US2677114A

US2677114A - Tube-loosener device

Info

Publication number: US2677114A
Application number: US194003A
Authority: US
Inventors: Berger Samuel
Original assignee: Individual
Current assignee: Individual
Priority date: 1950-11-03
Filing date: 1950-11-03
Publication date: 1954-04-27
Anticipated expiration: 1971-04-27

Description

April 27, 1954 s. BERGER TUBE-LOOSENER DEVICE Filed NOV. 3, 1950 E m we B E U M A s Patented Apr. 27, 1954 UNITED STATES FATENT OFFICE TUBE-LOOSENER DEVICE Samuel Berger, Little Silver, N. J.

Application November 3, 1950, Serial No. 194,003

(Granted under Title 35, U. S. Code (1952),

see. 266) 7 Claims.

The invention described herein may be manufactured and used by or for the Government for governmental purposes, without the payment of any royalty thereon.

This invention relates to improvements in tube-loosener devices, and mor particularly to means in the form of a cam-operated unit associated with a conventional tube and socket and operable to force an initial movement of the tube axially away from the socket whereby the terminal prongs of the tube are at least partially released from the grip of the socket.

Examples of tube looseners to which this invention relates are shown in British Patent No. 445,486, issued April 14, 1936, to Reginald J. Miller, and in my copending application filed August 1, 1950, and bearing Serial Number 177,113, now Patent No. 2,635,129, issued April 14, 1953.

One of the objects of this invention is the provision of a tube-loosener device which can be readily combined and work with any conventional socket and the corresponding conventional tube.

Other objects and advantages will hereinafter appear.

For the purpose of illustrating this invention, an embodiment thereof is shown in the drawing, wherein Fig. 1 is an isometric view of a tube-loosener device constructed and operated in accordance with the invention;

Figs. 2, 2a and 2b are enlarged, fragmentary views partly in section and illustrative of the principle and manner of operation of the improved tube-lcosener device, the section being taken on the line 22 in Fig. 3;

Fig. 3 is a plan view, partly broken away, of Fig. 2, but with the tube removed from the socket; and

Fig. 4 is a fragmentary view similar to Fig. 2 but on a reduced scale, and illustrative of a modification.

In the drawing, the reference numeral 50 designates a conventional tube socket, into which is plugged the tube l i.

The specific embodiment of the invention disclosed in Figs. 1 to 3 is shown as comprising a ring it seated on the chassis base it and emracing the base of a conventional tube H, the bulb or envelope of the latter overhanging and engaging the flange l2a integral with and disposed at the top of ring I2.

Hooked into the chassis base it or otherwise secured thereto is a frame member it for retaining an eccentric or cam roller 16 and holding the latter in proper position with respect to socket I0, before tube H is inserted into the latter. For this purpose, the retainer I5 is provided with circular, flexible fingers [5a which fit loosely about the roller or cylinder I 6 and yield to allow for freedom of movement of the latter during the tube-loosening action thereof.

Ring 12 is provided with arms I? and i8 rigid with respect thereto and embracing and pivotally connected to roller l6 by pins It or the equivalent, the later being disposed on an axis eccentric to the center of the roller, as shown. Integral, respectively, with ring 12 and roller 16 are

lugs

20 and 2| protruding therefrom. Fixed to or integral with roller I5, is a lever 22.

With a tube H inserted into socket It, and with the parts in their respective positions as shown in Figs. 1, 2, and 3, the tube is loosened or at least partly lifted out of the socket by pressing down on the fiat end 22a of lever 22. The occurring clockwise rotation of roller It brings a higher portion of the cam or eccentric surface thereof around into engagement with the adjacent fiat surface I 512 of member I5, and also places the eccentric pins [9 in the higher position shown in Fig. 2a. The tube 9 I is thereby tilted slightly to loosen and partly withdraw the adjacent prongs thereof from socket 10, as also shown in Fig. 2a. The lug 2| is now in position immediately at, or about to engage lug 20. When lug 2! engages lug 26, as shown in Fig. 2b, ring I2 and roller I 6 are in eifect a single rigid part provided with a handle 22 rigid with respect to or fixed to such part. Continued downward pressure at 22a causes further clockwise rotation of roller is to raise pins is still higher, whereupon ring I2 and the tube 1 seated on and engaged by flange 12a are lifted vertically and at least to such an extent that the tube is released from the grip of the socket, and can then be removed easily by hand.

