US1025427A - Acoustic optical telegraph. - Google Patents

Description

A. SANANDRBS. ACOUSTIC OPTICAL TELEGRAPH.

APPLICATION FILED MAY 1, 1911.

Pantea May "a, 1912.

Inventor:

./lzioma Sar/madres iior/zey UNITED STATES' PAriiiisi'rv OFFICE.

AN'roNIo sANANDREs, oF NEW YORK, N. Y.

l ACOUSTIC OPTICAL QDELEGRAPH.

To all 'whom i may concern:

Be it known that I, ANToNio SANANDiuis, a subject of the King of Italy, residing in New York, county and State of' New York, have invented certain new and useful Improvements in Acoustic Optical Telegraphs,

v the message transmitted in the usual doty and dash characters is delivered in one o'r I more visual representations wherein the dots 8 'fixed to the rear wall 9ct the case.'

and dashes are distinguishable from each other respectively not only by the varying duration of such visual representation loutl also by the varying character thereof.

To these ends my improvements comprise means described and claimed in this speciication and illustrated in the accompanying drawings.

Figure 1 is a plan view with the case partly in section, of an instrument einbodying the preferred form'of my improvements and Fig. 2 is a similar sectional elevation of the same. Figs. 3 and 4 are diagrammatic plan views illustrating` the operation of my improved device.

The illustrated instrument comprises the usual coil magnet 3, 3 and armature 4 for engagement therewith.4 Said armature is fixed to cross arm 7 pivoted at 5, 5 in uprights 6, 6, respectively and has its rearwardly reaching arm 12'bearing uponstop A Spring 1() tending to' hold armature 4 out of contact with magnet 3, 3 is connected by r one end to arm 7 and by the other end to base 11 on which said magnet is fixed. Upstanding from cross arm. 7 is bracket 21 having xed thereto reflector 22- visible through opening 23 in front 24 of. said case. I employ reflector 22 in preference to a nonreiiecting indicator-so that a ray of light may be cast thereon from some convenient source. lnot shown, and thus increase the brilliance of the optical indication. Table top 25 of said case is provided wit-h a slot or perforation 13 thyerethroug Directly below said table top 2.5l an `i dicator or pointer 14 is mounted foi'l movement relative to said slot 18. Said indicator s ,Specification of Letters Patent.

Application led May 1, 1911.

Patented May 7, 1912.

Serial No.V 624,298.

preferably of triangular shape 'and one ofits angles or points as 15, is located directly below slot 13 or just rearwardly thereof, so that a slight forward movement, away from the magnet as' illustrated, will bring said point 15 into View, and a' greater movement thereof will bring awider portion of its face into view, the point corresponding with the dot of' the Morse telegraphic characters and the wider portion with a dash thereof. Said indicator 14 is mounted for movement in approximately the plane of table top 25,

by some suitable, means as thin springs, 16,`

16 fixed at their upper ends to the underside of said `indicator land at their lower ends to base 17 ,of said case. Y Depending from armature cross arm 7 is rod 18 the `lower end of which is guided for vertical movement in foot 19 fixed to base 17. Below table top 25 andv fixed to rod 18 is wedge 20 forl engagement with yieldable spring arin 26 fixed to indicator 14. p 4

The operation of my improved instrument is as follows t-- Magnet 3, 3 having been energized by an electric current from a sending instrument in the usual well known manner, armature 4 fixed to the free end of cross arm 7 is drawn down into contact with said magnet thereby making the usual contact sound and reiiector 22 moves down- 'wardly and slightly forwardly behind opening 23 and which movement is clearly visible through said opening. The duration of contact of said armature and magnet and the duration of said refiectors remaining in its downward position `indicate audibly and visually respectively, whether a'dot or dash is'traiismitted. At the same time, rod 18 .and wedge 20 are moved downwardly and said wedge engages arm 26 of indicator 14 thereby moving said indicator forwardly under and into viewthrough slot 13, one or both edges of which slot serve as a gage against which to read the movement of said indicator. If said wedge 20 remains inl its downward position only an instant, F ig. 3, theinert-ia of indicator 14 will be only pai'- tially overcome and spring arm 26 will yield toward said indicator. The forward movement of said indicator will therefore be slight and a dot will be indicated. On the other hand if said wedge 20 remains in its downward position a longer time the inertia of indicator 14; will be more fully overcome by the recoil of spring arm26 and said indi- Gator will be moved forwardly a greater diS- tance, Fig. 4, thereby exposing a broader portion through slot '13, indicating a dash.

.The circuit then'being broken the parts return to their idle positions as shown in Fi s. 1 and 2. If spring arm 26 is relatively rigid, lright hand spring' 16, Fig. 2, will tend to collapse under the initial downward movementiof wedge 20, thus indicating a dot. It

` wedge is held down for a longer period downward position.

I claim 1. A telegraph instrument including in combination, a magnet, an armature mounted for movement toward and from said magnet, a gage, an indicator having a face increasing in width as it recedes from said gage and means for moving said indicator from said armature to expose a narrow portion thereof for a dot impulse and a wid'er portion for a dash impulse.

2. A telegraph, instrument including in combination, a magnet, an armature mountcd for movement toward and from said magnet, a table having a slot therein, an indicator below said table and mounted for movement into and out of view through said slot and means for moving said indicator from said armature, distano varying with the duration of contactof said armature and magnet.

3. A telegraph instrument including in combination, a magnet, an armature pivotally mounted for movement toward' and from said magnet, a reflector fixed to said armature, a gage, an indicator mounted for movement relative to said gageand means Jr rfor moving said indicator from' said armaief distances varying-with the duration of contact of-said armature and magnet.

, 4.`A rtelegraph instrument including in combination, a magnet, an armature pivotally mounted for movement toward and from said magnet, a reflector fixed to said armature, a table having a slot therein, a

tapered indicator below said table and4 l mounted for movement into and out of view through said slot and means for moving said indicator from said armature to Vexpose a narrow portionv thereof for a dotimpulse and a wider portion for a dash impulse.

5. A telegraph instrument including in combination, a magnet, an armature mounted for movement toward and from said magnet, a gage, an indicator mounted for contact of said armature and magnet.

6. A telegraph instrumentincluding in combination, a magnet, an armature mounted for movement toward and from said magnet, a gage, an indicator mounted for movement relative to said gage, a yieldable arm fixed to said Vindicator and means for moving said indicator through said arm from said armature.

7. A telegraph instrument including' in combination, a magnet, an armature mounted tor movement toward and from said magnet, a table having a slot therein, an indicator below said table and mounted for movement into and out of view through said slot, a yieldable arm fixed to said indicator and means for moving said arm from said armature to transmit movement tosaid indicator varied in distance by the duration of contact of said armature and magnet.

Signed at New York, N. Y. this 29th day of April 1911 before two subscribing witnesses. t ANTONIO SANANDRES Witnessese-TIL n CHA's. W. LA RUE, LoUis B. TISCHLER.

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