US1813589A - Member or structure vibrated by energy impulses - Google Patents

Description

July 7, 1931. F. A; STAPLER MEMBER OR STRUCTURE VIBRATJ QD BY ENERGY IMPULSES Original Filed-Oct. 10, 1928 Patented July 7, 1931 UNITED STATES.

Parent caries FLORICEL A. STAPLER, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO VICTOR TALKING MACHINE COMPANY, A CORPORATIGN OF NEW JERSEY MEMBER OR STRUCTURE VIBRATED BY ENERGY IMPULSES Application filed October 10, 1928, Serial No. 312,911.

My invention relates to a member or structure partaking of vibratory motion under the influence of energy impulses having a frequency, usually, varying between 16 and 20,000 cycles per second or those having a frequency of the order usually encountered in speech or music transmission.

My invention relates to a member or structure, as aforesaid, utilized to transmit or transfer energy impulses, as aforesaid, from one region to another or from a transmitting member to a receiving member.

My invention relates to a member or structure, as aforesaid, as an arm or bar to which vibratory motion is imparted by a transmitting member or system, as a phonograph record or a magnetic structure, the energy impulses actuating or controlling a suitable receiving member or system, as a diaphragm, armature, or the flux in a magnetic circuit.

In accordance with my invention, a memher or structure, as aforesaid comprises a single elementor part including a web section from which projects spaced wing hinges and a hinge connecting neck. 7

F urth-er in accordance with my invention, the aforesaid member or structure comprises a single element or part having spaced walls connected by a transverse wall, the aforesaid web section being disposed in the plane of said transverse wall and the aforesaid wing hinges and hinge connecting neck being disposed substantially at right angles to said Web section.

Further in accordance with my invention, a flange is formed on a chambered element or part, as aforesaid, transversely of the longi-. tudinal axis thereof, and said flange is received by a slot or channel provided in a member, one end of which is disposed within said element or part.

In accordance with one important phase of my invention, the aforesaid member or structure is an arm or bar carrying, at one end, a stylus or needle, the other end thereof being connected to a sound-producing diaphragm. The detailed description following hereafter refers to a construction of the character last described, although it shall be understood that my invention is not to be thus limited,

Renewed January 6, 1931.

My invention resides in the member or structure, article, method and features of construction of the character hereinafter described and claimed.

For an illustration of some of the forms my novel member or structure, or article may take and for an-understanding of my method, reference is tobe had to the accompanying drawings in which:

Figure 1 is a perspective view, partly broken away, of separate parts of a needle arm or stylus bar constructedin accordance with my invention.

Fig. 2 is a vertical sectional view, partly in elevation, of the structures shown in Fig. 1.

Fig. 3 is a vertical sectional View, partly in elevation, of the structures illustrated in Fig. 2 after they have been assembled.

Fig. 4 is a vertical sectional view, partly in elevation, of my novel needle arm or stylus bar and associated parts of a sound box.

Fig. 5 is a front elevational view of a part sheet material is brought, by a series of shaping operations, to the configuration of the member A, Fig. 1. As illustrated in Fig. 1, member A comprises a hollow, circumferentially complete body portion formed 'by side walls a, a, a topwall b and a bottom wall 0, the latter comprising flanges, soldered or otherwise suitably secured together, said fianges,-previous to the shaping operation,

constituting the outer edges of the blank or stamping. Forming an extension of one end of the wall 6 is a member cl while from the other end of said wall I) and extending beyond each side thereof is a web section 6 disposed in the plane of the said wallb.

Disposed at right angles or substantially so, in the example shown, to the web section a are the spaced wing or pivot hinges f, f.

V accordance with my invention, said ing hinges f, f are connected by a neck or flange g disposed in a plane common to said wing hinges f, f and positioned at right angles, or substantially so, to the web section 6.

The aforesaid member ii, at one end there of, as hereinafter more particularly described, is connected to a diaphragm, or equivalent, by the member (Z. The other end of member A is secured or attached to a talkin -machinestylus-retaining-member B, or equivalent, which, in the example illustrated, and as more particularly describedin the aforesaid Mallina application is generally rectangular in configuration and comprises solid body of metal formed, pref rab y, by a stamping operation. The upper si ace of member B illustrated in Figs. 1, 2 and 3 com arises a lug or extension h and, in accordance with my in vention, a crosswise slot which, among others has the function of locating the position at which member B is secured to member A. The bottom surface of member B comprises a shouldered portion the rear surface there of, preferably, being inclined as indicated at is. Disposed axially of the member in and extending a suitable distance thereinto is a passage or opening for the reception of a talking machine needle or stylus m, l, retained in ihe position illustrated ;y the shank of a clamping screw a; threaded into a passage opening into the aforesaid passage substantially at right angles with respect thereto and passing through the lug h.

