US2478886A

US2478886A - Applicator tool for electrical pass-throughs

Info

Publication number: US2478886A
Application number: US656591A
Authority: US
Inventors: Swart Jan De
Original assignee: Shellmar Products Corp
Current assignee: Shellmar Products Corp
Priority date: 1946-03-23
Filing date: 1946-03-23
Publication date: 1949-08-09
Anticipated expiration: 1966-08-09

Description

Aug. 9, 1949. J. DE SWART APPLICATOR TOOL FOR ELECTRICAL PASS THROUGHS' Filed March' 23 1946 I N V EN TbR. L/Zm d9 Smart W514 Patented Aug. 9, 1949 UNITED m-TE APPLICATGB TOOL FOR ELECTRICAL PASS-THRQUG-HS Jan de Swart, Los .Angeles, Calif assignor to' .Shellmar Products Corporation, Mount Vernon,

"Ohio, a corporation of Delaware Application March'23, 1946,'- Serial-No. 656,591 1 Claim- (Cl.2;18-19-) 'Myinvention is concerned with a hand tool or I connecting device 1 installed :applicator for instaliing an electrical connecting device or pass-through. I

In :the production and installation of certain types of electrical equipment it is frequently necessary to connect a' wire which is located on an accessible side of apartition with another wire which is located on the opposite or inaccessible .side of the partition. This connection may be :made by drilling, or otherwise providing, a hole in the partition, drawing theinaccessiblewire through the hole and securing it by soldering, or the like, to a connecting device or pass-through, installing the pass-through in the hole and then securing the wire on the accessible side of the partition to the pass-through.

It is an object of my invention to provide an applicator or hand tool, which is particularly designed for installing inanaperture ina partition, an electrical connecting device or pass-through of the type which comprises an outer securin sleeve and a telescoping insulator covered core member wherein the sleeve is provided atoneend' with an outwardly directed abutment portion and at the other end with inwardly directed: expandable portions which initially engage in a recess in the insulator-portion of the core member gwhereby when the connecting device is positioned vinthe aperture with the abutment portion in engagement with one side of the partition and the core member ,is pulled toward'said abutment the expandable portions of the sleeve will buckle outwardly and form a securing shoulder in engagement with the other side of the partition.

.It is an object of my invention to provide a hand tool having an inner member provided with resilient jaws, an outer telescoping member provided with resilient abutment members and an operating mechanism to move the jaws into engagement with the abutment member to cause the jaws to grip an element placed between the same and move it in the direction of the abutment members.

These and other objects will be apparent from a description of my device which is illustrated by I way of example in the accompanying drawings,

wherein: a

Fig. 1 is an elevation of my applicator tool with a portion of the operating handle broken away;

Fig. 2 is an end view of the device shown in Fig. 1;

Fig. 3 is a section on the line 3-3 of Fig. 1;

Fig. 4 is a section on the line 44 of Fig. 2;

Fig. 5 is an elevation showing the connecting device or pass-through which my applicator is particularly designed to install;

Fig. 6 is a view partly in section showing the connecting device in position in an aperture with my applicator in position to install the same; and

Fig. 7 is a View similar to Fig. 6 showing the surfaces 32 of the fingers 3e are brought into' 7 engaging relation with the outer surfaces 21 of.

' 2 V in the aperture but not yet released from the applicator tool.

-.' applicator tool, .as illustrated in the draw- ;irrgatis .particularly designed to install in an aperitnred wall or. partition an electrical connecting device orpass-through,of the type illustrated in Fig. 5, which comprises an outer securing sleeve .126 and an inner connecting element H. The innerxconnecting elementill includes a rod-like core member 12 around which a plastic insulator member I3 has been molded. The insulator member l3 ii-s'zprovided with a circumferential groove 1 4 "which receives the inturned slotted-end tli'of the securing sleeve to. The securing sleeve |9 is provided at the other end with a circum- :ferentia'l' outwardly extending flange or abutment shoulder l6. r c

