US3863934A

US3863934A - Dismountable column applicable to automatic record players

Info

Publication number: US3863934A
Application number: US437625A
Authority: US
Inventors: Raul Antonio Vega
Original assignee: Individual
Current assignee: Individual
Priority date: 1973-02-09
Filing date: 1974-01-29
Publication date: 1975-02-04
Anticipated expiration: 1992-02-04
Also published as: IT1002780B; AR193481A1; AU6406573A; ES413304A1; BR7304022D0; FR2217768A1; NL7306993A; JPS49113605A; DE2402727A1; FR2217768B3

Abstract

A dismountable column within a hollow shaft attachable to the base of a record player wherein the column has on the portion entering the shaft a pyramid-shaped protuberance. The tubular shaft has a vertical groove therein within which is guided the protuberance and a ring-shaped groove positioned above the protuberance when the column is fully inserted within the tubular shaft. The ring-shaped groove carries an open elastic ring having an interior tongue which rides within the vertical groove and has a length not exceeding the thickness of the wall of the tubular shaft.

Description

United States Patent Vega Feb. 4, 1975 DISMOUNTABLE COLUMN APPLICABLE TO AUTOMATIC RECORD PLAYERS [76] Inventor: Raul Antonio Vega, Vieytes 1386,

Martinez-Pcia., Buenos Aires, Argentina [22] Filed: Jan. 29, 1974 [21] Appl. No.: 437,625

[30] Foreign Application Priority Data Feb. 9, 1973 Argentina 246523 [52] US Cl. 274/10 S [51] Int. Cl ..Gllb 17/04,Gl1b 17/16 [58] Field of Search 274/10 S [56] References Cited UNITED STATES PATENTS 3,588,120 6/1971 Bayha 274/10 S Primary ExaminerSamuel B. Rothberg Assistant Examiner-Steven L. Stephan Attorney, Agent, or Firm-Stevens, Davis, Miller & Mosher [57] ABSTRACT A dismountable column within a hollow shaft attachable to the base of a record player wherein the column has on the portion entering the shaft a pyramid-shaped protuberance. The tubular shaft has a vertical groove therein within which is guided the protuberance and a ring-shaped groove positioned above the protuberance when the column is fully inserted within the tubular shaft. The ring-shaped groove carries an open elastic ring having an interior tongue which rides within the vertical groove and has a length not exceeding the thickness of the wall of the tubular shaft.

1 Claim, 3 Drawing Figures PATENTEU H975 3.863834 SHEET 101' 2 PATENTED 3,863,934

SHEET 2 0F 2 DISMOUNTABLE COLUMN APPLICABLE TO AUTOMATIC RECORD PLAYERS This invention relates to a dismountable column for automatic record players.

Columns carried by automatic record players are located in the center of the turn table and support a pile of records which obey a central mechanism installed in the column acting in combination with an automatic device located under the tray and fall one after another at the time the pick-up moves radially outwardly. Precisely, because the column has a capacity for six or eight records in its upper part the column must be of a relatively long length.

However, such a column can not be fixed, because it is too long to be contained in a box, because it is undesirable if the owner wants to selectively choose the records, because the records are wasted or because the records are of great value. Consequently, for these reasons, when it is not desired to have the records handled by the automatic device, the column is taken off and substituted by another one of lesser length.

Such a substitution must be effected inthe most practical way possible, inasmuch as certain persons, especially women and children are generally not inclined to perform any complicated handling.

Consequently, it is necessary that the taking off and the mounting procedures be consistent with the requirements of the delicate mechanism concerned, that is offer a firm and precise resistance and keep in view the weight which the column might accumulate in its upper extremity.

On the other hand, it is necessary that when the column is mounted in its respective place, that it be in its correct position, so that its mechanism combines with the part of the automatic arrangement, located in the base, otherwise it either does not work, or some of its component parts are damaged.

