US471745A - Telephone - Google Patents

Description

(No Model.) a sheets-sheet f1.

' J. H. HOWARD.

TELEPHONE.

110.471,74'5.. Patented Mar. 2-9, 1892.

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' SSheets-Sheet 2.

J. H. HOWARD.

`" TELEPHONE. Patented Mar. 29, 1892.

' i (No Model.)

(No Model.) s sheets-sheet s.

J. H. HOWARD.

TELEPHONE.

No. 471,745. Patented Mar. 29., 1892.

UNITED STATES YPATENT OFFICE.

JAMES H. HOWARD, OF MEDFORD, MASSl/ XCHUS'FISV TELEPHONE.

SPECIFICATION forming part of Letters Patent No. 471,745, dated March 29, 1892..

Application filed September 2l, 1891. Serial No. 406,355. (No model.)

T0 all whom t may concern,.-

Be it known that l, JAMESA H. HOWARD, of Medford, -in the county of Middlesex and State of Massachusetts, have invented certain new and useful Improvements in Telephones, of which the following is a specification.

This invention relates to telephones; and it has for its objectto provide such improvements as will enable thev magneto-box of a telephone to be made of a much smaller size than heretofore-a matter which is of consid.- erable importance in the packing and shipping of telephones for export, as well as in domestic transmission.

A The invention also has for its object to provide an improved construction and arrangementv of parts which will do away with the necessity of making connections through the hinges of the front of the box, thus simplifying the construction and rendering more sure the operation of the apparatus contained in the box.

The invention also has for its object to pro vide an improved switch operated by the weight of the receiver hungin a hook or crotch affixed to or forming a part of said switch, which shall be of simple construction, eicient in use, and not liable to get out of order.

The invention consists in the improvements which I will now proceed to describe and claim.

Of the accompanying drawings, forming a part of this specification, Figure l represents a front elevation of a telephone -box .constructed and arranged in accordance with my improvements, the front of the box being removed in order to show the interior arrangements thereof. Fig. 2 represents a section on line 2 2 of Fig. 1, looking toward the right. Fig. 3 represents a sectional View of a portion of the box, taken on the line 3 3 of Fig. 2. Fig. 4 represents a section on line 4 4 of Fig.

'1, looking toward the left, showing an elevation of my improved door-pull switch.

The same let-ters of reference indicate the same parts in all the igures.

In the drawings, a d d2 d3 represent, respectively, the top, bottom, and the two sides of the box, and d4 represents the back of the same. A

b b represent the usual horseshoe-magnets attached to the box in the usual or any suitable way and provided with the usual shaft Z', operated by a crank or handle b2 outside of the box, which operates the usual armature between the lower ends of the horseshoemagnets b b. n E

A part of my improvements consists in placing the ringer-coils and ringer inside of the upper portion ot' the horseshoe-magnets b b above the shaft b', as is best illustrated in Figs. 2 and 3.

c c represent the two coils which actuate the ringer-armature c. These coils I support inside the upper portion of the horseshoemagnets b by brackets d d, and the ringer c is supported between the ends of the coils c c, vas usual, by a suitable bracket d', on which it is pivoted, as shown in Fig. 2.

In the drawings I haveshown the bells or gongs e e on the outside of the top of the box; but it will be obvious that they might as well be on the outside of the back or front of the box, the ringer c being arranged accordingly. I prefer the arrangement shown, however.

I do not limit myself to the form and arrangement of the brackets d d d here shown, as the same maybe of any form which may be found suitable, and may be aflixed to any part ofthe box which may be found convenient.

