US2233146A

US2233146A - Ejector lamp socket

Info

Publication number: US2233146A
Application number: US312900A
Authority: US
Inventors: Schwartz Morris; Castedello William
Original assignee: Individual
Current assignee: Individual
Priority date: 1940-01-08
Filing date: 1940-01-08
Publication date: 1941-02-25
Anticipated expiration: 1958-02-25

Description

Fb. 25, 1941. 1-z ETAL 2,233,146

EJECTOR LAME SOCKET Filed Jan. 8. 1940 UNIT'ED sures 2,233,146 -nmcron LAMP socxm:

Morris Schwartz, New York, andWilliain A Castedello, Huntington, N. Y. 7

Application January 8, 1940, Serial No. 312,900

5Claims.

Our invention relates to a lamp socket arrangement, particularly of the type in which the lamp may be readily eiected when desired.

An object of the invention is the production of a lamp socket which is particularly applicable for flash light lamps used in photography.

A further object of the invention is the utilizatien of a lamp socket in which a lamp may be readily insertedand locked within said socket and said insertion compressing a spring. Afl:er said lamp shall have served its purpose said lamp can be ejected from said socket by simply compressing a pair of ears or projections on said socket with the flngers, said mcvement causing the unlocking of said lamp in said socket, said unlocking causing sald lamp to be ejected under the ford pressure of the compressed spring aforesaid.

Flash lainps are commonly emploed in the photographie art. The bulbs of said lamps after being flred or flashed are subject to a high temperature for a certain period after the fiashing thereof, and while said bulb is subject to said high temperature, the same cannot be handled without burning' the flngers.

It is often desirable to photograph a number of separate objectives in rapid succession. The replacement of the flashlight bulbs in ordinary type lamp sockets cannot be readilymade until the lamp bulb is cool enough to be handled and delay in picture taking is a result therefrom.

By means of our invention the rapid replacement of lamps in the manner as outlined is possible.

In further description of our invention attention is called to the drawing, in which Fig. 1 shows the lamp socket and bulb in perspective.

Fig. 2 is a cross-section of the socket and bulb arrangement.

Fig. 3 is a detail of the shell housing of the lamp socket on a line 33 of Fig. 2.

Fig. 4 is a longitudinal section of the shell housing.

Fig. 5 shows a detail of the slot through which means the lamp bulb is locked through the meis the shell proper of said socket assembly. 24. 24 are the insertion slots on the shell 23a, the end of each of saidslots iras an L-shaped or key locking portion 2la which serves as a locking medium for the

pins

22, 22 that are mounted oppositely square shaped apertures 21h. Said apertures are formed by being* punched or indented on three sides of said apertures, the fourth side 21c being bent inward. The bent in portion 210 of each one of the apertures 21b serves to act as a limiting stop for the

pins

22, 22 on the base neck 2l of the tion preparatory to the ejection thereof upon the application of the spring releasing means which when applied partially rotates the lamp 2l], said movement causing the

pins

22 and 22 of said lamp to move clear of the extension key slot 24a. The a.foresaid movement will be further dscribed hereinater.

. 216 is 9. section of the collar 21 which issecured to the shell 23a by means of rivets 21f or other securing means.

The collar 21 is provided with a pair of ears or

projections

28, 28, said ears having a coiled spring 28a between them. The function of the spring 28a is to preserve a degree of spacing between the

ears

28, 28 and to cause the section 211c of collar 21 to retract. j

The section 217c et the collar 21 has a. limiting rotating' xriovement around the shell 23 upon pressing the

cars

28, 28 together with the flngers.

lamp and holding said lamp 20 in cocked posi- Said section 21k is held in normal position by means of the spring 28a. The bent in portions 21e et the apertures 21b form the limiting stops for the

respective pins

22 and 22 of the lamp 20 when said lamp is turned clockwise to the limit of movement provided by'the bent in portion 210 of the aperture 21b.

Secured to the lower section of the socket assembly 23 is a flanged collar 29, saidcollar in turn is secured to a screw plug 30, the function of the latter being well-known as a connectirig meansby screwing into a standard lamp socket.

On the inside of the screw plug.30 is a contact pin 31 which is connected to the lower base secthrough the

insulating washers

26 and 26 said wire being bared and fiattened into 9. contact medium at the upper center of the washer 26 said contact medium forms an electrical continuity connection with the contact pin 3! and the base contact 85 of the lamp bulb 20.

Operation The user of the appiiance first inserts the flash lamp into the socket arrangement and locking said lamp in the socket in the usual manner ct lamp insertions in a bayonet type socket.

