US1779231A - Electric phonograph reproducer - Google Patents

Description

Oct. 2l, 1930. c. F, GouDY ELECTRIC PHONOGRAPH REPRODUCER Filed June 14, 1929 Patented Oct. 21, 1930 UNITED .STATES PATENT OFFICE CARL F. GOUDY, OF FLUSHING,'NEW YOBX, ASSIGNOR TO PACENT yIEJIJEC'LRIC COMPANY, ING., F NEW YORK, N. Y., A CORPORATION 0F NEW YORK ELECTRIC PHONOGRAEB BEPBODUCER Application nled June 14,

This invention relates to electric phonographs and particularly tothe mounting and arrangement of thev reproducer or so`called pickup unit. y

The objects of the invention are to provide a balanced mounting for the pickup, which will enable the latter to properly follow the record groove, which will support the unit in a convenient position for changing of needles or the like, and clear of the,

record, so as to avoid any possibility of scratching the record; and to accomplis the fore oing in a neat attractive structure suited to high class phonograph instruments.

The desired objects are attained by certain novel features of construction, combinations and relations of partsv as hereinafter described and particularly claimed.

The drawing accompan ing and forming part of the specification il ustrates one practical commercial embodiment of the invention, it being understood that the structure may be modified as regards this particular disclosure without departure from-the true spirit and broad scope of the invention.

Fig. 1 is a broken side elevation of the complete unit illustrating in broken lines the pivotal mounting b which the pickup unit can be thrown back or replacing needles and showing how at this time the arm is independently sup orted to revent the unit or the arm from dropping own on the record; Fig. 2 is a broken lan view of the device; Fig. 3 is a detached) perspective view of the ivotal mounting bracket; Fig. 4 is an enarged .cross-sectional view of the same ason lineal-r4, Figfr; Fig. 5 is a cross-sectional view as on substa utially the plane of line 5-5 of Fig. 1.

The casing or shell of the pickup unit is indicated at 7, lthe'same being shown as of generally rectangular shape, housing the pickup mechanism which carries a needle or stylus 8 for engagement with the phonograph record. This stylus is removably clamped by a screw 9 having an operating head exposed at the front of the casing.

Secured on the back of the casin 7 is a special bracket shown las having a at base portion 10 riveted or otherwise suitably se- 19'29. Serial No. 370,784.

cured to the case at 11 and as having a rear-v wardly projecting substantially rectangular neck ortion 12 with screw seats 13 in opposite sldes ofthe same to receive pivot screws 14. These screws are indicated as extending in through lpivot openings 15 in the side flanges 16 of the channel bar 17, the top of Vthis channel bar being cut out lat the end at 18 to enable the bracketto swing to the upper position shown in the broken lines, Fig. 1. The side flanges of the'channel bar are shown cut on a downward forward incline at 19 to act as stopsY engaging the back of the bracket at 2() to hold the unit at the desired incline relative to the record surface.

The pickup unit is yieldingly retained in its operative position in the present disclosure by spring detents in the form of the balls 21 retained in protruding relation by anges 22 in the ends of a transverse passage 3 in the neck of the` bracket, the spring 24 forcling these balls apart so that they will snap into interlocking relation with seats or o enings 25, Fig. 1, in the side iianges. T ese spring detents thus normally retain the pickup unit inthe operative relation shown in Fig. 1, but they yield readily to permit the unit to be thrown back into the upraised position, for substitution of needles or the like. In the latter position, the neck of the bracket restsagainst the edge 26 of the cutout top portion of -the channel bar, which lattertherefore acts as a 'stop to limit the upward swinging movement and to support the unit in the thrown-back relation.

lThe unit supporting arm is pivoted for both lateral and vertical swinging movements. in the present disclosure, by means of a vertical pivot tube 27 journalled in a post or pedesta 28 and carrying at its up r end a head or yoke in the form of a pate 29 having upwardly angled lugs or flanges 30 disposed within the flanges 16'of the channel bar horizontal pivot screws 31 being extended through openings in said side flanges into screw seats provided in said lugs to hinge the supporting arm on a horizontal, axis.

To revent the free end of the supporting arm m dropping down when-,the .pickup unit is-raised, t e side lugs `800i the pivot 10 head are indicated as ext/ended upward and turned inward at, 32 to form rests located forwardly of the horizontal pivots 31, Fig. l and adapted to engage the underside of the channel bar, when that bar tilts downward below the normally operative position. These rests therefore provide a simple means for supporting the unit in the raised relation and enable the unit to be left in this condition without danger of scratching the records.

To counter-balance the weight of the unit to an extent, the rearward end of the support-ing arm, to thel right of the horizontal pivots in Figs. l and 2 is weighted by a block 33 shown as having its center of mass below the axis of the horizontal pivots and as having an angular neck portion 34 fitting in between the side flanges of the channel bar and secured thereby rivets or other suitable astenings 35.

The base or supporting pedestal is indicated as of hollow construction to receive the wires 36, which are lead up through the vertical pivot sleeve 27 and inside the channel of the supporting arm and the recess 3'? in the underside of the bracket, to the pickup unit.

'lhe inverted channel larly rigid and strong supporting arm, and at t e same time it is relatively inexpensive, since stock channel material may be used. The several parts, that is the pickup at one end, the counterweight, at the opposite end and the pivot mounting intermediate the ends may all be connected with the side flanges oi the channel, leaving the intermediate portion clear for passage of the electric connections. The unit and the counterweight are fitted 'to the opposite ends of the channel arm, so as to present on the whole a harmonious attractive appearance.