By placing the bell-ringing coils c in the space inside the horseshoe-magnets b, I obtain two advantageous results: First, I economize space, as the space occupied by the magnets c above the horseshoe-'magnets in the forms of telephones now commonly in use is not required in myimproved form, and the top of the box may be close to the upper end of the horseshoe-magnets, as shown in the drawings, and, secondly, I avoid the necessity of hinging the front of the box and of making connection with the bell-ringing magnets c through said hinges, asin the forms now in common use, where the bell-ringing magnets are placed on the door or front of the box. The front of the box in my improved telephone may be screwed, hinged, or attached in any suitable way to the rest of the box, or it may be a sliding front, grooves being provided for it in the side pieces. This simplied construction, it will be readily seen, is less expensive than the form now in use, and there.is less danger of poor connection be- IOO ' tained in the box.

tween the various parts of the apparatus -con- Another simplified construction is found in my improved switch for cutting out of the circuit the receiver when the latter is hung upon its hook. This consists in a shaft or rodjadapted to slide in bearings g g on the box. Around the rod f is coiled a spring f', one end of which bears against a pin or stop f2 affixed to the rod, the other end bearing on the bottom of the box or on the bearing g thereon. The springf tends to press the rod fupwardly or into the box,A and said spring is made of such strength that the weight of the receiver, when hung on a suitable hook or crotch f3. affixed to or forming part of the rod f outside of the box, will overcome said spring and will force the rod f downwardly oi' outwardly from the box. I have shown the hook or crotch f3 at the lower end of the rod f below the box, and I prefer this construction; but it is obvious that the hook might project from any part of the rod f through a slot in the side of the box and be equally operative.

At a suitable point, preferably above the bearing g, the rod fis provided with a contact pin or piece f4, which is adapted, when the receiver is4 on the crotch f3, to make contact with acontact spring or piece h, and when the said receiver is removed from the crotch s and the rod f moved upward by the spring f to make contact with the contact piece or spring i, the top end of the rod f at the same time making connection with another contact piece or spring j. The contact-pieces 71., i', and j and the rod f are connected in the usual way to the other operative parts of the telephone in a manner well known and understood by those skilled in the art and not necessary to describe here, so that when the receiver is on the hook and the pin]L14 in contact with the contact-piece 7L the circuit will be closed from one line-wire through the ringer-coils and over the other line-wire, cutting out the other parts, and that when the receiver is removed from the crotch and the pin f4 and rod f come, respectively, into contact with the contact-pieces andj and break contact with the piece h the receiver and microphone will be included in the circuit and the horseshoe-magnets and bell-ringing magnets cut out. Y

' It will be seen that, my improved door-pull switch, operated by the weight of the receiver, is extremely simple in construction and certain in operation.

I claiml. A telephone having the bell-ringing or rin ger-actuating coils or magnets arranged inside of the curve of the horseshoe-magnets, as set forth. y

2. In a telephone, the combination of the horseshoe-magnets, the ringer-actuating magnets or coils arranged inside of the curve of said horseshoe-magnets, and the ringer extending out from between said horseshoemagnets, as set forth.

3. In a switch operated bythe weight of a telephone-receiver, the combination, with a vertically-movable spring-supported rod provided with a crotch at its lower end for the reception of the said receiver and having a beveled upper end and alateral projection f4 at apoint below said upper end, of the spring contact-pieces j and i, arranged to make a sliding contact wit-h'the said beveled upper end of the rod fand the said projection f4, respectively, when said rod is in a raised position, and the contact spring-piece h, arranged to make a sliding con tact with the said projection when the said rod is in its lowered position, and electrical connections with the said spring contact-pieces and the verticallymovable rod, as set forth.

4. In a telephone, thecombination, with the horseshoe-magnets', and the ringer-actuating magnets located inside of the curve of said horseshoe-magnets, of the door-pull switch operated by the weight of the receiver to cut out said receiver when the same is hung upon it and to cut out said magnets when the recei ver is removed from it, as set forth.

In testimony whereof I have signed my name to this specification, in the presence of two subscribing witnesses, this 81st day ot' August, A. D. 1891.

JAMES II. HOVARD.

Witnesses:

ARTHUR W.' ORossLEY, A. D. HARRISON.

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