US228817A - hutchins - Google Patents

Description

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2 Sheets-Sheet 2.

W. J. HUTCHINS. Mechanical Telephonet No. 228,817. Patented June 15,1880.

N. PETERS, PNOTO-UTHOGRAPMR, WASNINGTON, D c.

i l i UNITED STATES PATENT OFFICEO WILLIAM J. HUTOHINS, OF J OLIET, ILLINOIS, ASSIGNOR TO HIWSELF AND THOMAS H. HUTOHINS, OF SAME PLAOE.

MECHANICAL TELEPHONE.

SPEGIFIGATION forming part of Letters Patent No. 228,81'7, dated June 15, 1880.

Application filed February 9, 1880.

To all whom it may concem:

Be it known that I, WILLIAM J. HUroHINs, of the city of J oliet, in YVill county, and State of Illinois, have invented certain Improvements in an Instrument for Oonveying the Sound of the Human Voice, commonly known as Telephones, the construction and operation of which I will explain, reference being had to the annexed drawings, and the letters io and figures thereon, making a part of this specification, in which- Figure lis a front external elevation Fig. 2, a` side view of a rubber insulator; Fig. 8, perspective view of the wire insulated Fig. 4, a

front elevation of the interior working` parts; Fig. 5, a vertical sectional View on the line 3, Fig. 4.

This invention relates to certain improvements in that class of instruments whereby the sound of the human Voice is conducted from one diaphragm or sounding-board to another by a wire stretched taut, and also in the construction and arrangement of the device to call and signal the person to be addressed.

2 5 In the drawings, B is a case containing the working parts of the instrument, having,` a circular Opening` in its face, inclosed by a flaring; month-piece, (shown at K, Fig. 5.) The case B is divided horizontally by a partition,c,Fig. 4,

a little below the center, the part above the partition i; being` the sounding-box, and the part below containing;` the uecessary machinery to ring,` the call-bell P, Fig. 1, which call-bell is located on the outside of the front part of 3 5 the case B below the month-piece K, as shown in Figs. l and 5, the knocker w reaching through the front of the case under the bell to strike it, as shown in Fig. 5.

The sounding-box above the partition o is also divided Vertically from side to side a little forward of the center, as is shown in Fig. 5, by a perforated partition, E, which perforated partition is of metal, and has a circular opening,` in its center, into which is secured a band or collar, k, projecting toward the front, as is shown in said Fig. 5. Across the front face or Opening made by said collark is stretched the diaphragm or sounding-board a, which diaphragm may be of metal or any other suitable material, and securely attached to the 5o `outer edge of the collar k, as shown in Figzl.

The soulul-colulucting` wire D has a button, cs, secured to its front end, to prevent its pulling through the diaphragm a, and, after passing through the center of the diaphragm a, passes at right angles with it out through an Opening,` at the back of the case, as shown in Fig. 5, to another diaphragm in a similar instrument at its other end.

VVhen the wire D is stretched taut from one diaphragm to the other, words spoken by the human voice at the month-piece K may be distinctly heard at the front of the diaphrag'm at its other end. The perforations in the partition E serve to allow the sound at the rear of the diaphragm a to rebound to the front and into the Opening,` at its front, so as to utilize all the sound possible.

VVhen conversing` with a person at the opposite end of the wire D the ear-trumpet F, which is connccted to the sounding-box at its side, as is shown in Figs. l and 4, may be held to the ear, while conversation may be carried 011 at the month-piece K, the hose A connecting' the ear-trumpet F with the trumpet T in the sounding-box, as shown in Fig. 4. By means of this hose A and ear-trumpet F the sound is much more audible than if the ear were held to the month-piece K. This hose A may be connected to the sounding-box at any place, but preferably at the side, in front of the diaphragm (o.

The device to call is located at the rear of the diaphragm a, and is composed of the shaft i, bent up at right angles at its iuner end, and teri'ninating` in the crotch or fork S, while the outer end has a crank, o. This shaft rotates in a `jourual in the side of the case B and in the journal 7. The iuner end of the shaft i is furnished at the foot of the crotch S with a go weight or hammer and a coil-spring, 6. Then it is desired to call, the lever or crank o is pulled forward and let go, when the spring` 6 causes the hammer 5 to fiy backward, so the forked end 8 of the shaft fi will stride the wire D and strike the enlargement Y on the wire D heavily, as is shown in the dotted lines in Fig. 5. The shock thus produced will cause the wire D to vibrate its entire length with such force as to throw forward the weight or tappet c in the instrument at the opposite end and touch off the alarm and ring the bell P.

