US1647697A - Electrical connecter - Google Patents

Description

Nov. 1, 1927. 1,647,697

W. F. HESSEL ELECTRICAL CONNECTER Filed NOV. 24. 1919 f? /Ay/E/V TOI? 2 WMM/M Patented Nov. l., 1927.

WILLIAM F. HESSEL, OF NEW YORK, N. Y.,

PATENT OFFICE.

.ASSIGNOR T W. F. HESSEL COMPANY, IN-

CORPORATED-OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

' ELECTRICAL coNNEcTER.

f This invention relates in general to electrical connecters, and more particularly t0 an electrical coniiecter of the type described in my United States Patent No. 1,296,801, dated March 11th, 1919, such conecters being designed to withstand hard usage and maintain a high degree of insulation.

The objects ofthe Iinvention are to provide a device of the character described embodying novel features of construction which will withstand rough `handling and hard usage without damage thereto; to provide an electrical connecter which will not easily get out of repair and which will ensure safety; to secure a device of this character which possesses and willl maintain a high degree of insulation; to providean electrical con- `erence indicate the same necter which is simple and inexpensive in its construction, which can be easily and quickly assembled or taken apart and which embodies a minimum number of parts and fastening members; and to obtain other objects and results as may be brought out by the following description.

Referring to the accompanying drawings which illustrate one embodiment of my invention, and in which like numerals ofrefparts throughout the several views:

Figure 1 is a top plan view of an electrical connecter embodying my invention,

Figure 2 is a plan view of the connecter box and insulating block, with the cover Plate and plug removed,

Figure 3 is a side elevation of the device;

Figure .4 is a vertical sectional view on the line 4-4 of Figure 2;

Figure 5 is a similar view on the line 5-5 of Figure 2, portions of the plug beingbroken away, and

igure 6 is a detached perspective view of the insulating block.

Specifically describing tlie present embodiment of the invention, the numeral 1 designates, the base of the device, which is shown in the form of a box constructed ot any suitable material to withstand hard usage, preferably heavy sheet metal. This box 1 is shown as formed of a single blank of sheet material with sides 2 and ends 3 integral-with the bottom 4 thereof, the ends ofthe sides 2 being bent inwardly at 2 and riveted at 5 to the inner faces of the ends 3. At one vend of the box 1, the'bottom, sides and end thereof are provided with knock-out portions 6 formed by pressing the walls of the box to weaken the same, any one ot' said knock-out portions being adapted to be struck out of the box by a hammer or the like, to provide an opening 8 t0 60 receive the line wires 9 and 10, according to 'he position of the box witn respect to the line wires. The bottom 4 of the box is'provided with a plural-ity of holes 4L to receive screws or bolts for Wall or the like if desired.

An insulating block llis fitted' within said box, one end of the block engaging one end wall of the box between the inturned ends 2 of the sides 2. formed of any suitable insulating material and comprises superposed sections 12 and 13, fastened together by countcrsunk screws 14 accessible from the top vof the block. The

upper side of the end of thu upper section 12 of the block 11 adjacent the end of the box is slightly raised above the topedges of the box as at 15 to form a transverse shoulder 16, the remaining portion of the block being of substantially. the same height as J the sides. and ends of the box.

A flanged cover plate17 closes the top of the box l, one end and the top of said cover plate being cut away at 18 to tit snugly around the raised portion 15 of the upper side of the 85 block, the. edges of said cutaway portion engaging the shoulder 16on the block 11 and the top of cover plate resting snugly over that portion of the top of the block 11 iush The cover lating block is held firmly in position with- I in the box. The inturned ends 2l of the sides of the box serve toposition the ,block in the box and the edges of the cutaway portion of the cover plate engaging the raised portion 15 of the upper section ofthe ill-3400 sulating block and shoulder 16 prevent all movement of the block'in any direction.

The meeting faces of the two sections 12 and'13 of the .insulatingblock are formed with eomplemental longitudinally extending 10.5

parallel grooves 20 and 21, which form openmgs to receive Va pair of spaced bus bars 22 secured to the lower section 13 ofthe insu` lating block by screws 23. One end of each of sald bus bars is provided with a binding fastening the box to a. 65

This insulating block is 70 screw 24, to each of which4 screws is connected one of the line wires 9, 10. The line wires 9 and 10 are lead to the bus bars through bars is formed with a transverse opening 25 registering with a corresponding open;

ing 26 in the uppersection 12 of the insulatlng block. These openings are adapted to receive the connecting conductor pins 27.

and 28 of an electrical connecting plug 29,

c whereby electrical connection is made beis provided through the end of the section htween said bus barsV and an extension o'r branch line 30. 4

The plugl29 is formed in three sections,

29", 29b and 29c of suitable insulating mate-4 rial, the connecting end section 29 carrying the connecting pins 27 and 28, and being secured to the intermediate section 29" by means of the screw 31. The section 29 is providedv with a cavity 33 to receive a conventional cartridge fuse 34 connected with one of the conductor pins, in the .present instance, the pin 27. This fuse 34 and the connecting pin 28 are engaged by spring sockets x35 and 36 'carried by the intermediate section 29b of the plug, said sockets being provided with binding screws 37 to which are secured the terminals of the branch or extension line 30. The section29 of the. plug is hollowed out to receive and house these binding'screws. 37 and wires, and is fastened to the -intermediate section 29h by meansof the screws 38. An' opening 39 29c to receive the branch wire andpermit its connection'with the binding screws-37.

It will be noted that all electrical connections within the box 1 are housed by the insulating block 11 so that there' is .no danger of short circuits or accidental shocks. lhere is no metallic connection betweenthe insu` lating block and the box 1 or its cover ,platey 17, such as screws or bolts, the' insulating ,block being held irmly lin position in the box by means of the cover plate 17. The block 1l is clamped betweenthe cover and bottom vof the box and lateral or longitudinal movement of the block is prevented by the edges of the cut-away portion 18 vof the cover plate engaging the raised portion 16 of the insulatingblock.` There is nov conducting member interposed between the plug 29 and the insulating block, so that the only possible velectrical connection is between the pins 27 and 28, and the bus bars. With the above construction, it will be seen that reby merely removing the cover plate 17, and

when inserting the block in the box, the inturned ends 2 of the sides 2and the edges of the cut-away portion 18 engaging the raised portion 15 of the block serve to quickly and accurately position the block. The

bottom of the box is of anextended area land flat so that it will lie steadily on a support and assume an upright position with the attached plug so 'as toeliminate the necessity of fastening the box to a support. This construction also allgws the box to be transported from place to place and a quick positoning thereof when the device is set down.

Obviously, many detail modifications and changescan be made inJthe construction of m -invention by those skilled in the art without departing from the spirit Vand scope of the invention, and I do not desire to be understood as limiting myself except as required by theufollowingA claims when construed in the light of the prior art.

Having thus described my invention what l claim as new herein and desire to secure by. Letters Patent is:

1. In a device of the character described, a sheet metal box having its side' and end walls integral with the bottom wall thereof, and having the end portions of the side walls bent inwardly and secured to the end walls of the box so as to form shoulders on said walls, a block of insulating material lplaced into said box and having only one of its side faces in contact with `the walls of' the said box, said face ot the block being arranged to tit snugly between the said shoulders formed on an end wall of the box and a cover for said box, said cover being arranged to engage the said block and to retainthe same 1n position.

. 2. In a device of the character described, a box, a block of insulating material, said block being in contact with only one of the side walls of said box, means on the said side wall for engaging'said block and preventing lateral movement thereof, and a cover for said box for receiving said block within said side wall ofthe box.

usf.

WILLIAM F. HE'ssEL.

Images