What is claimed is:

1f In apparatus of the character disclosed, an inverted channel arm having the top porn tion of the same cut out at one end, a phonograph pickup unit having a neck portion dieposed between the side anges of the channel arm at the said cutout end, pivot means extending through the side flanges and through said neck portion of' the unit, a counterweight secured between the side flanges 'of the channel at the opposite end of the same and pivot means engaged with the side flanges of the channel between the ends 'of the same.. i

2. In apparatus of the character disclosed, a phono raph pickup unit, a vertically pivoting an horizontally swinging supporting arm for said unit, said unit having a horizontal pivotal mounting on the arm enablin the unit to be swung upwardly into an inoperatlve position and a rest positioned to support the vertically pivoting arm when the un1t is swung up into said inoperative relation.

provides a particu- 3. In apparatus of the character disclosed, a vertically pivoted 4support having upstanding lugs and an inverted channel arm having its side flanges embracing said upstanding lugs, pivot :means engaged with said lugs and anges, one of said lugs extending up within the inverted channel to form a rest for supporting the same and a pickup unit mounted on one end ot said channel arm.

1l. In apparatus of the character disclosed, a pivoted supporting arm of channel crosssection, a phonographpickup unit having a neck portion swivelled to the side 'langes of said channel supporting arm and a weight member having a neck portion positioned between and secured to said side ilanges.

5. In apparatus of the character disclosed, a pivoted supporting arm of channel crosssection, a phonograph pickup unit having a neck portion swivelled to the side danges ot said channel supporting arm, said neck portion of the unit operating between the side flanges and spring detent means between said side flanges and neck portion.

6. ln apparatus ot the character disclosed, a pivoted supporting arm of channel crosssection, a phonograph pickup unit having a neck portion swivelled to the side tlanres of said channel supporting arm, said neck portion ot the unit being disposed between the side llanges and the body portion of the channel arin being' cut back from the ends of the side flanges to provide clearance tor said neclr. portion and to provide a stop enn gageable by the swivelled neck portion 'ci the pickup unit to limit the swivelling movement oi and to support the unit in upturned relation..

7. ln a device'oi the character disclosed, a

pedestal, a head journalled on said pedestal i and having upstanding lugs, an inverted channel arm engaged over said lugs, pivot means extending through the lugs and the side danges of the channel arm, a counter-balance weight secured between the side anges at one end oi the channel arm, a casing for a pickup unit and a bracket lined on the back ot said casing and having an extending neck portion pivotally engaged between the side anges at the opposite end of the channel arm.

8. In a device of the character disclosed, a pedestal, a head journalled on said pedestal and having upstanding lugs, an inverted channel arm engaged over said lugs, pivot means extending through the lugs and the side langes ont the channel arm, a counterbalance weight secured between the side lianges at one end ot the channel arm, a

g casing for a pickup unit and a bracket fixed on the back of said casing and having an extending neck portion pivotally engaged between the side ianges at the opposite end of the channel arm, the top of the channel arm at said end being removed between the eide anges to receive the neck of the bracket unit, with the projecting end portions of the and form e stop for engagement by neck portion.

9. in a device of the character disclosed, en inverted channel arm, a'pivot head iocat ed within 'the hollow of 'said channel arm, said arm having its vside lianges pivoted horiaontally to saidv head and said head having a rest extending up beneath the top ci the channel erin 'to form a Support 'for the erm viiniiting down swinging movement of the arm end a pickup unit carried by the end' of Said channel arm.

i0. ln apparatus ofi the character disclcsed, alphonograph pickup unit, ay swinging supporting arm `lorthe same, said erm being of inverted channel construction with dependent eide anges joined by n top wall9 said top well at one end of 'the erin being ont back from the ends of the eide danger, and said pickup unit having a neck portion ewivelied to the erm and operating in the cntaway portion of the erin between the sidefiangen v il., lin apparatus of the 'character disoiceed, a phonograph pickup unit, a swinging supporting arm for the saine, said erin iceingoii inverted .channei construction with dependent side iiangec joined .by a top weil, said top wall at one end of the arm being ont beck ronl the ends ci? the eidedangee, Said pickup ynnit having -a .neck portion ewivelled to the arm and operating in the entawa' portion of the arm between the side iinnges land mounting means for the opposite end portion ci the arm, said mounting means i being engaged with said dependent side Hongos oit' the arm.

i2. .in a device of the'cheracter disclosed, 'tbe combination of a pickup unit harmingr a neck portion and a length of channel' bar having eide anges and a portion of the'ba connecting said side danges being cntnwa at one end ci' the bar to receive the neen' portion of 'the unit, means for secnringenid neck portion of the unit in position between the eide dongen, means engaged with the side @anges at a point removed from the unit lfior pivotally supporting the. channel bar, said channel bar being positioned by said enpporting means iny inverted relation with l the. channel of the same facing downward and wiring for the unit disposed in. said rlovmwardlyV faced channel, ,the neck of the nnit between the side ilanges' having a por tion in line with the channel to accommo date said wiring;

13. As a new article of manufacture, a supporting arm for a pickup unit, comprising a length of channel bar having side anges connected by a web portion and said web portion being cut back from the ends of the sideanges at one end of the bar to accommodate 'the neck portion of the pickup said side portions adapted to provide pivotal mounting elements.

In testimony whereof I ax my signature.

CARL F. GoUnY. o

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