In accordance with my invention and to the end that the aforesaid members A and B may be assembled, web section a, necl: g and hinge wings f, f are bent into the position illustrated by the broken lines in Fig. 2. Thereafter, the sloping and shouldered end of the member B is passed from right to left, 2-, into the open end of the chainbe formed by tl e walls a, a, Z), and 0 until the shouldered portion j engages with the adjacent end of the bottom wall 0. Tli reupon, the web section a, flange 9 and hinge wings f, f are restored to substantially their origition, to wit, the position illustrated by 2. In so doir the 1 ()1 central portion or the necl: or flange g is passed into the slot 2' of member B. Thus assembled, it is desirable that ill- 1i or contacting surfaces be soldered together.

A needle arm 'or stylus bar of Lhe character hereinbefore described is illustrated in Fig. as forming part of talking machine or phonograph sound box. Tl 's sound box may be of any suitable character and in Fig. a is shown as comprising a base section 1 terminating in a tubular conduit 16; adapted to be associated with the tone arm of a sound amplifying horn. A diaphragm 2 of any 'iable character. which, however, in the example illustrated, is of the type illustrated in my co-pending application, Serial No. 311,553, filed Oct. 10, 1928, is received at its a 0 di ne-nsicned paths for the propagated sound 'aves.

n the example illustrated, the needle arm or stylus bar is secured to the diaphragm 2 only at the midpoint thereof, the member (Z constituting a tie member between the needle arm proper and the diaphragm, said. meni- (Z, in the example shown, passing through a bushing disposed centrally of the diaphragm and being suitably secured thereto as by a 2 we of wax or solder, not shown.

The w E constitute the hinging or her ngs f, 7 'TOttll support for tlie needle arm or stylus r and they may be supported inany suitle manner. To this end, in the example down, the cap section 4; is provided with the eggs or members 7 projecting laterally thererem, each of the aforesaid wings f, 7 being *ved between one face of a lug 7 and a or member 8. In the example shown, .ch wing f is provided, during the stampmg operation, with a passage f1, through each of which and alined passages in a lug 'l' and member 8, extends a bolt 9 for clamping the wings and for pivotally'mounting the need e arm in the position illustrated in h 4 1 i i. In this manner, the needle arm may be mounted for hinging or pivotal movement and, due to the fact thatthe wings f, f are constructed of resilient material, said needle arm s self-restoring in the sense that, of its own volition, it tends to return to an original position after being moved from such position.

Energy impulses set up by the phonograph or talking machine record are transmitted to the sound producing diaphragm by the thereto-connected needle arm or stylus bar. It is highly desirable, therefore, that the latter be so constructed as to be freely vibratable in one plane, readily restorable to an original position, and resistant to vibration in planes other than said one plane. A needle arm constructed and mounted as hereinbefoi'e described and illustrated is readily movable or vibratable only in the forward and reverse directionin which it moves when moving the diaphragm 2 orthecentral portion thereof side-wise in either direction. In other words, if the partswere positioned asillustrated in Fig. l, the needle arm would be readily vibratable iii the plane of paper, the pivotal or hinging axis of said needle arm being disposed in those portions of the wings f, f beyond the lugs 7.

At the same time, due to the construction and arrangement of parts, the needle arm is not freely vibratable or movable in a direction longitudinally thereof, nor in that direction in which it would move under the influence of friction imposed by the record which, were the parts positioned as illustrated in Fig. i, would be substantially at right angles to the plane of the paper. The nonvibratory or non-movable features of the needle arm noted immediately above arise primarily due to the provision of the web section 6 which remains in the original plane of the wall Z). This web section 6 and neck 9 connect the wings f, f and constitute a structural angle section which efl ectively impedes and substantially prevents needle arm movement longitudinally thereof and in the direc: tion imposed by record friction, as aforesaid. Moreover, said web section 6 and the connecting neck 9, in efl'ect, form a truss or support which braces the wings f, f and the shaped body portion of the member A.