In the embodiment of the invention shownin Fig. 4, the upper, peripheral edge of the tube socket i0 is recessed or shouldered, as shown, to receive or accommodate a ring l2 which corresponds to and serves the same purpose as the ring [2 in Figs. 1 to 3. The top surface of ring I2 is flush with the top surface of socket It! so that with the tube inserted into the socket, the base H of the tube engages the top surface of ring [2. In Fig. 4 the relative positions of the parts are the same as in Figs. 1, 2 and 3, and the operating or tube-loosening action is the same. That is, with a conventional tube inserted in socket It, it is loosened or at least partly lifted out of the socket by pressing down on the fiat end 22a of lever 22. The occurring clockwise rotation of roller is lifts ring 12 at an angle to the top surface of socket l0. Since the base H of the tube overhangs and is engaged by ring l2, the tube is likewise tilted, as in Fig. 2a, to loosen and partly Withdraw the adjacent prongs thereof from socket l9. Continued downward pressure at 22a to the advanced position as shown in Fig. 2b, lifts ring l2 arid the tube vertically to release the latter from the grip of the socket.

Retainer l5 serves the purpose of holding ring l2 in position over socket in before insertion of a tube into the latter. Also, the base of the retainer provides the smooth, fiat surface [5b for the cam or eccentric surface of roller 15 to engage as the latter rotates clockwise during the tube-loosening action.

While but one embodiment of this invention has been disclosed it will be understood by those skilled in the art that various-modifications such as in the size, shape and arrangement of the parts are possible without departing from the spirit of the invention or the scope of the claims.

What is claimed is:

1. In combination, a chassis base, a tube socket fixed to said base, a tube inserted in said socket, a ring seated on said base and disposed about the base of said tube and providing a seat for the latter, a cylinder, retaining means fixed with respect to said chassis base and in engagement with said cylinder for retaining said cylinder and allowing said cylinder to rotate therein, arms connecting said ring and said cylinder and supportin the latter in a position adjacent to said,

chassis base and for rotary movement about an axis eccentric to the cylinder axis and remote from and substantially perpendicular to the tube axis, the outside diameter of said cylinder being sufiicient to cause the latter to function as an r eccentric with respect to said chassis base upon an initial rotary movement of said cylinder in a given direction about said axis thereby to force said ring and said tube to a position tilted with respect to said socket, and a lug afiixed to said cylinder and operable incident to further rotary movement of the latter in said direction to engage said ring thereby to impart substantially axial movement to the latter and to said tube in the direction away from said socket.

2. In a tube-loosening device of the character described, a ring engageable with a tube to impart substantially axial movement thereto, a cylinder, retaining means supporting said cylinder and allowing resilient movement thereof about its axis, arms connecting said ring and said cylinder and supporting thelatter for rotary movement about an axis eccentric to the cylinder axis, and a lug aiiixed to said cylinder and operable incident to said rotary movement of the latter to engage said ring and to impart thereto movement for the purpose aforesaid.

3. A device for facilitating the removal of a tube having a base and envelope from a socket fixed in a chassis base, comprising a ring for enaging the base of said tube and having a pair of arms extending outwardly therefrom, a cylinder havin a pair of aligned pivot points displaced from the center and respectively located on the opposite base portions thereof, said arms being respectively pivoted on one of said pivot points, a flexible frame fixed with respect to said base and fitting about said cylinder for fixing said cylinder for rotational movement with respect to said chassis base, a lug protruding from said cylinder serving to engage said ring, and lever means connected to said cylinder for imparting rotational movement thereto, whereby said ring moves eccentrically with respect to said cylinder when said cylinder is rotated until said lug engages said ring and thereby imparts axial movement to said ring with respect to said socket.

4. A device according to claim 3, wherein said ring is seated on said chassis base and embraces the base portion and bears against the envelope portion of said tube.

5. A device according to claim 3, wherein said ring is recessed within said chassis base and bears against the base portion of said tube.

6. A device for facilitating the removal of a tube having a base and envelope from a socket fixed in a chassis base, comprising a cylinder having a fulcrum point on the base portion and displaced from the axis thereof, a flexible frame fixed with respect to said base and fitting about said cylinder for fixing said cylinder for rotational movement with respect to said chassis base, a first lever arm pivotally connected to said cylinder on said fulcrum and engaging the base portion of said tube, a second lever arm connected to said cylinder for imparting rotational movement thereto, and a lug protruding from said cylinder and adapted to engage said first lever arm after a predetermined amount of rotation of said cylinder, whereby said first lever arm moves eccentricalh with respect to said cylinder. until said lug engages said first lever arm and thereby imparts axial movement to said first lever arm with respect to said socket, when said cylinder is rotated by said second lever arm.

7. A tube lifting device for a tube mounted in a socket comprising, a hollow retainer, a rotatable member mounted within said retainer, a tube lifting member eccentrically pivoted on said rotatable member, said hollow retainer secured relative to said socket, pivot limiting means associated with said rotatable member and said tube lifting member to cause both said rotatable member and said tube lifting member to pivot together to move said tube lifting member against said tube.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 2,476,735 Johnson July 19, 1949 2,541,294 Ronci Feb. 13, 1951 FOREIGN PATENTS Number Country Date 445,486 Great Britain Apr. 14, 1936