US2294575A - Pickup arm for phonographs - Google Patents

Pickup arm for phonographs Download PDF

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Publication number
US2294575A
US2294575A US405820A US40582041A US2294575A US 2294575 A US2294575 A US 2294575A US 405820 A US405820 A US 405820A US 40582041 A US40582041 A US 40582041A US 2294575 A US2294575 A US 2294575A
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United States
Prior art keywords
arm
pick
bracket
studs
notches
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Expired - Lifetime
Application number
US405820A
Inventor
Emmor V Schneider
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Philips Home Products Inc
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Alliance Manufacturing Co Inc
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Filing date
Publication date
Priority claimed from US356313A external-priority patent/US2270972A/en
Application filed by Alliance Manufacturing Co Inc filed Critical Alliance Manufacturing Co Inc
Priority to US405820A priority Critical patent/US2294575A/en
Application granted granted Critical
Publication of US2294575A publication Critical patent/US2294575A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B3/00—Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor
    • G11B3/02—Arrangements of heads
    • G11B3/08—Raising, lowering, traversing otherwise than for transducing, arresting, or holding-up heads against record carriers
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
    • E05C17/00—Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith
    • E05C17/02—Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith by mechanical means
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B3/00—Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor
    • G11B3/02—Arrangements of heads
    • G11B3/10—Arranging, supporting, or driving of heads or of transducers relatively to record carriers
    • G11B3/12—Supporting in balanced, counterbalanced or loaded operative position during transducing, e.g. loading in direction of traverse
    • G11B3/20—Supporting in balanced, counterbalanced or loaded operative position during transducing, e.g. loading in direction of traverse by elastic means, e.g. spring