The purpose of the present invention is to furnish a central dismountable column and mounting, in an automatic record player, without complicated mechanism, which would offer security and the required efficiency. This purpose is reached in an absolutely efficient way, by means of a simple procedure consisting of an axial effort of separating the said column and pushing it in order to mount the same. This takes place because of the existence ofa protuberance in the column, coinciding with a groove made in the flange ofa central hollow shaft, around which turns the plate of the record player.

For the purpose of the better understanding the invention, a set of explanatory drawings is hereby attached. The drawings show the preferential way of execution, which, however, in no case, should be considered as a limitative one regarding the real achievement of the invention and in which:

FIG. 1 is a perspective exposed view ofthe main elements composing the present invention;

FIG. 2 is an enlarged perspective view of the parts composing the coupling; and

FIG. 3 is a longitudinal view in partial diametric section at the coupling when assembled.

In FIG. 1 are shown column 1 the constitution and the mechanism of which is of general knowledge, hollow central shaft 2 and retention ring 3.

Referring to both FIG. 1 and FIG. 2, column 1 has a pyramid-shaped protuberance 4, while hollow shaft 2 has a ring-shaped groove 5 and a vertical groove 6, exceeding in length the height of groove 5. Groove 6 is deep enough to communicate with the hollow portion of the shaft and to give access to pyramid-shaped protuberance 4, without any free space or adjustment.

Ring 3 has an internal small tongue 7, which is in front of a cut 8 interrupting its continuity. Ring 3 has a certain elasticity, permitting it to expand diametrically.

FIG. 3 shows a longitudinal view of all of the composing parts in their places after the column has been assembled. In this position, the lower portion of column I can be seen within the cylindrical hollow of shaft 2 with the pyramid-shaped protuberance 4 centered into vertical groove 6, and resting on stop 6' to determine the limit in depth of column 1. Elastic ring 3 is positioned in ring-shaped groove 5 yielding the necessary stop to the column.

Tongue 7 penetrates up to the interior perimeter of the cylindrical hollowness of shaft 2 thereby positioning the pyramid-shaped protuberance 4.

Ring 3, located in the ring-shaped groove 5, is in contact therewith in such a way that tongue 7 enters vertical groove 6. Column 1 is assembled with shaft 2 by introducing column 1 into the cylindrical hollowness of shaft 2 in such a way that pyramid-shaped protuberance 4 enters into vertical groove 6, which while being displaced axially will contact small tongue 7. Due to the elastic nature of ring 3 a slight push on column 1 forces protuberance 4 past tongue 7 and against bottom 6' of vertical groove 6.

With the sealing of protuberance 4 a certain impediment of taking off of records already used, will not creep to the column.

What is claimed is:

l. A dismountable column within a hollow shaft attachable to the base of a record player, said column having on a portion entering said shaft and on said portion a pyramid-shaped protuberance, said hollow shaft having a vertical groove within which is guided said protuberance and a ring-shaped groove positioned above said protuberance when the column is inserted fully within the shaft, and an elastic ring having an opening, the thickness of said ring being coincident with the width of the ring-shaped groove and having an interior coincident with the bottom of the ring-shaped groove when riding within said groove, said ring having a small interior tongue positioned opposite the opening to fit within the vertical groove and having a length not exceeding the thickness of the wall of the tubular shaft but of a length sufficient to engage said protuberance as said column is mounted or dismounted.

Claims

1. A dismountable column within a hollow shaft attachable to the base of a record player, said column having on a portion entering said shaft and on said portion a pyramid-shaped protuberance, said hollow shaft having a vertical groove within which is guided said protuberance and a ring-shaped groove positioned above said protuberance when the column is inserted fully within the shaft, and an elastic ring having an opening, the thickness of said ring being coincident with the width of the ring-shaped groove and having an interior coincident with the bottom of the ring-shaped groove when riding within said groove, said ring having a small interior tongue positioned opposite the opening to fit within the vertical groove and having a length not exceeding the thickness of the wall of the tubular shaft but of a length sufficient to engage said protuberance as said column is mounted or dismounted.