic machine

Publications (1)

Publication Number Publication Date
US1408585A true US1408585A (en) 1922-03-07

Family

ID=23469456

Family Applications (1)

Application Number Title Priority Date Filing Date
US372745A Expired - Lifetime US1408585A (en) 1920-04-10 1920-04-10 Phonographic machine

Country Status (1)

Country Link
US (1) US1408585A (en)

Similar Documents

Publication Publication Date Title
ES404057A1 (en) Selective printing apparatus
US1837222A (en) Pressure recording gauge
US1408585A (en) Phonographic machine
GB1085653A (en) Improvements in or relating to surface testing apparatus
ES330785A1 (en) Procedure for manufacturing a tubular needle. (Machine-translation by Google Translate, not legally binding)
US2632548A (en) Justifying compositor
GB1249095A (en) Tape scale for position measuring transformer
US1503078A (en) Speed indicator and recorder
US2290585A (en) Table for multiple negative duplicator machines
US1613520A (en) Apparatus for recording the duration of very brief phenomena
FR1094189A (en) Small-tube writing instrument for Indian ink
US2072055A (en) Correction device for dictation machines
Lennon et al. The long and winding road
US1377749A (en) Annotator
US1619483A (en) Gear-testing machine
US1740468A (en) Correction device
FR2325021A1 (en) Testing device for photogrammetric instrument - has photograph holder and observation optical system with movable mark
US1266065A (en) Correction device for talking-machines.
US2407594A (en) Lettering instrument
US2633969A (en) Indicating device for typewriters and the like
US1272262A (en) Phonograph.
US1213356A (en) Recorder.
US1430800A (en) Recording device for torpedo-launching tubes
US1150563A (en) Sound-reproducing instrument.
US2601246A (en) Recording instrument