My:applicator tool comprises an inner rod-like V tension applying member '20 and an outer tubelike section or body member 21.. The inner mem- :ber 20 is provided at one .end with resilient jaw- :l'il'ze portions or members 22 separated by slots 23 which extend radially inwardly to :a central re- ;cess 2 L The's10ts23 extend axially of the mem- =ber 20 to permit movement of the jaw members -;22-towards each other to engage in gripping realation .an end 25 of the rod-like :core I2 of the connector member 1-1 when it is positioned in the recess 23. serrations 26 may be provided at the outer ends of the jaw members 22 to increase their gripping action. The outer surfaces 21 of 7 the jaw members 22 are beveled in an inward axial direction. The inner member 20 extends into the outer tubular member 2| and is provided at its inner end with a pin 28 which extends outwardly through parallel guide slots 29 in the outer member 2|.

The outer member 2| is provided at one end with resilient abutment portions or fingers 39 separated by spaced slots 3|. The inner surfaces of the fingers 30 are shaped as shown in Fig. 4 to provide an inwardly tapered surface 32 for engagement with the tapered outer surfaces 21 of the jaw members 22 when the inner member 20 is moved into the outer tube 2| to bring these surfaces into engagement.

A handle member 33 is provided with downwardly directed legs 34 which are pivoted at 35 to the tube 2| adjacent its slotted end. The links 36 are connected at one end to the handle member 33by pivot 3'! and at the other end to the pin 28 extending from the inner member 20. By moving the gripping portion 38 of the handle 33 toward the tube 2| the pin 28. guided by slots 29, is moved inwardly of the tube 2|. and the inner the jaw members 22.

I have illustrated the use of my applicator tool in Figs. 6 and. 7. After the end of the wire 39 aperture 4| of the partition 40 with the flange 16 of securing sleeve Ill in engagement with the accessible surface of the partition 40 and end 25 of the core I2 extending outwardly of flange I6. My applicator tool is then positioned with the end 25 of core l2 extending into the recess 23 in the tension applying rod 20 and the ends of the abutment fingers 30 in engagement with the flange 16. The gripping portion 38 of the applicator handle 33 is then moved toward the tube 2| and the surfaces 32 engage the surfaces 21 to force the jaws 22 into gripping relation with the end 25 of the core 12. Further movement of the gripping portion 38 toward the tube 2| moves the inner element ll of the connecting 'device towards the flange l6 and causes the end portions 15 of the securing sleeve In to expand or buckle outwardly and form a shoulder 43 in engagement with the inaccessible surface of the partition 49. The split'ends 30 of the tubular member 2| will expand under pressure from the jaws 22 and permit the jaws 22 to move into the tube 2| after they engage in gripping rela-'- tion with the rod 25 a suflicient distance to bring about the clinching .or expanding action of the end l of the member ID as illustrated in Fig. 7. The tool may then be removed by moving the gripping portion 38 of the handle 33 away from the body member 2| to release the gripper jaws 22 from gripping relation with the end 25 of the core l2. The installation of the connecting device is then completed by securing to the core end 25 the end of the wire on the accessible side of the partition 40.

While I have described my applicator tool as embodying specific details of construction and as used in the installation of a specific device it will be understood that other details and other uses may be resorted to within the spirit of my invention.

I claim:

An applicator, for installing in an aperture in a panel, a two-part electrical pass-through device of the type having an outer flanged sleeve adapted to be positioned in the aperture with the flange in engagement with one side of the panel and an inner interengaging insulated connecting rod which is movable within the sleeve to cause one end of the sleeve to expand into engagement with the other side of the panel to secure the device in the panel, comprising a hollow tube having a slotted end adapted to be engaged with the flange on the securing sleeve of said passthrough, a tension applying rod telescoped in said tube, said tension applying rod being axially split at the end to provide gripper jaws normally extending exteriorly of said tube at the slotted end direction in said securing sleeve.

JAN DE SWART.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 2,170,323 Gorshkoff Aug. 22, 1939 2,216,767 DaVitow Oct. 8, 1940 2,384,690 Mullgardt Sept. 11, 1945 2,399,442 Luce Apr. 30, 1946 2,406,949 Huck Sept. 3, 1946 FOREIGN PATENTS 7 Number Country Date 514,462 Great Britain Nov. 8, 1939