Definitions

  • the invention relates to electric phonographs and more particularly to certain improvements in the pick up arm in which is mounted the reproducer which carries the needle for recording or playing back a record, and the present application is a division of my co-pending application Serial No. 356,313, filed September 11, 1940, now Patent No. 2,270,972, granted January 2'7, 1942.
  • the object of the present improvement is to provide a simple, inexpensive pick up arm adapted for use in phonographs of the general character mentioned.
  • Another object is to provide a novel tension means for holding the pick up arm in either operative or inoperative position as desired.
  • a further object of the invention is to provide such a tension means which will function equally well upon a pick up arm designed for recording or reproducing, or a combination recording and reproducing arm.
  • a still further object is the provision of means whereby the pick up arm may be quickly and easily attached or detached when it is necessary to make repairs or replacements in the phonograph.
  • Still another object is the provision of means including a rotatable post for supporting the pick up arm, a channel shaped bracket upon the post and having notches in its outer end, a channel shaped pick up arm fitting over said bracket and interior studs pivoted in said notches and a pull spring connected to the outer end of the pick up arm and the inner end of the bracket for holding the pick up arm assembled upon the bracket.
  • a still further object of the invention is to provide a pick up arm as above referred to in which the tension spring is so located that it will normally hold the pick up arm in either position to which it is moved.
  • Another object is to provide a pick up arm of this character with an adjustable stop for limiting the downward movement of the pick up arm.
  • Fig. 2 a bottom plan View of the attaching bracket and the outer end portion of the pick up arm mounted thereon;
  • FIG. 3 a fragmentary view similar to Fig. 1, showing the pick up arm in the raised orinoperative position;
  • Fig. 4 a detached, perspective View of the supporting bracket for the improved pick up arm.
  • a portion of the platform of a phonograph cabinet is indicated at It] and the usual turntable (not shown) may be rotatably supported upon said platform in any usual and well-known manner.
  • a bearing II is fixed upon the platform and has journaled therein the hollow shaft [2 through which may be located the electric cord 13 leading to the reproducer (not shown) mounted within the pick up arm indicated generally at M.
  • the pick up arm may be of any usual and wellknown design being preferably formed of sheet metal in the form of a stamping having the depending side flanges l5, front end I6 and rear end 11, and may house any suitable design of reproducer designed for either recording or playing back or combination of both.
  • a channel shaped bracket indicated generally at I8 is fixed upon the upper end of the post l2.
  • This bracket is provided with the upright flanges 19 at opposite sides, each flange having a notch 20 in its rear edge.
  • is stamped up from the longitudinally central portion of the bracket H3 at a point near the forward end thereof.
  • Headed studs 22 are mounted in the side walls l5 of the pick up arm and are arranged to be received in the notches 20 at the rear edges of the vertical flanges 19 of the channel bracket 18.
  • a pull spring 23 has one hooked end 24 located through the slot 25 and aperture 26 in the upper rear corner of the pick up arm, the other hooked end 21 thereof being located through the aperture 28 in the ear 2
  • the spring 23 is thus located at such an angle that with the pick up arm in the lowered or operative position as shown in Fig. 1, the spring 23 tends to urge the arm downward while when the arm is swung to the raised or inoperative posiable position so that the lower end of the adjusting screw 29 contacts the top of the bracket" I8 when the pick up arm is in lowered position v as shown in Fig. 1.
  • a coil expansion spring3l may be located within the bore ,320)? the boss- 30 interposed between the bottom wall thereof and the head 33 of the screw.
  • a needle as indicated generally at 34,- of any usual and suitable design, for" either recording or reproducing, as the case may be, may be carried by the reproducer (not shown) within the forward end of the hollow pick up arm and held in position in usual and well-known manner as by the set screw 35 received in the vertical slot 36 in the forward end wall I6 of the pick up arm.
  • the pick up arm In the position shown in Fig. 1,' the pick up arm is in position for either recording or reproducing a record, the needle 34 being'in position to engage the record upontheturntable (not,
  • a phonograph a horizontal platform, a Vertical post journaled in said platform, a bracket upon the top of the post and having notches open through its outer end, a hollow pick up arm having studs upon its interior detachably pivoted in said notches and a pull spring connected to the outer end of the pick up arm and to the inner end of the bracket for holding the pick up arm assembled upon the bracket and for holding the pick up arm in either angular raised or substantially horizontal lowered position.
  • a horizontal platform journaled in said platform a bracket upon the top of the post and having notches open through its outer end, a hollow pick up arm having studs upon its interior detachably pivoted in said notches and a pull spring connected to the outer end of the pick up arm and to the inner end of the bracket for holding the pick up arm assembled upon the bracket and for holding the pick up arm in either angular raised or substantially horizontal lowered position, and an adjustable stop carried by the pick up arm for contact with the bracket for limiting the downward movement of the pick up arm.
  • a pull spring having one end connected to the outer end of the pick up arm above said studs and its other end connected to the inner end of the bracket below said studs so that the spring throws over center of the studs when the pick up arm is pivoted upon the studs, and holds the pick up arm in either angular raised or substantially horizontal lowered position.
  • a horizontal platform a channel shape bracket journaled upon said platform and having upright flanges at its side edges provided with notches open through their outer ,ends, a hollow pick up arm receiving said bracket andhaving studs upon its interior detachably pivoted in said notches, and a pull spring having one end connected to the outer end of the pick up arm above said studs and its other end connected to the inner end of the bracket below said studs so that the spring throw over center of the studs when the pick up arm is pivoted upon the studs, and holds the pick up arm in either angular raised or substantially horizontal lowered position.
  • a horizontal platform a channel shape bracket journaled upon said platform and having upright flanges at its side edges provided with notches open through their outer ends, a hollow pick up arm receiving said bracket and having studs upon its interior detachably pivoted in said notches, and a pull spring having one end connected to the outer end of the pick up arm above said studs and its other end connected to the inner end of the bracket below said studs so that the spring throws over center of the studs when the pick up arm is pivoted upon the studs, and holds the pick up arm in either angular raised or substantially horizontal lowered position, and an adjustable stop carried by the pick up arm for contact with the bracket for limiting the downward movement of the pick up arm.