-After the lamp has been flashed, the bulb thereof becomes considerably heated, and under ordinary circumstances said lamp would be difflcult of removal trom the socket owing to the heating thereoi.

'Ihe user in utilizing the present invention simply presses together the

ears

28 and 28 and against the spring 28a. The aforesaid movement partially rotates the collar 27 which movement causes the lamp 20 and with it the

pins

22 and 22 to move out of the L-shaped or key locking portion 24:: in which said pins were originally set and to move said pins in direct line with the

slots

24 and 24 In the position as stated there being no obstacle to detain the lamp bulb in said socket, the spring 21 which had been previously compressed'upon the insertion of the lamp in its normal setting position in said socket is now free to expand, said spring expansion causing the immediate expulsion or the lamp bulb atoresaid.

The utilization of the invention is best exemplifled when used in connection with a photographie camera. After picture exposure in which the flashing of the fiashlamp 20 has been utilized, the user of the camera by simply pinching or pressing the ears28 and 28' with the flingers of the right hand against the intervening spring 28a. and holding the camera with the left hand will cause the lamp 20 to be eiected from said socket arrangement. In this manner a new lamp can be substituted in lieu et the exhausted lamp without danger 01 burning the flngers which would be likely when attempting to unscrew the A lamp trom the lamp socket in the usual manner.

It will readily be seen that our invention can be considerably modified without departing from the spirit thereot. For example, the finger releasing means on the lamp socket may be conhas an applicabflity for purposes other than that pertaining to the photographie field. For ininstance, the ejector socket may be used in connectlon with illuminated electrlcal siens, for antomobile lighting, or for ligliting locations in which it is diflicult to remove lamps while said lamps are lighted. A

Now having descrlbed our invention. what we claim 13:

1. In a lamp socket, said socket including a v shell into which the base section 01 a lamp is inserted, said lamp having a locking pin ar-.

rangement thereon, lamp locking means in said socket, said locking means including a longitudinal slot arrangement, said slot arrangement comprising an L-shaped portion, 9. spring in said socket, said spring being compressed upon the insertion of said lamp into said socket and locked therein; said locking efiected by the turning of said lamp in said socket; finger pressed releasing means mounted on said socket, said releasin means engageable with said locking pin arrangement to cause said lamp in said socket and the locking pin arrangement thereon to be revoiubiy moved out of said L-shaped portion of said longitudinal slot arrangement whereby said lamp is unlocked from said socket and expelled therefrom through the medium of the expansion of said spring in the socket aforesaid.

2. In a lamp socket of the class described, said socket including a shell into which a lamp is inserted, a pair of slots each' of which has extended L-shaped portions in said shell into which a pair of proJecting pins mounted on the neck of said lamp are fitted upon the insertion of said lamp in said socket, said lamp and the projecting pins thereon being turned in said socket and held in said L-shaped portion of said slots, a spring within said shell that is compressed upon the insertion of said lamp; flnger controlling means mounted on said shell, said finger controlling means when moved and coacting with said projecting pins causing the partial rotation of said lamp from its locked or secured position whereby said lamp becomes unlocked and released, said release causing the release of the compression of said spring whereby said lamp is expelled from the socket aforesaid.

3. In a lamp socket including a shell into which a lamp having pin locking means on the neck thereof is inserted, slotted means in said shell, said slotted means including a L-shaped locking portion for locking and holding said lamp in said socket, a spring within said shell, said spring compressed by the insertion of said lamp in said shell; finger controlled means mounted on the outer circumierence of said socket, said flnger controlled means contiguous to said pin locking means of said lamp, and upon pressure oi said finger controlled means to cause said lamp to be rotatably moved and unlocked and thereby released from said L-shaped locking portions of said-slotted means whereby said lamp is eiected from said socket through the medium of the expansion of the spring aforesaid.

4. In combination, a lamp socket, said socket to receive a lamp therein having pin locking means on the neck thereoi, the insertion of said lamp to cause the compression et a spring within said socket; lamp ejecting means included in said socket, said spring included in said ejecting means, said ejecting means also including flnger controlled releasing means, said releasing means 4 locking means thereon that coact with cooperat- 7 ng locking means in said socket, finger operated re]easing means attached to the shell et s'aid socket, said releasing means conflguous to and coacting with said locking means on said lamp,

5 .the movement of 52114 .releasing menus causing the unlocking of said lamp in said socket,and

spring means, in said socket, said spring means being compressed upon the insertion of said lamp lamp-thereby causng the expulsion thereof from the socket aforesaid.

' MORRIS SCHWARTZ.

- WILLIAM CASIEDELL.