The device for iouching off the alarm or call-hell P is as follows: n' is a post, having its lower end fastened to the partition i; about central in the case, and having a journal at its upper end, bearing the lower end of the upright lever c, in which journal the lever o partially rotates hackward and forward easily. The upright lever e stands in the journal on the upper end of the post a' in a nearly upright position, as shown in Figs. 4 and so that the weight c on its upper end will rest lightly against the end of the wire D at the front of the diaphragm a. Its lower end is bent in the form shown in Fig. 4, terminatin g in a presser-foot, m.

a' is a spring attached to the inner side of the case B, and supporting at its outer end the pallet r, and holding the rod x', which supports the knocker w of the alarm-hell.

VVhen a shock is given or imparted to the opposite end of the wire D it will throw the weight c and lever c forward so the presserfoot will press down on the pallet which lowers the rod m' and sets free the alarm R by lowering the knocker w. The alarm runs and rin gs the bell P until the alarm machinery runs down. The rod x' has a long hook on its lowelI end, inclosing` the knocker-lever, so the knockerlever will not become disengaged from it while in motion.

The alarm machinery R is of the ordinary pattern used in a clock, and is fastened in the lower part of the case at one side, as shown in Fig. 4.. The long shaft x and the crank n are for the purpose of winding it up.

The set-serew g, Fig. 5, is used to regulate the position of the post n' and lever c, to cause the weight o to rest in such a manner against the end of the wire D that the least shock will send it forward.

VVhen conversation. is being had the crank o is always to be pulled forward and held behind the stop r, so as to disengage the forked end 8 of the shaft i from the wire D, as is shown in Fig. 5, as any contact of a hard substance with the wire D will destroy its vibration; also, while conversing the weight c and lever c are thrown forward, as is shown by the dotted lines in Fig. 5, thus leaving the wire D entirely free to vibrate.

Then the instrument is left set for any future conversation the crank 0 should be pulled forward and placed behind the stop r, as stated, and the lever c and weight c placed in the position shown in Fig. 5, with the weight c against the end of the wire D and the crank a turned forward to wind up the alarm maehinery B. It is then ready to receive the alarm by a shock from the other end. As the alarm machinery in this case is the same as that used in a clock, and having no substantially different features, and as it alone and by itself forms 110 part of my invention, l. do not describe its details further.

As the wire D can touch no hard substauce between the diaphragms, I suspend the wire D in the mauner shown in Fig. 3.

b is a piece of rubber, having a central hole for the wire D to pass through, and a slit from the center hole to the periphery, as is shown in Fig. 2, which slit permits the insertion of the wire D. These rubber insulators are encircled by a wire clasp, (shown at S',) or by a cord, (shown at z, Fig. 3,) the upper ends of which are attached to a pole or building, as

the case maybe, by the screw-eyes S. By this arrangement the wire D does not come in contact with any hard substanee, and the joints made by hinging into the serew-eyes S preserves the Vibration of the wire.

The opening in the front of the case B, Fig. 1, marked Ru1es,is for the purpose of holding the printed rules for Operating the instruments.

I am aware that a wire has been used between two diaphragms to convey sounds, but not with such a perforated partition to support the diaphragms, or in connection with the call and alarm devices shown.

Without the weight c pressing against the end of the wire D the said wire will sing, in consequence of the wind coming Lin contact with it, quite similar to the cleoliand harp. To prevent this singing or sound of the wire D, the weight c serves a double purpose of calling and sileneing any such noise when the instrument is not in use. This singing may also be prevented by leaving the forked end S of the shaft t' iu contact with the enlargement Y on the wire D, as shown by the dotted lines in Fig. 5.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is as follows, to wit:

1. The diaphragm a, mounted on the collar 7; and supported by the perforated partition E of the case B, in combination with the wire D, for the purpose set forth.

2. The combination and arrangement of the shaft i, crank o, spring 6, weight 5, fork S, and enlargement Y on the wire D, for the purpose set forth.

3. The combination and arrangement of the weight c, lever c, foot m, post a', pallet l, spring a', rod w', alarm R, knocker w, hell P, and set-screw g, all attached to and contained within the case B, as and for the purpose set forth.

4. The case B, having the partitions E lv and containing the diaphragm (1,, mounted on the collar k, the levcr c, weight c, presser-foot m, spring ct', hooked rod x', alarm R, shaft x, shaft i, Spring G, journal 7, weight 5, fork 8, set-screw g, wire D, enlargement Y, and hav- IOC) IIO

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ing the external oranks, o and n, hell P, and month-piece K,l and hose A, all in combination with each other, and arranged to operate in the manner and for the purpose set forth.

5. The combination and arrangement of the post n', lever e, and set-sorew g, for the purpose set forth.

6. The Weight c and fork 8, in combination with the Wire D, for the pnrpose of preventing the singing sound of the wire D, as set io forth.

WILLIAM J. HUTGHINS.

Witnesses THoS. H. HUTOHINS, JoHN MCNIFF.

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