Description

Sept 1942- E. V. SCHNEIDER PICKUP ARM FOR PHONOGRAPHS ori inal Filed Sept. 11, 1940 Patented Sept. 1, 1942 PICKUP ARM FOR PHONOGRAPHS Emmor V. Schneider, Alliance, Ohio, assignor to Alliance Manufacturing Company, Alliance, Ohio, a corporation of Ohio Original application September 11, 1940, Serial tent No. 2,270,972, dated No. 356,313, now Pa January 27, 1942.
ivided and this application August '7, 1941, Serial No. 405,820
6 Claims.
The invention relates to electric phonographs and more particularly to certain improvements in the pick up arm in which is mounted the reproducer which carries the needle for recording or playing back a record, and the present application is a division of my co-pending application Serial No. 356,313, filed September 11, 1940, now Patent No. 2,270,972, granted January 2'7, 1942.
In recent years an increasing number of people have become interested in making their own records and playing the same as well as playing the usual commercial records, and this has resulted in a considerable demand for a moderate priced combination recording and play-back phonograph.
The object of the present improvement is to provide a simple, inexpensive pick up arm adapted for use in phonographs of the general character mentioned.
Another object is to provide a novel tension means for holding the pick up arm in either operative or inoperative position as desired.
A further object of the invention is to provide such a tension means which will function equally well upon a pick up arm designed for recording or reproducing, or a combination recording and reproducing arm.
A still further object is the provision of means whereby the pick up arm may be quickly and easily attached or detached when it is necessary to make repairs or replacements in the phonograph.
Still another object is the provision of means including a rotatable post for supporting the pick up arm, a channel shaped bracket upon the post and having notches in its outer end, a channel shaped pick up arm fitting over said bracket and interior studs pivoted in said notches and a pull spring connected to the outer end of the pick up arm and the inner end of the bracket for holding the pick up arm assembled upon the bracket.
A still further object of the invention is to provide a pick up arm as above referred to in which the tension spring is so located that it will normally hold the pick up arm in either position to which it is moved.
Another object is to provide a pick up arm of this character with an adjustable stop for limiting the downward movement of the pick up arm.
The above objects together with others which will be apparent from the drawing and following description, or which may be later referred to may be attained by constructing the improved pick up arm in accompanying the manner illustrated in the drawing in which Figure 1 is a side elevation of a pick up arm constructed in accordance with the invention, parts being broken away for the purpose of illustration;
Fig. 2, a bottom plan View of the attaching bracket and the outer end portion of the pick up arm mounted thereon;
Fig. 3, a fragmentary view similar to Fig. 1, showing the pick up arm in the raised orinoperative position; and
Fig. 4, a detached, perspective View of the supporting bracket for the improved pick up arm.
Similar numerals refer to similar parts throughout the several views.
A portion of the platform of a phonograph cabinet is indicated at It] and the usual turntable (not shown) may be rotatably supported upon said platform in any usual and well-known manner.
A bearing II is fixed upon the platform and has journaled therein the hollow shaft [2 through which may be located the electric cord 13 leading to the reproducer (not shown) mounted within the pick up arm indicated generally at M.
The pick up arm may be of any usual and wellknown design being preferably formed of sheet metal in the form of a stamping having the depending side flanges l5, front end I6 and rear end 11, and may house any suitable design of reproducer designed for either recording or playing back or combination of both.
For the purpose of mounting the pick up arm on the oscillating post l2 a channel shaped bracket indicated generally at I8 is fixed upon the upper end of the post l2.
This bracket is provided with the upright flanges 19 at opposite sides, each flange having a notch 20 in its rear edge.
An ear or lug 2| is stamped up from the longitudinally central portion of the bracket H3 at a point near the forward end thereof.
Headed studs 22 are mounted in the side walls l5 of the pick up arm and are arranged to be received in the notches 20 at the rear edges of the vertical flanges 19 of the channel bracket 18.
A pull spring 23 has one hooked end 24 located through the slot 25 and aperture 26 in the upper rear corner of the pick up arm, the other hooked end 21 thereof being located through the aperture 28 in the ear 2| of the bracket I8.
The spring 23 is thus located at such an angle that with the pick up arm in the lowered or operative position as shown in Fig. 1, the spring 23 tends to urge the arm downward while when the arm is swung to the raised or inoperative posiable position so that the lower end of the adjusting screw 29 contacts the top of the bracket" I8 when the pick up arm is in lowered position v as shown in Fig. 1.
For the purpose of holding the stop screw 29 v in adjusted position, a coil expansion spring3l may be located within the bore ,320)? the boss- 30 interposed between the bottom wall thereof and the head 33 of the screw.
A needle as indicated generally at 34,- of any usual and suitable design, for" either recording or reproducing, as the case may be, may be carried by the reproducer (not shown) within the forward end of the hollow pick up arm and held in position in usual and well-known manner as by the set screw 35 received in the vertical slot 36 in the forward end wall I6 of the pick up arm.
In the position shown in Fig. 1,' the pick up arm is in position for either recording or reproducing a record, the needle 34 being'in position to engage the record upontheturntable (not,
shown).
When it is desired to raise the pick up arm from the record, it is swung upwardly uponthe pivot points 22 to the position shown' in Fig. 3,
the spring 23 throwing over center as above described and holding the pick up arm in raised position until it is again manually lowered to the operative position.
I claim:
1. In a phonograph, a horizontal platform, a Vertical post journaled in said platform, a bracket upon the top of the post and having notches open through its outer end, a hollow pick up arm having studs upon its interior detachably pivoted in said notches and a pull spring connected to the outer end of the pick up arm and to the inner end of the bracket for holding the pick up arm assembled upon the bracket and for holding the pick up arm in either angular raised or substantially horizontal lowered position.
2. In a phonograph, a horizontal platform, a vertical post journaled in said platform a bracket upon the top of the post and having notches open through its outer end, a hollow pick up arm having studs upon its interior detachably pivoted in said notches and a pull spring connected to the outer end of the pick up arm and to the inner end of the bracket for holding the pick up arm assembled upon the bracket and for holding the pick up arm in either angular raised or substantially horizontal lowered position, and an adjustable stop carried by the pick up arm for contact with the bracket for limiting the downward movement of the pick up arm.
3. In a phonograph, a horizontal platform, 3.
vertical post journaled on said platform, a bracket upon the top of the post and having notches open through its outer end, a hollow pick up arm receiving said bracket and having studs upon its interior detachably pivoted in said notches,
and a pull spring having one end connected to the outer end of the pick up arm above said studs and its other end connected to the inner end of the bracket below said studs so that the spring throws over center of the studs when the pick up arm is pivoted upon the studs, and holds the pick up arm in either angular raised or substantially horizontal lowered position.
4'. In a phonograph, a horizontal platform, a
vertical post J'ournaled on said platform, a bracket upon the top of the post and having notches ope n through its out-er end, a hollow pick up arm receiving said bracket and having studs upon its ,tact with the bracket for limiting the downward movement of the pick up arm.
5. Ina phonograph, a horizontal platform, a channel shape bracket journaled upon said platform and having upright flanges at its side edges provided with notches open through their outer ,ends, a hollow pick up arm receiving said bracket andhaving studs upon its interior detachably pivoted in said notches, and a pull spring having one end connected to the outer end of the pick up arm above said studs and its other end connected to the inner end of the bracket below said studs so that the spring throw over center of the studs when the pick up arm is pivoted upon the studs, and holds the pick up arm in either angular raised or substantially horizontal lowered position.
6. In a phonograph, a horizontal platform, a channel shape bracket journaled upon said platform and having upright flanges at its side edges provided with notches open through their outer ends, a hollow pick up arm receiving said bracket and having studs upon its interior detachably pivoted in said notches, and a pull spring having one end connected to the outer end of the pick up arm above said studs and its other end connected to the inner end of the bracket below said studs so that the spring throws over center of the studs when the pick up arm is pivoted upon the studs, and holds the pick up arm in either angular raised or substantially horizontal lowered position, and an adjustable stop carried by the pick up arm for contact with the bracket for limiting the downward movement of the pick up arm.
EMMOR V. SCHNEIDER.
US405820A 1940-09-11 1941-08-07 Pickup arm for phonographs Expired - Lifetime US2294575A (en)