A needle arm or stylus bar constructed and mounted in accordance with my invention, besides possessing the desirable pivotal or hinging characteristic noted above, is of minimum weight, particularly the material from which the member A was formed, which may be elastic or resilient in character, as steel or bronze having a thickness of the order of 0.008 of an inch, more or less. Due to this feature, the moment of inertia about the needle arm pivotal or hinging axis is small and, as a result, the quality of sound production is improved.

It is highly desirable that the connecting tie member d be formed integrally with the needle arm proper and this may readily be accomplished by forming the part ZZ by the same die structure that forms the blank from which the member A is formed. Moreover, since the material forming the member A is very thin, it follows that the mass of the tie member (Z is kept small, this being'highly desirable.

The tie member cZ may lead direct to the diaphragm or, preferably and as illustrated, the connection may be circuitous and comprise a U-shaped bend 6Z1, or equivalent, by virtue of which the flexibility of the tie connection is improved. It should also be noted that there is a portion (Z2 of the tie member cZ beyond the hollow, circumferentially complete body portion of member A. This portion (Z2 of the tie member is substantially in alinement with wall Z2 and, during a period of sound production, flexing or giving action in the needle arm proper largely occurs in said portion (Z2.

Although the aforesaid members, structure, bars or arms have been illustrated and described as operated by a phonograph or talking machine record, it shall be under-' stood that my invention is not to be thus limited. Thus, for example, said members, structure, bars or arms may be magnetically actuated, the needle or stylus, in such case, being omitted.

Although the hereinbefore described members, structures, bars or arms have been specifically referred to for diaphragm-actuating purposes, it shall be distinctly understood that my invention is not to be limited to such an arrangement.

Thus, for example, said members, strucsection and connected thereto, and a neck portion connecting said wing hinges and angularly related to sa1d web section.

2. A vibratable member for transmitting energy impulses from one region to another, said member comprising a single shaped member of sheet material terminating at one end in a web section, spaced wing hinges angularly related to said web section and connected thereto, and a neck portion connecting said wing hinges and angularly related to said web section.

3. A vibratable member for transmitting energy impulses from one region to another,

sa1d member comprising a single shaped member of shect material having a hollow, circumferentially complete portion substantially rectangular in cross-section, one wall of said hollow portion terminating in a Web section, spaced wing hinges angularly related to said web section and connected thereto, and a neck portion connecting said wing hinges and angularly related to said Web section.

4. A vibratable member for transmitting energy impulses from one region to another, said member comprising a. single shaped member of sheet material having spaced walls connected by a transverse wall terminating in a web section, spaced wing hinges angularly related to said web section and connected thereto, and a neck portion connecting said wing hinges and angularly related to said web section.

5. A vibratable member for transmitting energy impulses from one region to another, said member comprising a single shaped member of sheet material having spaced walls connected by a transverse wall, said transverse wall terminating in a web section extending beyond each side thereof, spaced wing hinges disposed in a single plane substantially at right angles to said web section and formed integrally therewith, and a neck portion disposed in said plane and formed integrally with said web section and with said wing hinges.

6. A vibratable member comprising an eniongated diaphragm-connecting-element, and a talking-machine stylus-retaining-element, one of said elements having a flange transversely disposed with respect to its longitudinal axis, and formed integrally therewith, and the other of said elements having a slot for the reception of said flange.

7 A vibrata-ble member comprising an elongated diaphragm-connecting element, and a talking-machine-stylns-retaining-eleinent, said first named element being formed from a single piece of sheet material and having spaced walls connected by a transverse wall terminating in a flanged web section, the end of said second named element being received between said walls and comprising a slot for the reception of the flange of said web section.

8. A vibratable member comprising an elongated diaphragm-connecting element, and a talking-machine-stylus-retaining-element, said first named element being shaped from a single piece of sheet material and having spaced walls connected by a transverse wall terminating in a web section having spaced wing hinges and a connecting neck angularly related with respect thereto, the end of said second named element being received between said walls and comprising a slot for the reception of said connecting nets. 7

9. A stylus arm or bar comprising a hollow member, laterally extending wings secured thereto and a st lus holdin member secured to said member and wings.

In testimony whereof I have signed this specification this 27th day 01": September,

FLORICEL A. STAPLER.

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