US1202843A

US1202843A - Device for use in the manufacture of gramophone, phonograph, and the like sound-boxes.

Info

Publication number: US1202843A
Application number: US4428015A
Authority: US
Inventors: Joseph Hoffay
Original assignee: Individual
Current assignee: Individual
Priority date: 1915-08-07
Filing date: 1915-08-07
Publication date: 1916-10-31
Anticipated expiration: 1933-10-31

Description

J. HOFFAY. GRAMOPHONE,

DEVICE FOR USE IN THE MANUFACTURE OF PHONOGR'APH, AND THE LIKE SOUND BOXES.

APPLICATION FILED AUG-7, I9I5.

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J. HOFFAY.

DEVICE FOR USE IN THE MANUFACTURE OF GRAMOPHONE, PHONOGRAPH, AND THE LIKE SOUND BOXES.

' APPLICATION men AUG. 7. 1915.

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JOSEPH HOFFAY, OF NEW YORK, N. Y,

DEVICE FOR USE IN THE MANUFACTURE OF GEAI/IOPHONE, PHONOGEAIEH, AND THE LIKE SOUND-BOXES.

raoaeas.

Specification of Letters Patent.

Patented (lot. 31, 1916..

Application filed August '7, 1915. Serial No. 44,280.

To all whom it may concern:

Be it known that I, J OSE HOFFAY, a citizen of the Republic of Mexico, and a resident of the city of New York, borough of Manhattan, in the county and State of New York, have invented a new and Improved Device for Use in the Manufacture of Gramophone, Phonograph, and the like Sound-Boxes, of which the following is a full, clear, and exact description.

In my copending application filed on the 1th day of April, 1915, Serial No. 10,698, are described certain improvements in sound boxes or the like for gramophones, pho11ographs and the like machines having the stylus lever made of a forked formation and keeping under continuous tens on or compression means, preferably passlng through the diaphragm, connecting the bifurcations to the diaphragm and to each other.

The present invention relates to means for temporarily subjecting and holding the bifurcations of such a forked stylus lever under predetermined stress, while the permanent connecting means are being applied to the bifurcations, without liability of unduly straining or damaging the stylus lever.

To this end, the invention consists 1n. a clamping device, preferably made of tool steel, provided with a fixed or adjustable gage for controlling the clamping action,

and wi'h a second fixed or adjustable gage for holding the stylus tudinal displacement,

means for supporting lever against longiand 1f deslred, with leave both hands of the assembler free.

Embodiments of the invention are illus trated, by way of example, in the accompanying drawings, in which Figures 1 and 2 are elevations at right angles to one another; Fig. 3 is a plan, of one form of device; Figs. 4; and 5 are an elevation and a sectional plan of a modified form of device; and Fig. 6 is a sectional view of a sound box having a forked stylus lever and with which my present invention is employed.

Like or equivalent parts in the drawings are indicated by similar reference numerals.-

The device comprises two opposite clamping members or jaws, 6, 7.

In Figs. 1 to 3, the clamping member 7 has guide ways 28 which freely pass over screw threaded studs 8 fast on the member 6. The

the sound box in position in relation to the stylus lever so as to clamping action is effected by winged nuts 9 on the studs 8. 10, 10, are screw threaded studs serving as gages for limiting the clamping action or approach of the members 6, 7. These gages are adjustable in the member 6 and may be locked in position by nuts 11 when desired.

In Figs. 1 and 5 the clamping members are pivoted at 12, and have rearward extensions 18, 1 1. The clamping action is effected by a winged nut 9 on a screw threaded stud 8, fast on the extension 14, and passing freely through a slot 28 in the extension 13. 10 is a milled nut, adjustable on the stud 8, and serving as a gage for limiting the clamping action, and 11 is a winged nut for locking the gage 10 in position, when desired.

If desired, the member 6 or extension 14 may be adapted with a vise 17-18 for holding the device in position on a work bench or table.

The parts of'the members which engage the bifurcations of the stylus lever e are preferably grooved as at 25, and are preferably arranged so as to exert pressure on the bifurcations near to their free ends 26, when subjecting them to stress, thereby utilizing their resiliency along as much of their length as possible and minimizing possibility of damage particularly at their junction part.

A gage 19, preferably grooved as at 22 to engage the junction part of the bifurcations, is slidably mounted in a guide 20 in the member 6, and adapted to be held fast by a lock nut 21 in the position desired, which is preferably such as to cause the free ends 26 of the bifurcations to besituated in line with the central'axis of the diaphragm y, and the connecting means at, when the gage 19 is engaging the stylus lever as shown, and the fixed or detachable boss to of the sound box casing 0 is abutting against the front face of one of the clamping members, for example, the member 6, as shown. The gage 19 may also serve as a support for the stylus lever while it is being assembled, be fore the pressure is exerted.

23, 23 are adjustable screw threaded studs engaging one of the clamping members or extensions thereon, to serve, if desired, as a support for the sound box casing, and 24, 24 are nuts which may serve to lock the supports 23 when desired.

The operation of the shown constructions through an aperture in the -b The predetermined of the device is as followsz'The bifurcated stylus lever is inserted in the device as shown with the junction part engaging the previously set gage 19 and the bifurcations engaging the grooves of the clamping members 6, 7. The sound box casing is then inserted as shown betweenthe bifurcations until the free ends 26 thereof are in line with the central axis of the diaphragm and with the connecting means which are prefably already applied thereto ready to be secured to the bifurcations. It will be understood that one of the bifurcations passes boss of the sound OX- casingif already provided therewith.

pressure is then applied to the bifurcations by screwing down the nut or nuts 9, as much as the previously set 7 gage or gages 10 will permit. The ends of j to the connecting means mare then secured to the ends26 of the bifurcations, and the pressure of ,the'clamping members is' then 're-. leased by unscrewing the nut or nuts 9. If

' not been previously made fast to the'diaphragm, they are then so secured, and the connection therebetween is made air tight.

The devlce enables inexpert and inexpensivelabor to be employed, while insuring accuracy and quicknessin the production of I the sound boxesand the same standard of efliciency in all thereof, even When assem- "bling on a large'commercial scale;

'I claim:

1. A device for temporarily subjecting the bifurcations of forked stylus levers of gramophone, phonograph boxes to predetermined stresswhile permaagainst means for supporting the sound box in polongitudinal and the like sound nent connecting means are being applied,

comprising fork distorting members, a gage for controlling the distorting action, and means for holding the stylus lever against longitudinal displacement.

2. A device for temporarily subjecting the bifurcations of forked stylus levers of gramophone, phonograph and the like sound boxes to predetermined stress while permanent connecting means are being applied, comprising opposite clamping members, a gage for controlling the clamping action, and a second gage for holding the stylus lever against longitudinal displacement.

3. A device for temporarily subjecting the bifurcations of forked stylus levers of gramophone, phonograph and the like sound boxes to predetermined stress while permanent connecting means are being applied, comprising opposite clamping members, a gage for controlling the clamping action, a second gage for holding the stylus lever longitudinal displacement, and

sition.

4. A device for temporarily subjecting the bifurcations of forked stylus levers of gramophone, phonograph and the like sound boxes to predetermined stress, comprising fork distorting members, a gage for controlling the distorting action, and a second gage for holding the stylus lever against displacement.

JOSEPH HOFFAY.

(iopi es ofthis patent maybe obtained for five cents each, by. addressing the Commissioner of Patents, Washington, D. C.