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US356313A US2270972A (en) 1940-09-11 1940-09-11 Recording and reproducing phonograph
US405820A US2294575A (en) 1940-09-11 1941-08-07 Pickup arm for phonographs

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2545652A (en) * 1945-07-11 1951-03-20 Edison Inc Thomas A Phonograph recorder and reproducer
US2557176A (en) * 1948-08-04 1951-06-19 Philco Corp Phonograph tone arm
US2588616A (en) * 1948-10-29 1952-03-11 Reuben C Carlson Adjustable phonograph pickup arm
US2597113A (en) * 1946-05-08 1952-05-20 Philco Corp Phonograph apparatus
US2908354A (en) * 1956-03-09 1959-10-13 George James Troy Automatic greasing unit
US3024489A (en) * 1957-12-10 1962-03-13 Renault Window balancing device
US4827850A (en) * 1988-09-30 1989-05-09 Howe Furniture Corporation Table with folding modesty panel
US5272789A (en) * 1992-06-09 1993-12-28 Quest Engineering, Ltd. Self-closing door hinge
US5957062A (en) * 1996-03-15 1999-09-28 Falcon Products, Inc. Folding table
USD422813S (en) * 1999-06-07 2000-04-18 Falcon Products, Inc. Movable table leg

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2545652A (en) * 1945-07-11 1951-03-20 Edison Inc Thomas A Phonograph recorder and reproducer
US2597113A (en) * 1946-05-08 1952-05-20 Philco Corp Phonograph apparatus
US2557176A (en) * 1948-08-04 1951-06-19 Philco Corp Phonograph tone arm
US2588616A (en) * 1948-10-29 1952-03-11 Reuben C Carlson Adjustable phonograph pickup arm
US2908354A (en) * 1956-03-09 1959-10-13 George James Troy Automatic greasing unit
US3024489A (en) * 1957-12-10 1962-03-13 Renault Window balancing device
US4827850A (en) * 1988-09-30 1989-05-09 Howe Furniture Corporation Table with folding modesty panel
US5272789A (en) * 1992-06-09 1993-12-28 Quest Engineering, Ltd. Self-closing door hinge
US5957062A (en) * 1996-03-15 1999-09-28 Falcon Products, Inc. Folding table
US6003447A (en) * 1996-03-15 1999-12-21 Falcon Products, Inc. Folding table
USD422813S (en) * 1999-06-07 2000-04-18 Falcon Products, Inc. Movable table leg

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