US1173621A - Terminal connector for curling-irons and the like. - Google Patents

Description

F. THURNTON, JR.

Patented Feb.29,191(3.

)(TTORNEY V o I V 00 .2 7 2 Z 7 6 2 i 7 z I w 2 .00 Z 70 2 J IE 7 1.5 E 4|i \l V fipm T I. 1 A/ w/ W 0 Z HOUSE ELECTRIC-AND MANU VANIA.

Asplicetion filed 35a" 1, 1913.

'0 all whom it may concern:

Be it known that l", FRANK .liz, citizen 4 United States, r-rsident of Fittshurgh, in the CORE i Allegheny and St, or lennsylvsnia, have invented a new and useful lnipr venient in Terminal Connectors for Curling-irons and the like, of which the following is a speciiication.

My invention relates to electrically heated apparatus, and it SBCill reference to terminal plug connectors for curling irons and the like.

The object of my invention is to provide curling" irons and other electrical apparatus With a simple, inexpensive and detachable terminal connector.

Heretofore, it has not been the usual practice to provide curling irons with detachable plug connectors and, consequently, more or less inconvenience has resultec. In former designs also, the movable tong was perinanently fastened upon the iron, which has been found to be an undesirabl feature in many cases.

According to my preseiit'invention, 1 proid detachable plug-connector Which is adapted for insertion within the handle of the iron and which, in addition, has a selfclamping feature.

Also, I provide a readily detachable spring-supported tong.

In the accompanying drawing, Figure 1 is a longitudinal tion of a curling iron constructed in accordance with my invention; FigiQ is a view, in elevation, with parts broken away, taken at right angles to Fig. 1; Fig. 3 is a sectional view, taken on line Ill-lll of Fig. 1; Fig. 4; is a sectional View, on line IVlV 0]": Fig. 2. and Fi 5 is a sectional view on line VV of Fig. 4.

Referring; to the -rawing, a curling iron 1 comprises a removable heater 2, an incasing member 3 therefor, a detachable ton 4, a tubular handle 5, and a plug connector 6 disposed Within the handle.

The removable heater 2 comprises a central rod 7, an insulating cement sheath 3 Triomwou, and a and a helical ly wound conductor 9 embedded in the sheath. One end of the heating element 9 is connected to the outer end of the rod 7 and its other end is connected to a shell 10 that is i nsulated from, and concentricslly disposed around said rod near its TERMIHXL CONNECTGE FOR CUELIEG-IRQNS specification of Letters Eatent.

inner end. The so tne heater Ween Y .0 1 r oe .ulied. with 3 is closed, and its constitute a ferrule 5 is screwed or otherwise f The ferrule is provided "01 of oppositely disposed n conn ct ion With the tong described.

The tong 4: comprises an semi-cylindrical cap 14 tht fit casing shell 3 and is pix e-tally mounted on the pins 13 of the ferrule 12, and an ou wardly prqectmg lever 15 for moving the cap away from the shell 3. The L} is biased to its closed position by spring 16 one end of which is attached, to e lever 15 and the other end of l s the ferrule 12 intermediate the pins 1 tong is detachably mounted on the ins 13 by means of a pair of longitudinally extend ing hooks 17. Though normally held in position by the spring 16, the tong 4: readily be detached, as will be seen from the foregoing description.

The handle 5 may be 0 any convenient form, and is made hollow Mr the rccep n of the lower end of the heater 2 and the plug-connector 6. As a of connect 8 ing the heater terminals '2' and 10 to the supply circuit through the connector 6, a plurality of stationary terminal strips 13, that are adapted for insertion in the connector, are partially embedded in clock 19 of suitable insulating matesial th t is disposed Within the handle 5 beyond .1e end of the heater 2. A plurality of suitably formed sprin fingers 20 and 1 gage the stationary terminals 18, as hereinbefore stated. One member 25 of each of the jaws 23 is imrnovably attached to the socket 22 and the other member 26 is movable laterally to a limited degree. Each of the members 25 is provided with a pair of oppositely-disposed ears 27 that are bent at right angles to its body portion and have centrally disposed openings 28. The movable members 26 are provided with oppositely-disposed lugs 29 that project through the openings 28 in the ears 27. A air of oppositely-disposed pins 30 are slida 1y disposed in openings in the socket 22 in position to engage the outer faces of the-jaw members 26, and a pair of springs 31 that are attached to a supporting band 32 upon the outer end of'the socket, act upon the pins to resiliently hold the movable jaw members 26 in engagement with the respective stationary terminals 18.

Assuming the connector 5 to be in the position shown in Fig. 1, the operation of the switch parts when the plug is removed, is as follows: The jaws 23 are disengaged from the stationary terminals 18. against the action of the spring-supported pins 30, which tend to close them. In inserting the connector, the jaws 23 are forced over the ter' minals 18 against the action of the springactuated pins, any necessary movement of the jaw members 26 being permitted by movement of the lugs 29 within the openings 28 in the cars 27. A constant pressure is thus imposed on the switch jaws to maintain the circuit connections. A

I do not wish to be restricted to the specific structures and details herein set forth, but desire that only such limitations shall e imposed as are indicated in the appended claims.

I claim as my invention:

1. A'switching device embodying cooperating stationary and movable contact mem means disposed at right angles to their plane of contact for clamping said contact mem 'bers lIl position.

3. A switching device embodying cooperating stationary and movable contact members, an insulating casing therefor, a plurality of resilient members attached to said casing, and a plurality of movable members associatedwith said resilient members for clamping said contact. members in position.

4. A switching device embodying coiiperating stationary and movable contact members, an insulating casing therefor, a plurality of resilient members attached to said casing and a plurality of movable pins actuated by said resilient members for clamping said contact members in position.

5. A switching device embodying a plurality of stationary contact members, a plurality of coiiperating movable contact members each provided with an additional loosely attached contact member, an. insulating casing for said contact members provided with a plurality of transverse openings, a plurality of flat springs attached to said casing, and a plurality of pins disposed at right angles to the plane of contact and adapted to move through said openings and actuated by said springs for clamping said loosely attached contact members againstsaid other contact members.

In testimony whereof, I have hereunto subscribed my name this 24th day of April 'FRANK THORNTON. JR. Witnesses:

C. A LBoRG, B. B. Hmns.

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